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Production method of low-TOC ultra-high-purity hydrogen peroxide

A production method, technology for hydrogen peroxide, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, climate sustainability, etc., can solve the problem of increasing hydrogen peroxide storage And transportation cost, low concentration of hydrogen peroxide and other problems, to reduce the difficulty of purification, reduce processing steps, and ensure the effect of concentration

Pending Publication Date: 2022-07-12
镇江润晶高纯化工科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of production method of low TOC ultra-high purity hydrogen peroxide, to solve the production process of existing hydrogen peroxide on the market that the above-mentioned background technology proposes, contain more water in the hydrogen peroxide solution of generation, cause The concentration of hydrogen peroxide is low, which increases the problem of storage and transportation costs of hydrogen peroxide

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  • Production method of low-TOC ultra-high-purity hydrogen peroxide

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Effect test

Embodiment 1

[0029] A kind of production method of low TOC ultra-high purity hydrogen peroxide, comprises the steps:

[0030] S1. Preparation of raw materials: prepare 600ml of sodium dihydrogen phosphate, 400ml of sodium hydroxide, 90ml of enhanced distilling agent, 20g of activated carbon and 50g of dewatering agent;

[0031] S2, the mixing reaction of raw materials: the sodium hydroxide solution in the step (1) is added to a suitable reaction vessel, then sodium dihydrogen phosphate is gradually added to the reaction vessel, and the mixed solution in the reaction vessel is stirred, stirring Manual stirring is adopted, and the pH of the mixed solution in the reactor is measured at the same time, and the pH is measured by an electronic pH meter, until the pH of the mixed solution is at 8.0, and the hydrogen peroxide mixed solution is prepared;

[0032] S3, preliminary purification of hydrogen peroxide: the hydrogen peroxide mixed solution in step (2) is poured into the cooling pool for co...

Embodiment 2

[0039] A kind of production method of low TOC ultra-high purity hydrogen peroxide, comprises the steps:

[0040] S1. Preparation of raw materials: prepare 700ml of sodium dihydrogen phosphate, 500ml of sodium hydroxide, 120ml of enhanced distilling agent, 30g of activated carbon and 70g of dewatering agent;

[0041] S2, the mixing reaction of raw materials: the sodium hydroxide solution in the step (1) is added to a suitable reaction vessel, then sodium dihydrogen phosphate is gradually added to the reaction vessel, and the mixed solution in the reaction vessel is stirred, stirring Manual stirring was adopted, and the pH of the mixed solution in the reactor was measured at the same time, and the pH was measured by an electronic pH meter, until the pH of the mixed solution was at 8.8, and the hydrogen peroxide mixed solution was prepared;

[0042] S3, preliminary purification of hydrogen peroxide: the hydrogen peroxide mixed solution in step (2) is poured into the cooling pool ...

Embodiment 3

[0049] A kind of production method of low TOC ultra-high purity hydrogen peroxide, comprises the steps:

[0050] S1. Preparation of raw materials: prepare 700ml of sodium dihydrogen phosphate, 500ml of sodium hydroxide, 120ml of enhanced distilling agent, 30g of activated carbon and 70g of dewatering agent;

[0051] S2, the mixing reaction of raw materials: the sodium hydroxide solution in the step (1) is added to a suitable reaction vessel, then sodium dihydrogen phosphate is gradually added to the reaction vessel, and the mixed solution in the reaction vessel is stirred, stirring Manual stirring was adopted, and the pH of the mixed solution in the reactor was measured at the same time, and the pH was measured by an electronic pH meter, until the pH of the mixed solution was at 8.8, and the hydrogen peroxide mixed solution was prepared;

[0052] S3, preliminary purification of hydrogen peroxide: the hydrogen peroxide mixed solution in step (2) is poured into the cooling pool ...

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Abstract

The invention discloses a production method of low-TOC ultra-pure hydrogen peroxide, which comprises the following steps: preparation of raw materials, mixing reaction of the raw materials, preliminary purification of hydrogen peroxide, secondary purification of hydrogen peroxide, purification of hydrogen peroxide, filtration of hydrogen peroxide, purification of impurities and storage of hydrogen peroxide. The multi-time distillation process is set, the low-pressure distillation process is adopted, decomposition of the hydrogen peroxide in the heating process is reduced, the concentration of the hydrogen peroxide is guaranteed, the yield of the hydrogen peroxide is increased, through multi-time evaporation and fractionation, the solubility of the hydrogen peroxide aqueous solution is gradually increased, and the water content in the hydrogen peroxide solution is reduced; by adding the activated carbon and the water removal agent, organic impurities and water in the hydrogen peroxide aqueous solution are further absorbed, distillation purification is supplemented, and the TOC concentration in the hydrogen peroxide is 1 ppm or below.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide, in particular to a production method of low TOC ultra-high-purity hydrogen peroxide. Background technique [0002] Hydrogen peroxide, also known as hydrogen peroxide, is an inorganic compound with slightly higher viscosity than water and unstable chemical properties. The aqueous solution is colorless and transparent liquid, soluble in water, alcohol, ether, insoluble in benzene, petroleum ether, pure peroxide Hydrogen is a light blue viscous liquid with a melting point of -0.43 °C and a boiling point of 150.2 °C. The molecular configuration of pure hydrogen peroxide will change, so the melting and boiling point will also change. Solid density at freezing point is 1.71g / cm 3 , the density decreases with increasing temperature. It is usually mixed with sulfuric acid, ammonia water, hydrochloric acid, etc. and used in the cleaning process of large-scale integrated circuits. When used in...

Claims

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Application Information

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IPC IPC(8): C01B15/013
CPCC01B15/013Y02P20/10
Inventor 王金城钱凯徐晴许维慧
Owner 镇江润晶高纯化工科技股份有限公司
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