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    • 8. 发明申请
    • SEPARATION OF WATER FROM HYDROCARBONS
    • 从石油分离水
    • WO2009070255A2
    • 2009-06-04
    • PCT/US2008/013047
    • 2008-11-21
    • EXXONMOBIL RESEARCH AND ENGINEERING COMPANYFALKINER, Robert, J.KAUL, Bal, K.CAMPBELL, Ian, D.
    • FALKINER, Robert, J.KAUL, Bal, K.CAMPBELL, Ian, D.
    • C10G33/04
    • C10G33/04
    • A method for the removal of dissolved water or water and ice from hydrocarbon liquids such as petroleum refinery fuels or natural gas liquids in a manner which enables the fuels to be readily treated by the coalescence/separation technique while reducing the potential for plugging filters and other equipment with ice crystals. Free water or water/ice is removed from the liquid hydrocarbons by contacting the hydrocarbon feed with a treating agent which as an affinity for water prior to subjecting the mixture to coalescence/separation. The treating agent is preferably a co-solvent for the water and the hydrocarbon such as an alcohol e.g. methanol. The treating agent and water are separated from the hydrocarbon component during the coalescence/separation and recirculated to the feed with the composition of the recycle aqueous phase being controlled to achieve the desired level of water removal to meet relevant product specifications. Consistent with the removal of the water during the coalescence/separation, the water concentration of the recycle loop containing the co-solvent/water blend gradually increases with removal of the water from the feed. This progressive increase in water level can be compensated by controlled addition of pure co-solvent to the recycle coupled with continuous or periodic dumping of excess mixture. Alternatively, the circulating mixture may be subjected to continuous or batch regeneration or disposed of in any other way which is convenient and economical.
    • 一种从烃类液体如石油炼厂燃料或天然气液体中除去溶解的水或水和冰的方法,使燃料能够通过聚结/分离技术容易地处理,同时降低堵塞过滤器等的可能性 设备有冰晶。 通过使烃进料与作为水的亲和性的处理剂接触使烃混合物进行聚结/分离之前,从液体烃中除去游离水或水/冰。 处理剂优选是用于水和烃的共溶剂,例如醇如 甲醇。 在聚结/分离过程中将处理剂和水从烃组分中分离出来,再循环到进料中,再循环水相的组成被控制以达到所需的除水水平以满足相关的产品规格。 与在聚结/分离期间除去水一致,含有助溶剂/水混合物的再循环回路的水浓度随着从进料中除去水而逐渐增加。 这种水平的逐渐增加可以通过控制向循环中加入纯的助溶剂以及连续或定期倾倒过量混合物来补偿。 或者,循环混合物可以以方便和经济的任何其它方式进行连续或间歇再生或处理。