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Preparation method of isobutylene superposition reaction

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, achieve the effect of simplifying the separation process, improving the conversion rate and selectivity, and compensating for the loss of gasoline production

Active Publication Date: 2020-07-03
丹东明珠特种树脂有限公司
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  • Abstract
  • Description
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  • 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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  • Preparation method of isobutylene superposition reaction
  • Preparation method of isobutylene superposition reaction
  • Preparation method of isobutylene superposition reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The above-mentioned catalyst D is specifically used in Example 1, the above-mentioned catalyst G is specifically used in Example 2, the above-mentioned catalyst A is specifically used in Example 3, and the above-mentioned catalyst E is specifically used in Example 4; wherein, The catalyst loading in the fixed bed reactor is 40 ml, and the catalyst loading in the catalytic distillation column is 100 ml.

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

[0039] Table 1

[0040]

Embodiment 5

[0042] The above-mentioned catalyst D is specifically used in Example 5, the above-mentioned catalyst G is specifically used in Example 6, the above-mentioned catalyst A is specifically used in Example 7, and the above-mentioned catalyst E is specifically used in Example 8; wherein, The catalyst loading amount in the fixed bed reactor is 40ml, and the catalyst loading amount in the catalytic distillation column 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, and specifically relates to a process method for isobutylene oligomerization and superposition reaction. Background technique [0002] Environmental regulations and the automotive industry have continuously improved the technical standards of unleaded gasoline for vehicles, and the importance of gasoline upgrading has become increasingly prominent. As an excellent blending component for producing unleaded, oxygenated and high-octane gasoline, MTBE has been widely used in countries all over the world. However, since a trace amount of MTBE was found in groundwater in the United States, people have paid more and more attention to the environmental protection of MTBE. The US Environmental Protection Agency has ruled that MTBE is carcinogenic. Some states, such as California, have banned MTBE as a gasoline additive since 2003. point. These environmental prot...

Claims

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Application Information

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Patent Type & Authority Patents(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宏毅何罡管秀明刘晓林
Owner 丹东明珠特种树脂有限公司
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