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1.发明授权Process for purifying a sulfur dioxide containing gas with production of elemental sulfur 失效用生成元素硫来净化含二氧化硫的气体的方法
公开(公告)号：US4174383A
公开(公告)日：1979-11-13
申请号：US717943
申请日：1976-08-26
CPC分类号： C01B17/56 , B01D53/501 , C01B17/05
摘要： Process for purifying SO.sub.2 -containing gas comprising a first step of contacting said gas with an aqueous solution of an ammonium sulfite or an ammonium thiosulfate also containing ammonium sulfate, a second step of contacting the resulting solution with a H.sub.2 S-containing gas at 20.degree.-90.degree. C. to produce sulfur which is separated from the remaining solution, a third step of recyling 90 to 99.99% by volume of said remaining solution to the first step, and a fourth step of introducing 0.01 to 10% by volume of said remaining solution into a molten salt formed of ammonium sulfate and/or bisulfate so as to produce a gas containing SO.sub.2, ammonia, sulfur and steam, which is recycled to the first step.
摘要翻译： 包括用于纯化含SO 2的气体的方法，包括使所述气体与还含有硫酸铵的亚硫酸铵或硫代硫酸铵的水溶液接触的第一步骤，第二步是使所得溶液与含有H 2 S的气体在20℃下接触， 90℃，以产生与剩余溶液分离的硫，第三步骤，将90至99.99体积％的剩余溶液重新循环至第一步骤;第四步骤，将0.01至10体积％的所述剩余溶液 溶液形成由硫酸铵和/或硫酸氢盐形成的熔盐，以产生含有SO 2，氨，硫和蒸汽的气体，其被再循环到第一步。
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2.发明授权
公开(公告)号：US4081515A
公开(公告)日：1978-03-28
申请号：US801981
申请日：1977-05-31
申请人： Henri Gruhier , Andre Deschamps , Philippe Renault
发明人： Henri Gruhier , Andre Deschamps , Philippe Renault
CPC分类号： C01B17/505 , C01B17/504 , C01C1/028 , Y02P20/52
摘要： Molten ammonium sulfate is converted to ammonia and sulfur dioxide by heating in the presence of at least one molybdenum and/or tungsten compound, preferably at a temperature in the range of 350.degree. to 500.degree. C.
摘要翻译： 在至少一种钼和/或钨化合物的存在下，优选在350至500℃的温度范围内，通过加热将熔融的硫酸铵转化成氨和二氧化硫。
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公开(公告)号：US4048293A
公开(公告)日：1977-09-13
申请号：US671711
申请日：1976-03-29
CPC分类号： B01D53/501 , B01D53/8612 , C01B17/05
摘要： This process for purifying a sulfur dioxide containing gas, for example stack gas, comprises the steps of washing the gas with aqueous ammonia or ammonium sulfite, vaporizing sulfur dioxide and ammonia therefrom, reacting vaporized sulfur dioxide with hydrogen sulfide and recycling an ammonia containing stream. To avoid the drawbacks resulting from the presence of hydrogen sulfide in the recycle stream, a further oxidation step is provided to convert hydrogen sulfide to sulfur dioxide.
摘要翻译： 用于纯化含二氧化硫的气体（例如烟气）的方法包括以下步骤：用氨水或亚硫酸铵洗涤气体，从其中蒸发二氧化硫和氨，使蒸发的二氧化硫与硫化氢反应并再循环含氨气流。 为了避免在循环物流中存在硫化氢导致的缺点，提供了另外的氧化步骤以将硫化氢转化为二氧化硫。
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4.发明授权Process for reducing molten ammonium sulfates containing metallic impurities to ammonia and sulfur dioxide 失效将含有金属杂质的熔融硫酸铵还原成氨和二氧化硫的方法
公开(公告)号：US4029745A
公开(公告)日：1977-06-14
申请号：US597532
申请日：1975-07-21
申请人： Claude Dezael , Philippe Renault , Andre Deschamps
发明人： Claude Dezael , Philippe Renault , Andre Deschamps
CPC分类号： C01B17/504
摘要： Molten ammonium sulfates containing iron sulfate as an impurity may be reduced with sulfur or a sulfur compound over long periods provided a fraction of these impure ammonium sulfates is withdrawn, treated for iron removal and fed back to the reduction zone.
摘要翻译： 含有硫酸铁的熔融硫酸铵可以长时间用硫或硫化合物还原，只要这些不纯的硫酸铵的一部分被取出，处理除铁并送回还原区。
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公开(公告)号：US3966891A
公开(公告)日：1976-06-29
申请号：US406348
申请日：1973-10-15
申请人： Philippe Renault , Andre Deschamps , Claude Dezael
发明人： Philippe Renault , Andre Deschamps , Claude Dezael
IPC分类号： B01D53/50 , B01D53/77 , C01B17/05 , C01B17/06 , C01B17/04 , C01B17/60 , C01C1/244 , C01D5/08
摘要： A solution of sodium sulfite or sulfide is reacted with ammonium sulfate, so as to produce a gas containing SO.sub.2 or H.sub.2 S, NH.sub.3 and H.sub.2 O, which is thereafter treated for sulfur production and NH.sub.3 recovery, and a liquid outflow containing sodium sulfate which is reacted with CO.sub.2 and NH.sub.3, in order to produce NaHCO.sub.3 and regenerate the ammonium sulfate. NaHCO.sub.3 may be converted to sodium carbonate and CO.sub.2, the latter being re-used in the process.
摘要翻译： 将亚硫酸钠或硫化物的溶液与硫酸铵反应，以产生含有SO 2或H 2 S，NH 3和H 2 O的气体，然后处理硫的生成和NH 3回收，以及含有硫酸钠的液体流出物，其与 CO 2和NH 3，以产生NaHCO 3并再生硫酸铵。 可以将NaHCO 3转化为碳酸钠和CO 2，后者在该过程中被重新使用。
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6.发明授权
公开(公告)号：US3962410A
公开(公告)日：1976-06-08
申请号：US416868
申请日：1973-11-19
申请人： Philippe Renault , Andre Deschamps , Claude Dezael
发明人： Philippe Renault , Andre Deschamps , Claude Dezael
摘要： Process for purifying industrial gases containing hydrogen sulfide and for simultaneously producing elemental sulfur, comprising contacting said gases with an aqueous solution of sodium hydroxide and/or sodium carbonate, thereby forming a sodium sulfide solution, contacting said solution with an aqueous solution of ammonium hydrogen carbonate or with a gaseous mixture of CO.sub.2 and NH.sub.3 so as to precipitate sodium hydrogen carbonate, decomposing the latter to CO.sub.2 and neutral sodium carbonate which is recycled, heating the resulting liquid phase to produce NH.sub.3 and H.sub.2 S and producing sulfur by reacting the H.sub.2 S with sulfurous anhydride.
摘要翻译： 用于净化含有硫化氢的工业气体和用于同时生产元素硫的方法，包括使所述气体与氢氧化钠和/或碳酸钠的水溶液接触，从而形成硫化钠溶液，使所述溶液与碳酸氢铵水溶液接触 或用CO 2和NH 3的气体混合物，以便沉淀碳酸氢钠，将其分解成CO 2和中性碳酸钠，将其再循环，加热得到的液相以产生NH 3和H 2 S.并通过使H 2 S与亚硫酸酐反应产生硫 。
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公开(公告)号：US3943228A
公开(公告)日：1976-03-09
申请号：US419383
申请日：1973-11-27
摘要： Sulfur dioxide and ammonia remaining in waste-gas after partial purification thereof, for example by means of ammonia or ammonium sulfite solutions, are withdrawn from said gas by washing with a diluted aqueous solution of ammonium sulfate; the resulting ammonium sulfite containing solution is oxidized thereafter either by means of air or in an electrochemical cell.
摘要翻译： 通过用氨或亚硫酸铵溶液的部分纯化后残留在废气中的二氧化硫和氨通过用稀释的硫酸铵水溶液洗涤从所述气体中排出; 所得到的含亚硫酸铵的溶液随后通过空气或电化学电池被氧化。
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8.发明授权Process for purifying a sulfur dioxide containing gas by washing with an ammonia aqueous solution 失效通过用氨水洗涤来净化含二氧化硫的气体的方法
公开(公告)号：US4180550A
公开(公告)日：1979-12-25
申请号：US835085
申请日：1977-09-20
CPC分类号： C01B17/60 , B01D53/501
摘要： Process for purifying a sulfur dioxide containing gas, by washing with an ammonia aqueous solution, comprising the following steps:(a) contacting a sulfur dioxide containing gas with ammonia and/or ammonium sulfite in the presence of water, to form a solution containing ammonium bisulfite and/or sulfite;(b) reacting at least a portion of the solution obtained in step (a) with ammonium bisulfate, so as to decompose the ammonium bisulfite and sulfite and to obtain ammonium sulfate as an aqueous solution and gaseous sulfur dioxide;(c) recovering the sulfur dioxide;(d) heating the aqueous solution obtained in step (b) for vaporizing at least a portion of the water;(e) heating the product from step (d) to convert the ammonium sulfate to ammonium bisulfate and gaseous ammonia;(f) separating the gaseous ammonia obtained in step (e) and feeding it to step (a) either as such or as ammonium sulfite and,(g) feeding to step (b) the ammonium bisulfate obtained in step (e) either as such or after dissolution in water, wherein, in order to avoid an accumulation of ammonium sulfate and/or bisulfate, due the undesirable formation of ammonium sulfate, at least a portion of the ammonium sulfate and/or bisulfate from step (e) is heated with a molybdenum and/or tungsten compound for converting a portion of said ammonium sulfate and/or bisulfate to sulfur dioxide and ammonia, which are fed back to step (a).
摘要翻译： 通过用氨水洗涤来净化含二氧化硫气体的方法，包括以下步骤：（a）在水存在下使含二氧化硫的气体与氨和/或亚硫酸铵接触，形成含有铵的溶液 亚硫酸氢盐和/或亚硫酸盐; （b）使步骤（a）中获得的溶液的至少一部分与硫酸氢铵反应，以分解亚硫酸氢铵和亚硫酸盐，得到作为水溶液和气态二氧化硫的硫酸铵; （c）回收二氧化硫; （d）加热步骤（b）中获得的水溶液以使至少一部分水蒸发; （e）加热来自步骤（d）的产物以将硫酸铵转化为硫酸氢铵和气态氨; （f）分离步骤（e）中获得的气态氨，并将其进料到步骤（a）中，或者以亚硫酸铵形式进料到步骤（a），和（g）将步骤（b）中得到的硫酸氢铵 这样或之后溶解在水中，其中为了避免硫酸铵和/或硫酸氢盐的积聚，由于不期望的形成硫酸铵，将来自步骤（e）的至少一部分硫酸铵和/或硫酸氢盐加热 与用于将一部分所述硫酸铵和/或硫酸氢盐转化成二氧化硫和氨的钼和/或钨化合物反馈到步骤（a）。
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公开(公告)号：US4725715A
公开(公告)日：1988-02-16
申请号：US856666
申请日：1986-04-25
CPC分类号： F23D14/42
摘要： A tubular case closed at its two ends respectively by a first side wall carrying two electric supply terminals and a second side wall carrying a hot gas outlet nozzle for discharging a jet of heated oxygen. A heating tube extends axially through the case constituting a heating resistance, the wall or this heating tube being provided in one of its end portions with at least one opening for the passage of the gas to the interior of the heating tube and the outlet nozzle. The case also includes a heat exchanger of thermoconductive material and gas pre-heating means.
摘要翻译： 管状壳体的两端分别由承载两个电源端子的第一侧壁和承载用于排出加热氧气射流的热气体出口喷嘴的第二侧壁封闭。 加热管轴向延伸通过构成耐热性的壳体，壁或该加热管设置在其一个端部中，至少一个开口用于气体通向加热管和出口喷嘴的内部。 该情况还包括热传导材料和气体预热装置的热交换器。
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公开(公告)号：US4316804A
公开(公告)日：1982-02-23
申请号：US163894
申请日：1980-06-27
CPC分类号： E02B15/04 , E02B3/023 , Y10S210/924
摘要： The system comprises a flexible line provided with means for collecting products scattered at the water bottom by circulating the flexible line in contact with these products. On the rising portion of the path followed by the flexible line, the collecting means are passed through a tubular casing for simultaneously protecting the surrounding water against pollution from products released, while hoisting the products to the surface.
摘要翻译： 该系统包括柔性线，其具有用于通过使与这些产品接触的柔性线循环来收集在水底分散的产物的装置。 在柔性线路的上升部分上，收集装置通过管状壳体，以同时保护周围的水免受产品释放的污染，同时将产品提升到表面。
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