The multi effect falling film evaporator consists of various effect separators, condensers, hot press pumps, sterilizers, insulation pipes, vacuum systems, various effect liquid transfer pumps, condensate drainage pumps, operating platforms, electrical instrument control cabinets, valves, pipelines, and other systems. This equipment is suitable for low-temperature continuous evaporation and concentration in industries such as milk, glucose, starch, xylose, pharmaceuticals, chemical engineering, biotechnology, environmental engineering, and waste liquid recovery. It has the main characteristics of high heat transfer efficiency and short material heating time, making it particularly suitable for materials with heat sensitivity, viscosity, foaming properties, etc.
The main characteristics of the multi effect falling film evaporator are as follows:
1. The equipment can be configured with an automation system to achieve automatic control of feed quantity, heating temperature, discharge concentration, cleaning, and can also be equipped with protective measures for sensitive materials in case of sudden power outages or malfunctions. Other automated operations and controls such as safety and alarm.
2. Under the action of vacuum, the evaporation process not only ensures the hygiene requirements of the material, but also meets environmental protection requirements, greatly reducing the evaporation temperature. In addition, a hot press pump is installed, and some secondary steam is re sucked into the hot press pump and mixed with the raw steam, which saves the raw steam. At the same time, due to the steam entering the heating shell in the form of spray mist through the hot press pump, the steam quickly diffuses and the material liquid is heated gently, making it suitable for the concentration of heat sensitive materials.
3. Due to the film like evaporation of materials in each tube, the heating time of the liquid is very short, which is particularly advantageous for food evaporation and concentration, and greatly preserves the nutritional content of the food.
4. For food evaporation and concentration, the equipment can also have sterilization function. The material is first preheated and then enters the sterilizer to reach a temperature of over 94 degrees Celsius, which is maintained for about 24 seconds, and then enters the first effect body. The material quickly flashes and the temperature drops instantly.
5. The equipment is suitable for evaporation and concentration of foaming materials. Since the feed liquid evaporates in a film form in the heating tube, vapor liquid separation is formed. At the same time, at the bottom of the effect body, most of the feed liquid is pumped away. Only a small part of the feed liquid and all the secondary steam enter the separator to strengthen separation. The feed liquid does not form too much impact during the whole process, avoiding the formation of foam.
6. Continuous feeding and discharging of equipment.
7. The equipment can be equipped with a CIP cleaning system to achieve on-site cleaning, and the entire equipment is easy to operate.
8. The material accelerates downward along the inner wall of the pipe, flows under pressure, and evaporates to adapt to the evaporation and concentration of high viscosity liquid materials.
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 of the material liquid. If the hot press pump is further configured, it will have the advantages of energy saving and consumption reduction, low steam consumption, and low cooling water circulation.