公开(公告)号：US20240183610A1

公开(公告)日：2024-06-06

申请号：US18554396

申请日：2022-03-10

Applicant: LINDE GMBH

Inventor： Dimitri GOLUBEV ,  Xiaohua FAN

IPC: F25J3/04

CPC classification number: F25J3/04393 ,  F25J3/04054 ,  F25J3/0423 ,  F25J3/04236 ,  F25J3/04315 ,  F25J3/04321 ,  F25J3/0443 ,  F25J3/0486 ,  F25J2200/20 ,  F25J2210/42 ,  F25J2215/56 ,  F25J2240/04 ,  F25J2245/02 ,  F25J2245/42 ,  F25J2250/02 ,  F25J2250/20 ,  F25J2270/02

Abstract: A SPECTRA process for low-temperature fractionation of air is proposed, in which bottoms liquid from an additional second rectification column used to obtain oxygen is evaporated in a second condenser evaporator arrangement. In this second condenser evaporator arrangement, gas that has been evaporated beforehand in a first condenser evaporator arrangement, which is used for condensation of tops gas from a first rectification column, is partially condensed after recompression. The invention also relates to a corresponding plant.