ZW serise Evaporation crystallization circulating pump is the use of impeller rotation along the direction of the pump axis of the horizontal thrust, so it is also called horizontal axial flow pump. Mainly used in diaphragm method, vacuum salt, lactic acid, calcium lactate, alumina, titanium dioxide, ammonium chloride, sugar, molten salt, paper making, waste water and other industries of evaporation, concentration, cooling, in order to improve the production capacity of equipment, increase the heat transfer coefficient of heat exchanger for forced circulation. Therefore, it can also be called axial flow evaporation crystallization circulation pump.
This series of axial flow pump can be widely used in chemical, non-ferrous metals, salt, light industry and other industries evaporation, crystallization, chemical reaction and other processes, its typical application range is as follows:
- Phosphate fertilizer plant: wet concentrator, ammonium phosphate slurry concentrator medium forced circulation.
- Bayer process aluminum oxide plant: forced circulation of liquid evaporator medium.
- Diaphragm process plant: forced circulation of nacL-containing liquid evaporator media.
- Vacuum salt plant: forced circulation pump for NaCl evaporating crystallizer media.
- Salt plant: Na2SO4 evaporator medium forced circulation pump.
- Hydrometallurgical plant: forced circulation of copper and other evaporative crystallizer media.
- Alkali refining plant: ammonium chloride process cold crystallization crystallizer, salt crystallization crystallizer ammonia mother liquor forced circulation.
- Soda plant: ammonium distillation waste liquid recovery process, forced circulation of CaCl2 evaporator medium.
- Paper mill: Forced circulation of dark night concentrator media.
- Power plants: forced circulation of ammonium evaporative crystallizer media in flue gas desulfurization, coking plants and chemical fiber plants.
- Light industry: alcohol concentration, citric acid evaporation, sugar evaporation and other station media forced circulation.
Performance characteristics of evaporative crystallization forced circulation pump
The ZW serise horizontal axial flow pump does not rely on the centrifugal force of the impeller on the liquid, but uses the thrust of the rotating impeller blade to make the liquid flow along the direction of the pump shaft. When the pump shaft is driven by the motor to rotate, because the blade and the pump shaft axis have a certain spiral Angle, so the liquid produces thrust (or lift), the liquid is pushed out and discharged along the discharge pipe. When the liquid is pushed out, the original position will form a local vacuum, the outside liquid under the action of atmospheric pressure, will be sucked into the impeller along the inlet tube. As long as the impeller is constantly rotating, the pump can continuously suck in and discharge liquid.
Good anti-cavitation performance: suitable for low level evaporator, greatly reduce the evaporation plant. It is also suitable for new evaporators with heating chambers with high fluid resistance on the pump inlet side (reverse circulation evaporator, double heating chamber series evaporator).
High pump efficiency, wide area: by changing the blade installation Angle, changing the speed of two methods, to meet the user’s requirements for flow, head and make the pump running station pump area, energy saving effect is significant.
Slow type: the pump runs smoothly; Flow parts wear light, long life; Low crystal breakage, suitable for evaporation crystallization process.
Cantilever rotor: compared with double support type, the number of shaft seals is halved, the pump weight is light, the external size is small, and the maintenance is convenient.
Pump body center support: Compared with the pump body support type, the rotor thermal neutral is good.
Rear door structure: without removing the inlet and outlet flange of the pump body, the rotor can be extracted, convenient and rapid maintenance.
Shaft seal: packaged machenical seal, life of 36-60 months or more;
Evaporator no expansion joint: available for elastic pump base or suspension pump, reliable heat compensation, reduce evaporator.
High reliability of the whole machine: high strength of the pump shaft, large bearing capacity, long life of the shaft seal, good material performance, to ensure the long-term operation of a single pump.
