CN204529745U - A kind of drum-type cotton stalk continuously carbonizing system - Google Patents

Abstract

A drum type cotton stalk continuous carbonization system, the system consists of a cotton stalk grinder (1), a cyclone separator (2), a screw feeder (3), a dryer (4), and a screw feeder (5) , drum-type cotton stalk retort furnace (6), heating furnace (7), rotary drive device (8), blower fan (9), combustible gas recovery and purification device (10), tar separator (11), cooling separator (12 ), a neutralization purifier (13), a water-cooled discharger (14), and a rod making machine (15). In this system, the drum-type cotton stalk retort furnace (6) is a rotating airtight container. Rod enters the drum-type cotton stalk retort furnace (6) to generate cotton stalk charcoal, which is discharged after being cooled by the water-cooled discharger (14), and then made into cotton stalk carbon rods in the rod making machine (15), and the drum-type cotton stalk carbonization The exhaust gas discharged from the furnace (6) is purified and re-passed into the heating furnace (7) for combustion. This system can realize the large-scale continuous production of cotton stalks from crushing and drying to dry distillation and carbonization, and finally producing cotton stalks and carbon rods.

Description

A drum type cotton stalk continuous carbonization system

Technical field

The utility model relates to a dry distillation carbonization system for cotton stalks, in particular to a drum type continuous carbonization system for cotton stalks.

Background technique

In recent years, through independent innovation, introduction, digestion and absorption, my country has made some breakthroughs in the comprehensive utilization technology of crop straws. Straws have been used only as rural life energy and livestock feed in the past, and have expanded to fertilizers, feeds, edible fungus base materials, industrial raw materials and fuels. and other purposes; from the traditional agricultural field in the past to the modern industry and energy field. The energy utilization of straw has undergone a qualitative change, from low-efficiency burning of farmers to high-efficiency utilization of straw direct combustion for power generation, straw biogas, straw solidification, and straw dry distillation. Cotton straw is an important biomass energy. The heat value of 2 tons of straw energy utilization can replace 1 ton of standard coal. The promotion of straw energy utilization can effectively reduce primary energy consumption. Straw energy utilization technologies mainly include straw biogas (biogasification), straw solidified molding fuel, straw pyrolysis gasification, direct combustion power generation and straw dry distillation, carbonization and activation.

At present, the carbonization methods in the domestic production mechanism charcoal process are mainly divided into two types: earth kiln carbonization and pyrolysis process. Earth kilns are suitable for sites far away from residential areas. The construction materials are ordinary bricks, yellow mud, sand and a small amount of industrial salt, and the construction cost is low. Because of its unique heat preservation performance, it is suitable for firing medium-high temperature machine-made charcoal. The firing process does not consume electricity or fuel, and the heat generated by the spontaneous combustion of the rod is completely isolated from oxygen carbonization. However, earth kilns also have many disadvantages, such as a long carbonization cycle, generally 15 to 20 days; slow cooling, usually watering to cool down, which affects the quality of charcoal; no tar removal device, and waste smoke pollutes the surrounding environment. The pyrolysis process is an efficient and clean dry distillation carbonization process with the fastest charcoal production, the highest output, and no smoke. The principle of pyrolysis is to put the fuel rods in a closed pyrolysis furnace. Through heating and pyrolysis, a series of chemical changes will occur in the fuel rods during this process, so substances such as evaporation, water, carbon monoxide, and methane are produced. Through The final products obtained after cooling in the cooling furnace include machine-made charcoal, wood tar, wood vinegar, and flammable gas. Part of the combustible gas is then supplied to the pyrolysis furnace as fuel through pipelines, and can also be used for product drying and heating. The utility model is an improved pyrolysis process.

Utility model content

The utility model proposes a drum-type continuous carbonization system for cotton stalks, which can realize the large-scale continuous production of cotton stalks from pulverization and drying to dry distillation and carbonization, and finally produce cotton stalk carbon rods, and simultaneously recover various dry distillation products.

The technical solution adopted by the utility model to solve its technical problems is as follows:

A drum-type cotton stalk continuous carbonization system, the system consists of a cotton stalk grinder, a cyclone separator, a screw feeder, a dryer, a screw feeder, a drum-type cotton stalk carbonization furnace, a heating furnace, a rotary drive device, Composed of fan, combustible gas recovery and purification device, tar separator, cooling separator, neutralization purifier, water-cooled discharger, and rod making machine.

The cotton stalk pulverizer grinds the cotton stalks into 2-3cm particle size, and then feeds them into the cyclone separator, the bottom part of the cyclone separator separates the cotton stalks with a particle size of 0.5-1cm, and the upper part separates the cotton stalk skin; the cyclone separator passes through The screw feeder is connected with a dryer, and the dryer dries the cotton stalks until the water content is lower than 10%, and the dryer is connected with a drum type cotton stalk retort furnace through a screw feeder.

The drum-type cotton stalk retort furnace has an inclination angle of 3°, a length of 6 m, and an inner diameter of 1.5 m. It is rotated by a rotating drive device at a speed of 3 r/min.

The combustible gas recovery and purification device is composed of a tar separator, a cooling separator, and a neutralization purifier, and the combustible gas recovery and purification device is connected to the heating furnace through a pipeline.

The rod making machine adds a binder to the cotton stalk carbon powder discharged after the water-cooled discharger cools down, and compresses and molds the cotton stalk carbon rods.

The beneficial effects of the utility model compared with the prior art are:

1. The drum-type cotton stalk continuous carbonization system adopts a drum-type cotton stalk retort furnace, the operating speed can be manually controlled according to requirements, and the material is heated evenly during the rotation of the furnace body, and the pyrolysis speed is fast.

2. The drum-type cotton stalk continuous carbonization system can recover various dry distillation products.

3. The drum-type cotton stalk continuous carbonization system can be used for large-scale continuous production of cotton stalk carbon rods.

Description of drawings

Accompanying drawing is the system diagram of the utility model.

In the figure, 1 is a cotton stalk pulverizer, 2 is a cyclone separator, 3 is a screw feeder, 4 is a dryer, 5 is a screw feeder, 6 is a drum type cotton stalk retort furnace, 7 is a heating furnace, 8 9 is a fan, 10 is a combustible gas recovery and purification device, 11 is a tar separator, 12 is a cooling separator, 13 is a neutralization purifier, 14 is a water-cooled discharger, and 15 is a rod making machine.

Detailed ways

Below in conjunction with accompanying drawing, the concrete implementation of the present utility model is described in further detail.

As shown in the figure, described a kind of drum type cotton stalk continuous carbonization system, this system consists of cotton stalk pulverizer (1), cyclone separator (2), screw feeder (3), dryer (4), Screw feeder (5), drum type cotton stalk carbonization furnace (6), heating furnace (7), rotary drive device (8), fan (9), combustible gas recovery and purification device (10), tar separator (11 ), a cooling separator (12), a neutralization purifier (13), a water-cooled discharger (14), and a rod making machine (15). The cotton stalk pulverizer (1) crushes the cotton stalks into 2-3cm particle size, and passes them into the cyclone separator (2), the bottom part of the cyclone separator (2) separates the 0.5-1cm particle size cotton stalks, and the upper part separates the cotton stalks skin; the cyclone separator (2) is connected with the dryer (4) through the screw feeder (3), and the dryer (4) dries the cotton stalk separated from the bottom of the cyclone separator (2) until the moisture content is lower than 10 %, then pass into the drum type cotton stalk retort furnace (6) by screw feeder (5). The drum-type cotton stalk retort furnace (6) rotates itself through the rotating drive device (8), so that the cotton stalks are heated evenly, and the fine cotton stalks entering the drum-type cotton stalk retort furnace (6) are heated at 450°C (material temperature). About 1 hour of cracking, the temperature in the furnace is controlled by the combustion of the internal gas of the heating furnace (7). The cotton stalk carbon powder produced after dry distillation is cooled to about 120°C by the water-cooled discharger (14) and discharged, and the rod making machine (15) adds a binder to the cotton stalk carbon powder discharged from the water-cooled discharger (14), and compression molding It is cotton stalk carbon stick.

The blower fan (9) passes the high-temperature waste gas containing tar and wood vinegar obtained after the dry distillation of the cotton stalk carbonization furnace (6) into the combustible gas recovery and purification device (10), and the combustible gas recovery and purification device (10) is controlled by the tar separator (11 ), a cooling separator (12), and a neutralization purifier (13), the high-temperature exhaust gas first enters the tar separator (11), and the bottom of the tar separator (11) separates wood tar, which is sent to the wood tar tank area, and is loaded The high-temperature waste gas enters the cooling separator (12) to condense to obtain the wood vinegar liquid product, which is sent to the wood vinegar liquid tank area for storage, and finally the waste gas enters the neutralization purifier (13) to remove acidic substances such as acetic acid in the gas, The gas after deacidification is sent into the heating furnace (7) for combustion.

Finally, it should be noted that the above narration is only a preferred example of the utility model rather than a limitation to the process technology of the utility model. within the scope of protection.

Claims (7)

1. a drum type cotton stalk continuous carbonization system, the system consists of cotton stalk pulverizer (1), cyclone separator (2), screw feeder (3), drying machine (4), screw feeder ( 5), drum type cotton stalk carbonization furnace (6), heating furnace (7), rotary drive device (8), fan (9), combustible gas recovery and purification device (10), tar separator (11), cooling separator (12), neutralization purifier (13), water-cooled discharge device (14), rod making machine (15) constitute. 2. A drum-type cotton stalk continuous carbonization system according to claim 1, characterized in that: said cotton stalk grinder (1) crushes cotton stalks into 2-3 cm particle diameters. 3. A kind of drum-type cotton stalk continuous carbonization system according to claim 1, characterized in that: the bottom of the cyclone separator (2) separates the cotton stalks with a particle size of 0.5-1 cm, and the upper part separates the cotton stalk skins, The cyclone separator (2) is connected with the dryer (4) through a screw feeder (3). 4. A drum-type cotton stalk continuous carbonization system according to claim 1, characterized in that: the dryer (4) dries the cotton stalks until the water content is lower than 10%, and the dryer (4) It is connected with a drum-type cotton stalk retort furnace (6) through a screw feeder (5). 5. A drum-type cotton stalk continuous carbonization system according to claim 1, characterized in that: the drum-type cotton stalk carbonization furnace (6) has an inclination angle of 3°, a length of 6m, and an inner diameter of 1.5m. Rotate itself by rotating the driving device (8), and the rotating speed is 3r/min. 6. A drum-type cotton stalk continuous carbonization system according to claim 1, characterized in that: the combustible gas recovery and purification device (10) consists of a tar separator (11), a cooling separator (12), an intermediate It is composed of a purifier (13), and the combustible gas recovery and purification device (10) is connected with the heating furnace (7). 7. A drum type cotton stalk continuous carbonization system according to claim 1, characterized in that: said rod making machine (15) adds the cotton stalk charcoal powder discharged after the water-cooled discharger (14) cools down Binder, compression molded into cotton stalk carbon rods.