VERFAHREN UND VORRICHTUNG ZUM ENTIONISIEREN VON K HLMEDIEN F R BRENNSTOFFZELLEN
    11.
    发明授权
    VERFAHREN UND VORRICHTUNG ZUM ENTIONISIEREN VON K HLMEDIEN F R BRENNSTOFFZELLEN 有权
    方法和设备去离子ķHLMEDIEN由于F R燃料电池

    公开(公告)号:EP1468464B1

    公开(公告)日:2006-08-16

    申请号:EP03702447.8

    申请日:2003-01-15

    IPC分类号: H01M8/04

    CPC分类号: H01M8/04029

    摘要: The invention relates to a method and device for deionizing a cooling medium of a fuel cell that circulates inside a cooling circuit. The invention is characterized in that a liquid deionizing agent is permitted to act, at least intermittently, upon the cooling medium whereby enabling the deionizing agent to absorb ions from the cooling medium. To this end, the inventive fuel cell aggregate (10), which comprises at least one fuel cell (11) and at least one cooling circuit (20) for the fuel cell, has, inside the cooling circuit (20), at least one deionization device (23), inside of which a liquid deionizing agent can act upon the cooling medium. The deionization device can comprise static mixers (28, 34) downstream from which membrane separators (29, 35) are connected.

    VERFAHREN ZUR HERSTELLUNG VON NATRIUMDITHIONIT
    18.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON NATRIUMDITHIONIT 审中-公开
    用于生产钠

    公开(公告)号:EP1809574A2

    公开(公告)日:2007-07-25

    申请号:EP05805323.2

    申请日:2005-11-03

    IPC分类号: C01B17/66

    CPC分类号: C01B17/66

    摘要: The invention relates to a method for producing sodium dithionite comprising the steps (a) production of a synthesis batch consisting of sodium formate, sulphur dioxide and an alkaline sodium compound in an aqueous methanol solvent, which forms a sodium dithionite mother liquor, (b) separation of the sodium dithionite from the sodium dithionite mother liquor, leaving a residual mother liquor, (c) separation of methanol from the residual mother liquor, (d) separation of the residual mother liquor into a first sub-stream that is rich in thiosulphate and a second sub-stream that is devoid of thiosulphate, but contains formate by means of a nanofiltration, (e) concentration of sodium formate in the second sub-stream and (f) return of the concentrated second sub-stream to step (a).