EP 0770667 B1 20000823 - Drying process for gases making use of glycol including the separation of gaseous effluents
Title (en)
Drying process for gases making use of glycol including the separation of gaseous effluents
Title (de)
Verfahren zur Trocknung von Gasen mittels Glycol mit anschliessender Raffinierung von gasförmigen Abflüssen
Title (fr)
Procédé de séchage de gaz au glycol incluant la purification des rejets gazeux
Publication
Application
Priority
FR 9512689 A 19951027
Abstract (en)
[origin: EP0770667A1] A process for dehydrating natural gas or refinery gas, contg. methane and other light alkanes, BTEX (benzene, toluene, ethyl benzene and xylene), water and opt. CO2, N2 and/or H2S, using a liq. desiccant, comprises: (a) absorbing water and BTEX by contact with regenerated liq. desiccant (from step (c)) to produce a dry gas stream and a loaded liq. desiccant stream; (b) separating the loaded liq. desiccant into a vapour phase, mainly contg. methane, steam and part of the BTEX, and a liq. phase mainly contg. the desiccant loaded with water and BTEX; (c) regenerating the liq. desiccant in reboiling and distillation zones, in which the distillation zone produces a vapour phase, contg. steam and BTEX, and the regenerated liq. desiccant returning to step (a); (d) condensing the vapour phase from the distillation zone, and separating the three phases, i.e. a BTEX-contg. gas stream, a BTEX-contg. liq. hydrocarbon phase and a liq. aq. phase; and (e) treating at least the BTEX-contg. gas stream in a scrubbing zone by absorbing the BTEX in a withdrawn regenerated liq. desiccant fraction and passing the BTEX-loaded desiccant to a point in the regeneration zone of step (b), the gas stream leaving the scrubbing zone being free from BTEX.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Designated contracting state (EPC)
DE DK FR GB IT NL
DOCDB simple family (publication)
EP 0770667 A1 19970502; EP 0770667 B1 20000823; CA 2188825 A1 19970428; CA 2188825 C 20060103; DE 69609922 D1 20000928; DE 69609922 T2 20001228; DK 0770667 T3 20001113; FR 2740468 A1 19970430; FR 2740468 B1 19971212; NO 315566 B1 20030922; NO 964540 D0 19961025; NO 964540 L 19970428; US 6004380 A 19991221
DOCDB simple family (application)
EP 96402157 A 19961010; CA 2188825 A 19961024; DE 69609922 T 19961010; DK 96402157 T 19961010; FR 9512689 A 19951027; NO 964540 A 19961025; US 73869096 A 19961028