초록 ▼

A volatile component is recovered from an inert gas blanketed gas source containing the volatile component, an inert carrier gas, water vapor and oxygen as an impurity by a continuous process including the steps of adsorbing the water vapor from the stream, condensing substantially all of the volati

A volatile component is recovered from an inert gas blanketed gas source containing the volatile component, an inert carrier gas, water vapor and oxygen as an impurity by a continuous process including the steps of adsorbing the water vapor from the stream, condensing substantially all of the volatile component from the stream, heating the water vapor-free and volatile component-free gas stream, purging the adsorbers with the heated gas stream and venting the purge gas and desorbed moisture. Inert gas depleted from the source is replenished with oxygen-free inert gas, thereby minimizing the concentration of oxygen in the source.

대표청구항 ▼

A process for the recovery of a first gaseous component from a gas stream containing said first gaseous component, at least one inert gaseous component having a boiling point below the boiling point of said first gaseous component and at least one gaseous impurity having a freezing point above the f

A process for the recovery of a first gaseous component from a gas stream containing said first gaseous component, at least one inert gaseous component having a boiling point below the boiling point of said first gaseous component and at least one gaseous impurity having a freezing point above the freezing point of said first gaseous component, comprising the steps of: (a) flowing said gas stream through a first adsorption zone containing an adsorbent which preferentially adsorbs said at least one gaseous impurity thereby depleting the gas stream of said at least one gaseous impurity; (b) flowing the at least one gaseous impurity-depleted gas stream exiting said first adsorption zone through a heat transfer zone maintained at a temperature below the boiling point of said first gaseous component, thereby condensing first gaseous component from the gas stream and producing a gaseous effluent that is substantially depleted of said at least one gaseous impurity and said first gaseous component; (c) heating at least part of said gaseous effluent to a temperature above about 90°C.; (d) flowing the heated gaseous effluent through a second adsorption zone containing an adsorbent which preferentially adsorbs said at least one gaseous impurity and that contains as adsorbate said at least one gaseous impurity, thereby purging said at least one gaseous impurity from said second adsorption zone; (e) reversing the role of said first and second adsorption zones when the buildup of at said least one gaseous impurity in said first adsorption zone reaches a predetermined level, so that said at least one gaseous impurity undergoes adsorption in said second adsorption zone and desorption in said first adsorption zone; and (f) cyclically repeating steps (a) to (e), thereby continually recovering said first gaseous component from said gas stream.