Process for NOx and CO control

Details Process for NOx and CO control Process for NOx and CO control

1989-04-03

1990-12-25

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423247, B01J 800, C01B 2100, C01B 3118, C10K 120

Patent

active

049801376

ABSTRACT:
An improved process is described for reducing the levels of nitrogen oxides and carbon monoxide present in flue gases. The process consists of preparing a bed of expanded vermiculite, expanded perlite, or borosilicate glass wool and passing a flue gas containing nitrogen oxides and carbon monoxide through the bed, whereas the vermiculite, perlite, or glass wool making up the bed material serves as a catalyst for the reduction of the nitrogen oxides to gaseous nitrogen and oxygen and the reduction of carbon monoxide to carbon and oxygen, the carbon being deposited on the bed particles. After the deposition of carbon, the bed material is then exposed to an oxidizing gas stream, during which time the deposited carbon is converted to carbon dioxide and the bed material is conditioned to accept flue gas again.

REFERENCES:
patent: 3576596 (1971-04-01), Kranc et al.
patent: 4806320 (1989-02-01), Nelson

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