JP2737787B2 - Tubular filter for precoat filtration - Google Patents
Tubular filter for precoat filtrationInfo
- Publication number
- JP2737787B2 JP2737787B2 JP63306804A JP30680488A JP2737787B2 JP 2737787 B2 JP2737787 B2 JP 2737787B2 JP 63306804 A JP63306804 A JP 63306804A JP 30680488 A JP30680488 A JP 30680488A JP 2737787 B2 JP2737787 B2 JP 2737787B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- filtration
- core tube
- holes
- precoat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001914 filtration Methods 0.000 title claims description 24
- 239000004744 fabric Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 10
- 239000000725 suspension Substances 0.000 description 8
- 238000005406 washing Methods 0.000 description 6
- 239000011550 stock solution Substances 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 239000005909 Kieselgur Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 241000206761 Bacillariophyta Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は懸濁液を濾過して精製濾液を得るに用いられ
る筒状濾過材に関する。Description: TECHNICAL FIELD The present invention relates to a tubular filtration material used for filtering a suspension to obtain a purified filtrate.
懸濁物を含む大量の液を効率よく濾過して精製濾液を
取得する装置として、缶体とその上部に設けた蓋体との
間に中間仕切板を設けてその下方の原液室と上方の濾液
室とに分け、その中間仕切板にたとえば円筒状濾過体の
１個以上を垂設してその濾過体の内部空間を濾液室に連
通させた上部集液式の濾過機が知られている。As an apparatus for efficiently filtering a large amount of liquid containing a suspension to obtain a purified filtrate, an intermediate partition plate is provided between a can body and a lid body provided on the can body, and a stock solution chamber below the canister and an upper stock solution chamber are provided. 2. Description of the Related Art There is known an upper liquid collecting type filter in which a filter is divided into a filtrate chamber, and at least one or more cylindrical filters are suspended from an intermediate partition plate and an inner space of the filter is communicated with the filtrate chamber. .
かかる濾過装置においては、懸濁液をポンプ等によっ
て原液室に加圧供給して濾液室より精製濾液を回収する
が、懸濁物が濾材を通過して濾液室に洩れることを防ぐ
と共に濾材の早期目詰まりを予防するために、たとえば
珪藻土のような濾過助剤を予め塗布上にプレコートした
濾材を用いることがある。このような場合、濾材上に厚
く濾滓が堆積して濾過効率が低下したときは、懸濁液の
供給を停止して濾材を逆洗し、濾滓を濾過助剤と共に剥
離除去して排出し、その後再び濾過助剤のプレコートを
行なってから濾過を再開する。In such a filtration apparatus, the suspension is supplied under pressure to a stock solution chamber by a pump or the like, and a purified filtrate is collected from the filtrate chamber. However, the suspension is prevented from passing through the filter medium and leaking into the filtrate chamber, and the filtration medium is prevented from leaking. In order to prevent premature clogging, a filter medium pre-coated with a filter aid such as diatomaceous earth may be used. In such a case, when the filter efficiency is lowered due to the thick accumulation of filter cake on the filter medium, the supply of the suspension is stopped, the filter medium is backwashed, and the filter cake is peeled off together with the filter aid and discharged. Then, after pre-coating the filter aid again, the filtration is restarted.
このような濾材の洗浄再生作業は、なるべく短時間で
効率的に実施することが望まれるので、原液室から排出
される逆洗液中に懸濁物が殆んど含まれなくなったとき
に逆洗を停止し、次いで濾過助剤の懸濁液を原液室の底
から送り込んで濾液室から洗浄液を回収することによっ
て、筒状濾過体の濾布上に濾過助剤のプレコート層を形
成して濾材とする。しかし、濾過助剤は塗布上にすべて
が留まることは少くて一部は濾布を通過するから、洩れ
た濾過助剤を含むプレコート処理液は回収して原液室へ
循環し、濾過助剤の洩れが無くなるようになってはじめ
て濾材の再生作業を終了していた。Since it is desired that such a filter medium washing and regenerating operation be performed as efficiently as possible in as short a time as possible, the reverse washing liquid discharged from the undiluted solution chamber is almost free of suspended solids. Stopping the washing, then feeding the suspension of the filter aid from the bottom of the stock solution chamber and collecting the washing solution from the filtrate chamber, thereby forming a precoat layer of the filter aid on the filter cloth of the cylindrical filter body. Filter material. However, it is rare that all of the filter aid stays on the coating, and a part of the filter aid passes through the filter cloth. Therefore, the precoat treatment liquid containing the leaked filter aid is recovered and circulated to the stock solution chamber, and the filter aid is removed. Only after the leak has been eliminated, the regeneration of the filter medium has been completed.
前述のように手順によって濾過助剤のプレコートを行
なったとき、一般にプレコート層の厚さが筒状濾過体の
下部においては薄く、上部ほど厚くなる傾向がある。そ
してプレコート層が薄いときはピンホールが生じ易くて
濾滓洩れの原因となるので、濾過精度を高く維持するた
めには濾過助剤の使用量を増加しなければならず、プレ
コートに要する時間も長くかかるという問題があった。When the filter aid is pre-coated by the procedure as described above, the thickness of the pre-coat layer generally tends to be thin at the lower portion of the tubular filter and thicker at the upper portion. And when the precoat layer is thin, pinholes are likely to occur and cause leakage of the cake, so in order to maintain high filtration accuracy, the amount of the filter aid used must be increased, and the time required for the precoat also increases. There was a problem that it took a long time.
そこで本発明は、プレコート層の厚さを平均化するこ
とができる筒状濾過体の提供を目的とした。Then, an object of the present invention was to provide a cylindrical filter body capable of averaging the thickness of the precoat layer.
かかる本発明の目的は、複数の透孔を穿設した芯筒と
該芯筒外面に接して設けた透液性の緩衝材層と該緩衝材
層外面に接して設けた濾布とを備え垂設使用される筒状
濾過体において、該透孔の断面積の総和が該芯筒内空間
の断面積の２倍以下であって、該芯筒外面の単位面積当
りの該透孔の断面積が該芯筒の下端近傍で上端近傍の２
倍以上であると共に下端より上端に向って減少するよう
に該透孔が設けられている、プレコート濾過用の筒状濾
過体によって達成される。An object of the present invention is to provide a core tube having a plurality of through holes, a liquid-permeable buffer layer provided in contact with the outer surface of the core tube, and a filter cloth provided in contact with the outer surface of the buffer layer. In a vertically mounted cylindrical filter, the sum of the cross-sectional areas of the through-holes is not more than twice the cross-sectional area of the inner space of the core tube, and the cross-sectional area of the through-hole per unit area of the outer surface of the core tube is reduced. The area is 2 near the lower end and near the upper end of the core tube.
This is achieved by a tubular filter for precoat filtration, wherein the through-holes are provided so as to be more than doubled and to decrease from the lower end toward the upper end.
前記の構成を有する本発明の筒状濾過体を垂設した濾
過装置において濾過体上に珪藻上のような濾過助剤のプ
レコートを行なうときは、プレコート層の厚さが平均化
するので、ピンホールのないプレコートを形成するに必
要な濾過助剤の使用量を格段に減少させることができ、
プレコートに要する作業時間が短縮できる。When performing pre-coating of a filter aid such as diatoms on the filter in the filtration device having the tubular filter of the present invention having the above-described configuration, the thickness of the pre-coat layer is averaged, The amount of filter aid required to form a precoat without holes can be significantly reduced,
The work time required for precoating can be reduced.
外径26mm、肉厚3mm、長さ80cmの硬質合成樹脂管に対
して、上部には管の長さ15cm当り２個の割合となるよう
に６個の、また下部には管の長さ5cm当り２個の割合と
なるように６個の、さらに中間部には管の長さ10cm当り
２個の割合となるように４個の、それぞれ径5mmの通液
孔を合計で16個設けたもの（芯筒Ａ）、および同様に上
部には管の長さ10cm当り４個の割合となるように16個
の、また下部には管の長さ2.5cm当り４個の割合となる
ように16個の、さらに中間部には管の長さ7.5cm当り４
個の割合となるように16個の、それぞれ径3mmの通液孔
を合計で48個設けたもの（芯筒Ｂ）を準備した。For a hard synthetic resin tube with an outer diameter of 26 mm, a wall thickness of 3 mm, and a length of 80 cm, 6 tubes are provided at the top at a ratio of 2 tubes per 15 cm length, and 5 cm at the bottom. 6 holes were provided at a ratio of 2 per tube, and 4 holes were provided at the middle portion of the tube at a ratio of 2 per 10 cm of tube length, each having a diameter of 5 mm in total of 16 holes. Stuff (core tube A), and likewise at the top, at a rate of 4 per 10 cm of tube length, and at the bottom, at a rate of 4 per 2.5 cm tube length 16 pieces and 4 pieces per 7.5cm tube length in the middle
A total of 48 liquid-passing holes each having a diameter of 3 mm (core tube B) were prepared so that the number of the liquid-passing holes was 3 in each case.
これらの芯筒の外面にポリアミド単繊維からなる目開
き約1mmの織網を厚さ約6mmとなるように巻き付け、その
上にポリプロピレン繊維からなる目開き約20μｍの筒状
平織り濾布を被せて筒状濾過体を形成した。Wrap a woven mesh of about 1 mm of polyamide single fiber around the outer surface of these core tubes so as to have a thickness of about 6 mm, and cover it with a tubular plain woven filter cloth of about 20 μm of mesh made of polypropylene fiber. A cylindrical filter was formed.
これらの濾過体を中間仕切板に垂設した上部集液式の
濾過機を用いて第１図に示すような装置を組み立てた。
この装置において珪藻土からなる濾過助剤のスラリーを
タンクＶから循環ポンプＰによって濾過機Ｆに供給し、
濾過体Ｔの表面の濾布上に濾過助剤の層を形成しながら
濾液を循環させ、濾液が完全に清澄化したのち濾過体Ｔ
上に形成されたプレコート層の状態を調べた。なお、図
においてＡは圧縮空気入口、Ｂは濾液出口、Ｃは懸濁液
入口、Ｄはドレン排出口である。An apparatus as shown in FIG. 1 was assembled using an upper liquid collecting type filter in which these filter bodies were suspended from an intermediate partition plate.
In this apparatus, a slurry of a filter aid made of diatomaceous earth is supplied from a tank V to a filter F by a circulation pump P,
The filtrate is circulated while forming a filter aid layer on the filter cloth on the surface of the filter T, and after the filtrate is completely clarified, the filter T
The state of the precoat layer formed thereon was examined. In the figure, A is a compressed air inlet, B is a filtrate outlet, C is a suspension inlet, and D is a drain outlet.
また、比較のために径5mmの通液孔を管の全長にわた
って長さ2cm当り２個の割合となるように均一に設けた
もの（芯筒Ｃ）および径5mmの通液孔を芯筒Ｂと同様の
配置で設けたもの（芯筒Ｄ）を用意し、上述と同様に濾
過体を形成してプレコート試験を行なった。For comparison, a 5 mm diameter liquid passage hole was provided uniformly at a ratio of 2 per 2 cm length over the entire length of the pipe (core tube C) and a 5 mm diameter liquid passage hole was formed in the core tube B. (Core tube D) provided in the same arrangement as above was prepared, a filter was formed in the same manner as described above, and a precoat test was performed.
従来から使用されていたような、通液孔が均一に配置
された芯筒Ｃを用いた濾過体を使用した場合、ピンホー
ルのないプレコート層を得るために必要な濾過助剤（珪
藻土）の量は、濾過面積１m2当り1300〜1500gであり、
このときのプレコート層の厚みは濾過体下部において約
2mmで濾過体上部において約6mmであった。When a filter using a core tube C in which liquid passage holes are uniformly arranged, as conventionally used, is used, a filter aid (diatomaceous earth) necessary for obtaining a precoat layer without pinholes is used. the amount is the filtration area 1 m 2 per 1300～1500G,
The thickness of the precoat layer at this time is about
It was 2 mm and about 6 mm at the top of the filter.
これに対して芯筒Ａおよび芯筒Ｂを使用した本発明の
濾過体においては、濾過助剤の使用量が１m2当り600gを
ピンホールのないほゞ均一な厚みを有するプレコート層
が得られ、その厚みは約2mmであった。On the other hand, in the filter of the present invention using the core tube A and the core tube B, the amount of the filter aid used was 600 g per 1 m 2 and a precoat layer having a substantially uniform thickness without pinholes was obtained. And its thickness was about 2 mm.
また芯筒Ｄを使用した濾過体では、下部において厚み
が大きいプレコート層が得られた。In the filter using the core tube D, a precoat layer having a large thickness was obtained at the lower portion.
これらの結果を整理すると表１のとおりである。 Table 1 summarizes these results.
一方、前記の濾過体No.1（芯筒Ａ使用）を取付けた上
部集液式濾過機を用いた第１図の濾過装置において、濾
過助剤の量を１m2当り600gとして金属めっき液の濾過精
製を行ない、逆洗・プレコート・濾過の運転繰返し回数
と濾過機の濾過操作開始直後の通液抵抗（圧損）との関
係を調べたところ、濾過体の目詰まりの進行は非常に僅
かであった。 On the other hand, in the filtration device of FIG. 1 using the upper liquid collecting type filter equipped with the above-mentioned filter body No. 1 (using core tube A), the amount of the filter aid was set to 600 g / m 2 and the metal plating solution was removed. Filtration and purification were conducted, and the relationship between the number of repetitions of backwashing / precoating / filtration and the flow resistance (pressure loss) immediately after the start of the filtration operation of the filter was examined. The progress of clogging of the filter was very slight. there were.
また前記の濾過体No.3（芯筒Ｃ使用）を用いたほか、
上記と同様にして濾過体の目詰まりの進行を調べたとこ
ろ、洗浄再生36回の直後で圧損が1.0kg/cm2に達し、そ
れ以上の濾過運転はできなかった。In addition to using the aforementioned filter body No. 3 (using core tube C),
When the progress of clogging of the filter body was examined in the same manner as above, the pressure loss reached 1.0 kg / cm 2 immediately after the 36 times of washing and regeneration, and no further filtration operation was possible.
これらの結果を第２図に示した。 These results are shown in FIG.
本発明のプレコート濾過用筒状濾過体は、上部集液式
濾過機に垂設したときプレコート用濾過助剤の使用量が
小量でも欠陥のないプレコート層を形成できるので、副
資材費用が節減できるのみならず洗浄再生に要する時間
が短くなり稼働効率を高めることができ、また濾過体の
目詰りの進行が著しく制御される特長がある。The tubular filter body for precoat filtration of the present invention can form a precoat layer without defects even when the amount of the precoat filter aid used is small when it is vertically installed on an upper liquid collecting filter, thereby reducing auxiliary material costs. In addition to this, the time required for washing and regeneration can be shortened, the operating efficiency can be increased, and the progress of clogging of the filter is significantly controlled.
第１図は本発明のプレコート濾過用筒状濾過体を取付け
て使用する濾過装置の構成図、第２図は濾過・再生運転
の繰返しによる濾過体の目詰まりの進行状況を示すグラ
フである。 Ａ……圧縮空気入口、Ｂ……濾液出口、Ｃ……懸濁液入
口、Ｄ……ドレン排出口、Ｆ……濾過機、Ｔ……筒状濾
過体、Ｖ……濾過助剤用スラリータンク。FIG. 1 is a configuration diagram of a filtration device to which a tubular filtration body for precoat filtration of the present invention is attached and used, and FIG. 2 is a graph showing the progress of clogging of the filtration body due to repeated filtration / regeneration operations. A: Compressed air inlet, B: Filtrate outlet, C: Suspension inlet, D: Drain outlet, F: Filter, T: Cylindrical filter, V: Slurry for filter aid tank.
フロントページの続き (72)発明者 能津 十三郎 愛知県名古屋市中村区亀島２丁目22番２ 号 株式会社三進製作所内Continuation of the front page (72) Inventor Tosaburo Notsu 2-2-2-2 Kameshima, Nakamura-ku, Nagoya-shi, Aichi Pref.
Claims (1)
接して設けた透液性の緩衝材層と該緩衝材層外面に接し
て設けた濾布とを備え垂設使用される筒状濾過体におい
て、該透孔の断面積の総和が該芯筒内空間の断面積の２
倍以下であって、該芯筒外面の単位面積当りの該透孔の
断面積が該芯筒の下端近傍で上端近傍の２倍以上である
と共に下端より上端に向って減少するように該透孔が設
けられている、プレコート濾過用の筒状濾過体。A core tube having a plurality of through holes; a liquid-permeable buffer layer provided in contact with the outer surface of the core tube; and a filter cloth provided in contact with the outer surface of the buffer material layer. In the cylindrical filter used, the sum of the cross-sectional areas of the through holes is 2% of the cross-sectional area of the inner space of the core tube.
And the cross-sectional area of the through hole per unit area of the outer surface of the core cylinder is twice or more as large as the vicinity of the lower end of the core cylinder and the vicinity of the upper end, and is reduced from the lower end toward the upper end. A tubular filtration body for precoat filtration, provided with holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63306804A JP2737787B2 (en) | 1988-12-06 | 1988-12-06 | Tubular filter for precoat filtration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63306804A JP2737787B2 (en) | 1988-12-06 | 1988-12-06 | Tubular filter for precoat filtration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02152508A JPH02152508A (en) | 1990-06-12 |
| JP2737787B2 true JP2737787B2 (en) | 1998-04-08 |
Family
ID=17961461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63306804A Expired - Lifetime JP2737787B2 (en) | 1988-12-06 | 1988-12-06 | Tubular filter for precoat filtration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2737787B2 (en) |
-
1988
- 1988-12-06 JP JP63306804A patent/JP2737787B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02152508A (en) | 1990-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3733267A (en) | Process of filtration of dry cleaning fluid | |
| US2423172A (en) | Backwashing means for filtering apparatus by reverse flow of filtrate | |
| US4167482A (en) | Filtering method and apparatus | |
| US4986913A (en) | Filter pad | |
| US5766486A (en) | Hybrid filter system and method for filtering process fluid | |
| JPH04501981A (en) | Suspension filtration method and device | |
| JPS6255885B2 (en) | ||
| JP2737787B2 (en) | Tubular filter for precoat filtration | |
| US5972228A (en) | Filters employing "filling bodies" to reduce the amount of backwashing fluid remaining in the filters after backwashing | |
| US4266412A (en) | Filtering device for dry cleaning | |
| DE4237714C2 (en) | Crossflow precoat filtration process | |
| JPH08173716A (en) | Filter bag and filtration device using the bag | |
| US2016161A (en) | Filtercandle for artificial silk and process of filtering artificial silk solutions | |
| JP2607101B2 (en) | Filtration device | |
| JP3114487B2 (en) | Filtration equipment using an asymmetric filtration membrane. | |
| JPH05309242A (en) | Filter element and liquid treating device | |
| JP3225994B2 (en) | Filtration equipment using an asymmetric filtration membrane | |
| JP3443456B2 (en) | Immersion suction type continuous filtration device using a pleated filter cylinder | |
| JPH0541761Y2 (en) | ||
| JPS6123006B2 (en) | ||
| JPH05212254A (en) | Hollow-fiber membrane module filter | |
| US5057232A (en) | Filter element and method of filtration | |
| JPS6365920A (en) | Washing of filter medium of filter | |
| CA1110552A (en) | Rotary drum filter and method of operation for medium cleaning | |
| EP0204871A1 (en) | Process and apparatus for filtration of oil and gas well fluids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090116 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term |