detailed description

The MVR energy-saving wastewater evaporator consumes half of the energy of a regular single effect evaporator and one-third of the energy of a three effect evaporator

MVR evaporatorIntroduction:
MVR mechanical steam recompression device is a device that uses the secondary steam generated in the evaporation system to do work through a compressor, increases the enthalpy of steam, and circulates for heating and evaporation, fully utilizing the waste heat of the secondary steam and condensate in the system, with outstanding energy-saving effects. Without using fresh steam, it can save over 90% of condensed water, 80% of human resources, and 60% of the venue.
The MVR evaporator uses a compressor to compress secondary steam. Each domestic compressor can provide a temperature rise of 20 ℃, while each imported compressor can provide a temperature rise of 9 ℃. Therefore, the requirement for the inlet water of the evaporator system is to have a boiling point as low as possible below 15 ℃, in order to achieve energy-saving evaporation.
Single effect evaporation: Its generated steam is only used once in the system.
The difference between MVR and multi effect evaporator is that the secondary steam is constantly circulated in the system, so it can be considered that its energy has not been wasted.
The energy consumed by the system is the energy consumed by the compressor to raise the temperature from 119 ℃ to 130 ℃. MVR energy saving is reflected in its ability to convert secondary steam from useless to useful by only inputting 16KJ (tons of water).
Advantages of MVR evaporator:
High heat transfer coefficient:The evaporator with this structure has a variable flow field, making it easy for the liquid to reach a state of vigorous turbulence, and its heat transfer coefficient is 2-3 times that of the tubular type;
Not easily blocked:The material liquid forms a turbulent flow on the heat exchange surface, which can flush the heat exchange surface, causing the scaling bodies adhering to the heat exchange surface to detach and delaying the scaling cycle;
The surface is very smooth:The adopted processing technology ensures that the surface roughness of the heat exchange surface is controlled at a very low value, making it difficult for pollutants to adhere. The scaling rate of this type of heat exchanger is only 1/5 of that of a tubular heat exchanger;
Easy to clean and repair:Adopting a plate structure, the heat exchange surface can be easily disassembled, and any contaminated or damaged heat exchange surface can be easily replaced.
Applicable to:Evaporation and crystallization of various inorganic salts, evaporation of materials with high hardness, evaporation and concentration of leachate from garbage, concentration of materials in the food, fermentation, and pharmaceutical industries, and concentration of thermosensitive materials.
MVR evaporator product composition:
Preheater: In most cases, the solution to be evaporated needs to be preheated before entering the evaporator.
Evaporator: The solution that needs to be evaporated is heated with a heat source steam in the evaporator to produce evaporation. Select different types of evaporators based on the properties of different solutions.
Separators: Used for separating steam and liquid, different separators can be selected according to the properties of different solutions, generally including centrifugal separators, gravity separators, or special structure separators.
Various pumps: transport solutions to be evaporated and concentrated solutions. According to the different properties of the solution, different types of pumps can be selected, generally including centrifugal pumps, volumetric pumps, and screw pumps.
Compressor: Provides an evaporative heat source by compressing secondary steam, increasing the enthalpy of the secondary steam. According to the requirements of different flow rates and compression ratios, multiple compressors can be selected. For situations where the pressure rise is increased, multi-stage compressors can be used in series.
Control system: The MVR evaporation system control center adjusts the motor speed, valves, flow meters, temperature, and pressure to achieve automatic evaporation, cleaning, shutdown, and other operations. Automatic alarm, automatic protection system from damage, maintaining dynamic balance of the system.
Cleaning system: After evaporating different solutions for a period of time, scaling may occur. Generally speaking, more than 99% of scaling is removed by adding chemical solvents, and CIP in-situ cleaning or dismantling cleaning can be used.