公开(公告)号：US4670150A

公开(公告)日：1987-06-02

申请号：US790651

申请日：1985-10-24

申请人： Andrew K. Hsiung ,  Daniel L. Comstock ,  Robert D. Hagen

发明人： Andrew K. Hsiung ,  Daniel L. Comstock ,  Robert D. Hagen

IPC分类号： C02F1/00 ,  C02F5/02 ,  C02F5/06 ,  G01N1/10 ,  C02F1/54

CPC分类号： C02F5/02 ,  B01D61/147 ,  B01D63/062 ,  B01D2315/10 ,  B01D2317/04

摘要： A method for softening a fluid containing hardness constituents, comprising the steps of: (a) mixing the fluid with sufficient amounts of a softening agent, and previously precipitated hardness constituents in a reactor to establish a softening reaction in the reactor for precipitating a substantial portion of the hardness constituents contained in the fluid; (b) removing a portion of the fluid and precipitated hardness constituents from the reactor as a slurry and filtering the slurry through a cross-flow microfiltration module containing at least one elongated filtration tube, whereby substantially all of the precipitated hardness constituents are removed from the portion of the fluid exiting from the module as filtrate; and (c) returning at least a portion of the filtered out precipitated hardness constiuents exiting from the module to the reactor as the previously precipitated hardness constituents.

摘要翻译： 一种用于软化含有硬度成分的流体的方法，包括以下步骤：（a）将混合流体与足量的软化剂和预先沉淀的硬度组分在反应器中以在反应器中建立软化反应，以沉淀出大部分 包含在流体中的硬度成分; （b）作为浆料从反应器中去除一部分流体并沉淀出硬度成分，并通过包含至少一个细长过滤管的交叉流微量过滤组件过滤浆料，从而将基本上所有沉淀的硬度成分从 从模块中排出的部分流体作为滤液; 和（c）将从模块排出的至少一部分过滤出的沉淀硬度组分作为先前沉淀的硬度组分返回到反应器。

公开(公告)号：US5047154A

公开(公告)日：1991-09-10

申请号：US099622

申请日：1987-09-21

申请人： Daniel L. Comstock ,  Robert D. Hagen

发明人： Daniel L. Comstock ,  Robert D. Hagen

IPC分类号： B01D29/00 ,  B01D61/22

CPC分类号： B01D65/02 ,  B01D61/22 ,  B01D2315/10 ,  B01D2321/162

摘要： A method of increasing the time-averaged cross-flow filtration flux of a liquid through a porous filter medium over the period of a filtration run, comprising the steps of: (a) flowing the liquid transversely through the filter medium by establishing a pressure differential across the filter medium; and (b) maintaining the filtration flux rate through the filter medium at a preselected substantially constant value during the entire filtration run by applying a variable throttling pressure on the filtrate side of the filter medium and reducing the throttling pressure during the run to control the instantaneous value of the pressure differential as required to maintain the preselected flux rate, such flux rate being greater than the equilibrium flux rate.Also, a method of increasing the time averaged cross-flow filtration flux of a liquid through a porous filter medium, typically filter tubes, over the period of a filtration run, comprising the steps of flowing the liquid transversely through the filter medium by establishing a pressure differential across the filter medium, and commencing the filtration run by gradually increasing the flow rate over a sufficiently extended period of time to substantially prevent the intrusion of the particles of material being filtered out of the liquid into the filter medium per se.

摘要翻译： 一种在过滤运行期间通过多孔过滤介质增加液体的时间平均交叉流过滤通量的方法，包括以下步骤：（a）通过建立压力差使液体横向流过过滤介质 穿过过滤介质; 和（b）通过在过滤介质的滤液侧施加可变的节流压力，并且在运行期间降低节流压力以控制瞬时流量，在整个过滤运行期间通过过滤介质将过滤通量保持在预选的基本上恒定的值 根据需要保持预选通量速率的压差值，这种通量速率大于平衡通量速率。 此外，在过滤运行期间通过多孔过滤介质（通常是过滤管）增加液体的时间平均交叉流过滤通量的方法，包括以下步骤：使液体横向流过过滤介质，通过建立 通过过滤介质的压力差，并且通过在足够长的时间段上逐渐增加流速来开始过滤运行，以基本上防止被过滤的材料的颗粒从液体中侵入到过滤介质本身中。