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公开(公告)号：US08167975B2
公开(公告)日：2012-05-01
申请号：US12531603
申请日：2008-04-11
申请人： Jun Shimamura , Takanori Nakamoto , Toshio Katsube , Hirofumi Kikkawa , Hiroyuki Nosaka , Takayuki Saitou , Yoshinori Taguchi , Hiroshi Ishizaka
发明人： Jun Shimamura , Takanori Nakamoto , Toshio Katsube , Hirofumi Kikkawa , Hiroyuki Nosaka , Takayuki Saitou , Yoshinori Taguchi , Hiroshi Ishizaka
CPC分类号： B01D53/83 , B01D53/501 , B01D53/64 , B01D2253/102 , B01D2257/302 , B01D2257/602 , F23J15/003 , F23J2215/20 , F23J2215/60 , F23J2219/40
摘要： A system is provided that prevents inhibition of adsorption of Hg and other heavy metals by activated carbon or other heavy metal adsorbent due to prior adsorption of sulfur trioxide (SO3) in an exhaust gas containing SO3. As it has been found that while SO3 is adsorbed, the adsorption of SO3 precedes the adsorption of Hg and other heavy metals onto activated carbon, a basic substance injection system is disposed along an exhaust gas flow channel at an upstream side of an activated carbon injection system, thereby attaining effective removal of Hg and other heavy metals from the exhaust gas by adsorption thereof onto surface pores of the activated carbon. The SO3 concentration after removal by basic substance conversion is computed from the SO3 concentration before removal, and the activated carbon injection rate can be controlled based on the concentration after removal.
摘要翻译： 提供了一种系统，其防止了由于先前在含有SO 3的废气中吸附三氧化硫（SO 3）而使Hg和其它重金属被活性炭或其它重金属吸附剂吸附。 如已经发现，当吸附SO 3时，SO 3的吸附先于Hg和其他重金属吸附到活性炭上，基本物质注入系统沿着活性炭注入的上游侧的废气流动通道设置 从而通过将其吸附在活性炭的表面孔上从废气中有效地除去Hg和其它重金属。 通过碱性物质转化除去后的SO3浓度由去除前的SO3浓度计算，活性炭注入速率可以根据去除后的浓度进行控制。
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2.发明授权Wet-type flue gas desulfurization plant and method making use of a solid desulfurizing agent 失效湿式烟气脱硫装置及使用固体脱硫剂的方法
公开(公告)号：US5686053A
公开(公告)日：1997-11-11
申请号：US532759
申请日：1995-10-11
申请人： Hirofumi Kikkawa , Fumito Nakajima , Hiroyuki Kaku , Shigehito Takamoto , Hiroshi Ishizaka , Shigeru Nozawa , Masakatsu Nishimura , Takanori Nakamoto
发明人： Hirofumi Kikkawa , Fumito Nakajima , Hiroyuki Kaku , Shigehito Takamoto , Hiroshi Ishizaka , Shigeru Nozawa , Masakatsu Nishimura , Takanori Nakamoto
CPC分类号： B01D53/502 , B01D53/501 , B01D53/504 , B01D53/508 , Y10S423/05
摘要： A wet-type flue gas desulfurization method and plant making use of a solid desulfurizing agent in which exhaust gas exhausted from a combustion apparatus such as a boiler is brought into contact with absorbing liquid to absorb sulfur oxide from the exhaust gas into the absorbing liquid followed by neutralization of the absorbing liquid containing the sulfur oxide thus absorbed. The solid desulfurizing agent is selectively retained in an absorbing liquid neutralizing zone and the absorbing liquid, containing water as a main constituent and solid products formed from the absorbed sulfur oxide, is selectively removed from the neutralizing zone. In the neutralizing zone the upward flow of the absorbing liquid, optionally augmented by an upward flow of air or water, forms a fluidized bed of limestone particles, thereby preventing coating of the limestone by gypsum and thereby retaining reactivity of limestone. According to the present invention, coexistence of Al and F in the absorbing liquid seldom deteriorates the desulfurizing performance. Further, it is possible to reduce power and cost required to grind limestone and to achieve a higher desulfurizing performance.
摘要翻译： PCT No.PCT / JP95 / 00921 Sec。 371 1995年10月11日第 102（e）1995年10月11日日期PCT提交1995年5月11日PCT公布。 公开号WO95 / 31272 日期：1995年11月23日一种湿式烟气脱硫方法和使用固体脱硫剂的设备，其中从锅炉等燃烧装置排出的废气与吸收液体接触以从排气中吸收硫氧化物 进入吸收液体，然后中和含有如此吸收的硫氧化物的吸收液体。 选择性地将固体脱硫剂保持在吸收液中和区中，从中和区选择性地除去以水为主要成分的吸收液和由吸收的硫氧化物形成的固体产物。 在中和区中，任选地通过向上的空气或水流增加的吸收液体的向上流动形成石灰石颗粒的流化床，从而防止石膏被石膏包覆，从而保持石灰石的反应性。 根据本发明，吸收液中Al和F的共存很少使脱硫性能下降。 此外，可以降低研磨石灰石所需的功率和成本，并且实现更高的脱硫性能。
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公开(公告)号：US20100071348A1
公开(公告)日：2010-03-25
申请号：US12516845
申请日：2007-12-24
CPC分类号： F23J15/003 , B01D53/10 , B01D53/50 , B01D53/64 , B01D53/8625 , B01D2257/602 , F23J15/006 , F23J15/025 , F23J2215/60 , F23J2217/10 , F23J2219/40 , F23J2219/60 , F23J2219/70 , F23J2900/15081
摘要： After adjusting an exhaust gas temperature at an exit of a heat recovery unit (11) of an exhaust gas treating apparatus to not more than a dew point temperature of sulfur trioxide (SO3), a heavy metal adsorbent is supplied from a heavy metal adsorbent supply unit (16) disposed in an exhaust gas at an entrance of a precipitator (4) or an intermediate position within the precipitator (4), and the exhaust gas containing the heavy metal adsorbent is supplied into the precipitator (4). Preferably at this stage, the heavy metal adsorbent is supplied into the exhaust gas at the entrance of the precipitator (4) 0.1 seconds after the exhaust gas temperature at the exit of the heat recovery unit (11) has been adjusted to not more than the dew point temperature of SO3. Further preferably, in order to prevent acid corrosion of equipment, the heavy metal adsorbent is supplied after spraying an alkali into the exhaust gas at the entrance or exit of the heat recovery unit (11) and adjusting the exhaust gas temperature at the exit of the heat recovery unit to not more than the dew point temperature of SO3. Accordingly, even when coal with a high sulfur content is used as fuel, heavy metals in the exhaust gas can be removed effectively.
摘要翻译： 在废气处理装置的热回收单元（11）的出口处的排气温度调节至三氧化硫（SO3）的露点温度以下之前，重金属吸附剂由重金属吸附剂供给源 设置在除尘器（4）的入口处的排气中或者除尘器（4）内的中间位置的单元（16），并且将含有重金属吸附剂的排气供给到除尘器（4）中。 优选在此阶段，在热回收单元（11）的出口处的排气温度已经调整到不超过该温度的0.1秒之后，将重金属吸附剂供入到除尘器（4）入口处的废气中 露点温度SO3。 进一步优选为了防止设备的酸腐蚀，在热回收单元（11）的入口或出口处的排气中喷入碱后，再供给重金属吸附剂，并调节出口处的排气温度 热回收单位不得超过SO3的露点温度。 因此，即使使用具有高硫含量的煤作为燃料，也能够有效地除去废气中的重金属。
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4.发明申请Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device 失效含颗粒物废气排放控制过滤器，废气排放控制方法及装置公开(公告)号：US20070128089A1
公开(公告)日：2007-06-07
申请号：US10580506
申请日：2004-11-24
申请人： Yasuyoshi Kato , Takashi Michimoto , Eiji Miyamoto , Naomi Imada , Masatochi Fujisawa , Kazuki Kobayashi , Hiroshi Ishizaka , Takeshi Hirota
发明人： Yasuyoshi Kato , Takashi Michimoto , Eiji Miyamoto , Naomi Imada , Masatochi Fujisawa , Kazuki Kobayashi , Hiroshi Ishizaka , Takeshi Hirota
IPC分类号： B01D50/00
CPC分类号： F01N3/0231 , B01D53/9431 , B01J35/04 , F01N3/022 , F01N3/035 , F01N2330/42
摘要： A particulate matter-removing filter being resistant to clogging and ash blocking, requiring no special means such as back-washing and heating combustion, and being formed of inexpensive materials; and exhaust emission controlling method and device using this. (1) A particulate-matter-containing exhaust emission controlling filter which uses as a basic unit a pair of porous corrugated sheet and a porous flat sheet that support an exhaust emission controlling catalyst, has a molding formed by laminating the porous corrugated sheets so that their ridge lines alternately cross perpendicularly, has one of side surfaces, perpendicularly crossing the corrugated sheet ridge lines, of the molding or mutually-adjoining two surfaces that are the perpendicularly-crossing side surfaces sealed, and has exhaust gas in-flow passage and out-flow passage respectively formed between porous corrugated sheets via a porous flat sheet. (2) A filter having the exhaust emission controlling catalyst that is an oxidizing catalyst for oxidizing nitrogen monoxide in an exhaust gas.
摘要翻译： 一种颗粒状物质除去过滤器，不受阻塞和灰分阻塞，不需要特殊的方法，例如后洗和加热燃烧，并且由廉价的材料形成; 废气排放控制方法和装置。 （1）一种颗粒状废气排放控制过滤器，其使用一对多孔波纹板和支撑排气排放控制催化剂的多孔平板作为基本单元，具有通过层压多孔波纹板形成的成型体，使得 它们的脊线交替垂直地交叉，具有垂直交叉的侧表面密封的模制或相互邻接的两个表面垂直相交的波纹板脊线的一个侧表面，并且具有废气流入通道和出口 分别在多孔波纹片之间经由多孔平板形成。 （2）一种具有排气排放控制催化剂的过滤器，其是用于氧化废气中的一氧化氮的氧化催化剂。
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5.发明申请Wet Type Flue-Gas Desulfurization Apparatus and Thermal Power Plant Having the Same 审中-公开湿式烟气脱硫装置和相同的热电厂公开(公告)号：US20130036953A1
公开(公告)日：2013-02-14
申请号：US13571959
申请日：2012-08-10
CPC分类号： B01D53/78 , B01D53/504 , B01D53/64 , B01D53/75 , B01D2251/404 , B01D2251/606 , B01D2257/2045 , B01D2257/2047 , B01D2257/602 , F23J15/02 , F23J2215/20 , F23J2215/60 , F23J2219/40 , F23J2900/15041
摘要： A wet type flue-gas desulfurization apparatus, into which exhaust gas containing mercury goes, includes an upstream absorption tower, an upstream absorbent spray nozzle and a make-up water supply unit on an upstream side of a desulfurization apparatus body in a flow direction of the gas. The upstream absorption tower has a circulation tank reserving absorbent slurry. The make-up water supply unit supplies make-up water into the circulation tank to keep the chloride ion concentration of the absorbent in the circulation tank not lower than 50,000 ppm. Thus, it is possible to provide a wet type flue-gas desulfurization apparatus by which Hg can be prevented from being released again from the desulfurization apparatus, the purity of recovered gypsum can be increased and the usage of industrial water can be reduced.
摘要翻译： 含有汞的废气的湿式烟道气脱硫装置在脱硫装置主体的上游侧的流动方向上具有上游侧吸收塔，上游侧吸附喷嘴和补充供水单元， 气体。 上游吸收塔具有循环罐储存吸收剂浆液。 化妆水供应单元将补充水供给到循环罐中，以使吸收剂在循环罐中的氯离子浓度不低于50,000ppm。 因此，可以提供可以防止Hg从脱硫装置再次释放的湿式烟道气脱硫装置，可以提高回收的石膏的纯度，并且可以降低工业用水的使用。
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公开(公告)号：US08302388B2
公开(公告)日：2012-11-06
申请号：US12516845
申请日：2007-12-24
IPC分类号： F01N3/00
CPC分类号： F23J15/003 , B01D53/10 , B01D53/50 , B01D53/64 , B01D53/8625 , B01D2257/602 , F23J15/006 , F23J15/025 , F23J2215/60 , F23J2217/10 , F23J2219/40 , F23J2219/60 , F23J2219/70 , F23J2900/15081
摘要： After adjusting an exhaust gas temperature at an exit of a heat recovery unit (11) of an exhaust gas treating apparatus to not more than a dew point temperature of sulfur trioxide (SO3), a heavy metal adsorbent is supplied from a heavy metal adsorbent supply unit (16) disposed in an exhaust gas at an entrance of a precipitator (4) or an intermediate position within the precipitator (4), and the exhaust gas containing the heavy metal adsorbent is supplied into the precipitator (4). Preferably at this stage, the heavy metal adsorbent is supplied into the exhaust gas at the entrance of the precipitator (4) 0.1 seconds after the exhaust gas temperature at the exit of the heat recovery unit (11) has been adjusted to not more than the dew point temperature of SO3. Further preferably, in order to prevent acid corrosion of equipment, the heavy metal adsorbent is supplied after spraying an alkali into the exhaust gas at the entrance or exit of the heat recovery unit (11) and adjusting the exhaust gas temperature at the exit of the heat recovery unit to not more than the dew point temperature of SO3. Accordingly, even when coal with a high sulfur content is used as fuel, heavy metals in the exhaust gas can be removed effectively.
摘要翻译： 在废气处理装置的热回收单元（11）的出口处的排气温度调节至三氧化硫（SO3）的露点温度以下之前，重金属吸附剂由重金属吸附剂供给源 设置在除尘器（4）的入口处的排气中或者除尘器（4）内的中间位置的单元（16），并且将含有重金属吸附剂的排气供给到除尘器（4）中。 优选在此阶段，在热回收单元（11）的出口处的排气温度已经调整到不超过该温度的0.1秒之后，将重金属吸附剂供入到除尘器（4）入口处的废气中 露点温度SO3。 进一步优选为了防止设备的酸腐蚀，在热回收单元（11）的入口或出口处的排气中喷入碱后，再供给重金属吸附剂，并调节出口处的排气温度 热回收单位不得超过SO3的露点温度。 因此，即使使用具有高硫含量的煤作为燃料，也能够有效地除去废气中的重金属。
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公开(公告)号：US20100074817A1
公开(公告)日：2010-03-25
申请号：US12516835
申请日：2007-12-24
CPC分类号： F23J15/003 , B01D53/346 , B01D53/501 , B01D53/64 , B01D53/75 , B01D53/8625 , B01D2251/304 , B01D2251/306 , B01D2251/404 , B01D2251/502 , B01D2251/606 , B01D2251/608 , B01D2257/60 , B01D2257/602 , F23J15/006 , F23J2215/60 , F23J2217/10 , F23J2219/40 , F23J2219/70 , F23J2900/15081 , Y10S423/05 , Y10S423/06
摘要： The following devices are successively disposed in the following order from an upstream side to a downstream side in an exhaust gas duct of a combustion apparatus: an air preheater, preheating combustion air for use in an exhaust gas treating apparatus; a heat recovery unit, recovering exhaust gas heat at an exit of the air preheater; a precipitator, collecting soot/dust contained in an exhaust gas at an exit of the heat recovery unit; a wet flue gas desulfurizer, removing sulfur oxides contained in the exhaust gas at the exit of the precipitator; and a reheater, heating the exhaust gas at the exit of the wet flue gas desulfurizer. Each of the heat recovery unit and the reheater has a heat exchanger tube, and a circulation line is disposed to connect the heat exchanger tubes. A sulfur trioxide (SO3) removing agent is supplied to the upstream side of the heat recovery unit, and the temperature of the exhaust gas at the exit of the heat recovery unit is adjusted to not more than a dew point of sulfur trioxide. As the sulfur trioxide removing agent, use is preferably made of at least one among a sulfur trioxide adsorbent, a sulfur trioxide reducing agent, and a sulfur trioxide neutralizing agent. Thus, even when coal with a high sulfur content is used as fuel, heavy metals contained in the exhaust gas can be removed effectively from the exhaust gas.
摘要翻译： 在燃烧装置的排气管道中的上游侧到下游侧依次配置以下装置：空气预热器，预热用于废气处理装置的燃烧空气; 热回收单元，在空气预热器的出口处回收排气热; 除尘器，在热回收单元的出口收集废气中包含的灰尘/灰尘; 湿式烟道气脱硫器，去除除尘器出口处的废气中含有的硫氧化物; 和再加热器，在湿式烟道气脱硫器的出口加热废气。 热回收单元和再热器各具有热交换器管，并且设置循环管线以连接热交换器管。 向热回收装置的上游侧供给三氧化硫（SO 3）除去剂，将热回收装置的出口排出的温度调整为三氧化硫的露点以下。 作为三氧化硫除去剂，优选使用三氧化硫吸附剂，三氧化硫还原剂和三氧化硫中和剂中的至少一种。 因此，即使使用具有高硫含量的煤作为燃料，废气中所含的重金属也能够从废气中有效地除去。
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公开(公告)号：US20090173234A1
公开(公告)日：2009-07-09
申请号：US12295070
申请日：2007-03-27
申请人： Takuro Ueda , Atsushi Katagawa , Hiroshi Ishizaka
发明人： Takuro Ueda , Atsushi Katagawa , Hiroshi Ishizaka
IPC分类号： B01D47/06
CPC分类号： B01D53/504 , B01D53/79 , F23J15/04
摘要： An absorbing tower provided with plural spray headers (3) which each have a plurality of spray nozzles (5) and are arranged in a multi-stage state in the flow direction of exhaust gas, in which an absorption liquid containing a slurry of limestone or lime is sprayed through the nozzles (5) to absorb and remove sulfur oxide contained in exhaust gas, wherein each spray nozzle (5) is of an annular spray type (a hollow cone type) and the spray nozzles (5) in the neighborhood of the tower wall have such a structure that the fluid is sprayed radially at spray angles of 50 to 80° with the direction counter to the flow of exhaust gas as the center, while the nozzles (5) in the central part of the tower have such a structure that the fluid is sprayed radially at spray angles of 80 to 130° with the direction counter to the flow thereof as the center. According to the invention, the channeling of exhaust gas in the tower can be inhibited by using two kinds of spray nozzles (5) to thereby prevent the desulfurization performance from lowering caused by blow-by of exhaust gas in the neighborhood of the tower wall. Further, an extremely high pressure loss can be inhibited by the flow-regulating effect of sprayed droplets. Thus, a wet-type exhaust gas desulfurizer with a reduced total cost is obtained.
摘要翻译： 一种吸收塔，其具有多个喷雾头（3），每个喷头具有多个喷嘴（5），并且在排气的流动方向上以多级状态布置，其中含有石灰石或 石灰通过喷嘴（5）喷射以吸收和去除废气中所含的硫氧化物，其中每个喷嘴（5）是环形喷雾型（中空圆锥型），喷嘴（5）在附近 塔壁具有使流体以与废气流为中心相反的方向以50〜80°的喷射角径向喷射的结构，塔的中心部分的喷嘴（5）具有这样的结构 流体以与其作为中心的流动相反的方向以80至130°的喷雾角径向喷射的结构。 根据本发明，可以通过使用两种喷嘴（5）来抑制塔中排气的通道，从而防止由塔壁附近排气引起的脱硫性能降低。 此外，喷雾液滴的流动调节效果可以抑制极高的压力损失。 因此，获得总成本降低的湿式废气脱硫器。
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公开(公告)号：US5648048A
公开(公告)日：1997-07-15
申请号：US347487
申请日：1995-03-22
申请人： Hiroshi Kuroda , Fumito Nakajima , Masakatsu Nishimura , Hiroyuki Kaku , Shigeru Nozawa , Shigehito Takamoto , Takanori Nakamoto , Hirofumi Kikkawa , Hiroshi Ishizaka , Atsushi Katagawa , Mitsuharu Kon , Masayuki Yamamoto , Kunikatsu Yoshida
发明人： Hiroshi Kuroda , Fumito Nakajima , Masakatsu Nishimura , Hiroyuki Kaku , Shigeru Nozawa , Shigehito Takamoto , Takanori Nakamoto , Hirofumi Kikkawa , Hiroshi Ishizaka , Atsushi Katagawa , Mitsuharu Kon , Masayuki Yamamoto , Kunikatsu Yoshida
CPC分类号： B01D53/18 , B01D53/504
摘要： An elongated absorber housing, including an inlet duct and an outlet duct, is integrally provided on an upper portion of a circulation tank. The absorber is a self-supporting structure supported by only the circulation tank. At least the furthest upstream spraying stage in a spraying zone in the inlet duct includes spray pipes provided with spray nozzles for spraying an absorbing liquid in a direction cocurrent with gas flow, and at least the furthest downstream spraying stage includes spray nozzles for spraying the absorbing liquid in a direction countercurrent to the gas flow. The absorber is an integral structure in which the upper portion of the circulation tank forms a part of the duct, whereby the absorber is self-supportable and, moreover, is of a simple structure, giving it high strength and eliminating of the need for provision of fitments for supporting the absorber.
摘要翻译： PCT No.PCT / JP94 / 00583 Sec。 371日期：1995年3月22日 102（e）1995年3月22日PCT PCT 1994年4月7日PCT公布。 第WO94 / 23826号公报 日期：1994年10月27日一个细长的吸收器壳体，包括入口管道和出口管道，一体地设置在循环罐的上部。 吸收器是仅由循环罐支撑的自支撑结构。 至少在入口管道中喷洒区域中最远的上游喷洒阶段包括设置有用于以与气流并流的方式喷射吸收液体的喷嘴的喷射管，并且至少最下游的喷洒台包括用于喷射吸收 液体在与气流逆流的方向上。 吸收器是一体的结构，其中循环罐的上部形成管道的一部分，由此吸收器是可自我支撑的，此外，其具有简单的结构，赋予其高的强度并且消除了提供的需要 的用于支撑吸收体的配件。
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公开(公告)号：US08172931B2
公开(公告)日：2012-05-08
申请号：US12441648
申请日：2007-09-19
IPC分类号： B01D47/06
CPC分类号： B01D53/504 , B01D53/185 , B01D2251/404 , B01D2251/608 , B01D2257/2045 , B01D2257/2047
摘要： An absorbing tower is provided in its side wall with a gas entrance for introducing a combustion exhaust gas into the absorbing tower, and an absorbing liquid is sprayed from the nozzles of a spray header into the exhaust gas introduced to rise from the gas entrance. A trough is arranged in the side wall of the absorbing tower and above the gas entrance, and a nose having a horseshoe shape in a top plan view and extending into tower is disposed in the tower side wall portion of the gas entrance other than the portion arranging the trough and at the same or at substantially the same height as the portion of the trough. The absorbing liquid, which is sprayed from the nozzle and drops along the absorbing tower wall portion, is rescattered to the center portion of the absorbing tower excepting the entrance of the absorbing tower, so that the gas-liquid contact efficiency is improved while suppressing an increase in pressure loss, thereby to prevent the drift of the gas at the tower wall portion.
摘要翻译： 吸收塔在其侧壁上设置有用于将燃烧废气引入吸收塔的气体入口，并且吸收液体从喷雾头的喷嘴喷射到从气体入口引入的废气中。 在吸收塔的侧壁和气体入口的上方布置有槽，并且在顶部平面图中具有马蹄形并延伸到塔的鼻子设置在除了部分之外的气体入口的塔侧壁部分 布置槽并且与槽的部分处于相同或基本上相同的高度。 从喷嘴喷射并沿着吸收塔壁部滴下的吸收液被除去吸收塔的入口以外的吸收塔的中心部分，从而提高气液接触效率，同时抑制气液接触效率 增加压力损失，从而防止塔壁部分处的气体漂移。
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