Method for the low-temperature decomposition of air and air separation plant

An air separation and air technology, applied in lighting and heating equipment, cold treatment separation, refrigeration and liquefaction, etc., can solve the problems of high cost and high investment cost of compression devices, and achieve good heat exchange effect

Inactive Publication Date: 2017-07-07
LINDE AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] But the corresponding MAC / BAC method is opposite to the HAP method, and its investment cost is higher due to the higher cost of the compression device

Method used

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  • Method for the low-temperature decomposition of air and air separation plant
  • Method for the low-temperature decomposition of air and air separation plant
  • Method for the low-temperature decomposition of air and air separation plant

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Embodiment Construction

[0045] figure 1 A particularly advantageous embodiment of an air separation plant according to the invention is shown in a schematic flow diagram and denoted by 100 .

[0046] The air separation plant 100 is fed a compressed air stream a by means of an air compression and purification unit 1, comprising a main air compressor and a suitable purification system, of which only schematically indicated. figure 1 The air separation plant shown is designed for the so-called HAP process. This means that the compressed air stream a is compressed to a pressure level of at least 4 to 20 bar higher than the pressure level of the high pressure column 11 of the distillation column system 10, the compressed air stream a comprising all of the distillation column system 10 fed to the air separation plant 100 Air.

[0047] The pressure level of stream a is referred to here as "initial pressure level" and the pressure level of high pressure column 11 as "high pressure column pressure level"....

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Abstract

The invention relates to a method for the low-temperature decomposition of air and an air separation plant (100) by means of a distillation column system (10). The distillation column system (10) is provided with a high pressure column (11) operated at a high pressure column pressure level and a low pressure column (12) operated at a low pressure column pressure level.The invention also relates to a related air separation plant (100).

Description

technical field [0001] The present invention relates to a process for the cryogenic separation of air in an air separation plant and an air separation plant for carrying out such a process. Background technique [0002] The production of liquid or gaseous air products by cryogenic separation of air in air separation plants is known, for example at H.-W. (Hrsg.), Industrial Gases Processing, Wiley-VCH, 2006, especially section 2.2.5 "Cryogenic Rectification". [0003] For a series of industrial uses of gaseous oxygen it is necessary to use air separation plants with so-called internal compression. Corresponding air separation plants are likewise described in the above citation and reference can be made to its appendix figure 2 .3A. In the corresponding air separation equipment, the pressure is applied to the ultra-low temperature liquid, especially the liquid oxygen at ultra-low temperature, and it evaporates relative to the heat conductor, and finally the gaseous product...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F25J3/04
CPCF25J3/04054F25J3/04412F25J3/04793F25J3/04951F25J2200/06F25J2210/40F25J3/0409F25J3/04175F25J3/04296F25J3/04303F25J3/04393F25J2205/04F25J2240/04
InventorT·劳滕施莱格
OwnerLINDE AG