Method of washing hydrogen sulfide from coke oven gas by the ammonium sulfide method

Patent · Tue May 21 00:00:00 EDT 1985

OSTI ID:6507542

Ritter, H

An improved coke oven gas washing process for removing hydrogen sulfide is proposed wherein the coke oven gas is treated in a hydrogen sulfide scrubber by counterflow with an aqueous ammonia wash water. A stream of aqueous weak ammonia liquor is cooled and sprayed through nozzles in the mid-region of the hydrogen sulfide scrubber. A quantity of aqueous ammonia liquor, corresponding to the quantity which is sprayed through the said nozzles, is withdrawn from the hydrogen sulfide scrubber at a level below the nozzles and is introduced into the top of the said hydrogen sulfide scrubber. Ammonia vapor released at the nozzles has a higher partial pressure than the ammonia partial pressure of the coke oven gas in the region of the nozzle. The aqueous ammonia liquor from the deacidifier is the source of the cooled aqueous ammonia liquor which is introduced through the nozzles. A portion of the aqueous ammonia liquor from the deacidifier is introduced directly into the top of the hydrogen sulfide scrubber as a portion of the required aqueous ammonia wash water.

• Assignee: Dr. C. Otto and Comp. GmbH (Germany, Federal Republic of)
• Patent Number(s): US 4518572
• OSTI ID: 6507542
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
AMMONIA
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTIONS
COKE OVENS
COMBUSTION PRODUCTS
CONTROL
DESULFURIZATION
DISPERSIONS
EQUIPMENT
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REMOVAL
SCRUBBERS
SCRUBBING
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
WASTES