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Isobutylene polymerization preparation process method

A superposition reaction and preparation process technology, applied in the field of petrochemical industry, can solve the problems of complex reaction and low conversion rate of isobutene, and achieve the effect of simplifying the separation process, improving the conversion rate and selectivity, and being easy to implement

Active Publication Date: 2018-02-02
丹东明珠特种树脂有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the invention of the present application is to solve the technical problem of complex isobutene superposition reaction and low conversion rate of isobutene, and to provide a preparation method of isobutene superposition reaction, especially this process method can be used on the existing MTBE preparation system device It has the technical advantages of simple process flow, simplified separation process, high conversion rate of isobutene and high selectivity of dimerized isobutene

Method used

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Embodiment 1

[0037] The specific application in embodiment 1 is the above-mentioned catalyst D, the specific application in the embodiment 2 is the above-mentioned catalyst G, the specific application in the embodiment 3 is the above-mentioned catalyst A, and the specific application in the embodiment 4 is the above-mentioned catalyst E; Wherein, The catalyst loading amount in the fixed bed reactor is 40ml, and the catalyst loading amount in the catalytic distillation tower is 100ml.

[0038] The test conditions and results are shown in Table 1:

[0039] Table 1

[0040]

Embodiment 5

[0042] The concrete application in embodiment 5 is the above-mentioned catalyst D, the concrete application in the embodiment 6 is the above-mentioned catalyst G, the concrete application in the embodiment 7 is the above-mentioned catalyst A, and the concrete application in the embodiment 8 is the above-mentioned catalyst E; wherein, The amount of catalyst loaded in the fixed bed reactor is 40ml, and the amount of catalyst loaded in the catalytic distillation tower is 100ml.

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Abstract

The application provides an isobutylene polymerization preparation process method. The method is implemented in a fixed bed reactor, and comprises the following steps: pumping butane-containing isobutylene into the fixed bed reactor which is filled with a cation exchange resin modified catalyst, and reacting at the reaction temperature of 50 to 90 DEG C, the air speed of 0.5 to 4.0 h<-1> and the reaction pressure of 0.8 to 1.5 MPa, wherein the cation exchange resin modified catalyst is obtained by modifying a highly acidic cation exchange resin catalyst by silicon phosphate solution. The technical scheme has the technical characteristics of easiness in implementation, simplicity in separation process, safety and environment friendliness; the preparation of alpha-diisobutylene of isobutylene polymerization oligomerization is completed in the existing MTBE preparation system device; the isobutylene conversion rate and the alpha-diisobutylene selectivity are remarkably improved; the gasoline yield loss caused by forbidding the MTBE in oil refining and processing industry is remedied.

Description

technical field [0001] The application of the present invention relates to the technical field of petrochemical industry, in particular to the process method of isobutylene oligomerization superposition reaction. Background technique [0002] Environmental protection regulations and the automotive industry's technical standards for unleaded gasoline for vehicles have been continuously improved, and the importance of gasoline upgrading has become increasingly prominent. As an excellent blending component for the production of lead-free, oxygen-containing and high-octane gasoline, MTBE has been widely used in countries all over the world. However, since trace amounts of MTBE were found in groundwater in the United States, people have paid more and more attention to the environmental protection of MTBE. The U.S. Environmental Protection Agency has ruled that MTBE is carcinogenic. Some states, such as California, have banned the use of MTBE as an additive in gasoline since 2003....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/28C07C11/02B01J31/08
CPCB01J31/08B01J2231/12C07C2/28C07C2531/08C07C11/02Y02P20/10
Inventor 吕晓东王义成冷东斌段弘毅何罡管秀明刘晓琳
Owner 丹东明珠特种树脂有限公司
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