초록 ▼

In a membrane apparatus for separating a gas mixture, permeate gas is withdrawn from the vessel housing the membranes along passages whose extent along the flow path of the nonpermeate gas is only a fraction of the extent of such flow path. Thus, the gas mixture to be separated may be passed along t

In a membrane apparatus for separating a gas mixture, permeate gas is withdrawn from the vessel housing the membranes along passages whose extent along the flow path of the nonpermeate gas is only a fraction of the extent of such flow path. Thus, the gas mixture to be separated may be passed along the insides of a multiplicity of hollow fibres 8 whose walls are of a suitable membrane and cells 18 for the withdrawal of the permeate gas are defined by partitions 16 extending transversely to the fibres 8. Alternatively, an open-pored foamed plastics may be used instead of the partitions 16, or the gas may pass outside the fibres which are arranged transversely to the general direction of gas flow through the vessel, the permeate gas being withdrawn along the inside of each hollow fibre.

대표청구항 ▼

A method of separating a gas mixture in a vessel housing a multiplicity of semi-permeable membranes, including the steps of passing the mixture from an inlet to an outlet of the vessel along a flow path longitudinally in contact with the membranes, whereby one component of the gas mixture diffuses m

A method of separating a gas mixture in a vessel housing a multiplicity of semi-permeable membranes, including the steps of passing the mixture from an inlet to an outlet of the vessel along a flow path longitudinally in contact with the membranes, whereby one component of the gas mixture diffuses more rapidly through the membranes than another or the other component of the gas mixture, the gas mixture thus being enriched in said other component, and withdrawing permeate gas in a plurality of streams along separate passages, wherein said passages are defined by means which limit the extent of flow of permeate gas in each passage longitudinally off the said flow path to a fraction of the extent of the said flow path. Apparatus for separating a gas mixture comprising a vessel housing a multiplicity of semi-permeable membranes and having an inlet for the gas mixture communicating with an outlet of the vessel along a flow path longitudinally in contact with the membranes whereby in operation one component of the gas mixture diffuses more rapidly through the membranes than another or the other component of the gas mixture, the gas mixture thus being enriched in the said other component, wherein separate passages are defined in the vessel for withdrawal of permeate gas in a plurality of streams, said passages being defined by means which limit the extent of flow of permeate gas in each passage longitudinally of said flow path to only a fraction of the extent of said flow path.