共查询到19条相似文献,搜索用时 78 毫秒
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废润滑油再生新工艺采用AG破乳吸水剂,脱除乳化溶解态的水分,再经白土吸附处理。使废润滑油再生。用本工艺对大连二家工厂的废润滑油进行了最佳操作条件的研究。经过预沉的废油中加入1%的AG剂和6%的白土,在70℃下搅拌20min,静置24h后再过滤可得到理化指标合格的再生油。无污染,收率高,操作费用低,已转让生产。 相似文献
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研究了Pd/SAPO-11催化剂在润滑油馏分异构脱蜡反应和正十二烷加氢异构反应中的应用,以及SAPO-11分子筛的硅含量和催化剂的制备方法对催化剂的物化性能及异构活性、选择性的影响。认为在以SAPO-11分子筛为载体的催化剂上进行的润滑油馏分异构脱蜡反应和正十二烷加氢异构反应受扩散控制,因此,由富含二次孔的SAPO-11分子筛制备的和由方法Ⅱ制备的含具有清洁表面的SAPO-11分子筛的Pd/SAPO-11催化剂均表现出较高的异构活性和选择性。 相似文献
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Polyaniline nanofiltration membranes were synthesized to examine a potential candidate for application of solvent recovery from lube oil. An integrally skinned polyaniline membrane was cast on a woven polyester fabric and then was chemically crosslinked with glutaraldehyde in order to further increase the membranes resistant in a methyl ethyl ketone and toluene mixture. Subsequently, membrane performance was tested under different operational conditions. The operation pressure was fixed at 35 bar and was held constant for all of the tests. The membrane demonstrated a permeate flux of 10 l/(m2 h) and oil rejection of 69%.
Abbreviations: PANi: Polyaniline; PI: polyimide; MEK: methyl ethyl ketone; GA: glutaraldehyde; NMP: N-methyl-2-pyrrolidone; 4MP: 4-methylpiperidine; SEM: Scanning Electron Microscope; OSN: organic solvent nanofiltration; MWCO: molecular weight cut-off. 相似文献
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《化学工业与工程技术》2017,(5):11-15
加氢异构脱蜡反应过程中燃料气、用电及蒸汽消耗是装置的主要能耗,需要通过改进加氢工艺和提高催化剂的加氢性能,以实现装置的节能降耗。分析了某20万t/a异构脱蜡装置的工艺流程和用能特点,阐述了降低燃料气、用电和蒸汽等能耗的优化改造措施及取得的效果。针对当前低负荷运行的情况,通过装置基准能耗计算分析,认为蒸汽消耗还有节能潜力。采取的节能措施有:减压塔轻质侧线汽提塔改为干式气提、使用新型高效疏水器、部分蒸汽伴热改为水伴热、利用蒸汽凝结水替换除氧水。优化后装置的蒸汽能耗降低,取得了较好的效果。 相似文献
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The reaction of hydrocracker bottom hydroisomerization and hydrocracking was studied in a fixed bed micro reactor over a commercial catalyst. Normal hexadecane was used as model compound to judge the reactivity of the catalyst. Then, hydrocracker bottom was investigated, and the reaction liquid products were collected and distillated into light and heavy fractions for detailed investigation. Hydrocarbon types and carbon number distribution of them were fully analyzed. Results indicate that normal paraffins are easy to be hydroconverted into isoparaffins or small molecules. Isoparaffins and monocycloalkanes have similar hydroisomerization and hydrocracking properties. Fused cycloalkanes are hard to be cracked. Hydroconversion of normal paraffins, isoparaffins and monocycloalkanes dominate the reason of the drop of VI and pour point. 相似文献
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针对新造舰船滑油管路内部杂质情况,提出了化学清洗和串油相结合的方法.解决了新造舰船的滑油管路内部的污垢处理问题。 相似文献