Emulsion wastewater double - effect evaporation system
1 Material process flow
(1) After the raw material is transported from the feed pump through the electromagnetic flowmeter to the front-end primary preheater (raw steam condensate preheating),
Enter the top of the one-effect heater through liquid distribution for a falling film evaporation and concentration:
(2) The concentrated liquid is transported to the liquid distributor at the top of the two-effect heater by the one-effect bottom material circulation pump
Secondary falling film evaporation concentration.
(3) The two-effect concentrated liquid is transported to the liquid distributor at the top of the three-effect heater by the two-effect bottom material circulation pump
Secondary falling film evaporation concentration;
(4) The concentration of the three-effect concentrated liquid shall be detected in real time according to the online detection of the hydrometer. If the concentration of the material is up to
To set the requirements, and the discharge valve interlock, open the discharge conveying finished product tank, otherwise, open the material circulation valve
The material is circulated again in the evaporator for further evaporation and concentration.
2. Steam process
The raw steam enters the primary effect heater for heating evaporation and concentration: the secondary steam produced by the primary effect heats the secondary effect
And so on. The secondary steam generated by the three effects enters the terminal condenser for condensation and cooling, and the condensate water is concentrated by the condensate pump
Eduction.
3. Condensed water process
The condensed water produced by the steam of the first-effect heater passes through the preholder at the front end of the water transmission pipe at the bottom of the shell to prehold the material to section
Usage of raw steam: The condensate water generated by the secondary and tertiary effect feeder and condenser is discharged by the condensate pump
Discharge zero pollution: the non-condensable air is taken over by the non-condensable air to the termina
