Cba for claus tail gas cleanup

Details Cba for claus tail gas cleanup Cba for claus tail gas cleanup

C - Chemistry, Metallurgy

01

B

23/332

C01B 17/04 (2006.01)

Patent

CA 1070929

ABSTRACT OF THE DISCLOSURE An improved method for further removal of sulfur from the tail gas of a conventional Claus plant by the use of a Cold Bed Adsorption process involving the specific improvement of maintaining at all times the lead Claus reactor of a series of such reactors at sufficiently high temperatures to promote hydrolysis of COS and CS2 and then utilizing part or all of the hot effluent gases of this lead reactor to regenerate the sulfur-fouled Cold Bed Adsorption catalyst by passing the hot stream through the fouled reactor, removing the deposited sulfur and then returning the stream to the Claus plant at a point essentially immedi- ately downstream from where it was originally withdrawn. Such a method is useful in maintaining ultra-high sulfur conversion levels on a com- mercial scale.

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