Fixed discharge and sewage expansion container

1、 Overview of Regular Pollutant Discharge Expansion Vessels

The periodic discharge expansion container is also known as the periodic discharge expansion device. The periodic discharge expander is used to discharge boiler wastewater or waste hot water with higher pressure than the periodic discharge expander, and then separate secondary steam and waste hot water through pressure reduction and expansion. The secondary steam is discharged into the atmosphere or used as a heat source, while the waste hot water is generally discharged into the sewage system through a sewage cooling pool.

The boiler wastewater has the same working pressure and saturated water temperature as the boiler. A throttle valve is installed before the periodic discharge expander to reduce the pressure, so as to expand and cool the wastewater in the periodic discharge expander, and separate the secondary steam. So utilizing secondary steam and waste hot water as heat sources can recover some of the heat lost from boiler discharge and improve boiler efficiency.

2、 The working process of regularly discharging and expanding containers

The boiler sewage is evenly discharged into the sewage expansion container. The sewage moves tangentially in the cylindrical partition in the middle of the shell and immediately vaporizes into secondary steam. It is separated into steam and water by the upper louver type steam water separator, and then discharged through the outlet at the top of the fixed discharge. The remaining sewage is discharged through the water level regulating valve.