Device for separating gas components from a gas stream with variable composition or flow rate

摘要

a gas flow separation device (1), comprising a first gas component and a second gas component, comprising a first membrane run unit (2);which absorbs the gas flow via a feed -in line (3),where the first membrane racing unit has a higher permeability gas membrane for the first gas component than for the second gas component and a first permeate current,which is enriched with the first gas component and provides an initial inertial current;(b) a first permeate line (4),which is connected to the first membrane racing unit (2) to receive the first permeate current;(c) a first retinal line (5),which is connected to the first membrane racing unit (2) for recording the first retinal current;(d) a second membrane racing unit (6),which is connected to the first return line (5) to receive the first return current as an operating current,where the second membrane racing unit (6) has a gas chamber membrane with a higher permeability for the first gas component than for the second gas component and a second retardant current and twot Permeatcurrent provides a second retinal line (7),which is connected to the second membrane racing unit (6) for recording the second retinal current;(f) a second permeate line (8),which is connected to the second membrane racing unit (6) to receive the second permeate current;(g) a third membrane racing unit (9),which is connected to the second retractor line (7) to receive the second retractable current as an operating current,where the third membrane racing unit (9) has a gas chamber membrane with a higher permeability for the first gas component than for the second gas component and a third retardant current and a thirdt Permeatcurrent provides a product line (10) connected to the third membrane unit (9) for recording the third retinal current;(i) a first return line (11),which is connected to the third diaphragm unit (9) to receive the third permeate current and is connected to a first feedback point (12) at the feed line (3);(j) a gas compressor (13),which is located in the first feed -in line (3) between the first feed -back point (12) and the first membrane run -in unit (2) or in the first feed -back line (11);a second feedback line (14) connected to a second feedback point (15) at the feedback line (3) or at the first feedback line (11),where the second feedback point (15) is upstream of the gas compressor (13) and the second feedback line (14) with the second permeate line (8) is locatedis connected to part or all of the second permeate current; and (I) a control device (16),regulates the portion of the second permeate current supplied to the second return line (14) and adds the rest of the second permeate current to an outlet line (17).