Abstract

The results of a study of the extraction of molybdenum compounds introduced into hydroconversion heavy petroleum feedstock as part of a catalyst precursor are presented. A solid phase insoluble in an organic solvent, a Mo-containing concentrate, is isolated from the vacuum hydroconversion residue by filtration. According to X-ray powder diffraction, molybdenum in the concentrate is almost completely contained in the form of MoS₂, which is transferred by hydrometallurgical method to the solution of the initial molybdenum precursor. It has been shown that the most effective solvent for isolating molybdenum concentrate from the hydroconversion residue is toluene. When a mixed aqueous solution of nitric and sulfuric acids acts on an isolated concentrate, depending on the ratio of components and solution flow rate (multiplicity) as well as temperature and processing time, a high degree (~99%) of molybdenum compound extraction into the solution is achieved.

中文翻译：

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从重油原料中的固体含碳加氢转化残渣中提取钼化合物

摘要

提出了对作为加氢转化重质石油原料作为催化剂前体一部分的钼化合物进行萃取的研究结果。通过过滤从真空加氢转化残余物中分离出不溶于有机溶剂的固相（含Mo的浓缩物）。根据X射线粉末衍射，精矿中的钼几乎完全以MoS ₂的形式包含。通过湿法冶金法将其转移到初始钼前体的溶液中。已经表明，从加氢转化残余物中分离钼精矿的最有效溶剂是甲苯。当硝酸和硫酸的混合水溶液作用于分离的精矿上时，取决于组分的比例和溶液的流速（多样性）以及温度和处理时间，钼化合物中的高品位（〜99％）会被萃取到解决方案得以实现。