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Pure isobutene superimposition synthesis preparation process method and superimposition application catalyst thereof

A technology for the preparation of pure isobutene, which is applied in the field of catalysts for superposition synthesis of isobutene mixed with carbon four and its preparation, and can solve the problems of difficult control of reaction depth, many side reactions such as trimerization, and danger-prone problems

Pending Publication Date: 2021-10-22
丹东明珠特种树脂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the superposition synthesis of high-purity isobutylene faces technical problems such as violent reaction, huge heat release, many side reactions such as trimerization, and difficulty in controlling the depth of reaction. Lack of resin catalysts and mixing and safe preparation processes suitable for the superposition synthesis of high-purity isobutene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation device of the superposition synthesis preparation process of pure isobutene in this patent application is a fixed-bed reactor. Take 400ml of superimposed application catalyst and put it into a fixed-bed reactor with an inner diameter of 50mm and a length of 1000mm. Pure isobutene is used as a raw material at a temperature of 60°C. , the pressure is 1.0Mpa, the space speed is 0.5h -1 React runs. Among them, the concentration of pure isobutene is not less than 99%. The composite application catalyst A that it adopts is obtained through the following preparation steps:

[0014] polymerization

[0015] 60 parts by weight of styrene, 20 parts by weight of methyl methacrylate, 6 parts by weight of p-ethylstyrene, 4 parts by weight of m-ethylstyrene, 10 parts by weight of p-divinylbenzene and 8 parts by weight of m-divinylbenzene 1,000,000,000,000,000,000,000, and porogen propylene glycol diacetate, 0.4 weight portion of the initiator benzoyl peroxide weighe...

Embodiment 2

[0021] Take 400ml of superimposed application catalyst B and put it into a fixed-bed reactor with an inner diameter of 50mm and a length of 1000mm, using pure isobutene as raw material, at a temperature of 90°C, a pressure of 1.5Mpa, and a space velocity of 4h -1 React runs. Among them, the concentration of pure isobutene is not less than 99%. The composite application catalyst B that it adopts is obtained through the following preparation steps:

[0022] polymerization

[0023] 80 parts by weight of styrene, 40 parts by weight of methyl methacrylate, 12 parts by weight of p-ethylstyrene, 8 parts by weight of m-ethylstyrene, 15 parts by weight of p-divinylbenzene and 12 parts by weight of m-divinylbenzene part and porogen propylene glycol diacetate, and 1.0 parts by weight of initiator benzoyl peroxide are weighed and put into a mixing tank, stirred for 0.5h, and the feed liquid is uniformly mixed to be an oil phase; wherein, the porogen accounts for the weight of the oil ph...

Embodiment 3

[0029] Take 400ml of superimposed application catalyst C and put it into a fixed-bed reactor with an inner diameter of 50mm and a length of 1000mm. Using pure isobutene as raw material, the reaction temperature in the fixed-bed reactor is 80°C, the pressure is 1.2Mpa, and the space velocity is 2.0h -1 React runs. Among them, the concentration of pure isobutene is not less than 99%. The composite application catalyst C that it adopts is obtained through the following preparation steps:

[0030] polymerization

[0031]70 parts by weight of styrene, 30 parts by weight of methyl methacrylate, 8 parts by weight of p-ethylstyrene, 6 parts by weight of m-ethylstyrene, 12 parts by weight of p-divinylbenzene and 10 parts by weight of m-divinylbenzene part and porogen propylene glycol diacetate, and 0.6 parts by weight of initiator benzoyl peroxide are weighed and put into a mixing tank, stirred for 0.5h, and the feed liquid is uniformly mixed to be an oil phase; wherein, the porogen ...

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Abstract

The invention provides a pure isobutene superimposition synthesis preparation process method and a superimposition application catalyst thereof. According to the pure isobutene superimposition preparation method, the reaction temperature of a fixed bed reactor is 60-90 DEG C, the pressure is 1.0-1.5 Mpa, a superimposition reaction is carried out at an air speed of 0.5-4.0 h<-1>, a superimposition application catalyst is a cation exchange resin catalyst prepared by extracting, drying, screening, sulfonating and washing copolymer resin balls, and the copolymer resin ball is formed by suspension copolymerization of styrene, methyl methacrylate, p-ethyl styrene and m-ethyl styrene polymeric monomers in the presence of cross-linking agents of p-divinyl benzene and m-divinyl benzene, a pore-foaming agent, an initiator and a dispersing agent. The technical scheme provided by the invention has the technical advantages of high selectivity of superimposed synthesis preparation and lower than 0.5% of the content of a tripolymer and a higher polymer.

Description

technical field [0001] This patent application relates to a polymer copolymer resin catalyst, its preparation method and its catalytic synthesis application in the field of petrochemical industry, especially to a catalyst for isobutylene superposition synthesis of mixed carbon four and its preparation method. Background technique [0002] Both ethanol and MTBE are oxygenated gasoline cleaning additives. However, according to the "Implementation Plan for Expanding the Production of Biofuel Ethanol and Promoting the Use of Ethanol Gasoline for Vehicles" jointly issued by the National Development and Reform Commission and other 15 ministries and commissions, it is required that no oxygen-containing compounds, such as MTBE, light gasoline after ether, etc., be artificially added to ethanol gasoline Chemical components can no longer be used as gasoline blending components. Therefore, one of the technical directions for the transformation of the original MTBE preparation system i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/28C07C11/02B01J31/10B01J35/08
CPCC07C2/28B01J31/10C07C2531/10B01J2231/20B01J35/51C07C11/02
Inventor 王义成刘成军吕晓东孙方宪吴万春管秀明温世昌周璇刘晓林段宏毅赵霞李倞琛
Owner 丹东明珠特种树脂有限公司