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1、1,VACUUM FILTRATION COMPETITON 真空过滤比较,2,VACUUM FILTERS : PROCESS STEPS 真空过滤机：工艺步骤,Cake formation, 滤饼形成 Cake washing ( if required) 滤饼冲洗（可选） Cake drying 滤饼干燥 Cake discharge 滤饼排放,Vacuum filtration 真空过滤,3,Equivalent system with traditionnal pressure filters 传统压滤机系统,NOTA : Filter # means dual filter for
2、 continuous process 注意：每处带滤机都需要双倍的带滤机以满足连续工艺的要求,Vacuum filtration 真空过滤,4,INDUSTRIAL VACUUM FILTERS,Filter 过滤机 Filtrate receivers 滤液接收灌 vacuum pump 真空泵 Filtrate extraction devices 滤液萃取装置 pumps 泵 barometric pot 开口罐 Self extractors tanks 自萃取罐,An under vacuum filtration unit is composed by: 一台真空过滤装置有以下部
3、分组成：,5,INDUSTRIAL VACUUM FILTERS 工业用真空过滤机,6,TYPE OF EQUIPMENT 设备类型,Horizontal belt filter水平带式过滤机 Moving support : Belt 移动支撑：皮带 Rotary vacuum drum filter,真空转鼓式过滤机 Moving support : Drum 移动支撑：转鼓 Rotary vacuum disc filter, 转盘式过滤机 Moving support : Disc 移动支撑：转盘 Table filter 翻盘式过滤机 Moving support : Table 移
4、动支撑：翻盘,7,Horizontal vacuum belt filter 水平真空带式过滤及,8,Horizontal vacuum belt filter 水平真空带式过滤机,Features :特点： Support (belt) horizontally positioned支撑（皮带）水平安装 Adequate piston effect for washing (either co-current or methodic)优化冲洗效果 For settling pulp, optimization of the geometry of the cake优化滤饼的颗粒分布 No p
5、otential cracks in the cake ( washing efficiency 99%)滤饼内部无裂缝（冲洗效率99%） Can treat difficult slurries ( settable, high viscosity, .) 能处理各种有难度的料浆（高粘稠性） No residual volume无残留 Wide range of adjustment for operation ( feed solid content may vary),运行宽度的调节（进料固体的含量会变化） Low maintenance cost ( because of update
6、d engineering) 低维护成本（以为最新的技术） No need of protracted supervision,无须长时间的现场监管 Exceptional utilization rate ( 98%)优异的利用率（98%）,9,Horizontal vacuum belt filter 水平真空带式过滤机,Disadvantages :缺点： space required, 需要的空间 incompatibility with solvents, 和溶剂不相溶 total hooding ( tight enclosed) is difficult for importan
7、t surfaces.对重要表面做整体护罩很困难,10,Rotary vacuum drum filter 转鼓式真空过滤机,11,Rotary vacuum drum filter 转鼓式真空过滤机,Features特点 low space requirement ,所需空间小 possibility to cover filter,可覆盖过滤机 possibility to make a airtight filter, 可以做成密封的过滤机 high availability ( 95%) ,高利用率( 95%) low investment cost , operation cost,
8、 power cost, 低投资，运行成本，能耗成本 process flexibility (NR, TS, NP, RL, RP, String, CA, SP types )工艺的灵活性 may work with solvent or in very corrosive atmosphere (PP)可以与溶剂一起运行， 或可以在强腐蚀性环境运行 may be used as a clarifier (NP type)可以作为澄清器用 good dryness performance ( RP type)优良的干燥效果 worldwide more used vacuum filter
9、 solution. 世界范围内使用较多的真空过滤机类型,12,Rotary vacuum drum filter 转鼓式真空过滤机,Disadvantages :缺点 Washing efficiency,冲洗效果 Cannot be used for high density pulps,不能用在高粘稠度料浆上 Difficulty when fluctuant feed solid content,不能用在固体颗粒含量变化大的料浆上 High transport cost ( cannot be shipped dismantled)高运输成本（无法拆卸后船运）,13,Rotary va
10、cuum disc filter 转盘式真空过滤机,14,Rotary vacuum disc filter 转盘式真空过滤机,Features特点 very large filtration area,非常巨大的过滤空间 simple conception 简单的结构 low exploitation cost 低开发成本,Disadvantage :缺点 No cake washing possibility 不能冲洗滤饼 only use for product easy to filtrate 只能用于过滤容易过滤的产品,15,Table filter 翻盘式过滤机,16,Table
11、filter,Features特点 Very large filtration area ( 250m ) , 非常大的过滤面积 Few moving parts (compared to tilting pan filter) 更少的移动部件（相对于斜盘式过滤机） Engineered for difficult atmosphere ( H3PO4) 专为挥发产品设计 Low operating costs,低运行成本 Higher productivity,高生产率 High availability高利用率 Very long life time非常长的使用寿命,17,Table fi
12、lter 翻盘式过滤机,Disadvantages缺点 High capital cost ,高成本 Only designed for phosphoric acid application 专为磷酸产品设计,18,2 main types of washing process 两种主要的冲洗工艺,Co current washing 正流冲洗,Often used经常使用 Easy to operate易于操作,冲洗水入口,浆料入口,滤出液,冲洗液出口,19,2 main types of washing process,Methodic or counter current washin
13、g逆流冲洗,Used when problem of washing supply 当冲洗水供应量有限时,冲洗水入口,浆料入口,滤出液,冲洗液出口,浆料入口,浊液罐,20,Caracteristics特点,21,Process Competition 工艺比较,Filter press挤压机 Pressure filter (Larox type)压滤机（如LAROX） Belt filter without rubber belt 无橡胶皮带的带式过滤机 Settling (Counter Current Decantation), 沉淀式（逆流沉降槽） Centrifuges离心机 Cyc
14、lone separation漩涡分离 Screening筛分 U-filtrationU型过滤,22,Process Competition 工艺比较,23,PRESSURE FILTER压滤机,It is not working under vacuum. 非真空条件下运行 Its a vertical press filter.垂直式压滤机,24,PRESSURE FILTER 压滤机,Squeezing by air or water 通过空气或者水挤压,Filtration on horizontal plates在水平层面上过滤,Discharging排放 : Releving t
15、he plates Moving the cloth松开夹层移走滤布,Washing or drying冲洗或干燥,25,PRESSURE FILTER 压滤机,Features特点 Very good dryness非常优秀的干燥效果 Minimal foot print占地面积小 No vacuum system required无须真空系统,Disadvantages缺点,Discontinuous filter非连续过滤的过滤机 Less washing efficiency ( Problem of dist.)冲洗效率低 High operating cost高运行成本 Low a
16、vailability低利用率,26,PRESSURE FILTER 压滤机,For your information. 信息,FILTRES PHILIPPE Brochures : 1975 PHILIPPE过滤机样本： 1975,27,BELT FILTER WITHOUT BELT 无皮带的带式过滤机,No rubber belt, the Filtration cloth is directly in contact with trays 无橡胶皮带，滤布直接接触托盘,Trays 托盘,Cake滤饼,28,BELT FILTER WITHOUT BELT 无皮带的带式过滤机,Cycle description 循环描述 Vacuum is on 真空打开的时候 filtration cloth is sealed on trays Filtration is performing Trays are moving forward end of course for trays 滤布密封在托盘上，托盘向前移动到
