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Separation and coupling technology for multiphase catalytic reaction

A technology of reaction separation coupling and catalytic reaction, which is applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical chemical processes, etc., can solve problems that do not involve industrial applications, and achieve saving equipment investment, energy consumption and The effect of operating cost, heat transfer reaction speed improvement, and process simplification

Inactive Publication Date: 2005-01-05
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The research on ionic liquids is still in its infancy, focusing on the preparation, theoretical research and simple application of the substance, and almost no industrial applications

Method used

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  • Separation and coupling technology for multiphase catalytic reaction
  • Separation and coupling technology for multiphase catalytic reaction
  • Separation and coupling technology for multiphase catalytic reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example is the separation and production of butyl acetate by cyclic catalytic reaction, and the device is as attached Figure 5 As shown, it includes a glass packed tower, filled with glass beads, and a heating kettle is arranged at the bottom of the tower. Butanol and acetic acid are pumped in from the middle and lower part of the reaction section of the tower, with a molar ratio of 2:1, using [Bmim]BF 4 Ionic liquid, reaction kettle liquid temperature 130°C, tower top 20°C, continuous operation, composed of chromatographic analysis tower top product, calculated acetic acid conversion rate is 40%.

Embodiment 2

[0034] This example is the separation and production of methyl methacrylate (MMA) by cyclic catalytic reaction. The device is as attached Figure 6 As shown, it includes a glass packed tower, filled with glass beads, and a heating kettle is arranged at the bottom of the tower. Methanol and methacrolein are pumped in from the middle of the tower reaction section, the molar ratio is 8:3, and oxygen or oxygen-enriched air is fed in from the bottom of the tower, using [Bmim]PF 6 The ionic liquid is controlled at a proper temperature of the reactor liquid and the temperature of the tower top, and is continuously operated under reduced pressure. It is composed of chromatographic analysis of the tower top product, and the conversion rate of methacrolein is calculated to be 60%.

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Abstract

A separating-coupling process for the circulating multi-phase catalytic reaction features that the mixture of catalyst and ionic liquid flows with the liquid phase in the reactor, where the catalytic reaction on reactant takes place, while the reactant, resultant, catalyst and ionic liquid are separated from each other. Its advantages are high reaction efficiency and easy separation.

Description

technical field [0001] The invention relates to a separation and coupling technology of circulating heterogeneous catalytic reactions, which is characterized in that the catalyst is mixed with the ionic liquid and then flows in the reactor with the liquid phase, and reacts with the reactants to undergo a catalytic reaction, and at the same time realizes the reaction of reactants, products, and catalysts. and ionic liquid separation process. This process can be applied to all processes that can be used for reaction and separation to produce products. It not only avoids the immobilization of catalysts, but also makes the process easy to operate; at the same time, the introduction of ionic liquids makes the dispersion of the catalysts good, speeds up the reaction rate, and improves the reaction efficiency. Partially reacted ionic liquids can also play a role in catalyzing or promoting reactions; ionic liquids and catalysts form a homogeneous or pseudo-homogeneous mixture, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/00B01J19/00
Inventor 张锁江赵威张香平李春山李桂花徐泉清王蕾
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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