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考察了中东VGO及其9个馏分的各类型硫化物分布规律,对比了加氢前后VGO中硫形态的分布变化。采用四丁基高碘酸铵选择性氧化法、柱分离-X射线荧光光谱法,并利用傅里叶变换离子回旋共振质谱仪(FT-ICR MS)分析了中东VGO不同馏分段的硫醚硫、噻吩硫、二苯并噻吩及更复杂的苯并噻吩类硫化物的分布规律。结果表明:中东VGO中硫醚硫约占总硫的13.6%,其它均为噻吩类硫化物;随着馏分沸点升高,各馏分总硫含量、硫醚硫含量、噻吩硫含量均呈增加趋势,硫醚硫在各馏分总硫中的比例逐渐升高;在噻吩硫中,烷基噻吩类硫含量下降,且主要集中在蜡油低沸点馏分中,烷基苯并噻吩类硫含量逐渐下降,其它更复杂含硫化合物硫含量随着馏分沸点的升高而增加;加氢处理后总硫含量大幅度降低,硫醚硫、苯并噻吩类硫含量的比例降低,其它更复杂含硫化合物硫含量的比例增加;随着加氢深度增加,硫醚硫、烷基噻吩硫含量的比例逐渐降低,其它更复杂含硫化合物硫含量的比例逐渐增加。 相似文献
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含硫原油腐蚀评价研究的进展 总被引:5,自引:0,他引:5
在分析中东含硫原油及哈萨克斯坦原油的活性硫含量和总硫含量的关系,以及此两类原油各馏分中各种类型活性硫分布的基础上,提出在含硫原油腐蚀评价中采用“腐蚀性硫”新概念,并提供了多种原油不同馏分的腐蚀性硫数据。认为用此概念来描述原油含硫与腐蚀的关系,较当今的“活性硫”评价理论科学,能建立更为准确的评价方法。 相似文献
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催化裂化汽油中硫和族组成及硫化物类型的馏分分布 总被引:13,自引:0,他引:13
分别对山东石大科技集团公司胜华教学实验厂和中国石油化工股份有限公司齐鲁分公司胜利炼油厂的催化裂化(FCC)汽油进行了实沸点切割,测定了各窄馏分的硫含量、族组成和硫化物类型分布。结果表明,FCC汽油中的硫含量随馏分沸点的升高而增加,两种FCC汽油具有相似的硫化物含量分布,其中噻吩硫占50%~60%,二硫化物占5%~6%,硫醚占25%~30%,硫醇占10%~13%。硫醚和硫醇主要集中在小于100℃的馏分中,二硫化物主要集中在70~100℃的馏分中,噻吩主要集中在大于100℃的馏分中。FCC汽油的烯烃含量随馏分沸点的升高而减少,烷烃和烯烃主要集中在小于85℃的馏分中,芳烃主要集中在大于145℃的馏分中,环烷烃的分布比较均匀。FCC汽油中的辛烷值分布呈现两头高中间低的趋势。 相似文献
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《中国石化文摘》2005,(2)
TE622.13200502016原油及其馏分油的硫含量关联的研究〔刊〕/单石灵,徐志达…(中国石油化工股份有限公司广州分公司)∥炼油技术与工程.-2004,34(5).-7~10汇集了83种国内外原油共110次的硫含量分析数据,分析比较了原油及其各馏分硫含量,找出了各馏分硫含量与原油硫含量的关联关系。结果表明,轻馏分硫含量与原油硫含量的关联性较差,重馏分硫含量与原油硫含量的关联性较好。蜡油馏分的硫含量约为原油硫含量的1.1倍,常压渣油硫含量约为原油硫含量的1.6倍,减压渣油硫含量约为原油硫含量的2倍。低硫原油的馏分硫含量随馏分变重增加缓慢,而含硫原… 相似文献
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FCC柴油中硫、氮化合物的馏分和类型分布 总被引:6,自引:0,他引:6
分别对石油大学胜华炼油厂和齐鲁石化公司胜利炼油厂的FCC柴油进行了实沸点切割,采用硫、氮分析仪和GC—PFPD、GC—MS测定了各窄馏分的硫、氮含量,同时测定了齐鲁FCC柴油中各窄馏分的硫、氮化合物的类型分布。结果表明,FCC柴油中的硫、氮含量主要集中在240℃以上的馏分中。其氮化物的类型分布为:在小于200℃的馏分中主要是砒啶类和胺类氮化物,占总氮含量的3.2%;在200~300℃的馏分中主要是吲哚及其衍生物,占总氮含量的26.6%;300℃以上的馏分中主要以咔唑及其衍生物为主,占总氮含量的70.2%。其硫化物的类型分布为:在小于200℃的馏分中主要是硫醇和噻吩类硫化物,占总硫含量的3.2%;在200~300℃的馏分中主要是苯并噻吩类硫化物,占总硫含量的49.5%;300℃以上的馏分中主要以二苯并噻吩类硫化物为主,占总硫含量的47.3%。 相似文献
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《石油化工腐蚀与防护》2017,(5)
为了研究高硫原油对常减压蒸馏装置的影响,特别是高温腐蚀的问题,基于某加工俄罗斯原油的常减压蒸馏装置几年来的腐蚀情况和腐蚀现象,对腐蚀原因和解决方案进行了讨论。通过对原油评价报告相关馏分中硫含量的分析、石油馏分活性硫腐蚀机理的分析、设备和操作参数的比较,确定了腐蚀原因。最后确定采用高温防腐蚀的思路,并推荐了一种解决方案。 相似文献
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ABSTRACT The need for detailed information on the types of sulfur compounds present in various petroleum cuts has been well recognized by refiners and environmentalists worldwide. This need is growing in recent years in view of the current environmental regulations that limit the sulfur content of transportation fuels to very low levels. In the present work we have studied the distribution of different kinds of sulfur compounds present in light and middle distillates of Kuwait crude oil. A representative sample of Kuwait crude oil was fractionated into naphtha (15-160°C) and 10-15°C cuts in the gas oil boiling range (210-340°C) using an 80L capacity autodistillation unit “AUTODEST-800” according to ASTM 2892. The distribution of various types of sulfur compounds in each of these cuts was quantitatively estimated by capillary gas chromatography equipped with a sulfur chemiluminescence detector. Thiophene and its alkyl derivatives constituted about 60% of the total sulfur compounds in the naphtha fraction. The remaining 40% was composed of mercaptanes and alkyl sulfides. In the gas oil boiling range (210-340) two groups of sulfur compounds, namely, alkyl benzothiophenes and alkyl dibenzothiophenes were present. A major portion of the alkyl benzothiophenes was found in the fraction boiling in the narrow range 235-257°C. Among the alkyl dibenzothiophenes, the concentration of C, and C2 DBTs decreased while that of higher alkyl DBTs (< C3-DBTs) increased with increasing temperature. The C1 and C2 alkyl DBTs were highly concentrated in a fraction boiling between 280-325°C and these sulfur compounds were absent in the fraction boiling above 330°C. The industrial implications of these results are discussed. 相似文献
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设计了一种现场腐蚀旁路试验方法,该方法不仅可以直接研究实际生产原油中环烷酸对材质的腐蚀性,还可以实现变流速试验。采用该装置研究了原油流速和硫含量对其中环烷酸腐蚀性的影响规律。结果表明,在试验条件下,随原油流速的增加,10#碳钢和Cr5Mo的腐蚀速率均成线性增大,321不锈钢的腐蚀速率基本不变;在各个流速情况下321不锈钢的耐腐蚀性最优,Cr5Mo其次,10#碳钢最差。在硫质量分数不大于0.86%时,硫含量对原油中环烷酸腐蚀性的影响较小;当原油中硫质量分数大于0.86%时,随着硫含量的增加,10#碳钢和Cr5Mo的腐蚀速率显著减小, 321不锈钢的腐蚀速率均很小;在各个硫含量情况下321不锈钢的耐腐蚀性最优,Cr5Mo其次, 10#碳钢最差。 相似文献
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Dheer Singh Anju Chopra P. K. Mahendra Vivekanand Kagdiyal Deepak Saxena 《Petroleum Science and Technology》2016,34(14):1248-1254
A gas chromatograph coupled with sulfur chemiluminscence detector (GC-SCD) has been used for the speciation of individual sulfur compounds in fractions of different crude oils. The crude oil fractions characterized were light naphtha (C5-90°C), heavy naphtha (90–140°C), kerosene (140–240°C), and gas oil (240–370°C) fractions obtained from true boiling point distillation process. Low boiling fractions (up to 140°C) were analyzed by existing ASTM D5623 (American Society for Testing and Materials, 2009a) method for sulfur compound speciation. As there is no standard method for the distribution of sulfur compounds in high boiling samples (up to 370°C), therefore, a methodology has been developed for the diesel range samples. The identification of individual sulfur compounds were carried out by using reference sulfur compounds. The results show that type of sulfur compounds depends upon the boiling range of the fraction and source of crude oil. The major changes in the sulfur compounds profiles of different fractions are discussed. The results of this study can be used to predict the suitability of crude oil for the production of Euro-IV and V gasoline and diesel fuels. 相似文献
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Arab light crude oil has been characterized in terms of API gravity, total sulfur content, Reid vapor pressure, ash content, heating value, salt content, viscosity SUS, vanadium content as V2O5, pour point and analyses of various metals. The crude oil was fractionated into six true boiling point (TBP) fractions (IBP-95°C, 95-205°C, 205-260°C, 260-345°C, 345-455°C and 455°C+). These fractions were characterized in terms of API gravity, total sulfur, H2S, mercaptan contents, molecular weight, elemental analyses for total carbon, hydrogen and nitrogen, and analyses of various metals. The kinematic viscosity data have been obtained for 95°C+ TBP fractions for a wide range of temperature up to 200°C. 相似文献
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分别将两批次出口汽油试样按20%馏出体积等份切割,采用紫外荧光测硫仪测定了各窄馏分中试样的平均硫含量。结果表明,各窄馏分中试样的平均硫含量遵循由小到大分布的规律;80%~终馏点窄馏分中试样的平均硫含量占该馏分总硫含量的31.3%~36.9%;与初馏点~20%窄馏分中的平均硫含量相比,80%~终馏点窄馏分中的平均硫含量分别是前者平均硫含量的2.8倍和2.2倍。建议生产以催化裂化汽油为主要组分的燃料油时,脱硫重点应放在汽油组分中的重馏部分,特别是80%~终馏点窄馏分,因为汽油馏分中约1/3硫含量都集中在该段馏分中。 相似文献
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测定了委内瑞拉、克拉玛依、辽河和大港4种原油及其常压渣油(AR)、减压渣油(VR)中的Fe含量,并分析了原油及其AR、VR的四组分中的Fe含量分布和原油及其AR、VR中Fe的存在形态及分布。结果表明,从原油、AR到 VR,随着油样沸程的升高,其Fe含量不断增加,并且主要富集在VR中;Fe主要分布于胶质、沥青质组分中,并且随着原油馏分沸程的升高,沥青质中的Fe含量分布不断增加;原油及渣油中的Fe主要是油溶性Fe,占总Fe质量分数的75%~99%,且同一种原油中油溶性Fe的含量随着该原油馏分沸程的升高而增加,原油及其AR、VR中石油酸Fe的含量与原油的酸值大小有关,卟啉Fe和非卟啉Fe含量之和随着原油的重质化而增加。 相似文献