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Slurry bed hydrogenation reactor for hydrogen peroxide production by anthraquinone method and its application

A hydrogenation reactor, hydrogen peroxide technology, applied in the directions of peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, chemical instruments and methods, etc. Uneven temperature distribution, low catalyst utilization efficiency, large catalyst liquid holding capacity, etc., to avoid adverse effects, uniform concentration and temperature distribution, and reduce operating burden

Active Publication Date: 2017-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used in the anthraquinone hydrogenation process in China is the downflow fixed bed reactor, that is, the trickle bed reactor, but the fixed bed reactor has low catalyst utilization efficiency, low reaction selectivity, uneven temperature distribution in the bed, The problem of large local liquid holding capacity of the catalyst and serious degradation of the working fluid

Method used

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  • Slurry bed hydrogenation reactor for hydrogen peroxide production by anthraquinone method and its application

Examples

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preparation example Construction

[0033] In the method for preparing hydrogen peroxide provided by the present invention, the reaction temperature in the riser is 35-80° C., preferably 55-75° C.; the reaction pressure is 0.1-0.5 MPa, preferably 0.2-0.3 MPa.

[0034] In the method for preparing hydrogen peroxide provided by the present invention, the working solution is prepared by dissolving alkylanthraquinone in an organic solvent. The working fluid disclosed in the prior art can be used, which is generally composed of anthraquinone derivatives, heavy aromatic hydrocarbons, trioctyl phosphate and other components mixed in a certain proportion.

[0035] In the method for preparing hydrogen peroxide provided by the present invention, the catalyst used is a supported catalyst in which Group VIII metals are supported on heat-resistant inorganic oxides. Catalysts with hydrogenation / dehydrogenation performance in the prior art can be used, preferably catalysts supporting Group VIII noble metals, such as palladium, ...

Embodiment 1

[0055] Example 1 illustrates the effect of the slurry bed reactor provided by the present invention applied to the preparation of hydrogen peroxide by anthraquinone method.

[0056] Attached figure 1 In the slurry bed reactor shown, the size of the reaction riser is Φ150×5000mm, the size of the expansion section is Φ450×1500mm, the guide tube is composed of two sections, the size of the upper section is Φ400×500mm, and the size of the lower section is Φ300×500mm. The size of the solid-liquid separator is Φ150×1500mm, and there are two sets of ceramic membrane filter components with a height of 500mm installed inside. It is set to automatically recoil when the pressure difference of each filter reaches 0.06MPa, and the recoil liquid is the filtered reaction clear liquid . The filtered clear liquid enters the secondary filter, and the filter medium installed in the secondary filter is a non-woven bag.

[0057] After the hydrogen-containing gas and the working fluid are pre-mix...

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Abstract

The invention discloses a slurry bed hydrogenation reactor for preparing hydrogen peroxide by adopting an anthraquinone process and application of the slurry bed hydrogenation reactor. The hydrogenation reactor comprises an ascension pipe, an expanding section for expanding the upper pipe diameter of the ascension pipe, and a solid-liquid separator, wherein the expanding section is communicated with the upper part of the solid-liquid separator; the bottom of the solid-liquid separator is connected with the bottom of the ascension pipe; a guide cylinder is arranged in the expanding section; the bottom of the ascension pipe is provided with a raw material inlet; the top of the expanding section is provided with a gas outlet; a filter assembly is arranged in the solid-liquid separator and provided with a purified liquor outlet. The method for preparing the hydrogen peroxide is characterized in that the slurry bed hydrogenation reactor is applied to a hydrogenation unit, the gas-liquid-solid three-phase separation efficiency is high, the catalyst locality cannot be excessively hydrogenated, the excessive hydrogenation possibility is reduced, the hydrogenation efficiency is high, and a hydrogen peroxide product with the relatively high concentration can be obtained.

Description

technical field [0001] The present invention relates to a slurry bed loop reactor and its application method, more specifically, to a slurry bed reactor suitable for the hydrogenation process in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide Methods. Background technique [0002] Hydrogen peroxide is an important inorganic chemical raw material, which is widely used in papermaking, textile, chemical synthesis, military industry, electronics, food processing, medicine, cosmetics, environmental protection, metallurgy and many other fields. Hydrogen peroxide decomposes to produce water and oxygen, which has no secondary pollution to the environment and is a green chemical. At present, the anthraquinone method is widely used in the production of hydrogen peroxide at home and abroad. The anthraquinone method to produce hydrogen peroxide uses anthraquinone derivatives as the working carrier. Under the action of a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/20C01B15/023
CPCB01J8/20C01B15/023
Inventor 朱振兴侯栓弟郑博唐晓津胡立峰吕庐峰李学锋
Owner CHINA PETROLEUM & CHEM CORP
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