Forced Circulation Evaporator

                                                Introduction of Forced Circulation Evaporator 

1. Working principle :

The circulation of the solution in the equipment mainly depends on the forced flow generated by the external force. The cycle speed can generally reach 1.5-3.5 m/s. Large heat transfer efficiency and production capacity. The raw material liquid is driven from bottom to bottom by the circulating pump and flows upward along the tube of the heating chamber. Steam and liquid foam mixture into the evaporation chamber separated, the vapor from the upper part of the discharge, fluid blocked fall, through the conical bottom by the circulation pump suction, and then into the heating pipe, continue the cycle.

2. Application range:

Suitable for easy scaling liquid, high viscosity liquid, as a high concentrator in multi-effect evaporation device.

Forced-circulation evaporators are ideal for use as crystallization evaporators for salt solutions.

Application field of forced circulation evaporator:

1) widely used in medicine, food, chemical, light industry and other industries of wastewater depth concentration

2) sodium chloride, potassium chloride various salt solution crystallization

3) easy to scale, crystalline materials

4) power plant desulfurization wastewater

5) chemical high salt wastewater

3. Feature:

1) The circulation of the solution in the equipment mainly relies on the forced flow generated by the external power, and the circulation speed can generally reach 1.0-3.5 m/s, and the heat transfer efficiency and production capacity are large.

2) The raw material liquid is driven from bottom to bottom by the circulating pump and flows upward along the tube of the heating chamber.

3) The material does not evaporate in the heat exchanger, flash in the separator, the vapor is discharged from the upper part of the separator, the fluid is blocked and falls, the conical bottom is inhaled by the circulation pump, and then enters the heating tube to continue the cycle.

4. Structure:

Forced circulation evaporator is usually composed of evaporator body, heater, condenser, pump, etc. The evaporator body is the core of the entire equipment, usually in cylindrical or conical design.

5. Component:

The forced circulation evaporator is composed of each effect heater, each effect evaporation separator, condenser, forced circulation pump, supply pump, vacuum pump, condensate pump, operating platform, electrical instrument control cabinet and boundary pipeline valve, etc.

1) Heater: The heat exchange tube is the most important heat load element of the evaporator.

a. The steam enters the heating chamber with multiple channels.

b. The evaporation tube bundle is evenly distributed on the tube plate to improve the thermal efficiency of the steam.

c. The heating setup is specialized, which effectively overcomes the vibration of the evaporation tube and prolongs the steam residence time, which is conducive to heat transfer.

2) Evaporation separator: upright cylinder, the lower part of the conical bottom to facilitate the discharge of crystal slurry. The secondary steam is discharged from the top, and after being defromed by the defroster, it enters the vapor-liquid separator and enters the condenser. The conical bottom of the evaporation chamber is connected with the circulating pump.

3) Forced circulation pump: is based on the fluid in the heat transfer flow state, heat transfer efficiency, and resistance calculation requirements.

6. Parameter: