• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Hydrotreating heavy oils over a commercial hydrodemetallation catalyst.
【24h】

Hydrotreating heavy oils over a commercial hydrodemetallation catalyst.

机译：在商用加氢脱金属催化剂上对重油进行加氢处理。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A Uinta Basin bitumen was hydrotreated over a sulfided Ni-Mo on alumina commercial hydrodemetallation catalyst. The catalyst was on-stream continuously for more than 1,000 hours. The data were obtained with the reactor operating as a fixed bed reactor in the upflow mode to ensure complete wetting of the catalyst and nearly isothermal operation.; The deactivation of the catalyst was monitored by the decline in the API gravity of the total liquid product with time-on-stream at a standard set of conditions. The primary process variables studied were reactor temperature (620-685 K; 656-775{dollar}spcirc{dollar}F), liquid weight hourly space velocity (0.24-1.38 h{dollar}sp{lcub}-1{rcub}{dollar}) and total reactor pressure (11.3-16.7 MPa; 1634-2423 psia). The hydrogen/oil ratio was fixed in all experiments at 890 m{dollar}sp3{dollar}/m{dollar}sp3{dollar} (5000 scf H{dollar}sb2{dollar}/bbl).; The extent of heteroatom and metals removal, residuum ({dollar}>{dollar}1000{dollar}spcirc{dollar}F) conversion and molecular weight reduction were determined as a function of process operating variables. Simulated distillation of the hydrotreated total liquid products was used to compute residuum conversion and product distributions. Conradson carbon residue conversion and pour point reduction were also determined as functions of process operating conditions.; Hydrodenitrogenation, hydrodesulfurization, hydrodemetallation and residuum conversion data were analyzed using a modified power rate law model. The apparent kinetic parameters were obtained by combined nonlinear regression and ordinary differential equation solver techniques for the analysis of laboratory data. Simple first-order power rate law expressions for hydrodenitrogenation and hydrodesulfurization were obtained for bitumen hydrotreating over the hydrodemetallation catalyst. Higher than first-order kinetic data for residuum conversion and nickel removal were organized by invoking two parallel first-order reactions for the facile and refractory fractions. A molecular weight reduction model was proposed to examine the extent of residuum conversion to gas-oil, middle distillate and gases. The first-order rate constants were also determined.; The hydrodemetallation catalyst was less active for nitrogen, sulfur and residuum conversion than the hydrodenitrogenation catalyst. Nitrogen, sulfur, and metals removal; residuum conversion; and product distributions are discussed for bitumen hydrotreating over the hydrodemetallation and hydrodenitrogenation catalysts.
机译：在氧化铝市售加氢脱金属催化剂上，通过硫化Ni-Mo对Uinta盆地的沥青进行加氢处理。催化剂连续运行超过1000小时。在反应器作为固定床反应器以上流模式操作以确保催化剂完全润湿和几乎等温操作的情况下获得数据。通过在标准条件下随着运行时间的变化，总液体产物的API比重的下降来监测催化剂的失活。研究的主要过程变量是反应堆温度（620-685 K； 656-775 {sp} {dol} F），液体重量小时空速（0.24-1.38 h {dol} sp {lcub} -1 {rcub} { }和总反应器压力（11.3-16.7 MPa; 1634-2423 psia）。在所有实验中，氢/油比固定为890 m {dol} sp3 {dol} / m {dol} sp3 {dol}（5000 scf H {dol} sb2 {dollar} / bbl）。确定了杂原子和金属去除的程度，残渣（$ 1000）的分子量和分子量的降低，这是工艺操作变量的函数。加氢处理的总液体产物的模拟蒸馏用于计算渣油转化率和产物分布。还确定了Conradson的碳渣转化率和倾点降低与工艺操作条件的关系。使用改进的电费率定律模型分析了加氢脱氮，加氢脱硫，加氢脱金属和残留转化数据。通过组合非线性回归和常微分方程求解器技术获得表观动力学参数，用于分析实验室数据。对于加氢脱金属催化剂上的沥青加氢处理，获得了加氢脱氮和加氢脱硫的简单的一级电价定律表达式。通过调用两个平行的一阶反应，对易碎级和难处理级分，获得了高于一阶动力学数据的残留物转化和镍去除率。提出了一种降低分子量的模型，以研究渣油转化为瓦斯油，中间馏分和气体的程度。还确定了一阶速率常数。加氢脱金属催化剂对氮，硫和残渣转化的活性低于加氢脱氮催化剂。氮，硫和金属去除；残留转化；讨论了在加氢脱金属和加氢脱氮催化剂上沥青加氢处理的产物和产物分布。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号