公开(公告)号：US06500310B1

公开(公告)日：2002-12-31

申请号：US09719624

申请日：2000-12-14

申请人： Robert Frank Dee ,  Marinus Van Zwienen

发明人： Robert Frank Dee ,  Marinus Van Zwienen

IPC分类号： B01D314

CPC分类号： C02F1/048 ,  B01D3/146

摘要： A process for treating waste water streams containing at least hydrocarbons and salts to yield a clean water product, a concentrated brine product and a hydrocarbon-rich product, which process includes the steps of: (a) feeding the waste water feed into a first distillation column at a stage in the range of from 0.05 to 0.15 from the top, wherein n represents the total number of theoretical stages of the first distillation column and has a value in the range of from 20 to 40; (b) drawing off a vapor stream at a stage in the range of from 0.55 to 0.75 from the top and feeding this vapor stream into the bottom of a second distillation column having m theoretical stages, with m having a value in the range of from 3 to 10; (c) drawing off the clean water product as the top fraction from the second distillation column and drawing off a bottom stream from the second distillation column, which is fed back into the first distillation column below the draw off of the vapor stream in step (b) at a stage in the range of from 0.60 to 0.85 from the top; (d) drawing off the concentrated brine product as the bottom fraction of the first distillation column; and (e) drawing off the hydrocarbon stream as the top fraction of the first distillation column.

摘要翻译： 一种用于处理含有至少烃和盐的废水流以产生清洁水产品，浓缩的盐水产物和富含烃的产品的方法，该方法包括以下步骤：（a）将废水进料送入第一蒸馏 塔的顶部从0.05至0.15的范围内，其中n表示第一蒸馏塔的理论级总数，其值在20至40的范围内; （b）从顶部抽出0.55至0.75范围内的蒸气流，并将该蒸汽流送入具有理论级的第二蒸馏塔的底部，其中m的值范围为 3至10; （c）从第二蒸馏塔抽出清洁水产品作为顶级馏分，并从第二蒸馏塔中抽出底部物流，该第二蒸馏塔在第一蒸馏塔中被反馈到低于蒸气流的蒸馏流的步骤 b）在从顶部的0.60至0.85范围内的阶段; （d）抽出浓缩的盐水产物作为第一蒸馏塔的塔底部分; 和（e）除去作为第一蒸馏塔顶馏分的烃流。

公开(公告)号：US06712882B1

公开(公告)日：2004-03-30

申请号：US10111643

申请日：2002-04-26

申请人： Johan Hendrik De Bie ,  Robert Frank Dee ,  Raymond Lawrence June ,  Marinus Van Zwienen

发明人： Johan Hendrik De Bie ,  Robert Frank Dee ,  Raymond Lawrence June ,  Marinus Van Zwienen

IPC分类号： B01D1900

CPC分类号： C02F1/048 ,  B01D5/009

摘要： A process for treating waste water from an industrial process for producing propylene oxide, which process involves the steps of: (a) subjecting the waste water to a multi-effect evaporation treatment resulting in a vaporous top fraction and a liquid bottom fraction containing the non-volatile contaminants; and (b) condensing at least part of the vaporous top fraction into a liquid stream which is subject to a stripping treatment resulting in an overhead stream containing volatile waste organic material and purified water as the liquid bottom stream.

摘要翻译： 一种用于处理来自工业生产环氧丙烷的工艺的废水的方法，该方法包括以下步骤：（a）使废水经受多效蒸发处理，导致蒸气顶部馏分和含有非水溶液的液体底部馏分 挥发性污染物 和（b）将至少部分蒸汽顶部馏分冷凝成液体料流，所述液体料流经过汽提处理，导致含有挥发性有机废物的塔顶馏出物和作为液体底部物流的纯化水。