An energy-saving and electricity-saving gas compression system

Abstract

The invention relates to an energy-saving and electricity-saving gas compression system, which includes a heat exchanger, a steam turbine, and a fan. In addition to the main bypass, there is also a first bypass, which is connected to the gas input port of the heat exchanger to provide a heat source for the heat exchanger, and the heat exchanger is also connected to the steam turbine through the heat exchange pipeline that delivers the heat exchange agent To provide the power source for the steam turbine, the output port of the fan is connected with the input port of the gas mixer. The energy-saving and electricity-saving gas compression system of the present invention utilizes heat exchangers and steam turbine equipment to recycle the heat energy of the gas compressor, improves the power and intake of gas at the input port of the gas mixer, and increases the capacity of the air compressor. The exhaust volume can realize energy saving and power saving, and the effect of energy saving and power saving is remarkable and effective.

Description

technical field [0001] The invention relates to an energy-saving and electricity-saving gas compression system. Background technique [0002] A gas compressor is a machine that compresses gas to make high-pressure gas to provide gas pressure energy, and is the main body of the gas source device. According to the working principle, the gas compressor has a volume type and a speed type. The former increases the gas pressure by compressing the gas volume to increase the molecular density, and the latter increases the gas pressure by increasing the gas molecular speed and increasing the molecular kinetic energy. At present, the commonly used gas compressors include screw type, piston type, centrifugal type, sliding vane type, scroll type gas compressor and so on. According to authoritative testing, only 10% of the electrical energy consumed by the gas compressor is converted into compressed gas, and the remaining 90% is converted into heat energy, and this 90% of heat energy is...

AI Technical Summary

Problems solved by technology

For gas compressors using traditional adjustment methods such as screw gas compressors, the energy consumption in the unloaded operating state is more than 20% of that in the full-load operating state, and some gas compressors even reach about 40%, accounting for the total energy consumption. 9%-18% of the consumption, the degree of waste is very serious

[0005] 2. The starting current is too large: the starting current of the gas compressor can reach 5 times to 7 times the rated current, and the impact on the power grid will easily lead to the instability of the power grid, and even threaten the stable operation of the electrical equipment, shortening the life of the gas compressor

[0006] 3. Low degree of automation: The adjustment of traditional gas compressors is realized by controlling the regulating valve and loading / unloading valve, which has the disadvantages of slow speed, unstable pressure, and low precision.

[0007] 4. Large amount of maintenance: due to the large impact current on the equipment when the gas compressor is started, the motor is subject to relatively large wear and tear, and the loading / unloading operation mode causes the components to perform repeated actions continuously, resulting in accelerated aging of the components and damage to the equipment. A lot of work to maintain

[0008] 5. Loud noise: continuous high speed, overload, loading / unloading, etc. cause the gas compressor to run costly and generate a lot of noise

[0014] 5. Reactive power compensation and energy saving: Gas compressors usually use asynchronous motors, and the power factor of asynchronous motors is relatively low, mostly between 0.2 and 0.85, which varies greatly with the change of load, and the energy loss is large

[0016] 7. Multi-unit group control energy saving: In the occasions where the gas consumption is large and the gas load fluctuates greatly, it is difficult to use a single large-capacity gas compressor to meet the needs of gas volume adjustment, and often use multiple gas compressors

However, the working medium of this gas compressor is condensing agent. Due to the limited injection power of the ejector, it cannot be applied to a gas compressor using air as the working medium, and it is difficult to achieve the effect of boosting.

In addition, the gas amplifiers or injectors commonly used in the above-mentioned gas mixers have the problems of large fluctuations, small exhaust volume, insufficient pressure and the inability to introduce external supplementary gas to increase the gas volume when they are used alone in a closed circuit, resulting in their scope of application being restricted. very restrictive

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