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Biomass gasification-activation combination and preparation method of active porous carbon material

A biomass charcoal and biomass technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problem of high tar content, achieve the effects of prolonging the cracking time, increasing the calorific value, and increasing the content of combustible gas components

Active Publication Date: 2012-03-28
秦恒飞 +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a biomass gasification-activation furnace to solve the problem of high tar content in the biomass gasification product-combustible gas, and to use black water waste liquid and oxygen-containing gas as activators at the same time Activation reaction with biomass charcoal produces pure combustible gas and obtains activated carbon

Method used

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  • Biomass gasification-activation combination and preparation method of active porous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Using wood chips as the raw material, use the automatic feeding mechanism to feed the raw material into the feed port (2), turn on the homogenizer (4), level the material surface, start the exhaust fan (20), start to ignite, and wait until the temperature of the gasification layer reaches At 600°C, start the movable furnace sieve (8) and rotate the activation furnace (11) at the same time. Biomass charcoal, tar and vinegar liquid vapor enter the activation furnace through the inlet (10), and the generated combustible gas passes through the waste heat boiler (19). Enter the heat source supplementary chamber (15) to increase the temperature of the activation furnace, and the activated carbon is obtained from the outlet (17), so that the whole system is circulated first. When the temperature of the pyrolysis layer reaches 550°C, the temperature of the gasification layer reaches 800°C, and the temperature of the activation furnace reaches At 900°C, the system reaches the sta...

Embodiment 2

[0025] Using sawdust and shavings as raw materials, the temperature of the pyrolysis layer is controlled to be about 550°C, the temperature of the gasification layer is about 750°C, and the temperature of the activation furnace is about 900°C. The rest of the steps and methods are the same as in Example 1. The composition of the obtained combustible gas is: CO 2 9.8%, CO 23.2%, H 2 18.9%, CH 4 5.2%, the calorific value of gas is 7.4MJ / Nm 3 ;Tar content is 5mg / Nm 3 , the methylene blue adsorption value of activated carbon is 11-15ml / 0.1g, the iodine adsorption value is 800-1000mg / g, and the BET specific surface area is 1086 m 2 / g.

Embodiment 3

[0027] Using fruit tree branches as raw materials, the temperature of the pyrolysis layer is controlled to be about 600°C, the temperature of the gasification layer is about 850°C, and the temperature of the activation furnace is about 900°C. The rest of the steps and methods are the same as in Example 1. The composition of the obtained combustible gas is: CO 2 10.9%, CO 26.7%, H 2 20.3%, CH 4 3.9%, the calorific value of gas is 7.6MJ / Nm 3 ;Tar content is 9mg / Nm 3 , the methylene blue adsorption value of activated carbon is 10-13ml / 0.1g, the iodine adsorption value is 800-1000mg / g, and the BET specific surface area is 987 m 2 / g.

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Abstract

The invention belongs to the technical field of thermal conversion of biomass energy and specifically relates to a biomass gasification-activation combination for decoking and a preparation method of an active porous carbon material, in particular to a gasification-activation furnace which does not produce tar oil or black water waste liquor and the preparation method of the active porous carbon material. Compared with the traditional gasification process, no tar oil or black water waste liquor is produced, final products are combustible gas and active carbon, and the problems that black liquid exists in the traditional gasification technology for polluting a water source, the content of the tar oil in the combustible gas is high, the purification is difficult, a pipeline is blocked, a generator set can not operate normally continuously, the added value of a gasification product is low and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of thermal conversion of biomass energy, and specifically relates to a method for preparing biomass gasification-activation combined decoking and active porous materials. Background technique [0002] At present, the main equipment of biomass gasification technology includes fixed-bed gasifier and fluidized-bed gasifier. The structure of current gasification equipment, combustible gas purification technology, and structure of purification equipment have been exposed during the pilot test and engineering process. Problems have hindered the promotion of biomass gasification technology. There are three main problems: First, although the gasification equipment is diverse, the adaptability is not strong. Different gasifiers have different requirements for the type of raw material, the particle size of the raw material, and the moisture content of the raw material, and the engineering has not been truly realized. ...

Claims

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Application Information

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IPC IPC(8): C10J3/60C10J3/62C10J3/86C10J3/84C10J3/66C01B31/08C01B31/10C01B32/336
CPCY02P20/129
Inventor 秦恒飞阙明华
Owner 秦恒飞
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