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a biochar fuel

A technology of biomass charcoal and biomass raw materials, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of low energy density, high carbonization temperature, and low energy yield of activated carbon materials, achieve good hydrophobicity, Effect of increased heat and fixed carbon content, excellent combustion performance

Active Publication Date: 2019-01-25
河南博顿生物科技有限公司 +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned method for carbonizing rice husks has realized the temperature-controlled continuous carbonization of rice husks on a production scale, but its carbonization temperature is too high, and the resulting products are activated carbonized rice husks, light wood tar and combustible gas; the energy density of activated carbon materials is low , low energy yield, cannot be used as fuel

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The biomass charcoal fuel of the present embodiment adopts the above-mentioned biomass continuous pyrolysis carbonization device, which is prepared by the following method:

[0040] Introduce nitrogen into the carbonization furnace to make the furnace an anaerobic or low oxygen environment (oxygen volume percentage is less than 10%), feed corn stalk raw material particles from the top of the carbonization furnace, and rely on its own gravity to flow downward; The air flow enters from the bottom of the carbonization furnace, rises from the bottom to the top, and forms a countercurrent reaction area in the furnace; the reaction temperature at the bottom of the carbonization furnace is controlled by hot air flow to 220°C, the pressure in the furnace is 1050mbar, and the residence time of the material in the furnace is 5h , The biomass charcoal fuel generated by the reaction is output from the bottom of the carbonization furnace, and the combustible gas generated in the furn...

experiment example 1

[0048] In this experimental example, the biochar fuel obtained in Examples 1-8 is counted and detected.

[0049] The detection methods and instruments used are as follows:

[0050] Thermogravimetry and combustion characteristics analysis: STA449F3 synchronous thermal analyzer (Thermogravimetric Analyzer) from NETZSCH Instrument Company of Germany was used.

[0051] Determination of calorific value: using a calorimeter (Zhengzhou Hengya Instrument Co., Ltd., HY-A9) and an electronic balance (Shenzhen Infinity Weighing Instrument Co., Ltd., MAX-A6002).

[0052] Mass yield and energy yield: mass yield η m and energy yield η e The calculation formula of is as follows,

[0053]

[0054]

[0055] In the formula: m 1 and Q 1 Indicates raw material quality and low calorific value, m 2 and Q 2 Indicates the quality of biomass charcoal fuel and low calorific value.

[0056] The results are shown in Table 2. Wherein, the raw material is corn stalk raw material particles. ...

experiment example 2

[0062] In this experimental example, the combustion performance of the biomass charcoal fuel obtained in the embodiment is tested.

[0063] The detection methods and instruments used are as follows:

[0064] Thermogravimetry and combustion characteristics analysis: STA449F3 synchronous thermal analyzer (Thermogravimetric Analyzer) from NETZSCH Instrument Company of Germany was used.

[0065] Industrial analysis: use a muffle furnace (Shanghai Kailang Instrument Equipment Factory, SX2-4-10) and a drying oven (Wujiang Minxin Oven Electric Furnace Manufacturing Co., Ltd., MX841-6).

[0066] Elemental analysis: vario EL III elemental analyzer from Elementar Company, Germany.

[0067] The results are shown in Table 3.

[0068] The combustion performance testing result of the obtained biomass charcoal fuel of the embodiment of table 3

[0069]

[0070]

[0071] As can be seen from Table 3, the ignition temperature of the biomass charcoal fuel obtained in Examples 1-8 is low...

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Abstract

The invention relates to a biomass charcoal fuel, and belongs to the technical field of biomass fuels. The biomass charcoal fuel is prepared by the following step: leading nitrogen into a carbonization furnace, enabling the inside of the furnace to be an anaerobic or low-oxygen environment, feeding biomass material particles from the top of the carbonization furnace, enabling hot airflow to enter the carbonization furnace from the bottom of the carbonization furnace, and forming a reverse flow reaction area in the furnace; controlling the reaction temperature of the bottom of the carbonization furnace to be 200-280 DEG C, controlling pressure in the furnace to be 1010-1200mbar, and performing reaction at the bottom of the carbonization furnace to generate the biomass charcoal fuel. The biomass charcoal fuel is prepared by low-temperature carbonization technology, has high energy density, calorific value and fixed carbon content, excellent combustion performance and good hydrophobic property, and is more resistant to burning, ignition temperature is 250-300 DEG C, and comprehensive combustion performance index is 1*107-4*107.

Description

technical field [0001] The invention belongs to the technical field of biomass fuel, and in particular relates to a biomass charcoal fuel. Background technique [0002] my country is a country with a large output of straw, and the pollution of crop straw has always been the bottleneck of agricultural development. According to the biomass conversion pathway, current biomass energy utilization technologies include physical conversion, biological conversion and chemical conversion. Physical transformation mainly includes physical compression and briquetting treatment to prepare biomass solid briquette fuel; biological transformation mainly includes anaerobic digestion to produce biogas and fermentation to produce ethanol; chemical transformation includes liquefaction, gasification, carbonization, etc., which are currently the focus of research at home and abroad , mainly focused on the research of biomass liquefaction and gasification, and there are few studies on the preparat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30
Inventor 张利亚薛蕾王留成侯朝濮石绍利刘大贵赵洁
Owner 河南博顿生物科技有限公司