The single effect external circulation vacuum concentrator is suitable for industrial alcohol recovery in traditional Chinese and Western medicine, glucose, brewing, starch, oral liquids, chemical industry, food, food additives, monosodium glutamate, dairy products, etc. The single effect concentrator can be used for vacuum concentration with low thermal sensitivity for small batches and a wide variety of products. Single effect concentrators are commonly used for evaporation and concentration of materials such as alcohol extract and alcohol precipitate, as well as thermosensitive low-temperature concentration of various materials. They have the characteristics of short time and fast speed, and can be used for multiple operations such as atmospheric pressure, vacuum concentration, and paste collection in one machine.
The single effect external circulation vacuum concentrator consists of a heating chamber, an evaporation chamber, a foam catcher, a condenser, a cooler, a liquid receiving tank, and system inline connecting valves, supporting instruments, etc. The parts in contact with the material are all made of stainless steel 304/316L, which has good corrosion resistance. Beautiful appearance, both the heater and evaporator are equipped with insulation, and the outer shell of the insulation is made of stainless steel plate, with a mirror or matte surface treatment to meet GMP standards.
The working principle of a single effect external circulation vacuum concentrator:
Heat the liquid material up and spray it into the evaporation chamber through the nozzle for vapor-liquid separation. The liquid material returns to the lower part of the heating chamber through the circulation pipe for reheating, and is then sprayed into the evaporation chamber for circulation. The feed liquid of the single effect concentrator is concentrated to the specified degree, and after sampling, the feed is discharged from the outlet. The steam evaporated from the evaporation chamber is removed foam by the demister, and then passes through the vapor liquid separator. Part of the feed liquid returns to the evaporation chamber, and the rest of the secondary steam is cooled into liquid by the condenser and cooler and enters the liquid storage tank, allowing the non condensable gas to be discharged into the atmosphere or taken away by the vacuum pump.
The single effect concentrator mainly has the following characteristics:
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 feed 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.
2. 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.
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. 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 of the secondary steam is re sucked into the hot press pump and mixed with the raw steam, saving 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.
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.