| 摘要 |
<p>A process for feeding a slurry of thermoplastic synthetic polymer particlessuch as polyethylene terephthalate homopolymers and copolymers in combinationwith a liquid such as water at a liquid temperature greater than the normal boilingpoint of the liquid, under a pressure greater than the vapor pressure of the liquidat the liquid temperature, into a separation zone such as a centrifugal dryer,and within the separation zone: a. separating the liquid from the particles,and b. drying the particles; while under a high pressure equal to or greater thanthe vapor pressure of the liquid. There is also provided a process for decouplingthe dried particles from the separation zone to an atmosphere having a pressureless than the vapor pressure of the liquid while maintaining the vapor pressureof the particles prior to decoupling equal to or above the vapor pressure of theliquid at the liquid temperature.</p> |
