Principle of energy saving evaporation by MVR evaporator

The principle of energy-saving evaporation of MVR evaporator MVR evaporator is a new type of energy-saving evaporation equipment mainly used in the pharmaceutical industry The equipment uses low-temperature and low-pressure steam evaporation technology and clean energy as the energy to generate steam and separate the water in the medium It is an internationally advanced evaporation technology MVR evaporator is short for mechanical vapor recommendation in English MVR is a technology to reuse the energy of secondary steam generated by itself, so as to reduce the demand for external energy The secondary steam is compressed by the compressor, the pressure and temperature are increased, and the enthalpy is increased accordingly It is sent to the heating chamber of the evaporator as the heating steam, i.e raw steam, to maintain the evaporation state of the material liquid, while the heating steam itself transfers the heat to the material itself and condenses it into water In this way, the original steam to be discarded is fully utilized, the latent heat is recovered, and the thermal efficiency is improved As early as the 1960s, Germany and France have successfully applied this technology to chemical industry, pharmaceutical industry, papermaking, sewage treatment, desalination and other industries The working process is that the steam at low temperature is compressed by the compressor, the temperature and pressure are increased, the enthalpy is increased, and then it enters the heat exchanger for condensation, so as to make full use of the latent heat of the steam In addition to start-up, there is no need to generate steam during the whole evaporation process In the process of multi effect evaporation, the secondary steam of one effect of the evaporator can not be directly used as the heat source of the primary effect, but only as the heat source of the secondary effect or the secondary effect If it is used as the heat source of this effect, it must be given extra energy to increase its temperature (pressure) The steam jet pump can only compress part of the secondary steam, while the MVR evaporator can compress all the secondary steam in the evaporator The solution is in a falling film evaporator and circulates in the heating pipe through the material circulation pump The initial steam is heated outside the pipe with fresh steam, and the solution is heated and boiled to generate secondary steam The secondary steam is drawn in by the turbocharged fan After being pressurized, the temperature of the secondary steam is increased, and it enters the heating chamber as the heating heat source for circulating evaporation After normal start-up, the secondary steam is sucked in by the turbo compressor, and then it becomes heated steam after pressurization, so the cycle evaporation is carried out continuously The evaporated water will eventually become condensed water and be discharged.