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Method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization

A technology of corn stalks and biomass charcoal, which is applied in the fields of biofuel, special dry distillation, petroleum industry, etc., can solve the problems of not being able to be used as fuel, low energy density, high carbonization temperature, etc., so as to alleviate energy shortage and reduce production energy consumption , the effect of reducing consumption

Active Publication Date: 2017-01-11
河南博顿生物科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its carbonization temperature is too high, and the resulting product is an activated carbon material with low energy density, which cannot be used as a fuel, and the energy yield is low

Method used

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  • Method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization
  • Method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization
  • Method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The method for preparing biomass charcoal fuel by low-temperature carbonization of corn stalks in this embodiment adopts the above-mentioned biomass continuous pyrolysis carbonization device, specifically:

[0036] 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 biochar fuel generated by the reaction is output from the bottom of the carbonization furnace, and the combustible g...

experiment example 1

[0044] In this experimental example, statistics and tests were carried out on the biomass charcoal fuel obtained by the method of preparing biochar fuel by the low-temperature carbonization of corn stalks in Examples 1-5.

[0045] The detection methods and instruments used are as follows:

[0046] Thermogravimetry and combustion characteristics analysis: STA449F3 synchronous thermal analyzer (Thermogravimetric Analyzer) from NETZSCH Instrument Company of Germany was used.

[0047] 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).

[0048] Mass yield and energy yield: mass yield η m and energy yield η e The calculation formula of is as follows,

[0049] η m = m 2 m 1 × 100 % - - - ...

experiment example 2

[0058] In this experimental example, the combustion performance of the biomass charcoal fuel obtained in the embodiment is tested.

[0059] The detection methods and instruments used are as follows:

[0060] Thermogravimetry and combustion characteristics analysis: STA449F3 synchronous thermal analyzer (Thermogravimetric Analyzer) from NETZSCH Instrument Company of Germany was used.

[0061] 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).

[0062] Elemental analysis: vario EL III elemental analyzer from Elementar Company, Germany.

[0063] The results are shown in Table 3.

[0064] The combustion performance testing result of the obtained biomass charcoal fuel of the embodiment of table 3

[0065]

[0066]

[0067] It can be seen from Table 3 that the ignition temperature of the biomass charcoal fuel obtained in the embodiment ...

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Abstract

The invention relates to a method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization, and belongs to the technical field of biomass pyrolysis. The method comprises the following steps that after nitrogen gas is introduced into a carbonization furnace, oxygen-free or low-oxygen environment is formed in the furnace; corn stalk raw material particles are fed from the top of the carbonization furnace; a hot air flow enters the carbonization furnace from the bottom of the carbonization furnace to form a reverse flow reaction region in the furnace; the reaction temperature at the bottom of the carbonization furnace is controlled to be 200 to 280 DEG C; the pressure inside the furnace is 1010 to 1200 mbar; the biomass charcoal fuel generated through reaction is output from the bottom of the carbonization furnace. The method for preparing biomass charcoal fuel from corn stalks through low-temperature carbonization has the advantages that the heat utilization efficiency is high; the carbonization temperature is low; the energy consumption is reduced; the mass yield of the biomass charcoal fuel obtained after the carbonization is 70 percent to 85 percent; the energy source yield is 85 percent to 95 percent; the energy source yield is high; the energy density of the obtained biomass charcoal is high; the biomass charcoal can be used as the fuel; the product purpose is expanded; a novel path is provided for the recovery and the utilization of the corn stalks.

Description

technical field [0001] The invention belongs to the technical field of biomass pyrolysis, and in particular relates to a method for preparing biomass charcoal fuel by low-temperature carbonization of corn stalks. 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 biomas...

Claims

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Application Information

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IPC IPC(8): C10B53/02C10B49/06C10B57/00C10B57/14
CPCC10B49/06C10B53/02C10B57/00C10B57/14Y02E50/10
Inventor 张利亚王留成王孟晴马直辰翟国建赵文生王全义陈春生石绍利李伊光秦云峰师豪张晏铭赵怡
Owner 河南博顿生物科技有限公司
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