Back to results
US 4,444,571 AGranted
Energy-efficient process for the stripping of gases from liquids
AssigneeBend Research, Inc.
InventorStephen L. Matson
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeBend Research, Inc.
InventorStephen L. Matson
Estimating the term…
A process is disclosed for the recovery and reuse of the heat contained in the gas/vapor overhead mixture from a stripping column in which a noncondensable gas is stripped from a liquid solution by contacting the solution with a hot vapor such as steam. The steam or other vapor in the overhead mixture is separated from the non-condensable gas or gases by preferentially passing the vapor through a semipermeable membrane. The water or other condensable vapor is then compressed and either reinjected at the bottom of the stripping column or condensed in the column reboiler, thus permitting its reuse in the stripping process. If the compressed vapor is reinjected into the stripping column, it serves as the stripping medium itself. If the compessed vapor is condensed in the column reboiler, its latent heat of vaporization is thereby recovered and used to generate the required stripping vapor by boiling the solution being stripped.
In a process for stripping noncondensable or high-vapor-pressure gases from a liquid by contacting said liquid with a stripping vapor and thereby producing an overhead mixture of gas and stripping vapor, the improvement comprising:
In a process for stripping noncondensable or high-vapor-pressure gases from a liquid by contacting said liquid with a stripping vapor and thereby producing an overhead mixture of gas and stripping vapor, said process being conducted in a stripping column with a base, the improvement comprising:
In a process for the purification of gases utilizing selective absorption of one or more gaseous components dissolved in a liquid absorbent solution followed by regeneration of the spent liquid absorbent solution in a steam or vapor stripping operation producing an overhead mixture of stripped gas and stripping vapor, the improvement comprising:
In a process for the purification of gases utilizing selective absorption of one or more gaseous components dissolved in a liquid absorbent solution followed by regeneration of the spent liquid absorbent solution in a steam or vapor stripping operation producing an overhead mixture of stripped gas and stripping vapor, said process being conducted in a stripping column with a base, the improvement comprising:
In a process for stripping high-vapor-pressure contaminants from an aqueous process stream by contacting said aqueous process stream with a condensable stripping vapor and thereby producing an overhead mixture of gas and stripping vapor, the improvement comprising:
In a process for stripping high-vapor-pressure contaminants from an aqueous process stream by contacting said aqueous process stream with a condensable stripping vapor and thereby producing an overhead mixture of gas and stripping vapor, said process being conducted in a stripping column with a base, the improvement comprising:
Dependencies are inferred from the claim text.