An absorbing solution for the removal of nitrogen oxide form a g

Details An absorbing solution for the removal of nitrogen oxide form a g An absorbing solution for the removal of nitrogen oxide form a g

1976-01-22

1978-05-02

Padgett, Benjamin R.

Compositions

Absorptive, or bindive, and chemically yieldive

55 68, 2521883R, 423235, 423239, 423242, B01D 5354

Patent

active

040873722

ABSTRACT:
Oxides of nitrogen can be removed efficiently from a gas containing such oxides of nitrogen by bringing said 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.

REFERENCES:
patent: 3923954 (1975-02-01), Petrey et al.
patent: 3932585 (1976-01-01), Moriguchi et al.

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