초록 ▼

The present invention provides a process for separating a condensable gas from a non-condensable gas by switching at least three adsorber beds which preferentially adsorb the condensable gas serially through the following steps: (a) an adsorption step in which a mixture of the condensable and non-co

The present invention provides a process for separating a condensable gas from a non-condensable gas by switching at least three adsorber beds which preferentially adsorb the condensable gas serially through the following steps: (a) an adsorption step in which a mixture of the condensable and non-condensable gases are passed through the bed and the separated non-condensable gas is withdrawn therefrom; (b) a supercharging step in which a stream relatively rich in the condensable gas is passed through the bed, the stream having an actual volume at least three times that necessary to displace a void volume of the bed; (c) a desorption step in which a vacuum is drawn on the bed and an amount of a non-condensable gas is bled through the bed; and wherein the non-condensable gas in conjunction with entrained condensable gas from step (c) is passed into a vacuum pump, is compressed, at least some of the condensable gas is condensed and at least part of the non-condensable gas and remaining condensable gas is the passed to step (b) as the stream relatively rich in the condensable gas; and such that continuous operation of the process with at least one of the beds in the adsorption step is permitted. In an example 1,1,1-trichloroethane is separated from air.

대표청구항 ▼

A process for separating a condensable gas from a non-condensable gas comprising switching at least three adsorber beds which preferentially adsorb the condensable gas serially through the following steps: (a) an adsorption step in which a mixture of the condensable and non-condensable gases are pas

A process for separating a condensable gas from a non-condensable gas comprising switching at least three adsorber beds which preferentially adsorb the condensable gas serially through the following steps: (a) an adsorption step in which a mixture of the condensable and non-condensable gases are passed through the bed and the separated non-condensable gas is withdrawn therefrom; (b) a supercharging step in which a stream relatively rich in the condensable gas is passed through the bed, said stream having an actual volume at least three times that necessary to displace a void volume of the bed and wherein a pressure in the bed undergoing step (b) is elevated over that in the bed undergoing step (a); (c) a desorption step in which a vacuum is drawn on the bed and an amount of non-condensable gas is bled through the bed; and wherein said non-consensable gas in conjunction with entrained condensable gas from step (c) is passed into a vacuum pump, is compressed, at least some of the condensable gas is condensed and at least part of the non-condensable gas and remaining condensable gas is then passed to step (b) as the stream relatively rich in the condensable gas; and such that continuous operation of the process with at least one of the beds in the adsorption step is permitted.