Hydrogenation method for producing hydrogen peroxide and device adopting hydrogenation method

A technology for producing hydrogen peroxide and hydrogenation reaction, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve complex operation control, Occupy a lot of land, equipment investment and other problems, to achieve the effect of reducing the system volume, area reduction, saving investment

Inactive Publication Date: 2014-11-19
河北都邦石化工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hydrogenation reaction method for producing hydrogen peroxide and its device, which solves the problems of large equipment investment, large footprint and complicated operation and control in the existing hydrogenation reaction production method for hydrogen peroxide

Method used

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  • Hydrogenation method for producing hydrogen peroxide and device adopting hydrogenation method
  • Hydrogenation method for producing hydrogen peroxide and device adopting hydrogenation method
  • Hydrogenation method for producing hydrogen peroxide and device adopting hydrogenation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] use figure 2 The structure of the reactor shown: the reactor shell is composed of upper and lower elliptical heads and a cylindrical straight cylinder in the middle, with a height-to-diameter ratio of 1.0, and a push-type impeller. The ratio of the impeller diameter to the reactor diameter is 1 / 3. The filter material in the filter element is a layer of stainless steel mat-type wire mesh with a warp mesh of 165 mesh and a weft mesh of 1100, in which the diameter of the weft is 0.045 mm and the diameter of the warp is 0.071 mm. The wire mesh is fixed on a stainless steel perforated plate, and the perforated plate is fixed between the reactor cylinder and the lower head by a flange. The speed of the stirrer is 200 rpm.

[0054] Add 12 kg of palladium-supported catalyst into the reactor from the catalyst feed pipe 9, and the particle size distribution of the catalyst is 50-100 microns. Hydrogen 43 Nm 3 / h Enter the hydrogenation reactor through the inlet pipe 5, and establis...

Embodiment 2

[0056] According to the same conditions as in Example 1, except that 0.018 kg of catalyst with a particle size distribution of 20-45 microns was added to the reactor, the filtration flux was reduced by 30% compared with Example 1. After 240 hours of continuous operation, the filtration flux remained stable.

Embodiment 3

[0058] According to the same conditions as in Example 2, only 0.13 kg of catalyst with a particle size distribution of 20-45 microns was added to the reactor. After 2 hours of operation, the filtration flux dropped significantly and the reaction was forced to stop.

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Abstract

The invention discloses a hydrogenation method for producing hydrogen peroxide and a device adopting the hydrogenation method. The hydrogenation method comprises the following steps: adding hydrogen-containing gas, and a working solution prepared by dissolving alkylanthraquinone in an organic solvent into a reactor in which a stirrer and a filtering element are arranged; in a stirring state, sufficiently contacting and reacting the working solution, the hydrogen-containing gas and a powdery catalyst to obtain hydrogenated slurry liquid; filtering the obtained hydrogenated slurry liquid by a filtering element to obtain hydrogenated clear liquid; continuously draining the hydrogenated clear liquid out of the reactor, wherein in the filtering element, a filtering material with a filtering function is selected from filter cloth or a metal mesh; the diameter of the thinnest yarn in yarns of the filter cloth or the metal mesh is not greater than the diameter of more than 99wt% of particles in the powdery catalyst. The hydrogenation method provided by the invention integrates reaction, gas-liquid separation and liquid-solid separation and has large filtering flux; backwashing is not required during the liquid-solid separation; the hydrogenation method has the advantages of being simple operation, small in occupied area, low in investment, easy to popularize and the like; by the hydrogenation method, continuous smooth operation can be achieved.

Description

technical field [0001] The invention relates to a method for preparing hydrogen peroxide, in particular to a hydrogenation reaction method for producing hydrogen peroxide and a device thereof. Background technique [0002] As an oxidizing agent, bleaching agent, disinfectant, deoxidizer, polymer initiator and crosslinking agent, hydrogen peroxide is widely used in chemical industry, paper making, environmental protection, electronics, food, medicine, textile, mining, agricultural waste processing and other industries. There is almost no pollution in its production and use, and it is a green chemical product, known as a "clean" chemical product. [0003] The anthraquinone method is the mainstream method for the production of industrial hydrogen peroxide, and more than 99% of the global industrial hydrogen peroxide is produced by the anthraquinone method. In the method, hydrogen peroxide aqueous solution is obtained through processes such as hydrogenation, oxidation and extra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023B01J8/20
Inventor 彭敏娟郭建军申云彩王彦灵杨克勇高国华宗保宁
Owner 河北都邦石化工程设计有限公司
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