Process for desulphurization of a gaseous effluent...

Details Process for desulphurization of a gaseous effluent... Process for desulphurization of a gaseous effluent...

2010-04-15

2011-12-06

Vanoy, Timothy (Department: 1734)

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

C423SDIG018, C422S105000, C422S108000, C422S111000

Reexamination Certificate

active

08071068

ABSTRACT:
The invention concerns a process for desulphurization of a gaseous effluent containing hydrogen sulphide using a Claus treatment unit followed by a Claus tail gas treatment unit (TGT), said process comprising using a device for on-line analysis of the ratio H2S/SO2at the outlet from the TGT unit and a feed-back loop which can maintain said H2S/SO2molar ratio at the outlet from the TGT unit to a value close to 2 and generally in the range 1.5 to 2.5.

REFERENCES:
patent: 4100266 (1978-07-01), Smith
patent: 4405593 (1983-09-01), Schlauer et al.
patent: 4836999 (1989-06-01), Reed et al.
patent: 7250149 (2007-07-01), Smith
patent: 1 097 890 (1981-03-01), None
patent: 56-44844 (1981-04-01), None
Search Report of FR 0901863 (Nov. 20, 2009).

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