| 摘要 |
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 operation either under sulfur adsorption-type conditions or under regeneration or preconditioning type conditions, with normally two of the three Claus catalytic reaction zones being operated under adsorption-type conditions while the other is operating under regeneration or preconditioning type conditions. 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. |
