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Design of a flue gas probe for ammonia measurement

✍ Scribed by K. Hjuler; K. Dam-Johansen

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
572 KB
Volume
282
Category
Article
ISSN
0003-2670

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✦ Synopsis

Ahstraet

The emission of nitrogen oxides from combustion can be limited by selective catalytic reduction (SCR) and selective non-catalytic reduction (SNRJ by ammonia. In order to control the ammonia slip in these processes it is desirable to measure the ammonia outlet concentration continuously. The problems in doing this are discussed, among which are homogeneous and heterogeneous reactions of ammonia with nitric oxide in the sampling system. The design and test of a diluting flue gas probe is presented, where ammonia is converted to and detected as nitric oxide. The efficiency of various converter designs for the probe was studied in the laboratory.

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