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公开(公告)号：US4115243A
公开(公告)日：1978-09-19
申请号：US813143
申请日：1977-07-05
CPC分类号： C10G73/32
摘要： A process for dewaxing heavy distillate and residual petroleum oil stocks wherein a waxy oil stock, prediluted with 1-2.5 volumes dewaxing solvent, is cooled to about the depressed cloud point, wherein the cooled, prediluted waxy oil stock is treated with dewaxing solvent, in increments of 0.3-1.5 volumes each to a total dilution of 3.5 to 4 volumes solvent, under conditions of good mixing and cooling at about 1.degree.-8.degree. F/min, to a desired separation temperature for precipitating wax crystals and producing a dewaxed oil.
摘要翻译： 将重质馏出物和残余石油油原料脱蜡的方法，其中将预先稀释有1-2.5体积脱蜡溶剂的蜡状油原料冷却至约凹陷的浊点，其中将冷却的预稀释的蜡状油原料用脱蜡溶剂处理， 在约1〜8°F / min的良好混合和冷却条件下，以3.5〜4体积的溶剂的总稀释量，增加0.3-1.5体积，达到所需的分离温度，用于沉淀蜡晶体并生产脱蜡油 。
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公开(公告)号：US4115242A
公开(公告)日：1978-09-19
申请号：US813142
申请日：1977-07-05
CPC分类号： C10G73/32
摘要： A process wherein a light waxy petroleum distillate stock, having a viscosity less than about 200 SUS at 100.degree. F, is heated for melting any wax therein, wherein said heated waxy stock is incrementally mixed with a flowing stream of dewaxing solvent, having a temperature in the range of 40.degree.-80.degree. F, for forming an oil/solvent mixture at a temperature 5.degree.-10.degree. F below the depressed cloud point, and wherein the oil/solvent mixture is cooled at a uniform rate in the range of 1.degree.-8.degree. F/min. to a separation temperature in the range of +25.degree. to -40.degree. F for precipitating wax from said mixture.
摘要翻译： 将其中在100°F下粘度小于约200SUS的轻质蜡状石油馏出物原料加热熔化其中的任何蜡，其中所述加热的蜡状原料与脱蜡溶剂的流动流逐渐混合，所述脱蜡溶剂具有温度 在40°-80°F的范围内，在低于凹陷浊点的5°-10°F的温度下形成油/溶剂混合物，其中油/溶剂混合物以均匀的速率在 1°-8°F / min。 至+ 25℃至-40℃范围内的分离温度，用于从所述混合物中沉淀出蜡。
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公开(公告)号：US4115244A
公开(公告)日：1978-09-19
申请号：US813144
申请日：1977-07-05
CPC分类号： C10G73/32
摘要： A process for dewaxing a waxy petroleum distillate charge stock, wherein a mixture of waxy oil and solvent, heated for dissolving all solid wax therein, is cooled to a first temperature about 40.degree.-50.degree. F (22.degree. to 28.degree. C) above a selected separation temperature, and is held at such first temperature for a period of 1-2 minutes for equilibrating wax crystallization, wherein said oil-solvent mixture, at said first temperature, is cooled to a second temperature about 15.degree.14 20.degree. F (8.degree.-11.degree. C) above said separation temperature and is held at said second temperature for 1-2 minutes for equilibration of wax crystallization, wherein said oil-solvent mixture, at said second temperature, is cooled to said separation temperature, and wherein solid wax is separated from oil-solvent mixture at said separation temperature.
摘要翻译： 将蜡石油馏出物原料脱蜡的方法，其中加热用于溶解所有固体蜡的蜡质油和溶剂的混合物冷却至高于约40°-50°F（22-28℃）的第一温度 选择的分离温度，并且在该第一温度下保持1-2分钟以平衡蜡结晶，其中所述油溶剂混合物在所述第一温度下被冷却至约15°14°F的第二温度 （8°-11℃）高于所述分离温度并保持在所述第二温度1-2分钟以使蜡结晶化，其中所述油溶剂混合物在所述第二温度下被冷却至所述分离温度，和 其中固体蜡在所述分离温度下与油溶剂混合物分离。
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公开(公告)号：US4354921A
公开(公告)日：1982-10-19
申请号：US286946
申请日：1981-07-27
摘要： An improved method for solvent dewaxing oils in which a portion of the oil-solvent mixture is chilled to a temperature above its cloud point and a further portion is chilled to a temperature below its cloud point, the portions are combined to produce a mixture substantially at the cloud point, and the combined mixture further cooled to dewaxing temperature at which wax crystals are separated from the solvent and refined oil.
摘要翻译： 一种溶剂脱蜡油的改进方法，其中将一部分油溶剂混合物冷却至高于其浊点的温度，另一部分被冷却至低于其浊点的温度，将这些部分组合以产生基本上在 浊点，并将合并的混合物进一步冷却至脱蜡温度，在该温度下将蜡晶体与溶剂和精制油分离。
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公开(公告)号：US4375403A
公开(公告)日：1983-03-01
申请号：US340436
申请日：1982-01-18
CPC分类号： C10G73/06
摘要： A process for dewaxing a petroleum oil stock with a liquid solvent employing direct heat exchange cooling of solvent-oil mixture with an immiscible liquid chilling medium.
摘要翻译： 一种使用溶剂 - 油混合物与不混溶液体冷冻介质直接热交换冷却的液体溶剂脱蜡石油原料的方法。
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公开(公告)号：US3981789A
公开(公告)日：1976-09-21
申请号：US532961
申请日：1974-12-16
CPC分类号： B03C11/00 , C10G73/30 , C25F7/00 , B03C2201/02
摘要： A method of dewaxing oil which employs the application of reversing electromotive force to the oil while it is being chilled, in order to prevent adherence of the wax crystals.An apparatus combination for dewaxing oil. It includes an elongated container for chilling a body of waxy oil as it flows through. The container acts as one of a pair of electrodes for applying a reversable electromotive force to the oil in order to prevent any adherence. The wax may be recovered by separation following the application of the electrical force.
摘要翻译： 为了防止蜡结晶的附着，在油被冷却的同时对油进行反转电动势的脱蜡油的方法。
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