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    • 2. 发明公开
    • Process for the simultaneous absorption of sulfur oxides and production of ammonium sulfate
    • Verfahren zur gleichzeitigen吸收von Schwefeloxide和Herstellung von硫酸铵。
    • EP0620187A1
    • 1994-10-19
    • EP94301937.2
    • 1994-03-18
    • General Electric Environmental Services, Inc.
    • Saleem, AbdusGal, EliBrown, Gregory N.Mengel, Michael L.
    • C01C1/247B01D53/34
    • C01C1/247B01D53/501
    • Process for the removal of sulfur oxides from sulfur oxide-containing gas with simultaneous production of ammonium sulfate. The process is carried out by first passing hot sulfur oxide-containing gas through a prescrubber wherein the gas contacts saturated aqueous ammonium sulfate liquor which is recycled in the prescrubber (10), followed by passing the prescrubbed gas through an absorber (40) wherein the prescrubbed gas contacts dilute aqueous ammonium sulfate liquor. The sulfur oxide in the sulfur oxide-containing gas is absorbed by the dilute aqueous ammonium sulfate liquor (48) in the absorber, and scrubbed gas is removed from the absorber. The dilute aqueous ammonium sulfate liquor is treated with ammonia (58) and air (82) and the absorbed sulfur dioxide is converted to ammonium sulfate in the liquor. The dilute ammonium sulfate liquor is recycled into contact with the prescrubbed gas in the absorber. Dilute aqueous ammonium sulfate liquor is removed from the absorber and added to the saturated aqueous ammonium sulfate liquor (34) in the prescrubber where it becomes saturated due to evaporation caused by the hot gas. Ammonium sulfate crystals form in the saturated aqueous ammonium sulfate liquor in the prescrubber are recovered as product (126) from saturated aqueous ammonium sulfate withdrawn from the prescrubber.
    • 同时生产硫酸铵从含硫氧化物气体中除去硫氧化物的方法。 该方法通过首先将含热硫氧化物的气体通过预浸料进行,其中气体接触饱和的硫酸铵水溶液,其在预冷器(10)中再循环,然后将预饱和气体通过吸收器(40),其中 预稀释气体接触稀硫酸铵水溶液。 含硫氧化物的气体中的硫氧化物被吸收器中的稀的硫酸铵水溶液(48)吸收,并且从吸收器中除去洗涤的气体。 用氨(58)和空气(82)处理稀硫酸铵水溶液,并将吸收的二氧化硫转化成液体中的硫酸铵。 稀释的硫酸铵液体被再循环到与吸收器中的预饱和气体接触。 稀释的硫酸铵水溶液从吸收器中除去并加入到预热器中的饱和的硫酸铵水溶液(34)中,由于热气体的蒸发而使其饱和。 在预聚物中从饱和的硫酸铵水溶液中形成的硫酸铵晶体作为产物(126)从从缓冲液中取出的饱和的硫酸铵水溶液中回收。
    • 5. 发明公开
    • Method and system for removal of sulfur compounds from gases and for regenerating spent sorbents
    • 用于从气体中除去硫化合物和用于再生用过的吸附剂的方法和设备。
    • EP0293688A2
    • 1988-12-07
    • EP88108108.7
    • 1988-05-20
    • General Electric Environmental Services, Inc.
    • Gal, Eli
    • B01D53/34B01D53/08C01B17/04
    • C01B17/50B01D53/0462B01D53/08B01D53/508B01D2253/1124B01D2253/304B01D2257/304B01D2257/308B01D2259/40005B01D2259/40007B01D2259/40079B01D2259/40081B01D2259/40088B01D2259/4009C01B17/20
    • A method and system for removing hydrogen sulfide from a hot gas. In a moving bed absorber, sulfur compounds in the hot gas moving in a direction which is countercurrent to the direciton of movement of the movable bed of metal oxide, react with metal oxide to form metal sulfide. The metal sulfide is regenerated to re-usable metal oxide in a moving bed regenerator. The regeneration is carried out with an oxygen-containing gas in which regenerator off-gas serves as a diluent to control oxygen concentration. In the regenerator, spent metal sulfide moves progressively through a single regeneration vessel having first, second and third regeneration stages. In the first and second regeneration stages, first and second oxygen and sulfur dioxide-containing gases move, respectively, in a direction which is cocurrent with the direction of movement of a movable bed of spent metal sulfide. In the third regeneration stage, an oxygen-containing gas moves in a direction which is countercurrent to the direction of movement of the movable bed of metal sulfide from the second regeneration stage. The combined gases derived from the first, second and third regeneration stages and which are rich in sulfur dioxide and lean in oxygen, are removed from the regenerator as off-gas and used as diluent with air, oxygen-enriched air or pure oxygen to provide the low oxygen concentration in the oxygen-containing gas introduced into the first and second regeneration stages.
    • 一种用于从热气体中除去硫化氢的方法和系统。 在移动床吸收器,热气体中的硫化合物的方向移动的所有这是逆流到金属氧化物的动床的移动direciton,与金属氧化物反应以形成金属硫化物。 金属硫化物被再生到可重复使用的金属氧化物在移动床再生器。 再生用执行以在其中再生器废气用作稀释剂,以控制氧浓度的含氧气体。 在再生器中,废金属硫化物逐渐移动通过单个再生容器,其具有第一,再生的第二和第三阶段。 在第一和第二再生阶段,第一和第二氧和含二氧化硫的气体的移动,分别在一个方向的所有这是并流与废金属硫化物的可移动床的移动方向。 在第三再生阶段,以便在一个方向上的含氧气体全部移动是逆流到金属硫化物的可移动床的移动从第二再生阶段中的方向。 从第一,第二和第三再生阶段衍生的和将合并的气体,该气体中含有丰富的二氧化硫和在贫氧,从再生作为废气中取出,用作与空气稀释剂,富氧空气或纯氧来提供 含氧气体中的氧浓度低引种到再生的第一和第二阶段。
    • 8. 发明公开
    • Regenerative process and system for the simultaneous removal of particulates and the oxides of sulfur and nitrogen from a gas stream
    • 用于从气流中同时去除微粒和硫和氮氧化物的再生方法和装置。
    • EP0504476A1
    • 1992-09-23
    • EP91118046.1
    • 1991-10-23
    • General Electric Environmental Services, Inc.
    • Cohen, Mitchell R.Gal, Eli
    • B01D53/34B01D53/60B01D53/83B01D53/90B01D53/96
    • B01D53/60Y02A50/2344Y02A50/2348
    • A process and system for simultaneously removing from a gaseous mixture, sulfur oxides by means of a solid sulfur oxide acceptor on a porous carrier, nitrogen oxides by means of ammonia gas and particulate matter by means of filtration and for the regeneration of loaded solid sulfur oxide acceptor. Finely-divided solid sulfur oxide acceptor is entrained in a gaseous mixture to deplete sulfur oxides from the gaseous mixture, the finely-divided solid sulfur oxide acceptor being dispersed on a porous carrier material having a particle size up to about 200 microns. In the process, the gaseous mixture is optionally pre-filtered to remove particulate matter and thereafter finely-divided solid sulfur oxide acceptor is injected into the gaseous mixture to form an entrained bed. Ammonia gas is also injected into the exhaust gas stream. A filter separates spent solid sorbent and particulate matter from clean gas. A classifier is used to separate mixtures of spent sorbent from particulate matter. A regenerator receives spent sorbents for regeneration and means are provided for passing regenerated finely-divided solid sorbent from the regenerator to the entrained bed reactor. A preferred sorbent is copper oxide on porous alumina carrier.
    • 一种用于通过一个多孔载体上的固体硫氧化物受体的手段从气体混合物中,硫氧化物同时去除过程和系统中,氮氧化物由氨气和颗粒物质的手段通过过滤和加载的固体硫氧化物的再生 受体。 细碎固体硫氧化物受体以气态混合物从气体混合物耗尽硫氧化物夹带,微细固体硫氧化物受体被分散在具有颗粒尺寸高达约200微米的多孔载体材料。 在这个过程中,气态混合物可以预先过滤以除去颗粒物质,然后细碎固体硫氧化物受体被注入到所述气体混合物,以形成在夹带床。 因此氨气注入到废气流中。 过滤器单独度过的固体吸附剂和颗粒物的清洁气体。 分类器是用于失效的吸附剂的混合物从颗粒物质中分离出来。 再生器可以接收废吸附剂再生和装置设置用于从上述再生到夹带床反应器通再生细碎固体吸附剂。 优选的吸附剂是多孔的氧化铝载体上的氧化铜。