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Biochar preparation method

A biochar, biomass technology, applied in the fields of biofuels, chemical instruments and methods, waste fuels, etc., can solve the problems of low conversion rate, environmental pollution, waste of energy, etc., to suppress side reactions, improve coal conversion rate, raw materials Rich and cheap effects

Active Publication Date: 2018-11-23
安徽省蓝天能源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of biomass carbonization, some tar and combustible gas (CO, CH 4 etc.), using traditional baking technology, the conversion rate of biomass into biochar is 30%-40%, low conversion rate not only wastes energy, but also causes greater environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Ingredients: Put the pre-broken corn stalks or granules into the reactor;

[0035] Carbonization conversion: heat the reactor, and when the temperature rises to 220°C, put 1% carboxylic acid of biomass mass and 1% calcium salt of biomass mass into the reactor to solid-solution carbonize the biomass;

[0036] Cooling: After the carbonization conversion is completed, cool down to below 40°C to obtain biochar.

Embodiment 2

[0038] Ingredients: Put the pre-broken rice husk or granules into the reactor;

[0039] Carbonization conversion: Heating the reactor, and when the temperature rises to 300°C, put 5% of the biomass mass of carboxyl groups and 10% of the biomass mass of transition metal salts into the reactor to perform solid solution carbonization of the biomass;

[0040] Cooling: After the carbonization conversion is completed, cool down to below 40°C to obtain biochar.

Embodiment 3

[0042] Ingredients: put pre-broken wood chips or granules into the reactor;

[0043] Carbonization conversion: Heating the reactor, and when the temperature rises to 350°C, put 3% carbonyl of biomass mass and Y-type molecular sieve with 5% biomass mass into the reactor to carry out solid solution carbonization of biomass;

[0044] Cooling: After the carbonization conversion is completed, cool down to below 40°C to obtain biochar.

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Abstract

The invention provides a biochar preparation method which comprises the following steps: material preparation: adding biomass which is previously broken into a reaction kettle; carbonization conversion: heating the reaction kettle, adding an active group containing activating agent with the biomass mass as 1 to 5% and a catalyst with biomass mass as 1 to 10% in the reaction kettle when the reaction kettle rises to certain temperature and pressure and performing solid-solution carbonization on the biomass; cooling: cooling to 40 DEG C or lower after carbonization conversion to obtain biochar; putting the catalyst at first and then adding the activating agent. The raw materials utilized in the biochar preparation method are rich and cheap, farmland biomass waste is recycled, the active groupcontaining activating agent is added into biomass carbonization, side reaction can be effectively inhibited, and the activating agent is matched with the catalyst to perform solid-solution carbonization on the biomass; thus, a biochar conversion rate is improved, and a carbonizing technology has cleanness and environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of biomass fuel, in particular to a preparation method for biochar. Background technique [0002] With the growth of the demand for fossil fuels in the development of the national economy, the consumption of fossil fuel resources is accelerating at an alarming rate, the price continues to rise, and the use of coal will cause serious environmental pollution. Facing the intensified contradiction between the supply and demand of fossil fuel resources, environmental pollution and the pressure of national energy conservation and emission reduction, the development of new energy and renewable energy has become an inevitable trend. Biomass, as a renewable resource, produces almost no pollution during use, and at the same time plays an important role in protecting and improving the ecological environment. It is one of the ideal renewable energy sources and has unlimited potential for vigorous development and utiliza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10L5/44
CPCC10B53/02C10L5/447C10L9/06C10L2290/141C10L2290/06C10L2290/08C10B57/06C10L9/083C10B57/14Y02E50/10Y02E50/30B01J29/40
Inventor 邢献军
Owner 安徽省蓝天能源环保科技有限公司
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