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    Combustion exhaust gas treatment system
    4.
    发明授权
    Combustion exhaust gas treatment system 失效
    燃烧废气处理系统

    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

    IPC分类号： B01D53/46 ,  B01D53/50 ,  F23J15/00 ,  F23J15/02 ,  B01D50/00

    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。

    Solid-liquid separator and wet flue gas desulfurization apparatus
    5.
    发明授权
    Solid-liquid separator and wet flue gas desulfurization apparatus 失效
    固液分离器和湿式烟气脱硫装置

    公开(公告)号：US5662794A

    公开(公告)日：1997-09-02

    申请号：US518500

    申请日：1995-08-23

    申请人： Kiyoshi Okazoe ,  Atsushi Tatani ,  Taku Shimizu ,  Naohiko Ukawa

    发明人： Kiyoshi Okazoe ,  Atsushi Tatani ,  Taku Shimizu ,  Naohiko Ukawa

    IPC分类号： B01D33/04 ,  B01D53/50 ,  B01D53/77 ,  C01F11/46 ,  C04B11/26 ,  B01D53/34

    CPC分类号： B01D53/504 ,  C01F11/464 ,  C04B11/264

    摘要： A solid-liquid separator comprising a first roller disposed on one side of a tank containing a slurry subjected to solid-liquid separation at such a height that the lower part thereof is immersed in the slurry, and driven rotationally in a direction which enables the slurry attached to its surface to be lifted up and discharged to the outside of the tank; and a second roller disposed above the first roller facing the first roller so that the second roller comes into pressure contact with the slurry attached to the first roller and lifted up so as to remove the liquid from the slurry; as well as a wet flue gas desulfurization apparatus using this solid-liquid separator.

    摘要翻译： 一种固液分离器，其特征在于，包括：第一辊，该第一辊设置在容纳固液分离的浆料的一侧，其高度使其下部浸入浆料中，并沿着使浆料 附着在其表面上以提升并排放到罐的外部; 以及第二辊，其设置在面向所述第一辊的所述第一辊上方，使得所述第二辊与附接到所述第一辊的所述浆料压力接触并提升，以从所述浆料中除去所述液体; 以及使用该固液分离器的湿式烟道气脱硫装置。

    Method for treating waste gas to separate and recover gypsum and dust therein
    8.
    发明授权
    Method for treating waste gas to separate and recover gypsum and dust therein 失效
    处理废气以分离和回收其中的石膏和粉尘的方法

    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。

    Exhaust gas treating method
    10.
    发明授权
    Exhaust gas treating method 失效
    废气处理方法

    公开(公告)号：US5034028A

    公开(公告)日：1991-07-23

    申请号：US445399

    申请日：1989-12-04

    申请人： Naohiko Ukawa ,  Susumu Okino ,  Taku Shimizu ,  Kouichiro Iwashita

    发明人： Naohiko Ukawa ,  Susumu Okino ,  Taku Shimizu ,  Kouichiro Iwashita

    IPC分类号： B01D53/34 ,  B01D53/50 ,  B01D53/68 ,  B01D53/77

    CPC分类号： B01D53/68 ,  B01D53/501

    摘要： A method of treating an exhaust gas containing SO.sub.2 and HF which is characterized by using an absorbing liquid containing CaCO.sub.3 and Ca(OH).sub.2 as absorbents to be fed to an absorption tower for the exhaust gas, circulating the absorbing liquid from a second slurry tank to the absorption tower, from the absorption tower to a first slurry tank, and from the first flurry tank to the second slurry tank, introducing Ca(OH).sub.2 into the second slurry tank to keep the pH value of the absorbing liquid in the second slurry tank in the range of 5.5-7.0, and blowing air into the absorbing liquid in the first slurry tank.