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Alkylation reaction device and method

An alkylation reaction and an alkylation reactor technology, which is applied in the field of alkylation reaction devices, can solve the problems of poor acid-hydrocarbon mixing effect, atmosphericization space, and high reaction temperature, and achieves increased processing capacity and high operating flexibility. , the effect of large processing capacity

Active Publication Date: 2013-10-23
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

The acid consumption of the stirred reactor with built-in heat exchange tube bundle is too high, the static mixing reactor with isobutane gasification needs a lot of gasification space, the acid-hydrocarbon mixing effect of the jet reactor is poor, and the reaction temperature is too high. high

Method used

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  • Alkylation reaction device and method

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Embodiment Construction

[0026] The present invention feeds low-carbon olefins and isobutane and liquid acid into the reactor. Low-carbon olefins include butene, propylene, pentene or olefin mixtures, and the preferred reaction materials are liquefied gas and isobutane after ether and concentrated sulfuric acid.

[0027] In the method of the present invention, the reactor packing is a structured packing with a cavity structure, and any structured packing that can form two disjoint intervals can be used, and corrugated packing and plate packing with a cavity structure are preferred here. The packed packing can be single-stage, two-stage or multi-stage, but multi-stage packing is preferred. There is space between each section of packing. Isobutane and concentrated sulfuric acid are fed to the first section of packing at the top of the reactor, and the liquefied gas after ether is divided into multiple feeds and enters the top of each section of packing.

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Abstract

The invention discloses an alkylation reaction device and method. The device comprises an alkylation reactor; a reaction raw material inlet extends into the upper part of the reactor; liquid distribution equipment is connected below the raw material inlet; alkylation reaction raw materials enter a reaction region of the reactor through the liquid distribution equipment; the inner part of the reactor consists of more than one section of regulating filler with a cavity structure; coolant distribution pipes are arranged at two ends of a cavity of each filler; a heat exchange region is formed in each cavity; a reaction region is formed between the two cavities; the reaction regions and the heat exchange regions are alternately arranged in the radial direction of the reactor; the reaction regions and the heat exchange regions are not communicated. The alkylation reaction is executed by using the reactor; iso-butane and sulfuric acid are premixed and then are sprayed into the reactor through a sprayer; low-carbon olefin is sprayed into the reactor through the sprayer; after the reaction raw materials enter the reaction regions, under the action of cutting and dispersing of each regulating filler, acid and hydrocarbon are fully mixed, and the mixing effect is good; the reaction low-temperature control effect is good.

Description

technical field [0001] The invention belongs to the technical field of oil refining and processing, and in particular relates to an alkylation reaction device and method. Background technique [0002] High-octane alkylate produced from low-carbon olefins and iso-alkanes under the action of acid catalysis is an ideal gasoline blending component. Alkylation reaction raw material olefins and isoalkanes have poor solubility with catalyst concentrated sulfuric acid, especially isobutane and concentrated sulfuric acid are difficult to dissolve. Although the solubility of olefins and concentrated sulfuric acid is slightly better than that of isobutane, olefins can easily be polymerized into high polymers above C12 at temperatures above 10°C under the catalysis of concentrated sulfuric acid. In addition, the alkylation reaction is still an exothermic reaction. If the reaction temperature is not properly controlled, the side reaction of olefin polymerization will be exacerbated. Th...

Claims

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Application Information

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IPC IPC(8): B01J19/24C10G50/00
Inventor 左世伟焦云李网章郝代军刘金龙岳建伟高有飞郭巧玲赵敏洁李宏伟孙大力
Owner CHINA PETROLEUM & CHEM CORP
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