Four catalytic reactor extended claus process

Details Four catalytic reactor extended claus process Four catalytic reactor extended claus process

C - Chemistry, Metallurgy

01

B

23/332

C01B 17/04 (2006.01)

Patent

CA 1303820

ABSTRACT A Claus process sulfur recovery plant comprising a Claus thermal reaction zone and four Claus catalytic reaction zones is operated for the recovery of sulfur, at least three of the Claus catalytic reaction zones being capable of opera- tion either under sulfur adsorption-type conditions or under regeneration or preconditioning type conditions, with nor- mally two of the three Claus catalytic reaction zones being operated under adsorption-type conditions while the other is operating under regeneration or preconditioning type condi- tions. Periodically, sulfur laden catalyst from the adsorption-type reaction zones can be regenerated using a process gas stream derived from the sulfur recovery process followed by preconditioning the freshly regenerated reactor, and placing the freshly regenerated, preconditioned reactor into the final adsorption position for the recovery of sulfur.

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