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    • 4. 发明公开
    • Vapor relief screen basket cleaning brush and method
    • Dampfablassfilter-Korbreinigungsbürsteund Verfahren
    • EP2684997A1
    • 2014-01-15
    • EP13174482.3
    • 2013-07-01
    • Andritz, Inc.
    • Hunt, Tyson BradfordGrogan, Richard M.
    • D21C11/06
    • B08B1/002A46B13/001A46B2200/3006A46B2200/3073B01D29/6415B01D29/6423B01D29/643B01D46/04D21C11/06
    • A brush (50) for dislodging impurities on steam relief screen basket (10) within an operating vessel (6) including at least one brush (50) that includes an elongated support column (15) with a brush (50) attached to a first end (2) of the elongated support column (15) extends out of a seal (7) located on a removable vessel cover (21) of the vessel (6). The steps using the brush (50) to dislodge impurities on steam relief screen basket (10) include locating the brush (50) comprised of a plurality of bristles (1) adjacent to the steam relief screen basket (10), contacting the brush (50) with the screen basket (10), extending the elongated support column (15) through the seal (7), closing the removable vessel cover (21) of the vessel (6) to avoid pressure drop inside the vessel (6), and moving the brush (50) from a first location on the screen basket (10) to a second location on the screen basket (10) to dislodge impurities attached to the screen basket (10).
    • 一种刷子(50),用于移除工作容器(6)内的蒸汽排放筛网(10)上的杂质,包括至少一个刷子(50),该刷子包括细长的支撑柱(15),刷子(50)附接到第一 细长支撑柱(15)的端部(2)从位于容器(6)的可移除的容器盖(21)上的密封件(7)延伸出来。 使用刷子(50)去除蒸汽排泄筛网(10)上的杂质的步骤包括将由多个刷毛(1)组成的刷子(50)定位成与蒸汽排泄筛网(10)相邻,与刷子 (6)的可移除的容器盖(21),以避免容器(6)内的压力下降。 以及将所述刷子(50)从所述筛网(10)上的第一位置移动到所述筛篮(10)上的第二位置,以移除附着到所述筛篮(10)上的杂质。
    • 10. 发明公开
    • METHOD FOR REPROCESSING AN OZONE-CONTAINING GAS PRESENT IN A PULP BLEACHING PLANT
    • 法治疗臭氧AGAIN含气厂纸浆漂白剂
    • EP0843757A1
    • 1998-05-27
    • EP96927319.0
    • 1996-08-06
    • BELOIT TECHNOLOGIES, INC.
    • ROUNSAVILLE, JeffreyMINAMI, Shusuke
    • B01D53D21C9D21C11
    • D21C11/06D21C9/153
    • A method for reprocessing an ozone-containing gas present in a pulp bleaching plant comprising the steps of supplying the ozone-containing gas to a scrubber and reducing the ozone concentration of the gas as the gas flows through the scrubber. The step of reducing comprises the steps of supplying an alkaline medium to the scrubber and flowing the ozone-containing gas in countercurrent relationship with the alkaline medium within the scrubber so as to provide intimate contact between the ozone-containing gas and the alkaline medium, thereby converting the ozone-containing gas into a substantially ozone-free gas. The alkaline medium may comprise one of the following: a sodium hydroxide solution; white liquor; post oxygen stage filtrate; weak black liquor; or filtrate from an Eo stage of the pulp bleaching plant. The method further comprises the step of separately discharging the ozone-containing gas and the alkaline medium from the scrubber. The ozone-containing gas may comprise an off-gas, which has been partially reacted with a pulp within a pulp bleaching stage or alternatively may comprise fresh bleaching gas, having an ozone concentration ranging from about 6 % to about 14 % by weight within a carrier gas, with the fresh bleaching gas being supplied directly from an ozone generator to the scrubber.