Claus process flow diagram

The Claus process consists of partial combustion of the hydrogen sulfide-rich gas stream (with one-third the stoichiometric quantity of air) and then reacting the resulting sulfur dioxide and unbumed hydrogen sulfide in the presence of a bauxite catalyst to produce elemental sulfur. Refer to the process flow diagram in Figure 7. 

Figure 7-7 shows a simplified process flow diagram of the Claus process. The first stage of the process converts H2S to sulfur dioxide and... 

Bulk Recovery-Clous Process. The classic Claus process is the most common method of producing sulfur. Figure 2-8 is a simplified flow diagram of a typical Claus plant for a feed acid gas with greater than 50% H2S. The first thermal oxidation reaction is fast and takes place in a high-temperature (2,300-2,500°F) furnace-type reactor. The second reaction is relatively slow and requires several stages of catalytic reactors (400-500°F). The gas is cooled to condense and remove sulfur and is then reheated between reactors. The heat liberated by the reactions is used to make medium-pressure steam in the boiler and low-pressure steam in the sulfur condensers. 

Hgure 8-2. Typical flow diagram of two-stage straight-through Claus process plant. 

Figure 8-27. Schematic flow diagram of the MODOP process applied to Claus plant tailgas treatment (Kettner and Llermann, 1988). Reprinted with permission from (XI Gas Journal, Jan. 11,1988, copyright PennWeliPidrHshing Co.

Figure 9-49. Flow diagram of IFP process for Claus-planttail gas treating.

Figure 14-22. Simplified flow diagram of Suiflnol unit integrated Into an overali process including a Claus sulfur recovery unit and a tall gas treatment system. (Taylor and Hugill, 1991)...

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