Ethylene recovery system in methanol-to-olefin device

The utility model belongs to the technical field of methanol-to-olefin, and discloses an ethylene recovery system in a methanol-to-olefin device, which comprises a dethanizing tower, a demethanizing tower and an ethylene recovery tower, and the tower kettle liquid outlet of the ethylene recovery tow...

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Bibliographische Detailangaben
Hauptverfasser:	YUAN PENGHUI, YANG BINGLEI, ZHENG QINGYANG, XU HUI, LIU JIANJIN, ZHANG FEI, XIN LIBO, YU JUNLIANG, ZHANG PISHENG, ZHANG YOUDONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The utility model belongs to the technical field of methanol-to-olefin, and discloses an ethylene recovery system in a methanol-to-olefin device, which comprises a dethanizing tower, a demethanizing tower and an ethylene recovery tower, and the tower kettle liquid outlet of the ethylene recovery tower is connected with the reflux liquid inlet of the dethanizing tower through a tower kettle pump; a tower top methane hydrogen tail gas outlet of the ethylene recovery tower is connected with a cold source inlet of the 1 # washing liquid cooler, a middle circulating liquid outlet of the ethylene recovery tower is connected with an inlet of the circulating pump, an outlet of the circulating pump is connected with a heat source inlet of the circulating liquid cooler, and a heat source outlet of the circulating liquid cooler is connected with a middle circulating liquid inlet of the ethylene recovery tower. According to the utility model, a stream of washing liquid is led out from the middle part of the ethylene reco