Process for decreasing the total sulfur content of claus...

Details Process for decreasing the total sulfur content of claus... Process for decreasing the total sulfur content of claus...

B - Operations, Transporting

01

D

23/349

B01D 53/00 (2006.01) B01D 53/48 (2006.01) C01B 17/04 (2006.01) C01B 17/16 (2006.01)

Patent

CA 1045787

A B S T R A C T In a process for removing sulphur compounds from Claus off-gas comprising a reduction step, a cooling step and an absorption or adsorption step, the sulphur dioxide content of the reduced gas is monitored by subjecting a portion of the water-containing cooling liquid after the cooling step to stripping with an inert gas and to measuring the pH of the so stripped cooling liquid; the flow of the off-gas and/or of the reducing agent to the reduction step is controlled in dependency of the results of the pH measurement.

232719

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