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US 5,204,082 AGranted
Sulfur dioxide generation by submerged combustion and reduced thermal cycling by use of a hot recycle of sulfur
AssigneeCF Braun & Company
InventorRonald L. Schendel
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Abstract
A method of making high purity sulfur dioxide by submerged combustion is disclosed. Sulfur is combusted in a first liquid pool with an oxygen-containing gas and the vapor effluent is removed and cooled in a first cooling zone to a temperature above approximately 600.degree. F. The condensed sulfur is separated as liquid sulfur from the vapor in the cooled effluent and passed back to the reactor as the supply of liquid sulfur for conversion to sulfur dioxide.
Claims8
A method for the production of sulfur dioxide, comprising:
- combusting boiling sulfur with an oxygen-containing gas within a first liquid sulfur pool to produce a sulfur dioxide;
- continuously removing sulfur laden vapor effluent from the first liquid sulfur pool;
- passing the vapor effluent to an indirect cooling zone, wherein the vapor effluent is cooled to not below 600.degree. F. while forming condensed sulfur having a temperature above 600.degree. F.;
- producing a sulfur depleted vapor by separating said condensed sulfur from the vapor in said cooled effluent;
- and
- recycling said condensed sulfur at a temperature not below 600.degree. F. to the first liquid sulfur pool for conversion to sulfur dioxide or vaporization.
3 more elements
Dependencies are inferred from the claim text.