EP 0019905 B1 19830105 - APPARATUS FOR THE SEPARATION OF A GAS MIXTURE BY RECTIFICATION
Title (en)
APPARATUS FOR THE SEPARATION OF A GAS MIXTURE BY RECTIFICATION
Publication
Application
Priority
DE 2922028 A 19790530
Abstract (en)
[origin: US4337070A] In the fractionation of a gaseous mixture, e.g., air, by rectification, wherein liquid in the sump of a rectifying column is heated and thereby partially vaporized; and simultaneously sump liquid is withdrawn from a lower zone of the sump liquid bath, and is recycled into the bath above the point of withdrawal, the improvement, prior to the recycle step, of passing the withdrawn sump liquid from the lower zone into a heat exchanger disposed in the sump, said heat exchanger having a substantially sealed bottom end at a level below the liquid level of the sump, and an open top end at a level higher than the liquid level of the sump; said withdrawn sump liquid being passed into the bottom end of said heat exchanger and partially vaporized therein, and removing resultant liquid-vapor mixture from the heat exchanger at the top end above the level of the liquid bath. This system provides pump-free circulation of the sump liquid and the use incorporates an on-line adsorber to remove deleterious impurities from the sump liquid, e.g., hydrocarbons from oxygen.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F25J 3/04412 (2013.01 - EP US); F25J 3/0486 (2013.01 - EP US); F25J 3/04884 (2013.01 - EP US); F25J 2205/60 (2013.01 - EP US); F25J 2245/50 (2013.01 - EP US); F25J 2250/02 (2013.01 - EP US); F25J 2250/20 (2013.01 - EP US); Y10S 62/903 (2013.01 - EP US); Y10S 62/908 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0019905 A1 19801210; EP 0019905 B1 19830105; AT E2178 T1 19830115; AU 535021 B2 19840301; AU 5864580 A 19801204; BR 8003260 A 19801230; DE 2922028 A1 19801211; DE 3061536 D1 19830210; IN 153137 B 19840602; US 4337070 A 19820629; ZA 803204 B 19810527
DOCDB simple family (application)
EP 80102953 A 19800527; AT 80102953 T 19800527; AU 5864580 A 19800522; BR 8003260 A 19800526; DE 2922028 A 19790530; DE 3061536 T 19800527; IN 968CA1980 A 19800823; US 15467680 A 19800530; ZA 803204 A 19800529