公开(公告)号：WO2006028778A2

公开(公告)日：2006-03-16

申请号：PCT/US2005/030688

申请日：2005-08-29

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： EKART, Michael, Paul ,  HUDSON, Andrew, Steven ,  ISAAC, Raymond ,  SAMITIER, Luciano, Dalmacio

IPC: F26B17/24 ,  F26B17/30

CPC classification number: F26B7/00 ,  B29B9/065 ,  B29B9/16 ,  B29B2009/165 ,  F26B5/08

Abstract: A process for feeding a slurry of thermoplastic synthetic polymer particles such as polyethylene terephthalate homopolymers and copolymers in combination with a liquid such as water at a liquid temperature greater than the normal boiling point of the liquid, under a pressure greater than the vapor pressure of the liquid at 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 than the vapor pressure of the liquid. There is also provided a process for decoupling the dried particles from the separation zone to an atmosphere having a pressure less than the vapor pressure of the liquid while maintaining the vapor pressure of the particles prior to decoupling equal to or above the vapor pressure of the liquid at the liquid temperature.

Abstract translation: 一种将热塑性合成聚合物颗粒如聚对苯二甲酸乙二醇酯均聚物和共聚物的浆料与液体比如水的液体比液体的液体温度大于液体的标准沸点的压力， 液体在液体温度下进入分离区如离心干燥器，并在分离区内：a。 将液体与颗粒分离，b。 干燥颗粒; 同时在等于或大于液体的蒸汽压力的高压下。 还提供了一种将干燥的颗粒从分离区分离到具有低于液体的蒸汽压的压力的气氛的过程，同时在解耦之前保持颗粒的蒸气压等于或高于液体的蒸气压 在液体温度下。

公开(公告)号：WO2007037968A2

公开(公告)日：2007-04-05

申请号：PCT/US2006/035364

申请日：2006-09-13

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： PARKER, Kenny, Randolph ,  LIN, Robert ,  ISAAC, Raymond ,  HALL, Duane, Alan

IPC: B01J8/22 ,  B01J8/00 ,  C08G63/88 ,  B01D63/06

CPC classification number: C08G63/89 ,  B01D61/18 ,  B01D61/20 ,  B01J8/006 ,  B01J8/007 ,  B01J8/22 ,  B01J8/228 ,  B01J2208/00539 ,  B01J2208/00672 ,  B01J2208/00761 ,  B01J2208/00778 ,  B01J2219/00162 ,  B01J2219/00252

Abstract: A process and apparatus which reduces the fines in a liquid discharge stream and/or increases the dryness of a solids discharge stream while under a pressure equal to or greater than the vapor pressure of the liquid. There is provided a process for separating particles such as polyethylene terephthalate or polyethylene naphthalate from a liquid in a slurry comprising: a. feeding a slurry comprising solid particles and a liquid into a within a separation zone maintained at a pressure equal to or greater than the vapor pressure of the liquid; b. contacting the slurry in the separation zone with a porous filter, optionally a microfilter, nanofilter, reverse osmosis filter, or ultrafilter, and separating liquid from the particles, wherein the liquid flows through the filter into an outer annulus defined as a space between the wall of the separation device and the filter, and said porous filter optionally having a terminal point beyond which the separated liquid does not pass from the outer annulus back through the filter; c. accumulating no liquid in the outer annulus or accumulating liquid in the outer annulus at a level below or in front of the terminal point, and continuously discharging the separated liquid from the outer annulus through a liquid outlet; d. decoupling the particles from the separation zone through the solids outlet to a low pressure below the vapor pressure of the liquid at the liquid temperature within the separation zone while maintaining a pressure on the particles prior to decoupling at or above the vapor pressure of the liquid within the separation zone.

Abstract translation: 一种在液体排出流中减少细粉和/或在等于或大于液体的蒸气压的压力下增加固体排出流的干度的方法和装置。 提供了一种用于从浆液中的液体分离颗粒如聚对苯二甲酸乙二醇酯或聚萘二甲酸乙二醇酯的方法，包括：a。 将包含固体颗粒和液体的浆料进料到保持在等于或大于液体蒸气压的压力的分离区内; 湾 使分离区中的浆料与多孔过滤器，任选的微过滤器，纳米过滤器，反渗透过滤器或超滤器接触，并将液体从颗粒中分离，其中液体流过过滤器，形成外壁，其被定义为壁之间的空间 分离装置和过滤器，并且所述多孔过滤器任选地具有终点，超过该终点，分离的液体不从外环通过过滤器; C。 在外环形空间中没有液体或在外环空中积聚液体在终点下方或前方的水平，并且通过液体出口连续排出来自外环的分离的液体; 天。 在分离区内的液体温度下将来自分离区的颗粒通过固体出口分离成低于液体蒸气压的低压，同时在等于或高于液体的蒸汽压力的去耦之前保持颗粒上的压力， 分离区。

公开(公告)号：EP1789742A2

公开(公告)日：2007-05-30

申请号：EP05794882.0

申请日：2005-08-29

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： EKART, Michael, Paul ,  HUDSON, Andrew, Steven ,  ISAAC, Raymond ,  SAMITIER, Luciano, Dalmacio

IPC: F26B17/24 ,  F26B17/30

CPC classification number: F26B7/00 ,  B29B9/065 ,  B29B9/16 ,  B29B2009/165 ,  F26B5/08

Abstract: A process for feeding a slurry of thermoplastic synthetic polymer particles such as polyethylene terephthalate homopolymers and copolymers in combination with a liquid such as water at a liquid temperature greater than the normal boiling point of the liquid, under a pressure greater than the vapor pressure of the liquid at 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 than the vapor pressure of the liquid. There is also provided a process for decoupling the dried particles from the separation zone to an atmosphere having a pressure less than the vapor pressure of the liquid while maintaining the vapor pressure of the particles prior to decoupling equal to or above the vapor pressure of the liquid at the liquid temperature.