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Production method of aromatic hydrocarbons

A production method and technology of aromatics, applied in the direction of producing hydrocarbons from oxygen-containing organic compounds, organic chemistry, etc., to achieve good conversion rate, solve the effect of long reaction steps and good selectivity

Active Publication Date: 2017-01-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned technical routes have their own characteristics and emphases, and there are also problems of varying degrees, such as the utilization rate of raw materials, the price of raw materials, the stability of the aromatization system, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, the share ratio of metal oxide is 3 / 97, charged into the fixed bed reactor. The reaction substrate is furfural Weight airspeed 0.5 hours -1 , hydrogen pressure 1.0MPa, flow rate 20ml min -1 , temperature 400°C. After the reaction, the qualitative analysis of the reaction results was carried out by mass spectrometry, and the quantitative analysis of the reaction results was carried out by chromatography. The reaction substrate conversion rate is 75%, and the selectivity of BTX is 89%.

Embodiment 2

[0030] Weigh 60 grams of corn stalks, place in an autoclave and add 700 grams of water, then add a 5mol / L sulfuric acid solution with 7% water quality, heat up to 180°C and react for 45 minutes, then cool, and the cooled reaction solution Filtrate to obtain filter cake and filtrate, the filtrate is the hydrolyzate of cellulose, after the reaction, the mass spectrometry is used to identify the reaction result. The main product is levulinic acid, and its production amount is 18 grams.

[0031] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, the share ratio of metal oxide is 5 / 95, charged into the fixed bed reactor. The reaction substrate is levulinic acid Weight Airspeed 1.0 Hours -1 , hydrogen pressure 1.0MPa, flow 50ml min -1 , temperature 450°C. After the reaction, the qualitative analysis of the reaction results was carried out by mass spectrometry, and the quantitative analysis of the reaction results was carried out by...

Embodiment 3

[0033] Weigh 60 grams of rice straw, place in an autoclave and add 700 grams of water, then add a 5mol / L sulfuric acid solution with 7% water quality, heat up to 210°C and react for 30 minutes, then cool, and the cooled reaction solution Filtrate to obtain filter cake and filtrate, the filtrate is the hydrolyzate of cellulose, after the reaction, the mass spectrometry is used to identify the reaction result. The main product is levulinic acid, and its production amount is 22.8 grams.

[0034] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 The catalyst, the share ratio of metal oxide is 20 / 80, is loaded into the fixed bed reactor. The reaction substrate is levulinic acid Weight Airspeed 2.5 hours -1 , hydrogen pressure 2.0MPa, flow rate 20ml min -1 , temperature 380°C. After the reaction, the qualitative analysis of the reaction results was carried out by mass spectrometry, and the quantitative analysis of the reaction results was c...

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PUM

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Abstract

The invention relates to a production method of aromatic hydrocarbons. The method is characterized in that a raw material is in contact with a composite zirconium oxide catalyst under aromatization conditions to generate aromatic hydrocarbon flow containing benzene, toluene and xylene, and the raw material has structural formula (I) shown in the description; in the formula (I), R1 is hydrogen, an optionally substituted C1-20 linear or branched alkyl group, an optionally substituted C2-C20 linear or branched alkenyl group, an optionally substituted C2-20 linear or branched alkynyl group, an optionally substituted C3-C20 cycloalkyl group or an optionally substituted C6-20 aryl group, R2 is an optionally substituted C1-20 linear or branched carboxyl group, a furyl group or a hydroxyalkylfuryl group, and the hydroxyalkylfuryl group has structural formula (II) shown in the description; and in the formula (II), R3 is an optionally substituted C1-20 linear or branched alkyl group, an optionally substituted C2-C20 linear or branched alkenyl group, an optionally substituted C2-20 linear or branched alkynyl group. The method can be used in the field of production of aromatic hydrocarbons from non-fossil resources.

Description

technical field [0001] The invention relates to a production method of aromatic hydrocarbons, in particular to a method for preparing light aromatic hydrocarbons of benzene, toluene and xylene. Background technique [0002] Benzene, toluene and xylene are important basic organic chemical raw materials for social development. They can be derived from a variety of product chains by themselves or through reproduction. The products are widely used in many fields such as polyester, chemical fiber, rubber, medicine and fine chemicals. The consumption reaches tens of millions of tons, which has an important impact on the development of the national economy. Benzene is a versatile basic petrochemical raw material that can be used to produce numerous products derived from it, including ethylbenzene / styrene, cumene / phenol, and more. Paraxylene is mainly used in the manufacture of terephthalic acid, via terephthalic acid (PTA) or diethyl terephthalate (DMT) intermediates, for the prod...

Claims

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Application Information

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IPC IPC(8): C07C15/04C07C15/06C07C15/08C07C1/20
Inventor 孔德金郑均林宋奇徐旋
Owner CHINA PETROLEUM & CHEM CORP
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