Process for selective removal of a product from a gaseous system

摘要

A process for selective removal of a gaseous product (P) from a gaseous system comprising said product and other components (R1, R2), wherein the gaseous system is admitted to a first environment, which is separated from a second environment by a boundary wall, and a permeation membrane (3, 300) forms at least part of said boundary wall; a spatially non-uniform electric field (4) is generated between a first electrode or first plurality of electrodes (1, 301) located in the first environment and a second electrode or second plurality of electrodes (2, 302) located in the second environment, so that field lines of said non-uniform electric field cross said membrane, and a dielectrophoretic force generated on particles of said gaseous component (P) is at least part of a driving force of the permeation through said membrane, an amount of said product (P) being selectively removed from the first environment and collected in the second environment.

主权项

1. A process for selective removal of a gaseous product from a gaseous system comprising said product and other components the method comprising the steps of:
admitting the gaseous system to a first environment, which is separated from a second environment by a boundary wall, and a permeation membrane forms at least part of said boundary wall; and generating a spatially non-uniform electric field between a first electrode or first plurality of electrodes located in the first environment and a second electrode or second plurality of electrodes located in the second environment, so that field lines of said non-uniform electric field cross said membrane, and a dielectrophoretic force generated on particles of said gaseous product is a driving force of the permeation through said membrane, an amount of said product being selectively removed from the first environment and collected in the second environment, the particles of said product having a permanent electric dipole moment which is greater than the electric dipole moment of particles of other components of the gaseous system or the particles of said product having a polarizability which is greater than the polarizability of particles of other components of the gaseous system, so that electric dipole moment induced on the particles of said product by the non-uniform electric field is greater than the electric dipole moment induced by the same field on the other components of the system.