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Alkylation method

A technology of alkylation and catalyst, applied in the field of isoparaffin-olefin alkylation, which can solve the problems of high energy consumption of the process system, fast catalyst deactivation, and low service life, and achieve the effect of low energy consumption of the process system

Inactive Publication Date: 2012-03-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0014] The main side reaction of alkylation is the polymerization of olefins, and the production of olefin polymers is the main cause of catalyst deactivation. The above-mentioned patents do not fundamentally solve this problem, so their common disadvantage is that the catalyst deactivates quickly. Low service life, large difference in process conditions for reaction regeneration, high energy consumption of the process system

Method used

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Embodiment Construction

[0038] like figure 1 As shown, the catalyst from the supercritical catalyst regenerator 14 is pressurized or decompressed through the dosing surge tank, and then the catalyst flow is controlled by the slide valve 25, and is transported to the bottom of the riser through the pipeline 26 driven by isoparaffins. Mix with the olefins entering from the pipeline 27 according to a certain ratio, and react in the riser reactor 1. The product, unreacted reactants and catalyst enter the settler 2 together, and the liquid product passes through the inlet 30 through the cyclone separator 3 and the solid catalyst. After separation, the product flows out from the product outlet 4 and enters the product separation system to separate the target product from unreacted reactants, and the unreacted reactant isoparaffins are returned for use. The outflow of the catalyst and the residence time of the catalyst in the settler are controlled by the slide valve 6, and the catalyst deactivated by the r...

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Abstract

The invention discloses an alkylation method. The alkylation reaction is performed with reaction materials contacted with catalyst under the reaction pressure ranging from 1.5MPa to 4.5MPa at the reaction temperature ranging from 40 DEG C to 200 DEG C, and the volume ratio of the catalyst to the reaction materials ranges from 20 to 1:1. Mixture of reaction products with the catalyst is separated, the reaction products enter a separation system, the catalyst to be regenerated enters a regenerator under the pressure ranging from 3.7MPa to 4.0MPa at the temperature ranging from 135 DEG C to 150 DEG C, supercritical extraction and regeneration is performed with the catalyst contacting with extracting agent at the volume ratio of the catalyst to the extracting agent ranging from 3 to 4:1 for a time ranging from 5 minutes to 100 minutes, and regenerated catalyst is recycled.

Description

technical field [0001] The invention relates to an isoparaffin-olefin alkylation method, in particular to a process in which isoparaffins react with C3-C5 olefins to generate alkylated oil. Background technique [0002] The alkylation reaction process refers to the process in which an organic molecule reacts with an organic molecule with an alkyl group to form a branched substance with a higher molecular weight. In the oil refining industry, it usually refers to isoparaffins and C 3 ~C 5 The process in which olefins react to form alkylate. This kind of alkylated oil has become an important blending component of gasoline due to its high octane number, and with the needs of environmental protection, the content of aromatics in gasoline is subject to stricter restrictions, which makes the alkylation process become more and more important. [0003] At present, there are two main types of alkylation processes used in the oil refining industry, namely the HF method and the H 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G50/00
Inventor 韩海波魏小波郝代军刘丹禾
Owner CHINA PETROLEUM & CHEM CORP
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