The water ring vacuum pump used in distillation recovery can realize the complete distillation of liquid, and ensure that the distillation recovery effect is good. The indirect distillation method can recover the liquid level of trichloroethylene, and the indirect distillation method can avoid the damage of liquid level due to excessive heating in the distillation tank. By using the temperature conduction of the heat conducting medium in the heating tank, the liquid in the distillation tank can reach the distillation temperature, so that the liquid in the distillation tank can be in a constant temperature state, and the phenomenon of excessive boiling and uneven heating caused by direct heating can be avoided.
Matters needing attention of ring vacuum pump for distilled water recovery
The matters needing attention of water ring vacuum pump for distillation and recovery are divided into water ring vacuum pump selection, reaction kettle size, recovery tank cooling size, condenser size, heating temperature and theoretical working pressure of water ring vacuum pump.
For example, a chemical plant needs to vacuumize a 7m3 reactor, and then recover the mixture of ammonia and steam, namely ammonia water. The recovery tank is 7m3, the heat exchanger area is 15 m2, and the heating temperature is 60 ℃. What kind of vacuum pump is needed to reach the site and request to evaporate about 1-2 tons of materials in 4 hours?
First of all, we need to confirm the saturated vapor pressure of the material. After reviewing the data and theoretical application, we know that if the heating temperature is about 60 ℃, and the vacuum degree needs to be pumped to about 10000pa (- 0.09mpa), the material can be distilled out. Therefore, the water ring vacuum pump is the most suitable one. Then what size of water ring vacuum pump is needed How about meeting the craft request and not making waste?
As we all know, the water ring vacuum pump in the distillation recovery process should be related to the size of the reaction kettle, the size of the condenser of the recovery tank, and the temperature of the heater. According to the data provided, the maximum product of the condenser and reactor of the recovery tank is not more than 8-9m3, and it needs to evaporate about 1-2 tons of materials within 4 hours. The 2be202 water ring vacuum pump (the limit pumping speed is 12-14m3 / min) can be selected It is the best to cool down the heat exchanger at about 20 ℃ to reach the ideal effect of vacuum pump and improve the working efficiency in the whole process.
The matters needing attention of the ring vacuum pump for distillation and recycling also include the air tightness of the pipeline and tank, local atmospheric pressure and other elements. The above mentioned are some basic elements that mainly affect the distillation recovery process.