石油化工2025，Vol.54Issue(4)：466-472,7.DOI:10.3969/j.issn.1000-8144.2025.04.003
废加氢脱硫催化剂中金属钼和钒的回收
Recovery of molybdenum and vanadium from waste hydrodesulfurization catalyst
摘要
Abstract
Vanadium and molybdenum were extracted from waste hydrodesulfurization catalysts by sodium roasting and semi-wet process.The effects of roasting conditions and leaching conditions on the leaching of vanadium and molybdenum from waste catalysts were investigated.Main factors for the extraction of vanadium and molybdenum by fractional precipitation from the mother liquor were analyzed to determine the appropriate recovery process.According to the experimental results,the leaching rate of both vanadium and molybdenum reaches more than 95％when the raw material molar ratio of sodium carbonate and hydrodesulfurization catalysts preprocessed by oxidizing roasting is 2,the roasting temperature is 750 ℃,the roasting time is 4 h,the liquid-solid ratio is 6 mL/g,the leaching temperature is 80 ℃,the leaching time is 40 min.The precipitation rate of vanadium and molybdenum can reach more than 97％when the vanadium concentration is higher than 20 g/L,vanadium precipitation time is 60 min,molybdenum precipitation temperature is 70 ℃,molybdenum precipitation time is 3 h.关键词
废加氢脱硫催化剂/钠法焙烧/钒钼回收/偏钒酸铵/钼酸Key words
waste hydrodesulfurization catalyst/sodium roasting/recovery of vanadium and molybdenum/ammonium metavanadate/molybdic acid分类
化学工程引用本文复制引用
李腾飞,王加欣,张毅..废加氢脱硫催化剂中金属钼和钒的回收[J].石油化工,2025,54(4):466-472,7.基金项目
国家自然科学基金项目(U2002212). （U2002212）
