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公开(公告)号：US07521032B2
公开(公告)日：2009-04-21
申请号：US10767783
申请日：2004-01-29
申请人： Shintaro Honjo , Kozo Iida , Susumu Okino , Kazuto Kobayashi , Kenichi Okada , Naoyuki Kamiyama , Shigeru Nojima , Yasuhiro Takeuchi , Tsuyoshi Ohishi
发明人： Shintaro Honjo , Kozo Iida , Susumu Okino , Kazuto Kobayashi , Kenichi Okada , Naoyuki Kamiyama , Shigeru Nojima , Yasuhiro Takeuchi , Tsuyoshi Ohishi
IPC分类号： B01D53/52
CPC分类号： B01D53/64 , B01D2257/406 , B01D2257/602 , F23J15/006 , F23J2215/60 , F23J2219/10 , F23J2219/40
摘要： The present invention provides a system for removing mercury in exhaust gas, in which mercury is removed from exhaust gas of a boiler, characterized in that between a denitrification apparatus and a wet type desulfurization apparatus, an NH3 decomposition catalyst and a mercury oxidation catalyst are provided, and mercury having been oxidized into mercury chloride is removed by the wet type desulfurization apparatus. Also, it provides a method for removing mercury in exhaust gas, characterized in that the mercury removing method includes an NH3 decomposition process and a mercury oxidation process, which are provided between the denitrification process and a wet desulfurization process, and mercury having been oxidized into mercury chloride is removed in the wet desulfurization process.
摘要翻译： 本发明提供了一种用于去除废气中的汞的系统，其中从锅炉废气中除去汞，其特征在于，在脱氮装置和湿式脱硫装置之间，提供NH 3分解催化剂和汞氧化催化剂 并且通过湿式脱硫装置除去氧化成氯化汞的汞。 另外，本发明提供一种除去排气中的汞的方法，其特征在于，除汞方法包括在脱氮工序与湿式脱硫工序之间设置的NH 3分解工序和水银氧化工序，将氧化为 在湿式脱硫工艺中除去氯化汞。
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公开(公告)号：US5282429A
公开(公告)日：1994-02-01
申请号：US897083
申请日：1992-06-11
申请人： Masami Kato , Tadashi Tanaka , Yasuki Nishimura , Katsutoshi Yata , Masahiko Nakao , Takeshi Sakai , Tsuyoshi Ohishi , Tsuneo Higashi
发明人： Masami Kato , Tadashi Tanaka , Yasuki Nishimura , Katsutoshi Yata , Masahiko Nakao , Takeshi Sakai , Tsuyoshi Ohishi , Tsuneo Higashi
CPC分类号： B03C3/01 , B03C3/014 , B03C3/019 , B03C3/74 , F23J15/006 , F23J2215/20 , F23J2217/102 , F23J2219/60
摘要： In a coal-fired boiler, a heat recovery unit is located upstream of a dry electrostatic precipitator so as to reduce the temperature of exhaust gas flowing to the dry electrostatic precipitator and thus prevent reverse ionization in the electrostatic precipitator. The heat recovery unit located upstream of the dry electrostatic precipitator will in no way be corroded even if the concentration of dust is reduced in the dry electrostatic precipitator. A desulfurization unit does not require a cooling/dust removing section and eliminates the need for a wet electrostatic precipitator. The dry electrostatic precipitator includes a gas passage divided into a plurality of parallel passages and dampers operable to close the passages. This arrangement prevents dust from being dispersed as a result of hammering without charge.
摘要翻译： 在燃煤锅炉中，热回收装置位于干式静电除尘器的上游，以便降低流向干式静电除尘器的废气的温度，从而防止静电除尘器中的反向电离。 即使在干式静电除尘器中灰尘浓度降低，位于干式静电除尘器上游的热回收单元也不会被腐蚀。 脱硫装置不需要冷却除尘部，不需要湿式静电除尘器。 干式静电除尘器包括分成多个平行通道的气体通道和可操作以封闭通道的阻尼器。 这种布置防止灰尘由于锤击而没有充电而分散。
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公开(公告)号：US5605552A
公开(公告)日：1997-02-25
申请号：US442405
申请日：1995-05-16
CPC分类号： B01D53/504 , B01D53/501
摘要： A wet type flue gas desulfurization apparatus in which desulfurization of flue gas is carried out through gas/liquid phase contact of flue gas with an absorbent slurry. More particularly, disclosed in a combined absorption tower comprising an absorbent slurry liquid tank, a thickening tank serving for concentration by settling of a reaction product slurry formed through the reaction of the absorbent and SO.sub.2 present in flue gas, an absorption section situated above said liquid tank for the gas/liquid contact of flue gas and the absorbent slurry as well as for carrying out the desulfurization reaction, and a stack section situated above said absorption section serving for the dispersion of the treated flue gas into the atmosphere, wherein the absorption section is provided with nozzles for upward spraying of the absorbent slurry, and flue gas introduced at the bottom of said absorption section and absorbent slurry sprayed through the nozzles are subjected to gas/liquid contact, and a unreacted portion of the absorbent slurry and a reaction product slurry descend into said liquid tank, and the reaction product slurry from said liquid a tank is introduced into said thickening tank.
摘要翻译： 一种通过烟气与吸收剂浆料的气/液相接触进行烟道气脱硫的湿式烟气脱硫装置。 更具体地说，在包括吸收浆料液体罐的组合吸收塔中，公开了一种用于通过沉淀通过吸收剂形成的反应产物浆料和用于存在于烟道气中的SO 2来浓缩的增稠罐，位于所述液体之上的吸收部分 用于烟气和吸收剂浆料的气/液接触以及用于进行脱硫反应的罐，以及位于所述吸收部分上方的用于将经处理的烟道气分散到大气中的堆叠部分，其中吸收部分 设置有用于向上喷射吸收剂浆料的喷嘴，并且引入在所述吸收部分的底部的烟道气和通过喷嘴喷射的吸收剂浆料遭受气/液接触，并且未反应部分的吸收剂浆料和反应产物 浆料下降到所述液体罐中，并且引入来自所述液体的反应产物浆料 进入增稠罐。
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4.发明授权Method of producing solid moldings from a by-product of wet limestone-gypsum desulfurization of flue gas 失效从烟气湿石灰石 - 石膏脱硫副产品生产固体成型品的方法
公开(公告)号：US5395561A
公开(公告)日：1995-03-07
申请号：US978259
申请日：1992-11-20
申请人： Naohiko Ukawa , Hiroshi Fujita , Toru Takashina , Masakazu Onizuka , Atsushi Tatani , Kenji Inoue , Tsuyoshi Ohishi
发明人： Naohiko Ukawa , Hiroshi Fujita , Toru Takashina , Masakazu Onizuka , Atsushi Tatani , Kenji Inoue , Tsuyoshi Ohishi
摘要： A method of producing solid molding products from a slurry which has undergone absorption in wet-limestone gypsum desulfurization of flue gas includes the steps of concentrating the gypsum-containing absorption slurry, mixing and kneading the solid concentrated slurry with flyash and quicklime or slaked lime, molding the mixture into a given shape using a mold and then curing a resulting molding product in a reaction chamber wherein a part of desulfurized gas is passed. The method also includes solidifying a molded product by drying with water-saturated hot air produced with heat recovered from the flue gas and with water added into a heat recovery process.
摘要翻译： 从在烟道气湿石灰石膏脱硫中经历吸收的浆料生产固体成型产品的方法包括浓缩含石膏的吸收浆料，将固体浓缩浆料与飞灰和生石灰或熟石灰混合和捏合的步骤， 使用模具将混合物成型为给定形状，然后在所述一部分脱硫气体通过的反应室中固化所得模制产品。 该方法还包括通过用从烟道气回收的热量产生的水饱和热空气和加入热回收过程中的水进行干燥来固化模制产品。
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