Method for the abatement of hydrogen chloride

Patent · Fri Dec 31 23:00:00 EST 1976

OSTI ID:862892

Winston, Steven J ^[1]; Thomas, Thomas R ^[1]

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1. Idaho Falls, OH

The present invention provides a method for reducing the amount of hydrogen chloride contained in a gas stream by reacting the hydrogen chloride with ammonia in the gas phase so as to produce ammonium chloride. The combined gas stream is passed into a condensation and collection vessel and a cyclonic flow is created in the combined gas stream as it passes through the vessel. The temperature of the gas stream is reduced in the vessel to below the condensation temperature of ammonium chloride in order to crystallize the ammonium chloride on the walls of the vessel. The cyclonic flow creates a turbulence which breaks off the larger particles of ammonium chloride which are, in turn, driven to the bottom of the vessel where the solid ammonium chloride can be removed from the vessel. The gas stream exiting from the condensation and collection vessel is further cleaned and additional ammonium chloride is removed by passing through additional filters.

• DOE Contract Number: E(10-1)-1375
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 4038369
• OSTI ID: 862892
• Country of Publication: United States
• Language: English

Related Subjects

/423/
abatement
additional
ammonia
ammonium
ammonium chloride
amount
below
bottom
breaks
chloride
cleaned
collection
collection vessel
combined
combined gas
condensation
contained
created
creates
crystallize
cyclonic
driven
exiting
filters
flow
gas
gas phase
gas stream
hydrogen
hydrogen chloride
larger
larger particles
method
particles
passed
passes
passing
phase
produce
provides
reacting
reduced
reducing
removed
solid
stream
temperature
turbulence
vessel
walls