公开(公告)号：EP0788561A1

公开(公告)日：1997-08-13

申请号：EP95939655.0

申请日：1995-10-30

申请人： Swenson Process Equipment Inc.

发明人： SCHRANZ, Martin, B.

IPC分类号： C30B35 ,  B01D9 ,  C30B7

CPC分类号： C30B7/00 ,  B01D9/0013 ,  B01D9/005

摘要： A surface-cooled fluid bed crystallizer apparatus and method are disclosed wherein submerged heat exchanger surfaces (typically heat exchanger tubes or plates through which a coolant is passed) are bathed with a stream of gas bubbles (preferably air). The gas bubbles increase localized velocity at the heat exchanger surfaces, improves heat transfer, reduces crystallization on the heat exchanger surfaces and gently keeps the crystals in suspension, thereby avoiding unwanted nucleation as is characterized by the use of mechanical circulation devices. By continuously removing the depleted magma and crystals, the crystallizer can be operated in a continuous mode.

公开(公告)号：EP0109822B1

公开(公告)日：1988-07-13

申请号：EP83306978.4

申请日：1983-11-15

申请人： Swenson Process Equipment Inc.

发明人： Rushton, William E. ,  Fakatselis, Thanassi E.

IPC分类号： B01D9/00 ,  B01D1/18

CPC分类号： B01D9/0009 ,  B01D9/0018

摘要： A method and apparatus for the crystallization of solids from liquids includes a vessel (8) having an elongate vertical spray chamber (10) which overlies and is in flow communication with a collection basin (22) for collecting slurry from the spray chamber. The collection basin has a cross-section larger than the cross-section of the spray chamber and preferably includes a side wall (24) which extends upwardly beyond the lower end (18) of the spray chamber (10) to define an opening between the wall of the basin and the spray chamber which communicates with the atmosphere. A blower (14) is located in the top of the spray chamber to draw air at substantially ambient atmospheric conditions through the opening between upper end of the basin and lower end of the spray chamber and upwardly through the chamber (10). The slurry solution which is to be concentrated and crystallized is sprayed into the chamber and directly contacts the air flowing through the chamber thereby resulting in evaporation and concentration of the sprayed slurry and and crystallization of solids therefrom. The slurry collected in the collection basin is recirculated and returned as a spray at the upper end of the chamber. If desired, the recirculated slurry may be heated prior to being returned as a spray at the upper end of the chamber and the heating may be achieved in a heat exchanger (36) so as to utilize waste heat in its operation; this may also be employed to condense the otherwise wasted vapour from a series of vacuum evaporators and further concentrate the product.

公开(公告)号：EP0109822A2

公开(公告)日：1984-05-30

申请号：EP83306978.4

申请日：1983-11-15

申请人： Swenson Process Equipment Inc.

发明人： Rushton, William E. ,  Fakatselis, Thanassi E.

IPC分类号： B01D9/00 ,  B01D1/18

CPC分类号： B01D9/0009 ,  B01D9/0018

摘要： A method and apparatus for the crystallization of solids from liquids includes a vessel (8) having an elongate vertical spray chamber (10) which overlies and is in flow communication with a collection basin (22) for collecting slurry from the spray chamber. The collection basin has a cross-section larger than the cross-section of the spray chamber and preferably includes a side wall (24) which extends upwardly beyond the lower end (18) of the spray chamber (10) to define an opening between the wall of the basin and the spray chamber which communicates with the atmosphere. A blower (14) is located in the top of the spray chamber to draw air at substantially ambient atmospheric conditions through' the opening between upper end of the basin and lower end of the spray chamber and upwardly through the chamber (10). The slurry solution which is to be concentrated and crystallized is sprayed into the chamber and directly contacts the air flowing through the chamber thereby resulting in evaporation and concentration of the sprayed slurry and and crystallization of solids therefrom. The slurry collected in the collection basin is recirculated and returned as a spray at the upper end of the chamber. If desired, the recirculated slurry may be heated prior to being returned as a spray at the upper end of the chamber and the heating may be achieved in a heat exchanger (36) so as to utilize waste heat in its operation; this may also be employed to condense the otherwise wasted vapour from a series of vacuum evaporators and further concentrate the product.

摘要翻译： 用于从液体中结晶固体的方法和装置包括具有细长的垂直喷雾室（10）的容器（8），其与收集池（22）重叠并与流体连通，用于从喷雾室收集浆料。 收集池具有比喷雾室的横截面大的横截面，并且优选地包括向上延伸超过喷雾室（10）的下端（18）的侧壁（24），以在喷雾室 盆壁和与大气连通的喷雾室。 鼓风机（14）位于喷雾室的顶部，以在基本环境的大气条件下通过盆的上端和喷雾室的下端之间的开口抽吸空气，并向上通过室（10）。 要浓缩和结晶的浆液被喷射到室中并直接接触流过室的空气，从而导致喷雾浆料的蒸发和浓缩，并使固体结晶。 收集在收集池中的浆料在室的上端被再循环并作为喷雾返回。 如果需要，再循环的浆料可以在作为喷雾器在室的上端返回之前加热，并且可以在热交换器（36）中实现加热，以便在其操作中利用废热; 这也可用于冷凝来自一系列真空蒸发器的另外浪费的蒸汽，并进一步浓缩产品。