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Alkylation reaction method and apparatus for isoparaffin and alkene with liquid acid for catalysis

A technology for alkylation reaction and isoparaffin, applied in chemical instruments and methods, production of liquid hydrocarbon mixtures, organic chemistry, etc. The effect of mixing level, easy processing, and equipment investment saving

Active Publication Date: 2016-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mixing of the acid hydrocarbon emulsion and other reactants in the riser is not satisfactory. In addition, the entire reactor system uses a riser, two horizontal tanks and a downcomer, and the equipment is huge and the structure is not compact enough.

Method used

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  • Alkylation reaction method and apparatus for isoparaffin and alkene with liquid acid for catalysis

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] As shown in the figure, this embodiment provides a method and a device using concentrated sulfuric acid as an alkylation catalyst.

[0039] The alkylation catalyst concentrated sulfuric acid (the concentration is 98.5%, the same below) and the circulating hydrocarbon are pumped into a group of static mixers 1 (Sulzer Engineering Machinery Manufacturing Co., Ltd. SMV) through the circulating pump 3 TM type, the same below) the main channel, the prepared alkylation reaction raw material with an alkene ratio of 8.0:1 enters the side part of the static mixer 1 vertically through the pipeline 10 (the raw material line is divided into 2 routes) and is pressurized by the circulating pump 3 The circulating acid emulsion in the acid hydrocarbon circulating line 9 has a strong mixing effect, so that the olefins can reach a micro-mixing state in the mixed material. The uniformly mixed mixed material reacts for a period of time and then enters the separator 2 under reduced pressure...

Embodiment 2

[0042] As shown in the figure, the present embodiment provides a method and device using concentrated sulfuric acid as an alkylation catalyst.

[0043] The alkylation catalyst concentrated sulfuric acid (concentration is 98.5%, the same below) and circulating hydrocarbons are pumped into the main channel of a group of static mixers 1 through the circulating pump 3, and the prepared alkylation reaction raw material with an alkene ratio of 10.0:1 Through pipeline 10 (the raw material line is divided into 4 routes), the side part that vertically enters the static mixer 1 is strongly mixed with the circulating acid emulsion of the acid hydrocarbon circulating pipeline 9 pressurized by the circulating pump 3, so that the olefin reaches a micro-mixed state in the mixed material. . The uniformly mixed mixed material reacts for a period of time and then enters the separator 2 under reduced pressure, and the partially vaporized isobutane in the separator is evaporated to remove the rea...

Embodiment 3

[0046] As shown in the figure, a kind of strong acid AlCl provided by the present embodiment 3 A method and apparatus for an ionic liquid as an alkylation catalyst.

[0047] Alkylation catalyst strong acid AlCl 3 Type ionic liquid (concentration is 95.0%, the same below) and circulating hydrocarbons are pumped into the main channel of a group of static mixers 1 through circulating pump 3, and the prepared alkylation reaction raw materials with an alkene ratio of 7.0:1 are passed through pipeline 10 (The raw material line is divided into 3 routes) The side part entering the static mixer 1 vertically and the circulating acid emulsion of the acid hydrocarbon circulating line 9 pressurized by the circulating pump 3 have a strong mixing effect, so that the olefins can reach a micro-mixed state in the mixed material. The uniformly mixed mixed material reacts for a period of time and then enters the separator 2 under reduced pressure, and the partially vaporized isobutane in the sep...

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Abstract

A liquid acid-catalyzed method for the alkylation of isoparaffins and olefins, characterized in that the raw materials for the alkylation reaction are divided into multiple feeds from the side of a static mixer, and are mixed with the acid hydrocarbons in the main channel of the static mixer. After the emulsion is mixed and contacted for 0.2-15min, it enters the separator under reduced pressure. The pressure of the separator is controlled to be 0.005-0.18MPa to vaporize the carbon tetraalkane and take away the reaction heat. Most of the acid hydrocarbon emulsion in the lower part of the separator is pressurized and circulated. Return to the main channel of the static mixer; the gas phase components separated from the upper part of the separator enter the compressor system, and are compressed and condensed by the compressor to cool the raw materials of the alkylation reaction, and a small part of the hydrocarbon phase is produced in the middle of the separator and enters the coalescer , the acid phase obtained by coalescence returns to the static mixer, the hydrocarbon phase enters the deisobutanizer, the isobutane obtained from the top of the deisobutanizer is recycled back to the static mixer, and the tower still obtains the alkylation product.

Description

technical field [0001] The present invention relates to a liquid acid alkylation reaction method and device, in particular to a liquid acid-catalyzed alkylation reaction method and device of isoparaffin and olefin. Background technique [0002] The alkylation reaction of isoparaffins and olefins mainly refers to the alkylation reaction of isobutane and butene. The essence of the reaction is the organic addition of alkane molecules to olefin molecules in the presence of an acidic catalyst. reaction. Alkylation is an important process in the petrochemical industry. Isomerized C produced by the reaction of isobutane and butene under the action of a strong acid catalyst 8 Alkanes, known as alkylated gasoline. Alkylated gasoline has high octane number (RON94-96), low Reid vapor pressure, extremely low sulfur content and olefin content, and is free of benzene and aromatic hydrocarbons. It is an excellent gasoline blending component. The use of reformulated gasoline as fuel for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G50/00C07C2/62C07C9/16
Inventor 董明会温朗友宗保宁慕旭宏喻惠利俞芳郜亮夏玥穜
Owner CHINA PETROLEUM & CHEM CORP
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