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公开(公告)号：US5167773A
公开(公告)日：1992-12-01
申请号：US465822
申请日：1990-01-16
申请人： James D. Eagan , Adrianus Welmers
发明人： James D. Eagan , Adrianus Welmers
CPC分类号： C10G7/00 , B01D3/143 , Y10S203/09 , Y10S203/16 , Y10S203/20
摘要： A distillation tower (1) has a plurality of liquid sidestream lines (5, 6, 7) and a multi-stage sidestream stripper (13) which includes a respective stripping section (14, 15, 16) for each sidestream line housed in a common, upright, cylindrical shell (28) which allows vapor to pass freely from each stage to the one above. Partial vaporization of each sidestream is achieved by applying a vacuum to the top of the stripper shell (point 21) and/or introducing strip gas at the bottom (point 20). Because the vapor passes serially through the stripping sections from the bottom of the stripper (13) to the top, the need to supply strip gas separately to the stripping sections and/or apply vacuum individually is avoided. The separation between the sidestream products is improved by including, in each stage, a rectification zone (22, 23, 24) positioned above the stripping section.
摘要翻译： 蒸馏塔（1）具有多个液体侧流线（5,6,7）和多级侧流汽提器（13），其包括用于每个侧流管线的相应汽提部分（14,15,16） 通常的，直立的圆柱形壳体（28），其允许蒸汽从每个阶段自由地传递到上述的一个阶段。 每个侧流的部分蒸发是通过在汽提器壳体（点21）的顶部施加真空和/或在底部（点20）处引入带状气体来实现的。 因为蒸汽通过汽提段从汽提器（13）的底部顺序地通过顶部，所以避免了单独地将汽提气体单独地供给到汽提部分和/或单独施加真空的需要。 通过在每个阶段中包括位于汽提部分上方的精馏区（22,23,24）来改善侧流产物之间的分离。
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2.发明授权Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery 失效从较不易挥发的组分（例如，不挥发成分）中回收溶液的相对挥发性组分。 如溶剂回收
公开(公告)号：US5632867A
公开(公告)日：1997-05-27
申请号：US325456
申请日：1995-02-27
CPC分类号： B01D3/343 , B01D1/305 , B01D3/143 , Y10S203/09
摘要： In a solvent recovery plant including a recovery or distillation tower from which solvent product is recovered overhead, an isothermal separator, preferably a cyclone, is used to separate liquid phase contaminant (i.e. oil in a lubricating oil extraction process) in overhead product and to feed the separated liquid to the recovery tower as reflux. In addition, a portion of the feed to the tower can be branched off and mixed with the overhead product to bring its temperature down to close to the dew point of the solvent vapor. In this way, flooding of the uppermost tower trays and distillation of oil overhead can be overcome.
摘要翻译： PCT No.PCT / US93 / 04724。 371日期：1995年2月27日 102（e）日期1995年2月27日PCT提交1993年5月18日PCT公布。 WO93 / 23131 PCT出版物 日期1993年11月25日在包括回收塔或蒸馏塔的溶剂回收设备中，从塔顶回收溶剂产物，使用等温分离器，优选旋风分离器，将液相污染物（即润滑油萃取过程中的油）分离在 并将分离的液体作为回流进料至回收塔。 另外，塔的进料的一部分可以被分支并与塔顶产物混合，使其温度降到接近溶剂蒸气的露点。 以这种方式，可以克服最上面的塔盘的溢流和顶部油的蒸馏。
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公开(公告)号：US4146461A
公开(公告)日：1979-03-27
申请号：US864213
申请日：1977-12-27
CPC分类号： C10G73/32
摘要： An improved DILCHILL* dewaxing process wherein waxy lubricating oil stocks are solvent dewaxed by contacting them with successive increments of cold dewaxing solvent at a plurality of points along the height of a vertical tower divided into a plurality of stages while agitating the oilsolvent mixture in each stage to provide substantially instantaneous mixing of the waxy oil and solvent thereby precipitating wax from the oil while avoiding the well known shock chilling effect. The improvement resides in adjusting the cold solvent addition to each stage in a manner so as to modify the temperature profile along the tower to ensure that the temperature drop per stage in the initial stages in which wax precipitation occurs is greater than the temperature drop per stage in the final or later stages in which wax precipitation occurs.* DILCHILL is a registered Service Mark of Exxon Research and Engineering Company.
摘要翻译： 改进的DILCHILL *脱蜡方法，其中蜡状润滑油原料经溶剂脱蜡，通过在沿着垂直塔的高度的多个点处连续增加冷脱蜡溶剂，分成多个阶段，同时在每个阶段搅拌油溶剂混合物 以提供蜡油和溶剂的基本上即时的混合，从而从油中沉淀出蜡，同时避免了众所周知的冲击冷却效果。 改进之处在于以以下方式调节每个阶段的冷溶剂添加量，以便改变沿着塔的温度分布，以确保发生蜡沉淀的初始阶段的每个阶段的温度降低大于每个阶段的温度下降 在发生蜡沉淀的最终或更后阶段。 * DILCHILL是埃克森美孚研究与工程公司的注册服务商标。
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公开(公告)号：US5152889A
公开(公告)日：1992-10-06
申请号：US802159
申请日：1991-12-04
申请人： Rudolph R. Savory , James D. Eagan
发明人： Rudolph R. Savory , James D. Eagan
CPC分类号： B01D33/60
摘要： A wash liquid distributor is described for applying liquid uniformly across a filter cake on a filter surface providing effective washing and exhibiting resistance to clogging and fouling. The wash liquid distributor consists essentially of, in combination, at least one elongated hollow distributor pipe mounted above the filter surface through which wash fluid is passed, each hollow distributor pipe having a multiplicity of closely, evenly spaced and axially aligned small holes located substantially along the top center line of said pipe and pointing away from the filter surface located beneath said pipe, an inner helical wire wrap around said pipe, the pitch of the winding of said wire being substantially the same as the spacing of the axially aligned holes and whereby each individual turn in the winding is spaced to pass substantially midway between adjacent pairs of the evenly spaced, axially aligned holes, a curved deflector plate located on top of the inner helical wire wrap and covers a portion of the circumference of said pipe, the center line of the deflector plate being substantially in alignment with the top center line of the pipe, and a final outer helical wire winding around the pipe holding the deflector plate in position, the pitch of the winding of this outer helix being substantially the same as the inner helix winding but about 180.degree. out of phase.
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