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    6.
    发明专利
    未知

    公开(公告)号：IT1185834B

    公开(公告)日：1987-11-18

    申请号：IT6794485

    申请日：1985-11-08

    Applicant: TAMPELLA OY AB

    Inventor： HAMALA SIRPA ,  KENAKKALA TIMO ,  JANKA PENTTI ,  RUOHOLA TUOMO ,  LEHTIMAKI MARTTI

    IPC: B01D53/14 ,  B01D53/50 ,  B01D53/75 ,  B01D53/81 ,  C01B17/60 ,  C01F11/46 ,  C01F11/48 ,  B01D

    Abstract: The invention relates to a process and apparatus for causing the sulfur dioxide of flue gases to react to form solid sulfates and sulfites which can be separated from the flue gases. Sulfur dioxide containing flue gases (16) are directed according to the invention into one end of an oblong reaction zone (4), in addition to which pulverous calcium compounds and water are directed separately into the reaction zone at several points, and finally from the opposite end a flue gas suspension is withdrawn and directed to dust separation (5). By feeding the pulverous reagent and the water separately into the reactor 4, the problems involved in the preparing, handling and spraying of an aqueous slurry are avoided, in addition to which the retention time and the reaction conditions can be regulated easily in the oblong reactor 4.

    A process for removing gaseous sulphur compounds, particularly sulphur dioxide, from the flue gases of a furnace
    7.
    发明专利
    A process for removing gaseous sulphur compounds, particularly sulphur dioxide, from the flue gases of a furnace 未知

    公开(公告)号：GB2174082A

    公开(公告)日：1986-10-29

    申请号：GB8527455

    申请日：1985-11-07

    Applicant: TAMPELLA OY AB

    Inventor： HAMALA SIRPA

    IPC: B01D53/14 ,  B01D53/50 ,  B01D53/81 ,  F23J15/00 ,  B01D53/34

    Abstract: In addition to a sulphur-containing material (4) to be burned and an oxygen-containing gas (5), a pulverous calcium or magnesium hydroxide (6) is fed, in excess proportion to the sulphur dioxide gas produced into the combustion chamber of the furnace (1), and water (9) or steam is sprayed separately into the flue gases (8) containing calcium oxide or magnesium oxide either in the furnace or into the flue gases leaving the furnace. Alternatively and preferably, the pulverous hydroxide (6') can be fed directly into the flue gases leaving the furnace (1), either in a flue gas conduit (7) or in a reactor (2) downstream of it, where the hydroxide is activated by means of water (9) or steam.

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