共查询到18条相似文献,搜索用时 156 毫秒
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大庆馏分油脱蜡脱油工艺 总被引:2,自引:2,他引:0
上海高桥石油化工公司炼油厂3号酮苯脱蜡脱油装置的设计是在总结各炼油厂酮苯脱蜡脱油装置操作经验并综合近几十年来酮苯脱蜡脱油装置设计和节能改造经验的基础上进行的。这套装置以处理减压三线原料为主,采用一段脱蜡、二段脱油工艺。其主要产品为半精蜡、全精蜡、各种牌号润滑油(75SN、100SN、250SN)及催化裂化原料。工艺特点为:多点稀释;蜡下油液循环;多效蒸发。两年来的实践证明:装置的工艺流程比较先进、可靠、完善;主要产品润滑油和食品蜡能满足市场需要,尤其食品蜡含油量比较低;经济效益显著.经测算,年销售收入32648万元,创利税9497万元。 相似文献
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本文介绍了稀释冷冻脱蜡工艺研究开发及工业生产装置运转情况。经实验室多次反复研究指导工业试验及装置改造,实现了工周期运转。工业装置运转及标定确认该工艺技术先进,操作灵活,适应性强,较常规法酮苯脱蜡工艺过渡速度快、油收率高、蜡含油低、能耗低、效益好。 相似文献
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酮苯脱蜡脱油是利用丁酮一甲苯二元混合物对原料中的油、蜡具有不同的溶解能力和油与蜡的熔点差,利用物理溶解和解析方法进行蜡和去蜡油生产.对溶剂选用、脱蜡方法及国内外新技术发展,新工艺、新设备的应用效果进行了阐述,说明了酮苯脱蜡脱油装置向节能降耗、优化控制、设备大型化方向发展的趋势,最终实现节能降耗,产品收率最大化. 相似文献
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加氢裂化尾油酮苯脱蜡研究 总被引:4,自引:1,他引:3
通过对中国石化上海高桥分公司炼油事业部140万t/a加氢裂化装置的加氢裂化尾油进行酮苯脱蜡试验,考察了加氢裂化尾油通过酮苯脱蜡工艺生产石蜡及高品质基础油的可行性;同时对加氢裂化尾油掺合减压二线馏分油对试验结果的影响进行了考察。试验结果表明:经适当的工艺调整,加氢裂化尾油可以通过酮苯脱蜡得到质量较好的脱蜡油和含油蜡,脱蜡油可作为润滑油基础油的优良调合组分;加氢裂化尾油脱蜡过滤速度较慢,可采用脱蜡助剂并可适当提高过滤温度来提高过滤速度;减二线馏分油中掺合一定比例的加氢裂化尾油,可提高脱蜡油的收率和粘度指数、旋转氧弹等,改善含油蜡的质量。 相似文献
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以高桥石化炼油一部1号蒸馏减压四线馏分油为原料,开展了酮苯一段脱蜡两段脱油、一段脱蜡三段脱油和两段脱蜡两段脱油的工艺流程优化试验。试验结果表明,两段脱蜡两段脱油工艺具有最高的脱蜡油、脱油蜡收率及最低的脱油蜡油含量,为开展"老三套"润滑油基础油优化整合改造提供了技术支持。 相似文献
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本文介绍了 DK 型静态混合器在酮苯蜡脱油装置上的应用状况。一、前言大连石油化工公司三酮苯装置于1986年6月由单一的脱蜡装置改造成为脱蜡—脱油联合装置。蜡脱油的日的是除去脱蜡蜡膏中的低熔点蜡及蜡晶体之间所包含的油,从而获得低含油高熔点的蜡。其原理是含油蜡膏在尽量不破坏其结品状态的情况下,加入一定的稀释溶剂,保证一定的温度,使溶 相似文献
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《Egyptian Journal of Petroleum》2015,24(3):241-245
The dewaxing of paraffinic lube stocks is an essential step in the production of lubricants to improve the operability of machines especially in winter. The present work deals with study of the urea dewaxing process of two types of Egyptian vacuum distillates. The effect of different compositions of methanol to water saturated with urea and yield of the oil, percent of wax, pour point, refractive index, viscosity, viscosity index and specific gravity of the oil produced from the two types of distillates (I and II) were evaluated. The operating conditions of the urea adduct formation with n-paraffins using methanol to water mixture achieved the best pour point at −3.88 °C from an initial temperature of 4.4 °C for distillate I at (25/75) methanol to water. At the same ratio of methanol to water the best specific gravity of oil produced changed from 0.865 to 0.867, with viscosity index of 80. Percent yield of 50% for oil and percent wax of 50% were obtained. Results for distillate II, of higher specific gravity, are comparatively higher than those for distillate I. Experiments were carried out at room temperature. 相似文献
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Sustainability in flow condition by maintaining the pour point and cloud point in storage and transportation of crude oil is always a challengeable task for petroleum industry. Thus solvent dewaxing is an effective process used in oil refinery for monitoring before the transportation of crude oil in pipelines with an efficient and selective blended chemical. The present work describes the solvent dewaxing process through by analysis of basic fundamental interactions with computations of different acoustic parameters in presence of a high frequency ultrasonic wave. Experiments were performed to investigate the molecular interaction in rheological properties of waxy crude oil by blended solvent over a temperature range of 293 K to 323 K. The wax yield efficiency in the crude oil indicates that the performance of solvents blends depends on its mole fraction, compatibility of blends and on temperature of treatment. Addition of sonicated solvent blends in the ratio of 10:1, 15:1 and 20:1 improves flow conditions in crude oil pipe lines and increases its pour point. The sonication study was also designed by artificial neural network (ANN) model using R-Software which has been developed for ultrasonic velocity and other related parameters. The proposed ANN model for dewaxing of crude oil with blended solvent in different operating conditions provides comparable results with average absolute deviation (AAD) less than 0.5%. 相似文献
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润滑油加氢脱蜡技术进展 总被引:9,自引:2,他引:7
论述了润滑油脱蜡的意义,综述了国内外催化脱蜡、异构脱蜡、临氢降凝、蜡异及组合工艺的最新发展和工业应用情况,担子同发展我国加氢脱蜡技术的建议。 相似文献
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提高酮苯脱蜡装置油蜡综合收率的工艺措施 总被引:2,自引:0,他引:2
对中国石油化工股份有限公司荆门分公司酮苯重套装置加工HVI500N的原料性质、溶剂组成、溶剂含水、过滤操作、以及一段滤液质量等进行了分析。生产实践证明,通过优化工艺操作,将溶剂中水质量分数控制在0.5%左右,溶剂中丁酮质量分数控制在50%,投用一段脱油滤液作脱蜡二次稀释溶剂工艺,油蜡综合收率可提高约8个百分点。 相似文献
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Most of the country's oil units are primarily oriented toward production of lube oils. The by–products formed are used as components of furnace residual fuel oil. Even the slack wax obtained in dewaxing of selectively refined raffinates goes into furnace residual fuel oil. The slack wax contains from 80 to 90% hard waxes which, like dewaxed oil, are a valuable petroleum product. 相似文献