Chemistry: physical processes – Physical processes
Patent
1986-06-16
1988-03-15
Lacey, David L.
Chemistry: physical processes
Physical processes
23308S, 422110, 422285, 423578R, C01B 17027
Patent
active
047303697
ABSTRACT:
Method and apparatus for recovering sulfur from an aqueous slurry. The slurry is passed downwardly through a shell-and-tube heat exchanger having vertically arranged tubes, wherein it is heated sufficiently to melt the sulfur. The liquid mixture leaving the heat exchanger is discharged into a first separation zone, in which a phase separation between the lighter aqueous phase and the denser liquid sulfur occurs. The upper aqueous phase is then transported to an intermediate point in the height of a vertically elongated second separation zone, while the molten sulfur is transported from the lower end of the first separation zone to a point adjacent the lower end of said second separation zone, in which an interface between the phases is maintained at a point below the entry point of the aqueous liquid phase into the second separation zone. The aqueous liquid is discharged from the top of the second separation zone, while molten sulfur is discharged from the bottom of said zone.
REFERENCES:
patent: 2181687 (1939-11-01), Walker
patent: 3689229 (1972-09-01), Lane et al.
patent: 3832145 (1974-08-01), Ellithorpe et al.
Hardison Leslie C.
Nagl Gary J.
Ari Technologies, Inc.
Lacey David L.
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