共查询到19条相似文献,搜索用时 311 毫秒
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本文简要介绍了利用减五线馏分油制取高熔点微晶蜡的技术改造方案。对酮苯脱蜡脱油装置生产中的操作调整、存在问题及以后的加工工艺提出了建议。 相似文献
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酮苯脱蜡脱油是利用丁酮—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脱油蜡和脱蜡油生产。简述了酮苯装置的传统停工步骤,提出用脱蜡油滤液代替新鲜溶剂作为置换介质的停工优化方案,经过实践,有明显的节能降耗效果。 相似文献
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为提高酮苯装置脱油蜡收率,大庆炼化公司于2004年对工艺进行了改进。具体改进措施有:①保证原料质量和性能稳定性;②控制溶剂质量,及时调整系统溶剂比;③增加全滤液循环量;④降低脱油系统的操作温度并调整溶剂比;⑤保证过滤效果;⑥加强真空密闭系统的操作;⑦控制好脱油蜡的熔点。技术改进后,酮苯脱蜡装置脱油蜡综合收率提高了1.47%。 相似文献
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通过对不同原料进行酮苯溶剂脱蜡、脱油试验,分析了不同原料脱蜡、脱油试验所得的脱蜡油、脱油蜡的质量。并利用气相色谱、红外光谱等分析仪对脱蜡油、脱油蜡的化学结构组成分析。试验表明:酮苯溶剂脱蜡、脱油技术可以应用范围较广的各种原料。 相似文献
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在酮苯脱蜡装置生产过程中应用助滤剂R1 5 0 ,可以使脱蜡段和脱油段过滤机的过滤速度均提高一倍左右 ,从而提高装置处理能力。具体实验表明 ,添加助滤剂R1 5 0对脱蜡油的质量无影响 ,并可使其收率略有提高 相似文献
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文章介绍了利用酮苯脱蜡装置的富裕低熔点蜡为主要原料,结合利用减四线含油蜡,采用发汗窄馏分切割脱油工艺与溶剂脱油工艺对原料进行预处理,联合白土精制工艺生产优质半精炼蜡。叙述了原料的来源、实验室产品试制和装置生产全过程。 相似文献
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介绍了以甲基异丁基酮(MIBK)和甲乙酮(MEK)为溶剂进行脱蜡脱油生产微晶蜡的试验研究,对溶剂脱蜡脱油过程的各种工艺条件进行了考察。结果表明,与采用常规溶剂的过程相比,其过滤速度和微晶蜡产品的收率都得到提高,而且微晶蜡的含油量达到小于1%的食品级标准要求。MIBK—MEK拥有的良好的选择性使其在溶剂脱蜡脱油生产微晶蜡工艺中有较好的应用前景。 相似文献
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Vacuum gas oil and spindle oil obtained from the vacuum distillation of paraffinic crude oil from the Western Desert region of Egypt were utilized for transformer oils production. The vacuum gas oil, spindle oil and blends therefrom containing different percentages of these oils and were subjected to aromatic extraction, dewaxing catalytic hydrogenation processes. The aromatic extraction process used N-methyl-2-pyrrolidone as solvent, for a feed ratio of 0.7:1 (wt/wt) at an extraction temperature of 55 °C, while in the dewaxing process the wax is removed by chilling the raffinate at − 42 °C using MEK-toluene (60:40,vol/vol). The hydrofinishing process was achieved in a pilot plant using NiO–MoO3/Al2O3 catalyst. These refining processes improved the viscosity indices and the pour points of the resulting oils and removed most of the polar impurities. It was found that, the transformer oil formulated from 7:3 b.w. vacuum gas oil:spindle oil respectively meets the IEC 60296-2003 standard specifications requirements. Its sulfur content is very low and non-corrosive. The gassing tendency is also low due to its low aromatic content. Further, the electrical properties which are significant for transformer oils fulfill the standard specifications as a result of the low water content and polar contaminants. Moreover, addition of 2,4-dimethyl-6-tertiary butyl phenol increases the oxidation stability of the produced oil, by acting as a free radical inhibitor. 相似文献
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尿素络合法生产重质液体石蜡的工艺研究 总被引:4,自引:0,他引:4
以大庆直馏柴油为原料 ,经异丙醇尿素脱蜡制得纯度较高的重质液体石蜡和低凝点脱蜡油。研究了络合反应温度、尿油比、反应时间以及络合物洗涤次数和洗涤油用量对工艺过程的影响 ,并得出了适宜的生产条件 相似文献
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Different subsequent refining techniques including solvent dewaxing and solvent extraction have been used to produce lubricating base oil from slop wax waste by-product. The solvent dewaxing technique was performed using two different solvent mixtures of methyl ethyl ketone and toluene with and without benzene at different dilution solvent ratios and at different dewaxing temperatures. The solvent extraction technique was carried out using N-methyl-2-pyrrolidone solvent at 90 °C and at constant dilution solvent ratio of 3:1 by weight. The resulting data revealed that the highest yield of lubricating base oil having the lowest pour point (−6 °C) and the highest iso- and cyclo-paraffins to n-paraffins ratio (5.11) is obtained by solvent dewaxing process only. While the lowest yield of lubricating base oil having the highest pour point (−1 °C) and the lowest iso- and cyclo-paraffins to n-paraffins ratio (4.08) is obtained using solvent dewaxing followed by solvent extraction process. These lubricating base oil products, especially the one that having the lowest pour point (−6 °C) matches the principal characteristics of AX 973853 type of premium low viscosity textile machinery oils obtained by Mobile Velocite Oil Company. 相似文献