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1.发明授权
公开(公告)号：US4678557A
公开(公告)日：1987-07-07
申请号：US773802
申请日：1985-09-09
申请人： Domingo Rodriguez , Roberto Schemel
发明人： Domingo Rodriguez , Roberto Schemel
摘要： A process for the regeneration of a spent catalyst used in the upgrading of heavy hydrocarbon feedstocks comprises roasting a spent natural iron base catalyst contaminated with carbon, sulfur and vanadium at a temperature of not more than 400.degree. C. in the presence of a carbonate selected from the group consisting of sodium, potassium, and mixtures thereof so as to eliminate carbon from the catalyst and obtain a roasted product containing iron oxide and water soluble salts of sulfur and vanadium. The roasted product is thereafter water leached so as to dissolve the soluble salts of sulfur and vanadium. The regenerated catalyst is thereafter separated from the leaching liquor so as to obtain a catalyst substantially free of carbon and sulfur.
摘要翻译： 用于重质烃原料升级中使用的废催化剂再生方法包括在选择的碳酸盐存在下，在不超过400℃的温度下焙烧被碳，硫和钒污染的废天然铁碱催化剂 来自由钠，钾及其混合物组成的组，以从催化剂中除去碳，并获得含有氧化铁和硫和钒的水溶性盐的焙烤产品。 然后将该焙烤产物进行水洗，以溶解硫和钒的可溶性盐。 然后将再生催化剂从浸出液中分离出来，得到基本上不含碳和硫的催化剂。
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2.发明授权Method for leaching and recovering vanadium from vanadium bearing by-product materials 失效从含钒副产品原料中浸取和回收钒的方法
公开(公告)号：US4539186A
公开(公告)日：1985-09-03
申请号：US589951
申请日：1984-03-15
CPC分类号： C22B7/02 , C01G31/02 , C22B23/0415 , C22B34/22 , Y02P10/212
摘要： A method for the removal and recovery of vanadium from a vanadium bearing material by leaching the vanadium bearing material in the presence of a leach promoter and removing the vanadium so leached from the leaching solution by precipitation. The leaching promoter forces the vanadium present in the vanadium bearing material into solution.
摘要翻译： 一种通过在浸出助催化剂存在下浸取含钒材料并除去通过沉淀从浸出溶液中浸出的钒而从含钒材料中除去和回收钒的方法。 浸出促进剂将钒载体材料中存在的钒挥发成溶液。
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3.发明授权
公开(公告)号：US4548792A
公开(公告)日：1985-10-22
申请号：US589949
申请日：1984-03-15
摘要： A method for precipitating vanadium from vanadium bearing liquors comprises adjusting the pH of the vanadium bearing liquor with a precipitating agent selected from the hydroxides of Na, K and Ca to a range of about 5.5 to 6.5, preferably 6.0 to 6.2 so as to precipitate vanadium in the trivalent and tetravalent states. Remaining traces of vanadium are then cemented by additions of calcium hydroxide, calcium oxide or mixtures thereof. The dried precipitate is then heated in the presence of air and Na and/or K so as to form a reaction product in the form of a water soluble salt which, when dissolved in water, results in vanadium in its pentavalent state.
摘要翻译： 从含钒液体中析出钒的方法包括用选自Na，K和Ca的氢氧化物的沉淀剂将含钒液体的pH调节至约5.5至6.5，优选6.0至6.2的范围，以使钒沉淀 在三价和四价状态。 然后通过加入氢氧化钙，氧化钙或其混合物将剩余的钒痕迹胶结。 然后将干燥的沉淀物在空气和Na和/或K存在下加热，以形成水溶性盐形式的反应产物，当溶解在水中时，其导致钒处于其五价态。
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