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1. WO2020136930 - APPARATUS FOR REMOVING HARMFUL SUBSTANCES FROM EXHAUST GAS

Publication Number WO/2020/136930
Publication Date 02.07.2020
International Application No. PCT/JP2019/016910
International Filing Date 21.04.2019
IPC
B01D 53/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
14by absorption
18Absorbing units; Liquid distributors therefor
B01D 53/50 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
50Sulfur oxides
B01D 53/78 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
77Liquid phase processes
78with gas-liquid contact
CPC
B01D 53/18
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
14by absorption
18Absorbing units; Liquid distributors therefor
B01D 53/50
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
50Sulfur oxides
B01D 53/78
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
77Liquid phase processes
78with gas-liquid contact
Applicants
  • ACA株式会社 ACA CO.,LTD. [JP]/[JP]
Inventors
  • 谷川 茂利 TANIGAWA Shigetoshi
Agents
  • 久留 徹 KURU Toru
Priority Data
2018-24652728.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) APPARATUS FOR REMOVING HARMFUL SUBSTANCES FROM EXHAUST GAS
(FR) APPAREIL POUR ÉLIMINER DES SUBSTANCES NOCIVES DE GAZ D'ÉCHAPPEMENT
(JA) 排ガスの有害物質除去装置
Abstract
(EN)
[Problem] To provide an apparatus for removing harmful substances such as sulfur oxides contained in exhaust gas without using a neutralizing agent such as lime water in large amounts. [Solution] In a first tank 2 which contains exhaust gas, the exhaust gas is cooled to within a range of 0-40 °C by spraying, from a first spraying device 3, a coolant on which water or sulfur dioxide is adsorbed. In addition, the cooled exhaust gas is supplied to a second tank 6 through a conduit 5, thereby spraying mist-like water from a second spraying device 7. Accordingly, the solubility of sulfur dioxide is improved, and harmful substances can be removed by dissolving/adsorbing the sulfur dioxide in water. Also, an aqueous solution in which the sulfur dioxide is dissolved is heated in a third tank 8, thereby separating the sulfur dioxide.
(FR)
Le problème décrit par la présente invention est de fournir un appareil pour éliminer des substances nocives telles que des oxydes de soufre contenus dans des gaz d'échappement sans utiliser un agent neutralisant tel que de l'eau de chaux en grandes quantités. [Solution] dans un premier réservoir 2 qui contient un gaz d'échappement, le gaz d'échappement est refroidi à l'intérieur d'une plage de 0 à 40 °C par pulvérisation, à partir d'un premier dispositif de pulvérisation 3, d'un fluide de refroidissement sur lequel de l'eau ou du dioxyde de soufre est adsorbé. De plus, le gaz d'échappement refroidi est fourni à un second réservoir par l'intermédiaire d'un conduit 5, ce qui pulvérise de l'eau de type brume à partir d'un second dispositif de pulvérisation 7. Par conséquent, la solubilité du dioxyde de soufre est améliorée, et les substances nocives peuvent être éliminées par dissolution/adsorption du dioxyde de soufre dans l'eau. En outre, une solution aqueuse dans laquelle le dioxyde de soufre est dissous est chauffée dans un troisième réservoir 8, ce qui permet de séparer le dioxyde de soufre.
(JA)
【課題】石灰水などの中和剤を大量に用いることなく、排ガスに含まれる硫黄酸化物などの有害物質を除去することができるようにした有害物質除去装置を提供する。 【解決手段】排ガスを入れる第一タンク2内で、第一噴霧装置3から水や二酸化硫黄を吸着させた冷却剤を噴霧して排ガスを0℃から40℃の範囲内に冷却させる。そして、その冷却された排ガスを導通管5を介して第二タンク6に供給し、そこで、第二噴霧装置7から霧状の水を噴霧させる。これによって、二酸化硫黄の溶解度を向上させ、水に二酸化硫黄を溶解・吸着させて有害物質を除去できるようにする。そして、第三タンク8でその二酸化硫黄を溶解させた水溶液を加熱して二酸化硫黄を分離させるようにする。
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