水平式真空脫濾機功能對比

1、VACUUM FILTRATIONCOMPETITON 真空過濾比較,VACUUM FILTERS : PROCESS STEPS真空過濾機：工藝步驟,Cake formation, 濾餅形成 Cake washing ( if required) 濾餅沖洗（可選） Cake drying 濾餅干燥 Cake discharge 濾餅排放,Vacuum filtration 真空過濾,Equivalent

2、system with traditionnal pressure filters傳統(tǒng)壓濾機系統(tǒng),NOTA : Filter # means dual filter for continuous process注意：每處帶濾機都需要雙倍的帶濾機以滿足連續(xù)工藝的要求,Vacuum filtration 真空過濾,,INDUSTRIAL VACUUM FILTERS,Filter 過濾機 Filtrate receivers 濾液接收

3、灌 vacuum pump 真空泵 Filtrate extraction devices 濾液萃取裝置 pumps 泵 barometric pot 開口罐 Self extractors tanks 自萃取罐,An under vacuum filtration unit is composed by:一臺真空過濾裝置有以下部分組成：,INDUSTRIAL VACUUM FILTERS工業(yè)用真空過濾機,,TYPE OF

4、 EQUIPMENT 設(shè)備類型,Horizontal belt filter水平帶式過濾機Moving support : Belt 移動支撐：皮帶 Rotary vacuum drum filter,真空轉(zhuǎn)鼓式過濾機Moving support : Drum 移動支撐：轉(zhuǎn)鼓 Rotary vacuum disc filter, 轉(zhuǎn)盤式過濾機Moving support : Disc 移動支撐：轉(zhuǎn)盤

5、 Table filter 翻盤式過濾機Moving support : Table 移動支撐：翻盤,Horizontal vacuum belt filter水平真空帶式過濾及,Horizontal vacuum belt filter 水平真空帶式過濾機,Features :特點：Support (belt) horizontally positioned支撐（皮帶）水平安裝Adequate piston effec

6、t for washing (either co-current or methodic)優(yōu)化沖洗效果 For settling pulp, optimization of the geometry of the cake優(yōu)化濾餅的顆粒分布No potential cracks in the cake ( washing efficiency > 99%)濾餅內(nèi)部無裂縫（沖洗效率>99%）Can treat «

7、; difficult » slurries ( settable, high viscosity, ..) 能處理各種有難度的料漿（高粘稠性）No residual volume無殘留 Wide range of adjustment for operation ( feed solid content may vary),運行寬度的調(diào)節(jié)（進料固體的含量會變化）Low maintenance cos

8、t ( because of updated engineering) 低維護成本（以為最新的技術(shù)）No need of protracted supervision,無須長時間的現(xiàn)場監(jiān)管 Exceptional utilization rate ( > 98%)優(yōu)異的利用率（>98%）,Horizontal vacuum belt filter 水平真空帶式過濾機,Disadvantages :缺點：space r

9、equired,需要的空間 incompatibility with solvents,和溶劑不相溶 total hooding ( tight enclosed) is difficult for important surfaces.對重要表面做整體護罩很困難,Rotary vacuum drum filter 轉(zhuǎn)鼓式真空過濾機,Rotary vacuum drum filter 轉(zhuǎn)鼓式真空過濾機,F

10、eatures特點low space requirement ,所需空間小possibility to cover filter,可覆蓋過濾機possibility to make a airtight filter,可以做成密封的過濾機high availability ( > 95%) ,高利用率( > 95%) low investment cost , operation cost, power cost

11、,低投資，運行成本，能耗成本process flexibility (NR, TS, NP, RL, RP, String, CA, SP types )工藝的靈活性may work with solvent or in very corrosive atmosphere (PP)可以與溶劑一起運行， 或可以在強腐蝕性環(huán)境運行may be used as a clarifier (NP type)可以作為澄清器用go

12、od dryness performance ( RP type)優(yōu)良的干燥效果worldwide more used vacuum filter solution….世界范圍內(nèi)使用較多的真空過濾機類型,Rotary vacuum drum filter 轉(zhuǎn)鼓式真空過濾機,Disadvantages :缺點Washing efficiency,沖洗效果Cannot be used for high densit

13、y pulps,不能用在高粘稠度料漿上 Difficulty when fluctuant feed solid content,不能用在固體顆粒含量變化大的料漿上 High transport cost ( cannot be shipped dismantled)高運輸成本（無法拆卸后船運）,Rotary vacuum disc filter 轉(zhuǎn)盤式真空過濾機,Rotary vacuum disc filter 轉(zhuǎn)

14、盤式真空過濾機,Features特點 very large filtration area,非常巨大的過濾空間 simple conception 簡單的結(jié)構(gòu) low exploitation cost 低開發(fā)成本,Disadvantage :缺點 No cake washing possibility 不能沖洗濾餅 only use for product easy to filtrate只能用于過濾容易過濾的產(chǎn)品,Tab

15、le filter翻盤式過濾機,Table filter,Features特點 Very large filtration area ( > 250m² ) ,非常大的過濾面積 Few moving parts (compared to tilting pan filter) 更少的移動部件（相對于斜盤式過濾機） Engineered for difficult atmosphere ( H3PO4)專為揮

16、發(fā)產(chǎn)品設(shè)計 Low operating costs,低運行成本 Higher productivity,高生產(chǎn)率 High availability高利用率 Very long life time非常長的使用壽命,Table filter 翻盤式過濾機,Disadvantages缺點 High capital cost ,高成本Only designed for phosphoric acid application 專

17、為磷酸產(chǎn)品設(shè)計,2 main types of washing process 兩種主要的沖洗工藝,Co current washing 正流沖洗,Often used經(jīng)常使用 Easy to operate易于操作,沖洗水入口,漿料入口,濾出液,沖洗液出口,2 main types of washing process,Methodic or counter current washing逆流沖洗,Used when proble

18、m of washing supply當沖洗水供應(yīng)量有限時,沖洗水入口,漿料入口,濾出液,沖洗液出口,漿料入口,濁液罐,Caracteristics特點,Process Competition 工藝比較,Filter press擠壓機 Pressure filter (Larox type)壓濾機（如LAROX） Belt filter without rubber belt無橡膠皮帶的帶式過濾機 Se

19、ttling (Counter Current Decantation),沉淀式（逆流沉降槽）Centrifuges離心機 Cyclone separation漩渦分離 Screening篩分 U-filtrationU型過濾,Process Competition 工藝比較,PRESSURE FILTER壓濾機,It is not working under vacuum….非真空條件下運行It 

20、;’s a vertical press filter…..垂直式壓濾機,PRESSURE FILTER 壓濾機,Squeezing by air or water通過空氣或者水擠壓,Filtration on horizontal plates在水平層面上過濾,Discharging排放 : Releving the platesMoving the cloth松開夾層移走濾布,Washing or dryin

21、g沖洗或干燥,PRESSURE FILTER 壓濾機,Features特點 Very good dryness非常優(yōu)秀的干燥效果 Minimal foot print占地面積小 No vacuum system required無須真空系統(tǒng),Disadvantages缺點,Discontinuous filter非連續(xù)過濾的過濾機 Less washing efficiency ( Problem of d

22、ist.)沖洗效率低 High operating cost高運行成本 Low availability低利用率,PRESSURE FILTER 壓濾機,For your information…...信息,FILTRES PHILIPPEBrochures : 1975 PHILIPPE過濾機樣本：1975,BELT FILTER WITHOUT BELT 無皮帶的帶式過濾機,No rub

23、ber belt, the Filtration cloth is directly in contact with trays無橡膠皮帶，濾布直接接觸托盤,,Trays托盤,,Cake濾餅,BELT FILTER WITHOUT BELT 無皮帶的帶式過濾機,Cycle description 循環(huán)描述Vacuum is on 真空打開的時候 filtration cloth is sealed on tr

24、aysFiltration is performingTrays are moving forwardend of course for trays濾布密封在托盤上，托盤向前移動到尾部Vacuum is off 真空關(guān)閉Trays is going back 托盤返回Trays in initial position 托盤回到初始位置Vacuum is on 真空再次打開,BELT FILTER WITHOUT BELT

25、 無皮帶的帶式過濾機,Features特點No rubber belt無須皮帶,Consequences結(jié)果Normally cheaper更便宜Can be installed for chemical application in which rubber is not allowed 可以在和橡膠不能共存的化學(xué)產(chǎn)品上使用,BELT FILTER WITHOUT BELT 無皮帶的帶式過濾

26、機,Disadvantages :缺點Cannot have large filtration area equipment不能做到較大的過濾面積Cracks in the cake due to stop of vacuum : Washing efficiency decrease由于真空的停頓造成濾餅裂縫：沖洗效率降低Duration life of the cloth reduced : All the loads

27、is supported by the cloth濾布壽命降低：所有的負載都由濾布支撐Filtrate cannot be clear because compromise between solidity&openingNon scalable equipment 由于固體和開口之間沒有緩沖設(shè)備造成濾液渾濁,WARNING 警告,Some customers are speaking about «

28、; belt » filters, but in their mind :一些客戶談?wù)搸竭^濾機，但是在他們的概念里belt = Filtration cloth皮帶=濾布,Specially, when they want to compare our HVBF with :特別是當他們想將我們的HVBF和以下設(shè)備比較的時候：Pressure filter ( Larox type)壓

29、濾機Belt filter without rubber belt無皮帶的帶式過濾機,COUNTER CURRENT DECANTATION逆流傾出,Features特點No filtration equipment無須過濾設(shè)備Very low operating cost ( low energy cost)非常低的運行成本（低能耗）Low maintenance 低維護成本,COUNTER CURRENT DECANT

30、ATION逆流傾出,Disadvantages缺點Maximal foot print 大占地面積High water consumption高水量消耗Very long response time長時間的等待,Solids are still in liquid phaseHigh capital cost固體仍然存在于液體中高投資,Process Competitioncaracteristics 工藝特點比較,CON

31、CLUSION結(jié)論,Even with good experience, we need to know environment of the problem :即使有豐富的經(jīng)驗我們也需要知道一下環(huán)境因素Solids concentration固液比 Flow rate流量 Granulometry粒徑分布 Temperature溫度 Viscosity,粘稠度 Chemical apsect ( corrosive

32、? Toxic ?, which material ?)化學(xué)性質(zhì) Objectives of the plant ( productivity ?, dryness ? Performance ?)工廠的意圖（產(chǎn)量？干燥效果？性能表現(xiàn)？） Filter aid ? Floculant ?過濾輔助 Allowable space for equipment ?設(shè)備的放置空間 Is there a problem for was

33、hing liquid supply ?沖洗液是否足夠 Is the cake to be dry ? How much ?濾餅需要干燥嗎，什么程度？,Example :例如：Hydromet. Process降壓藥 工藝,Different solutions :不同的工藝方法：HVBF« Good » washer 優(yōu)秀的沖洗RVDF« Bad 

34、» washer 不良的沖洗Under pressure filters壓濾機Discontinuous不連續(xù) Only for low % w/w solids 只能用以固體百分比低的料漿Counter current decantation傾出工藝Requires high volume of liquid要求大量液體,CONCLUSION 結(jié)論,A questionnary have to be fill

35、ed but at least, trials would be necessary :問卷需要填寫，至少，實驗是必要的：,To optimize the process requirements優(yōu)化工藝要求 To give adapted process guarantees提供適合的工藝保證 To give adapted mechanical guarantees提供適合的設(shè)備保證 To develop custome