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, production of liquid hydrocarbon mixtures, organic chemistry, etc., can solve the problems of insufficient compact structure, unsatisfactory mixing, and large equipment, etc., to facilitate processing , Improve the level of micro-mixing, the effect of saving equipment investment

Active Publication Date: 2019-04-16
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

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

[0039] Alkylation catalyst concentrated sulfuric acid (concentration is 98.5%, the same below) and circulating hydrocarbons are pumped into a group of static mixers 1 (Sulzer Engineering Machinery Manufacturing Co., Ltd. SMV TM type, the same below), 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 circulation pump 3 The circulating acid emulsion in the acid hydrocarbon circulation line 9 undergoes strong mixing, so that the olefins in the mixed material reach a microscopic mixed state. 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 evapora...

Embodiment 2

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

[0043] Alkylation catalyst Concentrated sulfuric acid (98.5% concentration, the same below) and circulating hydrocarbons are pumped into the main channel of a set of static mixer 1 through circulation pump 3, and the prepared alkylation reaction raw materials have alkene ratio of 10.0:1 The side part of the static mixer 1 vertically enters the static mixer 1 through the pipeline 10 (the raw material line is divided into 4 routes), and the circulating acid emulsion in the acid hydrocarbon circulation pipeline 9 pressurized by the circulating pump 3 undergoes strong mixing action, so that the olefins in the mixed material reach a microscopic mixed state . 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 evaporates to rem...

Embodiment 3

[0046] As shown in the figure, a kind of strongly acidic AlCl provided in this embodiment 3 A method and an apparatus for using an ionic liquid as an alkylation catalyst.

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

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Abstract

The invention provides an alkylation reaction method for isoparaffin and alkene with liquid acid for catalysis. The method is characterized in that the method comprises the following steps: alkylation reaction raw materials are fed from a side surface of a static mixer in several streams, the raw materials and an acid hydrocarbon emulsion which is in a main runner of the static mixer are mixed and contacted for 0.2-15 minutes, pressure reduction is carried out for the mixture, the mixture enters a separator, the pressure of the separator is controlled at 0.005-0.18MPa, butane is vaporized in order to take away reaction heat, and most of the acid hydrocarbon emulsion below the separator is supercharged and recycled to the main runner of the static mixer; gas phase components which are separated from the upper part of the separator enters a compressor system, the components are compressed and condensed by a compressor in order to cool the alkylation reaction raw materials, a small part of a hydrocarbon phase which is extracted from the middle part of the coalescer enters a coalescer, an acid phase which is obtained by coalescence returns to the static mixer, a hydrocarbon phase which is obtained by coalescence enters a deisobutanizer, isobutane which is obtained from the top of the deisobutanizer is circulated and returns to the static mixer, and alkylation products are obtained from the bottom of the deisobutanizer.

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): 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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