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1. 发明授权

US4196089A Preparation of overbased magnesium sulfurized phenates 失效
标题翻译：高碱性镁硫化酚盐的制备
公开(公告)号：US4196089A
公开(公告)日：1980-04-01
申请号：US917215
申请日：1978-06-20
申请人： Charles L. Pitzer , Norman Jacobson
发明人： Charles L. Pitzer , Norman Jacobson
IPC分类号： C07C319/10 , C07C67/00 , C07C313/00 , C07C321/26 , C10M159/22 , C10N10/04 , C10N30/04 , C10N40/25 , C10M1/40 , C07C37/00
CPC分类号： C10M159/22 , C10M2219/02
摘要： Preparation of overbased magnesium sulfurized phenates having total base members in the range of about 200 to about 275 by a two-stage procedure, the first stage of which involves dissolving a sulfurized oil-soluble aliphatic hydrocarbyl-substituted phenol, particularly a C.sub.6 -C.sub.30 alkyl phenol, in certain types of high boiling organic polar solvents, exemplified particularly by methyl "Cellosolve," and admixing therewith magnesium oxide in an amount such that, upon refluxing the mixture, a fully neutralized sulfurized alkyl phenol results; and wherein, in the second stage of said procedure, the composition produced in the first stage of the procedure is overbased by admixing therewith a magnesium alkoxide carbonate complex in an amount such as to produce the final overbased magnesium sulfurized phenate compositions having the aforesaid total base number.
摘要翻译：通过两步法制备具有约200至约275范围内的总碱成分的高碱性硫化酚盐，其第一阶段包括将硫化油溶性脂族烃基取代的苯酚，特别是C 6 -C 30烷基苯酚，在某些类型的高沸点有机极性溶剂中，特别是由“溶纤剂”表示，并与其混合氧化镁，其量使得在回流混合物时产生完全中和的硫化烷基酚; 并且其中在所述方法的第二阶段中，在该方法的第一阶段中制备的组合物通过与其混合使用的醇式烷氧基化碳酸酯络合物进行高碱性化，其量可以产生具有上述总碱的最终高碱性硫化镁的酚盐组合物数。

2. 发明授权

US5211853A Method for the removal of chromium compounds from aqueous solutions 失效
标题翻译：从水溶液中去除铬化合物的方法
公开(公告)号：US5211853A
公开(公告)日：1993-05-18
申请号：US923378
申请日：1992-07-31
申请人： John R. Jackson , Charles L. Pitzer
发明人： John R. Jackson , Charles L. Pitzer
IPC分类号： C02F1/70 , C02F9/00
CPC分类号： C02F1/70 , C02F2101/22 , Y10S204/13 , Y10S210/913
摘要： A process for precipitating and removing chromium compounds in which chromium is in the hexavalent state from aqueous liquids, particularly, alkaline earth metal or alkali metal chlorate-rich solutions containing chloride, chlorate, and bichromate ions produced by the electrolysis of brine. In the process, hydroxylamine, hydroxylamine sulfate, hydroxylamine formate or hydroxylamine hydrochloride is used as a reducing agent to react and co-precipitate at a neutral or acid pH with hexavalent chromium ions present in the aqueous liquid, the reaction and precipitation taking place, generally, at a pH of about 4.0 to about 6.5 and, a temperature of about 50.degree. C. to about 100.degree. C. Precipitated oxides and hydroxides of divalent and trivalent chromium can be removed, for instance, by filtration. Reaction time to achieve a level of about 10 parts per million or less of chromium ions in the filtrate varies from less than about 5 hours to less than about 1 hour depending upon selection of reaction temperature and reaction pH. For instance, to achieve a level of 2 parts per million or less chromium ion after removal of the precipitate formed during the reaction at a pH of 5.0-5.5, a reaction time of 10 minutes at a temperature of 90.degree.-95.degree. C. is required. A reaction time of 30 minutes at a temperature of 70.degree. C. or 120 minutes at a temperature of 60.degree. C. provides a similar level of chromate ion removal.
摘要翻译：从含水液体，特别是含有通过电解盐水产生的氯化物，氯酸盐和重铬酸盐离子的碱土金属或富含碱金属的富含氯酸盐的溶液中析出并除去铬为六价态的铬化合物的方法。在此过程中，使用羟胺，硫酸羟胺，羟胺盐酸盐或盐酸羟胺作为还原剂，在中性或酸性pH下与六水六价铬离子反应并共沉淀在水性液体中，发生反应和沉淀，一般 pH为约4.0至约6.5，温度为约50℃至约100℃。可以例如通过过滤除去二价和三价铬的沉淀氧化物和氢氧化物。取决于反应温度和反应pH的选择，实现滤液中约10ppm或更少的铬离子水平的反应时间小于约5小时至小于约1小时。例如，为了在去除反应中形成的沉淀物的pH为5.0-5.5之间达到每百万分之一或更少的铬离子的水平，在90-95℃的温度下反应10分钟。是必须的。在70℃或120分钟的温度下在60℃下反应30分钟，提供类似的铬酸根离子去除水平。

3. 发明授权

US06471871B1 Method for the removal of silicon and heavy metals from aqueous streams 失效
标题翻译：从水流中去除硅和重金属的方法
公开(公告)号：US06471871B1
公开(公告)日：2002-10-29
申请号：US09697220
申请日：2000-10-26
申请人： Charles L. Pitzer
发明人： Charles L. Pitzer
IPC分类号： C25B126
CPC分类号： C25B15/08 , C02F1/5236 , C02F2101/10 , C02F2101/20 , C02F2209/02 , C02F2209/06 , C25B1/265 , Y10S210/912 , Y10S210/913
摘要： A batch or continuous process for the removal by flocculation of silicon and heavy metal contamination from aqueous waste streams by the addition of an aluminum salt, particularly, aqueous streams recycled as electrolyte in the electrolytic production of alkali metal or alkaline earth metal chlorates. The process is particularly suited to the removal of heavy metals and silicon contamination in an electrolyte recycled to an electrolytic cell subsequent to the removal by crystallization of a chlorate salt. An aluminum salt, such as aluminum chloride, aluminum chlorohydrate, and polyaluminum chlorides including polyaluminum chloride sulfates is effective as a flocculating agent.
摘要翻译：通过添加铝盐，特别是在电解生产碱金属或碱土金属氯酸盐中作为电解液再循环的水流，通过絮凝硅和重金属污染从废水流中除去的批次或连续方法。该方法特别适用于在通过氯酸盐结晶除去后，再循环到电解槽中的电解质中去除重金属和硅污染物。作为絮凝剂，铝盐如氯化铝，氯化铝水合物和包括聚氯化铝硫酸盐在内的聚氯化铝是有效的。

4. 发明授权

US5378447A Method for the preparation of chlorates from waste gas streams obtained from the production of chlorine dioxide 失效
标题翻译：从生产二氧化氯得到的废气流中制备氯酸盐的方法
公开(公告)号：US5378447A
公开(公告)日：1995-01-03
申请号：US148356
申请日：1993-11-08
申请人： John R. Jackson , Charles L. Pitzer , Charles O. Buckingham
发明人： John R. Jackson , Charles L. Pitzer , Charles O. Buckingham
IPC分类号： C01B11/02 , C01B11/06 , C01B11/14
CPC分类号： C01B11/023 , C01B11/06 , C01B11/14
摘要： A process is disclosed for producing a dilute solution of an alkali or alkaline earth metal chlorate from a chlorine and carbon dioxide waste gaseous stream. The process of the invention can be combined in a continuous process for the production of an alkali or alkaline earth metal chlorate for use in a chlorine dioxide generator for the production of chlorine dioxide in which the waste gaseous stream from the chlorine dioxide generator is converted to a dilute solution of an alkali or alkaline earth metal chlorate and passed to an electrochemical cell for the generation of an alkali or alkaline earth metal sodium chlorate, the product of the electrochemical cell being in turn passed to the chlorine dioxide generator.
摘要翻译：公开了从氯和二氧化碳废气流中生产碱金属或碱土金属氯酸盐的稀溶液的方法。本发明的方法可以连续地生产用于二氧化氯发生器的碱金属或碱土金属氯酸盐的生产二氧化氯的连续方法，其中来自二氧化氯发生器的废气流转化为碱金属或碱土金属氯酸盐的稀释溶液，并通过电化学电池产生碱金属或碱土金属氯酸钠，电化学电池的产物依次通过二氧化氯发生器。

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