Low-temperature evaporation and concentration equipment
Low-temperature evaporation and mechanical vapor recompression (MVR) are two common evaporation technologies, which are widely used in industrial production in liquid concentration and wastewater treatment. Although they are both methods of liquid concentration using the principle of evaporation, there are some differences in terms of operating principle, energy consumption and scope of application.
First of all, cryogenic evaporation is a traditional evaporation technology that operates by heating a liquid to evaporate it and then separating the vapor from the liquid, thus achieving liquid concentration. Low-temperature evaporation usually requires a higher energy expenditure because the liquid needs to be heated to a higher temperature to evaporate. In addition, low-temperature evaporation has certain limitations on the concentration range of liquids, which is usually suitable for concentrating liquids with higher solids content.
In contrast, MVR is a new type of evaporation technology that operates by mechanically compressing steam to improve evaporation efficiency. In an MVR system, the vapor is compressed and re-enters the evaporator, where it comes into contact with the liquid and transfers heat, resulting in liquid concentration. Since the steam in the MVR system can be recycled, the energy consumption is low. In addition, the MVR system has a wide range of liquid concentration and is suitable for concentrating all types of liquids, including those with lower solids content.
In addition, there are some differences between low-temperature evaporation and MVR in the equipment structure. Low-temperature evaporation typically requires larger evaporators and condensers, as well as longer evaporation times. MVR systems, on the other hand, typically have a compact equipment structure with a short evaporation time and a small footprint.
In summary, low-temperature evaporation and MVR are two common evaporation technologies, and there are some differences between them in terms of operating principle, energy consumption and scope of application. Low-temperature evaporation is a traditional evaporation technology with high energy consumption and is suitable for concentrating liquids with higher solids contentMVR, on the other hand, is a new type of evaporation technology with low energy consumption and is suitable for concentrating various types of liquids. In addition, the MVR system offers advantages such as a compact plant design and short evaporation times. With the continuous progress of science and technology, the application prospect of MVR system in industrial production will be broader.