公开(公告)号：US6029100A

公开(公告)日：2000-02-22

申请号：US798859

申请日：1997-02-11

申请人： Koichiro Iwashita ,  Susumu Okino ,  Naohiko Ukawa ,  Masaru Sakamoto

发明人： Koichiro Iwashita ,  Susumu Okino ,  Naohiko Ukawa ,  Masaru Sakamoto

IPC分类号： B01D53/34 ,  B01D53/50 ,  B01D53/77 ,  G05B6/00

CPC分类号： B01D53/501 ,  B01D53/346 ,  Y10S423/05

摘要： There is provided a method for flue gas desulfurization which is capable of conducting minute control of oxidation and which is capable of maintaining the concentration of sulfurous acid in an absorbent liquid within a proper range in a highly reliable and efficient manner, even in the case where an abrupt change occurs in the operational conditions of the system. In the method for controlling the oxidation in flue gas desulfurization, the value of proportional sensitivity K in the feed back control process, which is based primarily on the oxidation-reduction potential, is increased depending on the deviation .epsilon. in a region where the detected oxidation reduction potential value PN is below the target oxidation reduction potential value SN in correspondence with the characteristic change of the oxidation-reduction potential against the concentration of sulfurous acid.

摘要翻译： 本发明提供了一种烟气脱硫方法，其能够进行微小的氧化控制，并且能够以高可靠性和高效率的方式将吸收液中的亚硫酸浓度保持在适当的范围内，即使在 在系统的操作条件下发生突然变化。 在用于控制烟道气脱硫中的氧化的方法中，主要基于氧化还原电位的反馈控制过程中的比例灵敏度K的值根据检测到的氧化的区域中的偏差ε增加 还原电位值PN与氧化还原电位相对于亚硫酸浓度的特性变化相对应，低于目标氧化还原电位值SN。

公开(公告)号：US6096279A

公开(公告)日：2000-08-01

申请号：US033894

申请日：1998-03-03

申请人： Koichiro Iwashita ,  Kazuaki Kimura ,  Toyoshi Nakagawa ,  Naohiko Ukawa ,  Susumu Okino ,  Kiyoshi Okazoe

发明人： Koichiro Iwashita ,  Kazuaki Kimura ,  Toyoshi Nakagawa ,  Naohiko Ukawa ,  Susumu Okino ,  Kiyoshi Okazoe

IPC分类号： B01D53/14 ,  B01D53/50

CPC分类号： B01D53/508 ,  B01D53/1481

摘要： Flue gas is treated for the presence of SO.sub.3, without resorting to ammonia injection, by adding a powder into the flue gas and subsequently bringing the flue gas into gas-liquid contact with an absorbing fluid, whereby the SO.sub.2 present in the flue gas is removed by absorption into the absorbing fluid. The treatment process may also include introducing the flue gas into a dust collector, whereby dust, including the powder present in the flue gas, is collected, and/or recovering heat from the flue gas by means of a heat exchanger, whereby the flue gas is cooled. A system for treating flue gas is also provided.

摘要翻译： 对烟气进行处理，不用借助氨注入，通过向烟道气中加入粉末，随后使烟道气与吸收液体气液接触，由此除去烟道气中存在的SO2 通过吸收到吸收液中。 处理过程还可以包括将烟道气引入集尘器，由此收集包括烟道气中存在的粉末的粉尘，和/或通过热交换器从烟道气中回收热量，从而烟道气 被冷却。 还提供了一种处理烟气的系统。

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

IPC分类号： B01D53/18 ,  B01D53/50 ,  B01D53/80 ,  B01J19/26 ,  B05B1/20 ,  B01D47/06

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。

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。

公开(公告)号：US06517792B2

公开(公告)日：2003-02-11

申请号：US09924378

申请日：2001-08-08

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： B01D5334

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.

公开(公告)号：US5221298A

公开(公告)日：1993-06-22

申请号：US827216

申请日：1992-01-30

申请人： Eiji Ochi ,  Kiyoshi Okazoe ,  Naohiko Ukawa ,  Susumu Okino ,  Masakazu Onizuka

发明人： Eiji Ochi ,  Kiyoshi Okazoe ,  Naohiko Ukawa ,  Susumu Okino ,  Masakazu Onizuka

IPC分类号： B01D53/50

CPC分类号： B01D53/504 ,  B01D53/501

摘要： A wet exhaust gas desulfurization apparatus includes a housing, an absorbing solution (3, B) stored in the lower portion of the housing, a flue (1, 2, 11, 12, 21, 25) above the surface of the absorbing solution, and a partition plate (4, 15, 25) for dividing the flue into gas inlet and outlet portions. Exhaust gas is introduced as an untreated combustion gas from a space above an absorbing solution (3) divided by a partition plate (4) into the wet exhaust gas desulfurization apparatus, the lower edge (5) of the partition plate is immersed in the solution, pressure of the exhaust gas lowers the upper level (6) of the solution on the upper side of the plate to a level (6') through which the gas passes and flows under the partition plate in contact with the solution leaving the solution on the other side of the plate and then discharges through a space above the absorbing solution on the other side of the partition plate. The plate may be raised and lowered by a rack (4') and pinion ( 4") device, and water jet devices (29) may be used to wash absorbing solution off the surfaces (27, 28) of the plate continuously or intermittently.

公开(公告)号：US06740297B2

公开(公告)日：2004-05-25

申请号：US10294204

申请日：2002-11-14

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： B01J808

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.

公开(公告)号：US5295400A

公开(公告)日：1994-03-22

申请号：US779189

申请日：1991-10-22

申请人： Atsushi Tatani ,  Naohiko Ukawa ,  Susumu Okino ,  Toru Takashina ,  Tsumoru Nakamura ,  Tokuma Arai ,  Yoshihiro Shiraishi

发明人： Atsushi Tatani ,  Naohiko Ukawa ,  Susumu Okino ,  Toru Takashina ,  Tsumoru Nakamura ,  Tokuma Arai ,  Yoshihiro Shiraishi

IPC分类号： G01N1/00 ,  G01N1/10 ,  G01N1/20

CPC分类号： G01N35/1097 ,  G01N1/2035

摘要： A slurry sampling device (3) for sampling a slurry in which solid particles are dispersed has upper and lower blocks (105, 109), and a rotator (102) for collection which is rotatably held between the blocks and has a plurality of through holes (111) each having a volume corresponding to the amount of sample to be collected. The upper and lower blocks are provided with slurry conduits (101, 108) and carrier fluid conduits (107, 110) which can be communicated with the through holes so that slurry and carrier fluid can flow therethrough. Arc-shaped long grooves (113, 114) are provided on portions of the upper and lower blocks where ends of the slurry conduits (101, 108) come into contact with, or are adjacent to, the rotator, so that at least one of the through holes is thereby constantly in contact with the long grooves. In the method for sampling slurry a part of the slurry is pumped (2) from a slurry tank (1) and returned (4) to the slurry tank, and that part of the slurry is sampled intermittently by the sampling device (3) and sent to an analyzer (6) for analysis of the composition of the slurry.

摘要翻译： 用于对其中分散有固体颗粒的浆料进行取样的浆料取样装置（3）具有上下块（105,109）和用于收集的旋转体（102），其被可旋转地保持在块之间并具有多个通孔 （111），每个具有对应于要收集的样品量的体积。 上部和下部块设置有可与通孔连通的浆液管道（101,108）和载体流体管道（107,110），使得浆料和载体流体可以流过其中。 在上部和下部块的部分上设置有弧形的长槽（113,114），其中浆料管道（101,108）的端部与旋转体接触或相邻，使得至少一个 因此通孔与长槽不断地接触。 在采样浆料的方法中，将一部分浆料从浆料罐（1）泵送（2）并返回（4）到浆料罐中，并且该部分浆料被取样装置（3）间歇地取样， 送到分析仪（6），分析浆料的组成。

公开(公告)号：US5266286A

公开(公告)日：1993-11-30

申请号：US895546

申请日：1992-06-08

申请人： Naohiko Ukawa ,  Susumu Okino ,  Kenji Inoue ,  Toshiaki Kinomoto ,  Taku Shimizu

发明人： Naohiko Ukawa ,  Susumu Okino ,  Kenji Inoue ,  Toshiaki Kinomoto ,  Taku Shimizu

IPC分类号： B01D53/50 ,  B01D53/60 ,  B01D53/68 ,  B01D53/70 ,  B01D53/73 ,  B01D53/77 ,  C01B17/00 ,  C01B17/22

CPC分类号： B01D53/501 ,  B01D53/73

摘要： A flue gas desulfurization process for treating flue gases containing SO.sub.2, NO.sub.x, and halogen gases by the wet lime method, in which part of the absorbent liquid is extracted, freed from iodine, and recycled as makeup water to the absorption column.

公开(公告)号：US5192518A

公开(公告)日：1993-03-09

申请号：US701652

申请日：1991-05-16

申请人： Naohiko Ukawa ,  Susumu Okino ,  Toru Takashina ,  Masakazu Onizuka ,  Kenji Inoue

发明人： Naohiko Ukawa ,  Susumu Okino ,  Toru Takashina ,  Masakazu Onizuka ,  Kenji Inoue

IPC分类号： B01D47/00 ,  B01D53/50 ,  B01D53/77 ,  B03C1/00 ,  C01F11/46

CPC分类号： C01F11/464 ,  B01D53/501

摘要： For the purposes of solving a problem due to a fly ash and HF in an exhaust gas, maintaining the activity of calcium carbonate as an absorbent, and recovering a high-purity gypsum, there is here provided a method for desulfurizing an exhaust smoke which comprises the steps of leading the exhaust gas containing the fly ash to a gas absorbing step, removing SO.sub.2 and the fly ash from the exhaust gas by the use of an absorbing solution slurry containing calcium carbonate as an absorbent in the gas absorbing step, and blowing air into the absorbing solution slurry circulating through the gas absorbing step to oxidize it and to thereby produce the gypsum, the aforesaid method being characterized by drawing a portion of the absorbing solution slurry therefrom, leading it to a magnetic field to separate and recover the fly ash from the absorbing solution slurry, and then returning, to the gas absorbing step, a portion or all of the absorbing solution slurry from which the fly ash has been separated.