It is understood that there are many types of rotary vacuum evaporator equipment on the market. Due to the fierce competition among enterprises, there are many products with the same products. Some customers feel overwhelmed when buying. The rotary vacuum evaporator can rotate under constant temperature heating and negative pressure conditions to form a thin film, and then evaporate the solvent for condensation and recovery. It is particularly suitable for the concentration, crystallization, separation, and solvent recovery of heat-sensitive materials. It is an important equipment for scientific research, teaching, and pilot production in the biological, pharmaceutical, chemical, and food industries.
How to choose the model is the key. When buying a rotary vacuum evaporator, as long as you master the important skills, it will be much more convenient to buy. Next, let's talk about what issues customers care about when buying an evaporator? What are the important performance indicators?
The first important thing about the rotary vacuum evaporator is the air tightness of the instrument, which is related to whether the instrument can be used normally and the service life of the instrument. The quality of air tightness has a lot to do with the design, manufacturing process, and materials used of different brands. It can be measured by "reachable vacuum degree" and "vacuum holding time".
Does the power of the bathtub have a direct impact on the evaporation rate?
The power of the bath has a great influence on the evaporation rate, especially for substances with large latent heat of evaporation (such as "water"). When evaporating, they absorb a lot of heat energy, and the fastest evaporation rate is almost proportional to the maximum heating power.
What is the difference between glass lifting and bath vortex lifting?
Relatively speaking, bath lifting is safer and glass is not easy to break. And the bath does not need to be locked after lifting, which is more convenient to operate than glass lifting.
Are there any energy-saving methods for large rotary vacuum evaporators?
The power of 50L rotary vacuum evaporator is 9KW, and the bath power of 20L rotary vacuum evaporator is 5KW. When multiple units are used together, power supply often becomes a problem. Choosing steam heating equipment is an effective solution for energy saving. Is the electric lifting function important?
It is very important. It is a icing on the cake function. Considering the cost-effectiveness, safety, failure rate and other aspects, most people choose manual lifting, and those with explosion-proof requirements hardly consider electric lifting.
What should I do when the tap water temperature is not low enough to condense?
The tap water temperature in summer is close to 30-40 degrees, and it is almost impossible to recycle solvents with steam temperatures below 30 degrees. Industry insiders said that in this case, there are three options.
Among them, the best option is to choose a low-temperature cooling water circulation pump that matches the refrigeration capacity. When choosing compensation, it should be noted that "refrigeration capacity" is more important than "low temperature"; small machines (5L or less) can be equipped with "cold traps" for cooling, which is less expensive, but requires manual ice addition; when the bath temperature remains unchanged, the vacuum degree is reduced and the steam temperature is increased at the expense of the evaporation rate.
Wonderful! Share this Blog:
