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Multistage hydrogenation technology for producing hydrogen peroxide by anthraquinone process

A hydrogen peroxide, anthraquinone method technology, applied in the directions of peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, chemical recovery, inorganic chemistry, etc. Viscosity, prolong the regeneration cycle, improve the effect of reaction efficiency

Active Publication Date: 2015-03-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogenation device can fully mix H2 and the working fluid evenly, thereby improving the hydrogenation efficiency, but it has not yet solved the impact of degradation products on the quality of the working fluid during the hydrogenation process

Method used

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  • Multistage hydrogenation technology for producing hydrogen peroxide by anthraquinone process

Examples

Experimental program
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Embodiment 1

[0027] There are two fixed-bed hydrogenation reactors I and II, which are connected in series, and each reactor is equipped with three beds, and the hydrogenation catalyst and the silica regeneration agent are respectively filled according to the "ABAB" method. Fill catalyst 0.45m 3 , a total of 0.157m regenerant is filled 3 . The hydrogenation temperature is 45°C, and the hydrogenation pressure is 0.25MPa. The working liquid and hydrogen enter from the top of reactor I, and after hydrogenation reaction and regeneration occur from top to bottom in the bed, they flow out through the bottom of reactor I, and then enter the bottom of reactor II, and flow from bottom to bottom in the bed. The hydrogenation reaction and regeneration on the upper side flow out from the top of the reactor II; then manually switch the flow direction of the material every hour. After treatment by this method, the contents of hydroanthraquinone and tetrahydroanthraquinone in the hydrogenation solutio...

Embodiment 2

[0029] There are three fixed-bed hydrogenation reactors I, II and III, which are connected in series. Each reactor is equipped with a bed, and the bed is filled with two stages of anthraquinone hydrogenation catalyst and one stage of alumina according to the "ABA" method. Regenerant, a total of 0.45m of catalyst is filled in the two reactors 3 , a total of 0.157m regenerant is filled 3. The hydrogenation temperature is 45°C, and the hydrogenation pressure is 0.25MPa. The working fluid and hydrogen enter from the top of reactor I, and the hydrogenation reaction occurs from top to bottom in the bed, flows out through the bottom of reactor I, and then enters the bottom of reactor II, and occurs in the bed from bottom to top After the hydrogenation reaction, it flows out from the top of the reactor II; then it enters the top of the reactor III, and flows out from the bottom of the reactor III after the hydrogenation reaction occurs from top to bottom in the bed. After treatment...

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Abstract

The invention discloses a multistage hydrogenation technology for producing hydrogen peroxide by an anthraquinone process, which comprises the following steps: operating fluid and hydrogen-containing gas in the hydrogenation technology for producing hydrogen peroxide by the anthraquinone process pass through at least two hydrogenation reactors which are connected in series for a hydrogenation reaction in order along flowing direction of materials in the reactors, and a hydrogenation catalyst and a regeneration agent are alternatively filled in an inter-bed or in a bed layer of each hydrogenation reactor. The technology can improve quality level of the operating fluid, prolong the service life of the catalyst and increase the hydrogen peroxide product quality, and has good application prospect in hydrogen peroxide production technology by the anthraquinone process.

Description

technical field [0001] The invention relates to a hydrogen peroxide production process, in particular to a hydrogenation process for producing hydrogen peroxide by an anthraquinone method. Background technique [0002] In the hydrogenation process of producing hydrogen peroxide by anthraquinone method, the hydrogenation reaction is a very important production unit, because the hydrogenation reaction is a gas-liquid-solid three-phase reaction process with the presence of a catalyst, the reaction is rapid, and with the working liquid When the hydrogenation reaction proceeds, a series of side reactions will also occur. The viscosity of the degradation product is high, which reduces the quality of the working fluid, which is not conducive to the diffusion and contact of the three-phase hydrogen, working fluid and catalyst during the hydrogenation process, which seriously affects the hydrogenation reaction. Efficiency, while also causing expensive anthraquinone consumption. In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
CPCY02P20/584C01B15/023
Inventor 杨秀娜齐慧敏高景山张英
Owner CHINA PETROLEUM & CHEM CORP
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