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A production device and production process of highly active polyisobutylene

A technology of polyisobutylene and production process, which is applied in the field of chemical engineering, can solve problems such as pressure cannot be automatically controlled, unfavorable for industrial production, complex reaction process, etc., and achieve the effects of saving equipment investment, excellent quality, and high product yield

Active Publication Date: 2022-02-22
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction process is too complicated and the energy consumption is high, which is not conducive to industrial production
[0006] In the patent of Publication No. CN1412210A, the inventor provides a preparation method of low molecular weight and high activity polyisobutylene, wherein the residence time of the material in the kettle is between 20 minutes and 5 hours, and the pressure is controlled at 0.1-1Mpa. It is a tubular reactor, so changing the reaction time can only be done by changing the material and output flow, the pressure cannot be automatically controlled, and the production efficiency is low

Method used

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  • A production device and production process of highly active polyisobutylene
  • A production device and production process of highly active polyisobutylene
  • A production device and production process of highly active polyisobutylene

Examples

Experimental program
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Effect test

Embodiment 1

[0049] A high-activity polyisobutene production device includes a feed system, a tubular reaction tower 4 and a reaction liquid cooling device in sequence according to the reaction sequence.

[0050] Wherein, the feed system includes a pre-cooling device and a liquid distributor 3;

[0051] Described pre-cooling device comprises isobutylene pre-cooler 2 and solvent / initiator pre-cooler 1; Described isobutylene pre-cooler 2 and the outlet of described solvent / initiator pre-cooler 1 communicate with liquid distribution respectively Device 3; the liquid distributor 3 is arranged on the top of the tubular reaction tower 4.

[0052] Wherein, the inner wall of the tubular reaction tower 4 is provided with a cooling coil 5 filled with cooling liquid; the inside of the tubular reaction tower 4 is equipped with packing 6, and the packing 6 is an inert stainless steel Pall ring type 316 ( Φ38: 38×38×0.6).

[0053] Wherein, the reaction liquid cooling system device includes a coiled tu...

Embodiment 2

[0058] Use the production device in embodiment 1 to carry out the production of highly active polyisobutylene, comprise the steps:

[0059] (1) The mixed solution of aluminum chloride, anisole, n-hexane, isopropyl ether and ethyl benzoate is passed into the solvent / initiator precooler to obtain the mixed solution, and the precooler is set to- Pre-cooling at 34°C; pass isobutene into the isobutene precooler, and set the precooler to -34°C for precooling and liquefaction; the mass ratio of aluminum trichloride: anisole: n-hexane is 1 :5:173.4, isopropyl ether accounts for 2.2wt% of anisole, and ethyl benzoate accounts for 2.9wt% of anisole.

[0060] (2) Fill the cooling coil in the tower with cooling liquid; feed the material from the top of the tubular reaction tower, pass the pre-cooled isobutylene and the pre-cooled mixed solution into the tower at a uniform speed from the top of the tower through the liquid distributor, and react ; The feed rate of isobutylene is 1kg / h, and...

Embodiment 3

[0066] Use the production device in embodiment 1 to carry out the production of highly active polyisobutylene, comprise the steps:

[0067] (1) The mixed solution of aluminum chloride, anisole, n-hexane, isopropyl ether and ethyl benzoate is passed into the solvent / initiator precooler to obtain the mixed solution, and the precooler is set to- Pre-cooling at 24°C; pass isobutene into the isobutene precooler, and set the precooler to -24°C for precooling and liquefaction; the mass ratio of aluminum trichloride: anisole: n-hexane is 1 :5:159.4, isopropyl ether accounts for 2.2wt% of anisole, and ethyl benzoate accounts for 2.9wt% of anisole.

[0068] (2) Fill the cooling coil in the tower with cooling liquid; feed the material from the top of the tubular reaction tower, pass the pre-cooled isobutylene and the pre-cooled mixed solution into the tower at a uniform speed from the top of the tower through the liquid distributor, and react ; The feed rate of isobutylene is 1kg / h, and...

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Abstract

The invention discloses a high-activity polyisobutene production device, which sequentially includes a feed system, a tubular reaction tower and a reaction liquid cooling device according to the reaction sequence; the feed system includes a precooling device and a liquid distributor; the The precooling device includes an isobutylene precooler and a solvent / initiator precooler; the isobutylene precooler and the solvent / initiator precooler are respectively connected to a liquid distributor; the liquid distributor is arranged at The top of the tubular reaction tower. The invention also discloses a method for producing highly active polyisobutene by utilizing the above-mentioned device. The invention can make the mixing of the initiator and the isobutene raw material more uniform, and obtain a product with higher yield, easy control of molecular weight and higher content of terminal α-double bonds.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and in particular relates to a production device and a production process of highly active polyisobutene. Background technique [0002] Polyisobutylene (PIB) is the general name of isobutylene homopolymer. It is a colorless, odorless, non-toxic Newtonian fluid, non-flammable, with excellent chemical stability, acid resistance, alkali resistance, UV resistance, good Excellent properties such as electrical insulation. Highly reactive polyisobutylene (HRPIB) is a homopolymer produced by cationic polymerization of isobutylene, with a relative molecular weight of 500-5000, and the number of methylvinylidene groups at the chain end exceeds 60%. The catalytic system for initiating the polymerization reaction is generally a Lewis acid catalytic system such as an aluminum-based catalytic system, a boron-based catalytic system, and a titanium-based catalytic system. [0003] It has very impo...

Claims

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Application Information

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IPC IPC(8): B01J19/24C08F110/10C08F2/01C08F2/06C08F2/42
CPCB01J19/2415C08F110/10B01J2219/00083
Inventor 田晖邓帅魏海生任万忠房德仁陈小平
Owner YANTAI UNIV
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