Hydrogen Peroxide (H2O2) is manufactured by anthraquinone process. In EB Nuberg’s patented hydrogen peroxide process methodology; the chemical is manufactured by the circulation of an organic working solution (consisting of different solvents and 2-ethyl anthraquinone, which is the active chemical). The working solution is hydrogenated and oxidized, after which the product is extracted using very pure water.
Hydrogen gas is added to the working solution in the presence of a Pd metal catalyst. The hydrogen is chemically bonded to the 2-ethyl anthraquinone. The catalyst is filtered off and returned to the hydrogenation reactor.
When the working solution is contacted with compressed air the oxygen of the air reacts with the hydrogen that has been bonded to the 2-ethyl anthraquinone. This reaction forms the hydrogen peroxide, which is dissolved in the working solution.
To get the H2O2 in a useable form it is extracted from the working solution using a very pure water. The product is a hydrogen peroxide solution with a concentration of typically 35 to 40 weight percent. This can be further concentrated by distillation, for example if the H2O2 is to be transported to an end user. The peroxide free working solution is returned to the hydrogenator to start a new cycle.
Special features of EB Nuberg’s Swedish technology:
|Raw materials and Utilities||Consumption/ton H2O2||Consumption/ton product 50% conc.|
|Aromatic Solvent, kg||5||2.5|
|Catalyst (2% Pd), gram||25||12.5|
|Phosphoric Acid, kg||1.0||0.5|