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A direct extraction of more than 50% high concentration h 2 o 2 Methods

A H2O2, high-concentration technology, applied in chemical instruments and methods, peroxides/peroxyhydrates/peroxyacids/superoxides/ozone oxides, inorganic chemistry, etc., can solve problems such as energy consumption and space occupation , to achieve the effect of reducing production costs and eliminating equipment

Active Publication Date: 2017-01-18
YICHANG SUPENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the traditional system of high concentration H 2 o 2 With low concentrations of H 2 o 2 Concentrated, need to add a lot of equipment, not only take up a lot of space, but also consume a lot of energy

Method used

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  • A direct extraction of more than 50% high concentration h <sub>2</sub> o <sub>2</sub> Methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] H in the oxidizing solution 2 o 2 The content is 7g / L, and the flow rate of the oxidation solution is 300m 3 , the diameter of the first extraction tower 1 is Φ2200mm, a total of 40 sieve plates, the temperature is 50°C, the amount of pure water added is 3.2T / hr, and the flow rate of the oxidizing solution passing through is 200m 3 , the extraction speed is 0.04m 3 / s, get 30% concentration of H 2 o 2 About 4.6 tons / hr. This part H 2 o 2 (the content of organic impurities is 200-350PPm) together with heavy aromatics into the pipeline mixer 4 for strong mixing (the size of the pipeline mixer 4 depends on the incoming H 2 o 2 The amount varies), then enters the coalescer group 5, and is separated by coalescence. The solvent containing organic impurities flows out from the top of the coalescer group 5, and returns to use after treatment. Purified hydrogen peroxide solution flows out from the bottom as the extractant of the second extraction tower 2. The second ex...

Embodiment 2

[0014] H in the oxidizing solution 2 o 2 The content is 9g / L, and the flow rate of the oxidation solution is 500m 3 , the diameter of the first extraction tower 1 is Φ2800mm, a total of 45 sieve plates, the temperature is 48°C, the amount of pure water added is 5.85T / hr, and the flow rate of the oxidizing solution passing through is 350m 3 , the extraction speed is 0.05m 3 / s, get 35% concentration of H 2 o 2 About 9 tons / hr. This part H 2 o 2 (the content of organic impurities is 200-350PPm) together with heavy aromatics into the pipeline mixer 4 for strong mixing (the size of the pipeline mixer 4 depends on the incoming H 2 o 2 The amount varies), then enters the coalescer group 5, and is separated by coalescence. The solvent containing organic impurities flows out from the top of the coalescer group 5, and returns to use after treatment. Purified hydrogen peroxide solution flows out from the bottom as the extractant of the second extraction tower 2. The second ext...

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Abstract

The invention relates to a method for directly extracting 50%-above high-concentration H2O2, which is characterized in that equipment adopted by the extraction method is composed of two extraction columns connected in series; 50-70% of an oxidation liquid from an oxidation column is extracted in the first extraction column by using pure water as an extractant to obtain 25-40 wt% H2O2 of which the organic impurity content is 200-350ppm; the H2O2 and heavy aromatics enter a pipeline mixer together to be subjected to strong mixing, and enter a coalescer set to be subjected to coalescence and separation, the solvent containing organic impurities flows out of the top of the coalescer set, the purified hydrogen peroxide solution flows out of the bottom, wherein the H2O2 obtained from the first extraction column is used as the extractant, and the organic C content is 200ppm below; and the rest of oxidation liquid from the oxidation column enters the second extraction column for extraction, thereby obtaining the high-concentration H2O2 with the mass concentration of 50% above.

Description

technical field [0001] The present invention relates to a kind of preparation H 2 o 2 extraction method, especially discloses a direct extraction of high-concentration H 2 o 2 The method, including the ratio of the oxidation liquid into the two extraction towers, the extraction agent of the second extraction tower and the treatment method of the extraction agent and the connection method of the two extraction towers, can directly produce high-concentration H 2 o 2 . Background technique [0002] h 2 o 2 (Hydrogen peroxide) is a kind of green chemical, which has more and more applications in environmental protection, chemical synthesis, food, etc. In many fields, such as propane oxidation to propylene oxide and cyclohexanone ammoximation, high concentration of H is required. 2 o 2 . The industrial production of hydrogen peroxide is still mainly based on the anthraquinone automatic oxidation method, that is, the alkyl anthraquinone is dissolved in an organic solvent t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/013
Inventor 傅骐
Owner YICHANG SUPENG TECH CO LTD