Removal of hydrogen sulfide from air streams

Details Removal of hydrogen sulfide from air streams Removal of hydrogen sulfide from air streams

1986-01-15

1986-10-07

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 74, 423230, B01D 5304

Patent

active

046157140

ABSTRACT:
In a process for removing hydrogen sulfide from an oxygen-containing gas stream by passing said gas stream through activated carbon, said stream containing from about 5 ppm to about 10,000 ppm by volume, which comprises adding ammonia to said stream prior to its passage through the carbon, improvement in which the amount of added ammonia is such that its concentration will be at least equal to the concentration of the hydrogen sulfide and not greater than 10,000 ppm with the proviso that when the concentration of hydrogen sulfide exceeds 4,000 ppm by volume, the concentration of the ammonia will not be greater than 6,000 ppm by volume.

REFERENCES:
patent: 4072479 (1978-02-01), Sinha et al.
patent: 4212852 (1980-07-01), Aibe et al.

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