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公开(公告)号：US6051055A
公开(公告)日：2000-04-18
申请号：US117566
申请日：1998-07-28
申请人： Naohiko Ukawa , Toru Takashina , Susumu Okino , Kazuaki Kimura , Koichiro Iwashita , Kouji Ikeda , Heiji Tanaka
发明人： Naohiko Ukawa , Toru Takashina , Susumu Okino , Kazuaki Kimura , Koichiro Iwashita , Kouji Ikeda , Heiji Tanaka
CPC分类号： B01D53/18 , B01D53/504 , B01D53/80 , B01J19/26 , B05B1/205
摘要： An exhaust gas desulfurization system includes a spray pipe which is provided with a plurality of nozzles in the lengthwise direction and whose one end is closed and arranged horizontally in an absorption tower through which the exhaust gas passes vertically. Absorbent slurry is fed from the other end of the spray pipe and is injected upward from the nozzles, by which absorbent slurry is brought into contact with the exhaust gas to perform treatment in the absorption tower. The flow passage on the closed end side of the pipe is present in a shape such that the flow passage cross-sectional area decreases toward the closed end.
摘要翻译： PCT No.PCT / JP97 / 00152 Sec。 371日期1998年7月28日第 102（e）1998年7月28日PCT 1997年1月24日PCT PCT。 第WO97 / 27931号公报 日期1997年8月7日废气脱硫系统包括喷管，该喷管在长度方向上设置有多个喷嘴，其一端封闭并且水平地布置在废气垂直通过的吸收塔中。 吸收剂浆料从喷射管的另一端进料，并从喷嘴向上注入，使吸收剂浆料与废气接触，以在吸收塔中进行处理。 管的封闭端侧的流路的形状为使流路截面积向封闭端减少的形状。
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公开(公告)号：US06511636B1
公开(公告)日：2003-01-28
申请号：US09407042
申请日：1999-09-27
申请人： Taku Shimizu , Kazuaki Kimura , Kiyoshi Okazoe , Atsushi Tatani , Naohiko Ukawa , Masao Hino , Susumu Okino , Takashi Haruki , Toru Takashina , Eiji Ochi
发明人： Taku Shimizu , Kazuaki Kimura , Kiyoshi Okazoe , Atsushi Tatani , Naohiko Ukawa , Masao Hino , Susumu Okino , Takashi Haruki , Toru Takashina , Eiji Ochi
IPC分类号： B01D5000
CPC分类号： C10M173/02 , B01D53/46 , B01D53/501 , C10M2215/042 , C10M2229/045 , C10M2229/046 , C10N2220/13 , C10N2240/58 , F23J15/003 , F23J15/022 , F23J2215/20 , F23J2219/50
摘要： Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se is transformed into insoluble compound, and Se is separated; (2) combustion exhaust gas is cooled to 350° C. or less, dust is separated, Se elution preventive agent is added, and dust is formed into scale; (3) dust in combustion exhaust gas is collected by dust collector, dust is formed into slurry by making use of part of circulation liquid in desulfurization apparatus, and tetravalent Se in dust slurry is transformed into insoluble compound, which is separated into solid and liquid; (4) dust is separated from combustion exhaust gas by dust collector, and it is heated to gasify Se, and is led into desulfurization apparatus, etc., and formed into slurry, and Se is made into insoluble compound; and (5) a treating agent for making tetravalent Se insoluble is added to part of circulation liquid in desulfurization apparatus, and it is sprayed into combustion exhaust gas to make Se insoluble.
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公开(公告)号：US06203598B1
公开(公告)日：2001-03-20
申请号：US09246130
申请日：1999-02-08
申请人： Shigeo Hasegawa , Naohiko Ukawa , Susumu Okino , Koichiro Iwashita , Kazuaki Kimura , Atsushi Yoshioka , Yoshimitsu Kawanishi , Shoichi Onishi , Toru Takashina , Toyoshi Nakagawa
发明人： Shigeo Hasegawa , Naohiko Ukawa , Susumu Okino , Koichiro Iwashita , Kazuaki Kimura , Atsushi Yoshioka , Yoshimitsu Kawanishi , Shoichi Onishi , Toru Takashina , Toyoshi Nakagawa
IPC分类号： B01D5310
CPC分类号： B01D53/75 , B01D53/501 , B01D53/502 , B01D53/508 , B01D2251/404 , B01D2257/302
摘要： This invention relates to a flue gas treating process including a heat recovery step for recovering heat from flue gas by means of a heat exchanger (4) and thereby cooling the flue gas, and a subsequent absorption step for bringing the flue gas into gas-liquid contact with an absorbing fluid (D) in absorption towers (12, 13) so as to remove at least SO2 present in the flue gas by absorption into the absorbing fluid (D), which is characterized, for example, in that a powder addition step for spraying a powder collectable in the absorption step into the flue gas is provided prior to the heat recovery step. This invention makes it possible to provide a flue gas treating process in which a countermeasure against SO3 present in flue gas can be easily achieved without resorting to ammonia injection and the flue gas can further be purified without the disadvantage of causing the injected substance to remain in the treated flue gas.
摘要翻译： 烟气处理方法技术领域本发明涉及一种烟道气处理方法，其包括通过热交换器（4）从烟道气中回收热量并由此冷却烟道气的热回收步骤，以及随后的吸收步骤，用于将烟道气引入气液 与吸收塔（12,13）中的吸收流体（D）接触，以便通过吸收到吸收流体（D）中来除去烟道气中存在的至少SO 2，其特征在于：粉末添加 在热回收步骤之前提供将在吸收步骤中可收集的粉末喷射到烟道气中的步骤。 本发明使得可以提供一种烟道气处理方法，其中可以容易地实现对烟气中存在的SO 3的对策，而不需要采用氨注射，并且可以进一步净化烟道气，而不会导致注入物质残留 经处理的烟气。
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公开(公告)号：US6113863A
公开(公告)日：2000-09-05
申请号：US592116
申请日：1996-01-26
申请人： Taku Shimizu , Kazuaki Kimura , Kiyoshi Okazoe , Atsushi Tatani , Naohiko Ukawa , Masao Hino , Susumu Okino , Takashi Haruki , Toru Takashina , Eiji Ochi
发明人： Taku Shimizu , Kazuaki Kimura , Kiyoshi Okazoe , Atsushi Tatani , Naohiko Ukawa , Masao Hino , Susumu Okino , Takashi Haruki , Toru Takashina , Eiji Ochi
CPC分类号： C10M173/02 , B01D53/46 , B01D53/501 , F23J15/003 , F23J15/022 , C10M2215/042 , C10M2229/045 , C10M2229/046 , C10N2220/13 , C10N2240/58 , F23J2215/20 , F23J2219/50
摘要： Five combustion exhaust gas treatment systems capable of removing dust and selenium (Se) in combustion exhaust gas and making harmless are proposed: (1) combustion exhaust gas is cooled to 350.degree. C. or less, dust is separated, Se is transformed into insoluble compound, and Se is separated; (2) combustion exhaust gas is cooled to 350.degree. C. or less, dust is separated, Se elution preventive agent is added, and dust is formed into scale; (3) dust in combustion exhaust gas is collected by dust collector, dust is formed into slurry by making use of part of circulation liquid in desulfurization apparatus, and tetravalent Se in dust slurry is transformed into insoluble compound, which is separated into solid and liquid; (4) dust is separated from combustion exhaust gas by dust collector, and it is heated to gasify Se, and is led into desulfurization apparatus, etc., and formed into slurry, and Se is made into insoluble compound; and (5) a treating agent for making tetravalent Se insoluble is added to part of circulation liquid in desulfurization apparatus, and it is sprayed into combustion exhaust gas to make Se insoluble.
摘要翻译： 提出了能够除去燃烧废气中的灰尘和硒（Se），无害化的五种燃烧废气处理系统：（1）燃烧废气冷却至350℃以下，灰尘分解， 化合物，Se分离; （2）燃烧废气冷却至350℃以下，粉尘分离，加入Se洗脱剂，灰尘形成规模; （3）燃烧废气中的灰尘由集尘器收集，利用脱硫装置中循环液的一部分形成粉尘，并将粉尘浆中的四价硒转化为不溶性化合物，分离成固体和液体 ; （4）灰尘通过集尘器与燃烧废气分离，并被加热气化Se，并被引入脱硫装置等，形成浆料，Se成不溶性化合物; （5）在脱硫装置的一部分循环液中加入四价Se不溶性的处理剂，喷入燃烧废气中使Se不溶。
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公开(公告)号：US06656440B2
公开(公告)日：2003-12-02
申请号：US09914778
申请日：2001-09-05
申请人： Toru Takashina , Naohiko Ukawa , Kenji Inoue
发明人： Toru Takashina , Naohiko Ukawa , Kenji Inoue
IPC分类号： B01D5350
CPC分类号： B01D53/504 , B01D53/502 , B01D53/80
摘要： A method and system for desulfurizing flue gas in which desulfurization is effected by bringing absorbent slurry containing limestone into contact with flue gas. The method classifies absorbent slurry extracted from a desulfurization absorber, returns a fine-side fluid to the desulfurization absorber, and sends a coarse-side fluid to a solid-liquid separator. Supplied limestone powder is mixed to yield limestone slurry by a solid-liquid mixer, and the limestone slurry is classified, sending the small-particle fluid component thereof to the desulfurization absorber, and sending the large-particle fluid component thereof to a limestone fine grinder. And, limestone contained in the large-particle fluid component is finely ground by the limestone fine grinder and the finely ground limestone is sent to the desulfurization absorber. According to the desulfurization method and system, the concentration of limestone in the desulfurization absorber is increased while the concentration of residual limestone in by-product gypsum is kept low, whereby the desulfurization performance of the absorber can be enhanced, and the operation power for the whole system can be decreased.
摘要翻译： 通过使含有石灰石的吸收剂浆料与烟气接触来进行脱硫的脱硫烟道气的方法和系统。 该方法将从脱硫吸收器中提取的吸收剂浆料分类，将细边流体返回到脱硫吸收器，并将粗侧流体送至固液分离器。 将供给的石灰石粉末通过固液混合器混合，得到石灰石浆料，将石灰石浆料分级，将其中的小粒子流体成分送入脱硫吸收塔，将大颗粒流体成分送入石灰石细磨 。 并且，大颗粒流体组分中所含的石灰石由石灰石细研磨机精细研磨，精细研磨的石灰石被送到脱硫吸收器。 根据脱硫方法和系统，脱硫吸收剂中石灰石的浓度增加，副产物石膏中残留石灰石的浓度降低，吸收剂的脱硫性能可以提高， 整个系统可以减少。
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公开(公告)号：US06863875B1
公开(公告)日：2005-03-08
申请号：US09658928
申请日：2000-09-11
摘要： In a flue gas treating system, an absorption tower (21), a reheating section (22) and a fan (23) are arranged in line on a vertical axis so as to function as at least a part of a stack for emitting the treated flue gas into the atmosphere. Moreover, in a flue gas treating process, the amount of ammonia injected in the denitration step (a denitrator (2)) and/or the amount of ammonia at a point downstream of the denitration step are determined so as to be on such an excessive level that ammonia or ammonium salt will remain in the flue gas introduced into the desulfurization step (absorption tower (21)). Thus, the size and cost of the equipment can be reduced.
摘要翻译： 在烟道气处理系统中，吸收塔（21），再加热部分（22）和风扇（23）在垂直轴线上排成一列，以起到堆叠的至少一部分的作用， 烟气进入大气。 此外，在烟道气处理工序中，确定脱硝工序中注入的氨的数量（脱硝装置（2））和/或在脱硝工序的下游一点处的氨的量为过度 使得氨或铵盐保留在引入脱硫步骤（吸收塔（21））的烟道气中。 因此，可以减少设备的尺寸和成本。
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公开(公告)号：US5605655A
公开(公告)日：1997-02-25
申请号：US413722
申请日：1995-03-31
申请人： Makiichi Ishihara , Takakazu Sunada , Shigeo Hasegawa , Naohiko Ukawa , Toru Takashina , Yukio Kita , Kouichiro Iwashita , Kousuke Yamashita , Junji Ozaki , Kaname Kaneshige
发明人： Makiichi Ishihara , Takakazu Sunada , Shigeo Hasegawa , Naohiko Ukawa , Toru Takashina , Yukio Kita , Kouichiro Iwashita , Kousuke Yamashita , Junji Ozaki , Kaname Kaneshige
CPC分类号： B01J19/0066 , B01D53/185 , B01D53/504 , B01J10/002 , B01J19/26 , B05B15/069 , Y10S261/39 , Y10S261/75
摘要： A gas-liquid contacting apparatus in which spray nozzles for spraying slurry solution upward are arranged in a tower body through which gas passes, wherein a liquid inlet portion of the spray nozzle is of a bell shape having a radius of curvature of 0.2 times or more of the diameter of a liquid discharge port of the spray nozzle, and a ceramic nozzle support structure comprises: (A) a ceramic nozzle having a ridge portion on the outer peripheral surface of a nozzle body; (B) a tightening flange including a flange body having an aperture larger than the outside shape of the nozzle body and a central cylindrical portion extending substantially concentrically with the nozzle body from lower surface of the flange body, the tightening flange having through holes in the wall of central cylindrical portion thereof; (C) a support nozzle consisting of a cylindrical body having an inside diameter larger than the central cylindrical portion of tightening flange and connected to the tightening flange by bolting via the flange body at the upper portion of the cylindrical body; and (D) an elastomeric resin filled in a space between the nozzle and the support nozzle so that the outside and inside of the central cylindrical portion of tightening flange are integrated via the through holes.
摘要翻译： 一种气液接触装置，其中向上喷射浆液的喷嘴布置在气体通过的塔体中，其中喷嘴的液体入口部分具有曲率半径为0.2倍或更大的钟形形状 所述喷嘴支撑结构包括：（A）在喷嘴体的外周面上具有脊部的陶瓷喷嘴， （B）包括具有比所述喷嘴体的外形大的孔的凸缘体的紧固凸缘和从所述凸缘体的下表面与所述喷嘴体大致同心地延伸的中心圆筒部，所述紧固凸缘在所述凸缘主体中具有通孔 其中心圆柱形部分的壁; （C）支撑喷嘴，其由具有大于紧固凸缘的中心圆柱形部分的内径的圆柱形主体组成，并通过在圆柱体的上部处的凸缘体进行螺栓连接而与紧固凸缘连接; 和（D）填充在喷嘴和支撑喷嘴之间的空间中的弹性体树脂，使得紧固凸缘的中心圆柱形部分的外部和内部通过通孔一体化。
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公开(公告)号：US5616290A
公开(公告)日：1997-04-01
申请号：US650710
申请日：1996-05-20
申请人： Makiichi Ishihara , Takakazu Sunada , Shigeo Hasegawa , Naohiko Ukawa , Toru Takashina , Yukio Kita , Kouichiro Iwashita , Kousuke Yamashita , Junji Ozaki , Kaname Kaneshige
发明人： Makiichi Ishihara , Takakazu Sunada , Shigeo Hasegawa , Naohiko Ukawa , Toru Takashina , Yukio Kita , Kouichiro Iwashita , Kousuke Yamashita , Junji Ozaki , Kaname Kaneshige
CPC分类号： B01J19/0066 , B01D53/185 , B01D53/504 , B01J10/002 , B01J19/26 , B05B15/069 , Y10S261/39 , Y10S261/75
摘要： A gas-liquid contacting apparatus in which spray nozzles for spraying slurry solution upward are arranged in a tower body through which gas passes, wherein a liquid inlet portion of the spray nozzle is of a bell shape having a radius of curvature of 0.2 times or more of the diameter of a liquid discharge port of the spray nozzle, and a ceramic nozzle support structure comprises: (A) a ceramic nozzle having a ridge portion on the outer peripheral surface of a nozzle body; (B) a tightening flange including a flange body having an aperture larger than the outside shape of the nozzle body and a central cylindrical portion extending substantially concentrically with the nozzle body from lower surface of the flange body, the tightening flange having through holes in the wall of central cylindrical portion thereof; (C) a support nozzle consisting of a cylindrical body having an inside diameter larger than the central cylindrical portion of tightening flange and connected to the tightening flange by bolting via the flange body at the upper portion of the cylindrical body; and (D) an elastomeric resin filled in a space between the nozzle and the support nozzle so that the outside and inside of the central cylindrical portion of tightening flange are integrated via the through holes.
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公开(公告)号：US5433936A
公开(公告)日：1995-07-18
申请号：US29430
申请日：1993-03-09
CPC分类号： B01D61/44 , B01D53/502
摘要： A flue gas desulfurization process which comprises the steps of absorbing and separating sulfur oxides from a combustion waste gas using a Ca compound and, as an absorption auxiliary agent, an organic acid which has carboxyl groups at opposite ends of a straight-chain hydrocarbon containing from 1 to 4 carbon atoms in a flue gas desulfurization apparatus, separating the waste water discharged from the desulfurization apparatus in an electrodialyzer which comprises an alternate array of univalent selective anion-exchange membranes and cation-exchange membranes into two solutions: a concentrated solution in which metallic and chlorine ions are concentrated and a dilute solution in which the metallic and chlorine ions are diluted and the organic acid is left behind, and then recycling the dilute solution as an absorbent to the flue gas desulfurization apparatus.
摘要翻译： 一种烟道气脱硫方法，包括以下步骤：使用Ca化合物吸收和分离来自燃烧废气的硫氧化物，并且作为吸收助剂，在含有 在烟道气脱硫装置中具有1至4个碳原子，将包含一价选择性阴离子交换膜和阳离子交换膜的交替排列的电渗析器中的脱硫装置排出的废水分离成两种溶液：浓缩溶液，其中 浓缩金属和氯离子，稀释金属离子和氯离子稀释后的有机酸，然后将作为吸收剂的稀释溶液再循环至烟道气脱硫装置。
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公开(公告)号：US06932952B2
公开(公告)日：2005-08-23
申请号：US10851331
申请日：2004-05-24
申请人： Masakazu Onizuka , Toru Takashina
发明人： Masakazu Onizuka , Toru Takashina
CPC分类号： B01D53/504 , B01D53/1481 , Y02A50/2349
摘要： A wet type exhaust gas desulfurization method includes sucking liquid in a liquid reservoir containing a sulphur compound formed from sulphur dioxide contained in exhaust gas so as to form a flow of the liquid, reducing the flow of the liquid in diameter to form a depressurized region in the flow, the reducing including passing the liquid through a reduction section which includes a reduction section plate having a reduction section hole and a peripheral portion surrounding the reduction section hole, the peripheral portion protruding toward the upstream side of the flow, introducing air into the depressurized region so as to generate a mixture stream of the air and the liquid, and spouting the mixture stream into the liquid reservoir. The reducing includes forming cavities in the flow, the forming cavities includes shearing the flow, and the shearing includes bringing the flow into contact with the peripheral portion.
摘要翻译： 湿式废气脱硫方法包括将液体吸入含有由废气中所含的二氧化硫形成的硫化合物的液体储存器中，以形成液体流，减少直径的液体的流动，形成减压区域 所述流动，所述还原包括使液体通过还原部分，所述还原部分包括具有还原部分孔的还原部分板和围绕所述还原部分孔的周边部分，所述周边部分朝向所述流动的上游侧突出，将空气引入 减压区域，以产生空气和液体的混合物流，并将混合物流喷射到液体储存器中。 还原包括在流动中形成空腔，成形腔包括剪切流动，剪切包括使流体与周边部分接触。
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