In-situ prepared nanoparticles and their role in heavy oil upgrading

原位制备的纳米粒子及其在重油改质中的作用

• 批准号: 288224-2013
• 负责人: Husein, Maen
• 金额: $ 1.82万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=571372
• 关键词: situ; prepared; nanoparticles; their; role

There is a growing need for effective heavy oil upgrading processes as the demand for high value petroleum products is mounting and the sources of crude oil are becoming more and more unconventional. Upgrading processes involve converting heavy fractions into light fractions, distillates, with higher hydrogen to carbon ratio and removing heteroatoms, which ultimately improve the combustion characteristics and reduce the environmental impact of fuel utilization. Major upgrading processes fall under hydrocracking and/or thermalcracking, which may involve catalysts. Catalytic upgrading is the most promising technology for the conversion of heavy oils into lighter products. The catalyst reduces the severity of the upgrading reactions and enhances the selectivity by reducing the activation energy barrier of given reactions. Heavy oil is cracked and hydrogenated by both catalytic and thermal reactions to produce more valuable distillates. Typical catalysts used in residue upgrading are oxides of molybdenum, cobalt, nickel and/or tungsten supported on a matrix of alumina and/or silica. Ultradispersed catalysis has many advantages over the conventional fixed and fluidized bed catalysis. In addition to offering an ideal platform for coupling in-situ recovery and upgrading, ultradispersed catalysis reduces mass transfer limitations between the active surface and the reacting species while providing an extensive active area were reactions can take place, especially when the dispersed particles are in the nano domain. Recent efforts in my research group have focused on studying the in-situ preparation of a wide variety of dispersed metal/metal oxide nanoparticles in heavy oil. The proposed work aims at investigating the role of the in-situ prepared ultradispersed metal/metal oxide nanoparticles in heavy oil upgrading; including hydrocracking and thermalcracking.

随着对高价值石油产品的需求越来越多，原油的来源越来越越来越非常规，对有效的重油升级过程的需求日益增加。升级过程涉及将重分数转化为轻度分数，馏出物，具有较高的氢与碳比和去除杂原子，最终改善了燃烧特性并减少了燃料利用的环境影响。主要升级过程属于加氢裂缝和/或热分裂，这可能涉及催化剂。催化升级是将重油转化为较轻产品的最有前途的技术。催化剂降低了升级反应的严重程度，并通过降低给定反应的激活能屏障来提高选择性。催化反应和热反应都会破裂并氢化，以产生更有价值的馏出物。残留升级中使用的典型催化剂是在氧化铝和/或二氧化硅基质上支撑的钼，钴，镍和/或钨的氧化物。 超级分散催化具有许多优势，比常规的固定床催化和流化的床催化具有许多优势。除了提供理想的平台用于耦合原位恢复和升级，超级分散催化还可以减少活性表面和反应物种之间的传质限制，同时提供广泛的活性区域是反应，尤其是当分散颗粒在纳米域中。 我的研究小组的最新努力专注于研究重油中各种分散的金属/金属氧化物纳米颗粒的原位制备。拟议的工作旨在研究重油升级的原位制备的超级分散金属/金属氧化物纳米颗粒的作用；包括加氢裂缝和热分裂。