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Device for smokeless carbonizing treatment on crop straws

A technology of crop straw and smokeless charcoal, which is applied in the fields of biofuels, special forms of dry distillation, petroleum industry, etc., can solve the problems of air pollution, large energy consumption, etc., and achieve the effects of increasing grain output, low cost, and low operating energy consumption.

Active Publication Date: 2015-06-03
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If measures to purify flue gas are not taken during the preparation of biochar, it will cause more serious air pollution
In addition, many devices currently used to prepare biochar use external heating, which consumes a lot of energy. If the heat released during the pyrolysis process of agricultural waste can be used to carbonize it, the energy consumption and energy consumption of biochar will also be greatly reduced. preparation cost

Method used

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  • Device for smokeless carbonizing treatment on crop straws
  • Device for smokeless carbonizing treatment on crop straws
  • Device for smokeless carbonizing treatment on crop straws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A device for smokeless carbonization of crop stalks, comprising two parts: a carbonization furnace and a purification device; the carbonization furnace includes a furnace cover 1 with an asbestos board 17 embedded with an insulating material, a furnace shell 4, and a carbonization chamber 5, Bottom plate 7, ash port 9, chimney 13, furnace door 14 and air inlet 15, and the lower part of carbonization chamber 5 is provided with furnace grate 6. The space between the shell 4 of the furnace body and the carbonization chamber 5 is filled with refractory bricks 16 of thermal insulation material. The air inlet 15 is located on the furnace body opposite the furnace door 14 and the ash port 9. The chimney 13 is arranged on both sides of the upper part of the carbonization furnace. The furnace cover 1 is rotatably connected with the furnace body shell 4 through a hinge 2, the furnace cover 1 is closed by a buckle 11 provided on the furnace body shell 4, the ash port 9 is located ...

Embodiment 2

[0034] Example 2 : Preparation of wheat straw charcoal

[0035] Adopt the device described in embodiment 1, open the furnace cover 1, load crop straws such as wheat straw, step on it while loading, and cover the furnace cover 1 tightly on the furnace body by buckle 11 after filling; The instrument 12 is inserted into the furnace body through the small hole in the center of the furnace cover; the furnace door 14 located at the lower part of the furnace body is opened, and the wheat straw is ignited; the furnace door 14 is closed, the axial flow AC fan and the magnetic drive circulation pump are turned on, and the wheat straw Slowly and evenly carbonize in the process, and the furnace is gradually cooled after the carbonization process is completed. After the stove is cooled to the ambient temperature, the furnace door 14 is opened, and the charcoal is discharged from the ash port 9 . When the stove is not in use, the stove can be moved to the warehouse by the handle 10 and t...

Embodiment 3

[0037] Example 3 : Preparation of Peanut Shell Charcoal

[0038] Adopt the device described in embodiment 1, open furnace cover, in furnace grate Lay a layer of straw or wheat straw on top, and then put the peanut shells from which the nuts have been peeled off into the carbonization chamber, fill it up, compact it, and cover the furnace cover tightly. Open the furnace door located at the lower part of the furnace body, ignite the straw or wheat straw, and then ignite the peanut shells; close the furnace door, turn on the axial flow AC fan and the magnetic drive circulation pump. After the carbonization furnace cools down to the ambient temperature, the carbonization process is completed. Open the furnace door and discharge the charcoal from the ash port. The ash content of environmental carbonization and ordinary carbonization products were 12.31% and 23.48%, respectively, and the quality of peanut shell biochar produced by environmental protection carbonization was also ...

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Abstract

The invention discloses a device for smokeless carbonizing treatment on crop straws. The device consists of a carbonization furnace and a purifying device, wherein the carbonization furnace comprises a furnace cover clamped and inserted with an insulating material asbestos board, a furnace body shell, a carbonization chamber, a bottom plate, an ash discharging port, a smoke pipe, a furnace door and a wind inlet; and the purifying device comprises a smoke tee, an axial flow AC blower, a PPR adapter, a spray header, a corrugated tube, a PPR tee, a control ball valve, a magnetic drive circulating pump, an outside ball valve, a stainless steel frame and a collecting barrel. The air pollution problem in the carbonization process is greatly solved, and plenty of generated PM2.5 and PM10 particulate matters are completely absorbed through a spraying and spiral purifying secondary system. The quality of the produced biomass charcoal is high. Because the input quantity of the oxygen in the whole carbonization process is low, the shortcoming of inaccurate oxygen quantity controlled by men is avoided; and except a small quantity of the ash contents are generated in the furnace mouth due to ignition, the other straws are uniformly carbonized and the biomass charcoal almost has no ash content.

Description

[0001] technical field [0002] The invention relates to the technical field of environmental protection carbonization of straws, in particular to a device for performing smokeless and environmental protection carbonization treatment on crop straws. Background technique [0003] my country is a large agricultural country, and a large amount of crop straw will be produced in agricultural production. Taking rice straw as an example, the national rice output in 2012 was about 201 million tons (China Agricultural Yearbook, 2012), and every kilogram of rice will be accompanied by 1-1.5kg Rice straw is produced (Karimi et al., 2006, Biomass and Bioenergy), so annual rice straw production is between 201-301 million tons. If the crop straws are returned to the field, on the one hand, the quantity is too large and unrealistic; more importantly, most of the organic matter returned to the field will be gradually decomposed by microorganisms, and release CH into the atmosphere 4 , N ...

Claims

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Application Information

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IPC IPC(8): C10B53/02
CPCC10B53/02C10B57/18Y02E50/10
Inventor 姜军徐仁扣李忠意袁金华刘源刘兆东许晨阳张海云
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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