Hydrogen peroxide(H2O2) is a bleaching or de-coloring agent. It’s viscous than water. In dilute solution, it appears colorless. Hydrogen peroxide is often used as a strong oxidizer. It’s a clear liquid. Hydrogen peroxide always decomposes to water and oxygen.
This Article Contains:
Definition
This Article Contains
Raw Materials Used for H2O2 Production
Chemicals Used for H2O2 Production
Manufacturing Process of H2O2
Hydrogenation
Filtration
Oxidation
Extraction
Vacuum Distillation
Uses of H2O2
Technical Grade (TG) H2O2
Chemical Grade (CG) H2O2
Food Grade (FG) H2O2
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Raw Materials Used for H2O2 Production:
• Hydrogen
• Air
• Water
Chemicals Used for H2O2 Production:
Working Solution (WS): Working Solution is prepared from the following three solvents and one solute-
Solvents:
1. Solvesso-150: It’s used for keeping WS in oxidized format.
2. Tetra Butyl Urea (TBU): It’s used for keeping WS in hydrogenated format.
3. Tri Octyl Phosphate (TOP): It’s used for corrosion inhabitant.
Solute:
1. 2-Ethyl Anthra Quinone (2-EAQ): It’s dissolved in the three solvents discussed above and by this way working solution is prepared.
Palladium Catalyst (Pd. Catalyst): It’s used into the reactor. It works as a catalyst for hydrogenation reaction.
Activated Alumina: It’s used in reversion bed for converting inactive quinone to active quinine.
Stabilizer (Dequest): It’s used for increasing the stability of hydrogen peroxide (H2O2).
Phosphoric Acid: It’s used for preparing chemical dosing for oxidizer and extractor. Actually it’s used for maintaining certain pH of hydrogen peroxide (H2O2).
Nitric Acid: It’s used for washing working solution (WS), Oxidizer, Extractor and Filters.
Caustic (NaOH): It’s used for cleaning Primary Filters (Filters for filtering Palladium Catalyst)
Manufacturing Process of H2O2:
Hydrogen peroxide is manufactured by the following few steps-
Hydrogenation:
Hydrogen (H2) and 2-EAQ (Q) react with one another with the presence of Palladium catalyst. Anthrahydroquinone (H2Q) is manufactured by the following reaction.
Q + H2 → H2Q
Filtration:
The palladium catalyst is filtered out of the working solution.
Oxidation:
The working solution is oxidized by blowing air through the working solution. Hydrogen peroxide (H2O2) is formed for the oxidation reaction.
H2Q + O2 → Q + H2O2
Extraction:
The hydrogen peroxide (H2O2) is separated in a liquid-liquid extraction column. From here 35 % concentrated hydrogen peroxide (H2O2) is generated.
Vacuum Distillation:
The hydrogen peroxide (35 % H2O2) is concentrated by the vacuum distillation. From here 50 % concentrated hydrogen peroxide (H2O2) is generated.
Uses of H2O2:
Hydrogen peroxide(H2O2) is used in the following sectors-
Technical Grade (TG) H2O2:
Hydrogen peroxide (H2O2) of this grade is used in the following industries-
• Textile Industries
• Pulp and Paper Industries
Chemical Grade (CG) H2O2:
Hydrogen peroxide (H2O2) of this grade is used in the following industries-
• Pharmaceutical Industries
Food Grade (FG) H2O2:
Hydrogen peroxide (H2O2) of this grade is used in the following industries-
• Condensed Milk Industries
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