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Process of preparing rich acetone alcohol biological oil by biomass microwave catalytic pyrolysis

A microwave catalysis and biomass technology, which is applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, organic chemistry, etc., can solve the problems of high raw material cost, expensive catalyst, low acetol content, etc., achieve shortened reaction time, cheap and easy catalyst The effect of high selectivity generation

Inactive Publication Date: 2007-07-18
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In order to avoid the problems in the above-mentioned prior art, the present invention provides a method for preparing acetol-rich bio-oil by microwave catalytic cracking of biomass, so as to overcome the problems of high raw material cost, expensive catalyst and low content of acetol in the prior art. question

Method used

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  • Process of preparing rich acetone alcohol biological oil by biomass microwave catalytic pyrolysis

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Effect test

Embodiment 1

[0030] Using pine sawdust as raw material, it is crushed to a particle size of less than 1 mm, and the method of the present invention is used for raw material preparation, charging, air exhausting and microwave cracking. The cracking time is 12 minutes, and the liquid product is collected. The yield of the liquid product was 22.0%, the content of acetol was 45.3%, and the water content was 28.2%.

Embodiment 2

[0032] Using cotton stalk sawdust as raw material, the same steps as in Example 1 were used to collect the liquid product. The yield of the liquid product was 15.8%, the acetol content was 49.9%, and the water content was 30.3%.

Embodiment 3

[0034] Using Chinese fir sawdust as raw material, adopt the same steps as in Example 1 to collect the liquid product. The yield of the liquid product was 24.7%, the content of acetol was 45.4%, and the water content was 29.6%.

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Abstract

The microwave catalytic biomass cracking process for preparing biological oil with rich acetone alcohol features using sodium carbonate as catalyst, silicon carbide as microwave absorbing medium, microwave source as heat source for cracking biomass, and ice water mixture for cooling volatile component to obtain biological oil with rich acetone alcohol. By means of the unique temperature effect of microwave in biomass particle and the unique catalyzing effect of sodium carbonate in cracking biomass, the present invention realizes the creation of acetone alcohol in high selectivity. The present invention can obtain liquid product with acetone alcohol content of 30-55 % and raise the utilization value of acetone alcohol greatly. The present invention uses cheap and facile material and catalyst and has greatly shortened reaction period.

Description

technical field [0001] The invention relates to a method for preparing organic chemical raw materials, that is, a method for preparing acetol-rich bio-oil from biomass. Background technique [0002] At present, energy and environmental issues have become the focus of global attention, and fossil fuel resources still play the role of the world's energy pillar and the source of bulk organic chemical products. While benefiting mankind, fossil fuels have also caused serious pollution to the environment on which human beings depend. Moreover, fossil fuels will be exhausted in the near future, and it is imperative to seek alternative resources. Biomass, as the only renewable energy that can be converted into liquid fuel, has become a global consensus to expand and optimize its utilization. The liquid fuel converted from biomass cracking, usually called bio-oil, basically does not contain sulfur, nitrogen and metal components, and has no pollution to the environment. In addition ...

Claims

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Application Information

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IPC IPC(8): C10G1/00C07C49/17
Inventor 陈明强王君陈明功闵凡飞张明旭黄国胜邵群张学才
Owner ANHUI UNIV OF SCI & TECH
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