CN210532392U - Rotary kiln pyrolysis plasma melting integrated solid waste treatment device - Google Patents
Rotary kiln pyrolysis plasma melting integrated solid waste treatment device Download PDFInfo
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- CN210532392U CN210532392U CN201921189342.7U CN201921189342U CN210532392U CN 210532392 U CN210532392 U CN 210532392U CN 201921189342 U CN201921189342 U CN 201921189342U CN 210532392 U CN210532392 U CN 210532392U
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Abstract
The utility model discloses a rotary kiln pyrolysis plasma melting integral type solid waste processing apparatus, including rotary kiln, rotary kiln feeding unit and plasma furnace, the rotary kiln slope sets up lower part intercommunication in with the plasma furnace, and plasma furnace upper portion both sides wall sets up the entry of once wind and overgrate air entry, sets up two plasma torches with rotary kiln junction lower part, and plasma furnace lower part right side sets up the melting zone overflow mouth, and the melting slurry flows into slag removal channel through the melting zone overflow mouth, and slag removal channel upper portion sets up silicon molybdenum bar heating system. The utility model discloses the high temperature melting characteristic that utilizes the rotary kiln to the flexibility that the material burns and plasma torch makes the material get into plasma furnace can the abundant burning and melting after the rotary kiln burns, burns up the organic matter in the rotary kiln to carry out the postcombustion with the synthetic gas that the rotary kiln burns after burning with plasma furnace, reduce the generation of dioxin by a wide margin, improve solid waste's combustion treatment effect, reach solid waste minimizing, innoxious effect.
Description
Technical Field
The utility model relates to a solid waste treatment device, concretely relates to rotary kiln pyrolysis plasma melting integral type solid waste treatment device.
Background
With the continuous development of the solid waste treatment, the requirement of China on the solid waste treatment is higher and higher, the currently applied waste treatment technology, such as waste incineration, landfill treatment and the like, can effectively reduce the discharge of the solid waste, and the environmental protection is improved to a certain extent. In order to reduce the environmental pollution of the solid waste, it is necessary to improve the working efficiency of the solid waste treatment.
The types of furnaces for incinerating and treating hazardous wastes at home and abroad are more, and mainly comprise: rotary kiln incinerators, fluidized bed incinerators, liquid jet furnaces, and the like. Except the rotary kiln, other furnace types have certain requirements on the size and the state of the materials, and the rotary kiln incinerator can adapt to solid, liquid and semi-solid wastes by adjusting the retention time of the materials in a hearth according to the properties of the solid wastes, is flexible and controllable to operate, and is the main furnace type for incinerating and treating the solid wastes at present.
However, the incineration efficiency of the rotary kiln for treating solid wastes is low, the temperature of the discharged flue gas is low, dioxin is inevitably generated in the incineration process, the heat decreasing rate of the incineration residues is high, secondary pollutants are generated, the garbage is directly gasified by using the plasma torch alone, the garbage cannot be completely treated at high temperature due to uneven temperature field distribution, and a large amount of dioxin and other harmful substances are contained in the discharged waste residues, so that the treatment of the waste residues becomes a difficult problem. Therefore, it is required to provide a solid waste treatment apparatus which can thoroughly treat solid waste, greatly reduce the emission concentration of dioxin, increase the heat reduction rate of waste slag, and utilize heavy metals in the solid waste as resources.
Disclosure of Invention
Defect and not enough to among the prior art, the utility model provides a rotary kiln pyrolysis plasma melting integral type solid waste processing apparatus, the high temperature melting characteristic of utilizing the rotary kiln to the flexibility that the material burns and plasma torch makes the material get into the plasma stove after the rotary kiln burns and can the intensive combustion and the melting, burn up the organic matter in the rotary kiln, the inorganic matter becomes the parcel at the vitreous body, and carry out the postcombustion with the synthetic gas of rotary kiln and plasma stove after burning, reduce the generation of dioxin by a wide margin, improve solid waste's combustion treatment effect, reach solid waste minimizing, innoxious effect.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a rotary kiln pyrolysis plasma melting integrated solid waste treatment device comprises a horizontally arranged rotary kiln and a vertically arranged plasma furnace which are communicated with each other, wherein the rotary kiln is downwards inclined at the joint of the rotary kiln and the plasma furnace;
the plasma furnace comprises a synthetic gas outlet, an upper furnace body, a conical necking connecting section and a lower furnace body from top to bottom in sequence; the diameter of the lower furnace body is smaller than that of the upper furnace body, and the rotary kiln is communicated with the lower furnace body;
a kiln head cover is arranged at a feed port of the rotary kiln, a feeding unit is connected to the kiln head cover and comprises an inclined chute which is communicated with the feed port and inclines downwards, a blanking hopper arranged above the inclined chute and a push rod feeder arranged at the upper part of the inclined chute; a combined burner is arranged at a feed inlet below the inclined chute, and a waste liquid spray gun is arranged on the combined burner.
The utility model discloses still include following technical characteristic:
specifically, the inclination angle of the rotary kiln is 5-10 degrees; the kiln head cover is of a self-supporting structure, so that the thrust generated by the material pushing mechanism is prevented from being transmitted to the rotary kiln.
Specifically, a horizontal primary air inlet and a secondary air inlet inclined to the lower part in the upper furnace body are arranged on the furnace wall of the upper furnace body from top to bottom; two primary air inlets are arranged on the furnace walls at two sides of the upper furnace body respectively; the two secondary air inlets are respectively positioned below the two primary air inlets; the included angle between the secondary air inlet and the horizontal direction is 10-60 degrees; and the secondary air inlets are electric swirl air inlets to adjust the air supply angle and air supply quantity at will.
Specifically, a plasma torch which is inclined towards the lower part in the lower furnace body is arranged on the side wall of the lower furnace body, and the plasma torch is positioned below the rotary kiln; there are two plasma torches.
Specifically, a melting zone overflow port is arranged on the furnace wall of the lower furnace body below the plasma torch, and the melting zone overflow port and the rotary kiln are positioned on two sides of the plasma furnace; the overflow port of the melting area is connected with a slag discharge channel, and a silicon-molybdenum rod heating system is arranged on the slag discharge channel.
Specifically, the diameter of an overflow port of the melting region is 10cm-40cm, and a liquid level meter is arranged at the overflow port of the melting region;
the molten slag discharged from the overflow port of the melting zone enters a slag discharging channel, the slag discharging channel is a cylindrical shell body which is inclined downwards, and the inclination angle of the slag discharging channel is 4-8 degrees; the silicon-molybdenum rod heating system comprises: a silicon-molybdenum rod and a plug brick made of foam corundum and used for installing the silicon-molybdenum rod; the silicon-molybdenum rod heating system is inserted in the free space on the side wall of the slag discharge channel.
Specifically, a corundum brick is arranged in a bottom melting zone in the plasma furnace, and a corundum brick is arranged in the slag discharge channel.
Specifically, the furnace wall of the plasma furnace and the side wall of the slag discharge channel are both a refractory material layer and a heat insulation material layer which are arranged in a close fit manner from inside to outside.
Specifically, a clean discharge port is arranged on the side wall of the bottom of the plasma furnace, and the clean discharge port and the rotary kiln are positioned on the same side of the plasma furnace; the diameter of the drain port is 20-30 cm.
Compared with the prior art, the utility model, profitable technological effect is:
(1) the rotary kiln and plasma melting integrated solid waste treatment device is adopted, the flexibility of the rotary kiln to material burning and the high-temperature melting characteristic of the plasma torch are utilized to enable the material to enter the plasma furnace after the rotary kiln burning to be fully combusted and melted, organic matters in the rotary kiln are burnt out, the inorganic matters are fully melted, and the combustion effect is improved.
(2) The synthesis gas after burning in the rotary kiln and the plasma furnace is subjected to secondary combustion, so that the generation of dioxin is greatly reduced, the combustion treatment effect of solid wastes is improved, and the effects of reducing and harmlessly treating the solid wastes are achieved.
(3) The primary air and the secondary air adopt a cyclone air inlet, and the secondary air inlet is an electric cyclone air inlet. The air supply angle and the air supply quantity can be adjusted at will, so that the flue gas and the slag can be fully combusted, and the combustion efficiency is improved.
(4) The silicon-molybdenum rod heating system arranged on the slag discharge channel can prevent molten slurry from being adhered to the slag discharge channel, and the service life of the plasma furnace is prolonged.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
the reference numerals in the figures denote: 1-rotary kiln, 2-plasma furnace, 3-feeding unit, 4-combined burner;
11-kiln head cover; 21-a synthesis gas outlet, 22-an upper furnace body, 221-a primary air inlet, 222-a secondary air inlet, 23-a conical necking connecting section, 24-a lower furnace body, 241-a plasma torch, 242-a melting zone overflow port, 243-a slag discharge channel and 244-a silicon-molybdenum rod heating system; 25-corundum brick, 26-refractory material layer, 27-heat insulation material layer and 28-drain port;
31-inclined chute, 32-blanking hopper, 33-push rod feeder; 41-waste liquid spray gun.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
Example 1:
as shown in fig. 1, the utility model provides a rotary kiln pyrolysis plasma melting integrated solid waste treatment device, which comprises a horizontally arranged rotary kiln 1 and a vertically arranged plasma furnace 2 which are communicated with each other, wherein the rotary kiln 1 is inclined downwards at the joint of the rotary kiln 1 and the plasma furnace 2; the plasma furnace 2 comprises a synthetic gas outlet 21, an upper furnace body 22, a conical necking connecting section 23 and a lower furnace body 24 from top to bottom in sequence; the diameter of the lower furnace body 24 is smaller than that of the upper furnace body 22, and the rotary kiln 1 is communicated with the lower furnace body 24; a kiln head cover 11 is arranged at a feeding hole of the rotary kiln 1, a feeding unit 3 is connected to the kiln head cover 11, and the feeding unit 3 comprises an inclined chute 31 which is communicated with the feeding hole and inclines downwards, a blanking hopper 32 arranged above the inclined chute 31 and a push rod feeder 33 arranged at the upper part of the inclined chute 31; a combined burner 4 is arranged at a feed inlet below the inclined chute 31, and a waste liquid spray gun 41 is arranged on the combined burner 4.
In the embodiment, the inclination angle of the rotary kiln 1 is 5-10 degrees; the kiln head cover 11 is a self-supporting structure, and the thrust generated by the material pushing mechanism is prevented from being transmitted to the rotary kiln 1.
A horizontal primary air inlet 221 and a secondary air inlet 222 inclined towards the lower part in the upper furnace body 22 are arranged on the wall of the upper furnace body 22 from top to bottom; two primary air inlets 221 are respectively and horizontally arranged on the furnace walls at two sides of the upper furnace body 22; two secondary air inlets 222 are provided, and the two secondary air inlets 222 are respectively positioned below the two primary air inlets 221; the included angle between the secondary air inlet 222 and the horizontal direction is 10-60 degrees; and the secondary air inlets 222 are all electric swirl air inlets to adjust the air supply angle and air supply quantity at will.
A plasma torch 241 which inclines towards the lower part in the lower furnace body 24 is arranged on the side wall of the lower furnace body 24, and the plasma torch 241 is positioned below the rotary kiln 1; there are two plasma torches 241.
A melting zone overflow port 242 is arranged on the furnace wall of the lower furnace body 24 below the plasma torch 241, and the melting zone overflow port 242 and the rotary kiln 1 are positioned at two sides of the plasma furnace 2; the overflow port 242 of the melting zone is connected with a slag discharge channel 243, and a silicon-molybdenum rod heating system 244 is arranged on the slag discharge channel 243.
The diameter of the overflow port 242 of the melting area is 10cm-40cm, and the overflow port 242 of the melting area is provided with a liquid level meter; the molten slag discharged from the overflow port 242 of the melting zone enters a slag discharge channel 243, the slag discharge channel 243 is a cylindrical shell body which is inclined downwards, and the inclination angle of the slag discharge channel 243 is 4-8 degrees; the silicon molybdenum rod heating system 244 includes: a silicon-molybdenum rod and a plug brick made of foam corundum and used for installing the silicon-molybdenum rod; the silicon-molybdenum rod heating system 244 is inserted in the hollow space of the side wall of the deslagging channel 243.
Corundum bricks 25 are provided in the bottom melting zone in the plasma furnace 2, and corundum bricks are provided in the slag discharge channel 243.
The furnace wall of the plasma furnace 2 and the side wall of the slag discharge passage 243 are both a refractory material layer 26 and a heat insulating material layer 27 which are closely attached from inside to outside.
A clean discharge port 28 is arranged on the side wall of the bottom of the plasma furnace 2, and the clean discharge port 28 and the rotary kiln 1 are positioned at the same side of the plasma furnace 2; the diameter of the drain port 28 is 20-30 cm.
The operation method of the embodiment comprises the following steps:
the push rod feeder pushes the solid waste in the blanking hopper to the head of the rotary kiln through the inclined chute, and the solid waste enters the rotary kiln, and simultaneously combustion-supporting air enters from the head and is fully mixed with the solid waste. The tail part of the rotary kiln is slowly moved along with the rotation of the rotary kiln, and the whole process of drying, burning and burning out is finished. The slag after burning falls into the plasma stove, utilizes the high temperature characteristic of plasma torch to melt the slag in the rotary kiln in the plasma stove, and high temperature fully burns the synthetic gas of rotary kiln simultaneously, reduces the production of dioxin by a wide margin, has improved the combustion effect of solid waste, and the molten slurry in the molten bath is stored and is got into the slag discharging channel through the overflow mouth after a certain amount, and the silicon molybdenum bar heating system in the slag discharging channel heats the molten slurry, makes the molten slurry can be got rid of from slag discharging channel right side smoothly. And opening a clean discharge port to discharge molten pool molten slurry after the system operates for a certain time, discharging the synthetic gas after secondary combustion of the plasma furnace from a synthetic gas outlet at the top of the plasma furnace, and allowing the synthetic gas to enter a subsequent tail gas treatment device.
The detailed description of the embodiments of the present invention has been described above with reference to the drawings, but the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention to perform various simple modifications, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (9)
1. The rotary kiln pyrolysis plasma melting integrated solid waste treatment device is characterized by comprising a horizontally arranged rotary kiln (1) and a vertically arranged plasma furnace (2) which are communicated with each other, wherein the rotary kiln (1) is downwards inclined at the joint of the rotary kiln and the plasma furnace (2);
the plasma furnace (2) is provided with a synthetic gas outlet (21), an upper furnace body (22), a conical necking connecting section (23) and a lower furnace body (24) from top to bottom in sequence; the diameter of the lower furnace body (24) is smaller than that of the upper furnace body (22), and the rotary kiln (1) is communicated with the lower furnace body (24);
a kiln head cover (11) is arranged at a feed inlet of the rotary kiln (1), a feeding unit (3) is connected to the kiln head cover (11), and the feeding unit (3) comprises an inclined chute (31) which is communicated with the feed inlet and inclines downwards, a blanking hopper (32) arranged above the inclined chute (31), and a push rod feeder (33) arranged at the upper part of the inclined chute (31); a feed inlet below the inclined chute (31) is provided with a combined burner (4), and the combined burner (4) is provided with a waste liquid spray gun (41).
2. The rotary kiln pyrolysis plasma melting integrated solid waste treatment apparatus as claimed in claim 1, wherein the rotary kiln (1) is inclined at an angle of 5 ° -10 °; the kiln head cover (11) is of a self-supporting structure, and the thrust generated by the material pushing mechanism is prevented from being transmitted to the rotary kiln (1).
3. The rotary kiln pyrolytic plasma melting integrated solid waste treatment device according to claim 1, wherein the wall of the upper furnace body (22) is provided with a horizontal primary air inlet (221) and a secondary air inlet (222) inclined to the lower part of the upper furnace body (22) from the top down; two primary air inlets (221) are respectively and horizontally arranged on the furnace walls at two sides of the upper furnace body (22); the number of the secondary air inlets (222) is two, and the two secondary air inlets (222) are respectively positioned below the two primary air inlets (221); the included angle between the secondary air inlet (222) and the horizontal direction is 10-60 degrees; and the secondary air inlets (222) are all electric swirl air ports so as to adjust the air supply angle and the air supply quantity at will.
4. The rotary kiln pyrolytic plasma melting integrated solid waste treatment device according to claim 1, wherein a plasma torch (241) inclined to the lower inside of the lower furnace body (24) is provided on the side wall of the lower furnace body (24), and the plasma torch (241) is located below the rotary kiln (1); the plasma torches (241) are two in number.
5. The rotary kiln pyrolytic plasma melting integrated solid waste treatment device according to claim 4, wherein a melt overflow port (242) is provided on the wall of the lower furnace body (24) below the plasma torch (241), and the melt overflow port (242) and the rotary kiln (1) are located at both sides of the plasma furnace (2); the overflow port (242) of the melting zone is connected with a slag discharge channel (243), and a silicon-molybdenum rod heating system (244) is arranged on the slag discharge channel (243).
6. The rotary kiln pyrolysis plasma melting integrated solid waste treatment device according to claim 5, wherein the diameter of the melting zone overflow port (242) is 10cm-40cm, and the melting zone overflow port (242) is provided with a liquid level meter;
slag discharged from an overflow port (242) of the melting zone enters a slag discharge channel (243), the slag discharge channel (243) is a cylindrical shell body inclining downwards, and the inclination angle of the slag discharge channel (243) is 4-8 degrees; the silicon molybdenum rod heating system (244) comprises: a silicon-molybdenum rod and a plug brick made of foam corundum and used for installing the silicon-molybdenum rod; the silicon-molybdenum rod heating system (244) is inserted into the vacant space on the side wall of the slag discharging channel (243).
7. The rotary kiln pyrolytic plasma melting integrated solid waste treatment device according to claim 5, wherein corundum bricks (25) are provided in the bottom melting zone in the plasma furnace (2) and corundum bricks are provided in the slag discharge channel (243).
8. The rotary kiln pyrolytic plasma melting integrated solid waste treatment device according to claim 5, wherein the furnace wall of the plasma furnace (2) and the side wall of the slag discharge channel (243) are a refractory material layer (26) and a heat insulating material layer (27) which are arranged in close contact from inside to outside.
9. The rotary kiln pyrolysis plasma melting integrated solid waste treatment device as claimed in claim 1, wherein a drain port (28) is provided on the side wall of the bottom of the plasma furnace (2), the drain port (28) and the rotary kiln (1) are located on the same side of the plasma furnace (2); the diameter of the cleaning opening (28) is 20-30 cm.
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| CN201921189342.7U CN210532392U (en) | 2019-07-26 | 2019-07-26 | Rotary kiln pyrolysis plasma melting integrated solid waste treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111623355A (en) * | 2020-06-09 | 2020-09-04 | 深圳市海文环保技术有限公司 | Multi-process cooperative plasma hazardous waste disposal device |
| CN111664457A (en) * | 2020-07-01 | 2020-09-15 | 河南青展实业有限责任公司 | Plasma arc internal heating continuous pyrolysis device |
| CN112524615A (en) * | 2020-12-15 | 2021-03-19 | 东方电气洁能科技成都有限公司 | Small skid-mounted plasma gasification melting treatment device for waste |
| CN112815717A (en) * | 2020-12-28 | 2021-05-18 | 航天推进技术研究院 | Plasma melting furnace |
| CN113154872A (en) * | 2021-04-22 | 2021-07-23 | 重庆科技学院 | Low-temperature plasma combined rotary kiln |
| CN113339807A (en) * | 2021-05-28 | 2021-09-03 | 西安交通大学 | Pyrolysis and plasma melting synergic cracking furnace for solid waste |
| CN113669732A (en) * | 2021-08-27 | 2021-11-19 | 中野环保科技(重庆)股份有限公司 | System and method for pyrolysis of organic hazardous waste rotary kiln and fusion coupling treatment of plasma furnace |
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| CN111623355A (en) * | 2020-06-09 | 2020-09-04 | 深圳市海文环保技术有限公司 | Multi-process cooperative plasma hazardous waste disposal device |
| CN111664457A (en) * | 2020-07-01 | 2020-09-15 | 河南青展实业有限责任公司 | Plasma arc internal heating continuous pyrolysis device |
| WO2022011756A1 (en) * | 2020-07-15 | 2022-01-20 | 浙江伟博环保设备科技股份有限公司 | Incinerator waste residue plasma treatment device |
| CN112524615A (en) * | 2020-12-15 | 2021-03-19 | 东方电气洁能科技成都有限公司 | Small skid-mounted plasma gasification melting treatment device for waste |
| CN112815717A (en) * | 2020-12-28 | 2021-05-18 | 航天推进技术研究院 | Plasma melting furnace |
| CN112815717B (en) * | 2020-12-28 | 2022-11-04 | 航天推进技术研究院 | Plasma melting furnace |
| CN113154872A (en) * | 2021-04-22 | 2021-07-23 | 重庆科技学院 | Low-temperature plasma combined rotary kiln |
| CN113339807A (en) * | 2021-05-28 | 2021-09-03 | 西安交通大学 | Pyrolysis and plasma melting synergic cracking furnace for solid waste |
| CN113669732A (en) * | 2021-08-27 | 2021-11-19 | 中野环保科技(重庆)股份有限公司 | System and method for pyrolysis of organic hazardous waste rotary kiln and fusion coupling treatment of plasma furnace |
| CN113915619A (en) * | 2021-11-11 | 2022-01-11 | 南京创能电力科技开发有限公司 | Waste fan blade treatment device for rotary kiln and plasma melting furnace |
| CN115164215A (en) * | 2022-07-12 | 2022-10-11 | 中科云越(北京)科技发展有限公司 | Thermal plasma torch solid waste incineration power generation system and incineration power generation method |
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