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Hydrogen Peroxide Production Plant
There are several methods for hydrogen peroxide production, among them the AO(auto-oxidation) process is the most prevailing one. In this process, 2-alkyl anthraquinone is mixed with organic solvent to make up the working solution, which is hydrogenated in presence of catalyst, and the resulting is oxidized by air (or oxygen) in counter-current way before being extracted, regenrated, purified and enriched to get commercial hydrogen peroxideproduct. Depending upon the different reactor type in the hydrogenation unit, AO process is further divided into Fixed Bed Reactor Process and Fluidized Bed Reactor Process. SL Tec provides both processes.
For this hydrogen peroxide production technology, SL TEC cooperates with one of the branch companies of SEDIN Ningbo to offer a turnkey hydrogen peroxide plant.
The Fluidized Bed Reactor Process SL TEC offers uses heavy aromatics-TBU binary solvent in the working solution(WS) system, with the WS capacity (H2O2-kg/m3-WS) reaching 12g/L.
Process Flow Description of Hydrogen Peroxide Plant
1.Hydrogenation Unit
The working solution (WS) is pressurized and enters into the WS Temperature conditioner before being charged to the bottom of the hydrogenation column with Pd catalyst; fresh hydrogen from the surge tank is filtered and combined with the recycling hydrogen from the hydrogen compressor before entering the bottom of the hydrogenation column. The WS and hydrogen flows up in a co-current way, part 2-EAQ is hydrogenated to HEAQ, and the non-reacted hydrogen flows from the hydrogenation column to the separation and cooling unit before mixing with the fresh hydrogen and enters into the hydrogenation column again.
The hydrogen and the hydrogenated solution goes through gas-liquid separation, and the resulting hydrogenated solution is filtered, cooled and fed to the hydrogenated solution storage tank. While the filtered Pd catalyst powder is re-flushed by the re-flushing liquid into the bottom of the hydrogenation for re-use.
