In order to satisfy the waste water blowndown requirement of different position of the boiler. The blowdown expansion containers are distinguished into continuous blowdown expansion container and periodical blowdown expansion container. Therein the continuous one is intended to low down the pressure of the boiler's polluted water and separates out it into steam and useless hot water. Therein, the steam is introduced into the heat exchanger or the oxygen extractor, and the useless hot water putouts from the bottom. This expansion container deploys automatic level control system and pressure relief safety valve. The periodic blowdown expansion container is intended to lowdown the pressure of the hot water that should to drain into the underground trench. The expansion container separates out the polluted water into steam and useless hot water, the steam discharges into air, and the useless hot water outputs to the trench from the bottom.
In order to satisfy the waste water blowndown requirement of different position of the boiler. The blowdown expansion containers are distinguished into continuous blowdown expansion container and periodical blowdown expansion container. Therein the continuous one is intended to low down the pressure of the boiler's polluted water and separates out it into steam and useless hot water. Therein, the steam is introduced into the heat exchanger or the oxygen extractor, and the useless hot water putouts from the bottom. This expansion container deploys automatic level control system and pressure relief safety valve. The periodic blowdown expansion container is intended to lowdown the pressure of the hot water that should to drain into the underground trench. The expansion container separates out the polluted water into steam and useless hot water, the steam discharges into air, and the useless hot water outputs to the trench from the bottom.
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