公开(公告)号：US3875019A

公开(公告)日：1975-04-01

申请号：US42857873

申请日：1973-12-26

申请人： SIR SOC ITALIANA RESINE SPA

发明人： COCUZZA GIOACCHINO ,  MONTORO ITALO ,  CALCAGNO BENEDETTO

IPC分类号： C07C29/10 ,  B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07C20060101 ,  C07C27/00 ,  C07C29/132 ,  C07C29/74 ,  C07C31/20 ,  C07C67/00 ,  C07C29/26 ,  C12F1/04

CPC分类号： B01D53/263 ,  C07C29/80 ,  Y02P20/52 ,  C07C31/202

摘要： An improved process for the separation of ethylene glycol from the dilute aqueous glycol solutions originating from the hydrolysis of ethylene oxide by multi-stage evaporation of the glycol solutions and subsequent rectification of the concentrated aqueous glycol solutions, wherein the improvement comprises: SUBJECTING THE DILUTE AQUEOUS GLYCOL SOLUTIONS TO MULTI-STAGE EVAPORATION AT DECREASING PRESSURES TO OBTAIN, IN THE LAST STAGE, AN AQUEOUS SOLUTION CONTAINING ABOUT 70 TO 80% BY WEIGHT OF GLYCOLS; SUBJECTING THE AQUEOUS GLYCOL SOLUTION COMING FROM THE LAST STAGE OF THE MULTI-STAGE EVAPORATION TO RECTIFICATION IN A RECTIFICATION COLUMN IN ORDER TO SEPARATE THE RESIDUAL WATER; REMOVING THE VAPOURS COMING FROM THE LAST STAGE OF THE MULTISTAGE EVAPORATOR AND USING THEM AS A HEATING MEANS IN THE REBOILER OF THE RECTIFICATION COLUMN AFTER PREVIOUS THERMAL OR MECHANICAL COMPRESSION; REMOVING THE CONDENSATE COMING FROM THE REBOILER OF THE RECTIFICATION COLUMN AND USING IT FOR WASHING OF THE VAPOURS GENERATED IN THE LAST STAGE OF THE MULTI-STAGE EVAPORATION, WEIGHT RATIOS OF WASH WATER TO VAPOURS GENERATED OF FROM ABOUT 1:1 TO 1:10 BEING MAINTAINED; REMOVING THE WASH SOLUTION FROM THE LAST STAGE OF THE MULTISTAGE EVAPORATION AND RECYCLING IT TO A PRECEDING STAGE, PREFERABLY TO THE FIRST.

公开(公告)号：US5368700A

公开(公告)日：1994-11-29

申请号：US992307

申请日：1992-12-21

申请人： David E. Bachmann

发明人： David E. Bachmann

IPC分类号： B01D3/38 ,  C12F1/04

CPC分类号： B01D3/38 ,  Y10S203/08 ,  Y10S203/17

摘要： A system and method for reducing hydrocarbons in wastewater includes an oil separator and a stripper tower. The tower has a housing that includes a stripper section and a condensation section. The stripper section includes a plurality of trays and steam inlet under the trays. The condensation section includes a plurality of trays and a pan tray having provisions to allow vapors to rise from the stripper section. The method includes having the oil separator remove the soluble oil from the wastewater stream which passes through the stripper section and has steam remove the hydrocarbons. The resulting vapors then contact cold process fluid which results in a heated process fluid stream. A portion of this heated process fluid stream is then mixed with crude so that hydrocarbons can be assimilated into the crude.

摘要翻译： 用于还原废水中的碳氢化合物的系统和方法包括油分离器和汽提塔。 塔具有包括汽提段和冷凝段的壳体。 汽提器部分包括托盘下面的多个托盘和蒸汽入口。 冷凝部分包括多个托盘和具有允许蒸汽从剥离器部分上升的设置的托盘。 该方法包括使油分离器从通过汽提段的废水流中除去可溶性油，并且蒸汽除去烃。 所得到的蒸气接触冷加工流体，导致加热的工艺流体流。 然后将该加热的工艺流体流的一部分与粗制物混合，使得烃可以被同化为粗品。

公开(公告)号：US5369031A

公开(公告)日：1994-11-29

申请号：US918713

申请日：1992-07-21

申请人： Brian S. Middleditch ,  Peter S. K. Lee

发明人： Brian S. Middleditch ,  Peter S. K. Lee

IPC分类号： B09C1/00 ,  B09C1/10 ,  C02F3/34 ,  C12P1/04 ,  C12S9/00 ,  C12F1/04 ,  C02F3/30

CPC分类号： C02F3/34 ,  B09C1/002 ,  B09C1/10 ,  C12P1/04 ,  B09C2101/00 ,  C02F2103/06

摘要： The present invention provides an economical and efficient method for the elimination and biodegradation of soil and groundwater containing polar organic solvents, especially acetone. The bioremediation methods of the present invention comprise contacting the bacteria Xanthomonas maltophilia or Bacillus thuringiensis with the contaminated medium under appropriate conditions. In addition, the present invention provides for a composition of matter useful in the bioremediation of a medium, e.g., groundwater or soil contaminated with polar organic compounds, such as acetone.

摘要翻译： 本发明提供了一种用于消除和生物降解含有极性有机溶剂，特别是丙酮的土壤和地下水的经济有效的方法。 本发明的生物修复方法包括在合适的条件下使细菌黄单胞菌属（Manthomonas maltophilia）或苏云金芽孢杆菌（Bacillus thuringiensis）与被污染的培养基接触。 此外，本发明提供了用于生物修复介质（例如被极性有机化合物如丙酮污染的地下水或土壤）的物质的组合物。