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System and method for concentrating and purifying hydrogen peroxide

A hydrogen peroxide and concentration tower technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, sustainable manufacturing/processing, etc., can solve high energy consumption problems , to achieve the effect of low cost, saving investment and simple operation

Active Publication Date: 2012-10-31
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Concentrated and purified hydrogen peroxide has a wide range of applications in various industries. At present, the technology of concentrating hydrogen peroxide by rectification is mature, but its disadvantage is high energy consumption.

Method used

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  • System and method for concentrating and purifying hydrogen peroxide
  • System and method for concentrating and purifying hydrogen peroxide
  • System and method for concentrating and purifying hydrogen peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] As attached to the manual figure 1 As shown, the hydrogen peroxide concentrated rectification tower T101 is provided with a feed inlet, and the top of the tower is connected to the inlet of the condenser E101, and a part of the outlet of the condenser E101 is extracted, and a part is refluxed to the T101 tower top reflux stream inlet; the hydrogen peroxide concentrated rectification tower T101 tower A part of the product is extracted from the bottom, and a part is connected to the inlet of the bottom reboiler E102 of the hydrogen peroxide concentration tower, and the outlet of the bottom reboiler E102 of the hydrogen peroxide concentration tower is connected to the bottom reflux flow inlet of the hydrogen peroxide concentration distillation tower T101.

[0027] 25~35%wt hydrogen peroxide is used as raw material, mixed with stabilizer, and then sent to the hydrogen peroxide concentration and rectification tower T101, the gas phase at the top of the tower enters the conden...

Embodiment 2

[0031] As attached to the manual figure 2 shown, with figure 1The difference is that a steam generator E103 is connected behind the reboiler E102 at the bottom of the tower; the top of the rectification column T102 whose steam heat is not utilized is connected to the tube side inlet of the steam generator E103; the shell side of the steam generator E103 The inlet is filled with the cold stream in the soft water system, and the cold stream in the soft water system exchanges heat with the top of the distillation tower T102, where the heat of the steam at the top of the factory is not utilized, and becomes the hot stream in the soft water system, and then exits from the shell side Entering the shell-side entrance of the reboiler E102 at the bottom of the hydrogen peroxide concentration tower, the hot stream in the softening water system heats the bottom material of the hydrogen peroxide concentration and rectification tower T101, and after the temperature drops, it becomes the c...

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Abstract

The invention relates to a system and a method for concentrating and purifying hydrogen peroxide. A hydrogen peroxide concentration rectifying tower T101 is provided with a feed port; the tower top is connected with an inlet of a condenser E101; one part at the outlet of the condenser E101 is recovered and the other part at the outlet of the condenser E101 returns to a tower top reflux substance inlet of the hydrogen peroxide concentration rectifying tower T101; one part at the bottom of the hydrogen peroxide concentration rectifying tower T101 is recovered and the other part at the bottom of the hydrogen peroxide concentration rectifying tower T101 is connected with an inlet of a hydrogen peroxide concentration tower bottom reboiler E102; and an outlet of the hydrogen peroxide concentration tower bottom reboiler E102 is connected with a reflux substance inlet at the bottom of the hydrogen peroxide concentration rectifying tower T101. The method comprises the following steps: mixing 25 to 35 weight percent of hydrogen peroxide serving as a raw material with a stabilizing agent; feeding into the hydrogen peroxide concentration rectifying tower T101; and allowing the top gas phase to enter the condenser E101 to obtain the hydrogen peroxide product at the concentration of more than or equal to 50 weight percent. The system and the method adopts continuous operation and are suitable for large-scale industrial production; heating mediums are steam and soft water, so contact of organic materials and the hydrogen peroxide is avoided and the system and the method are safe and reliable; and the afterheat in a factory serves as the heat source of the rectifying tower, so low-grade energy is utilized, the public engineering investment is saved, and energy consumption is reduced.

Description

technical field [0001] The invention relates to a hydrogen peroxide concentration and purification process, in particular to an energy-saving hydrogen peroxide concentration and purification system and method. Background technique [0002] Hydrogen peroxide, the chemical formula is H 2 o 2 , the appearance is a colorless transparent liquid, is a strong oxidizing agent. In the chemical industry, it is used as a raw material for the production of sodium perborate, sodium percarbonate, peracetic acid, sodium chlorite, thiourea peroxide, etc., as an oxidant for tartaric acid, vitamins, etc.; in the pharmaceutical industry, it is used as a fungicide and disinfectant , and the oxidizing agent for the production of thiram insecticide and 40l antibacterial agent; it is used as a bleaching agent for cotton fabrics in the printing and dyeing industry, and as a coloring agent after dyeing with vat dyes; it is also used in electroplating solutions to remove inorganic impurities and im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/013
CPCY02P20/10Y02P20/129
Inventor 许春建石蕾
Owner TIANJIN UNIV
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