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Boiler regular blowdown and expansion container

Overview

Regular blowdown expander is also called regular blowdown expansion container. The regular blowdown expander is a method that discharges the boiler's regular waste water or waste hot water with a higher pressure than the regular blowdown expander, and separates the secondary steam and waste hot water through decompression and expansion. The secondary steam is discharged into the atmosphere or used as a heat source. Waste hot water is generally discharged into the sewage system through a sewage cooling tank.

Boiler waste water has the same working pressure and saturated water temperature under the pressure of the boiler, and a throttle valve is arranged in front of the regular exhaust expander to reduce the pressure in order to expand and cool the regular exhaust expander and separate the secondary steam. Therefore, the use of secondary steam and waste hot water as a heat source can recover some of the heat lost by the boiler's blowdown and improve boiler efficiency.

SVDP type regular sewage expansion and expansion container

work process

The sewage from the boiler is evenly discharged into the sewage expansion vessel. The sewage is tangentially moved in the cylindrical partition in the middle of the shell and immediately vaporized into secondary steam. After passing through the upper shutter-type steam-water separator for steam-water separation, , And then led out through the outlet at the top of the fixed row, and the remaining sewage is discharged through the water level regulating valve.

Precautions

Selection

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