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    • 4. 发明授权
    • Aromatic oil pesticide adjuvant
    • 芳香油农药助剂
    • US5459122A
    • 1995-10-17
    • US233831
    • 1994-04-26
    • Thomas J. FordGilbert V. Chambers
    • Thomas J. FordGilbert V. Chambers
    • C10G45/02A01N25/02C10G65/04C10G65/08C10G67/04
    • C10G65/08A01N25/02
    • An aromatic oil having an aniline point less than 120.degree. F., a mutagenicity index based on The Modified Ames Test of less than 2.0, a benzene, naphthalene and methyl substituted benzenes and naphthalenes individual component concentrations less than 100 wppm, and a clay gel aromatics fraction content of at least 50 weight % based on aromatic oil, said aromatics fraction characterized in that it has a naphthene-benzenes and dinaphthenebenzenes content of at least 50 volume % based on aromatics fraction. The invention also relates to a process for preparing the aromatic oil which comprises the steps of selective solvent extraction, selective distillation and two-stage hydrotreating with removal of hydrogen sulfide and/or ammonia. The aromatic oils are useful in agricultural formulations due to their low environmental impacts.
    • 苯胺点小于120°F的芳香油,基于改性Ames试验的致突变性指数小于2.0,苯,萘和甲基取代苯和萘单独成分浓度小于100wppm,粘土凝胶 所述芳族化合物馏分的芳族化合物馏分含量至少为50重量%,所述芳族化合物部分的特征在于其基于芳族化合物部分具有至少50体积%的环烷 - 苯和苊萘含量。 本发明还涉及一种制备芳香油的方法,包括选择性溶剂萃取,选择性蒸馏和两步加氢处理以除去硫化氢和/或氨的步骤。 由于环境影响小,芳香油在农用配方中很有用。
    • 8. 发明授权
    • Solvent extraction process involving membrane separation of extract
phase and/or intermediate zone phase
    • 涉及提取相和/或中间区相的膜分离的溶剂萃取过程
    • US5435918A
    • 1995-07-25
    • US74573
    • 1993-06-10
    • Adrianus WelmersLaura E. Black
    • Adrianus WelmersLaura E. Black
    • B01D11/04B01D61/02B01D69/12B01D71/56C10G21/00C10G21/20C10G21/28C10G31/11C10G53/04B01D61/04
    • B01D61/025B01D69/125C10G21/00C10G21/28C10G31/11
    • The solvent extraction of aromatics containing oil using a selective aromatics extraction solvent to produce an aromatics rich extract phase and an oil rich/aromatics lean raffinate is improved by the steps of subjecting the extract phase to a membrane separation step to produce a permeate phase and a retentate phase passing the retentate phase to a settling zone wherein the retentate phase spontaneously separates into two liquid phases, and recycling the upper phase to the extraction zone, either to the feed inlet or to the bottom of the extract reflux zone to thereby increase the raffinate oil recovered from the extraction tower. Alternatively or in addition to the above, a side stream can be taken from an intermediate zone of the extraction zone (e.g. extraction tower) and fed to a membrane separation to produce a solvent rich permeate and an oil rich retentate. The solvent rich permeate is recycled while the oil rich retentate is fed to a settling zone wherein it will spontaneously separate into an oil rich pseudo raffinate upper phase which is recovered and into a solvent rich pseudo extract bottoms phase which is recycled to the solvent extraction zone, preferably at a point below that at which the side stream was withdrawn. The membrane separation zone preferably employs interfacially polymerized membranes under reverse osmosis conditions.
    • 使用选择性芳族化合物萃取溶剂溶剂萃取含芳烃的油,以产生富含芳烃的萃取相和富油/芳族贫油萃取液,通过以下步骤进行改进:将提取相进行膜分离步骤以产生渗透相和 滞留相通过滞留相进入沉降区,其中滞留相自发分离成两个液相,并将上相再循环到提取区,或者进入提取回流区的进料入口或底部,从而增加萃余液 从提取塔回收的油。 或者或除了上述之外,侧流可以从萃取区(例如萃取塔)的中间区取出,并进料到膜分离以产生富溶剂的渗透物和富含油的滞留物。 富含溶剂的渗透物被再循环,同时将富油滞留物进料到沉降区,其中它将自发分离成富油的假提余液上相,并回收到富含溶剂的假萃取物底部相中,该相再循环到溶剂萃取区 ,优选在低于侧流被抽出的点的点以下。 膜分离区优选在反渗透条件下使用界面聚合的膜。
    • 10. 发明授权
    • Controlling chilling tower profile for dilution chilling dewaxing of
600N waxy oil
    • 控制600N蜡质油稀释冷冻脱蜡的冷却塔型材
    • US5401383A
    • 1995-03-28
    • US119771
    • 1993-09-10
    • Patrick C. Ewener
    • Patrick C. Ewener
    • C10G73/06C10G73/32C10G43/08
    • C10G73/32C10G73/06
    • The incremental solvent dilution chilling of 600N waxy oils in a staged agitated chilling tower using cold solvent injection is improved in terms of feed filter rate with respect to a 600N waxy oil having a final boiling point of >600.degree. C. and a mean boiling point of about 500.degree. C. when the solvent dewaxing process is practiced under conditions of cold solvent injection such that there is an equal chilling rate/stage profile as compared to an equal temperature drop/stage profile in the chilling tower and with respect to a 600N waxy oil having a final boiling point of 600.degree. C. and a mean boiling point of about 500.degree. C. when the solvent dewaxing process is practiced under conditions of cold solvent injection such that there is an equal temperature drop/stage profile as compared to an equal chilling rate/stage profile in the chilling tower.
    • 在使用冷溶剂注入的分级搅拌冷却塔中600N蜡质油的增量溶剂稀释冷却方面相对于终沸点> 600℃的600N蜡状油的平均沸点提高了进料过滤速率, 当溶剂脱蜡过程在冷溶剂注入条件下进行时,与冷却塔中的相同温度下降/阶段曲线相比,与冷却塔相比,具有相同的冷却速率/阶段分布,并且相对于600N 当溶剂脱蜡过程在冷溶剂注入条件下进行时,具有终沸点为600℃,平均沸点为约500℃的蜡状油,使得与 在寒冷的塔中平均冷却速度/阶段轮廓。