共查询到20条相似文献,搜索用时 15 毫秒
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胜利常渣中除含有金属Ni、V外 ,还含有大量的金属Na ,常规金属钝化剂可抑制金属Ni、V对催化裂化催化剂的污染 ,但不能抑制金属Na对催化裂化催化剂的毒害 ,DNFVN 1是一种水溶性的钝化剂 ,能钝化金属Ni、V和Na ,胜利石油化工总厂 60 0kt/a重油催化裂化装置工业应用表明 :与常规钝化剂相比DNFVN 1钝化剂可分别降低干气和焦炭产率 2 .3 9%和 9.7% ,干气中的H2 产率明显下降 ,汽油、液化气和轻油收率分别提高 2、0 .71、1.2 4个百分点 ,提高经济收益 2 0 73万元 /a。 相似文献
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YM高效金属减活剂(铜腐蚀抑制剂)的研制与性能评定 总被引:4,自引:0,他引:4
高硫极压剂抗胶合性能优越,但铜腐蚀严重,影响高硫极压剂的发展,在T551和T561的基础上,研制出新的高效金属减活剂(铜腐蚀抑制剂)解决了高硫极压剂的不足,使铜腐蚀达到1级。 相似文献
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过渡金属碳化物作为一种催化新材料得到了人们广泛的关注,在催化加氢、脱氢、脱硫(HDS)、脱氮(HDN)和重整等方面,表现出优良的催化活性和选择性.综述了碳化钒、碳化钼、碳化钨、碳化铁、碳化钛等碳化物的催化性能和碳化物在各个反应中的催化机理的研究进展. 相似文献
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项晓敏 《石油化工腐蚀与防护》2002,19(3):39-41
以铜片腐蚀严重的煤油、溶剂油为研究对象 ,通过碱洗及对腐蚀产物的定性分析 ,确定了油样腐蚀原因系由元素硫引起 ,并提出用金属减活剂T5 5 1抑制油品硫腐蚀 ,该方法对油品其它理化性质无不良影响。应用于工业生产 ,取得了较好的效果 相似文献
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介绍了SD-NFNV1水溶性多功能金属钝化剂在FCC装置上的工业应用情况。结果表明,该钝化剂能有效减轻催化剂中毒,提高平衡催化剂活性,干气中氢气含量由29%减少为18.7%,H2/CH4比由1.3下降为0.6,轻油收藏提高0.93个百分点。 相似文献
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探讨了基础油对汽轮机油氧化安定性的影响,芳烃对氧化安定性有不良的影响,加氢异构的基础油有良好的抗氧化性能。抗氧剂和金属减活剂可以提高汽轮机油的氧化安定性。 相似文献
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针对研制HF-0规格高压抗磨液压油过程中出现的油品热稳定性和水解安定性差的问题,考察了不同类型分散剂和金属钝化剂改善油品热稳定性和水解安定性的效果。结果表明高碱性分散剂和金属钝化剂能解决上述问题。 相似文献
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影响汽轮机油抗乳化性能原因分析 总被引:1,自引:0,他引:1
通过对L~TSA油品的调合过程进行分析,分别从基础油、添加剂和调合工艺过程三方面探寻制约汽轮机油抗乳化性能提高的原因,研究发现基础油的白土吸附深度、水分含量对基础油本身的破乳化性能影响显著,从而导致用其调制的汽轮机油抗乳化性出现相应变化;而添加剂中金属减活剂和防锈剂的加剂量对成品油的抗乳化性能有一定的影响。同时发现调合工艺过程中若系统受内燃机油污染、加剂不合理导致局部添加剂浓度过高也会导致调制汽轮机油的破乳化性能变差。 相似文献
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铁对催化裂化催化剂的危害及其对策 总被引:2,自引:0,他引:2
介绍了催化裂化原料油中铁的来源及存在形态 ,分析了催化裂化催化剂铁中毒的机理及产生的影响 ,对工业上应用的各种防治铁污染的方法分别作了阐述 ,如优化常减压蒸馏装置“一脱四注”工艺、磁分离技术、钝化剂、装置关键部位更换为不锈钢材质、吸附脱铁、减少进料中钠和钙及采用铝溶胶催化剂等 相似文献
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《Petroleum Science and Technology》2013,31(9):1097-1113
Abstract To gain a more complete understanding of the relevance of laboratory testing to predict fuel stability in advanced jet engine designs, the Navy single tube reactor (STR) was employed to examine the impact of copper contamination on fuel oxidation at fuel temperatures closer to operational limits. Oxygen consumption during autoxidation, in the presence of dissolved copper, was similar in both the STR and the standard jet fuel oxidation test at higher temperatures, although differences in flow rates and residence times were evident. By contrast, copper was innocuous in promoting the formation of thermal deposits at lower temperatures in the STR, up to approximately 170°C, after which rapid deposition occurred. This deposition was accompanied by depletion of copper in the fuel, except in the presence of selected additives. In addition to suppressing oxidation, limiting available oxygen also suppressed copper depletion. The findings of this study indicate that as bulk fuel design temperatures continue to increase, copper contamination may begin to be a greater factor in contributing to the accumulation of deleterious thermal deposits within advanced jet engine fuel systems. However, the results also indicate that additives containing metal deactivators could play a useful role in mediating the impact of copper contamination on thermal deposition within fuel system components. 相似文献
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Robert E. Morris Thomas Evans Janet M. Hughes John E. Colbert 《Petroleum Science and Technology》2006,24(9):1097-1113
To gain a more complete understanding of the relevance of laboratory testing to predict fuel stability in advanced jet engine designs, the Navy single tube reactor (STR) was employed to examine the impact of copper contamination on fuel oxidation at fuel temperatures closer to operational limits. Oxygen consumption during autoxidation, in the presence of dissolved copper, was similar in both the STR and the standard jet fuel oxidation test at higher temperatures, although differences in flow rates and residence times were evident. By contrast, copper was innocuous in promoting the formation of thermal deposits at lower temperatures in the STR, up to approximately 170°C, after which rapid deposition occurred. This deposition was accompanied by depletion of copper in the fuel, except in the presence of selected additives. In addition to suppressing oxidation, limiting available oxygen also suppressed copper depletion. The findings of this study indicate that as bulk fuel design temperatures continue to increase, copper contamination may begin to be a greater factor in contributing to the accumulation of deleterious thermal deposits within advanced jet engine fuel systems. However, the results also indicate that additives containing metal deactivators could play a useful role in mediating the impact of copper contamination on thermal deposition within fuel system components. 相似文献
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依据弹性薄壳理论中应变位移关系以及材料的应力松弛理论,导出了机械密封用焊接金属波纹管在实际工况下的失弹方程,得到了波纹管的失弹曲线。根据试验得到的材料应力松弛曲线,确定了材料在工况温度下的应力松弛参数值。在ANSYS Workbench中对波纹管失弹进行有限元分析,将有限元分析结果与理论计算结果对比。研究结果表明,理论计算公式能较好地描述波纹管长期在高温下工作的失弹现象,有限元分析验证了采用弹性薄壳理论建立失弹方程的正确性,可为波纹管的可靠性研究提供依据。 相似文献
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