以环烷基油常三线和减二线馏分油为原料,采用柴油加氢催化剂进行加氢试验,考察反应温度对芳烃脱除效果的影响。结果表明,在反应压力7 MPa、质量空速1.0 h^(-1)、氢油体积比500∶1的条件下,常三线馏分油在反应温度340℃时加氢处理的产品...以环烷基油常三线和减二线馏分油为原料,采用柴油加氢催化剂进行加氢试验,考察反应温度对芳烃脱除效果的影响。结果表明,在反应压力7 MPa、质量空速1.0 h^(-1)、氢油体积比500∶1的条件下,常三线馏分油在反应温度340℃时加氢处理的产品具有开发《橡胶增塑剂芳香基矿物油》(GB T 33322—2016)A1004产品的可行性,减二线馏分油在反应温度350℃时加氢处理的产品具有开发GB T 33322—2016标准A0709产品的可行性。加氢后产品中的大部分强致癌芳烃得到了有效脱除,仅剩五环芳烃苯并(e)芘,其分子结构空间位阻大,难以加氢饱和,是影响8种特定多环芳烃含量的主要组分。采用该中压加氢处理工艺可以直接制备环保橡胶增塑剂,提高精制油收率。展开更多
Three high-acidity crudes, Dar, SZ36-1, and QHD326, were separated through distillation into several fractions, including diesel distillates, and VGOs. Samples were characterized by negative-ion ESI FT-ICR MS. The O2 ...Three high-acidity crudes, Dar, SZ36-1, and QHD326, were separated through distillation into several fractions, including diesel distillates, and VGOs. Samples were characterized by negative-ion ESI FT-ICR MS. The O2 class species （petroleum carboxylic acids）, which have a close relationship with corrosion of equipment caused by high-acidity crudes, were put in the focus of attention and were discussed in this paper. Monocyclic, bicyclic, and tricyclic naphthenic acids are the main types of petroleum carboxylic acids in naphthenic-base crudes （SZ36-1 and QHD326）. But the main types of petroleum carboxylic acids in paraffinic-base crude （Dar） are aliphatic acids and monocyclic naphthenic acids. The O2 class species in SZ36-1 and QHD326 are distributed in a wider range and have bigger DBE value （double-bond equivalence value） and carbon number than Dar. Bicyclic naphthenic acids have the highest proportion among petroleum carboxylie acids in diesel distillates, but monocyclic and tricyclic naphthenic acids also occupy a high proportion. Particularly, aliphatic acids in the diesel distillate of Dar still have high proportion among petroleum carboxylic acids. The distribution of petroleum carboxylic acids in VGO is basically identical. The bicyclic naphthenic acids assume the first place （about 25 m%）, while the monocyclic and tricyclic naphthenic acids take the next place. The comparison of petroleum carboxylic acids in diesel distillates and VGOs has revealed that the molecules of carboxylic acids in VGOs are not only bigger but also more complicated.展开更多
文摘以环烷基油常三线和减二线馏分油为原料,采用柴油加氢催化剂进行加氢试验,考察反应温度对芳烃脱除效果的影响。结果表明,在反应压力7 MPa、质量空速1.0 h^(-1)、氢油体积比500∶1的条件下,常三线馏分油在反应温度340℃时加氢处理的产品具有开发《橡胶增塑剂芳香基矿物油》(GB T 33322—2016)A1004产品的可行性,减二线馏分油在反应温度350℃时加氢处理的产品具有开发GB T 33322—2016标准A0709产品的可行性。加氢后产品中的大部分强致癌芳烃得到了有效脱除,仅剩五环芳烃苯并(e)芘,其分子结构空间位阻大,难以加氢饱和,是影响8种特定多环芳烃含量的主要组分。采用该中压加氢处理工艺可以直接制备环保橡胶增塑剂,提高精制油收率。
文摘Three high-acidity crudes, Dar, SZ36-1, and QHD326, were separated through distillation into several fractions, including diesel distillates, and VGOs. Samples were characterized by negative-ion ESI FT-ICR MS. The O2 class species （petroleum carboxylic acids）, which have a close relationship with corrosion of equipment caused by high-acidity crudes, were put in the focus of attention and were discussed in this paper. Monocyclic, bicyclic, and tricyclic naphthenic acids are the main types of petroleum carboxylic acids in naphthenic-base crudes （SZ36-1 and QHD326）. But the main types of petroleum carboxylic acids in paraffinic-base crude （Dar） are aliphatic acids and monocyclic naphthenic acids. The O2 class species in SZ36-1 and QHD326 are distributed in a wider range and have bigger DBE value （double-bond equivalence value） and carbon number than Dar. Bicyclic naphthenic acids have the highest proportion among petroleum carboxylie acids in diesel distillates, but monocyclic and tricyclic naphthenic acids also occupy a high proportion. Particularly, aliphatic acids in the diesel distillate of Dar still have high proportion among petroleum carboxylic acids. The distribution of petroleum carboxylic acids in VGO is basically identical. The bicyclic naphthenic acids assume the first place （about 25 m%）, while the monocyclic and tricyclic naphthenic acids take the next place. The comparison of petroleum carboxylic acids in diesel distillates and VGOs has revealed that the molecules of carboxylic acids in VGOs are not only bigger but also more complicated.
