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Energy-saving system and method based on air separation system

A technology of air separation system and energy-saving system, which is applied in the field of energy-saving system based on air separation system, can solve problems such as insufficient energy utilization, and achieve the effect of saving energy and reducing energy consumption in operation

Inactive Publication Date: 2020-09-11
陕西秦风气体股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to solve the technical problem of insufficient energy utilization in existing air separation systems using lithium bromide units, and to provide an energy-saving system and method based on air separation systems

Method used

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  • Energy-saving system and method based on air separation system
  • Energy-saving system and method based on air separation system
  • Energy-saving system and method based on air separation system

Examples

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Effect test

Embodiment 1

[0032] An energy-saving system based on an air separation system, comprising an air separation system lithium bromide unit 1, an air cooling tower 2, a water bath vaporizer 3, a rainwater recovery tank 4, a liquid gas storage tank 6 and a gas compressor 7.

[0033] The heat source inlet of the lithium bromide unit 1 of the air separation system is connected with the steam turbine, air compressor, nitrogen compressor and argon compressor in the air separation system unit 9 at the same time, and the cooling heat of the steam turbine, the interstage compression heat of the air compressor, and the nitrogen compressor The interstage compression heat of the argon compressor and the interstage compression heat of the argon compressor are used as the external heat energy of the lithium bromide unit 1 of the air separation system.

[0034] The external heat energy is cooled by the lithium bromide unit 1 of the air separation system to form steam condensate, which is transported to the w...

Embodiment 2

[0037] An energy-saving system based on an air separation system, comprising an air separation system lithium bromide unit 1, an air cooling tower 2, a water bath vaporizer 3, a rainwater recovery tank 4, a liquid gas storage tank 6 and a gas compressor 7.

[0038] The heat source inlet of the lithium bromide unit 1 of the air separation system is connected with the by-product steam of the steelworks (10) as the external heat energy of the lithium bromide unit 1 of the air separation system.

[0039] The external heat energy is cooled by the lithium bromide unit 1 of the air separation system to form steam condensate, which is transported to the water-bath vaporizer 3 as its heat medium, exchanges heat with the liquid argon in the water-bath vaporizer 3, and then enters the rainwater recovery tank 4. The rainwater recovery tank 4 and The external circulating water system 5 is connected. The liquid argon is converted into a gaseous state after heat exchange with steam condensed...

Embodiment 3

[0042] An energy-saving system based on an air separation system, comprising an air separation system lithium bromide unit 1, an air cooling tower 2, a water bath vaporizer 3, a rainwater recovery tank 4, a liquid gas storage tank 6 and a gas compressor 7.

[0043] The heat source inlet of the lithium bromide unit 1 of the air separation system is connected with the steam turbine, air compressor, nitrogen compressor, argon compressor in the air separation system unit 9, and the steel plant 10 at the same time, and the cooling heat of the steam turbine, the stage of the air compressor The interstage compression heat, the interstage compression heat of the nitrogen compressor, the interstage compression heat of the argon compressor, and the by-product steam of the steel plant 10 are used as the external heat energy of the lithium bromide unit 1 of the air separation system.

[0044] The external heat energy is cooled by the lithium bromide unit 1 of the air separation system to f...

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Abstract

The invention belongs to energy-saving systems and methods, aims to solve the technical problem of insufficient energy utilization due to the fact that a lithium bromide unit is used in an existing air separation system, and provides an energy-saving system and method based on an air separation system. The energy-saving system comprises an air separation system lithium bromide unit, an air coolingtower, a water bath type vaporizer and a rainwater recycling pool, wherein a heat source inlet of the air separation system lithium bromide unit is connected with external heat energy, the external heat energy is cooled by the air separation system lithium bromide unit to form steam condensate, the steam condensate is conveyed to the water bath type vaporizer to serve as a heat medium of the water bath type vaporizer, exchanges heat with low-temperature liquid gas in the water bath type vaporizer and then enters the rainwater recycling pool, the rainwater recycling pool communicates with an external circulating water system, chilled water generated by the air separation system lithium bromide unit is conveyed to the air cooling tower to serve as a cooling medium of the air cooling tower,and after heat exchange, the chilled water is conveyed back to the air separation system lithium bromide unit to serve as a supplemented circulating water medium. According to the energy-saving method, energy is utilized on the basis of the energy-saving system.

Description

technical field [0001] The invention belongs to an energy-saving system and method, in particular to an energy-saving system and method based on an air separation system. Background technique [0002] As a new energy-driven refrigeration unit, lithium bromide units are more and more favored by the air separation industry for their high efficiency, stability, environmental protection and safety. However, due to its single use, there is still the problem of insufficient energy utilization. Therefore, how to rationally allocate waste heat resources, and make full use of the compression heat of the project compressor, further use the hot water obtained after heat exchange, and finally realize resource utilization. Full utilization and integration to achieve full utilization and redistribution of air separation unit energy is still a difficult point in the application of lithium bromide units in the air separation industry. Contents of the invention [0003] The main purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B15/06F28C1/00F24H7/02E03F5/10
CPCE03F5/10F24H7/02F25B15/06F28C1/00Y02B30/62Y02A30/27
Inventor 武文朱远远李晓风林国彬杨勇章磊苏伟
Owner 陕西秦风气体股份有限公司
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