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Process for the production of aromatics

A production method and technology for aromatic hydrocarbons, which are used in the production of hydrocarbons from oxygen-containing organic compounds, organic chemistry, etc., to achieve good technical effects, good selectivity, and the effect of solving long reaction steps.

Active Publication Date: 2019-05-14
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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  • Process for the production of aromatics
  • Process for the production of aromatics
  • Process for the production of aromatics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 5 grams of WO which has been dried at 120℃ for 12 hours to remove water 3 / ZrO 2 The proportion of the catalyst and the metal oxide is 3 / 97, which is charged into the fixed bed reactor. Furfural Weight airspeed 0.5 hour -1 , Hydrogen pressure 1.0MPa, flow rate 20ml min -1 , The temperature is 400℃. After the reaction, mass spectrometry is used for qualitative analysis of the reaction results, and chromatography is used for quantitative analysis of the reaction results. The conversion rate of the reaction substrate was 75%, and the selectivity of BTX was 89%.

Embodiment 2

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

[0031] Weigh 5 grams of WO which has been dried at 120℃ for 12 hours to remove water 3 / ZrO 2 The proportion of the catalyst and the metal oxide is 5 / 95, which is charged into the fixed bed reactor. Levulinic acid Weight airspeed 1.0 hour -1 , Hydrogen pressure 1.0MPa, flow rate 50ml min -1 , The temperature is 450°C. After the reaction, mass spectrometry is used for qualitative analysis of the reaction results, and chromatography is used for quantitative analysis of the reaction results. The...

Embodiment 3

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

[0034] Weigh 5 grams of WO which has been dried at 120℃ for 12 hours to remove water 3 / ZrO 2 The proportion of the catalyst and the metal oxide is 20 / 80, which is charged into the fixed bed reactor. Levulinic acid Weight airspeed 2.5 hours -1 , Hydrogen pressure 2.0MPa, flow rate 20ml min -1 , The temperature is 380℃. After the reaction, mass spectrometry is used for qualitative analysis of the reaction results, and chromatography is used for quantitative analysis of the reaction results. Th...

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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 method for producing aromatic hydrocarbons, in particular to a method for preparing benzene, toluene and xylene light aromatic hydrocarbons. Background technique [0002] Benzene, toluene, and xylene are important basic organic chemical raw materials for social development. It can derive a variety of product chains by itself or through reproduction. The products are widely used in many fields such as polyester, chemical fiber, rubber, medicine, and fine chemicals. The consumption has reached tens of millions of tons, which has an important impact on the development of the national economy. Benzene is a multi-purpose basic petrochemical raw material that can produce many products derived from it, including ethylbenzene / styrene, cumene / phenol and so on. Paraxylene is mainly used to produce terephthalic acid, through terephthalic acid (PTA) or diethyl terephthalate (DMT) intermediates, used to produce polyester fibers such as polyet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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