公开(公告)号：US20220252345A1

公开(公告)日：2022-08-11

申请号：US17594096

申请日：2020-03-27

Applicant: LINDE GMBH

Inventor： Stefan LOCHNER ,  Ralph SPÖRI ,  Reinhold HÖLZL ,  Axel LEHMACHER ,  Alexander WOITALKA ,  Sven SCHAUDER

IPC: F25J3/04 ,  F25J1/00 ,  F25J1/02

Abstract: A method for operating a heat exchanger, in which a first operating mode is carried out in first time periods, and a second operating mode is carried out in second time periods that alternate with the first time periods; in the first operating mode a first fluid flow is formed at a first temperature, is fed into the heat exchanger in a first region at the first temperature, and is partially or completely cooled in the heat exchanger; in the first operating mode a second fluid flow is formed at a second temperature, is fed into the heat exchanger in a second region at the second temperature, and is partially or completely heated in the heat exchanger; and in the second operating mode the feeding of the first fluid flow and of the second fluid flow into the heat exchanger is partially or completely halted.

公开(公告)号：US20250052493A1

公开(公告)日：2025-02-13

申请号：US18718242

申请日：2022-11-17

Applicant: Linde GmbH

Inventor： Thomas HECHT ,  Ralph SPÖRI ,  Axel LEHMACHER ,  Thomas NOHLEN ,  Dimitri GOLUBEV ,  Paul HEINZ ,  Florian HANUSCH

IPC: F25J3/04

Abstract: A method for the cryogenic separation of air, in which method an air separation plant with a rectification column arrangement is used, which plant has a pressure column, a low-pressure column, a raw argon column and pure argon column. In the method, evaporation gas from a head gas condensation device associated with the raw argon column is partially or completely fed into the low-pressure column in a first feed-in region, whereas evaporation gas from a head gas condensation device associated with the pure argon column and excess liquid from this head gas condensation device are partially or completely fed into the low-pressure column in a shared second feed-in region. In one embodiment, flash gas forming during the expansion of cooling fluid into the head gas condensation device associated with the raw argon column can be partially or completely fed into the low-pressure column in the second feed-in region.

公开(公告)号：US20220316811A1

公开(公告)日：2022-10-06

申请号：US17596999

申请日：2020-08-18

Applicant: Linde GmbH

Inventor： Stefan LOCHNER ,  Ralph SPÖRI ,  Axel LEHMACHER ,  Pascal FREKO ,  Paul HEINZ ,  Felix RÖßLER

IPC: F28D21/00 ,  F25J1/00 ,  F25J1/02 ,  F25J3/04

Abstract: A method for operating a heat exchanger, in which a first operating mode is carried out in first time periods, and a second operating mode is carried out in second time periods that alternate with the first time periods; in the first operating mode a first fluid flow is formed at a first temperature level, is fed into the heat exchanger in a first region at the first temperature level, and is partially or completely cooled in the heat exchanger; in the first operating mode a second fluid flow is formed at a second temperature level, is fed into the heat exchanger in a second region at the second temperature level, and is partially or completely heated in the heat exchanger. A corresponding arrangement and a system with such an arrangement are also covered by the present invention.