Air compression method and system with self-precooling function

A technology of compressed air and self-precooling, applied in the field of compressed air, can solve the problem of high temperature of inhaled air, and achieve the effect of reducing moisture content, saving electric energy and prolonging working life.

Active Publication Date: 2014-10-15
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the traditional air compressor unit, the present invention can not only effectively recover and utilize inter-stage heat

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  • Air compression method and system with self-precooling function

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be noted that the following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.

[0047] Such as figure 1 Shown, this embodiment is a medium-scale air compressor unit. The exhaust pressure of the device is 8.1MPa, and the gas production is 1000Nm 3 / h.

[0048] The device is composed of three parts: the air circuit subsystem of the compressor unit, the liquid circuit subsystem of the compressor unit and the absorption refrigerating machine subsystem. The main function of the compressor air circuit subsystem is to pre-cool the air to be compressed and compress the pre-cooled air. The subsystem is composed of 4 stages in series, each stage is composed o...

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Abstract

The invention discloses an air compression method and system with a self-precooling function. According to the method, air is compressed by multi-stage compression and interstage cooling, a cooling medium is used for recycling interstage compression heat and exergy, the recycled heat is used as a heat source, and cooling capacity is generated by an absorption refrigeration method and is used for precooling to-be-compressed air before each stage. The system mainly comprises three parts, i.e., a compressor unit gas circuit subsystem, a compressor unit water route subsystem and an absorption refrigeration machine subsystem. The air compression method and system are particularly suitable for being used in summer or high temperature environment; when the air is compressed by the air compression method and system, the gas production rate of the compressed air can be ensured, the moisture content of the compressed air is reduced, the pressure ratio of a compressor in each stage is increased, and power consumption in the compression process of each stage is obviously reduced; besides, the interstage compression heat and exergy of all the stages are fully utilized, and the energy usage ratio of the system is further improved.

Description

technical field [0001] The invention relates to a method and system for compressing air, in particular to a method and system for reducing the intake air temperature and work-consuming compressed air of compressors at various stages without providing additional energy. Background technique [0002] The function of the air compressor is to compress the air so that it has a certain pressure. It is widely used in various fields such as industry and agriculture, transportation, national defense, and daily life. There are many structural forms of air compressors, one of which is the piston compressor unit. At present, a piston compressor unit usually consists of several stages of compressors and interstage coolers. The role of the compressors at each stage is to compress the air sucked into the cylinder, and the role of the interstage cooler is to reduce the temperature of the air through the cooling medium to prepare for entering the next stage of compressor for compression. T...

Claims

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Application Information

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IPC IPC(8): F04B39/06
Inventor 杨征陈海生左志涛陈宗衍谭春青
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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