12/03/2018

Vacuum Pump in Natural Gas Treatment Technology Application


In natural gas production, some processes often need to be carried out at less than one atmospheric pressure. The so-called vacuum pump is a kind of mechanical equipment that can obtain an absolute pressure below atmospheric pressure. According to the structure, there are many types of vacuum pumps. Several common types of vacuum pumps in production are introduced as follows:
(1) Reciprocating vacuum pump
The working principle of reciprocating vacuum pump is similar to that of reciprocating compressor except that the valve used is lighter and the clearance is smaller. Generally, it is single-stage, and the inhalation gas pressure is much lower than the local atmospheric pressure at that time. Reciprocating vacuum pumps are dry type and domestic reciprocating vacuum pumps are coded W. Now there are five main specifications of W 1 to W 5, which have been widely used.
(2) jet pump
Jet pump uses hydrostatic energy to transfer kinetic energy when fluid flows. It can be used to suck liquids or gases. It is often used in evaporation and distillation systems to produce vacuum, so it is also called jet vacuum pump.
(3) Water ring vacuum pump
Water ring vacuum pump is a wet vacuum pump, which can obtain 85% vacuum degree. The pump has simple structure, compact structure, no valve and can be connected vertically by motor. The series of domestic water-ring vacuum pumps is named sz. This kind of vacuum pumps are often used to suck air and non-corrosive, water-insoluble and solid-free gases.

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