Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1976-03-05
1976-10-05
Hart, Charles N.
Gas separation
Means within gas stream for conducting concentrate to collector
55 71, 55 74, 252420, B01D 5304
Patent
active
039842185
ABSTRACT:
Vinyl chloride is removed from gas streams that contain from 10 ppm to 100 mole percent of vinyl chloride by passing the gas stream through a bed of coconut shell-derived or petroleum-derived activated carbon. The exit gas stream contains less than 5 ppm of vinyl chloride.
The vinyl chloride-saturated carbon is treated with steam at 100.degree.-150.degree.C. to desorb the vinyl chloride, which is then recovered. The wet carbon is contacted with an inert gas at 90.degree.-150.degree.C. until its water content is less than 1% by weight; the hot dry carbon is cooled to ambient temperature by contacting it with a cold inert gas. The regenerated activated carbon is then used to remove additional vinyl chloride from the gas stream.
The vinyl chloride adsorption-carbon regeneration cycle can be repeated for long periods of time without loss of adsorptive capacity of the activated carbon or formation of polyvinyl chloride on the surface of the carbon.
REFERENCES:
patent: 1616073 (1927-02-01), Arentz
patent: 1619326 (1927-03-01), Backhaus
patent: 1619327 (1927-03-01), Backhaus
patent: 2933454 (1960-04-01), Repik et al.
Hourihan Edward J.
Patel Piyush J.
Stutts Carl S.
Thompson Clay G.
Berlow Evelyn
Hart Charles N.
Spitzer Robert H.
Tenneco Chemicals Inc.
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