CN104973598A - Active carbon production apparatus - Google Patents

Abstract

The invention provides an activated carbon production device, which includes an activation device, a pickling device, a drying device and a grinding device arranged in sequence. By adopting the above scheme, the present invention optimizes the production process of activated carbon by sequentially setting the activation device, the pickling device, the drying device and the grinding device, which is applicable to various raw materials and can also be used for the recycling of waste, and has great advantages. High market application value.

Description

An activated carbon production device

technical field

The invention relates to the field of activated carbon, in particular to an activated carbon production device.

Background technique

With the development of technology, the application of activated carbon is becoming more and more extensive. More and more industries and enterprises have applied activated carbon, and some enterprises have entered the activated carbon industry. For example, activated carbon is widely used in toxic gas filtration, urban sewage treatment, drinking water and Industrial wastewater treatment. Activated carbon, also known as activated carbon black, is black powder or granular amorphous carbon. In addition to carbon, the main components of activated carbon include oxygen, hydrogen and other elements. During its activation process, a huge surface area and complex pore structure are gradually formed, and the adsorption process of activated carbon is carried out in these pores and on the surface. In activated carbon The size of the pores has a selective adsorption effect on the adsorbate, which is because macromolecules cannot enter the pores of activated carbon smaller than its pores. Simply put, activated carbon is a hydrophobic adsorbent made from carbon-containing substances as raw materials and subjected to high-temperature carbonization and activation. Activated carbon contains a large number of micropores and has a huge specific surface area, which can effectively remove color and odor, and can remove most organic pollutants and some inorganic substances in the secondary effluent, including some toxic heavy metals.

For example, the Chinese patent application number 201210451920.6 relates to a method for producing shaped bamboo activated carbon from bamboo activated carbon powder. Put bamboo activated carbon powder into a blender and add deionized water, then add clay and water-based polyurethane resin aqueous solution with a concentration of 20-40wt%, and stir until uniform; transfer the evenly mixed mixture to a molding device to make bamboo Activated carbon shaped body: drying at a temperature of 65-80°C, and then gradually raising the temperature to 150-160°C for drying, to prepare shaped bamboo activated carbon. The content of the bamboo activated carbon powder in the shaped bamboo activated carbon is 85-95wt%, the content of the clay is 2-5wt%, and the content of the water-based polyurethane resin is 3-10wt%. The method for producing shaped bamboo activated carbon by using bamboo activated carbon powder of the present invention is simple, does not discharge "three wastes" and has no environmental pollution. The obtained formed bamboo activated carbon has good performance, and is especially suitable for applications in water treatment, air purification, desiccant and the like.

As another example, the Chinese patent application number 201310221064.X discloses a method for preparing activated carbon by weighing a carbon precursor polymer in soluble phenolic resin, furfuryl alcohol resin, polyacrylonitrile, and soluble starch and polyethylene glycol. A pore-forming agent in alcohol, polyvinyl alcohol, polyvinyl butyral, mix, add methanol, ethanol, a solvent in deionized water to dissolve; weigh the activated carbon raw material and add it to the above solution for impregnation, then dry, Carbonize at 500-1100° C. for 0.5-24 hours in a microwave high-temperature sintering furnace under a nitrogen atmosphere. According to the method for preparing activated carbon provided by the invention, the activated carbon product produced by it has the same wear resistance and micropores as the raw activated carbon, and has increased mesopores than the raw activated carbon, has a double pore size distribution, has a large specific surface area, and is wear-resistant. High strength, can meet the application requirements of specific conditions.

However, how to optimize the production of activated carbon is a technical problem that needs to be solved.

Contents of the invention

The technical problem to be solved by the invention is to provide a new activated carbon production device.

The technical scheme of the present invention is as follows: an activated carbon production device, which includes an activation device, a pickling device, a drying device and a grinding device arranged in sequence.

For example, the activation device is used to activate the carbonized material to increase its adsorption capacity to obtain the material to be pickled; the pickling device is used to pickle and dry the material to be pickled to obtain the material to be ground; The grinding device is used to grind the material to be ground to obtain the activated carbon.

Preferably, the activated carbon production device further includes a heating carbonization device connected to the activation device for carbonizing raw materials to obtain carbonized materials for activation.

Preferably, the heating and carbonization device is provided with a cracker, a lower furnace body and a discharge box in sequence; the cracker is used for cracking and carbonizing raw materials to obtain preliminary carbonized materials; the lower furnace body is used for completely Carbonize to obtain carbonized material; the discharge box is used to collect and output the carbonized material.

Preferably, the cracker is provided with a feed inlet, a drying zone and a carbonization zone in sequence. For example, the temperature of the feed inlet, the drying zone and the carbonization zone increases gradually.

Preferably, the cracker is provided with a double-layer sleeve; in the inner layer of the double-layer sleeve, one end is the feed inlet, and the other end is provided with a cracking discharge opening with an opening downward for passing through the free The falling body transports the preliminary carbonized material to the lower furnace body; the drying area and the carbonization area are arranged in the inner layer of the double-layer casing.

Preferably, the interlayer of the double-layer casing is a hot air channel, the first air channel inlet is connected to the carbonization zone, and the air channel outlet is close to the feed inlet.

Preferably, the second air passage inlet of the hot air passage communicates with the lower furnace body.

Preferably, a second induced draft fan is provided at the entrance of the second air duct.

Preferably, the discharge box is provided with a sealed chamber for sealing after collecting the carbonized material.

Preferably, the discharge box is further provided with a cooler for cooling the outputted carbonized material after sealing to below 40°C.

By adopting the above scheme, the present invention optimizes the production process of activated carbon by sequentially setting the activation device, pickling device, drying device and grinding device, which is applicable to various raw materials and can also be used for waste recycling, with great advantages. High market application value.

Description of drawings

Fig. 1 is the schematic diagram of an embodiment of the present invention;

Fig. 2 is a schematic diagram of another embodiment of the present invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not used to limit the present invention. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

As shown in Figure 1, one embodiment of the present invention is an activated carbon production device, which includes an activation device, an acid washing device, a drying device and a grinding device arranged in sequence. For example, the activation device is used to activate the carbonized material to increase its adsorption capacity to obtain the material to be pickled; the pickling device is used to pickle and dry the material to be pickled to obtain the material to be ground; The grinding device is used to grind the material to be ground to obtain the activated carbon.

Preferably, the activated carbon production device further includes a heating carbonization device connected to the activation device for carbonizing raw materials to obtain carbonized materials for activation. For example, carbonizing raw materials. For example, the raw materials include biological substances or wastes, mainly plant substances or wastes, for example, plant wastes include forestry wastes and/or agricultural wastes; wherein, forestry wastes mainly refer to biomass raw material resources Forestry residues, including forest harvesting residues, wood processing residues, and forestry pruning residues; agricultural waste mainly includes waste discharged from agricultural production, agricultural product processing, livestock and poultry breeding, and rural residents’ life, also known as agricultural waste. Garbage, its components mainly include plant fibrous waste and livestock and poultry manure. In the present invention and its various embodiments, agricultural waste mainly refers to plant fibrous waste. All plant matter raw materials must be carbonized to obtain carbonized materials for activation.

Preferably, the carbonization includes physical carbonization, for example, the heating carbonization device adopts heating carbonization or combustion carbonization. Preferably, the heating carbonization device includes an indirect heating carbonization device. Preferably, the heating carbonization device includes a continuous indirect heating carbonization device. For example, all raw materials must be carbonized to obtain carbonized materials for activation. Among them, the continuous indirect heating carbonization device adopts continuous indirect heating carbonization method for carbonization, which mainly uses wood or straw and other plant materials. The principle of combustible pyrolysis of hydrogen and oxygen elements is realized. For example, the continuous indirect heating carbonization device is used to convert the hydrogen and oxygen in the raw material into methane and carbon monoxide gas at 400 to 600 ° C, and burn them to generate heat, so that other raw materials continue to undergo the same thermal decomposition reaction to uniform carbonization. As another example, it is also used to control the reaction rate and temperature through oxygen supply, feed rate and feed quantity. For example, increase the oxygen supply to increase the carbonization temperature, increase the oxygen supply and feed rate to increase the reaction speed, etc., and so on.

Preferably, the heating carbonization device is equipped with a screw feeding unit, for example, the screw feeding unit uses gravity to send raw materials into the heating carbonization device by means of screw feeding; preferably, the heating carbonization device adopts a self-heating method, The carbonization is carried out by utilizing the heat generated by the combustion of the raw material itself. Preferably, the heating carbonization device is used to implement stage-by-stage heating during carbonization, the temperature of each stage in the heating carbonization device is set from low to high, the temperature at the feeding place is relatively low, and the temperature at the discharging place is relatively high . As another example, the heating and carbonization device is also used to recover and utilize heat energy during carbonization, and return the hot air to the above-mentioned sections in sequence, first returning to the position with a higher temperature, and finally emitting it from the feed place with a lower temperature; preferably , the heating and carbonization device also performs environmental protection treatment on the hot air used for emission. For example, the hot air that is released passes through tap water in a water tank, for example, an S-shaped pipe and a water tank are arranged at the discharge of the heating and carbonization device, so that the hot air can pass through an S-shaped pipe into the water and escape. Preferably, the S-shaped pipe is provided with an installation hole, and a one-way film is arranged on it, so that when a negative pressure is formed in the S-shaped pipe, external air enters the S-shaped pipe through the one-way film, so as to avoid of tap water flowing backwards.

Preferably, the heating and carbonization device is a carbonization and cracking device, and a cracker, a lower furnace body and a discharge box are arranged in sequence; the cracker is used for cracking and carbonizing raw materials to obtain preliminary carbonized materials; the lower furnace body is used for The preliminary carbonized material is completely carbonized to obtain carbonized material; the discharge box is used to collect and output the carbonized material. For example, the carbonization and cracking device includes three parts: a cracker, a lower furnace body, and an ash outlet box, and the ash outlet box is essentially a discharge box. The main function of the carbonization and cracking device is to preheat raw materials, perform pyrolysis, and precipitate moisture and volatile matter. Preferably, the carbonization and cracking device is set as a cracker to provide hot flue gas and a carbonization furnace for deep processing of raw materials. For example, the plant material enters the cracker from the feeding port, is indirectly heated by the high-temperature flue gas of the carbonization furnace, and undergoes dry pyrolysis to precipitate moisture and volatile matter; The complete combustion reaction further removes the volatile matter in the raw material to obtain a higher carbon content; finally, it is discharged from the carbonization furnace through the carbon discharge device. In addition, the pyrolysis gas produced by the dry pyrolysis of raw materials in the cracker and the combustible gas produced by incomplete combustion after entering the carbonization furnace are mixed with air in the carbonization furnace and ignited to form high-temperature flue gas. The flue gas enters the interlayer of the cracker under the action of a high-temperature induced draft fan to provide a heat source for the dry pyrolysis of biomass raw materials. At the same time, in order to make full use of this part of the heat, a water jacket can be installed outside the cracker to provide hot water for the subsequent activation process.

For example, when the system starts up, in order to preheat the cracker to the ideal temperature, it is necessary to adjust the carbonization furnace to the state of the combustion furnace. That is to add some raw materials into the carbonization furnace, and pass in the lower part of the air to make it undergo a complete combustion reaction, and the hot flue gas generated is used to preheat the cracker. When the cracker reaches the ideal temperature, stop supplying the lower part of the air, and add raw materials into the cracker, then slowly feed the middle and upper part of the air, and adjust its flow rate according to the specific working conditions. The bottom of the carbonization furnace can be equipped with rotating grate or screw auger and other devices. At the same time, a star discharge valve is set at the carbon outlet to realize continuous carbon discharge and prevent air leakage. In this way, it has the following advantages: high energy utilization rate, energy saving, full use of the energy of biomass raw materials to meet the energy demand of the system itself; low pollution, biomass tar is burned at high temperature in the system, greatly reducing environmental pollution; High degree of mechanization and automation. The data acquisition and control system can be executed remotely, and the system status can be monitored in real time.

Wherein, the cracker is the feed and carbonization part of the carbonization cracking device. Preferably, the cracker is provided with a feed inlet, a drying zone and a carbonization zone in sequence. For example, the temperature of the feed inlet, the drying zone and the carbonization zone increases gradually. Preferably, the cracker is provided with a double-layer sleeve; in the inner layer of the double-layer sleeve, one end is the feed inlet, and the other end is provided with a cracking discharge opening with an opening downward for passing through the free The falling body transports the preliminary carbonized material to the lower furnace body; the drying area and the carbonization area are arranged in the inner layer of the double-layer casing. Preferably, the interlayer of the double-layer casing is a hot air channel, the first air channel inlet is connected to the carbonization zone, and the air channel outlet is close to the feed inlet. Preferably, the second air passage inlet of the hot air passage communicates with the lower furnace body. Preferably, a second induced draft fan is provided at the entrance of the second air duct. For example, the cracker of the carbonization cracking device includes: a feed section, a drying section and a carbonization section. Preferably, the main shape of the cracker is a cylindrical double-layer casing. For example, the outer wall of the inner casing is welded with Spiral, the hot air passes evenly along the pipe wall. For example, the hot air is drawn to the outside through the induced draft fan on the ground, and the hot air passing through the casing heats the inner casing to 500°C. The outer casing steel plate is as thick as 18MM, and is wrapped with an insulation layer to prevent heat loss. Preferably, the inner sleeve is equipped with a screw feeder, and the gap between the screw blade and the inner wall of the inner sleeve is less than 5 mm, so as to prevent the plant material from being stuck on the screw. Preferably, the screw feeder is from the feed port of the cracker to the discharge port of the cracker, and one end of the discharge port of the cracker is fixed with a suspension. After the plant material is crushed into particles below 10 cm, it is sent from the feed port to the feed port by a belt conveyor. The feed port is equipped with a forced feeder to prevent the plant material raw material from hanging over the feed port and causing blockage. Because the temperature of the inner casing wall starts from the discharge port to the feed port, it is a trapezoidal decrease from 500°C to 200°C. The closer to the discharge port, the higher the temperature. In this way, the material at the feed port is only dried, and as the material moves forward, The temperature is getting higher and higher, reaching the carbonization temperature of 400-450°C in the middle of the pyrolysis, and the material starts to pyrolyze by itself and generates heat, which is then introduced by the induced draft fan from the elbow at the upper end of the discharge port to the air between the inner sleeve and the outer tube. Road, continue to supply heat to the cracker. After the plant material reaches the discharge port of the cracker, it has completed the carbonization process and falls into the lower furnace body, forming a stockpiling layer in the lower furnace body. At the same time, the heat energy emitted by the stockpiling layer is also introduced into the interlayer through the elbow to supply heat to the cracker. .

The carbonized material freely falls into the lower furnace body through the discharge port of the cracker. The lower furnace body is the storage bin for the carbonized material and also the main source of heat supply for the cracker. The carbonized material accumulates in the lower furnace body, and the heat generated by the carbonization continues to be introduced into the cracker by the suction fan for heating. At the same time, in order to prevent the material from fully contacting with oxygen, the loss rate is too high. Preferably, the lower furnace body is divided into two sections from bottom to top to supply air to the entire furnace body, so as to keep the material burning while ensuring that the material will not be burned. The temperature in the lower furnace body can be controlled by adjusting the air supply. The air supply at the bottom of the lower furnace body is to ensure that the materials can continue to burn after accumulation, so that some materials that have not been completely carbonized can continue to be carbonized to avoid the production of raw materials. Preferably, the air distribution in the upper section is in the middle of the lower furnace body, which is a ring-type air distribution, and there are 6 air outlet pipes, all of which are embedded in refractory cement to prevent them from being burned out at high temperature for a long time. For example, the air intake volume of each section of air distribution is adjusted by the air volume blown by the blower. Preferably, an explosion-proof opening is provided at the uppermost part of the lower furnace body to prevent explosion caused by excessive pressure in the furnace. Preferably, the upper part of the lower furnace body is also equipped with a pressure gauge, which is used for temperature monitoring by three sections of thermocouples from top to bottom. Preferably, the conical bottom of the lower furnace body is equipped with a material discharge agitator, which is used to ensure that the material does not block the discharge of the material. Preferably, there is a fire opening on the upper side of the cone of the lower furnace body, which is used for the operation of the oven and the furnace when starting the furnace. Preferably, the discharge port on the side of the cone of the lower furnace body is a water-cooled discharge port, equipped with a water-cooled jacket tube, which is used to prevent the jacket tube from reddening due to the accumulation of carbon material at the discharge port of the lower furnace body for too long. cause production safety accidents. Preferably, the discharge port of the lower furnace body is equipped with an electric discharger.

Preferably, the discharge box is provided with a sealed chamber for sealing after collecting the carbonized material. Preferably, the discharge box is further provided with a cooler for cooling the outputted carbonized material after sealing to below 40°C. For example, the ash outlet box is actually a charcoal outlet box, which is connected to the discharge port of the lower furnace body and sealed to prevent the air from entering and causing the material to burn. When the discharge port is opened, the feed port of the ash discharge box is opened, and there is a material level gauge in the ash discharge case. When the material level is full, the feed port of the ash discharge box is closed. The screw feeder in the ash box is activated and the material is discharged outward. The ash box is a sealed device, which prevents the carbonized material from being burned in contact with the air, and plays the role of extinguishing the fire and reducing the temperature of the charcoal. The carbonized material that comes out enters the slag cooling machine through the conveyor belt, and is cooled to 20-40°C in the last step, and then passes through the specific gravity destoner to remove impurities, sand, slag, etc.

As shown in Figure 2, another embodiment of the present invention is an activated carbon production device, which includes a heating carbonization device, an activation device, a pickling device, a drying device, a grinding device, a sieving device and a mixing device arranged in sequence . Another example is an activated carbon production device, which includes a primary crushing device, a heating carbonization device, a secondary crushing device, a primary screening and classifying device, an activation device, a secondary screening and classifying device, a pickling device and a grinding device arranged in sequence. Another example is an activated carbon production device, which includes a primary crushing device, a heating carbonization device, a secondary crushing device, a primary screening and grading device, an activation device, a secondary screening and grading device, a pickling device, a grinding device, and a sieving device. devices and mixing devices. For example, the activation device is a rotary activation device.

For example, the primary crushing device is used for primary crushing of plant matter raw materials to obtain raw materials to be carbonized; for example, the primary crushing device is a primary crushing device for forestry waste, and the primary crushing device for forestry waste The material is crushed for the first time to obtain the raw material to be carbonized; the heating carbonization device is used to carbonize the raw material to be carbonized to obtain carbonized material; the secondary crushing device is used to crush the carbonized material; the primary screening and grading device is used to Carry out initial screening and classification of the carbonized material to obtain the graded carbonized material to be activated; the rotary activation device is used to activate the classified carbonized material to be activated to improve its adsorption capacity and obtain the material to be pickled; the secondary screening and grading device It is used to carry out secondary screening and grading of the materials to be pickled to obtain graded materials to be pickled; the pickling device is used to pickle and dry the graded materials to be pickled to obtain materials to be ground; the grinding device It is used for grinding the material to be ground to obtain the activated carbon.

Another example is an activated carbon production device, which includes a primary crushing device, a compression molding device, a cutting device, a heating carbonization device, a secondary crushing device, a primary screening and grading device, an activation device, a secondary screening and grading device, and a pickling device. device and grinding device. Another example is an activated carbon production device, which includes a primary crushing device, a compression molding device, a cutting device, a heating carbonization device, a secondary crushing device, a primary screening and grading device, an activation device, a secondary screening and grading device, and a pickling device. device, dehydration device, drying device and grinding device. Another example is an activated carbon production device, which includes a primary crushing device, a compression molding device, a cutting device, a heating carbonization device, a secondary crushing device, a primary screening and grading device, an activation device, a secondary screening and grading device, and a pickling device. device, dehydration device, drying device, grinding device, sieving device and mixing device.

For example, the primary crushing device is a primary crushing device for agricultural waste, for example, the primary crushing device for agricultural waste is used for primary crushing of agricultural waste to obtain primary crushed raw materials; the press molding device is used for primary crushing raw materials Press molding to obtain molding raw materials; the cutting device is used to cut the molding raw materials to obtain raw materials to be carbonized; the heating carbonization device is used to carbonize raw materials to be carbonized to obtain carbonized materials; the secondary crushing device is used to The carbonized material is crushed; the primary screening and grading device is used for primary screening and grading of the crushed carbonized material to obtain classified carbonized material to be activated; the activation device is used to activate the activated carbonized material to be classified to improve its adsorption capacity , to obtain the material to be pickled; the secondary screening and grading device is used to carry out secondary screening and grading to the material to be pickled to obtain the graded material to be pickled; the pickling device is used to acidify the graded material to be pickled washing, dehydrating and drying to obtain the material to be ground; the grinding device is used to grind the material to be ground to obtain the activated carbon.

For example, the primary crushing device is used to crush forestry waste or agricultural waste into small pieces, for example, to a volume of 1 to 50 cubic centimeters, and/or, the maximum length or maximum width is in the range of 0.8 to 10 cm ; for example, primary shredding of forestry or agricultural waste by mechanical pressing or cutting. For example, the primary crushing device is provided with a mechanical pressing unit and/or a mechanical cutting unit, for example, the two are arranged in parallel or sequentially. For example, before the carbonization, the raw material is crushed by the primary crushing device, for example, until the maximum length or maximum width is smaller than a preset size threshold, and then pressed into shape, so that the powder can be prevented from entering the subsequent carbonization step, directly Burning to ash wastes energy without harvesting, after which the pressed molding is cut, for example, to a volume of 1 to 50 cubic centimeters, and/or to a maximum length or maximum width in the interval 0.8 to 10 cm, such that, Facilitate the subsequent carbonization step. Preferably, the primary crushing device is also provided with a screening and filtering unit, which is used for primary screening to obtain crushed raw materials whose maximum length or maximum width is less than a preset size threshold, and transport these crushed raw materials into the compression molding device; The crushed raw materials whose maximum length or maximum width is greater than a preset size threshold continue to be primary crushed by the primary crushing device. For example, the preset size threshold is 0.8 to 10 cm. In another example, the preset size threshold is 1 to 5 centimeters.

For example, a screening device is also provided between the primary crushing device and the compression molding device, which is used to sieve the agricultural waste to obtain large particles and small particles after primary crushing. Afterwards, it is transported to a compression molding device, by which large particles and small particles are jointly compressed and formed; or compressed and formed separately; preferably, the compression molding device includes a small particle pressing unit and a large particle pressing unit, and the large particle pressing unit For compressing large particles, the small particle pressing unit will be used for compacting small particles; wherein, the small particle pressing unit compresses small particles with a higher pressure than the large particle pressing unit compresses large particles The pressure at the time makes the compaction of small particles more stable.

For example, the pressing and forming device is used to press the primary crushed agricultural waste into a forming raw material, such as a formed sheet, plate or block material, for example, the thickness of which is 1 to 10 cm. As another example, the cutting device is used to mechanically cut the molding raw material, that is, the pressed material, so that its volume is cut into 1 to 50 cubic centimeters, and/or its volume is cut into a maximum length or The maximum width is in the interval 0.8 to 10 cm. In this way, before the original agricultural waste is carbonized, the difference in specifications is small, that is, the raw material to be carbonized has a certain volume specification, so that some powders and some large pieces are not co-carbonized, so that the production rate can be improved.

As another example, the secondary crushing device is used to crush the carbonized material, for example, crushing it to a volume of less than 50 cubic centimeters, and/or, the maximum length or maximum width is less than 10 cm; preferably, crushing it to a volume of less than 30 cubic centimeters, and/or, less than 8 centimeters in maximum length or maximum width. Then, in the primary screening and grading device, the crushed carbonized material is initially screened and classified to obtain the classified carbonized material to be activated; that is, the primary screening and grading device is used to perform primary screening and classification on the crushed carbonized material to obtain a classified carbonized material to be activated; for example, carry out initial screening and classification according to particle size, and classify according to particle size; for example, each predetermined particle size range is one level; for example, every interval of 1 cm or 2 cm is one particle size range level; for example, the primary screening and grading device is provided with a primary filter screen for filtering and grading according to particle size. In this way, it is conducive to the uniform realization of the subsequent activation step, thereby improving the activation effect.

As another example, a secondary screening and grading device is set between the activation device and the pickling device, for example, after the rotary activation, the secondary screening and grading device is used for secondary screening and grading, for example, the secondary screening and grading device is used for In the secondary screening and classification, the activated materials to be pickled are screened and classified to obtain classified materials to be pickled; for example, secondary screening and classification is carried out according to particle size, and classification is carried out according to particle size; for example, each predetermined particle The diameter size range is one level; for example, the particle size range is one level every 1 cm or 2 cm; for example, the secondary screening and grading device is provided with a second-stage filter screen for filtering and grading according to particle size . In this way, it is conducive to the uniform realization of the subsequent pickling step, thereby improving the pickling effect.

Activated carbon activation is one of the most important steps in the production of activated carbon. Preferably, the activation includes rotational activation. Preferably, the rotary activation is internal heat rotary activation, for example, the activation device includes a rotary drying unit. Preferably, the activation device includes an internal heating rotary drying unit. Preferably, the rotary drying unit is an internal heating rotary kiln. For example, the activation device adopts chain conveying to feed the material to the rotary drying unit, and then blows the material to prevent it from accumulating at the entrance; at this time, the rotary activation is carried out in an internal heating type rotary activation furnace, for example, The carbonized material to be activated, that is, the material, slowly moves forward with the rotation of the rotary activation furnace, and is constantly in contact with the steam ejected from the steam pipe arranged on the inner wall of the furnace. Preferably, the activation device or the rotary activation furnace is equipped with a stage-by-stage heating system or a gradient heating system, which is used to implement stage-by-stage heating during activation, and the temperature of each stage is set from high to low, and the temperature at the feed place is relatively high. High, the temperature at the outlet is low. Preferably, the activation device or the rotary activation furnace is provided with a waste heat heating steam pipe or a steam supply system to improve energy utilization efficiency and reduce energy consumption. Preferably, the burner head of the internally heated rotary kiln is provided with a burner head guard. Preferably, the burner protective cover includes an annular steel cover, and refractory cement is arranged inside it. Preferably, the rotary drying unit is further provided with a steam supply system, and the furnace body of the internal heating rotary furnace is provided with several steam holes, which are connected to the steam supply system. Preferably, several steam supply systems are provided. Preferably, several steam holes are evenly arranged on the furnace body of the internal heating type rotary furnace. Wherein, the aperture of the steam hole is determined according to the furnace body volume of the internal heating rotary furnace and the amount of reaction materials, and can also be adjusted in practical applications. Preferably, the activation device or the rotary activation furnace is also provided with a purifier for environmental protection treatment of the released hot air. For example, the purifier includes an S-shaped pipe and a water tank, and the hot air that is emitted passes through tap water in a water tank, for example, the hot air is passed into the water through an S-shaped pipe and then escape. Preferably, the S-shaped pipe is provided with an installation hole, and a one-way film is arranged on it, so that when a negative pressure is formed in the S-shaped pipe, external air enters the S-shaped pipe through the one-way film, so as to avoid of tap water flowing backwards.

For example, a rotary kiln is used for activation, wherein the rotary kiln described in this embodiment is technically transformed on the basis of a rotary drying kiln, and the commonly used external heating type is changed to an internal heating type without an external heating source. For example, its total length is 16 meters, with 3 external steam supply systems, corresponding to the rotary furnace body starting from 2 meters from the furnace head, and each steam supply system is equipped with flow meters, pressure gauges, and valve adjustments. There are 145 steam holes in the whole furnace, which are distributed in a mesh shape to ensure full contact between the steam and the carbonized material in the furnace. The feed port is above the furnace head, and is fed by a chain conveyor. For example, the burner has a self-made burner guard. For example, the guard is an annular steel cover with refractory cement inside. For example, the cover is equipped with an observation window. For example, the feed inlet enters the upper part of the cover body and extends into the round hole in the center of the burner, and the blower outlet also enters from the round hole. Preferably, the blower pipe that enters is blown down slightly to material layer. The material falls into the furnace head from above, is blown by the blower, and moves forward about 50 cm to prevent the material from accumulating at the furnace mouth. The material moves forward slowly with the rotation of the rotary kiln, and is constantly in contact with the steam ejected from the steam pipe arranged on the inner wall of the furnace. Preferably, the steam pipe extends into the furnace by 5 cm to prevent the pipe from being too long. Deformation, preferably, each pipe is drilled with a 1 mm hole to increase the steam pressure and make the steam contact with the material more fully. Preferably, the furnace is built with two layers of insulating bricks and refractory bricks to prevent heat loss and deformation of the furnace body under high temperature. The temperature of the outer wall of the furnace is only 150 degrees, while the temperature in the furnace is roughly 1050 degrees from the furnace head to the furnace tail. , 850, 650, 400°C. The heat is discharged from the tail of the furnace with the guidance of the blower and the induced draft fan at the end of the furnace, and is discharged to the atmosphere through the waste heat boiler and the water tank before the induced draft fan. Preferably, the inner wall of the furnace is built with refractory bricks to form three rows of flight boards, so that the materials can be raised with the flight boards, and the contact with the steam is more sufficient, so as to achieve the effect of uniform activation. The material is rotated through the rotary kiln to the end of the furnace for discharge. During the movement of the material to the end of the furnace, steam is always involved in the activation and pore creation to ensure complete activation. Preferably, the discharge opening is a square opening of 600X600MM, and a spiral coil is installed outside the discharge opening, which is coiled on the outer furnace wall. The straight length of the coil is 3-4 meters, and the length can be adjusted according to the cooling requirements of the material. The purpose is to ensure When the material is discharged, the material is less in contact with the air, which plays a role in extinguishing the fire, so that the material will not continue to burn, improve the labor efficiency of the workers, and reduce the operating temperature of the workers. The heat energy generated by the activation and pyrolysis of materials in the furnace is drawn out by the induced draft fan at the end of the furnace. When passing through the steam boiler, it supplies heat to the boiler, and a water storage tank behind the practice boiler is added to reduce the heat energy consumed by the boiler. For example, the steam pipes are arranged outside the outer furnace wall, arranged in a centipede-shaped line, so that the surroundings of the furnace are covered by steam holes to achieve uniform and comprehensive steam input. For example, supporting rollers are arranged at both ends of the furnace, and supporting rollers are arranged in the middle, and the gap with the outer furnace wall is greater than 15 cm, which is conducive to the passage of steam pipes. Preferably, the front, middle and rear of the furnace are divided into three sections with wireless thermocouples probing into the furnace to monitor the temperature in the furnace in real time. Preferably, the steam pressure tubes are also arranged in three sections on the furnace wall to measure the steam pressure in the front, middle and back sections, so that the operator can judge the steam flow, so as to adjust the activation effect in real time.

And/or, the activation includes boiling activation. Preferably, the activation device includes a fluidized drying unit. For example, the boiling drying unit is a boiling activation furnace, which is used to perform the boiling activation in the boiling activation furnace. For example, the boiling activation furnace is obliquely provided with a number of pipes that pass through its wall and communicate with the outside, for Input air and/or steam, for example, the mixed gas of air and steam ejected obliquely from the pipeline of the boiling activation furnace forms a cyclone flow in the furnace, which can drive the carbonized material to be activated, that is, the material, to rotate towards the tail of the furnace; preferably Yes, the discharge position of the boiling drying unit is provided with two-stage cyclone separators. Preferably, the outlet of the first-stage cyclone separator is connected to the water flow diversion tank, and the outlet of the second-stage cyclone separator is connected to the collection bag. For example, a two-stage cyclone separator is set at the outlet of the furnace tail, which is used to first discharge the material by primary cyclone separation, and export it through water flow, for example, transport it into the storage tank with water flow; and then continue to use the secondary cyclone separation method to separate the Place remaining material in a collection bag.

For example, a fluidized bed furnace is used for activation. The fluidized bed furnace of this embodiment is a furnace type specially designed for the production and regeneration of powdered activated carbon based on fluidized bed technology. For example, its total length is 9 meters, and the inner wall is filled with refractory cement and refractory materials. The inner wall has a unidirectional downward sloping hole, and the steam pipe and the air pipe are obliquely inserted into the furnace wall from the hole to form a downward air hole along the cylindrical furnace wall, so that the mixed gas of air and steam ejected from the pipe is formed in the furnace. The whirlwind flow can drive the material to rotate to the end of the furnace. For example, the feed port is equipped with a silo, a feeding screw and a blower to blow the powdery carbon raw material with a water content of less than 15% into the furnace, and guide it to the end of the furnace combined with the induced draft fan at the end of the furnace. For example, the tail of the furnace is equipped with a waste heat boiler, and the hot gas guided to the tail of the furnace by the induced draft fan passes through the boiler to provide a heat source to generate steam, and returns to the furnace through pressure as an activator. Preferably, behind the boiler is a 5-meter-long sleeve pipe, and the activated material flows through the sleeve pipe to the first cyclone separator at the end of the furnace. Preferably, a water-cooled desuperheating system is arranged outside the sleeve pipe to make it come out of the cyclone separator. The temperature of the material does not exceed 100 degrees, which is conducive to collection. Preferably, the lighter material flows out of the second cyclone separator, and the second-stage cyclone collection is to prevent material loss, for example, the material discharged from the second-stage cyclone is collected by bag dust removal, for example, the material collected by the first cyclone separator It falls directly into the water flow diversion tank, and is transported into the storage tank by water flow, and enters the next process.

Usually, the pickling device is used to remove iron ions, ash, other heavy metals, etc. through pickling; preferably, the pickling device is sealed, so that the pickling can be performed in a sealed environment. For example, the pickling is performed in a sealed environment. Preferably, the pickling device is provided with a stirrer for the pickling to be carried out under stirring, so that the pickling efficiency is higher and better. Preferably, the pickling device is provided with a preconditioner, which is used to pretreat with a hydrogen peroxide solution before pickling, and then carry out the pickling after standing for a certain period of time. For example, the preconditioner is used to pretreat the material to be pickled with a hydrogen peroxide solution with a concentration of 3%-10%, and then the pickling device is used for the pickling after being left overnight. For example, the pickling is performed after standing for 10 hours. Preferably, every 1000g of the material to be pickled is pretreated with 100mL hydrogen peroxide solution. When hydrogen peroxide and hydrochloric acid are used together, it is extremely corrosive, so it needs to be placed for a certain period of time until the hydrogen peroxide is basically completely decomposed into oxygen and water.

Preferably, the pickling device is provided with a hydrochloric acid storage and a hydrochloric acid feeder, which are respectively used for storing hydrochloric acid and adding hydrochloric acid, that is, using hydrochloric acid for pickling. Preferably, the pickling device is further provided with a steam generator and a steam control valve for generating steam and controlling the output of steam, respectively. In this way, the temperature of the pickling environment can be heated by water vapor to improve the pickling efficiency. Preferably, the pickling device is equipped with a hydrochloric acid recoverer for recovering and reusing the pickling liquid after pickling, so as to save the amount of hydrochloric acid and reduce the pressure on environmental protection. Preferably, the hydrochloric acid recoverer is provided with an impurity filter, which is used to filter out impurities after recovering the pickling solution after pickling and before reusing the pickling solution after pickling; for example, remove the precipitate and take the liquid for repeated use. Preferably, the hydrochloric acid recovery device is also provided with a water absorber, which is used to separate out part of the water and concentrate the pickling solution after filtering out impurities. Preferably, the pickling device is provided with a cyclic pickling unit, which is used to control the pickling device to perform multiple pickling cycles, for example, to perform several picklings in sequence. And/or, the pickling device is provided with a multi-stage pickling unit for multiple pickling, for example, several stages of pickling are performed sequentially; for example, in each stage of pickling, the content of hydrochloric acid is different; for example, the sequence Several levels of pickling are carried out, and the concentration of hydrochloric acid in each level of pickling is set from low to high; as another example, in the pickling device, a leaching unit, a demineralized water cleaning unit and a pure water cleaning unit are also set, and the leaching unit is used for Drain hydrochloric acid, for example, use a hanging basket to drain until there is no continuous water flow; the demineralized water cleaning unit is used to clean the material with demineralized water, and the pure water cleaning unit is used to clean the material with pure water. Preferably, the pickling device is further provided with a dehydration unit for dehydrating the material to be pickled after pickling. Preferably, the pickling device is also provided with a drying unit connected to the dehydration unit for drying after dehydration.

For example, the pickling device is equipped with a pickling tank with water inlet valve and water discharge valve, hydrochloric acid storage and hydrochloric acid adder, water vapor generator and water vapor control valve, agitator with stirring motor, filter cloth bag, electric hoist , Vacuum filter tank and vacuum pump. For example, the pickling device adopts the following method for pickling: activated carbon activating material, that is, the material to be pickled, is sent to the pickling tank through a bucket elevator, put into tap water after adding the activating material, and then put it into the hydrochloric acid metering tank. Add a certain amount of hydrochloric acid; after that, start the stirring motor, the stirring speed can be set according to experience, or it can be slowly increased from slow to fast until the material does not fly off, and at the same time, open the steam valve to feed steam to make the material and acid fully contact; After the pool water boils and keeps boiling for 10 minutes, stop the air supply, then turn off the agitator motor; then open the drain valve to let off the pickling liquid; close the drain valve, open the water inlet valve and put in tap water, open the steam valve to start the water Cook; after the pickling pool boils, keep it for 10 minutes, then stop the air supply, turn off the agitator motor; open the water valve, and let off the washing liquid. Then use PH test paper to test the PH value. If the PH value meets the requirements, you can enter the next operation. If the PH value is unqualified, you can repeat the operation of adding tap water and opening the steam valve to start boiling, and then measure until the PH value meets the requirements. until. After the PH value is qualified, put the material into the filter bag. Use an electric hoist, such as an electric hoist, to hoist it into the vacuum filter tank. After putting the filter cloth bag into the vacuum filter tank, start the vacuum pump and observe the negative pressure gauge of the vacuum buffer tank. After the vacuum degree maintains a certain value, for example, keep the vacuum for a period of time. The certain value and/or the period of time can be determined according to the experiment or As determined empirically, turn off the vacuum pump. After waiting for the vacuum degree to return to the normal air pressure, use an electric hoist to lift the filter bag and send it to the next process. With this design, only one pickling tank can be used.

Preferably, the pickling device is also provided with a powdered carbon pickling unit for pickling, which has a better pickling effect on powdered carbon. Preferably, the powdered carbon pickling unit uses hydrochloric acid to perform the pickling. Preferably, the powdered carbon pickling unit is sealed and used to perform the pickling under sealed conditions. For example, the powdered carbon pickling unit is equipped with a condenser for absorbing volatilized hydrochloric acid through the condenser during pickling, and the condensed hydrochloric acid is returned to the pickling position for recycling. For example, the powdered carbon pickling unit is used to pump hydrochloric acid into the pickling tank through a vacuum pump during pickling, and then add a certain amount of pure water to mix to adjust the pH value. The pH value can be determined according to experience or historical data, and then Put in steam for cooking and stirring, stop the steam supply after 30 minutes, then use a vacuum filter to pump water mixed with hydrochloric acid into the storage tank, then put pure water into the pickling tank for washing, and put in steam for cooking, 30 After 30 minutes, pump water into the second water storage tank, then pass pure water into it for washing and stirring, no steam can be added, and the mixed slurry of water and charcoal will be output after 30 minutes. Preferably, the powdered carbon pickling unit is also provided with drying equipment for drying the mixed slurry. Preferably, the drying equipment includes rotary drying equipment, and/or, the drying equipment includes internal heat drying equipment. For example, the powdered carbon pickling unit is also provided with dehydration equipment for dehydration before drying. For example, the dehydration equipment includes centrifugal dehydration equipment, and/or, the dehydration equipment includes vacuum filtration equipment. Preferably, the dehydration equipment is used to reduce the moisture content of the material to below 50%. Preferably, the moisture content of the material is reduced to below 40%. Preferably, the centrifugal dehydration equipment is a centrifuge, for example, a centrifuge is used for dehydration treatment, for example, dehydration until the residual moisture content is lower than 50%. For example, the drying equipment is a drying furnace, such as a rotary drying furnace, which is used to pump the mixed slurry of water and charcoal into the centrifuge to dehydrate to about 50% by the mud pump, and then send it to the drying furnace from the conveyor. to dry. Preferably, the powdered carbon pickling unit is also provided with a cyclone collector for collecting powdery materials by cyclone collection, and/or, the powdered carbon pickling unit is also provided with a blanking port for collecting by direct blanking granular material. For example, the material is sent to the drying furnace through a conveyor. Preferably, the drying furnace is a rotary drying furnace, lined with a stainless steel lining plate, and the lining plate is welded as a lifting plate to facilitate the material to move forward. The drying method is Internal heat drying means that the material is in direct contact with hot air, which saves heat energy consumption, and has good drying effect and high efficiency. Preferably, a stainless steel hot blast stove is also provided for providing hot air, for example, exchanging heat through the heat sink of the gas generator and the hot blast stove, and the hot air is blown into the drying furnace by a blower. A cyclone dust collection device is added after the drying furnace, and it is also equipped with a direct discharge port. The powdery material is collected by the cyclone, and the granular material is directly discharged.

A specific application example is given below. For example, whether it is newly produced powdered activated carbon or regenerated powdered carbon, the indicators can be adjusted through pickling according to customer needs, such as removing iron ions, ash, and other heavy metals through pickling. Powdered carbon pickling is preferably carried out under sealed conditions. For example, firstly, powdered charcoal is transported to a mixing tank of about 10 cubic meters made of PE through a water tank, stirred evenly, and then transported to a pickling tank through a mud pump. The pickling tank is a 10 cubic meter PE storage tank with PE wrapped inside. The metal stirrer has an exhaust port, an acid inlet, a water inlet, an observation port, and a steam delivery port on the top; a 500-mesh filter cloth is used for pickling and filtering water below. The pickling is equipped with a condenser to absorb the volatile hydrochloric acid, and the condensed hydrochloric acid is returned to the pickling tank. The pickling tank is equipped with two acid adjustment tanks for the storage and proportioning of acid liquid. Hydrochloric acid is pumped into the pickling tank through a vacuum pump, then mixed with a certain amount of pure water according to the ratio data provided by the technology research and development center, and then steamed and stirred, and the steam supply is stopped after 30 minutes, and the mixed with The hydrochloric acid water is pumped into the storage tank, then the pure water is passed into the pickling tank for washing, and the steam is used for cooking. After 30 minutes, the water is pumped into the second storage tank, and then the pure water is passed into the washing and stirring After 30 minutes, the mixed slurry of water and charcoal is pumped into the centrifuge by the mud pump to dehydrate to about 50%, and sent to the drying furnace from the conveyor for drying to obtain the product.

Preferably, the pickling device is also provided with a granular carbon pickling unit for pickling, especially suitable for granular carbon pickling. For example, the granular carbon pickling unit is sequentially provided with a filter washing tank, a first pickling tank, a second pickling tank and a third pickling tank, as well as a hydrochloric acid storage device, a hydrochloric acid adder, a steam generator and a steam control valve. , Stirrer with stirring motor, filter bag, electric hoist, vacuum filter tank and vacuum pump. For example, put the charcoal to be pickled into the filter wash tank, then put it into the first pickling tank, add hydrochloric acid with a preset concentration, wherein the preset concentration can be determined based on experience or historical data, for example, 1mol/L to 5mol /L or others; then heat up to 80 degrees with steam, and stir while steaming. Then remove the filter wash tank from the first pickling tank, drain the water, e.g. filter out most of the water, e.g. no more continuous water flow, only intermittent water droplets, then put in the second pickling tank, add demineralized water , add steam to 80 degrees, stir while adding steam, take it out after 30 minutes, drain the water, then put it into the third pickling tank, add pure water, stir and rinse, drain the water, then dehydrate and dry. For example, rotary drying is used; preferably, internal heating drying equipment is also used for internal heating drying, at this time, the material is in direct contact with hot air, which saves heat energy consumption, and has good drying effect and high efficiency. For example, the granular carbon pickling unit is equipped with 4 resin acid-resistant pools and hoisting equipment, as well as filter washing tanks, steam pipes, pure water pipes and soft water pipes, etc. First, put about 300 kg of charcoal to be pickled into the filter washing tank, hoist it into the first pickling tank, add water and hydrochloric acid, heat it to 80 degrees with steam, and stir while passing steam. After 30 minutes, stop the steam, lift out the filter wash tank, seep most of the water through the small holes around the filter wash tank, and then hang it into the second pickling tank, add softened water to the tank, add steam to 80 degrees, and Stir while adding steam, take it out after 30 minutes, drain the water, hoist it into the third pickling pool, add pure water to the pool, stop steaming, stir and rinse, then put it into the fourth pool to drain. The water-acid mixture in the first pickling tank is put into the corresponding water storage tank on the lower side of the first pickling tank after there are too many impurities in the liquid, and the second pickling water is put into the corresponding second water storage tank, and the When the pickling pool needs to replenish water, give replenishment water. So on and so forth. The drained material is hoisted into the separator to remove the water to 50%, and then sent to the drying furnace by the conveyor for drying to obtain the material to be ground.

Preferably, the grinding device is provided with a soft material grinding unit, and/or, the grinding device is provided with a hard material grinding unit. In this way, by dividing powder grinding into soft material grinding and hard material grinding, soft material grinding or hard material grinding can be selected according to the hardness of the material. This kind of charcoal has low hardness and is easy to break, which can be beneficial Save energy and reduce equipment wear and tear. For example, soft material grinding unit is used to grind soft material for activated carbon produced from wood veneer, straw and other raw materials, and hard material grinding unit is used to grind hard material for activated carbon produced from bamboo, wood and other raw materials. For example, the soft material grinding unit is provided with a collar-type crushing device. For example, there are 6 rotating stainless steel blades in the collar-type crushing device, and the passing materials are crushed into powder under the blade collar. Then enter the vacuum packaging machine. Another example is that hard materials are sent to Raymond Mill for grinding, transported by vacuum air flow into the silo, and then transferred to the vacuum packaging machine for packaging. The whole system has continuous production, continuous feeding and discharging, and is equipped with a mixing device after grinding, and the product is proportioned according to customer needs. For example, a sieving device is also provided for sieving and classifying the ground carbon powder. After processing, the ground toner is introduced into a sealed output bin. Preferably, a mixer is also provided for mixing the ground or sieved and classified carbon powder, so that the proportioning can be performed flexibly according to the needs of users. For example, the mixer is provided with several weight tanks and a mixing tank with several air inlets for mixing the toner in the weight tank in the mixing tank by wind force.

As another example, a waste recycling device includes the activated carbon production device described in any of the above embodiments, or it has the technical features of the activated carbon production device described in any of the above embodiments.

Furthermore, the embodiments of the present invention also include the activated carbon production device or the waste recycling device formed by combining the technical features of the above embodiments.

It should be noted that the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present invention; and, for those of ordinary skill in the art, improvements can be made according to the above description Or transformation, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. an activated carbon production apparatus, is characterized in that, comprises activating apparatus, pickler, drying unit and milling apparatus that order is arranged.

2. activated carbon production apparatus according to claim 1, it is characterized in that, also comprise heating carbonizing apparatus, it connects described activating apparatus, for will raw material carbonize after obtain for activating carbonized material.

3. activated carbon production apparatus according to claim 2, is characterized in that, described heating carbonizing apparatus order arranges cracker, lower furnace body and feed box;

Described cracker is used for raw material cracking to carbonize, and is tentatively carbonized material;

Described lower furnace body is used for described preliminary charing material to carbonize completely, obtains carbonized material;

Described feed box is for collecting described carbonized material and exporting.

4. activated carbon production apparatus according to claim 3, is characterized in that, described cracker order arranges opening for feed, drying zone and char zone.

5. activated carbon production apparatus according to claim 4, it is characterized in that, described cracker arranges bilayer sleeve;

In the internal layer of described bilayer sleeve, an end is described opening for feed, and the other end arranges the cracking discharge port that Open Side Down, for described preliminary charing material being sent to described lower furnace body by freely falling body mode;

Described drying zone and described char zone are arranged in the internal layer of described bilayer sleeve.

6. activated carbon production apparatus according to claim 5, it is characterized in that, the interlayer of described bilayer sleeve is hot air passage, and its first tunnel inlet is communicated with within described char zone, and ducting outlet is near described opening for feed.

7. activated carbon production apparatus according to claim 6, it is characterized in that, the second tunnel inlet of described hot air passage is communicated with described lower furnace body.

8. activated carbon production apparatus according to claim 7, it is characterized in that, described second tunnel inlet arranges the second induced draft fan.

9. according to the arbitrary described activated carbon production apparatus of claim 1 to 8, it is characterized in that, described feed box arranges gas-tight silo, arranges for sealing after the described carbonized material of collection.

10. activated carbon production apparatus according to claim 9, it is characterized in that, described feed box also arranges water cooler, for the described carbonized material exported after sealing is cooled to less than 40 DEG C.