公开(公告)号：US4038367A

公开(公告)日：1977-07-26

申请号：US579055

申请日：1975-05-20

申请人： Masumi Atsukawa ,  Naoyuki Takahashi ,  Naoharu Shinoda ,  Naohiko Ukawa

发明人： Masumi Atsukawa ,  Naoyuki Takahashi ,  Naoharu Shinoda ,  Naohiko Ukawa

IPC分类号： B01D53/60 ,  B01D53/77 ,  C01B21/50 ,  C01F11/46 ,  C01B21/00

CPC分类号： B01D53/60

摘要： Nitrogen oxides and sulfur oxides are removed from exhaust gases in a two step process including a slurry removal of the sulfur oxides followed by washing the gases with an aqueous solution of an alkali metal iodide and/or an alkaline earth metal iodide.

公开(公告)号：US4038368A

公开(公告)日：1977-07-26

申请号：US579051

申请日：1975-05-20

申请人： Masumi Atsukawa ,  Naoharu Shinoda ,  Naohiko Ukawa

发明人： Masumi Atsukawa ,  Naoharu Shinoda ,  Naohiko Ukawa

IPC分类号： B01D53/34 ,  B01D53/60 ,  B01D53/77 ,  C01F5/40 ,  C01B21/00

CPC分类号： B01D53/60 ,  B01D53/34

摘要： A process for wet-treating an exhaust gas to remove oxides of sulfur and of nitrogen including:1. washing the exhaust gas with a slurry containing one or more magnesium compounds to remove oxides of sulfur from the exhaust gas;2. washing the exhaust gas treated in step (1) with an aqueous solution of an alkali metal iodide and/or an alkaline earth metal iodide to remove the oxide of nitrogen; and3. contacting the slurry from step (1) with the aqueous solution from step (2) to regenerate the solution of alkali metal iodide and/or alkaline earth metal iodide and to decompose any nitrite formed in step (2) to nitrogen.

公开(公告)号：US4302431A

公开(公告)日：1981-11-24

申请号：US151814

申请日：1980-05-21

申请人： Masumi Atsukawa ,  Kazuhiro Matsumoto ,  Toru Seto ,  Toshikuni Sera ,  Naohiko Ukawa

发明人： Masumi Atsukawa ,  Kazuhiro Matsumoto ,  Toru Seto ,  Toshikuni Sera ,  Naohiko Ukawa

IPC分类号： B01D53/94 ,  B01D53/86 ,  F23J15/00 ,  B01D53/36

CPC分类号： B01D53/8631 ,  B01D53/8625

摘要： In a process and an apparatus for controlling oxides of nitrogen in exhaust gases from combustion equipment by decomposing the oxides, in the presence of oxygen, with ammonia blown into the equipment and associated ducting at temperatures within the range from 700.degree. to 1300.degree. C., a catalyst assembly is arranged, with the catalytic surfaces of the component units substantially in parallel to the direction of exhaust gas flow, in a region where the temperature of the gas after the decomposing treatment is between 300.degree. and 500.degree. C., and the gas after the decomposing treatment is caused to pass through the catalyst assembly to decompose residual nitrogen oxides and ammonia in the gas to innocuous substances. An additional supply of ammonia, in an amount from 0.5 to 1.5 times equivalent (in molar ratio) to the amount of nitrogen oxides in moles in the gas is introduced into the space immediately upstream of the catalyst assembly, thereby to accelerate the decomposition of the oxides in the gas to make it harmless.

摘要翻译： 在用于通过在氧气存在下将氧化物分解成燃烧设备的废气中的氮氧化物的方法和装置，并且在700至1300℃的温度范围内控制相关的管道。 在分解处理后的气体温度在300〜500℃之间的区域内，配置有催化剂组件，其中组分单元的催化剂表面基本上与废气流动方向平行，并且 使分解处理后的气体通过催化剂组件，将气体中的残留氮氧化物和氨分解成无害物质。 在催化剂组件的紧挨着上游的空间内，引入相当于气体中的氮氧化物的摩尔比为0.5〜1.5倍（以摩尔比计）的氨的额外供给，从而加速了 气体中的氧化物使其无害化。

公开(公告)号：US4632810A

公开(公告)日：1986-12-30

申请号：US706117

申请日：1985-02-27

申请人： Naoharu Shinoda ,  Atsushi Tatani ,  Naohiko Ukawa ,  Masakazu Onizuka ,  Taku Shimizu

发明人： Naoharu Shinoda ,  Atsushi Tatani ,  Naohiko Ukawa ,  Masakazu Onizuka ,  Taku Shimizu

IPC分类号： B01D53/50 ,  B01D53/77 ,  C01F11/46 ,  C01B17/00

CPC分类号： C01F11/464 ,  B01D53/501

摘要： The present invention is directed to a method for treating a waste gas to separate and recover gypsum and a dust therein, characterized by comprising the steps of causing the waste gas to pass through a dry dust collector; introducing the gas into a gas absorber, in which a slurry containing at least one of calcium hydroxide or calcium carbonate as an absorbent is employed to remove SO.sub.2 and the dust passed through the dry dust collector from the waste gas; blowing air into the resultant absorbing liquid in the gas absorber to oxidize the absorbing liquid and to thereby produce gypsum; delivering them to an absorbing liquid tank, in which the slurry mainly containing the gypsum grains is separated from the other slurry mainly containing the dust by partition walls disposed therein; and directly taking out the respective slurries separately from the absorbing liquid tank.

摘要翻译： 本发明涉及一种处理废气以分离和回收石膏和其中的灰尘的方法，其特征在于包括使废气通过干式除尘器的步骤; 将气体引入气体吸收器中，其中使用含有氢氧化钙或碳酸钙中的至少一种作为吸收剂的浆料来从废气中除去SO 2和通过干式集尘器的粉尘; 将空气吹送到吸收剂中的所得吸收液体中以氧化吸收液体，从而产生石膏; 将其输送到吸收液体罐中，其中主要含有石膏颗粒的浆料与主要由灰尘组成的其它浆料与设置在其中的分隔壁分离; 并直接从吸收液体罐中取出各自的浆料。

公开(公告)号：US4420465A

公开(公告)日：1983-12-13

申请号：US390835

申请日：1982-06-22

申请人： Naoharu Shinoda ,  Atsushi Tatani ,  Naohiko Ukawa ,  Michio Oshima ,  Susumu Okino ,  Sadaichi Shigeta

发明人： Naoharu Shinoda ,  Atsushi Tatani ,  Naohiko Ukawa ,  Michio Oshima ,  Susumu Okino ,  Sadaichi Shigeta

IPC分类号： B01D53/50 ,  B01D53/77 ,  C01F11/46 ,  C01B17/00

CPC分类号： C01F11/464 ,  B01D53/501

摘要： A process for desulfurizing an exhaust gas which comprises desulfurizing an exhaust gas containing SO.sub.2 by bringing it into contact with a slurry containing calcium compounds and aluminum compounds, characterized in that the concentration of the dissolved aluminum ion in said slurry is detected and a manganese compound is supplied into said slurry in such a manner that the ratio of the concentration of manganese (including both solid and liquid) to said concentration of the dissolved aluminum ion may be maintained in a molar ratio of less than 1 in said slurry.

摘要翻译： 一种废气脱硫方法，其特征在于，将含有二氧化硫的废气与含有钙化合物和铝化合物的浆料接触，其特征在于检测所述浆料中溶解的铝离子的浓度，锰化合物为 供给到所述浆料中，使得所述浆料中锰（包括固体和液体两者）的浓度与所述溶解的铝离子的浓度之比可保持小于1的摩尔比。

公开(公告)号：US4533531A

公开(公告)日：1985-08-06

申请号：US606137

申请日：1984-05-02

申请人： Naoharu Shinoda ,  Atsushi Tatani ,  Naohiko Ukawa ,  Susumu Okino

发明人： Naoharu Shinoda ,  Atsushi Tatani ,  Naohiko Ukawa ,  Susumu Okino

IPC分类号： B01D53/50 ,  B01D53/34

CPC分类号： B01D53/501

摘要： An exhaust fume desulfurization process is disclosed which comprises the steps of contacting an off-gas containing SO.sub.2 with a slurry containing calcium and manganese compounds, introducing a gas containing oxygen into the slurry, detecting the amount of the absorption of oxygen by the slurry, and regulating the amount of manganese present in the slurry based upon the amount of oxygen absorbed by the slurry. The desulfurization rate is correspondingly adjusted and the desulfurized gas product is recovered.

摘要翻译： 公开了一种排气烟气脱硫方法，其包括使含有SO 2的废气与含有钙和锰化合物的浆料接触，将含氧气体引入浆料中，检测浆料中氧吸收量的步骤，以及 基于浆料吸收的氧的量来调节浆料中存在的锰的量。 相应调整脱硫率，回收脱硫气产品。

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。

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：US5756052A

公开(公告)日：1998-05-26

申请号：US769633

申请日：1996-12-18

申请人： Hiroshi Suzumura ,  Yasuyuki Ogushi ,  Naohiko Ukawa ,  Masao Hino ,  Koosoo Tao ,  Nobuo Kojima ,  Kiyoshi Okazoe ,  Kyozo Suyama

发明人： Hiroshi Suzumura ,  Yasuyuki Ogushi ,  Naohiko Ukawa ,  Masao Hino ,  Koosoo Tao ,  Nobuo Kojima ,  Kiyoshi Okazoe ,  Kyozo Suyama

IPC分类号： B01D53/34 ,  B01D53/50 ,  B01D53/64 ,  B01D53/77 ,  B01D50/00

CPC分类号： B01D53/64 ,  B01D53/501

摘要： A flue gas treatment system is provided for which is capable of easily treating Se contained in flue gas, comprising an extractor 13 for extracting soluble components in the dust removed by a dry-type dust precipitator 5 into water to slurry the dust; insolubilizer supply 16 for supplying an insolubilizer for insolubilizing at least tetravalent Se to the dust slurry which has been slurried from the dust by the extractor 13; adsorbent supply 14 for supplying an adsorbent composed of an organism material for adsorbing at least hexavalent Se in the dust slurry; and separator 15 for solid-liquid separating the dust slurry to which the insolubilizer and the adsorbent have been supplied by said supplies.

摘要翻译： 提供一种能够容易地处理烟气中所含的Se的烟道气处理系统，包括：将由干式除尘器5除去的粉尘中的可溶性成分提取到水中以将粉尘淤浆的提取器13; 用于供给用于使至少四价硒不溶解到由提取器13从灰尘中排出的粉尘浆料的不溶物供给装置16; 用于供给由用于吸附至少六价铬的生物材料组成的吸附剂的吸附剂供给装置14; 以及分离器15，用于固体分离由所述供给物供应的不溶化物和吸附剂的粉尘浆料。

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.