Intermittent distillation of high freezing point mixtures uses external reflux. How to prevent solidification in the reflux ratio controller?
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This post was last edited by Wille on 2010-3-25 10:20 Batch distillation, 1mmhg, the freezing point of the compound is 80 degrees, and the compound is highly corrosive. The condenser is lined with PTFE material and the refluxer is all made of PTFE material. The compound gas goes through the tube side of the condenser. How to prevent solidification in the condenser and refluxer by using external reflux at the top of the tower?
The steam is mixed with heat, but there is a problem for you. Your pipes are lined with PTFE. If the temperature is too high, the PTFE material will be baked and deformed, and the PTFE material will affect the heat transfer rate. See if you can use 100-degree hot water to heat it. It's really not possible to use electric heat, but the cost is very high.
The more difficult thing is the anti-coagulation of the reflux ratio controller. We are going to use pure PTFE, which is very difficult. Neither steam nor hot water is going to be used because the materials in the system will explode when exposed to water. I have never used an electric mixer, can you tell me about LS?
For electric heating, you need to buy some electric heating wire and wrap it around the pipe. The electric heating wire is connected to a temperature controller to control the heating temperature. If the temperature is not high enough, it will automatically heat up. When the temperature reaches the temperature, the heating will automatically turn off. This is not difficult, there are people who specialize in this service.
Could you please consider vacuum distillation, so that the freezing point of the material will be lowered, perhaps without heat tracing, and the separation effect will be better, and perhaps the product purity will be higher.
This post was last edited by Wille on 2010-3-25 10:19 #guokwh2 The freezing point has little to do with pressure, which is different from the boiling point. I forgot to mention, our pressure is 1mmhg.
The PTFE lining can be enhanced with PTFE, which has a temperature resistance of about 150 degrees, so the condenser and reflux ratio controller can use steam, hot water, or electric heating. As for the advantages and disadvantages of these three, there are forums, you can refer to the choice! Please ask the host: Which manufacturer is used for the reflux ratio controller?
What we want to use is reinforced PTFE. There are several options available now, such as Qiushi in Tianjin. Because materials explode when exposed to water, steam and hot water are not considered. I'll see how electric heating can be used on the condenser and reflux ratio controller.
Plug-in electric heating is not recommended. It is recommended to use winding electric heating. There are self-temperature-controlled ones. There should be no problem with reinforced PTFE 200 degrees, but the thermal conductivity is not very good. Why can't it be made of stainless steel?