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A kind of miniature hydrogen peroxide synthesis device and method without tail gas emission

A technology for hydrogen peroxide and tail gas emissions, applied in chemical instruments and methods, peroxides/peroxyhydrates/peroxyacids/superoxides/ozone oxides, inorganic chemistry, etc., can solve the reaction and separation process efficiency Low, bulky equipment, long stay and other problems, to avoid emptying or recycling, reduce the volume, reduce the effect of production equipment

Active Publication Date: 2020-11-13
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem with this method is that the efficiency of the reaction and separation process is low, and the material needs to stay in the equipment for a long time, resulting in a large volume of equipment; the process is complicated, involving multiple phase separations and the circulation of reactants. In each step, after the hydrogenation or oxidation reaction is carried out and the gas-liquid phase separation is realized, the resulting gas phase (including unreacted hydrogen / oxygen and working fluid vapor) needs to be discharged as tail gas, resulting in a large number of equipment and flammable emissions. Exhaust gas and loss of working fluid

Method used

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  • A kind of miniature hydrogen peroxide synthesis device and method without tail gas emission

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Experimental program
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Effect test

Embodiment 1

[0025] in such as figure 1 In the shown device, hydrogen peroxide is synthesized, and the concrete steps are as follows:

[0026] (1) Configure the working solution containing anthraquinone derivatives

[0027] Mix m-trimethylbenzene and trioctyl phosphate to form a solvent, wherein the volume fraction of trioctyl phosphate is 25%; mix 2-ethylanthraquinone with the solvent as a solute to obtain a concentration of 2-ethylanthraquinone of 0.6 mol / L working solution.

[0028] (2) hydrogenation reaction

[0029] At a temperature of 60°C and a pressure of 200kPa (gauge pressure), pass a total of 0.02mol of hydrogen and 400mL of the working fluid obtained in step (1) into the hydrogenation membrane microdisperser 1 to obtain the average diameter of the bubbles Gas-liquid mixed fluid A of 10 microns;

[0030] Be that temperature is 60 ℃, pressure is under the condition of 200kPa (gauge pressure), make gas-liquid mixed fluid A flow through and be filled with the micro-packed bed ...

Embodiment 2

[0036] in such as figure 1 In the shown device, hydrogen peroxide is synthesized, and the concrete steps are as follows:

[0037] (1) Configure the working solution containing anthraquinone derivatives

[0038] Mix m-trimethylbenzene and trioctyl phosphate to form a solvent, wherein the volume fraction of trioctyl phosphate is 25%; mix 2-ethylanthraquinone and tetrahydro 2-ethylanthraquinone as solutes with the solvent to obtain 2- The total concentration of ethylanthraquinone and tetrahydro 2-ethylanthraquinone is 0.2mol / L working solution.

[0039] (2) hydrogenation reaction

[0040] At a temperature of 50°C and a pressure of 500kPa (gauge pressure), pass a total of 0.01mol of hydrogen and 400mL of the working fluid obtained in step (1) into the hydrogenation membrane microdisperser 1 to obtain the average diameter of the bubbles A gas-liquid mixed fluid A of 200 microns;

[0041] The temperature is 50 DEG C, and the pressure is under the condition of 500kPa (gauge press...

Embodiment 3

[0047] in such as figure 1 In the shown device, hydrogen peroxide is synthesized, and the concrete steps are as follows:

[0048] (1) Configure the working solution containing anthraquinone derivatives

[0049] Mix m-trimethylbenzene and trioctyl phosphate to form a solvent, wherein the volume fraction of trioctyl phosphate is 25%; mix 2-ethylanthraquinone as a solute with the solvent to obtain a concentration of 2-ethylanthraquinone of 0.8mol / L working solution.

[0050] (2) hydrogenation reaction

[0051] At a temperature of 60°C and a pressure of 600kPa (gauge pressure), pass a total of 0.08mol of hydrogen and 400mL of the working fluid obtained in step (1) into the hydrogenation membrane microdisperser 1 to obtain the average diameter of the bubbles A gas-liquid mixed fluid A of 100 microns;

[0052] Be that temperature is 60 ℃, pressure is under the condition of 600kPa (gauge pressure), make gas-liquid mixed fluid A flow through and be filled with the micro-packed be...

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Abstract

The invention discloses a miniature exhaust-free hydrogen peroxide synthesizing device and method and belongs to the technical field of chemical reaction. The device comprises a hydrogenation microdisperser, a micro-packed bed, an oxidation microreactor, a micro-extractor and a phase separation tank connected in an order. The microreactor realizes the catalytic hydrogenation of anthraquinone-containing derivatives and oxidation of the hydrogenated anthraquinone-containing derivative work liquid. Through extraction separation, hydrogen peroxide is obtained. In synthesis, hydrogen and oxygen conversion rates are 100% so that tail gas emission is avoided. The device is free of a gas-liquid separator. The synthesis method is effectively simplified. The production economy and safety are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of chemical reaction, and in particular relates to a miniature device and method for synthesizing hydrogen peroxide without tail gas emission. Background technique [0002] Hydrogen peroxide is an important industrial raw material, which can be widely used in chemical synthesis, environmental protection, papermaking, textile, national defense, electronics, medicine, food and agriculture, etc., as an oxidizing agent, bleaching agent, disinfectant, polymer Initiators and crosslinkers, propellants, etc. The anthraquinone method is the main method for producing hydrogen peroxide in industry today, and more than 98% of the hydrogen peroxide in the world is produced by this method. The production of hydrogen peroxide by the anthraquinone method mainly involves three main reaction and separation steps: the catalytic hydrogenation process of the working solution containing anthraquinone derivatives, the oxidation p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 骆广生张吉松谭璟
Owner TSINGHUA UNIV
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