Unlock instant, AI-driven research and patent intelligence for your innovation.

Aromatization to Aromatics Process

A technology for aromatization and aromatic hydrocarbons, applied in chemical instruments and methods, organic chemistry, hydrocarbons, etc.

Active Publication Date: 2019-06-11
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the conversion of levulinic acid is mainly concentrated in the conversion to fine chemicals such as alcohols and esters, and there are few reports on the conversion of levulinic acid to aromatics such as benzene, toluene, and xylene.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aromatization to Aromatics Process
  • Aromatization to Aromatics Process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 50 grams of bagasse, place in an autoclave and add 500 grams of water, then add a 5mol / L hydrochloric acid solution with 5% water mass, heat up to 180°C and react for 1 hour, then cool, and the cooled reaction Liquid filtration, obtain filter cake and filtrate, and filtrate is the hydrolyzate of cellulose, and after reaction finishes, adopts mass spectrometry to identify reaction result and main product is levulinic acid, and its production amount is 16 grams.

[0024] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, loaded into a fixed bed reactor. The reaction substrate is levulinic acid Weight airspeed 0.3 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 chromatography. The reaction substrate conversion r...

Embodiment 2

[0026] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, loaded into a fixed bed reactor. The reaction substrate is acetoacetic acid Weight Airspeed 1.0 Hours -1 , hydrogen pressure 2.0MPa, flow rate 20ml min -1 , temperature 420°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 conversion rate of the reaction substrate was 91%, and the selectivity of BTX was 92%.

Embodiment 3

[0028] Weigh 5 grams of WO that has been dried at 120°C to remove water for 12 hours 3 / ZrO 2 Catalyst, loaded into a fixed bed reactor. The reaction substrate is levulinic acid Weight Airspeed 3.0 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 conversion rate of the reaction substrate was 86%, and the selectivity of BTX was 86%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for preparing aromatic hydrocarbon through aromatization. The method is characterized in that a raw material is in contact with a catalyst to generate aromatic hydrocarbon flow containing benzene, toluene and xylene, wherein the raw material has a structural formula (I) shown in the description, R1 in the formula (I) is an optionally substituted C1-8 linear or branched alkyl group, R2 in the formula (I) is hydrogen or an optionally substituted C1-10 linear or branched alkyl group, and n in the formula (I) is a positive integer; the catalyst is selected from a composite zirconium oxide XaOb / ZrO2, X is at least one selected from tungsten and molybdenum, and a and b are stoichiometric numbers; and the composite zirconium oxide comprises, by weight, 0.1-40 parts of XaOb and 60-99.9 parts of ZrO2. 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 an aromatization method for producing aromatic hydrocarbons, in particular to a method for aromatizing light aromatic hydrocarbons from benzene, toluene and xylene. Background technique [0002] Aromatic products are widely used in many fields such as polyester, chemical fiber, rubber, medicine, and fine chemicals. The domestic consumption is considerable, which has an important impact on the development of the national economy. At the same time, it is an important basic organic chemical raw material for social development. Benzene, toluene, and xylene are three aromatic bulk chemicals widely used in aromatic hydrocarbons. 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) interme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/04C07C15/06C07C15/08C07C1/207
Inventor 宋奇郑均林孔德金徐旋
Owner CHINA PETROLEUM & CHEM CORP