Novbel Desulfurization, Denitrogenation, and Demetalation Process for Fuel Oils Effected by Photochemical Reactions

燃料油中的含硫、含氮和含金属化合物是造成空气污染和内燃机腐蚀的原因。目前，这些物质通过催化加氢精制工艺除去。本工作开发了基于目标物种光化学转化的新型脱硫、脱氮和脱金属工艺.光化学脱硫脱氮。基于油/水和油/乙腈体系的光辐射的重质-中间馏分（轻油和减压瓦斯油）的新型脱硫和脱氮方法，其中硫和氮化合物被光氧化并成功地从油中除去。目前加氢精制工艺难以脱硫的烷基取代DBT，通过现有工艺可以容易地脱硫，并成功地实现深度脱硫.光化学脱金属。基于货车的光分解作用，开发了渣油光化学脱金属工艺 ...更多信息 在2-丙醇存在下，通过UV照射和随后通过HCl水溶液萃取所得金属，对芳基卟啉和镍卟啉进行了表征。采用该工艺可以成功地脱除常减压渣油中几乎所有的钒和镍.基于锍盐形成的脱硫脱氮。开发了一种基于硫化物烷基化和随后生成的锍盐沉淀的油品脱硫新工艺。轻质油的硫含量被成功地降低到小于0.005wt%（超深度脱硫水平），同时氮化合物也被顺利脱除.基于亚硫酰亚胺形成的脱硫。开发了一种基于硫化合物酰亚胺化和随后的硫酰亚胺吸附的轻质油脱硫新工艺.化学氧化法脱硫脱氮。开发了一种新的轻质油品脱硫脱氮工艺，该工艺采用过氧化氢和乙酸对硫、氮化合物进行化学氧化，然后用乙腈水溶液萃取。少

Sulfur-, nitrogen-, and metal-containing compounds, present in fuel oils, are causes of air pollution and corrosion of combustion engine. These are removed presently by catalytic hydrorefining process. The present work developed novel desulfurization, denitrogenation, and demetalation processes, based on photochemicalconversion of the objective species.1. Photochemical Desulfurization and Denitrogenation. Novel desulfurization and denitrogenation processes for heavy-middle distillate (light oils and vacuum gas oil), based on photoirradiation of oil/water and oil/acetonitrile systems, where sulfur and nitrogen compounds are photooxidized and removed successfully from oil. Alkyl-substituted DBTs, which is difficult to desulfurize by current hydrorefining process, is desulfurized easily by the present processes, and deep desulfurization is achieve successfully.2. Photochemical Demetalation. Photochemical demetalation process for residue oils is developed based on photodecomposition of van … More adyl- and nickelporphyrins by UV irradiation in the presence of 2-propanol and subsequent extraction of the resulting metals by aqueous HC1 solution. By employing the process, almost all of the vanadium and nickel in atmospheric and vacuum residue oils can be removed successfully.3. Desulfurization and Denitrogenation Based on Sulfonium Salts Formation. Novel desulfurization process for oils, based on alkylation of sulfur compounds and the subsequent precipitation of the resulting sulfonium salts, is developed. The sulfur content of light oil is decreased successfully to less than 0.005 wt % (ultra deep desulfurization level), where nitrogen compounds are also removed simultaneously.4. Desulfurization Based on Sulfimides Formation. Novel desulfurization process for light oil, based on imidation of sulfur compounds and the subsequent adsorption of the resulting sulfimides, is developed.5. Desulfurization and Denitrogenation Based on Chemical Oxidation. Novel desulfurization and denitrogenation process for light oil, based on chemical oxidation of sulfur and nitrogen compounds using hydrogen peroxide and acetic acid and the subsequent extraction of the resulting materials by aqueous acetonitrile solution, is developed. Less