Manual

PRINCIPLE OF OPERATION
Bulletin# 250
AS™ is a trademark of Perma Pure LLC.
Phosphoric acid is very hygroscopic so it will draw
water from the gas stream, creating some liquid
phosphoric acid solution in the bottom of the
scrubber. To avoid excess liquid formation, the
scrubber should be heated, either by installation in
a heated enclosure or by using a heated scrubber.
The AS-Series proprietary scrubber media has
been formulated for continuous operation. Its life
expectancy is dependent upon the sample flow
rate and ammonia concentration in the gas
stream. It is very selective in its reactions with the
gas, removing only ammonia. It is also a very safe,
stable chemical to handle and store.
Figure 1 - Flow Schematic
AS
™
- Series
Ammonia Scrubber
User Manual
8 Executive Drive
Toms River, N.J. 08755
Phone: [phone]
732-244-0010
Fax: [phone]
e-mail: [e-mail]
Web Site: www.permapure.com
PERMA PURE
AS™-Series Ammonia Scrubbers remove ammo-
nia from a gas stream to protect analyzers and
sample lines from clogging due to the formation of
ammonium salts.
Ammonia reacts with phosphoric acid, forming
ammonium phosphate. This relatively high melting
point salt immediately deposits inside the ammo-
nia scrubber, removing it from the gas stream.
The reaction is quite selective, and does not affect
the concentrations of other gases in the steam.