PROCESS AIR COMPRESSION FOR AO PROCESS

The present invention relates to a process and an oxidizing unit for producing hydrogen peroxide in an anthraquinone process. The inventive process and oxidizing unit comprise a compressor for obtaining hot compressed oxygen containing gas. The hot compressed oxygen containing gas is utilized in a heat exchanger to increase the temperature of a compressed (cold) offgas obtained in an oxidizing step for the production hydrogen peroxide. Accordingly, the compressed and heated offgas can subjected to an expander without the formation of droplets or damaging the equipment. Moreover, the process and an oxidizing unit reduce the required amount of energy in the form of electrical power and steam, as well as the required amount of cooling medium in an anthraquinone process.