公开(公告)号：US4032412A

公开(公告)日：1977-06-28

申请号：US545681

申请日：1975-01-30

申请人： Alfred Hoppe ,  Walter Geistert

发明人： Alfred Hoppe ,  Walter Geistert

IPC分类号： B01D1/00 ,  B01D1/26 ,  B01D3/42 ,  C02F1/04

CPC分类号： C02F1/043 ,  B01D1/00 ,  B01D1/0082 ,  B01D1/26 ,  B01D3/4211

摘要： A system for optimal pressure control in a multistage evaporation unit comprising two or more series connected evaporation stages with at least one of the stages preceded by a heat source, where the fresh or feed solution is passed through heat exchangers in which it is heated by means of the vapors from the subsequent evaporation stages, and where a heat exchanger adapted to permit free flow of the vapor condensate through the heat exchanger inner portion or tube portion is arranged in the line through which the vapor leaves the higher-pressure evaporation stage.

公开(公告)号：US4303499A

公开(公告)日：1981-12-01

申请号：US10873

申请日：1979-02-09

申请人： Walter Geistert ,  Ulrich Kramer ,  Gottfried Klippel

发明人： Walter Geistert ,  Ulrich Kramer ,  Gottfried Klippel

IPC分类号： C10G67/04 ,  C10G53/00 ,  C10G67/00 ,  H01B3/20 ,  H01B3/22 ,  C10G73/02

CPC分类号： H01B3/22 ,  C10G2400/12

摘要： A process is provided for the production of a stable, age-resisting mineral oil composition which comprises subjecting a paraffin base mineral crude oil to distillation to produce a distillate fraction boiling in the range of 270.degree. to 400.degree. C., solvent dewaxing said distillate fraction, solvent extracting said dewaxed distillate portion to produce a solvate fraction and an extract fraction, refining said solvate fraction, concentrating and refining said extract fraction and adding said refined, concentrated extract portion with said refined solvate fraction.

摘要翻译： 提供了一种制备稳定的耐老化矿物油组合物的方法，其包括使石蜡基矿物原油经蒸馏以产生在270-400℃范围内沸腾的馏出物馏分，溶剂脱蜡所述馏出物 馏分，溶剂提取所述脱蜡馏出物部分以产生溶剂合物部分和提取部分，精炼所述溶剂化物部分，浓缩和澄清所述提取部分，并将所述精制浓缩提取物部分加入所述精制溶剂化物部分。