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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ammonium sulfate liquor in the prescrubber are recovered as product (126) from saturated aqueous ammonium sulfate withdrawn from the prescrubber.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。
    • 4. 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。
    • 8. 发明公开
    • Process and apparatus for generating elemental sulfur and re-usable metal oxide from spent metal sulfide sorbents
    • 用于生产单质硫和可重复使用的Metaloxid从Metalsulfidsorbentien排出的方法和装置。
    • EP0525931A2
    • 1993-02-03
    • EP92301846.9
    • 1992-03-04
    • General Electric Environmental Services, Inc.
    • Ayala, Raul EduardoGal, Eli (NMN)
    • C10K1/30C10K1/20C10K1/34C01B17/06C01B17/027B01D53/34
    • C01B17/06B01D53/508B01D53/74C01B17/027C10K1/20C10K1/30C10K1/34
    • Spent metal-sulfur compound is regenerated to re-usable metal oxide by moving a bed of spent metal-sulfur compound progressively through a single regeneration vessel having a first (36) and second (38) regeneration stage and a third cooling and purging stage (40). The regeneration is carried out and elemental sulfur is generated in the first stage (36) by introducing a first gas of sulfur dioxide which contains oxygen at a concentration less than the stoichiometric amount required for complete oxidation of the spent metal-sulfur compound. A second gas containing sulfur dioxide and excess oxygen at a concentration sufficient for complete oxidation of the partially spent metal-sulfur compound, is introduced into the second regeneration stage (38). Gaseous sulfur formed in the first regeneration stage (36) is removed prior to introducing the second gas into the second regeneration stage (38). An oxygen-containing gas is introduced into the third cooling and purging stage (46). Except for the gaseous sulfur removed from the first stage, the combined gases derived from the regeneration stages which are generally rich in sulfur dioxide and lean in oxygen, are removed from the regenerator as an off-gas and recycled as the first and second gas into the regenerator Oxygen concentration is controlled by adding air, oxygen-enriched air or pure oxygen to the recycled off-gas by suitable control means.
    • 用完的金属 - 硫化合物被再生通过逐渐通过一个单一的再生容器移动花费金属 - 硫化合物的一个床,其具有第一(36)和第二(38)再生阶段和第三冷却和净化阶段(至可重复使用的金属氧化物 40)。 再生被执行并且在第一阶段(36)通过引入含有氧的浓度小于所述废金属 - 硫化合物的完全氧化所需的化学计量量的二氧化硫的第一气体生成元素硫。 在足以用于部分废金属 - 硫化合物的完全氧化的浓度二氧化硫和过量氧的第二气体内藏,被引入到第二再生阶段(38)。 在第一再生阶段(36)而形成气态硫之前引入第二气体进入第二再生阶段(38)被去除。 含氧气体被引入到第三冷却和净化阶段(46)。 除了从第一级去除的气态硫,从再生阶段哪些基因反弹富含二氧化硫和在贫氧衍生的结合气体,从再生作为除去废气并再循环作为第一和第二气体进入 再生器中的氧浓度是通过合适的控制装置将空气,富氧空气或纯氧的再循环废气的控制。