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    • 4. 发明申请
    • System and a method for extracting wax from pulp fibers and paper products
    • 系统和从纸浆纤维和纸制品中提取蜡的方法
    • US20070227944A1
    • 2007-10-04
    • US11393477
    • 2006-03-30
    • Roger Campbell
    • Roger Campbell
    • C10G73/06
    • C10G73/06
    • A system and a method for extracting wax from pulp fibers and/or paper products are provided. The system and method may implement a continuous extraction vessel that can have one or more extraction stages. A single or multi-staged continuous extractor would provide solvent flow which counters the cellulosic materials within the vessel so that the solvent becomes more concentrated with the dissolved wax. This will reduce the volume of solvent necessary to achieve the same extraction efficiency and reduce the energy necessary to remove the solvent from the wax. In another embodiment, the temperature of the solvent can be increased by operating the extractor under a pressure greater than atmospheric pressure.
    • 提供了一种用于从纸浆纤维和/或纸制品中提取蜡的系统和方法。 该系统和方法可以实现可以具有一个或多个提取阶段的连续提取容器。 单级或多级连续萃取器将提供与容器内的纤维素材料相反的溶剂流,使得溶剂变得与溶解的蜡更浓缩。 这将减少实现相同萃取效率所需的溶剂体积并降低从蜡中除去溶剂所需的能量。 在另一个实施方案中,通过在大于大气压的压力下操作萃取器可以提高溶剂的温度。
    • 8. 发明授权
    • Petroleum-wax separation
    • 石油蜡分离
    • US6024862A
    • 2000-02-15
    • US221064
    • 1998-12-28
    • Michael D. AckersonSeyed-Hamid ArabshahiRobert E. Babcock
    • Michael D. AckersonSeyed-Hamid ArabshahiRobert E. Babcock
    • C10G73/02C10G73/06
    • C10G73/025C10G73/06
    • A process for dewaxing including the steps of mixing a waxy feedstock near its pour point with an ambient or below ambient temperature solvent essentially free of a selected cosolvent, to form a solvent/feedstock mixture, essentially free of a selected cosolvent, and subsequently adding the cosolvent to the solvent/feedstock mixture to cause instantaneous precipitation of wax on addition of cosolvent with the amount of wax precipitation being controlled by the quantity and temperature of cosolvent added. The cosolvent is essentially completely miscible with the solvent, but immiscible with the oil and wax. For example, alcohols (methanol, ethanol, propanol), ketones (ketene, acetone), amines, etc. The process of the present invention provides the advantages of lower solvent ratios (higher solvent recovery), higher filtration temperatures, "environmentally compatible" solvents, rapid filtration rates, and debottlenecking of existing dewaxing plants.
    • 一种脱蜡方法,包括以下步骤:在其倾点附近将蜡质原料与基本上不含所选助溶剂的环境温度或低于环境温度的溶剂混合,形成基本上不含所选助溶剂的溶剂/原料混合物,随后将 共溶剂加入到溶剂/原料混合物中,引起蜡在加入共溶剂时的瞬间沉淀,蜡沉淀量由加入的助溶剂的量和温度控制。 共溶剂基本上与溶剂完全混溶,但与油和蜡不混溶。 例如,醇(甲醇,乙醇,丙醇),酮(乙烯酮,丙酮),胺等。本发明的方法提供了较低溶剂比(更高的溶剂回收),更高的过滤温度,“环境相容” 溶剂,快速过滤速率和现有脱蜡设备的脱瓶。