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US 4,526,590 AGranted
Cooling and condensing of sulfur and water from Claus process gas
AssigneeStandard Oil Company (Indiana)
InventorsJohn W. Palm, Lorenz V. Kunkel
Life of this patent
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Abstract
The Claus process gas is cooled in a condenser to condense most of the sulfur vapor in solid form. The gas leaving the condenser is then further cooled to condense water without producing substantially any sulfur in an undesirable form. The resulting gas of reduced water content is useful in Claus reaction, particularly the low temperature Claus reaction in which the product sulfur is adsorbed on the catalyst.
Claims5
A process for removing water from a Claus process gas stream containing vaporized sulfur, said process comprising:
- passing said Claus process gas stream through a sulfur condenser and removing liquid elemental sulfur therefrom and then
- (a) passing the resulting gas stream from said sulfur condenser through a first cooling zone maintained at such conditions, including temperature, so as to effect condensation and solidification of elemental sulfur without condensation of water;
- (b) passing the resulting gas stream from said first cooling zone through a second cooling zone maintained at such conditions, including temperature, so as to effect condensation of water;
- periodically increasing the temperature of said first cooling zone to melt solid sulfur accumulated therein;
- and
- periodically increasing the temperature of said second cooling zone to melt solid sulfur accumulated therein.
3 more elements
Dependencies are inferred from the claim text.