公开(公告)号：US09032641B2

公开(公告)日：2015-05-19

申请号：US13749530

申请日：2013-01-24

Applicant: GALA INDUSTRIES, INC.

Inventor： Michael Eloo ,  Roger B. Wright ,  Robert G. Mann

IPC: F26B1/00 ,  F26B11/04 ,  F26B17/00 ,  F26B17/10

CPC classification number: F26B1/00 ,  F26B11/0404 ,  F26B17/008 ,  F26B17/105

Abstract: A method and apparatus for underwater pelletizing and subsequent drying of crystallizing polymers to crystallize the polymer pellets with out subsequent heating is shown in FIG. 5. High velocity air or other inert gas is injected into the water and pellet slurry line (120) toward the dryer near the pelletizer exit (102) at a flow rate from about 100 to about 175 m3/hour, or more. Such high-speed air movement forms a vapor mist with the water and significantly increases th speed of the pellets into and out of the dryer such that the polymer pellets leave the dryer with sufficient latent heat to cause self-crystallization within the pellets. A valve mechanism in the slurry line (150) after the gas injection further regulates the pellet residence time and a vibrating conveyor after the dryer helps the pellets to achieve the desired level of crystallinity and to avoid agglomeration.

Abstract translation: 用于水下造粒和随后干燥结晶聚合物以在随后的加热之后使聚合物颗粒结晶的方法和装置如图1所示。 高速空气或其它惰性气体以约100至约175m 3 /小时或更高的流速向造粒机出口（102）附近的水和颗粒浆料管线（120）朝向干燥器注入。 这种高速空气运动与水形成蒸汽雾，并且显着地提高了颗粒进出干燥器的速度，使得聚合物颗粒离开干燥器具有足够的潜热以在颗粒内引起自结晶。 在气体注入之后的浆液管线（150）中的阀机构进一步调节颗粒停留时间，并且干燥器之后的振动输送机帮助颗粒达到期望的结晶度并避免结块。