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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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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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3.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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5.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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6.发明授权Process for converting heavy petroleum residues to hydrogen and gaseous distillable hydrocarbons 失效将重质石油残渣转化为氢气和气态可馏分烃的方法
公开(公告)号：US4609456A
公开(公告)日：1986-09-02
申请号：US699540
申请日：1985-02-08
IPC分类号： C10G47/02 , B01J23/00 , B01J23/02 , B01J23/22 , B01J23/78 , B01J27/00 , B01J27/232 , C10G11/12 , C10G47/04 , C10G47/26 , B01J23/90 , C10J3/46
摘要： The invention concerns a process for converting heavy petroleum residues to hydrogen and to gaseous and distillable hydrocarbons, comprising the association of a step of hydropyrolysis (inside tube 3) with a step of catalytic steam-gasification of the formed coke (outside tube 3), characterized in that the hydropyrolysis step is performed in the presence of a solid supporting a carbon gasification catalyst circulating between the hydropyrolysis zone and the coke steam-gasification zone, said steam-gasification being performed in the absence of oxygen.The petroleum residue, hydrogen and steam are introduced respectively through lines 5, 6 and 7.The products are withdrawn through line 10. Heat may be supplied by the radiating tube 4.
摘要翻译： 本发明涉及将重质石油残余物转化为氢气和气态和可馏出烃的方法，其包括加氢热解步骤（管3内）与成形焦炭（外管3）的催化蒸汽气化步骤的关联， 其特征在于，所述加氢热解步骤在支持在所述加氢热解区和所述焦炭蒸汽 - 气化区之间循环的碳气化催化剂的固体存在下进行，所述蒸汽气化在不存在氧的情况下进行。 石油渣，氢气和蒸汽分别通过管线5,6和7引入。产物通过管线10排出。热量可以由辐射管4供应。
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公开(公告)号：US4310497A
公开(公告)日：1982-01-12
申请号：US230174
申请日：1981-01-30
CPC分类号： B01D53/52 , C01B17/508
摘要： A process for purifying a gas containing hydrogen sulfide, wherein said gas is admixed with oxygen and contacted with a carbon mass of specific surface higher than 50 m2/g and containing at least one oxide and/or sulfate of iron and/or copper, at a temperature from 20.degree. to 170.degree. C., the operating conditions being so selected as to avoid a substantial oxidation of said mass and said mass being periodically regenerated by heating to 200.degree.-300.degree. C. in the presence of oxygen, the regenerating conditions being such as to avoid a substantial oxidation of the carbon mass.
摘要翻译： 一种纯化含有硫化氢的气体的方法，其中所述气体与氧气混合并与特定表面积高于50m2 / g并且含有至少一种铁和/或铜的氧化物和/或硫酸盐的碳质量块接触， 温度为20℃至170℃，选择操作条件以避免所述物质的实质氧化，并且所述物质通过在氧气存在下加热至200-300℃来定期再生，再生 条件是为了避免碳质量的显着氧化。
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8.发明授权Process for removing H.sub.2 S and CO.sub.2 from gases and regenerating the adsorbing solution 失效从气体中除去H {HD 2 {B S和CO（HD 2 {B）并再生吸附溶液的方法
公开(公告)号：US4163043A
公开(公告)日：1979-07-31
申请号：US889803
申请日：1978-03-24
IPC分类号： B01D53/52 , B01D53/77 , C01B17/52 , C01C1/22 , C01D1/04 , C01D1/20 , C01G3/00 , C01G3/12 , C02F1/58 , B01D53/34
摘要： H.sub.2 S and CO.sub.2 from a waste gas are absorbed in an ammoniacal or alkali metal hydroxide solution. The resultant sodium, potassium or ammonium sulfide solution is reacted with pulverized copper oxide and the resultant copper sulfide precipitate is separated and the resultant solution of increased sodium hydroxide, potassium hydroxide or ammonia content is recycled as absorbent for hydrogen sulfide and CO.sub.2. The copper sulfide is roasted to form recyclable copper oxide and product sulfur dioxide.
摘要翻译： 来自废气的H 2 S和CO 2被吸收在氨或碱金属氢氧化物溶液中。 所得的硫化钠，硫化钾或硫化铵溶液与粉碎的氧化铜反应，分离得到的硫化铜沉淀物，所得到的氢氧化钠，氢氧化钾或氨含量的溶液作为硫化氢和CO 2的吸收剂再循环。 硫化铜被焙烧以形成可回收的氧化铜和产物二氧化硫。
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9.发明授权
公开(公告)号：US4164543A
公开(公告)日：1979-08-14
申请号：US865287
申请日：1977-12-28
CPC分类号： C01B17/60 , B01D53/501
摘要： Process for regenerating brines containing simultaneously sodium sulfites and sulfates so as to produce sulfur dioxide and an alkaline solution usable for absorbing sulfur dioxide, comprising contacting the brine with ammonium bisulfate, sodium bisulfate and ammonium sulfite to produce sulfur dioxide and an enriched solution of sodium sulfate and ammonium sulfate, which is reacted with CO.sub.2 and ammonia to obtain solid sodium bicarbonate which is decomposed to form CO.sub.2 and an enriched solution of ammonium sulfate, containing dissolved ammonium bicarbonate, which is heated with a reducing agent so as to decompose the ammonium sulfate to ammonia and ammonium bisulfate which is partly reduced to gaseous ammonia and sulfur dioxide, said process including several recycling steps.
摘要翻译： 再生含有亚硫酸钠和硫酸盐的盐水以制备可用于吸收二氧化硫的二氧化硫和碱性溶液的方法，包括使盐水与硫酸氢铵，硫酸氢钠和亚硫酸铵接触以产生二氧化硫和富含硫酸钠的溶液 和硫酸铵，其与CO 2和氨反应以获得固体碳酸氢钠，其分解形成CO 2和含有溶解的碳酸氢铵的富含硫酸铵的溶液，其用还原剂加热以将硫酸铵分解成 氨和硫酸氢铵，其部分还原成气态氨和二氧化硫，所述方法包括若干回收步骤。
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公开(公告)号：US5059569A
公开(公告)日：1991-10-22
申请号：US299168
申请日：1989-01-19
CPC分类号： B01J29/26 , B01D53/8628 , B01J29/24 , Y02C20/10
摘要： The invention concerns, on one hand, a new zeolitic catalytic composition which comprises a small-pore mordenite present in the form of needles, exchanged with at least one metal chosen from the group consisting of cooper, vanadium, tungsten, iron, colbalt and molybdenum, and on the other hand, use of this catalytic composition as a catalyst for the reduction of nitrogen oxides by ammonia.
摘要翻译： 本发明一方面涉及一种新的沸石催化剂组合物，其包含以针形式存在的小孔丝光沸石，与选自铜，钒，钨，铁，钴和钼的至少一种金属交换 ，另一方面，使用该催化剂组合物作为用氨还原氮氧化物的催化剂。
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