Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Inorganic sulfur acid or anhydride producing type
Patent
1992-10-05
1994-05-03
McMahon, Timothy M.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Inorganic sulfur acid or anhydride producing type
422161, 423533, C01B 1754
Patent
active
053085876
ABSTRACT:
Apparatus and process for the production of gaseous sulphur dioxide mixture for conversion to sulphur trioxide in a catalytic converter in the production of sulphuric acid by the contact process. Apparatus comprises the furnace to produce sulphur dioxide gas from elemental sulphur and a first dry air stream; means for feeding a first portion of the sulphur dioxide gas to a waste heat boiler to cool the gas; the improvement comprising combining a second portion of the sulphur dioxide gas exiting the furnace with a second dry air stream to provide a combined gaseous stream which bypasses the boiler and subsequently is combined with the cooled sulphur dioxide stream. The system provides use of a bypass valve which experiences only cooled sulphur dioxide containing gases with its attendant reduced corrosion. Further, the system may operate at higher temperatures than is common to provide further advantages.
REFERENCES:
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patent: 3963423 (1976-06-01), Dorr et al.
patent: 4016248 (1977-04-01), Vydra et al.
patent: 4296088 (1981-10-01), Stauffer
patent: 4533537 (1985-08-01), Dittmar et al.
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