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Reversible absorption of nitric oxide in low volatile organic liquids containing cupric halides
Author(s) -
Gestrich Wolfgang
Publication year - 1989
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270120107
Subject(s) - chemistry , solubility , flue gas , data scrubbing , halide , absorption (acoustics) , inorganic chemistry , nitric acid , phosphoric acid , nox , salt (chemistry) , organic chemistry , materials science , waste management , engineering , composite material , combustion
The absorption of nitric oxide (NO) in phosphoric acid esters and polyethylene glycol ethers which contain cupric halides has been investigated. Due to high solubility of cupric halides and high equilibrium constants of formed nitrosyl complexes, the effective solubility of nitric oxide can be enhanced to about 100‐fold its solubility in the salt‐free organic liquid which itself amounts to only about 5‐fold the NO‐solubility in water. Calculations taking into account flue gas conditions indicate that the required gas‐liquid ratio in industrial absorption processes will lie in the normal range of flue gas scrubbing processes, namely in the region of 400:1 to 1000:1 in volume. Thus, such a reversible absorption process could a viable alternative to SCR‐processes in flue gas denitrification.