Preparation method for light-aromatic-rich bio-oil

A technology of light aromatics and bio-oil, which is applied in the preparation of liquid hydrocarbon mixtures and the petroleum industry, etc., can solve the problems of affecting the service life of the catalyst, the easy deactivation of the catalyst, and the irreversible deactivation of the catalyst, so as to achieve easy separation and low component content The effect of high and low water content

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

[0005] The biggest problem of using biomass catalytic pyrolysis or liquefaction method is that the catalyst is easy to deactivate. Although the temporary deactivation caused by carbon deposition can be solved by the cyclic regeneration of the catalyst, the irreversible deactivation of the catalyst caused by hydrothermal deactivation, will seriously affect the service life of the catalyst

Method used

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  • Preparation method for light-aromatic-rich bio-oil
  • Preparation method for light-aromatic-rich bio-oil

Examples

Experimental program
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Effect test

Embodiment 1

[0030] First weigh a certain amount of silica sol and add water to dilute to 5% aqueous sol solution, then add а-Al to the silica sol solution 2 o 3 Powder (diameter less than 1μm), ZrO 2Powder (diameter less than 0.5 μm), then add appropriate amount of ethanol, put it into a ball mill for wet grinding. After wet milling for 24 hours, dry it. The powder passed through a 60-mesh sieve is calcined at 600°C for 2 hours, and then shaped as required. The molded body was sintered at 1200°C for 2 hours in the atmosphere, and then slowly cooled to room temperature with the furnace temperature. Two kinds of microwave additives TC-1 and TC-2 were prepared according to the different proportions of raw materials, and the composition of TC-1 was 65% Al 2 o 3 , 35%SiO2 2 , 5%ZrO 2 , TC-2 composition is 85%Al 2 o 3 , 10%SiO2 2 , 5%ZrO 2 .

Embodiment 2

[0032] Mix 100g wood chips (5mm) with TC-1 according to the mass ratio of 1:0.1 and send them into the microwave cracking reactor. First, the biomass was preheated at 120°C for 30 minutes, and the power density was 1×10 5 W / m 3 , then heat up to 450°C for 4 minutes, and then heat up to 610°C until no gas is generated. The power density of the entire pyrolysis process is 4×10 5 W / m 3 . The gasification products formed by pyrolysis were condensed to obtain a total of 52.4g of bio-oil, and the yield of light aromatics was 5.2% (relative to the dry basis of biomass).

Embodiment 3

[0034] Mix 100g wood chips (5mm) with TC-2 according to the mass ratio of 1:1 and send them into the microwave cracking reactor. First, the biomass was preheated at 220°C for 5 minutes, and the power density was 3×10 5 W / m 3 , then heat up to 350°C for 9 minutes, and then heat up to 680°C until no gas is generated. The power density of the whole pyrolysis process is 10×10 5 W / m 3 . The gasification products formed by pyrolysis were condensed to obtain a total of 56.6 g of bio-oil, and the yield of light aromatics was 9.5% (relative to the dry basis of biomass).

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Abstract

The invention discloses a preparation method for light-aromatic-rich bio-oil. The preparation method comprises the following steps: uniformly mixing a biomass raw material and a microwave additive, performing microwave preheating treatment, then performing microwave pyrolysis, condensing generated pyrolyzed volatile components, and performing oil-water separation to obtain the light-aromatic-rich bio-oil. The target product prepared by the preparation method disclosed by the invention is high in yield, high in component content and low in moisture content; furthermore, the process is simple, a catalyst is not required to be added, and the product can be easily separated; the preparation method is suitable for industrial application.

Description

technical field [0001] The invention belongs to the field of biochemical industry, and in particular relates to a preparation method of bio-oil rich in light aromatic hydrocarbons. Background technique [0002] Light aromatics (BTXN) are a class of basic organic chemical raw materials, which are widely used in organic synthesis, polymer material preparation, and fuel processing. At present, BTXN mainly comes from petrochemical raw materials such as coal and petroleum, but these resources are increasingly facing the problem of total shortage, and a large amount of SO will be released during the processing. x and NO x Such polluting gases seriously affect the environment and do not meet the requirements for the development of green and low-carbon chemicals. Biomass is a renewable resource, and the development and utilization of some agricultural and forestry wastes to convert them into energy or chemical raw materials can not only alleviate the increasingly serious energy cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
CPCC10G1/002
Inventor 王鑫张全白富栋李政乔凯王领民
Owner CHINA PETROLEUM & CHEM CORP
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