Vacuum pump for geothermal gas removal

Steam discharged from the condenser and other applications of non-condensable gases include similar gases discharged from the condenser. At geothermal plants, however, the steam used to drive the turbines is extracted from Earth and contains large amounts of corrosive gases. The gas must be vented out of the condenser in the most efficient manner.

Geothermal hybrid steam power plant

A small community of about 500 families has discovered an underground source of geothermal salt that can be used to boil water at 100°C and hopes to use it to generate electricity. Initial design of a low-pressure geothermal facility in which water is boiled to 100°C by a ground heat source and then superheated to 200°C by a wood-burning superheater. Please note that the high pressure of the system is 100kPa and a convenient degassing device can be placed at the pump outlet.

Vacuum pump for geothermal gas removal

Liquid ring vacuum pump pump work to pay attention to which aspects?

Liquid ring vacuum pump is a crude pumping pump with liquid as working medium. Among them, water as working medium is called water ring vacuum pump, other can also be oil, sulfuric acid and acetic acid as working medium. Industrial Sheung Shui ring vacuum pump applications in the majority. The type of pump is mainly determined by the required amount of air, vacuum or exhaust pressure. When the pump is working, it is necessary to pay attention to the following two aspects:

1. As far as possible, it is required to operate within the high efficiency zone, that is, within the critical vacuum or critical exhaust pressure.

2. Avoid operating near large vacuum or exhaust pressure. Operating in this area, not only the efficiency is very low, but also the work is very unstable, easy to produce vibration and noise. For the higher vacuum degree of vacuum pump, run within the region, and also tend to occur cavitation phenomenon, have obvious sign of the phenomenon is pump with noise and vibration. Cavitation can cause the damage of the pump body, impeller, etc, so that the pump will not work.

According to the above principles, when the pump required vacuum or gas pressure is not high, can be selected in a single stage of the pump. If the vacuum or exhaust pressure is higher, single-stage pump is often not able to meet, or, the requirement of the pump in the case of a higher vacuum is still a larger gas volume, that is, the requirement of the performance curve in a higher vacuum is flatter, can choose a two-stage pump. If the vacuum degree is above -710mmhg, water ring-large air pump or water ring-Roots vacuum unit can be selected as the vacuum pumping device.

If only for vacuum pump, the selection of single pump is better. For single pump simple structure, easy manufacture and maintenance, and under the condition of high vacuum cavitation resistance. If only for the use of larger gas compressor, then choose the double action pump is more appropriate. Because the double action pump air volume, small volume, light weight, radial force can be automatically balanced, shaft is not easy to generate fatigue fracture, long service life of the pump.

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