So our team received our KDL-5 system from Chemtech not too long ago. The company (Helderpad) had some issues with the glass feed tanks, which was letting our heating solution (marlotherm) into our product. (We have since been in contact with the company and the tech that came out is working with us and others to ensure that the problems will be fixed).
After we fixed the feed tank issue, we ran a few liters through it to make sure everything is working properly. We pushed out about 2-3 liters of D9 to make sure it was all good. So yesterday, I was working late, and I noticed that the terp strip was hella dark and some distillate was being stripped off the main body into the terp fraction. Thinking quickly, I cooled the evaporator temp from 130C to 120C and slowed my feed pump to 30 from 35. Waited… no action to stop the flow of distillate or dark color… So I cooled the evaporator temp from 120C to 110C, and it was still pulling distillate into the terp fraction. I just stopped there and called it a night.
First time this issue is bothering us. BTW, on a side note, we carbon scrubbed and used carbon chemistry’s Silica Gel (which, using the gel seems to be giving us problems… we PIG Filtered the hell out of all our solution and then hochstrom filtered with 1micron filter papers and it still didn’t get all the silica gel out of it).
If anyone has had similar issues with wiped film evaporation, please help us out. Thanks