Introduction
The multi-effect falling film evaporator is a device used for low-temperature continuous evaporation and concentration.
composition
The multi-effect falling film evaporator is composed of each effect heating evaporator, each effect separator, condenser, heat pump, sterilizer, insulation pipe, vacuum system, each effect material liquid transfer pump, condensate drainage pump, operation platform, electrical instrumentation Control cabinet, valves, pipelines and other systems.
1、The entire heating system of the equipment has the main characteristics of high heat transfer efficiency and short heating time due to uniform steam heating and liquid film flow evaporation. If equipped with a hot pressure pump, it has the advantages of energy saving and consumption reduction, low steam consumption and low cooling water circulation.
2、The material is accelerated and pressurized to flow and evaporate along the inner wall of the pipe, which is suitable for the evaporation and concentration of the material with high viscosity.
3、Since the material evaporates in a film form in each tube, the heating time of the material liquid is very short, so it is especially beneficial to the evaporation and concentration of food, and the nutrient content of the food is greatly preserved.
4、Under the action of vacuum, the evaporation process not only guarantees the sanitary requirements of the materials, but also guarantees the environmental protection requirements. At the same time, the evaporation temperature is greatly reduced. With the configuration of the hot pressure pump, part of the secondary steam is re-inhaled and mixed with the raw steam by the hot pressure pump. , It not only saves raw steam, but at the same time, because the steam passing through the heat pressure pump enters the heating shell in the form of spray mist, the steam diffuses quickly and the material liquid is heated gently, so it is suitable for the concentration of heat-sensitive materials.
5、The equipment is suitable for the evaporation and concentration of foaming materials. Because the material liquid evaporates in the heating tube as a film, vapor-liquid separation is formed. At the same time, at the bottom of the effect body, most of the material liquid is pumped away, and only a small part of the material liquid and All the secondary steam enters the separator to strengthen the separation, and the material-liquid consolidation process does not cause much impact, and the formation of foam is avoided.
6、For food evaporative concentration, the equipment can have sterilization function at the same time. The material is preheated first, and then enters the sterilizer, reaching above 94 degrees, and maintaining it for about 24 seconds.
7、The equipment can be equipped with a CIP cleaning system to realize on-site cleaning. The whole set of equipment is easy to operate and has no dead ends.
8、The equipment continuously feeds and discharges materials.
9、The equipment can be equipped with an automation system to realize automatic control of feed volume, automatic control of heating temperature, automatic control of discharge concentration, automatic control of cleaning, and can also be equipped with protective measures for sensitive materials in case of sudden power outages or failures. Other automatic operation and control such as security and alarm.
scope of application
This machine is suitable for low-temperature continuous evaporation and concentration in milk, glucose, starch, xylose, pharmaceutical, chemical, biological engineering, environmental protection engineering, waste liquid recycling and other industries. It has the main characteristics of high heat transfer efficiency and short heating time of materials, so Especially suitable for heat-sensitive, viscous, foaming and other materials
