Inquiry (采购产品): Color removal and filtration I am a consultant to the pharmaceutical industry. A current client has a need to "clean" up a viscous polymer by treating it with activated carbon, followed by a final filtration down to something like 1 micron. Their current process heats the polymer to 80 deg C, where it becomes liquid (like warm honey), and recirculates it through a stack of carbon disks, which removes color. However, it puts tiny carbon particles into the polymer, so they have to do a final filtration. The whole cannister apparatus has to be cleaned, which is difficult, because the polymer is sticky and has to be cleaned with ethanol. I believe that an easier approach would be a "packed column" of carbon, through which the polymer would flow in a single pass. After flowing through the carbon, and prior to leaving the column, the polymer would flow through a final filter. The treated polymer would collect in a receiving container. The packed column would be disposed of entirely (not cleaned) at the end of the run. My question is: do you make, or are you aware of anyone who makes a 2 stage disposable filter, incorporating carbon in the first stage and a final particulate filtration in the second stage? Thanks for your help and advice. John Dohner jwdohner@yahoo.com **** Hidden Message ***** John Dohner 94028 USA Company: consultant E-mail: jwdohner@yahoo.com **** Hidden Message ***** jwdohner@yahoo.com
