초록 ▼

A process for continuously separating the constituents of a mixture characterized in that it consists in introducing the gaseous mixture in an enclosure containing a selective adsorption agent or adsorbent, and subjecting the said mixture to a cyclical series of hot and cold steps induced by sudden

A process for continuously separating the constituents of a mixture characterized in that it consists in introducing the gaseous mixture in an enclosure containing a selective adsorption agent or adsorbent, and subjecting the said mixture to a cyclical series of hot and cold steps induced by sudden variations of temperature between a temperature Tc called the “hot temperature”and a temperature TF called the “cold temperature”in order to create in the cold steps three distinct zones moving in the flow-direction at different speeds: a zone of low-speed propagation comprising a sorption front in which the concentration of gas having the most adsorbable constituents decreases; a zone called the “thermal wave”induced at times determined by the sudden cooling of the load mixture; a desorption zone where the mixture is enriched in the most adsorbable constituents.

대표청구항 ▼

A process for the continuous separation of the constituents of a gaseous feed mixture which comprises introducing the gaseous feed mixture into an enclosure containing a selective adsorbent, and subjecting the mixture to a cyclical series of hot and cold stages by sudden variations in the feed tempe

A process for the continuous separation of the constituents of a gaseous feed mixture which comprises introducing the gaseous feed mixture into an enclosure containing a selective adsorbent, and subjecting the mixture to a cyclical series of hot and cold stages by sudden variations in the feed temperature between a hot temperature Tc and a cold temperature TF to create in the cold feed stage three successive distinct zones which move in the flow-direction at different speeds; (A) a first low speed zone of propagation comprising a sorption front in which the concentration of the most adsorbable constituents in the gas decreases; (B) a second zone called the “thermal wave”caused at times determined by the sudden cooling of the feed mixture to the cold temperature TF, in which the only constituents left are the least adsorbable ones, this wave propagating at a speed higher than that of the first zone and proportional to the ratio:specific heat of the non-adsorbable or least adsorbable gases/specific heat of the adsorbent; (C) a desorption zone the speed of whose propagation is higher than that of the preceding first and second zones, where the mixture is enriched in the most adsorbable constituents; the different effluent fractions or cuts being collected separately or recycled in the feed mixture.