水平式真空脫濾機(jī)功能對(duì)比

1、VACUUM FILTRATIONCOMPETITON 真空過濾比較1VACUUM FILTERS : PROCESS STEPS真空過濾機(jī)：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2Equivalent system with traditionnal pressure filters傳統(tǒng)壓濾機(jī)系統(tǒng)NOTA : Filter # means dual filter for continuous

2、 process注意：每處帶濾機(jī)都需要雙倍的帶濾機(jī)以滿足連續(xù)工藝的要求Vacuum filtration 真空過濾3INDUSTRIAL VACUUM FILTERS Filter 過濾機(jī) Filtrate receivers 濾液接收灌 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(tái)真空過濾裝置有以下部分組成：4INDUSTRIAL V

3、ACUUM FILTERS工業(yè)用真空過濾機(jī)Filtrate receiver濾液接收灌Cake washing濾餅沖洗Slurry料漿Cake discharge濾餅排放Filtrate濾液Vacuum pump真空泵Vacuum filter真空過濾機(jī)Filtrate extraction :濾液抽取Extraction pump抽取泵Or或者Barometric leg開口罐Or或者Auto-extractor receiver自動(dòng)抽取器5TYPE OF EQUIPMENT 設(shè)備類型 Horizontal belt filter水平帶式過濾機(jī)Moving support : Belt 移動(dòng)

4、支撐：皮帶 Rotary vacuum drum filter,真空轉(zhuǎn)鼓式過濾機(jī)Moving support : Drum 移動(dòng)支撐：轉(zhuǎn)鼓 Rotary vacuum disc filter, 轉(zhuǎn)盤式過濾機(jī)Moving support : Disc 移動(dòng)支撐：轉(zhuǎn)盤 Table filter 翻盤式過濾機(jī)Moving support : Table 移動(dòng)支撐：翻盤6Horizontal vacuum belt filter水平真空帶式過濾及 7Horizontal vacuum belt filter 水平真空帶式過濾機(jī)Features :特點(diǎn)：Support (belt) horizontal

5、ly positioned支撐（皮帶）水平安裝Adequate piston effect 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 difficult slurries ( settable, high viscosity, .) 能處理

6、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(yùn)行寬度的調(diào)節(jié)（進(jìn)料固體的含量會(huì)變化）Low maintenance cost ( because of updated engineering) 低維護(hù)成本（以為最新的技術(shù)）No need of protracted supervision,無須長時(shí)間的現(xiàn)場(chǎng)監(jiān)管 Exceptional utilization rate ( 98%)優(yōu)異的利用率（98%）8Horizontal vac

7、uum belt filter 水平真空帶式過濾機(jī)Disadvantages :缺點(diǎn)：space required,需要的空間 incompatibility with solvents,和溶劑不相溶 total hooding ( tight enclosed) is difficult for important surfaces.對(duì)重要表面做整體護(hù)罩很困難9Rotary vacuum drum filter 轉(zhuǎn)鼓式真空過濾機(jī) 10Rotary vacuum drum filter 轉(zhuǎn)鼓式真空過濾機(jī)Features特點(diǎn)low space requirement ,所需空間小possibil

8、ity to cover filter,可覆蓋過濾機(jī)possibility to make a airtight filter,可以做成密封的過濾機(jī)high availability ( 95%) ,高利用率( 95%) low investment cost , operation cost, power cost,低投資，運(yùn)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)

9、可以與溶劑一起運(yùn)行， 或可以在強(qiáng)腐蝕性環(huán)境運(yùn)行may be used as a clarifier (NP type)可以作為澄清器用good 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(jī)類型11Rotary vacuum drum filter 轉(zhuǎn)鼓式真空過濾機(jī)Disadvantages :缺點(diǎn)Washing efficiency,沖洗效果Cannot be used for high density pulps,不能用在高粘稠度料漿上 Diffi

10、culty 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(yùn)輸成本（無法拆卸后船運(yùn)）12Rotary vacuum disc filter 轉(zhuǎn)盤式真空過濾機(jī)13Rotary vacuum disc filter 轉(zhuǎn)盤式真空過濾機(jī) Features特點(diǎn) very large filtration area,非常巨大的過濾空間 simple conception 簡(jiǎn)單的結(jié)構(gòu) low exploitation cost 低開發(fā)成本 Disa

11、dvantage :缺點(diǎn) 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14Table filter翻盤式過濾機(jī) 15Table filter Features特點(diǎn) Very large filtration area ( 250m ) ,非常大的過濾面積 Few moving parts (compared to tilting pan filter) 更少的移動(dòng)部件（相對(duì)于斜盤式過濾機(jī)） Engineered for difficult atmosphere ( H3

12、PO4)專為揮發(fā)產(chǎn)品設(shè)計(jì) Low operating costs,低運(yùn)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16Table filter 翻盤式過濾機(jī) Disadvantages缺點(diǎn) High capital cost ,高成本Only designed for phosphoric acid application 專為磷酸產(chǎn)品設(shè)計(jì)172 main types of washing process 兩種主要的沖洗工藝Co current washing 正流沖洗 Often

13、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182 main types of washing process Methodic or counter current washing逆流沖洗 Used when problem of washing supply當(dāng)沖洗水供應(yīng)量有限時(shí)沖洗水入口 漿料入口 濾出液沖洗液出口漿料入口 濁液罐 19Caracteristics特點(diǎn) 20Process Competition 工藝比較 Filter press擠壓機(jī) Pressure filter (Larox type)壓濾機(jī)（如LAROX） Belt

14、 filter without rubber belt無橡膠皮帶的帶式過濾機(jī) Settling (Counter Current Decantation),沉淀式（逆流沉降槽）Centrifuges離心機(jī) Cyclone separation漩渦分離 Screening篩分 U-filtrationU型過濾21Process Competition 工藝比較22PRESSURE FILTER壓濾機(jī)It is not working under vacuum.非真空條件下運(yùn)行Its a vertical press filter.垂直式壓濾機(jī)23PRESSURE FILTER 壓濾機(jī)Squeez

15、ing by air or water通過空氣或者水?dāng)D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 drying沖洗或干燥24PRESSURE FILTER 壓濾機(jī)Features特點(diǎn) 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(diǎn) Discontinuous filter非連

16、續(xù)過濾的過濾機(jī) Less washing efficiency ( Problem of dist.)沖洗效率低 High operating cost高運(yùn)行成本 Low availability低利用率25PRESSURE FILTER 壓濾機(jī)For your information.信息FILTRES PHILIPPEBrochures : 1975 PHILIPPE過濾機(jī)樣本：197526BELT FILTER WITHOUT BELT 無皮帶的帶式過濾機(jī)No rubber belt, the Filtration cloth is directly in contact with tr

17、ays無橡膠皮帶，濾布直接接觸托盤Trays托盤Cake濾餅27BELT FILTER WITHOUT BELT 無皮帶的帶式過濾機(jī)Cycle description 循環(huán)描述Vacuum is on 真空打開的時(shí)候 filtration cloth is sealed on traysFiltration is performingTrays are moving forwardend of course for trays濾布密封在托盤上，托盤向前移動(dòng)到尾部Vacuum is off 真空關(guān)閉Trays is going back 托盤返回Trays in initial position

18、 托盤回到初始位置Vacuum is on 真空再次打開28BELT FILTER WITHOUT BELT 無皮帶的帶式過濾機(jī)Features特點(diǎn)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 29BELT FILTER WITHOUT BELT 無皮帶的帶式過濾機(jī)Disadvantages :缺點(diǎn)Cannot have large filtration

19、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 is supported by the cloth濾布?jí)勖档停核械呢?fù)載都由濾布支撐Filtrate cannot be clear because compromise between solidity&openingNon scalable equipment

20、由于固體和開口之間沒有緩沖設(shè)備造成濾液渾濁30WARNING 警告Some customers are speaking about beltfilters, but in their mind :一些客戶談?wù)搸竭^濾機(jī)，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(dāng)他們想將我們的HVBF和以下設(shè)備比較的時(shí)候：Pressure filter ( Larox type)壓濾機(jī)Belt filter without rubber belt無皮帶的帶式過濾機(jī)31

21、COUNTER CURRENT DECANTATION逆流傾出Features特點(diǎn)No filtration equipment無須過濾設(shè)備Very low operating cost ( low energy cost)非常低的運(yùn)行成本（低能耗）Low maintenance 低維護(hù)成本32COUNTER CURRENT DECANTATION逆流傾出Disadvantages缺點(diǎn)Maximal foot print 大占地面積High water consumption高水量消耗Very long response time長時(shí)間的等待Solids are still in liquid

22、 phaseHigh capital cost固體仍然存在于液體中高投資33Process Competitioncaracteristics 工藝特點(diǎn)比較34CONCLUSION結(jié)論 Even with good experience, we need to know environment of the problem :即使有豐富的經(jīng)驗(yàn)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 ? Toxic ?, which material ?)化學(xué)性質(zhì) Objectives of the plant ( productivity ?, dryness ? Performance ?)工廠的意圖