Process of preparing biofuel oil and fuel gas with half-dried biomass

A biofuel and biomass technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of low calorific value, complicated operation, high oxygen content, etc.

Inactive Publication Date: 2007-10-03
北京瑞增兰宇新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the complex operation, high reaction temperature conditions in the prior art, the need to feed a large amount of gasification medium or preheated gas

Method used

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  • Process of preparing biofuel oil and fuel gas with half-dried biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Mix 5g rice straw powder (0.5~0.8mm) with 1ml water evenly, compact it into a 10ml miniature airtight reactor, raise the temperature to 320□ at a heating rate of 25□ / min, keep it for 1 hour, collect the generated combustible gas, and end reaction. After the reaction is cooled, the dregs are distilled at atmospheric pressure, and the temperature is raised to 350□ to obtain biofuel liquid. The output of combustible gas accounts for 60% of the raw material, the output of bio-fuel is 15%, the calorific value is 41.26MJ / kg, and the oxygen content is less than 6%.

[0013] It can be seen from the accompanying drawings that the chromatographic peaks of the obtained biofuel substantially overlap with the chromatographic peaks of commercially available gasoline, diesel oil, and kerosene mixed samples. According to the results of mass spectrum peak analysis, the main components of the obtained biofuel are:

[0014] (1) Hydrocarbons mainly include: decane, undecane, dodecane, tr...

Embodiment 2

[0018] 5g of corn stalks were crushed into powder (1.0-1.5mm) and mixed with 4ml of water, compacted into a 10ml airtight reaction kettle, heated to 400°C at a heating rate of 10°C / min, kept for 1.5 hours, and collected gas to end the reaction. After the reaction is cooled, the dregs are distilled at atmospheric pressure, and the temperature is raised to 420°C to obtain biofuel liquid. The output of combustible gas accounts for 55% of the raw material, the output of bio-fuel is about 13%, the calorific value is 38.9MJ / kg, and the oxygen content is less than 6%.

Embodiment 3

[0020] Crush 5g of soybean straw into powder (10-15mm) and mix it with 3ml of water, compact it into a 10ml airtight reaction kettle, raise the temperature to 380°C at a heating rate of 40°C / min, keep it for 2 hours, and collect the generated combustible gas , to end the reaction. After the reaction is cooled, the dregs are distilled at atmospheric pressure, and the biofuel liquid is obtained when the temperature rises to 400°C. The output of combustible gas accounts for 65% of the raw material, the output of bio-fuel is about 18%, the calorific value is 39.8MJ / kg, and the oxygen content is less than 6%.

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Abstract

The present invention belongs to the field of comprehensive biomass utilizing technology, and is especially process of preparing biofuel oil and fuel gas with half-dried biomass. By means of half-drying process at relatively low temperature (300 600 deg.c), biomass is heat converted into biofuel oil and fuel gas without need of introducing gasifying medium and preheating gas. In the product, the obtained biofuel oil has heat value of 30-46 MJ/kg and oxygen content less than 6 %.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of biomass, in particular to a method for preparing biofuel and combustible gas from semi-dry biomass; using a semi-dry method to treat biomass (without additional gasification medium or preheating gas) at a relatively low temperature conditions) for thermal conversion, directly converting biomass into biofuel (gasoline, diesel, kerosene fractions) and combustible gas. Background technique [0002] Zhang Shuyu, Wang Shuyang, etc. disclosed in the article "Characteristics and Applications of Biofuels" in "Forestry Machinery and Woodworking Equipment" (Volume 33, No. 6, 2005) that biofuels were prepared by rapid pyrolysis of biomass. Biofuel "moisture content (water content) is 15-30%, calorific value is 16-19MJ / kg." In addition, Wang Shurong et al. in "Acta Solaris Sinica" (Volume 23, No. 1, 2002) "Biomass flash The bio-oil obtained by thermal cracking technology was disclosed in...

Claims

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Application Information

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IPC IPC(8): C10G1/00
Inventor 杨正宇王超都占魁李金花
Owner 北京瑞增兰宇新能源科技有限公司
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