The difference between the three outer cycle evaporators, the structure and the use of each

　　Pharmaceutical Network Technical Article: In the pharmaceutical industry, evaporation process is a high energy-consuming production process, the process of secondary steam generated, due to direct discharge of the atmosphere caused by waste heat energy waste With the rapid development of science and technology, some with rate, low-cost, low energy consumption of evaporation equipment in the market stand out, by the pharmaceutical and other users of all ages
Among them, the outer circulation evaporator is an evaporation equipment, it can make the evaporative solution in the evaporator liquid membrane flow through the heated surface quickly make light phase evaporation, thus shortening the heating stay time, strengthen the evaporation effect, with energy saving, heating time is short, the application of higher viscosity material evaporation, concentration and concentration is relatively large advantages, but also to obtain high-quality deionized water to meet the needs of industrial boiler water At present, the outer cycle evaporator in the pharmaceutical, biological, food, chemical and other industries
Among them, in the pharmaceutical field, the evaporation device in the process of operation, need to consume a large amount of heated steam, in order to save heating steam, can use the external cycle evaporator, so that it effectively evaporates the volatile liquid into gas, and can adjust the concentration of the pharmaceutical vapor output
It is understood that the current market of external circulation evaporatorhas a single-effect external cycle evaporator, a double-effect outer cycle evaporator and a three-effect outer cycle evaporator So, what is the difference between these three outer-cycle evaporators?
Single-effect extra-cycle concentrator, single-effect outer-cycle vacuum concentrator is mainly used in traditional Chinese medicine, Western medicine, food, chemical and other industrial organic solvents (such as alcohol) recovery, suitable for small quantities, varieties of multi-species thermal materials low-temperature vacuum concentration
Single-act ingress concentrator single-act outer-cycle concentrator adopts the combination of external heating natural circulation and vacuum negative pressure evaporation, and the evaporation speed is fast And liquid in the full seal without foam concentration, simple operation of equipment, small footprint, easy to clean Equipment and liquid contact site are made of stainless steel, in line with GMP standards Single-effect out-of-cycle concentrator has the advantage of large recovery capacity, high efficiency, low energy consumption, small investment and high return
Double-effect outer-cycle evaporator dual-effect outer-cycle evaporator, as the name implies, the use of dual-effect simultaneous evaporation, secondary steam is fully utilized, energy-saving effect is significant Equipment by one-two-effect heater, one-two-effect evaporation, defoamer, condenser, fluid tank, etc , inside and outside precision polishing, low evaporation temperature, fast speed, can greatly improve the efficiency of enterprises, reduce costs Double-effect exocirculation evaporators are often used for evaporation of Chinese medicine extraction fluids, fine chemical solutions, etc
Some users said, dual-effect outer circulation evaporator using two-effect simultaneous evaporation, secondary steam is fully utilized, not only to save the investment of the boiler, but also to save energy consumption, energy consumption compared to a single-effect concentrator reduced by 50%, energy-saving effect is more significant
Three-effect outer-cycle evaporator Three-effect outer-cycle evaporator consists of one- and two-effect evaporator, condenser, storage tank, soda separator, defoamer, circulation tube and so on Heater for the column tube double-layer structure, the design layout is compact and reasonable, the appearance is beautiful, the process is good The use of external processing thermal natural circulation type and negative pressure evaporation mode, with evaporation speed, high yield, concentration ratio of significant advantages, because of the three-effect external circulation evaporator using multi-effect evaporation, two or three steam can be reused, energy-saving effect is more significant
In addition, the three-effect outer cycle evaporator and dual-effect equipment, can be fully realized in the continuous in and out of materials, condensate continuous discharge, automatic control of the level, material concentration and delivery increase, simple and convenient operation It's cheaper and more energy efficient to run.