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1. 发明授权

US5328670A Method of treating nickel-containing etching waste fluid 失效
标题翻译：处理含镍蚀刻废液的方法
公开(公告)号：US5328670A
公开(公告)日：1994-07-12
申请号：US854565
申请日：1992-03-20
申请人： Teruhiko Hirabayashi , Yoshiyuki Imagire , Toshiaki Kurihara , Eiichi Akiyoshi , Ryoichi Maekawa
发明人： Teruhiko Hirabayashi , Yoshiyuki Imagire , Toshiaki Kurihara , Eiichi Akiyoshi , Ryoichi Maekawa
IPC分类号： C01G49/00 , C01G53/00 , C23F1/28 , C23F1/46 , C01G49/10 , C01G53/09
CPC分类号： C23F1/46 , Y10S423/01
摘要： A method of regenerating an etching waste fluid, includes the steps of dissolving HCl gas in an etching waste fluid at a temperature falling within a range of 20.degree. C. to 50.degree. C. and crystallizing NiCl.sub.2 and FeCl.sub.2 crystals, the etching waste fluid containing NiCl.sub.2, FeCl.sub.3, and FeCl.sub.2 and being obtained by etching Ni or an Ni alloy with an etching solution consisting of an aqueous solution containing FeCl.sub.3, distilling a mother liquor at the atmospheric pressure after crystallization and separation thereof to reduce the HCl concentration in the mother liquor, and distilling, at a reduced pressure, a concentrate obtained upon distillation at the atmospheric pressure to further reduce the HCl concentration, thereby obtaining an aqueous solution containing FeCl.sub.3, or bringing the concentrate obtained by distillation at the atmospheric pressure into contact with an iron oxide to cause HCl in the concentrate to react with the iron oxide to further reduce the HCl concentration in the concentrate thereby obtaining the aqueous solution containing FeCl.sub.3 with little HCl.
摘要翻译：一种再生蚀刻废液的方法包括以下步骤：将HCl气体溶解在蚀刻废液中，温度范围为20℃至50℃，并结晶NiCl 2和FeCl 2晶体，蚀刻废液含有 NiCl 2，FeCl 3和FeCl 2，并且通过用含有FeCl 3的水溶液的蚀刻溶液蚀刻Ni或Ni合金，在结晶并分离后蒸馏出大气压下的母液，从而降低母液中的HCl浓度并且在减压下蒸馏在大气压下获得的浓缩物以进一步降低HCl浓度，从而获得含有FeCl 3的水溶液，或将通过蒸馏在大气压下获得的浓缩物与氧化铁接触使浓缩物中的HCl与氧化铁反应，以进一步降低浓缩物中的HCl浓度从而获得含少量HCl的FeCl 3水溶液。

2. 发明授权

US4629606A Recovery of tungsten compounds 失效
标题翻译：回收钨化合物
公开(公告)号：US4629606A
公开(公告)日：1986-12-16
申请号：US755402
申请日：1985-07-16
申请人： Yoshiyuki Imagire , Teruhiko Hirabayashi , Nobuo Nonaka , Toshifumi Kitagawa , Yasukazu Murakami , Iwao Abe , Shinzo Uda , Osamu Ohshima , Etsuo Takemoto
发明人： Yoshiyuki Imagire , Teruhiko Hirabayashi , Nobuo Nonaka , Toshifumi Kitagawa , Yasukazu Murakami , Iwao Abe , Shinzo Uda , Osamu Ohshima , Etsuo Takemoto
IPC分类号： B01J23/92 , C01G41/00 , C22B7/00 , C22B34/36
CPC分类号： C01G41/00 , B01J23/92 , C22B34/36 , C22B7/001 , Y02P10/214 , Y02P20/584
摘要： The present invention provides a process for recovering a tungsten compound from a waste liquor containing a high-boiling organic compound and the tungsten compound, which process comprises the steps of spray-burning said waste liquor at an air ratio of 1.05 or higher under conditions of a temperature and a residence time which lie within the region of a pentagon defined by points A, B, C, D, and E in FIG. 1; quenching the combustion product by immediately bringing it into direct contact with water; and recovering the tungsten compound.
摘要翻译：本发明提供了从含有高沸点有机化合物和钨化合物的废液中回收钨化合物的方法，该方法包括以1.05以上的空气比喷雾燃烧所述废液的步骤，位于由图1中的点A，B，C，D和E限定的五边形区域内的温度和停留时间。 1; 立即使其与水直接接触来淬火燃烧产物; 并回收钨化合物。

3. 发明授权

US4208390A Process for the recovery of ammonia and sulphur dioxide from a contaminated ammonium salt of sulphuric acid 失效
标题翻译：从污染的硫酸铵盐中回收氨和二氧化硫的方法
公开(公告)号：US4208390A
公开(公告)日：1980-06-17
申请号：US899396
申请日：1978-04-24
申请人： Teruhiko Hirabayashi , Willem J. Wassen
发明人： Teruhiko Hirabayashi , Willem J. Wassen
IPC分类号： C01B17/50 , C01B17/58 , C01C1/02 , C01C1/12 , C01C1/24
CPC分类号： C01C1/028 , C01B17/58
摘要： An improved process for the recovery of ammonia and sulphur dioxide from a by-product mixture containing an ammonium salt of sulphuric acid obtained as a by-product in the preparation of .epsilon.-caprolactam or cyclohexanone oxime. The by-product mixture is reacted, in finely divided form and at a temperature of from 700.degree. to 950.degree. C., with gases obtained from the combustion of a fuel in a controlled amount of oxygen, and ammonia and sulphur dioxide are thereafter separated from the resulting reaction mixture. The amount of oxygen is controlled to be less than the theoretical additional amount that would be required to convert the nitrogen, sulphur, hydrogen and carbon contained in the by-product mixture and fuel into, respectively, N.sub.2, SO.sub.2, H.sub.2 O and CO.sub.2.
摘要翻译：一种改进的方法，用于从制备ε-己内酰胺或环己酮肟的副产物中获得的含有硫酸铵盐的副产物混合物中回收氨和二氧化硫。副产物混合物以细分的形式和在700℃至950℃的温度下反应，然后从燃烧控制的氧气燃烧得到的气体和氨和二氧化硫分离从得到的反应混合物中。将氧气的量控制在小于将副产物混合物和燃料中所含的氮，硫，氢和碳分别转化成N 2，SO 2，H 2 O和CO 2所需的理论添加量。

4. 发明授权

US3941875A Process for treating gas containing hydrogen sulfide 失效
标题翻译：处理含硫化氢气体的方法
公开(公告)号：US3941875A
公开(公告)日：1976-03-02
申请号：US354868
申请日：1973-04-26
申请人： Hidemasa Tsuruta , Yukinori Hiwatashi , Teruhiko Hirabayashi , Seiji Kumata
发明人： Hidemasa Tsuruta , Yukinori Hiwatashi , Teruhiko Hirabayashi , Seiji Kumata
IPC分类号： B01D53/52 , B01D53/77 , C01B17/05 , C01B17/16 , C10K1/10 , C01B17/06 , B01D53/34
CPC分类号： C10K1/10 , C01B17/167
摘要： A process for treating a hydrogen sulfide-containing gas in a closed loop system wherein said gas is passed through and absorbed by an alkaline aqueous absorbent containing an alkali carbonate and an oxidation catalyst. The solution containing the dissolved hydrogen sulfide is oxidized with an oxygen-containing gas to convert the absorbed hydrogen sulfide into elementary sulfur and sulfur salt compounds. After separation of the elementary sulfur from the solution, the solution is re-circulated for use as alkaline absorbent. A part of the re-circulated solution is diverted and subjected to mixed-combustion with an auxiliary fuel in a combustion furnace at an air ratio lower than 0.9 and at a temperature of 700.degree.C to 1100.degree.C to thermally decompose the sulfur compounds into hydrogen sulfide and an alkali carbonate. The gaseous products of decomposition are brought into direct contact with boiling water to collect the alkali carbonate in the form of an aqueous solution and leaving hydrogen sulfide in the gas.
摘要翻译：一种在闭环系统中处理含硫化氢的气体的方法，其中所述气体通过并被含有碱金属碳酸盐和氧化催化剂的碱性含水吸收剂吸收。含有溶解的硫化氢的溶液用含氧气体氧化，将吸收的硫化氢转化为单硫和硫盐化合物。在从溶液中分离出元素硫后，溶液再循环用作碱性吸收剂。一部分再循环的溶液被转向并在燃烧炉中以空气比低于0.9，在700℃至1100℃的温度下与辅助燃料混合燃烧，以将硫化合物热分解成硫化氢和碱金属碳酸盐。将分解的气态产物与沸水直接接触，收集水溶液形式的碱金属碳酸盐，并在气体中留下硫化氢。

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