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    • 2. 发明授权
    • Flat-face valve for pulp rotary drum vacuum washer filter and method
    • 用于纸浆旋转鼓真空吸尘器过滤器的平面阀和方法
    • US09551430B2
    • 2017-01-24
    • US14428042
    • 2013-10-01
    • Andritz Inc.
    • Todd Grace
    • F16K24/04B01D33/74B01D33/48B01D33/06B01D36/00B01D33/09B01D33/00D21C9/06
    • B01D36/001B01D33/0009B01D33/06B01D33/09B01D33/48B01D33/74D21C9/06F16K24/04
    • A rotary drum for thickening pulp from a slurry, the drum including drainage channels delivering filtrate from a pulp mat on an outer surface of the rotary drum to at least one filtrate chamber at an end of the rotary drum, a flat face valve and plenum chamber assembly in the filtrate chamber. The flat face valve juxtaposed against drainage outlets of the drainage channels, wherein the flat face valve does not block the drainage outlets during a majority of the rotation of the rotary drum. At least one opening on the flat face valve extending through the front surface and aligned with the drainage outlets to provide a fluid passage through the flat face valve and to a plenum chamber behind the flat face valve such that air in the filtrate is collected in the upper portion of the plenum chamber and removed from the rotary drum.
    • 一种用于从浆料中增稠纸浆的旋转鼓,所述滚筒包括排出通道,其将滤液从所述旋转鼓的外表面上的纸浆垫输送到所述旋转鼓的端部处的至少一个滤液室,平面阀和增压室 装在滤液室中。 平面阀与排水通道的排水口并置,其中平面阀在旋转滚筒的大部分旋转期间不阻塞排出口。 平面阀上的至少一个开口延伸穿过前表面并与排水口对准,以提供通过平面阀的流体通道和平面阀后面的增压室,使得滤液中的空气被收集在 增压室的上部并从旋转鼓中取出。
    • 5. 发明授权
    • Method for recovering crystals from slurry
    • 从浆液中回收水晶的方法
    • US5093001A
    • 1992-03-03
    • US457773
    • 1990-01-18
    • Masanori Ueda
    • Masanori Ueda
    • B01D33/06B01D9/02B01D24/46B01D33/073B01D33/09B01D33/44B01D33/58B01D37/00C07B63/00C07C51/43C07C63/26
    • B01D33/09B01D33/073B01D37/00C07C51/47B01D2201/282
    • A method for recovering crystals from a slurry by supplying the slurry to a rotary sucking filter while rotating a cylindrical filter medium thereof to effect a sequence of operations of sucking filtration, washing and further sucking filtration, which method comprises conducting a sucking filtration while pressurizing the slurry side so as to maintain such a temperature and pressure that the filtrate of the rotary sucking filter will not reach a condition of supersaturation, whereby stuffing of the filter medium due to deposition of crystals from the mother liquor with increase in the slurry viscosity is prevented and the recovery of the crystals are realized efficiently over a long period of time. This method is suitable for recovering crude and purified crystals of terephthalic acid and can be applied also for the recovery of general crystilline products, such as hydroquinone, resorcin and so on from slurries of them.
    • PCT No.PCT / JP89 / 00529 Sec。 371 1990年1月18日第 102(e)1990年1月18日日期PCT提交1989年5月29日PCT公布。 第WO89 / 11323号公报 日本特开1989年11月30日。一种从浆料中回收晶体的方法,该方法是在将圆筒形过滤介质旋转一边旋转吸附过滤器的同时进行抽吸,洗涤,进一步抽吸的操作, 在对浆料侧进行加压的同时进行抽吸过滤,以保持旋转式吸滤器的滤液不会达到过饱和状态的温度和压力,由此由于从母液中沉积晶体而填充过滤介质, 防止了浆料粘度的增加,并且长时间有效地实现了晶体的回收。 该方法适用于回收粗制和纯化的对苯二甲酸的晶体,也可用于从它们的浆料中回收一般的石油产品,如氢醌,间苯二酚等。