Ammonia recovery by scrubbing and condensing
A method and apparatus are described for recovering ammonia from a waste gas mixture comprising ammonia with air and water vapor or with steam. The waste gas is bubbled upwardly through an aqueous bath in a condenser, and then through a scrubber in direct contact with a spray of fresh water. The scrubber and condenser are formed integrally so that fresh ammonia water from the scrubber joins the aqueous bath in the condenser. The temperature of the aqueous bath is controlled, preferably by sensing the temperature thereof to control flow of cooling fluid in noncontact heat exchange with aqueous bath in the condenser. Aqueous ammonia from the bath is withdrawn as product, but it is recycled to the bath if its ammonia concentration is inadequate.
- Assignee:
- Cluett, Peabody and Co., Inc.
- Patent Number(s):
- US 4058375
- OSTI ID:
- 5259663
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
320302* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR
AIR POLLUTION CONTROL
AMMONIA
AQUEOUS SOLUTIONS
CONDENSERS
CONTROL
DESIGN
DISPERSIONS
FLUIDS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
INDUSTRY
MANAGEMENT
MATERIALS RECOVERY
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PROCESSING
SCRUBBERS
SOLUTIONS
STEAM
TEMPERATURE CONTROL
TEXTILE INDUSTRY
VAPOR CONDENSERS
VAPORS
WASTE MANAGEMENT
WASTE PROCESSING
WATER VAPOR