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利用溶剂萃取法精制催化柴油以达到降低柴油氧化沉渣和生产新标准环保柴油的目的。对溶剂法精制柴油装置的开发、设计及应用进行了总结。通过对溶剂法精制柴油装置与加氢精制柴油装置进行的实验比较,结果表明,溶剂法柴油精制装置适用于低硫原油生产的催化柴油的精制,为炼油厂改善提高催化柴油质量提供了有效途径。 相似文献
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催化裂化柴油的络合萃取精制 总被引:17,自引:0,他引:17
采用萃取分离方法从石油烃中分离极性有极物具有高效性和高选择性。用95%乙醇和微量金属离子组成的复合溶剂对催化裂化柴油进行了络合萃取研究。 相似文献
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由于国家对柴油质量要求的不断提高,许多炼油厂和科研单位已将柴油质重问题作为重点研究对象,并取得了一定的成果。文中主要在对比目前催化裂化柴油所采用的各种精制方法的基础上,论述了发展催化裂化柴油非加氢精制技术的重要性,并详细介绍了该技术的最新进展和研究结果。从各种催化裂化柴油非加氢精制技术的研究结果来看,它们都取得了良好的脱氮效果,柴油的安定性得到了很大提高,精制后的柴油质量都达到了一级品或优级品的要求,产品收率最低也达到了96%以上,具有良好的应用价值。根据目前国内柴油生产的现状,在这些研究结果的基础上,提出了切实可行的建议。 相似文献
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为有效利用催化柴油溶剂精制工艺的副产黑油,采用正交试验法进行了降低黑油中残存溶剂含量的水洗实验研究。确定了最佳水洗工艺条件:水洗温度90℃、水与黑油体积比0.5:1、表面活性剂加入量0.1%、水洗时间20min。在此条件下,水洗后黑油中溶剂含量可降为1.5%。利用水洗后的黑油与糠醛废油、半沥青调合,可以调合出100号甲道路沥青,调合沥青配方为:水洗后的黑油加入量为6%~8%,糠醛废油加入量14%-19%,其余为半沥青。 相似文献
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试验室和工业试验表明,催化柴油中添加0.5%的YLC-1剂,能显著降低催化柴油中的实际胶质和氧化总不溶物,胶持脱除率为54-83%,对于低硫从催化柴油,化学精制柴油经适当调合后可达到合格品甚至一级品的标准,其精制工艺简单,投资少,成本低。 相似文献
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采用加速氧化法对辽河炼油厂焦化柴油进行精制,考察了影响精制柴油色度的各种因素,确定最佳精制工艺条件为:氧化剂用量1.5%~2.5%,反应温度40~70℃,反应时间15~30min,沉降时间不低于30min,搅拌速度不低于600r/min,洗脱剂用量不低于1.0%.在此最佳条件下,产品收率为97.6%,各项指标均符合国家柴油质量标准. 相似文献
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柴油络合脱硫精制研究 总被引:5,自引:0,他引:5
基于用金属氯化物可以与有机含硫化合物生成水溶性的络合物而加以去除的原理,通过对比DMSO、DMF的脱硫效果,决定采用DMF作为络合萃取的萃取剂。在综合对比NiCl2、FeCl3、CuCl2脱硫能力、腐蚀性能及价格的基础上优选出最佳的FeCl3络合剂。利用均匀设计实验方法进行了络合实验,并回归出相关的数学方程。在数学分析的基础上得出了最佳的络合萃取条件,即在DMF为97.7%,FeCl3为1.1%,极性溶剂为1.2%时,可以达到最佳的络合脱硫效果。同时实验结果还表明,采用络合萃取很难将硫脱至400×10-6(w)以下。 相似文献
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Abstract Coker diesel oil is refined by extraction of furfural adding assistant in this study. The influences of different operating conditions, such as the amount of assistant, the solvent/oil ratio, the refining temperature, the refining time, and the settlement time, on the quality of refined oil were investigated in batch experiments, and suitable operating conditions under which coker diesel oil refined can meet product qualify specifications of 0# diesel oil were given out. These had been verified in continuous experiments, i.e., the amount of additive was 8 g/kg, the refining temperature was 70°C, the solvent/oil ratio (v) was 1.0, the settlement time was 30 min, and refining time was 30 min. The experimental results show that the influence of basic nitride on the stability of coker diesel oil is predominant. 相似文献
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介绍了石油大学(北京)开发的重油催化裂化柴油RS剂精制新技术及其工业应用情况,该技术能显著提高重油催化裂化柴油的安定性,精制油安定性达到国家一级品标准,工艺过程简单,加工费用低,已在国内多个炼厂应用。 相似文献
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Li Junling Zheng Tinglu Han Zhaping 《中国炼油与石油化工》2006,(3):57-60
The method for refining the straight-run diesel fuel was studied in laboratory scale in order to make the acid number of diesel fraction comply with the standard while removing the naphthenic acids contained in diesel without causing environmental pollution. After comparing the effect of refining using three solvents, the isopropyl alcohol-HOA was specified as the best solvent. Meanwhile, the relationship between the acid number of diesel fraction and the amount of solvent used and the relationship between the concentration of solvent and temperature and the stability of diesel in terms of its acid number were also investigated. Experimental results had shown that when the mass fraction of the HOA-IPA solvent was 20% at a dosage of 17 mL of the solvent and a temperature of 30℃, the acid number of the refined diesel fraction was 0.015 mg KOH/g with a good stability of acidity in the diesel fraction, 相似文献
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Y.-F. Cong W. Huang K.-J. Liao X.-Q. Deng L. Kang 《Petroleum Science and Technology》2013,31(14):1648-1655
Abstract Modification and blending technique based on paraffin and microcrystalline wax were the main direction of integrated utilizing and tapping paraffin resource. According to the mechanism of hydrocarbons' oxidation reaction, a kind of organic compound of manganese was chosen to be catalyst, a certain proportional paraffin and microcrystalline wax was adopted as raw material, and under certain conditions catalyzed oxidation reaction took place, a sample which could be used as a substitute for natural carnauba wax was obtained. Then its melting point was enhanced by physical blending and met the requirements of the standard. Combined with oxidation reaction mechanism, the catalytic action was studied and discussed. What could be confirmed is that catalyst could promote reaction, accelerate the reaction speed, and improve the product's selectivity. 相似文献
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劣质柴油必须进行精制才能满足规格指标和环保要求 ,加氢精制是精制劣质柴油生产优质柴油馏分的理想工艺技术 ,但投资大和操作费用高 ,非加氢技术精制劣质柴油是提高柴油产品质量满足环保要求比较经济、可行的途径。介绍了化学精制、溶剂精制、吸附精制、氧化 /萃取脱硫、生物脱硫等柴油的非加氢精制技术的最新进展情况 ,认为吸附精制是提高我国柴油质量的有效途径 相似文献
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重油催化轻柴油络合精制与低压加氢精制组合工艺的研究 总被引:1,自引:0,他引:1
论述了大庆重油催化轻柴油通过柴油络合精制与低压加氢精制组合工艺解决柴油质量问题的方法,讨论了有关结果,认为络合精制与低压加氢精制组合技术处理大庆重油催化轻油方案可行,是解决二次加工柴油质量的有效途径之一。 相似文献
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针对催化裂化柴油颜色变深及安定性变差的原因,以中国石油庆阳石化公司催化裂化柴油为基础油,试验了柴油保色剂对柴油色度、沉渣方面的影响,并进行了工业应用,取得了较好的效果。加注新型保色剂延长了柴油在储罐中的存贮时间,提高了氧化安定性,降低了损耗。 相似文献