Measuring and testing – Gas analysis – With compensation detail
Patent
1991-03-29
1992-07-21
Williams, Hezron E.
Measuring and testing
Gas analysis
With compensation detail
73 3107, 73 3105, 55 70, 55 90, 55 91, 55 84, G01N 3000
Patent
active
051312603
ABSTRACT:
A device for the continuous measurement of the ammonia concentration in gases in the ppm range includes a columnar absorption vessel (1) with a hemispherical bottom (4). The bottom of the column includes an overflow (3) and an outlet (5). The gas introduction pipe (7,8) empties above the bottom (4) and below a sieve bottom (6) arranged in the column (1). A packing material (10) rests on the sieve bottom (6), which packing (10) essentially fills the absorption column (1). A cooling part (11) extends from the absorption column (1). The cooling part (11) includes a cooling zone (15) and a gas collection space (16) above it with a closable connection piece (13). A pipe (14), which may include a serrated crown on each end, runs from the gas collecting space (16) downward in a cooled manner to the packing 10. The liquid absorption agent is introduced through a lateral connection piece (18) into the gas collection space (16). For the measurement of ammonia concentration, a certain volume flow of the gas to be measured is washed in a countercurrent flow with the absorption agent, and the NH.sub.3 content is determined in a part of the ammonia containing absorption agent. The volume flow rate of the absorption agent and of the gas from which NH.sub.3 has been removed is measured (the latter being dried), and the ammonia concentration is thereby calculated.
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Brand Reinhold
Engler Bernd
Honen Wolfgang
Koberstein Edgar
Brock Michael
Degussa - AG
Williams Hezron E.
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