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A hydrogenation process in the production of hydrogen peroxide

A hydrogen peroxide and process technology, applied in the direction of peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, chemical instruments and methods, etc., can solve the problem of no significant improvement in side reactions

Active Publication Date: 2017-09-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only makes the mixing of hydrogen and working fluid more uniform, and there is no significant improvement in side reactions compared with the conventional hydrogenation reaction process.

Method used

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  • A hydrogenation process in the production of hydrogen peroxide

Examples

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Effect test

Embodiment 1

[0029] Three hydrogenation towers react in series, hydrogenation tower I is filled with catalyst 0.157m 3 , first hydrogen 46.27Nm 3 / h is divided into three equal ways to introduce respectively, one of which is 6.28m from the whole working fluid 3 After mixing / h, it is introduced into the hydrogen dissolving device I, and all the hydrogen is dissolved into the working liquid under the pressure of 7.5MPa, and then introduced from the bottom of the hydrogenation tower I, passing through the catalyst bed from bottom to top, at 7.0~7.5MPa, 45~ After a rapid hydrogenation reaction at 55°C, it flows out from the top; the effluent is mixed with the second hydrogen gas and then introduced into the hydrogen dissolving device II, and all the hydrogen is dissolved into the working fluid at a pressure of 5.5 MPa, and then from the hydrogenation tower II Introduced at the bottom, passing through the catalyst bed from bottom to top, after a transition hydrogenation reaction occurs at 5.0...

Embodiment 2

[0031] Three hydrogenation towers react in series, hydrogenation tower I is filled with catalyst 0.157m 3 , first hydrogen 46.27Nm 3 / h is divided into three roads: the first road is 23.14Nm 3 / h, the second road is 15.42Nm 3 / h, the third road is 7.71Nm 3 / h. Firstly, the first road and all working fluids are 6.28m 3 After mixing / h, it is introduced into the hydrogen dissolving device I, and all the hydrogen is dissolved into the working liquid under the pressure of 10.0 MPa, and then introduced from the bottom of the hydrogenation tower I, passing through the catalyst bed from bottom to top, at 9.5~10.0MPa, 45~ After a rapid hydrogenation reaction at 55°C, it flows out from the top; the effluent is mixed with the second hydrogen gas and then introduced into the hydrogen dissolving device II, and all the hydrogen is dissolved into the working fluid at a pressure of 7.0 MPa, and then from the hydrogenation tower II Introduced at the bottom, passing through the catalyst b...

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Abstract

The invention discloses a hydrogenation process for hydrogen peroxide production. The process comprises the following steps: (1) in a hydrogenation process for producing hydrogen peroxide by an anthraquinone process, arranging a hydrogenation tower I, a hydrogenation tower II and a hydrogenation tower III, and feeding hydrogen gas in three channels, i.e., hydrogen gas I, hydrogen gas II and hydrogen gas III; (2) mixing and dissolving working fluid feed and the hydrogen gas I in high-pressure gas dissolving equipment, and then, enabling the solution to enter the hydrogenation tower I for a first-stage hydrogenation reaction; (3) mixing and dissolving effluent of the first-stage hydrogenation reaction and the hydrogen gas II in the high-pressure gas dissolving equipment, and then, enabling the solution to enter the hydrogenation tower II for a second-stage hydrogenation reaction; (4) mixing and dissolving effluent of the second-stage hydrogenation reaction and the hydrogen gas III in the high-pressure gas dissolving equipment, and then, enabling the solution to enter the hydrogenation tower III for a third-stage hydrogenation reaction; and (5) enabling a material obtained after the third-stage hydrogenation reaction to flow out, carrying out gas-liquid separation, and going to next procedure. According to the process, through controlling the proportion of dissolved hydrogen, not only can a relatively high hydrogenation effect be achieved, but also minimal anthraquinone degradation products are obtained, so that the improvement on product concentration and device scale and the lowering of the consumption of a catalyst and anthraquinone are facilitated.

Description

technical field [0001] The invention relates to a hydrogenation process in the production of hydrogen peroxide, in particular to a high-efficiency hydrogenation process for producing hydrogen peroxide by an anthraquinone method. Background technique [0002] At present, the industrial production method of hydrogen peroxide is mainly the anthraquinone method. In the process of producing hydrogen peroxide by the anthraquinone method, the anthraquinone hydrogenation process is a very important production unit. It is a gas-liquid-hydrogenation process carried out in a fixed-bed reactor filled with a catalyst. Solid three-phase reaction process, the reaction temperature is generally 45 ~ 75 ° C, the reaction pressure is generally 0.2 ~ 0.4MPa. [0003] The result of the hydrogenation reaction directly affects the quality level of the working fluid, the product concentration and the production scale of the device, etc. The main indicators to measure the hydrogenation process are t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
Inventor 方向晨杨秀娜齐慧敏阮宗琳
Owner CHINA PETROLEUM & CHEM CORP
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