JPS63130156A - Solid-liquid separation method - Google Patents
Solid-liquid separation methodInfo
- Publication number
- JPS63130156A JPS63130156A JP27404386A JP27404386A JPS63130156A JP S63130156 A JPS63130156 A JP S63130156A JP 27404386 A JP27404386 A JP 27404386A JP 27404386 A JP27404386 A JP 27404386A JP S63130156 A JPS63130156 A JP S63130156A
- Authority
- JP
- Japan
- Prior art keywords
- cake
- filtrate
- stage
- centrifugal separator
- discharged
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 42
- 238000000926 separation method Methods 0.000 title claims abstract description 13
- 239000000706 filtrate Substances 0.000 claims abstract description 11
- 239000010419 fine particle Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 15
- 238000011084 recovery Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、数十ミクロンからサブミクロンに至る微粒子
からなる固形物を含む処理液を分離する固液分離方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a solid-liquid separation method for separating a processing liquid containing solid matter consisting of fine particles ranging from several tens of microns to submicrons.
従来、この種の固液分離においては、ｒ布を使用したバ
キュームフィルター、ベルトフィルターか
等、また、デ嘴ンター等の遠心分ｍ機を使用していたが
、前者においては、微粒子を含む処理液の場合、ｒ過性
が悪く、大きなＰ布面積を必要とし、ヤ
また、ＰＭの目づまりのため洗浄工程をひんばんに組み
入れる必要があり、連続運転性、メンテナンスの点で問
題があった。また、後者の遠心分離機の場合、単一段で
はケーキ回収率が悪く、更に、ケーキ含液率も高鳴、特
に微粒子で形成される固形分はほとんどｒ源側に漏れる
という問題があった。なお、この種の装置として関連す
るものには、例えば実公昭４３−２８２０９４ｇ等が挙
げられる。Conventionally, this type of solid-liquid separation has used vacuum filters, belt filters, etc. using R cloth, and centrifugal separators such as de-beak centers. In the case of a liquid, it has poor r-permeability, requires a large P fabric area, and also requires frequent cleaning steps due to PM clogging, which poses problems in terms of continuous operation and maintenance. Further, in the case of the latter centrifugal separator, there was a problem that the cake recovery rate was poor in a single stage, and the cake liquid content was also high, and in particular, most of the solid content formed by fine particles leaked to the r source side. Note that related devices of this type include, for example, Utility Model Publication No. 43-282094g.
上記従来技術においては、ｒ布を使用した装置の場合、
Ｐ°布の目づまりに対応して洗浄工程およびｒ布の交換
等、連続運転性を阻害する問題があり、また、単一段の
遠心分離機では分離性能の低下の問題があった。In the above conventional technology, in the case of a device using r cloth,
In response to clogging of the P° cloth, there is a problem that the washing process and the replacement of the R cloth impede continuous operation, and single-stage centrifugal separators have the problem of deterioration of separation performance.
本発明の目的は、分離性能と連続運転性のすく゛れた固
液分離方法を提供することにある。An object of the present invention is to provide a solid-liquid separation method with improved separation performance and continuous operability.
上記目的は、遠心分離機を直列多段に設置し、Ｎ１段遠
心分ｌＩＩ機では排出されるケーキの含液率が最小とな
るようにＰ源側とケーキ側の流量比を設定し、第２段遠
心分＃機ではＦ源側のケーキの漏れが最小となるように
Ｐ源側とケーキ側の流量比を設定することにより達成さ
れる。The above purpose is to install centrifuges in multiple stages in series, set the flow rate ratio between the P source side and the cake side so that the liquid content of the cake discharged in the N1 stage centrifugal separator is minimized, and In a stage centrifugal separation machine, this is achieved by setting the flow rate ratio between the P source side and the cake side so that cake leakage on the F source side is minimized.
第１段遠心分＃１機では、比較的大きい粒子とろ液とに
分離するため、分離性能はよ畷、粒子の漏れを防止する
せきの高さとケーキを排出するスクリューの回転速度を
調整することにより、排出されるケーキの含液率を最小
にすることができる。The first stage centrifugal #1 machine separates relatively large particles and filtrate, so the separation performance is poor, so the height of the weir to prevent particle leakage and the rotational speed of the screw to discharge the cake must be adjusted. This allows the liquid content of the discharged cake to be minimized.
また、第２段遠心分離機では、微粒子を含む小さい粒子
とＦ液とを分離するため、分離性能は悪く。Furthermore, the second stage centrifugal separator has poor separation performance because it separates small particles including fine particles from the F liquid.
このため、せきの高さとスクリューの回転速度を調整し
て処理液の滞留時間な長（することにより、ｒ源側のケ
ーキの漏れを最小にして、ケーキの回収率を向上させる
ことができる。Therefore, by adjusting the height of the weir and the rotational speed of the screw to lengthen the residence time of the processing liquid, it is possible to minimize cake leakage on the r source side and improve the cake recovery rate.
以下、本発明の一実施例を第１図により説明する。本実
施例は、一般にデカンタ−と称される遠心沈降分離機を
２台直列に設置したものである。An embodiment of the present invention will be described below with reference to FIG. In this embodiment, two centrifugal sedimentation separators, generally called decanters, are installed in series.
ケーキを含む処理液は入口配管１０を通って第１段遠心
分離ｍｌ内に入り、ケーキは遠心分離されて回転胴３の
内壁にたい積する。しかして、スクリュー５が回転する
ことにより、たい積したケーキをケーキ出口配管１１に
排出させる。Ｐ液とケーキ出口配管１１に排出されなか
９た一部のケーキは、ｒ液出口配管ｎへ排出される。モ
ーター７は回転胴３．スクリュー５を駆動している。Ｐ
液出口配管校は＠２段遠心分離機２の入口に接続されて
いる。そして第１段遠心分＃Ｉ機ｌと同様な構成で、第
２段遠心分離Ｗ２も回転胴４．スクリュー６゜モーター
８． Ｆ液出口配管１４．ケーキ出口配管１３が配置さ
れている。The processing liquid containing the cake enters the first stage centrifugal separator ml through the inlet pipe 10, and the cake is centrifuged and deposited on the inner wall of the rotating drum 3. As the screw 5 rotates, the accumulated cake is discharged to the cake outlet pipe 11. Part of the cake that has not been discharged to the P liquid and the cake outlet pipe 11 is discharged to the r liquid outlet pipe n. The motor 7 is a rotating body 3. It drives the screw 5. P
The liquid outlet piping is connected to the inlet of the two-stage centrifuge 2. With the same configuration as the first stage centrifugal separator #I machine, the second stage centrifugal separator W2 also has a rotary cylinder 4. Screw 6° motor 8. F liquid outlet piping 14. A cake outlet pipe 13 is arranged.
第１段遠心分離機ｌの回転胴３内側の詳細を第２図に示
す。大きい粒子層１９は回転胴３の内壁面上にだい禎し
、その上に小さい粒子層１８．Ｆ液量７と順にたい積す
る。また、処理液の回転胴３内での沈降時間およびＰ液
量を調整するためにせき七が設けである。ケーキの含液
率はスクリューの排出速度と、せき１５の高さ、処理液
の粒子径に関係する。つまり、せき巧の高さを低くすれ
ばケーキの含液率は向上するが、ケーキの回収率は低下
する。また、スクリｓ−５の排出速度を速くすれば、ケ
ーキ含液率は低下するのが一般的であるが、処理液の粒
子分布によっては逆の場合もある。第１段遠心分離［１
ではケーキの含液率を低くする必要があるため、実処理
液を入れてスクリュー速度、せき高さを前述の目的に合
致させるように調整する。スクリュー速度とせき高さが
決定すれば、ケーキ側、Ｐ液側流量も必然的に決まる。Details of the inside of the rotating barrel 3 of the first stage centrifugal separator 1 are shown in FIG. A layer of large particles 19 is formed on the inner wall surface of the rotary cylinder 3, and a layer of small particles 18 is formed on top of the inner wall surface of the rotary cylinder 3. Accumulate F liquid amount 7 in order. In addition, a drain is provided to adjust the sedimentation time of the processing liquid within the rotary drum 3 and the amount of P liquid. The liquid content of the cake is related to the discharge speed of the screw, the height of the weir 15, and the particle size of the processing liquid. In other words, if the height of the drain is lowered, the liquid content of the cake will increase, but the recovery rate of the cake will decrease. Further, if the discharge speed of Scree S-5 is increased, the cake liquid content generally decreases, but the opposite may be true depending on the particle distribution of the processing liquid. First stage centrifugation [1
Since it is necessary to lower the liquid content of the cake, the actual processing liquid is added and the screw speed and weir height are adjusted to meet the above-mentioned purpose. Once the screw speed and weir height are determined, the flow rates on the cake side and P liquid side are also determined.
第２段遠心分離機２の回転胴４内壁の状態を第３図に示
す。第１段遠心分ｉｌ１機１で粒子の大きいケーキは分
離してケーキ側に排出されているため、回転胴４内壁面
上には、小さい粒子層１８とその上にｆ液量７かたい積
する。更に、処理液の滞留時間を調整するためにせき１
６が設けである。第２段遠心分離機２はケーキ回収率を
最大にする必要があるため、前述と同様にスクリュー６
の速度とせき１６の高さを調整する。そして、ケーキ回
収率を最大にするための条件を決定する。FIG. 3 shows the condition of the inner wall of the rotating drum 4 of the second stage centrifugal separator 2. Since the cake with large particles is separated and discharged to the cake side in the first stage centrifugal separator 1, a layer of small particles 18 is deposited on the inner wall surface of the rotary cylinder 4, and an amount of liquid 7 is deposited on top of the layer 18 of small particles. . Furthermore, in order to adjust the residence time of the processing liquid, a
6 is a provision. The second stage centrifuge 2 needs to maximize the cake recovery rate, so the screw 6
Adjust the speed and height of the weir 16. Then, conditions for maximizing the cake recovery rate are determined.
以上のように第１段遠心分離機１ではケーキ含液率を最
小にするように条件を設定し、第１段遠心分離ｉａｌの
Ｐ源側の流体を処理する第２段遠心分離機２ではケーキ
の回収量を最大にするように条件を設定することにより
、総合的にケーキ含液率を低くし、ケーキ回収率を向上
させることができる。なお、第２段遠心分離機２は、ケ
ーキ回収率を向上させる反面ケーキの含液率は増大する
が。As described above, the conditions are set to minimize the cake liquid content in the first stage centrifugal separator 1, and in the second stage centrifugal separator 2, which processes the fluid on the P source side of the first stage centrifugal separator ial. By setting conditions to maximize the amount of cake recovered, it is possible to lower the cake liquid content overall and improve the cake recovery rate. Although the second stage centrifugal separator 2 improves the cake recovery rate, it also increases the liquid content of the cake.
処理液量は第１段遠心分離８！１の量より少ないため、
第１段遠心分離機ｌ、第２段遠心分離６１！２のケーキ
を混合させた時、第２段遠心分離機２の含液率の悪化分
は全体的にみれば影響は少ない。また、本発明の意図と
るところは、本実施例のように２台だけの編成にとどま
らず、同様の目的を全うするためには更に多くの遠心分
離機を設置する二ともできる。Since the amount of processed liquid is less than the amount of the first stage centrifugation 8!1,
When the cakes from the first-stage centrifugal separator 1 and the second-stage centrifugal separator 61!2 are mixed, the deterioration of the liquid content in the second-stage centrifugal separator 2 has little effect overall. Further, the intention of the present invention is not limited to the configuration of only two centrifuges as in this embodiment, but it is also possible to install more centrifuges in order to achieve the same purpose.
本発明によれば、ｆ相交換、洗浄等の連続運転性を阻害
する要因がないため、連続運転が可能であり、かつ、分
離性能を向上させることができ、運転コストを低下させ
ることができる。According to the present invention, since there are no factors that inhibit continuous operation such as f-phase exchange and washing, continuous operation is possible, separation performance can be improved, and operating costs can be reduced. .
第１図は本発明の一実施例を示す固液分離装置の系統図
、第２因は第１段遠心分離機の回転胴の部分断面図、第
３図は第２段遠心分離機の回転胴の部分断面図である。
ｌ・・・・・・Ｎ１段遠心分離機、２・・・・−・第２
段遠心分離機、３，４・・・・・・回転胴、５，６・・
・・・・スクリュー、７．８・・・・・・モーター、１
０・・・・・・入口配管、１１．１３・・・ケーキ出口
配管、１２．１４・・・・・−Ｐ液出口配管、１５゜１
６・・・・・・せき、１７・・・・・・ｒ液、１８・・
・・・・小さい粒子層、才２図 第３図
くごFig. 1 is a system diagram of a solid-liquid separator showing one embodiment of the present invention, the second cause is a partial sectional view of the rotating barrel of the first stage centrifugal separator, and Fig. 3 is the rotation of the second stage centrifugal separator. FIG. 3 is a partial cross-sectional view of the trunk. l...N1 stage centrifugal separator, 2...--2nd
Stage centrifugal separator, 3, 4... Rotating barrel, 5, 6...
...Screw, 7.8 ...Motor, 1
0...Inlet piping, 11.13...Cake outlet piping, 12.14...-P liquid outlet piping, 15゜1
6...Cough, 17...R liquid, 18...
・・・・Small particle layer, Figure 2 Figure 3 Kugo
Claims (1)
給し、遠心分離によって固形物とろ液とを分離し、前記
回転胴の一端側よりろ液を排出し、他端側よりケーキを
排出する遠心分離機を用いた固液分離方法において、前
記遠心分離機を直列多段に設置し、第１段遠心分離機で
は排出されるケーキの含液率が最小となるようにろ液側
とケーキ側の流量比を設定し、第２段遠心分離機ではろ
液側のケーキの漏れが最小となるようにろ液側とケーキ
側の流量比を設定したことを特徴とする固液分離方法。1. A processing liquid containing solid matter made of fine particles is supplied into the rotating barrel, the solid matter and the filtrate are separated by centrifugation, the filtrate is discharged from one end of the rotating barrel, and the cake is removed from the other end. In a solid-liquid separation method using a discharge centrifuge, the centrifuges are installed in multiple stages in series, and in the first stage centrifuge, the filtrate side and the filtrate side are separated so that the liquid content of the discharged cake is minimized. A solid-liquid separation method characterized in that the flow rate ratio on the cake side is set, and the flow rate ratio on the filtrate side and the cake side is set so that leakage of the cake on the filtrate side is minimized in the second stage centrifugal separator. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27404386A JPS63130156A (en) | 1986-11-19 | 1986-11-19 | Solid-liquid separation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27404386A JPS63130156A (en) | 1986-11-19 | 1986-11-19 | Solid-liquid separation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63130156A true JPS63130156A (en) | 1988-06-02 |
Family
ID=17536167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27404386A Pending JPS63130156A (en) | 1986-11-19 | 1986-11-19 | Solid-liquid separation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130156A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021058833A (en) * | 2019-10-04 | 2021-04-15 | 株式会社Ihi | Centrifugal separator and manufacturing method for centrifugal separator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5665649A (en) * | 1979-11-02 | 1981-06-03 | Toshiba Corp | Control apparatus of centrifugal dehydrator |
| JPS57187054A (en) * | 1981-04-24 | 1982-11-17 | Broadbent & Sons Ltd Thomas | Method of separating polyphase mixture |
| JPS60161759A (en) * | 1984-01-28 | 1985-08-23 | Masami Imakado | Centrifugal dehydration apparatus |
| JPS61238353A (en) * | 1985-04-15 | 1986-10-23 | Kurita Water Ind Ltd | Concentrator |
-
1986
- 1986-11-19 JP JP27404386A patent/JPS63130156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5665649A (en) * | 1979-11-02 | 1981-06-03 | Toshiba Corp | Control apparatus of centrifugal dehydrator |
| JPS57187054A (en) * | 1981-04-24 | 1982-11-17 | Broadbent & Sons Ltd Thomas | Method of separating polyphase mixture |
| JPS60161759A (en) * | 1984-01-28 | 1985-08-23 | Masami Imakado | Centrifugal dehydration apparatus |
| JPS61238353A (en) * | 1985-04-15 | 1986-10-23 | Kurita Water Ind Ltd | Concentrator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021058833A (en) * | 2019-10-04 | 2021-04-15 | 株式会社Ihi | Centrifugal separator and manufacturing method for centrifugal separator |
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