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Hydrogen Peroxide Technology

Country/Region china
Company Jiangsu Kaimao Chemical Technology Co., Ltd
Categories Industrial Water Treatment Chemical
Telephone 519 86151507
ICP License Issued by the Chinese Ministry
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Hydrogen Peroxide Technology

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Hydrogen Peroxide Technology

Hydrogen peroxidemolecular formula: H2O2; molecular structure: H-O-O-H. The oxygen atoms form molecular bond by sp3 hybrid orbital, covalence polar molecule, relative molecular weight 34.01, the mass ration of hydrogen/oxygen is 1:16.

Hydrogen peroxide is colorless liquid with slight special odor. Pure hydrogen peroxide is a pale blue oily liquid. Industrial grade hydrogen peroxide has two types of concentration: 27.5%, and 35%; boiling point: 152.2℃melting point:-0.89℃relative density:1.46(no water)saturated vapor pressure:0.13Kpa.

It can be mixed with water, ethanol and ether at any ratio, not soluble in benzene, petroleum ether. Main application: oxidant, bleaching agent; disinfectant, and dechlorination agent in medical and pharmaceutics. also can be used as rocket fuel, inorganic and organic peroxides, foamed plastic and other porous materials.

Section A. Hydrogen Peroxide Production Process

There are many hydrogen peroxide production methods.
Hydrogen peroxide is produced in the fixed bed oxidation reactor by using anthraquinone and Pd catalyst process.

Hydrogen gas preparation:
Natural gas cracking:
Natural gas, after pre-heating and desulphurization, is mixed with steam in certain proportion and sent to the heating coil of convection section of cracking furnace. The temperature is controlled in the range of 800-850℃. The natural gas has catalytic cracking reaction in the cracking furnace to form H2、CO2 and CO.
Natural gas cracking reaction equation:
CH4 + 2H2O CO2 + 4H2
CH4 + H2O CO + 3H2
CO + H2O CO2 + H2
Steam byproduct generated from cracking process is for self-use.


Hydrogen gas purification
The hydrogen concentration come from cracking furnace is 73%. The rest gas are CO2、CO、CH4. In order to remove these impurities, use changing pressure absorption to purify hydrogen gas. Finally, may receive high pure hydrogen gas( concentration98.5%).

1.Hydrogen peroxide production process
Add certain amount of heavy aromatics and tri-octyl phosphate in the storage tank, then, add diethyl anthraquinone. Agitate and heat the mixture until totally melted. Cool down the solution to ambient temperature. Use diluted hydrogen peroxide and non-ion water to wash, standby for nest step use. (A solution)
Certain amount of non-ion water and powder of K2CO3. are added into storage tank to achieve required concentration by pump circulation. The diluted K2CO3 from dryer is filtrated and evaporated, then, returned to the system for use (2).
The A solution in is pumped to fixed bed hydrogenation reactor and reacted with hydrogen under hydrogenation catalyst, in which, the hydrogen is purified
The hydrogenation reactant liquid, after filtration for impurity removal, is sent to the oxidation process for treatment.
The oxidation tower is divided into two sections. Hydrogenation liquid, after cooling and filtration, is sent to the oxidation tower bottom, the compressed air is divided into two streams, to be sent to the upper section of the bottom of oxidation tower and the lower section of the bottom of oxidation tower.
In oxidation reactor, hydrogenation liquid is reacted with oxygen in the compressed air under certain temperature and pressure to form hydrogen peroxide, the off-gas is recovered and scrubbed through separator, then to be discharged.
Hydrogen peroxide diluted solution is sent to the extraction tower and to be extracted by non-ion water to form hydrogen peroxide with 35-36% concentration.
The discharged waste water from the bottom of extraction tower is sent to drying tower to concentrate potassium carbonate solution for re-use, the excess waste water, through waste water treatment, is discharged.

Section B. Hydrogen Peroxide Quality Specification and Raw Materials Specification

Product Specification

NO.

Name

Unit

Spec.

Remarks

1

Purity

%

35

2

Free Acid(H2SO4)

%

0.05

3

Stability

%

97

5 hour

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