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Method for production of C6-C8 arene from light cycle oil

A C6-C8, light cycle oil technology, applied in the field of C6-C8 aromatics production, can solve the problems of low aromatics yield and purity, long technical route, etc., and achieve the effect of high selectivity, short production route and low hydrogen consumption

Inactive Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to mainly solve the problem that the previous technical route is longer, C 6 -C 8 Aromatics yield and purity are low, providing a new light cycle oil production C 6 -C 8 Aromatic method

Method used

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  • Method for production of C6-C8 arene from light cycle oil
  • Method for production of C6-C8 arene from light cycle oil
  • Method for production of C6-C8 arene from light cycle oil

Examples

Experimental program
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Effect test

Embodiment 1

[0027] After mixing light cycle oil with a boiling range of 150-380℃, supplementary hydrogen and hydrogen I, enter the hydrotreating reactor to remove sulfur and nitrogen impurity compounds, and hydrogenate the bicyclic and above fused-ring aromatic hydrocarbons, leaving only one aromatic Ring, Table 1 lists the catalysts and reaction conditions used. Table 2 lists the sulfur, nitrogen content, density, aromatic compound content, alkyl tetralin aromatic hydrocarbon content, and fraction distribution of light cycle oil and hydroprocessing products. The nitrogen content in the hydrotreated product is 5 ppm.

[0028] Table 1

[0029]

[0030] Table 2

[0031]

[0032]

[0033] The hydrotreating product is separated into gas and liquid by the stripper, and the gas phase absorbs H 2 S and NH 3 , Hydrogen I is recycled back to the hydrotreating reactor, and the hydrogen II and the still liquid of the stripper enter the hydrogenation ring opening and transalkylation reactor. Table 3 list...

Embodiment 2

[0042] After mixing light cycle oil with a boiling range of 150-380℃, supplementary hydrogen and hydrogen I, enter the hydrotreating reactor to remove sulfur and nitrogen impurity compounds, and hydrogenate the bicyclic and above fused-ring aromatic hydrocarbons, leaving only one aromatic Ring, Table 6 lists the catalysts and reaction conditions used. Table 2 lists the sulfur, nitrogen content, density, aromatic compound content, alkyl tetralin aromatic hydrocarbon content, and fraction distribution of light cycle oil and hydroprocessing products. The nitrogen content in the hydrotreated product is 5 ppm.

[0043] Table 6

[0044]

[0045]

[0046] Table 7

[0047]

[0048] The hydrotreating product is separated into gas and liquid by the stripper, and the gas phase absorbs H 2 S and NH 3 , Hydrogen I is recycled back to the hydrotreating reactor, and the hydrogen II and the still liquid of the stripper enter the hydrogenation ring opening and transalkylation reactor. Table 8 list...

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Abstract

The invention relates to a method for production of C6-C8 arene from light cycle oil, and mainly solves the problems of long route, low C6-C8 arene yield and low purity in previous technologies. According to the invention, by means of hydrotreatment, and hydrogenation ring opening and transalkylation two-step reaction, light cycle oil can be converted to C6-C8 arene. The technical scheme well solves the problems, and can be used for the field of production of monocyclic light aromatic hydrocarbons from distillate oil.

Description

Technical field [0001] The invention relates to a light cycle oil production C 6 -C 8 Aromatics method. Background technique [0002] Benzene and p-xylene (PX) are important basic organic chemical raw materials, which are widely used in the production of polyester, chemical fiber and other products. They are closely related to the development of the national economy and people's food, clothing, housing and transportation. In recent years, the demand has been strong and the increase has been rapid. There are mainly two process routes for the sources of aromatics raw materials: one raw material route is the catalytic reforming of naphtha and aromatics extraction to obtain aromatic raw materials; the other raw material route is the by-product of the ethylene plant-ethylene pyrolysis gasoline through hydrogenation and aromatic extraction. Extraction of aromatic hydrocarbon raw materials, thereby converting low value-added raw materials into high value-added aromatic hydrocarbon produ...

Claims

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Application Information

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IPC IPC(8): C07C5/29C07C5/13C07C15/04C07C15/08
CPCC07C5/29C07C5/10C07C5/11C07C5/13C07C15/04C07C15/08C07C15/02C07C13/48
Inventor 孔德金李旭光郑均林侯敏
Owner CHINA PETROLEUM & CHEM CORP
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