An Investigation for Utilisation of Ionic liquids in the Removal of Transition Metals from Refinery Feedstocks

利用离子液体去除炼油厂原料中过渡金属的研究

• 批准号: 2292558
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2292558
• 关键词: Investigation; Utilisation; Ionic; liquids; Removal

Fossil fuels predominantly contain impurities that possess different molecular structures. Metal impurities of crude oils which frequently occur as metalloporphyrin complexes are of the principal target of refineries, and if not treated, these undesired constituents cost refineries considerably due to their adverse effects on the catalyst activity of hydroprocessing units and equipment corrosion problems. On the other hand, the ongoing current and future demand for vanadium in the steel industry, catalysis and flow batteries has led the researchers to be encouraged to conduct extensive researches over vanadium recovery from a variety of refineries hydrocarbon streams and the industrial wastes. Only for vanadium redox batteries, the cumulative demand for vanadium from now to 2030 is projected to be up to 370 kton, meaning there is a huge opportunity for vanadium recovery from alternative sources. Apart from crude oil and diluted bitumen from oil sands which contain a high amount of transition metals and so are the attractive target for demetallation, there are a variety of so-called wastes - such as petroleum coke fly ash, 100 Mt/year- containing relatively large amounts of vanadium and nickel which could be attractive unintentional targets. The advantage and drawbacks of different feedstocks will be explained in this report. The current and future challenges have been investigated, and attempts were made to propose solutions to those challenges.This project is aiming to investigate the utilisation of ionic liquids to eliminate specifically vanadium and nickel via physical contact and bi-phasic separation and to investigate the recovery of both the ionic liquid and the precious metals using conventional techniques. In this report you will also read the source of metals in refineries, investigation of current demetallation techniques, mechanisms by which metals are associated in asphaltene, reported utilisation of ionic liquids for oil demetallation, electrochemical characterisation of metalloporphyrins in ionic liquids and the future market of vanadium.

化石燃料主要含有具有不同分子结构的杂质。经常作为金属卟啉络合物出现的原油的金属杂质是炼油厂的主要目标，并且如果不处理，这些不期望的组分由于其对加氢处理单元的催化剂活性的不利影响和设备腐蚀问题而使炼油厂花费相当大。另一方面，钢铁工业、催化剂和液流电池对钒的当前和未来需求促使研究人员对从各种炼油厂烃流和工业废物中回收钒进行广泛的研究。仅就钒氧化还原电池而言，从现在到2030年，钒的累计需求预计将高达37万吨，这意味着从替代来源回收钒的机会巨大。除了原油和油砂中的稀释沥青含有大量过渡金属，因此是脱金属的有吸引力的目标之外，还有各种所谓的废物，如石油焦粉煤灰，每年1亿吨，含有相对大量的钒和镍，可能是有吸引力的无意目标。本报告将解释不同原料的优缺点。本项目旨在研究利用离子液体通过物理接触和两相分离去除钒和镍，并研究使用常规技术回收离子液体和贵金属。在这份报告中，您还将阅读炼油厂中金属的来源，当前脱金属技术的调查，金属在沥青质中结合的机制，离子液体用于石油脱金属的报道，离子液体中金属卟啉的电化学表征以及钒的未来市场。