Self-alkylation reaction process of isomerized alkane

A technology of alkylation reaction and isoparaffin, applied in refined hydrocarbon oil, petroleum industry, etc., can solve the problems of environmental pollution and operation safety, and achieve the effect of high octane number and accurate feed amount

Inactive Publication Date: 2003-07-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] due to H 2 SO 4 And HF liquid strong acid has brought the problem of polluting the environment and operating safety to the alkylation process of the catalyst

Method used

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Experimental program
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specific Embodiment approach

[0014] In the method provided by the invention, said strong electronegative element is preferably a halogen, and said organic or inorganic compound containing strong electronegative element is preferably hydrogen halide or an inorganic compound that can be decomposed into hydrogen halide under alkylation conditions. or organic compounds. In general, all inorganic or organic compounds that can be decomposed into hydrogen halides under alkylation conditions can be used in the present invention, but preferred inorganic compounds are hydrogen halides such as HF, HCl, HBr and HI, more preferably HF or HCl; preferred organic compounds are halogen-containing organic compounds having 2 to 8 carbon atoms. The organic or inorganic compound containing strongly electronegative elements may also be a mixture of two or more of the above compounds.

[0015] The organic compound mentioned in the method provided by the present invention includes, but not limited to, mono- or dihalogenated alk...

Embodiment 1

[0029] The self-alkylation reaction of isobutane is carried out according to the method provided by the present invention.

[0030] Weigh 5.24g phosphotungstic acid (H 3 PW 12 o 40 .22H 2 O, analytically pure, produced by Beijing Chemical Plant) was dissolved in 35ml of deionized water and made into H 3 PW 12 o 40 aqueous solution. 18.5g particle size is 20-40 purpose silica gel (SiO 2 , produced by Qingdao Ocean Chemical Factory) into a suction filter bottle, treated at 0.095 MPa vacuum and 75°C for 1.0 hour, cooled to room temperature, and added the prepared H 3 PW 12 o 40 solution, impregnated for 1.0 h, and then vacuum-dried at 100 °C for 4 h to obtain 3 PW 12 o 40 And the supported heteropolyacid catalyst of 80% by weight silica gel, denoted as 20%H 3 PW 12 o 40 / SiO 2 , the specific surface of the catalyst is 380m 2 / g. The specific surface area of ​​the catalyst was determined by low-temperature nitrogen adsorption BET method. Acid strength H o <-13....

Embodiment 2

[0040] 2000ppm of HF was added to the isobutane from the alkylation reaction raw material shown in Example 1 as a reaction aid. The catalyst, reaction conditions and process for carrying out the self-alkylation reaction are the same as in Example 1, the reaction conditions are shown in Table 2, and the reaction results are listed in Table 2.

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Abstract

The self-alkylation reaction of isomerized alkane includes making C4-C6 isomerized alkane as material contact with solid catalyst under self-alkylation reaction condition. It features that there is compound containing strong electric negative element in 10-8000 ppm as reaction assistant. The self-alkylation reaction process needs no addition of olefin, and the alkylated product has high branch chain degree and high octane number. No olefin in the reaction makes the catalyst less deactivated.

Description

technical field [0001] The present invention relates to a kind of self-alkylation reaction method of isoparaffin, more specifically isobutane molecular alkylation reaction occurs to generate C 8 Catalytic reaction process of branched alkanes. Background technique [0002] The alkylation reaction of isoparaffins and olefins is the production of C with high octane number in the petrochemical industry. 8 The important process of branched alkanes ("China Oil Refining Technology", edited by Hou Xianglin, Sinopec Press). The reaction is the isoparaffin, usually C 4 Isobutane and olefins (C 3 -C 6 ) react in the presence of an acidic catalyst to obtain branched C 7 -C 9 alkanes. Such as: C produced by the alkylation reaction of isobutane and butene 8 Isoparaffin has high octane number and low Reid vapor pressure, and is an excellent gasoline blending component. [0003] The catalyzer of the above-mentioned alkylation reaction process that industry adopts at present is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/60
Inventor 何奕工满征
Owner CHINA PETROLEUM & CHEM CORP
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