초록 ▼

Disclosed are an improved method and apparatus employing at least one immobilized liquid membrane separated from a liquid sweep by a gas-permeable barrier for removing a gaseous component from a gaseous mixture. The improvements include use of one or more liquid-filled passages extending through the

Disclosed are an improved method and apparatus employing at least one immobilized liquid membrane separated from a liquid sweep by a gas-permeable barrier for removing a gaseous component from a gaseous mixture. The improvements include use of one or more liquid-filled passages extending through the gas-permeable barrier to effect diffusive transfer of active carrier species from the liquid sweep into the membrane, thereby maintaining the separation efficiency of each membrane. In a preferred embodiment, the improvements are applied to removal of hydrogen sulfide from mixtures thereof with carbon dioxide as found in gasified coal.

대표청구항 ▼

In a method for removing a gaseous component from a gaseous mixture comprising: contacting said mixture with an immobilized liquid membrane containing in the liquid thereof at least one carrier species which is reversibly chemically reactive with said component to effect facilitated transport of sai

In a method for removing a gaseous component from a gaseous mixture comprising: contacting said mixture with an immobilized liquid membrane containing in the liquid thereof at least one carrier species which is reversibly chemically reactive with said component to effect facilitated transport of said component through said membrane to a gas-permeable barrier which is substantially impervious to said liquid; passing the gases emerging from said membrane through said gas-permeable barrier; and absorbing in a sweep liquid the gases emerging from said gas-permeable barrier; the improvement for substantially maintaining the separation efficiency of said membrane; comprising: said sweep liquid containing a quantity of said carrier species; and said sweep liquid being contacted with said immobilized liquid membrane through a discrete passage extending transversely through said barrier, to effect diffusive transfer of at least a portion of said reactive species from said sweep liquid into the liquid immobilized in said membrane.