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Method for operating a heat exchanger, arrangement with a heat exchanger, and equipment with a corresponding arrangement

A technology of heat exchanger, mode of operation, applied to and through the separation of plates and other components of equipment, the term used is a kind of equipment, and then transports hot fluid to the field of heat exchanger, which can solve the problem of damage, etc.

Pending Publication Date: 2022-01-21
ลินเดอ จีเอ็มบีเอช (นิติบุคคลจัดตั้งขึ้นตามกฎหมายแห่งสหพันธ์สาธารณรัฐเยอรมนี)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to the aforementioned material stresses and thus, where appropriate, damage

Method used

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  • Method for operating a heat exchanger, arrangement with a heat exchanger, and equipment with a corresponding arrangement
  • Method for operating a heat exchanger, arrangement with a heat exchanger, and equipment with a corresponding arrangement
  • Method for operating a heat exchanger, arrangement with a heat exchanger, and equipment with a corresponding arrangement

Examples

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Embodiment Construction

[0085] figure 1 The temperature profile of the heat exchanger after shutdown (without flow through) is shown in the form of a temperature diagram without the use of the measures according to an advantageous embodiment of the invention.

[0086] exist figure 1 In the graph shown, the temperature at the hot end of the corresponding heat exchanger marked with H and the temperature at the cold end marked with C are shown in ° C on the ordinate, respectively, while the temperature at the cold end marked with C is shown on the abscissa in °C. The time in hours.

[0087] Such as figure 1 As seen in , the temperature H at the hot end of the heat exchanger at the start of the shutdown is about 20°C, which also corresponds to the temperature at which the heat exchanger is normally operating, and the temperature C at the cold end is about -175°C . With increasing time, these temperatures equilibrate with each other. The reason for this is the high thermal conductivity of the materia...

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Abstract

The invention relates to a method for operating a heat exchanger (1), 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 (A) is formed at a first temperature level, is fed into the heat exchanger (1) in a first region (2) at the first temperature level, and is partially or completely cooled in the heat exchanger (1); in the first operating mode a second fluid flow (B) is formed at a second temperature level, is fed into the heat exchanger (1) in a second region (3) at the second temperature level, and is partially or completely heated in the heat exchanger (1); and in the second operating mode the feeding of the first fluid flow (A) and of the second fluid flow (B) into the heat exchanger (1) is partially or completely halted. In the second time period the second region (12) is cooled by using cooling fluid that is conducted through passages in or on the heat exchanger (1) in the second region (12) but not in the first region (11) which comprises the terminal 30% at the warm end of the heat exchanger (1). A corresponding arrangement (10) and equipment (100) with such an arrangement (10) are also covered by the present invention.

Description

[0001] The invention relates to a method for operating a heat exchanger, an assembly with a correspondingly operable heat exchanger and an apparatus with a corresponding assembly according to the preambles of the respective independent claims. Background technique [0002] In several fields of application, heat exchangers are operated with cryogenic fluids, i.e. fluids with a temperature well below 0°C, especially well below –50°C or –100°C (German: )(A more technically correct term is: heat transfer device (German: übertrager)). In the following, the invention is mainly described with reference to the main heat exchanger of an air separation plant, however the invention is also suitable in principle for use in other fields of application, for example in plants for the storage and recovery of energy using liquid air or in the liquefaction of natural gas or in the petrochemical industry device of. [0003] For the reasons explained below, the invention is also suitable in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D21/00F28F27/00F25J3/04F25J5/00
CPCF28D21/00F28F27/00F25J5/00F25J3/04054F25J3/04115F25J3/04242F25J3/04727F28D2021/0033F25J2215/42F25J2215/58F25J1/0012F25J1/0248F25J1/0251F25J3/04296F25J3/04412F25J3/04478F25J3/04678F25J3/04787F25J3/04945F25J5/002F25J2245/90F25J2290/32F25J2290/62F25J1/0015F25J1/0261F25J3/0409F25J2280/20F25J2250/02F25J3/04187F25J3/04824
Inventor 斯特凡·洛克纳R·斯波里阿克塞尔·莱马赫帕斯卡尔·弗雷科保罗·海因茨F·罗斯勒
Owner ลินเดอ จีเอ็มบีเอช (นิติบุคคลจัดตั้งขึ้นตามกฎหมายแห่งสหพันธ์สาธารณรัฐเยอรมนี)
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