Alkylation reaction technique catalyzed by ion liquid and reactor apparatus

An ionic liquid and reactor technology, used in chemical instruments and methods, petroleum industry, chemical/physical processes, etc., can solve the problems of high cycle ratio and difficult separation, and achieve the goal of improving reaction rate, restoring catalytic activity, and simple separation. Effect

Inactive Publication Date: 2007-11-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to obtain high-octane products while obtaining high conversion rates using conventional autoclaves
Moreover, the ratio of alkane / ene in the feed and material circulation are relatively high during the actual operation of the traditional still reaction process, which causes difficulties in separation

Method used

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  • Alkylation reaction technique catalyzed by ion liquid and reactor apparatus
  • Alkylation reaction technique catalyzed by ion liquid and reactor apparatus
  • Alkylation reaction technique catalyzed by ion liquid and reactor apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: Carry out non-cyclical alkylation reaction according to the process shown in Fig. 1 . The reaction system is pressurized to 0.5 MPa with nitrogen, and the mixed raw materials of isobutane and 2-butene, 1-butene and isobutene in the alkene tank 3 are passed through the alkene feed pipe 17 and the alkene pump 2. The alkene nozzle 18 is sprayed into the rotating packed bed, the volume flow rate of the raw material alkanes is 80 L / h, and the molar ratio of the alkanes in the raw materials is 150:1. At the same time, the ionic liquid in the catalyst tank 7 is sprayed into the rotating bed through the catalyst feed pipe 13 and the catalyst nozzle 11, and the feed rate (volume) ratio of the ionic liquid and the reaction raw materials is 0.5. The ionic liquid and the reaction raw materials are mixed and reacted in the rotating bed packing layer, and then thrown out and collected into the reactor. When the volume of the material in the reactor reaches a certain amo...

Embodiment 2

[0030] Embodiment 2: According to the process shown in Figure 2, the internal circulation alkylation reaction of the material is carried out. Use nitrogen to pressurize the reaction system to 0.4MPa, inject the ionic liquid in the catalyst tank 7 into the reactor through the feeding port 19, and turn on the circulation pump 21 after reaching a certain liquid level, and the alkene pump 2 will pump the alkene tank 3 The mixed feedstock of isobutane and 2-butene, 1-butene and isobutene is sprayed into the rotary bed through alkene feed pipe 17 and alkene nozzle 18, the volume flow rate of raw material is 80L / h, ionic liquid and The feed rate (volume) ratio of the reaction raw materials was 0.25:1. The ionic liquid and the reaction raw materials are mixed and reacted in the packing layer. After being thrown out and collected in the reactor, part of the material in the reactor is sucked into the conical mixer 22 by the circulation pump, and mixed with the ionic liquid from the cat...

Embodiment 3

[0031] Embodiment 3: Carry out external circulation type alkylation reaction according to the process shown in Fig. 2 . Use nitrogen to pressurize the reaction system to 0.5 MPa, inject the ionic liquid in the catalyst tank 7 into the reactor through the feeding port 19, and turn on the circulation pump 21 when a certain liquid level is reached, and the alkene pump 2 will transfer the alkene tank 3 The mixed feedstock of isobutane and 2-butene, 1-butene and isobutene is sprayed into the rotary bed through alkene feed pipe 17 and alkene nozzle 18, the volume flow rate of raw material is 80L / h, ionic liquid and The reaction raw material feed rate (volume) ratio was 0.25. The ionic liquid and the reaction raw materials are mixed and reacted in the packing layer. After being thrown out and collected in the reactor, part of the material in the reactor is sucked into the conical mixer 22 by the circulation pump, and mixed with the ionic liquid from the ion tank in the conical mixer...

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Abstract

This invention involves an ion liquid catalytic alkylation process and a responsing reactor. The process comprises carrying out a reaction of isobutene, C3-C5 olefins and ionic liquid catalyst in a rotating bed reactor with reaction temperature of 8~40DEG C, pressure of 0.3~1.0 MPa and rotor speed of 100~2500 rpm, wherein the volume ratio of ion liquid feed to alkanes-olefins is 0.1~1.5:1 and the molar ratio of alkanes to olefins is 10~300, and controlling the reaction time less than 1~10min. The invention improved alkylation reaction selectivity, and the octane value of alkylation product can reach to 94-100. The operation is simple and low-cost, and has no pollution to environment and beneficial to environment protection.

Description

technical field [0001] The invention relates to an alkylation reaction process and a reactor device, in particular to an alkylation reaction process of isoparaffin and olefin with an ionic liquid catalyst, and also relates to the application of high gravity technology in chemical reaction engineering. Background technique [0002] In the petroleum refining industry, the alkylation reaction process of isobutane and C3-C5 olefins is an important process for producing clean, high-octane gasoline components, and the obtained alkylated gasoline is an environmentally friendly petroleum Refined products. At present, the catalysts used in industrial alkylation reactions are mainly liquid strong acids such as concentrated sulfuric acid or hydrofluoric acid. However, these liquid strong acids have problems such as strong corrosiveness, difficult production and operation, troublesome post-processing of products, and serious environmental pollution. Ionic liquid is a kind of salt that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C2/58C10G17/00B01J8/10
Inventor 陈建峰邹海魁初广文邵磊陈标华
Owner BEIJING UNIV OF CHEM TECH
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