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A liquid acid-catalyzed alkylation reaction method and device for isoparaffins and olefins

A technology of alkylation reaction and isoparaffin, applied in chemical instruments and methods, organic chemistry, hydrocarbons, etc., can solve the problems of unsatisfactory mixing, bulky equipment, and insufficient compact structure, etc., and achieve improved microscopic mixing The effect of high level, low equipment investment and easy processing

Active Publication Date: 2017-09-29
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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  • A liquid acid-catalyzed alkylation reaction method and device for isoparaffins and olefins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] As shown in the figure, this embodiment provides a method and device using concentrated sulfuric acid as an alkylation catalyst.

[0037] Alkylation catalyst concentrated sulfuric acid (98.5% concentration, the same below) and circulating hydrocarbons are injected into the main channel of a group of jet mixer 2 (GP-3-F-B mixer of Qidong Mixer Factory, the same below) through the circulation pump 4 , the prepared alkylation reaction raw material with an alkene ratio of 8.5:1 enters the throat of the jet mixer 2 vertically through the pipeline 6 (a group of 4 uniformly dispersed small holes are opened in the throat) and the circulation pump 4 The circulating acid emulsion in the compressed acid hydrocarbon circulation line 9 undergoes strong mixing, so that the olefins in the mixed material can reach a microscopic mixed state. The uniformly mixed mixed material enters the packing tube 1 (the filler adopts polypropylene silk structured packing with a porosity of 53%), and ...

Embodiment 2

[0040] As shown in the figure, this embodiment provides a method and device using concentrated sulfuric acid as an alkylation catalyst.

[0041] Alkylation catalyst concentrated sulfuric acid and circulating hydrocarbons are fed into the main channel of a group of jet mixer 2 through circulating emulsion pump 4, and the prepared alkylation reaction raw material with alkene ratio of 10:1 enters the jet mixer vertically through pipeline 6 The throat of 2 (a group of 8 uniformly dispersed small holes is opened in the throat) and the circulating acid emulsion of the acid hydrocarbon circulation pipeline 9 pressurized by the circulating pump 4 are strongly mixed, so that the olefins in the mixed material can achieve microscopic mixing state. The uniformly mixed mixed material enters the packing tube 1 (the filler adopts polypropylene silk structured packing, the porosity is 51%), and is further mixed and contacted in the fine hole flow channel of the filler in the packing tube 1, a...

Embodiment 3

[0044] As shown in the figure, this embodiment provides a method and device using a strongly acidic AlCl3 type ionic liquid as an alkylation catalyst.

[0045] Alkylation catalyst concentrated sulfuric acid and circulating hydrocarbons are pumped into the main channel of a set of jet mixer 2 through circulating emulsion pump 4, and the prepared alkylation reaction raw material with alkene ratio of 6.5:1 enters the jet mixer vertically through pipeline 6 The throat of 2 (a group of 6 uniformly dispersed small holes is opened in the throat) and the circulating acid emulsion of the acid hydrocarbon circulation pipeline 9 pressurized by the circulating pump 4 are strongly mixed to make the olefins in the mixed material achieve microscopic mixing state. The uniformly mixed mixed material enters the packing tube 1 (the filler adopts polypropylene silk structured packing with a porosity of 55%), and is further mixed and contacted in the fine-pore flow channel of the filler in the pac...

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Abstract

A liquid acid-catalyzed alkylation method of isoparaffins and olefins is characterized in that the alkylation reaction raw material enters from the throat of a jet mixer and is mixed and contacted with the acid hydrocarbon emulsion in the main channel of the jet mixer. The resulting mixed material is sprayed from the lower part of the packing tube into the packing tube provided with filler for further contact at a pressure of 0.3-2MPa. The discharged reaction materials are separated, and most of the acid hydrocarbon emulsion is pressurized and then circulated back to the main channel of the jet mixer. A small part of the hydrocarbon phase is extracted and enters the purification step to obtain alkylation products, and the separated gas phase components enter the compression process. The machine system is used to cool the alkylation reaction raw material after being compressed and condensed by the compressor.

Description

technical field [0001] The invention relates to a liquid acid alkylation reaction method and device, in particular to a liquid acid-catalyzed alkylation reaction method and device for isoparaffins and olefins. 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 gasoline blending component. The use of new formula gasoline as the fuel for gasoline engines will grea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C2/62
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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