초록 ▼

A separation process, involving an adsorber containing at least one adsorbent with an inlet and outflow, involves the following stages of the cycle:--stage I, repressurization from the low pressure of the cycle;--stages II and III during one of which the high pressure of the cycle is reached; and st

A separation process, involving an adsorber containing at least one adsorbent with an inlet and outflow, involves the following stages of the cycle:--stage I, repressurization from the low pressure of the cycle;--stages II and III during one of which the high pressure of the cycle is reached; and stage IV, depressurization/purging, during which the low pressure of the cycle is reached. Each stage (I to IV) involves a fixed gas flow (F) at one end of the adsorber and a free gas flow (.lambda.) at the other end of the adsorber, the fixed flows (F) addressing the inlet (E) and outlet (F) ends of the adsorber from one stage (I to IV) to the next. The process is particularly applicable to the production of oxygen from air.

대표청구항 ▼

[ We claim:] [1.] A method for the separation of a gaseous mixture by adsorption under pressure variation between a cycle high pressure and a cycle low pressure in an adsorption unit including at least one adsorber containing at least one adsorbent and having an inlet and an outlet, using a repetiti

[ We claim:] [1.] A method for the separation of a gaseous mixture by adsorption under pressure variation between a cycle high pressure and a cycle low pressure in an adsorption unit including at least one adsorber containing at least one adsorbent and having an inlet and an outlet, using a repetitive cycle consisting of the following sequential successive stages:stage I, repressurization from the low pressure of the cycle,stages II and III, during one of which the high pressure of the cycle is reached,stage IV, during which the low pressure of the cycle is reached, and including at least a sub-stage of depressurization and a subsequent sub-stage of purge/elutionwherein each stage (I to IV) involves a fixed gas flow at one end of the adsorber and a free gas flow at the other end of the adsorber, the fixed flows addressing, in alternation, the inlet and outlet of the adsorber from one stage (I to IV) to the next.