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US 4,778,490 AGranted
Process for removal of volatile matter from coke-oven plant waters
AssigneeBergwerksverband GmbH
InventorGeorg Pollert
Life of this patent
Estimating the term…
Abstract
In a process for removal of volatile matter such as ammonia, hydrogen-sulphide, and prussic acid from coke-oven plant water by means of gas in a stripper, the tail gas of an ammonia destruction unit is used as stripping gas. Tail gas from a Claus plant can be proportioned to the tail gas of the ammonia destruction unit.
Claims7
A process for removing volatile components selected from the group which consists of ammonia, hydrogen sulfide and prussic acid from a coke-oven-plant water containing same, comprising the steps of:
- (a) feeding a coke-oven-plant water containing volatile components selected from the group which consists of ammonia, hydrogen sulfide and prussic acid to a stripper;
- (b) generating a stripping gas in the form of an exhaust gas from an ammonia cracker and feeding said stripping gas to said stripper;
- (c) stripping said coke-oven-plant water containing said volatile components selected from the group which consists of ammonia, hydrogen sulfide and prussic acid in said stripper with said stripping gas in the form of said exhaust gas from said ammonia cracker;
- and
- (d) maintaining the stripping temperature in step (c) for stripping said coke-oven-plant water containing said volatile components selected from the group which consists of ammonia, hydrogen sulfide and prussic acid with said stripping gas in the form of said exhaust gas from said ammonia cracker, above 70.degree. C. during the stripping.
2 more elements
Dependencies are inferred from the claim text.