Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including external recycle loop
Reexamination Certificate
2005-03-29
2005-03-29
Stoner, Kiley S. (Department: 1725)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including external recycle loop
C422S198000, C422S211000
Reexamination Certificate
active
06872368
ABSTRACT:
A method for processing a gas containing at least hydrogen sulfide (H2S) and at least sulfur dioxide (SO2), includes the steps of contacting the gas with a liquid solvent containing at least one catalyst in a contacting stage, recovering gaseous effluent substantially containing no hydrogen sulfide and no sulfur dioxide from the contacting stage, and separating liquid sulfur from liquid solvent in a decantation zone downstream of the contacting stage. In order to remove by-products resulting from degradation of the catalyst, a liquid fraction F containing at least solvent, catalyst, sulfur and the solid by-products resulting from degradation of the catalyst is extracted from after the contacting stage. The liquid fraction F is sent to a processing stage distinct from the contacting stage where the liquid fraction F is heated to a temperature at least partially crystallizing the by-products, and the at least partially crystallized by-products separated from the rest of the liquid fraction F containing at least solvent. At least a stream F1comprising solvent, catalyst and sulfur and substantially free of the by-products and a stream F2mostly comprising the by-products are recovered.
REFERENCES:
patent: 4387037 (1983-06-01), Trentham et al.
patent: 5389351 (1995-02-01), Hasebe et al.
patent: 5935547 (1999-08-01), LeComte et al.
patent: 5951961 (1999-09-01), Viltard et al.
patent: 6413488 (2002-07-01), Smith et al.
Barrere-Tricca Cecile
Lecomte Fabrice
Streicher Christian
Antonelli Terry Stout & Kraus LLP
Institut Francais du Pe'trole
McHenry Kevin
Stoner Kiley S.
LandOfFree
Method and device for processing a gas containing hydrogen... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for processing a gas containing hydrogen..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for processing a gas containing hydrogen... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3401168