Method of preparing biomass charcoal with biomass material and carbonization furnace

A technology of biomass materials and biochar, applied in the direction of biofuels, fixed carbonization furnaces, coke ovens, etc., can solve the problems of uncontrollable pyrolysis temperature, etc., and achieve the effects of compact structure, reduced pollution, and improved utilization rate

Inactive Publication Date: 2012-07-04
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to: aim at the actual application value and huge social demand of preparing biochar by anaerobic pyrolysis of biomass such as crop stalks, and the technical defect that the pyrolysis temperature cannot be controlled

Method used

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  • Method of preparing biomass charcoal with biomass material and carbonization furnace
  • Method of preparing biomass charcoal with biomass material and carbonization furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The carbonization furnace involved in the present invention includes a furnace body. The inner wall of the furnace body is covered with a high temperature resistant heat insulating material. Zone 6 and bucket-shaped unloading zone 13, wherein, the lower part of the carbonization chamber 1 is a bucket-shaped structure, and the center of the electric heating zone 6 is a straight-through channel for discharging, the lower edge of the bucket-shaped structure is connected with the upper edge of the straight-through channel for discharging, and the electric heating zone and The intersection of the carbonization chamber is provided with a mesh-shaped movable fire grate 7, the movable fire grate 7 can be switched on and off through the connecting rod, and the annular electric heating tube 11 is coiled around the discharge channel; the feeding port 3 is equipped with a sealing cover 4. The sealing cover is sealed with water, and the outlet of the bucket-shaped discharge area 13 i...

Embodiment 2

[0030] Corn stalks are used as the main raw material, and after being dried in the sun to remove residual soil impurities, they are chopped into pieces with a length of about 10cm. Fill the above-mentioned crushed corn stalks into the carbonization chamber 1 through the feed port of the carbonization furnace described in Example 1 (the same below), and compact them in layers until the entire carbonization chamber is filled (10 kg of corn stalks) , cover the sealing cover 4, the sealing baffle plate 8 of the outlet of the bucket-shaped discharge area 13, open the airflow adjustment device 2 at the top of the carbonization chamber 1, turn on the power controller, and adjust the temperature of the carbonization chamber 1 through the annular electric heating tube 11 After the temperature of the carbonization chamber reaches 90°C and keeps for 6 hours, adjust the carbonization chamber to 200°C and keep it warm for 2 hours for pre-carbonization. After the pre-carbonization is comple...

Embodiment 3

[0033] Rice straw is used as the main raw material, after being dried in the sun to remove residual soil impurities, it is chopped into fragments with a length of about 10cm. Fill the processed rice straw fragments into the carbonization chamber 1 from the carbonization furnace feed port, tamp them in layers, cover the sealing cover 4 until the entire carbonization chamber is filled (the rice straw fragments are 8 kg), and then cover the sealing cover 4. Close the sealing baffle 8 of the outlet of the bucket-shaped discharge area 13, open the airflow adjustment device 2 at the top of the carbonization chamber 1, turn on the power controller, and adjust the temperature in the carbonization chamber 1 to 90 through the annular electric heating tube 11. ℃, keep it for 6h, then adjust the carbonization chamber to 200℃, keep it warm for 2h for pre-carbonization. After the pre-carbonization is completed, the airflow regulating device 2 is closed, the carbonization temperature in the ...

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Abstract

The invention relates to a method of preparing biomass charcoals with natural materials, which comprises the following steps: collecting and putting the natural materials into a carbonization furnace after drying and removing impurities, covering the sealing cap, opening the airflow adjusting valve, and heating to remove residual moisture; continuously heating for pre-carbonization; after adjusting the temperature in the furnace to the carbonization temperature, closing the airflow adjusting valve, carrying out therrmolysis and carbonization in the airproof and oxygen-deficient environment, cooling the furnace to the temperature of 60 DEG C, and discharging the biomass charcoals from the discharging port. High temperature insulation materials are coated on the inner wall of the carbonization furnace body, and an oven, an electric heating zone and a funnel-shaped discharging zone are sequentially arranged on the furnace body from top to bottom, wherein the lower part of the oven is of a funnel shape, the center of the electric heating zone is provided with a material discharging straight channel, the lower edge of the funnel-shaped structure is communicated with the upper edge of the material discharging straight channel, a movable mesh grate is arranged at the junction, a circular electric heating tube is wound around the discharging channel; a sealing cap is arranged on the feeding port, and a sealing baffle is arranged on the discharging port of the funnel-shaped discharging zone.

Description

Technical field: [0001] The invention relates to a method for preparing biomass charcoal and a special carbonization furnace, in particular to a method for preparing biomass charcoal by using biomass materials through high-temperature anaerobic pyrolysis and a special temperature-controllable carbonization furnace. technical background: [0002] Biochar is a kind of pyrolysis of biomass under anaerobic or anoxic conditions at high temperature (generally <700°C) to remove the generated CO 2 A carbon-rich substance produced after flammable gases, volatile oils and tar-like substances. Since certain nutrients are concentrated and enriched during the anaerobic pyrolysis process of biomass, the content of P, K, Ca, and Mg in biochar is often higher than that of its preparation materials, and these elements are required for plant growth. Soil application of biochar has the effect of promoting crop growth and improving crop disease resistance. In addition, due to the absorptio...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B1/04
CPCY02E50/14Y02E50/10
Inventor 余向阳王冬兰陈杰严海娟刘敏刘贤金
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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