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An absorbing solution for the removal of nitrogen oxide form a gas containing same

Patent ·
OSTI ID:6785883
; ; ;
Oxides of nitrogen can be removed efficiently from a gas containing such oxides of nitrogen by bringing the gas into contact with an aqueous solution containing an organic acid alkali salt and a salt of metal selected from the group consisting of Fe, Co, Ni, Cu and Mn in the presence of a sulfurous acid alkali salt. The efficiency for removing oxides of nitrogen is much improved by use of a polybasic acid alkali such as ethylenediamine tetracarboxylic acid alkali salt or nitrilo-tricarboxylic acid alkali salt as said organic acid alkali salt.
Assignee:
Kueha Kagaku Kogyo Kabushiki Kaisha
Patent Number(s):
US 4087372
OSTI ID:
6785883
Country of Publication:
United States
Language:
English

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