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    • 4. 发明申请
    • SOOT WATER CLEANING BY MEANS OF CONTINUOUS PRESSURE FILTRATION
    • RUSS净水器连续压滤
    • WO2012076305A2
    • 2012-06-14
    • PCT/EP2011070239
    • 2011-11-16
    • SIEMENS AGMEHLHOSE FRIEDEMANNTAFFELT PETERHANNEMANN FRANKFISCHER NORBERTPUTZ MIRKO
    • MEHLHOSE FRIEDEMANNTAFFELT PETERHANNEMANN FRANKFISCHER NORBERTPUTZ MIRKO
    • B01D29/52B01D35/16C10J3/485C10J3/78C10J3/84C10J2300/169Y02E20/18
    • In a pressure filtration system for cleaning residual quenching water of a gasifying device that gasifies carbon-containing fuels under elevated pressure, the soot water from the quencher is passed to a filter system (1), which has a number of pressure filter chambers operating alternately in filtering mode under gasifying pressure or in cleaning mode. The filtrate from the pressure filter chambers is passed to a quenching water reservoir, from which the quencher is fed with quenching water. This only entails small temperature and pressure losses with respect to the residual quenching water leaving, and only a small additional amount of energy has to be expended to overcome the remaining pressure difference to bring the filtrate that is to be returned back to the gasifying pressure. The invention, in which the residual quenching water is therefore cleaned substantially under gasifying pressure in a pressure filter, avoids flash evaporation of the residual quenching water into the vacuum area, with vapour cooling and a subsequent increase in pressure and reheating. In this way, the electrical energy requirement of the gasifying process itself can be reduced by orders of magnitude and the energy content and associated water content of the untreated gas can be set to the steam contents required for the CO shift reaction without additional amounts of heat being used up. This leads altogether to an improvement in the overall efficiency of IGCC and chemical synthesis processes. In an advantageous way, calcite precipitation is avoided in the soot water system, since no flash evaporation and preheating of the residual quenching water to be returned is required.
    • 在对升高的压力下净化Restquenchwasser一个含碳燃料的压力过滤系统气化的气化装置中,从淬灭剂(1)被提供过滤器系统的烟灰水,具有多个交替地在过滤器中的气化压力下操作,或在Abreinigungsbetrieb压力过滤室操作。 从压力过滤室将滤液供给至从该淬灭剂被馈送有骤冷水Quenchwasservorlagebehälter。 在这里,只有很小的温度和压力损失退出Restquenchwasser而且必须花费一些额外的能量来克服目前的压力差,使由于滤液回气化压力。 本发明,其中,所述R​​estquenchwasser因此基本上在压力过滤器净化气化压力下,避免了闪光灯膨胀Restquenchwassers的与蒸汽冷却和随后的加压和再加热的真空区域。 以这种方式,气化过程所需的电性质可以通过幅度和能量含量的顺序来减少和原料气体的有关水含量被调节到所需的无需额外热量消耗的CO变换反应蒸气内容。 这导致IGCC和化学合成过程的整体效率的全面提高。 有利地,方解石沉淀避免在炭黑水系统由于不需要再循环Restquenchwassers的松弛和预热。