Method of adsorbing and removing nitrogen oxides

Details Method of adsorbing and removing nitrogen oxides Method of adsorbing and removing nitrogen oxides

1993-10-12

1995-07-25

Lander, Ferris

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232421, 95 92, 95129, C01B 2120

Patent

active

054359813

ABSTRACT:
Disclosed is a method of adsorbing and removing NOx, by washing with water a gas discharged by ventilation from highway tunnels in a washing tower as pretreatment, and then adsorbing NOx in the gas with a rotary NOx adsorption unit. The washed gas may be heated by a heater which is placed between the washing tower and the rotary NOx adsorption unit.

REFERENCES:
patent: 4181506 (1980-01-01), Bengtsson
patent: 5158582 (1992-10-01), Onitsuka et al.
European Patent Application; 0-540-428; May 5, 1993; Adsorbents for Removing low-concentration nitrogen oxides; Onitsuka et al.
Patent Abstract of Japan, vol. 16 No. 61 Feb. 17, 1990 JP-A-03,258,324 Watanabe et al.
Translation of '324 enclosed.
Patent Abstract of Japan, vol. 16, No. 61 (C-910) 17 Feb. 1992 of JP-A-03 258 324 (Kogai Kenko Higai Hoshiyou Yobou Kyokai) 18 Nov. 1991.

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