Reactor for exothermic reaction and application of reactor

An exothermic reaction and reactor technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of large volume, different heat transfer requirements, uneven distribution of reaction degree, etc., to reduce the volume, speed up the reaction, Less difficult to reload

Active Publication Date: 2014-07-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of the large volume of the existing tubular reactor and the uneven distribution of the degree of reaction in the tubular reactor and the different heat removal requirements, the inventor proposed a new type of reactor after experiments and calculations.

Method used

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  • Reactor for exothermic reaction and application of reactor

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Embodiment 1

[0029] Use reactor of the present invention to be used for acetone ammoniation to prepare isopropylamine, the structure and type of reactor are as figure 1 shown. Heat exchange tube fixed bed section filling 13m 3 Catalyst, adiabatic fixed bed section packing 4m 3 catalyst. The catalyst uses the catalyst BC-A-30 produced by Beijing Research Institute of Chemical Industry. The fixed bed section of the tubes uses hot water under pressure to remove the reaction heat, the reaction temperature is controlled at 135°C, the pressure of the reaction system is 1.3MPa, and the volume space velocity of the acetone liquid phase is 0.7h -1 , the molar ratio of acetone, hydrogen and ammonia is 1:3:3. The temperature of the adiabatic fixed bed section was measured to be 135-142°C. Sampling and analysis of the material at the outlet of the reactor showed that the conversion rate of acetone was 100%.

Embodiment 2

[0034] Use the reactor of the present invention for the hydrogenation of acetone to produce Virahol, the structure and type of the reactor are as figure 1 shown. Tube fixed bed section filling 10m 3Catalyst, adiabatic fixed bed section packing 3m 3 catalyst. The catalyst uses catalyst BC-A-31 produced by Beijing Research Institute of Chemical Industry. The fixed bed section of the tubes uses hot water under pressure to remove the reaction heat, the reaction temperature is controlled at 135°C, the pressure of the reaction system is 1.0MPa, and the volume space velocity of the acetone liquid phase is 0.7h -1 , the molar ratio of acetone to hydrogen is 1:5. The temperature of the adiabatic fixed bed section was measured to be 135-141°C. Sampling and analysis of the material at the outlet of the reactor showed that the conversion rate of acetone was 100%.

Embodiment 3

[0036] Use the reactor of the present invention for the hydrogenation of benzene to prepare hexanaphthene, the structure and type of the reactor are as figure 1 shown. Tube fixed bed section filling 10m 3 Catalyst, adiabatic fixed bed section packing 4m 3 catalyst. As the catalyst, catalyst BC-A-60 produced by Beijing Research Institute of Chemical Industry was used. The fixed bed section of the tubes uses hot water under pressure to remove the reaction heat, the reaction temperature is controlled at 175°C, the pressure of the reaction system is 0.6MPa, and the volume space velocity of the benzene liquid phase is 0.7h -1 , The molar ratio of benzene to hydrogen is 1:5. The temperature of the adiabatic fixed bed section was measured to be 175-181°C. The material at the outlet of the reactor was sampled and analyzed, and the conversion rate of benzene was 100%.

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Abstract

The invention belongs to the technical field of reactors and provides a reactor for an exothermic reaction to solve the problems of large size of the conventional tubular reactor and nonuniform reaction degree distribution and different heat removing requirement in the conventional tubular reactor. The reactor comprises a heat exchange type tube nest fixed bed section and a heat insulation type fixed bed section; the heat insulation type fixed bed section is positioned at a downstream of the heat exchange type tube nest fixed bed section; and the filling volume ratio of catalysts of the two sections is (0.2-5):1. The reactor can be used for various exothermic reactions such as preparation of isopropamide through acetone ammoniation, preparation of isopropanol through acetone hydrogenation, and preparation of cyclohexane through benzene hydrogenation, and has the advantages that the reactor is small in size and low in cost, processing is easy to realize, and yield can be improved.

Description

technical field [0001] The present invention relates to a reactor and its application, more particularly, the present invention relates to a reactor for exothermic reaction and its application. Background technique [0002] In industrial production equipment, when the exothermic reaction has a large heat release, a shell-and-tube reactor is used, the tube side is filled with catalyst, and the shell side flows a heat transfer medium for heat transfer, such as water. [0003] Fixed bed reactors are divided into adiabatic fixed bed reactors, heat exchange fixed bed reactors and autothermal fixed bed reactors. The adiabatic fixed-bed reactor is suitable for the reaction in which the exothermic or endothermic reaction does not greatly increase the temperature of the material. The reactor is simple to process and low in cost. The heat exchange fixed bed reactor is used in the case of a large reaction exotherm or endotherm, which needs to be heated or removed by a heat transfer me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/04
Inventor 田保亮戴伟杨溢黄龙唐国旗李宝芹
Owner CHINA PETROLEUM & CHEM CORP
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