C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/332
C01B 17/04 (2006.01)
Patent
CA 1211922
ABSTRACT OF THE DISCLOSURE A straight-through three reactor system and pro- cess produces acceptable levels of sulfur recovery from acid gas at a cost significantly less than that required for a standard modified four reactor Claus system. The system includes two conventional Claus reactors and one cold bed adsorption (CBA) reactor in series. Four conden- sers are provided, one disposed before each of the cata- lytic reactors, and one disposed after the CBA reactor. The system is designed to operate either in a recovery mode or in a regeneration mode. In the recovery mode, the reactors are in series and the last reactor is operated below dew point of sulfur (CBA reactor). In regeneration mode, effluent from the third condenser is heated in a first heat exchanger where effluent from the first cata- lytic reactor is used as the heat source. Sulfur is vaporized in the CBA reactor and is recovered in the fourth condenser. Effluent from the fourth condenser is then passed to an incinerator.
460836
Amoco Corporation
Gowling Lafleur Henderson Llp
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