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https://www.oilngasprocess.com/gas-production-facility/acid-gas-treating/gas-sweetening-processes/direct-conversion-of-h2s-to-sulfur/stretford-process.html Stretford Process - Oil & Gas Process Engineering An example of a process using O2 to oxidize H2S is the Stretford® process, which is licensed by the British Gas Corporation. In this process the gas stream is stretford processoil gasengineering