How to save energy for Roots vacuum unit

The roots vacuum unit is used to replace the non energy-saving vacuum pump. After running for a period of time, the defects of W-type reciprocating vacuum pump and water ring vacuum pump are better solved, and the effect of power saving is very obvious.

In the process of energy conservation and emission reduction, new energy-saving products are actively selected to replace the original high-energy-consuming equipment. Roots vacuum unit can freely control the vacuum degree of the system by selectively opening and closing the motors of two vacuum pumps in series. The paper compares the economic benefits of Roots vacuum unit with that of SZ single water ring vacuum pump. If roots vacuum unit is used, 430000 kW of electricity can be saved in the whole year.

At present, there are mainly W-type horizontal reciprocating vacuum pump and water ring vacuum pump, but there are some defects in the use process. In the process of chemical process control, the requirements for vacuum degree tend to gradually increase from low to high with the reaction going on. The motor equipped with the above vacuum pump always works at rated power. If the pumping system is given a higher pumping rate at the beginning of the reaction, on the one hand, it will cause a large loss of organic solvents in the reaction system, on the other hand, it will make the operation difficult to control, The phenomenon of "punching material" often appears. If we want to get a lower vacuum degree in the initial stage of the reaction, we often open the vent valve on the vacuum buffer cylinder at a certain angle to solve this problem. Therefore, a large amount of air is inhaled by the vacuum pump on the production site, which results in the waste of electric energy.

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