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Static tube type alkylation reaction device and alkylation reaction method for liquid acid catalysis

A technology of alkylation reaction and reaction device, which is applied in the production of liquid hydrocarbon mixture, petroleum industry, etc., can solve the problems of unsatisfactory mixing, insufficient compact structure, huge equipment, etc., and achieves improved micro mixing level, simple structure, small investment

Active Publication Date: 2015-11-04
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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  • Static tube type alkylation reaction device and alkylation reaction method for liquid acid catalysis
  • Static tube type alkylation reaction device and alkylation reaction method for liquid acid catalysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the catalyst concentrated sulfuric acid and C4 liquefied gas are injected into the mixing reaction section A1 (SMX type static mixer) of the first group of reactors through the circulating emulsion pump for pre-mixing, and the acid-hydrocarbon volume ratio of the acid-hydrocarbon emulsion is 1:1 . The mixed emulsion flows through the whole reactor, so that the acid hydrocarbon emulsion is completely mixed for a period of time in circulation; another stream of C4 liquefied gas reaction materials with a prepared alkanes molar ratio of 8.5:1 enters the front of A1 vertically (two feeds Port) and the mixing reaction section A2 of the second group of reactors, the olefins are strongly mixed with the circulating acid emulsion in A1, and the discharged mixed material enters B1 (the filler used is wire mesh corrugated filler, stainless steel with a wire diameter of 0.15mm Silk), further mixing reaction to take heat, the temperature of the whole react...

Embodiment 2

[0046] Such as figure 1 As shown, the alkylation catalyst is strongly acidic AlCl 3Type ionic liquid and C4 liquefied gas are pumped into the mixing reaction section A1 (SK static mixer) of the first group of reactors through the circulating emulsion pump for pre-mixing, and the acid-hydrocarbon volume ratio of the acid-hydrocarbon emulsion is 1.2:1.0. The mixed emulsion flows through the entire reactor, so that the acid hydrocarbon emulsion is completely mixed for a period of time; another C4 liquefied gas reaction material with a molar ratio of alkanes of 6.0:1 enters A1 and A2 (SK static mixer) vertically ), the olefins are strongly mixed with the circulating acid emulsion in A1, and the discharged mixed material enters B1 (the packing used is Pall ring packing, the specification ￠3.0×3.0) for further mixing and reaction to obtain heat, and the temperature of the entire reaction section is controlled at -3 ℃. The incompletely reacted material from B1 enters the second gro...

Embodiment 3

[0049] Such as figure 2 shown. Alkylation catalyst Concentrated sulfuric acid and C4 liquefied petroleum gas are injected into the mixing reaction section A (SL type static mixer) of each group of parallel reactors through the circulating emulsion pump for pre-mixing, and the acid-hydrocarbon volume ratio of the acid-hydrocarbon emulsion is 1.2 : 1.0. The mixed emulsion flows through the whole reactor, so that the acid hydrocarbon emulsion is completely mixed for a period of time; the prepared C4 liquefied gas reaction material with alkene molar ratio of 9.5:1 enters the mixing reaction section A1 of each group of reactors vertically In the front part and the whole section of A2, the olefins are strongly mixed with the circulating acid emulsion in A1 and A2, and the discharged mixed material enters B1 and B2 respectively (both use corrugated plate structured packing with a porosity of 60-70%). The mixed reaction takes heat, and the temperature of each group of reactors is c...

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Abstract

The invention provides a static tube type alkylation reaction device and an alkylation reaction method for liquid acid catalysis by adopting the same. The reaction device comprises n+1 groups of reactors, wherein n is more than or equal to 1, each group of the reactor comprises a mixed reaction section A and a mixed reaction section B connected in series with the mixed reaction section A, and the mixed reaction section B has a heat exchange function; the mixed reaction section A of the first group of the reactors is marked as A1 which is provided with a fresh liquid acid feed pipeline; the mixed reaction section B of the (n+1)th group of the reactors is marked as Bn+1 which is provided with an alkylation reaction product outlet pipeline for discharging acidolysis hydrocarbon emulsion; part of the acidolysis hydrocarbon emulsion is circulated by a circulating pump; the mixed reaction section A of each group of the reactors is connected with a feed pipeline of an alkylation reaction raw material containing olefin, and the mixed reaction section A is provided with m (m is more than or equal to 1) feed openings for adding the alkylation reaction raw material containing olefin.

Description

technical field [0001] The invention relates to a reactor and an application method for liquid acid alkylation reaction, more particularly to a reactor and application method for the alkylation reaction of isoparaffins and olefins under liquid acid catalysis, and belongs to the field of petrochemical industry. 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 acidic catalysts. reaction. Alkylation is an important process in the petrochemical industry. The isomeric 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) and low Reid vapor pressure, very low sulfur content and olefin content, no benzene and aromatics, and is an excellent ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G50/00
Inventor 董明会温朗友宗保宁慕旭宏杨克勇俞芳喻惠利郜亮夏玥穜
Owner CHINA PETROLEUM & CHEM CORP
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