COAL-FIRED BOILER EXHAUST GAS TREATMENT APPARATUS AND COAL-FIRED BOILER EXHAUST GAS TREATMENT METHOD
    4.
    发明公开
    COAL-FIRED BOILER EXHAUST GAS TREATMENT APPARATUS AND COAL-FIRED BOILER EXHAUST GAS TREATMENT METHOD 审中-公开
    燃煤锅炉排气处理装置和燃煤锅炉排气处理方法

    公开(公告)号:EP3311905A1

    公开(公告)日:2018-04-25

    申请号:EP16811340.5

    申请日:2016-05-09

    摘要: Provide is an exhaust gas treatment apparatus which includes a denitration device (2), a dust collector (4), and a desulfurization device (5) in order, respectively, in a flow path of exhaust gas discharged from a boiler (1), wherein a heavy-metal component removal device (10) is provided in the exhaust gas flow path between the dust collector (4) and the desulfurization device (5). This device (10) is provided with: an absorption tower (45) including a nozzle (47) which sprays acidic absorption liquid on the exhaust gas, a tank (49) which stores liquid which has absorbed a heavy metal, and a pump (50) which supplies the nozzle (47) with the liquid in the tank (49); a neutralizing tank (52) which neutralizes the liquid drawn from the absorption tower (45); and a separator (53) which separates the neutralized liquid into a solid component and a liquid component. Since a small amount of heavy metal can be removed in the absorption tower (45), re-discharging of the heavy metal by the desulfurization device (5) is prevented.

    摘要翻译: 提供一种废气处理装置,其在从锅炉(1)排出的废气的流路中分别依次具备脱硝装置(2),集尘装置(4)以及脱硫装置(5) 其中在集尘器(4)和脱硫装置(5)之间的废气流动路径中设置有重金属成分去除装置(10)。 该装置(10)具有:吸收塔(45),该吸收塔包括将酸性吸收液喷射到排气上的喷嘴(47);储存吸收了重金属的液体的罐(49);以及泵 50),其向所述喷嘴(47)供给所述罐(49)内的液体; 中和槽(52),其中和从吸收塔(45)吸入的液体; 以及将中和后的液体分离成固体成分和液体成分的分离器(53)。 由于可以在吸收塔(45)中除去少量重金属,所以防止了脱硫装置(5)对重金属的再排放。