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Method for operating air separation plant having distillation column system, heat exchanger and adsorber, and air separation plant

A technology of heat exchanger and air separation, which is applied to the corresponding air separation equipment, even if it is stopped for a long time, the "main heat exchanger" is characterized in the field and can solve problems such as damage

Pending Publication Date: 2022-07-08
ลินเดอ จีเอ็มบีเอช (นิติบุคคลจัดตั้งขึ้นตามกฎหมายแห่งสหพันธ์สาธารณรัฐเยอรมนี)
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  • Abstract
  • Description
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Problems solved by technology

This leads to the already stated material stresses and, where appropriate, to long-term damage

Method used

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  • Method for operating air separation plant having distillation column system, heat exchanger and adsorber, and air separation plant
  • Method for operating air separation plant having distillation column system, heat exchanger and adsorber, and air separation plant
  • Method for operating air separation plant having distillation column system, heat exchanger and adsorber, and air separation plant

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Effect test

Embodiment Construction

[0054] figure 1 In the form of a temperature diagram, the temperature profile of the heat exchanger after a shutdown without the use of the measures according to an advantageous embodiment of the invention is shown.

[0055] exist figure 1 In the figures shown, the temperature at the hot end, marked with H, and the temperature at the cold side, marked with C, of ​​the corresponding heat exchanger are each shown in °C on the ordinate, while the temperature at the cold end, marked with C, is shown on the abscissa. time in hours.

[0056] like figure 1 As seen in the outage, the temperature H at the hot end of the heat exchanger at the beginning of the shutdown is about +20°C, which also corresponds to the temperature at which the heat exchanger operates normally, and the temperature C at the cold end is about -175°C °C. As time increases, these temperatures equilibrate with each other. The high thermal conductivity of the materials used in heat exchangers is the reason for ...

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Abstract

The invention relates to a method for operating an air separation plant (100) having a distillation column system (110), a heat exchanger (1) and an adsorber (103), in which a first operating mode is carried out in a first time period and a second operating mode is carried out in a second time period following the first time period. According to the invention, a third operating mode is carried out in a third time period between the second time period and the first time period, in which third operating mode water and carbon dioxide are at least partially removed from the compressed air in the adsorber (103) and at least partially cooled in the heat exchanger (1), an air product is extracted from the distillation column system (110) and is at least partially heated in the heat exchanger (1), a settable portion of the compressed air cooled in the heat exchanger (1) or a settable amount of the other compressed air which is at least partially removed from water and carbon dioxide in the adsorber (103) but not cooled in the heat exchanger (1) is fed to the air product. The air product is then heated in the heat exchanger (1). The subject of the invention also relates to a corresponding air separation plant (100).

Description

[0001] The present invention relates to a method for operating an air separation plant with a distillation column system adapted for cryogenic rectification, with a heat exchanger and with an adsorber, and a method according to the preambles of the respective independent claims Corresponding air separation equipment. Background technique [0002] The production of liquid or gaseous air products by cryogenic separation of air in air separation plants is known and described, for example, in Wiley-VCH Publishing Company 2006 by H.-W. The book "Industrial GasesProcessing", edited and published, is described in particular in chapter 2.2.5 "Cryogenic Rectification". Further details of corresponding methods and apparatuses specifically related to the present invention will continue to be set forth below. [0003] In many fields of application, including the production of air products in air separation plants, heat exchangers (technically more correctly called: heat carriers) utiliz...

Claims

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Application Information

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IPC IPC(8): F25J1/00
CPCF25J3/04412F25J2280/20F25J3/04787F25J3/0409F25J3/04678F25J3/04296F25J3/04187F25J3/04727F25J2245/40F25J3/04818Y02C20/40
Inventor 斯特凡·洛克纳R·斯波里克里斯多夫·温德梅尔帕斯卡尔·弗雷科A·奥贝梅尔
Owner ลินเดอ จีเอ็มบีเอช (นิติบุคคลจัดตั้งขึ้นตามกฎหมายแห่งสหพันธ์สาธารณรัฐเยอรมนี)
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