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21. 发明授权

US4990319A Process for producing ammonia and sulfur dioxide 失效
标题翻译：生产氨和二氧化硫的方法
公开(公告)号：US4990319A
公开(公告)日：1991-02-05
申请号：US322205
申请日：1989-03-13
申请人： Youji Takenouchi , Katsuhiko Nishiguchi , Kunio Abe
发明人： Youji Takenouchi , Katsuhiko Nishiguchi , Kunio Abe
IPC分类号： C01B17/50 , C01B17/96 , C01C1/02
CPC分类号： C01C1/028 , C01B17/504
摘要： A process for producing NH.sub.3 and SO.sub.2 from ammonium sulfate, which comprises(i) reacting ammonium sulfate with a metal oxide or hydroxide at a temperature of not more than 200.degree. C. to form NH.sub.3, water and a metal sulfate and recovering NH.sub.3,(ii) decomposing the metal sulfate in the presence of a reducing agent to form a metal oxide and SO.sub.2 and recovering SO.sub.2, and(iii) recycling the metal oxide to step (i) as such or after it is converted to a metal hydroxide.

22. 发明授权

US4867961A Method of removing sulphur dioxide from a gaseous stream 失效
标题翻译：从气流中除去二氧化硫的方法
公开(公告)号：US4867961A
公开(公告)日：1989-09-19
申请号：US160699
申请日：1988-02-26
申请人： Joseph Palmer
发明人： Joseph Palmer
IPC分类号： B01D53/50 , C01B17/50 , C01B17/74 , C01D5/00 , C01F5/08 , C01F5/30 , C01F5/40 , C01F11/24
CPC分类号： C01F11/24 , B01D53/501 , C01B17/501 , C01B17/74 , C01D5/00 , C01F5/08 , C01F5/30 , C01F5/40
摘要： Capture-fixation of SO.sub.2 from flue and non-ferrous smelter gases is achieved with the use of MgO aqueous slurry as an absorbing medium. During the absorption, most of the MgO is converted to MgSO.sub.4 and the rest is solubilized as MgSO.sub.3 and Mg(HSO.sub.3).sub.2. The clear solution obtained at the end of the absorption is brought to about 40.degree. C. and is treated with sulphuric acid in an amount representing at least 5% in excess of the stoichiometric requirement whereby sulphite and bisulphite of magnesium are converted to magnesium sulphate. The magnesium sulphate obtained above can be used in a two stage addition of potassium chloride to obtain magnesium chloride, and calcined dolomite added to the remainder whereby magnesium hydroxide is precipitated and may be filtered off from the resulting CaCl.sub.2 solution. The process provides a means of removing SO.sub.2 from flue and smelter gases and at the same time produces industrially important chemical products (SO.sub.2, H.sub.2 SO.sub.4, K.sub.2 SO.sub.4, MgO, CaCl.sub.2).
摘要翻译：通过使用MgO含水浆料作为吸收介质，可以实现烟道和有色金属冶炼气体SO2捕集固定。在吸收过程中，大部分的MgO被转化为MgSO 4，其余的以硫酸镁和Mg（HSO3）2的形式溶解。在吸收结束时获得的澄清溶液达到约40℃，并且用超过化学计量要求的至少5％的量的硫酸处理，从而将亚硫酸盐和亚硫酸氢盐转化成硫酸镁。得到的硫酸镁可以两步加入氯化钾，得到氯化镁，煅烧后的白云石加入其中，由此使氢氧化镁沉淀，并从所得的CaCl 2溶液中滤出。该方法提供了从烟道和冶炼气体中除去SO2的方法，同时产生工业上重要的化学产物（SO2，H2SO4，K2SO4，MgO，CaCl2）。

23. 发明授权

US4596699A Apparatus for burning hydrogen sulphide 失效
标题翻译：硫化氢燃烧装置
公开(公告)号：US4596699A
公开(公告)日：1986-06-24
申请号：US199830
申请日：1980-10-23
申请人： Guy Desgrandchamps , Georges Kvasnikoff , Claude Blanc
发明人： Guy Desgrandchamps , Georges Kvasnikoff , Claude Blanc
IPC分类号： C01B17/04 , C01B17/50
CPC分类号： C01B17/0421 , Y02P20/129
摘要： A process to produce sulphur from two acid gases both containing hydrogen sulphide and one of which contains ammonia, using a modified Claus technique.The acid gas containing ammonia is burnt in the presence of air under substoichiometric conditions in a first heat-reaction chamber, while the ammonia-free acid gas is burnt in a second heat-reaction chamber, forming a series with the first chamber, with the right quantity of air to provide a molar ratio of H.sub.2 S to SO.sub.2 of approximately 2/1 at the catalytic reaction stage inlet. The mixed effluents from both heat-reaction chambers may pass through a high-temperature residence chamber before being conveyed to the heat-recovery stage.Gas effluents from the heat-reaction stage contain H.sub.2 S and SO.sub.2 in the right ratio for the catalytic reaction stage, and no hydrocarbons or harmful quantities of NH.sub.3 and NO.
摘要翻译：使用改进的Claus技术从两种含有硫化氢并且其中一种含有氨的酸性气体产生硫的方法。含有氨的酸性气体在第一热反应室的亚化学计量条件下在空气存在下燃烧，而不含氨的酸性气体在第二热反应室中燃烧，与第一室反应形成串联，在催化反应级入口处提供大约2/1的H 2 S与SO 2的摩尔比。来自两个热反应室的混合流出物可以在被输送到热回收阶段之前通过高温驻留室。来自热反应阶段的气体废气含有H2S和SO2，催化反应阶段的比例正确，不含烃或有害数量的NH3和NO。

24. 发明授权

US4576814A Catalyst and process for oxidizing hydrogen sulfide 失效
标题翻译：用于氧化硫化氢的催化剂和方法
公开(公告)号：US4576814A
公开(公告)日：1986-03-18
申请号：US566296
申请日：1983-12-28
申请人： Robert H. Hass , John W. Ward
发明人： Robert H. Hass , John W. Ward
IPC分类号： B01J23/22 , C01B17/50 , C01B17/02 , C01B17/16 , C01B17/48
CPC分类号： B01J23/22 , C01B17/508
摘要： Catalysts comprising bismuth and vanadium components are highly active and stable, especially in the presence of water vapor, for oxidizing hydrogen sulfide to sulfur or SO.sub.2. Such catalysts have been found to be especially active for the conversion of hydrogen sulfide to sulfur by reaction with oxygen or SO.sub.2.
摘要翻译：包含铋和钒组分的催化剂是高活性和稳定的，特别是在水蒸气存在下，用于将硫化氢氧化成硫或SO 2。已经发现这样的催化剂对于通过与氧或SO 2反应将硫化氢转化为硫而言是特别有活性的。

25. 发明授权

US4503018A Desulfurization of phosphogypsum 失效
标题翻译：磷石膏脱硫
公开(公告)号：US4503018A
公开(公告)日：1985-03-05
申请号：US466111
申请日：1983-02-14
申请人： Samuel A. Gardner , Thomas E. Ban
发明人： Samuel A. Gardner , Thomas E. Ban
IPC分类号： C01B17/06 , C01B17/52 , C01F11/08 , C01B17/50
CPC分类号： C01B17/06 , C01B17/52 , C01F11/08
摘要： Phosphogypsum is mixed with fine coal, balled, and charged to a travelling grate where the charge is heated under reducing conditions to evolve sulfur and/or sulfur dioxide for conversion into sulfuric acid.
摘要翻译：磷石膏与精细的煤混合，球化并加入到移动炉排中，在还原条件下将电荷加热以产生用于转化成硫酸的硫和/或二氧化硫。

26. 发明授权

US4490347A Process for sulfuric acid regeneration 失效
标题翻译：硫酸再生方法
公开(公告)号：US4490347A
公开(公告)日：1984-12-25
申请号：US464429
申请日：1983-02-07
申请人： Peter G. Gelblum
发明人： Peter G. Gelblum
IPC分类号： C01B17/50 , C01B17/74 , C01B17/90 , C01B17/98
CPC分类号： C01B17/90 , C01B17/50 , Y02P20/129
摘要： Process for regenerating spent acid is improved by using oxygen-enriched air for combustion, recycling stack gases, and preheating spent acid and air fed to the furnace.
摘要翻译：通过使用富氧空气进行燃烧，回收烟道气体，以及预热耗尽的酸和进料到炉中的空气来改善废酸再生方法。

27. 发明授权

US4376108A Process and apparatus for reclaiming sulfur-containing waste materials 失效
标题翻译：回收含硫废物的工艺和设备
公开(公告)号：US4376108A
公开(公告)日：1983-03-08
申请号：US208536
申请日：1980-11-20
申请人： Norbert Lowiciki , Joachim Wolf , Wolfgang Schwarz
发明人： Norbert Lowiciki , Joachim Wolf , Wolfgang Schwarz
IPC分类号： C01B17/58 , C01B21/02 , C01B17/50 , C01G17/00
CPC分类号： C01B21/02 , C01B17/58 , Y02P20/129
摘要： Disclosed are a process and apparatus useful for reclaiming sulfur-containing waste materials such as waste or spent sulfuric acid and acid tars.The sulfur-containing waste material is burned in a multi-stage combustion furnace having, in sequence, a rotary furnace containing heated coke, an intermediate combustion chamber and a secondary combustion chamber. The temperatures, gas flow rates and amount of added air are carefully controlled.A separation gas is produced having a high sulfur dioxide content which can be used in the sulfuric acid contact process. The separation gas is free of nitrous oxides, hydrocarbons and sulfur trioxide.
摘要翻译：公开了用于回收含硫废物如废硫酸或废硫酸和酸焦油的方法和装置。含硫废料在多级燃烧炉中燃烧，该多级燃烧炉依次具有含有加热焦炭，中间燃烧室和二次燃烧室的旋转炉。仔细控制温度，气体流量和添加空气量。产生具有高二氧化硫含量的分离气体，其可用于硫酸接触过程。分离气体不含一氧化二氮，碳氢化合物和三氧化硫。

28. 发明授权

US4314982A Catalytic decomposition of H.sub.2 SO.sub.4 失效
标题翻译：催化分解H2SO4
公开(公告)号：US4314982A
公开(公告)日：1982-02-09
申请号：US50764
申请日：1979-06-21
申请人： John H. Norman , David G. Williamson
发明人： John H. Norman , David G. Williamson
IPC分类号： B01J27/053 , C01B17/50 , C01B17/74 , C01B17/48 , C01B3/02 , C01B17/52 , C01B17/90
CPC分类号： C01B17/50 , B01J27/053 , C01B17/745
摘要： A two-stage process for the catalytic decomposition of H.sub.2 SO.sub.4 wherein H.sub.2 SO.sub.4 in vapor form is contacted in a first stage with a platinum group metal catalyst at temperatures between about 700.degree. K. and 970.degree. K. The platinum group metal catalyst is supported on a substrate of titania, barium sulfate, zirconia, silica, zirconium silicate or a mixture thereof, and at least about 40 percent of the H.sub.2 SO.sub.4 is decomposed to SO.sub.2. Vapors from the first stage enter a second stage where they contact a copper oxide and iron oxide catalyst at a temperature above 970.degree. K. The second stage catalyst is supported on a substrate of barium sulfate, zirconium oxide or titanium oxide.
摘要翻译：用于催化分解H 2 SO 4的两阶段方法，其中蒸气形式的H 2 SO 4在第一阶段与铂族金属催化剂在约700℃和970℃之间的温度下接触。铂族金属催化剂负载在二氧化钛，硫酸钡，氧化锆，二氧化硅，硅酸锆或其混合物的底物，并且至少约40％的H 2 SO 4分解成SO 2。来自第一阶段的蒸气进入第二阶段，在第二阶段，它们在高于970℃的温度下接触氧化铜和氧化铁催化剂。第二阶段催化剂负载在硫酸钡，氧化锆或氧化钛的基材上。

29. 发明授权

US4267162A Process and apparatus for the exploitation of the sulfur compounds contained in gases containing oxygen and a high water vapor content 失效
标题翻译：用于开采含氧气体和高水蒸汽含量的气体中所含的硫化合物的方法和装置
公开(公告)号：US4267162A
公开(公告)日：1981-05-12
申请号：US36958
申请日：1979-05-07
申请人： Franz Maier
发明人： Franz Maier
IPC分类号： B01D53/26 , B01D53/28 , B01D53/48 , C01B17/50 , C01B17/52 , C01B17/54 , B01D19/00
CPC分类号： C01B17/54 , Y02P20/129
摘要： Sulfur compounds contained in gases containing oxygen and a high content of water vapor are exploited by removing the water vapor content by treating the gases with a glycol and then using the dried gas still containing sulfur compounds, as an oxidation gas for the burning of sulfur or for the roasting of sulfidic ores in the production of highly concentrated sulfuric acid. Apparatus for carrying out the process includes an absorber for absorption by the glycol of the water vapor contained in the gas. The absorber has an exhaust gas conduit connected to a combustion furnace or roasting furnace for the production of sulfur dioxide. A desorber is provided for distilling the water vapor from the glycol and is connected to the absorber by a ring conduit for the glycol enriched with water and for the dewatered glycol. Lastly, apparatus is provided for the heating of the glycol and the desorber.
摘要翻译：通过用二醇处理气体，然后使用仍含有硫化合物的干燥气体作为硫的燃烧的氧化气体除去水蒸汽含量，通过除去水蒸汽含量来利用含氧气体和高含水量的硫化合物，用于在生产高浓度硫酸时焙烧硫化矿石。用于进行该方法的装置包括用于吸收由二醇所包含的气体中的水蒸汽的吸收剂。吸收器具有连接到用于生产二氧化硫的燃烧炉或焙烧炉的废气导管。提供解吸器用于从二醇中蒸馏出水蒸汽，并通过用于富含水和脱水二醇的二醇的环管道与吸收器连接。最后，提供了用于加热二醇和解吸器的装置。

30. 发明授权

US4220634A Process for converting ammonium imidodisulfate, ammonium sulfamate and ammonium dithionate to sulfur dioxide and ammonia 失效
标题翻译：将亚氨二硫酸铵，氨基磺酸铵和连二硫酸铵转化为二氧化硫和氨的方法
公开(公告)号：US4220634A
公开(公告)日：1980-09-02
申请号：US002273
申请日：1979-01-10
申请人： Andre Deschamps , Claude Dezael , Sigismond Franckowiak , Henri Gruhier
发明人： Andre Deschamps , Claude Dezael , Sigismond Franckowiak , Henri Gruhier
IPC分类号： B01J23/00 , C01B17/50 , C01B17/90 , C01C1/02
CPC分类号： C01B17/90 , C01B17/501 , C01C1/028 , Y02P20/52
摘要： Ammonium imidodisulfate and ammonium sulfamate may be converted to sulfur dioxide and ammonia by heating them with a reducing agent or a catalyst in a bath of molten ammonium sulfate and ammonium bisulfate. The reducing agent is sulfur or a sulfur compound and the catalyst is selected from Mo, W, Cu, Fe, Co, Cr, Mn and Ni.
摘要翻译：亚胺二硫酸铵和氨基磺酸铵可以通过在熔融硫酸铵和硫酸氢铵浴中用还原剂或催化剂加热而转化为二氧化硫和氨。还原剂是硫或硫化合物，催化剂选自Mo，W，Cu，Fe，Co，Cr，Mn和Ni。

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