Process for continuously removing and recovering respectively a gas dissolved in a liquid, particularly ammonia from aqueous ammonia waste water
A process is described for continuously removing and recovering a gas dissolved in a liquid, particularly a process for continuously removing and recovering ammonia from aqueous ammonia waste water in a column. The process comprises: distributing the waste water through a packed bed; directly contacting the waste water with a heated counter-current flowing gas across the first packed bed to increase the temperature of the waste water and cool the gas; increasing the pH of the waste water and cool the gas; increasing the pH of the waste water after waste water has passed through the first packed bed; distributing the waste water through a second packed bed; and stripping the gas from the waste water by directly contacting the waste water with the cooled countercurrent flowing gas across the second packed bed.
- Assignee:
- NOV; NOV-87-064830; EDB-87-116519
- Patent Number(s):
- US 4668250
- OSTI ID:
- 6430133
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
10 SYNTHETIC FUELS
AMMONIA
CONTROL
COUNTER CURRENT
DEGASSING
DISSOLVED GASES
FLUID FLOW
FLUIDS
GAS FLOW
GASES
HYDRIDES
HYDROGEN COMPOUNDS
LIQUID WASTES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
PACKED BED
PH VALUE
REMOVAL
SOLUTES
TEMPERATURE CONTROL
WASTE WATER
WASTES
WATER