I do not profess to know the workings of Plastic P

I do not profess to know the workings of Plastic Pyrolysis and know only about what I've read on the internet and visits to the plant.

I'm guessing that the fluid is to be used to help flush/clean the reactor and improve productivity but that is only a guess - see link.

http://www.globalheattransfer.co.uk/heat-tran...2%84%A2-c1