Process for hydrogenating modifying faulty gasoline

A hydrogenation and upgrading technology for low-quality gasoline, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment. It can solve the problems of poor desulfurization function, etc., and achieve the effects of stable operation, sufficient heat utilization, and simple process

Active Publication Date: 2005-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The desulfurization function of this process is poor, and it is not suitable for gasoline with high sulfur content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The raw material used in the present invention is full cut FCC gasoline, wherein the olefin content and sulfur content are≯50v%,≯1000μg / g. The olefin content of the produced oil is less than 20(v)%, the sulfur content is less than 200 μg / g, and the antiknock index (R+M) / 2 loss is less than 1.0 unit.

[0017] The raw materials used are listed in Table 1. The first reaction zone uses the commercial hydrorefining catalyst FH-98 produced by Wenzhou Huahua Group Company. The second reaction zone uses a selective hydrodesulfurization catalyst. The third reaction zone uses a gasoline upgrading catalyst.

[0018] project

FCC gasoline original

Material 1

FCC gasoline original

Material 2

FCC gasoline original

Material 3

Distillation range, ℃

35～191

34～183

35～182

Composition by fluorescence method / v%

saturated hydrocarbon

35.1

28.9

32.1

Olefin

41.3

52.9

56....

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PUM

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Abstract

The invention provides a process method for making hydrodesulfation and alkene reduction on the bad gasoline, like all-fractional FCC gasoline, etc. Under the conditions of hydrogen gas existence and temperature gradually rising, to contact with three catalysts forms three reaction regions. The first reaction region has lower temperature and uses hydrofining catalyst and mainly eliminates di-alkene in the gasoline; the second reaction region has higher temperature and uses selective hydrodesulfation catalyst and mainly eliminates organic sulfide and some alkenes; the third reaction region has the highest temperature, uses gasoline modifying catalyst and makes the modifying reactions including aromatization, isomerization and benzene alkylation, increasing octane number of gasoline and improving product quality. It has the advantages of simple flow, being easy to operate, fully using reaction heat, prolonging the operating cycle of catalyst, high liquid yield, low hydrogen consumption.

Description

technical field [0001] The invention relates to a method for upgrading low-quality gasoline, in particular to a method for hydrogenation and upgrading of low-quality gasoline such as full fraction FCC gasoline. Background technique [0002] Environmental protection regulations have continuously improved gasoline quality standards. The World Fuel Code II standard requires gasoline sulfur content ≯ 200μg / g from 2002. Some countries and enterprises have also formulated their fuel quality standards. For example, the gasoline quality standard of Sinopec Corporation Q / SHR007-2000 enterprise standard is sulfur content ≯ 200 μg / g, olefin + aromatic content ≯ 60v%, which requires olefin ≯ 30v%, benzene≯2.0v%. [0003] The FCC (fluid catalytic cracking) process is an important source of gasoline, but the content of sulfur and olefins in FCC gasoline is relatively high, which are 500μg / g-2000μg / g and 40v%-55v%, but the content of aromatics is low, only 10v %~25v%. Therefore, the key...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/06
Inventor 李扬刘继华赵乐平胡永康
Owner CHINA PETROLEUM & CHEM CORP
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