MVR evaporators and multi-effect evaporators are both energy-efficient evaporation equipment, but their working principles and applications differ.
MVR evaporator, also known as multi-effect falling film evaporator, is a high-efficiency and energy-saving evaporator manufactured by using MVR, that is, multi-effect falling film technology. Its principle is to use the continuous contact between the water and the heating pipe wall in the flow process for heat and mass transfer, so that the heat in the water is transferred to the heated material, so as to reduce the boiling point temperature of water, increase the boiling point temperature of the material and concentrate the material. In the MVR evaporator, when the product cannot reach the required concentration after passing through the effector for the first time, the product is pumped to the upper part of the effector through the external pipeline of the effector through the vacuum pump at the lower part of the effector after leaving the effector, and the desired concentration is reached by repeatedly passing through the effector. The effect of this evaporator is arranged inside the thin tube, the inside of the tube is the product, the outside is steam, in the process of the product from top to bottom flow due to the increase of the area in the tube and the product is film-like flow, in order to increase the heating area, the negative pressure is formed in the effect body through the vacuum pump, and the boiling point of the water in the product is reduced, so as to achieve concentration, and the evaporation temperature of the product is about 60.
The multi-effect evaporator is a combination of multiple evaporators, and the raw materials of the next evaporator are heated by using the steam generated by the previous evaporator, so as to achieve the purpose of saving energy and improving efficiency. Each effect has its own heater, separator and condenser, which connects multiple evaporators in series. The advantage of the multi-effect evaporator is that it can make full use of the steam generated by the previous evaporator, reduce the waste of energy, and at the same time improve the utilization rate and production efficiency of the equipment.
In general, MVR vaporizers and multi-effect vaporizers are both energy-efficient evaporation equipment, but they differ in their working principles and applications. MVR evaporators are suitable for various concentrations of solution concentration and waste liquid treatment, while multi-effect evaporators are suitable for large-scale industrial production.