Process developed for enhanced H2S recovery from sour-water strippers

Indian Oil Corp. Ltd. has developed a process for enhanced recovery of H2S from sour water of refinery hydrotreaters. The process Super Sour arrests the loss of H2S from feed the stabilization tank and result in recovery of H2S (7-10 wt % of H2S in feed) from sour-water strippers.The Super Sour design configuration is being implemented at Gujarat refinery with start-up planned by yearend 2009.The design has applications for other processes with high concentrations of H2S in water.Controlling emissionsStringent environmental regulations that emphasize controlling H2S/SO2 emissions in turn necessitate higher recovery of H2S from sour water in sour water stripper unit designs. Usually some a...

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