Method for preparing biological oil-based syngas by utilizing biological oil produced by thermal cracking of agricultural and forestry wastes to gasify

An agricultural and forestry waste, thermal cracking technology, applied in the petroleum industry, the manufacture of combustible gas, the production of bulk chemicals, etc., can solve problems such as pollution and waste of resources, reduce CO2 content, improve yield and quality, and solve coking technology puzzle effect

Active Publication Date: 2015-04-08
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most waste engine oil is used as fuel after recycling, which not only causes a waste of resources, but also causes very serious pollution in the natural environment after burning due to the heavy metal compounds contained in it.

Method used

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  • Method for preparing biological oil-based syngas by utilizing biological oil produced by thermal cracking of agricultural and forestry wastes to gasify
  • Method for preparing biological oil-based syngas by utilizing biological oil produced by thermal cracking of agricultural and forestry wastes to gasify
  • Method for preparing biological oil-based syngas by utilizing biological oil produced by thermal cracking of agricultural and forestry wastes to gasify

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Preparation of Syngas by Mixed Gasification of Bio-oil and Waste Engine Oil

[0027] use figure 1 In the process flow shown, the dehydrated waste engine oil (H 2 (0≤0.5wt%), slowly add 8wt% Tween 60 and 4wt% mixture of Span 60 and Span 80, add 40wt% water at the same time, emulsify at 80°C for 5min to obtain emulsified waste engine oil. Bio-oil obtained from rapid pyrolysis of waste corn stalks (refer to the literature for its preparation [Zhu Xifeng, Guo Tao, Lu Qiang, Guo Qingxiang. Experiments on atomization combustion characteristics of bio-oil, Journal of University of Science and Technology of China, 2005, 35(6): 856-860 ] published preparation method) and emulsified waste engine oil as raw materials for gasification, its physical parameters and elemental composition are shown in Table 1.

[0028] Table 1 Physical parameters and elemental composition of bio-oil and emulsified waste engine oil

[0029]

[0030] Add 20wt% and 30wt% of water to the b...

Embodiment 2

[0036] Example 2 Preparation of Syngas by Mixed Gasification of Bio-oil and Waste Diesel Oil

[0037] use figure 1 The process flow shown, under the action of strong stirring, waste diesel oil (H 2 (0≤0.1wt%), slowly add 1wt% Tween 80 and 1wt% Span 80, and add 10wt% water at the same time, and emulsify at 10°C for 60 minutes to prepare emulsified waste diesel oil. Bio-oil obtained from rapid pyrolysis of waste rice husks (refer to the literature for its preparation [Zhu Xifeng, Guo Tao, Lu Qiang, Guo Qingxiang. Experiments on atomization combustion characteristics of bio-oil, Journal of University of Science and Technology of China, 2005, 35(6): 856-860 ] published preparation method) and emulsified waste diesel oil as gasification raw materials, its physical parameters and elemental composition are shown in Table 4.

[0038] Table 4 Physical parameters and elemental composition of bio-oil and emulsified waste diesel

[0039]

[0040]

[0041] Add 10wt% and 40wt% wate...

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Abstract

The invention discloses a method for preparing biological oil-based syngas by utilizing biological oil produced by thermal cracking of agricultural and forestry wastes to gasify. The biological oil produced by thermal cracking of the agricultural and forestry wastes is taken as a raw material, the raw material is extensive in source and low in cost, the use of a catalyst is not required in gasification process, the pretreatment of the biological oil and water is not required, the gasification can be realized under the action of normal pressure and a conventional gasifying agent, the problem that the catalyst is easy to coke and inactivate is avoided, and the raw material cost and the equipment cost are reduced. The gasification raw material composition is changed by introducing the proper amount of waste hydrocarbon type liquid fuel into the biological oil, the technical difficult problem of coking in a biological oil gasification process is solved, the yield and the quality of the syngas are further improved, a new concept is provided for reforming of the syngas, a new method is created for preparing high-grade chemical products by taking waste biomass as raw material, and a new way is simultaneously provided for recycling of the waste hydrocarbon type liquid fuel.

Description

Technical field: [0001] The invention relates to a method for preparing syngas by using biomass, in particular to a method for preparing bio-oil-based syngas by gasifying bio-oil produced by pyrolysis of agricultural and forestry waste. Background technique: [0002] Syngas is an important basic chemical raw material, rich in H 2 , CO and a small amount of CO 2 , it can be used as an intermediate for refining or synthesizing various high-quality liquid fuels and chemicals, such as hydrogen, methanol, low-carbon alcohols, dimethyl ether and various Fischer-Tropsch fuels, etc. After years of development, the synthesis gas preparation technology using natural gas and coal as raw materials has become very mature, and the production technologies of synthetic ammonia, oxygen-containing compounds, hydrocarbons and carbon-chemicals using synthesis gas as raw materials have all been put into commercial operation. However, the production investment and cost of producing syngas from ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/00C10J3/72
CPCY02P20/52
Inventor 陈新德郭海军彭芬陈雪芳张海荣熊莲陈勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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