JP2003033916A - Method and device for separating solid and liquid of water-containing solid matter - Google Patents
Method and device for separating solid and liquid of water-containing solid matterInfo
- Publication number
- JP2003033916A JP2003033916A JP2001225892A JP2001225892A JP2003033916A JP 2003033916 A JP2003033916 A JP 2003033916A JP 2001225892 A JP2001225892 A JP 2001225892A JP 2001225892 A JP2001225892 A JP 2001225892A JP 2003033916 A JP2003033916 A JP 2003033916A
- Authority
- JP
- Japan
- Prior art keywords
- water
- solid
- separation column
- water content
- gas fluid
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Cyclones (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Drying Of Solid Materials (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、含水固形物からそ
の水分量を低減させて、低含水量に調整された固形物を
得るための固液分離方法およびその装置に関する。TECHNICAL FIELD The present invention relates to a solid-liquid separation method and apparatus for reducing the water content of a water-containing solid material to obtain a solid material adjusted to a low water content.
【０００２】[0002]
【発明の技術的背景】水分を多量に含む天然物や生産物
から水分を除去する乾燥操作は、あらゆる産業分野で行
われており、またその必要性も増加して来ていることか
ら、常に効率的な方法や装置が追求されている。BACKGROUND OF THE INVENTION Since the drying operation for removing water from natural products and products containing a large amount of water has been performed in all industrial fields and the need for it has been increasing, it has always been necessary. Efficient methods and devices are being pursued.
【０００３】プラスチック成形品の分野でその一例を挙
げると、現在、ポリエステルボトル（ＰＥＴボトル）の
ようなプラスチック廃棄物を再資源化する技術が開発さ
れ、実用化段階に入っているが、廃棄物は収集された
後、分別し粉砕してから水洗し、さらに乾燥を施して再
び希望する製品へと成形されている。ところが、プラス
チックを溶融成形する際に水分が十分に除去されていな
いと、ポリエステルのような樹脂では加水分解が起り、
他の樹脂では発泡現象が起る等の不具合が発生する。従
って、成形前に原料を十分に乾燥しないと、満足すべき
製品を製造することができない。乾燥工程の重要性は、
他の産業分野でも同様である。In the field of plastic molded products, for example, a technology for recycling plastic waste such as polyester bottles (PET bottles) is currently being developed and is in the stage of practical application. After being collected, it is sorted, crushed, washed with water, dried, and molded again into the desired product. However, when water is not sufficiently removed during melt molding of plastic, hydrolysis occurs in resins such as polyester,
Other resins cause problems such as foaming. Therefore, if the raw material is not sufficiently dried before molding, a satisfactory product cannot be manufactured. The importance of the drying process is
The same applies to other industrial fields.
【０００４】紛体を扱う工場では、前工程で製造された
水分を含む固形物を空気輸送して、熱風乾燥機や赤外線
乾燥機等へと供給する固形物の乾燥方法が、広く採用さ
れている。この方法は狭い敷地面積を活用する有効な方
法であるが、固形物に含まれる水分が多い時には乾燥機
にかかる負荷が大きくなることから、水分を含む固形物
を一旦遠心分離機や振動脱水機等に供給して水分を減ら
す工程が付加されている。それでもなお乾燥機の負荷を
小さくできない場合には、やむをえず大型乾燥機を使用
している。このような対応は他の産業分野でも行われて
おり、乾燥工程のより一層の合理化が要望されている。[0004] In a factory that handles powder, a method for drying solid matter, which is produced by a previous process and contains moisture, is pneumatically transported and supplied to a hot air dryer, an infrared dryer or the like is widely adopted. . This method is an effective method that utilizes a small lot area, but when the solids contain a large amount of water, the load on the dryer increases. Etc. to reduce the water content. If you still cannot reduce the load on the dryer, you will be forced to use a large dryer. Such measures have been taken in other industrial fields, and further rationalization of the drying process has been demanded.
【０００５】一方、環境保全技術の一つとして排ガス中
の塵を除くサイクロン集塵機が知られており、設備費と
運転費とが比較的安価であることから産業界では多く採
用されている。この装置では、排ガスを円錐型分離塔へ
送り込んで固体と気体へと分離し、固体を塔底部で捕集
し、気体を塔頂部から排出する方法がとられている。し
かし、この装置は、専ら固体と気体との分離に利用され
ており、生産物の乾燥工程へと応用した例は未だ知られ
ていない。On the other hand, a cyclone dust collector for removing dust in exhaust gas is known as one of environmental protection techniques, and is widely used in the industrial world because the facility cost and the operating cost are relatively low. In this apparatus, exhaust gas is sent to a conical separation column to separate it into solid and gas, the solid is collected at the bottom of the column, and the gas is discharged from the top of the column. However, this device is exclusively used for the separation of solid and gas, and its application to the drying process of the product has not been known yet.
【０００６】[0006]
【発明が解決しようとする課題】そこで本発明は、含水
固形物から水分を低減する効率的な方法、およびそのた
めの装置の提供を目的にする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an efficient method for reducing water content from hydrous solids and an apparatus therefor.
【０００７】[0007]
【課題を解決するための手段】すなわち本発明は、含水
固形物を含むガス流体を分離塔上部の円筒部からそのほ
ぼ接線方向に向かって供給し、そのガス流体を分離塔下
部の円錐部へと移動させることによって旋回流へと変
え、含水固形物に加わる遠心力によってそれから水分を
分離させて分離塔底部から排水し、一方含水量が低減さ
れた固形物のガス流体を分離塔頂部から送り出す含水固
形物の固液分離方法に関する。この分離方法は、特に廃
棄ポリエステル樹脂成形体の粉砕物から水分を低減させ
る方法として有効である。That is, according to the present invention, a gas fluid containing a water-containing solid is supplied from a cylindrical portion at the upper part of a separation column in a direction substantially tangential to the conical portion at the lower part of the separation column. It is converted into a swirl flow by moving the water, and the water is separated from the water by the centrifugal force applied to the water-containing solids and drained from the bottom of the separation tower, while the gas fluid of the solid with reduced water content is sent out from the top of the separation tower. The present invention relates to a solid-liquid separation method for water-containing solids. This separation method is particularly effective as a method for reducing water content from the pulverized product of the waste polyester resin molded product.
【０００８】また本発明は、円筒部とその下方に続く円
錐部とから構成された分離塔であって、その円筒部側壁
には含水固形物を含むガス流体をほぼ接線方向へと供給
可能な導入口が設けられており、分離塔内部にはその中
心軸に沿って分離塔頂部から分離塔底部に向かって下方
へと延びた内挿管が設置されており、分離塔底部には実
質的に水分のみを通すフィルターが着脱可能に取り付け
られた排水口が設けられており、そして分離塔頂部には
含水量が低減された固形物を含むガス流体を送り出す排
出口が内挿管に接続されている含水固形物の固液分離装
置に関する。Further, the present invention is a separation column composed of a cylindrical portion and a conical portion which follows the cylindrical portion, and a gas fluid containing a water-containing solid substance can be supplied substantially tangentially to the side wall of the cylindrical portion. An inlet is provided, and inside the separation column, an insertion pipe extending downward along the central axis from the top of the separation column toward the bottom of the separation column is installed, and substantially at the bottom of the separation column. There is a drainage port to which a filter that allows only water to pass is attached detachably, and a discharge port that sends out a gas fluid containing solid matter with a reduced water content is connected to an insertion tube at the top of the separation column. The present invention relates to a solid-liquid separation device for water-containing solids.
【０００９】この固液分離装置には、さらに、含水固形
物のガス搬送ライン、および含水量が低減された固形物
を分離回収するラインとをそれぞれ前後に接続すると、
含水固形物の含水量を低減する効率的な装置として利用
することができる。The solid-liquid separation device is further connected to a gas conveying line for water-containing solids and a line for separating and recovering solids having a reduced water content, respectively.
It can be used as an efficient device for reducing the water content of water-containing solids.
【００１０】[0010]
【発明の具体的説明】次に、本発明に係わる含水固形物
の固液分離方法および固液分離装置について、より詳細
に説明する。DETAILED DESCRIPTION OF THE INVENTION Next, the solid-liquid separation method and the solid-liquid separation apparatus for a water-containing solid according to the present invention will be described in more detail.
【００１１】固 液 分 離 方 法
本発明の固液分離方法は、含水固形物を含むガス流体を
高速で分離塔へ供給して旋回流となし、その含水固形物
に遠心力を加えることによって水分を分離し、含水量が
低減された固形物を得る方法である。[0011] Solid-liquid separation process of the solid-liquid fraction away how the present invention, the water solids supplied to the swirling flow and without in the separation column fast gas stream containing, by adding a centrifugal force to the water-containing solid It is a method of separating water to obtain a solid matter having a reduced water content.
【００１２】含水固形物としては、ガス流体輸送可能な
比重と形状とを有し、また水分が加熱乾燥等の手段で除
去可能な状態で含有されている固形物であれば、有機物
であっても無機物であってもよい。例えば、樹脂成形体
の粉砕物は、比較的に低比重であってガス流体輸送可能
であり、かつ表面に付着した水分であることから加熱乾
燥等の手段で除去可能であることから、好適に本発明を
適用することができる。特に、ポリエステル樹脂のよう
に水によって加水分解されやすい樹脂の場合には、十分
に水分を除去しておかないと溶融成形できないことか
ら、細かいフレーク状ないし紛体へと形状を調整した
後、本発明による固液分離方法を適用すると、空気搬送
が容易であって、かつそれに含まれる含水量を容易に低
減することができる。The water-containing solid matter is an organic matter as long as it is a solid matter having a specific gravity and a shape capable of transporting a gas fluid and containing water in a state of being removable by means such as heating and drying. May be an inorganic substance. For example, a pulverized product of a resin molded product is suitable because it has a relatively low specific gravity and can be transported by gas fluid, and since it is water adhering to the surface, it can be removed by means such as heating and drying. The present invention can be applied. In particular, in the case of a resin that is easily hydrolyzed by water, such as a polyester resin, it cannot be melt-molded unless water is sufficiently removed. Therefore, after adjusting the shape into fine flakes or powder, the present invention By applying the solid-liquid separation method according to (4), air can be easily transported and the water content contained therein can be easily reduced.
【００１３】まず、前記した含水固形物を高速ガスに混
合したガス流体を、分離塔上部の円筒部からそのほぼ接
線方向に向かって供給する。分離塔内に入ったガス流体
は、円筒部から円錐部へと移動するが、その間に分離塔
壁面に沿って流れる旋回流へと変わる。この時、含水固
形物には遠心力が作用して一部の水分を分離させ、水分
と含水量が低減された固形物とに分かれる。分離された
水分は、分離塔の壁面に沿って流れ落ちて分離塔底部か
ら外部へと排出される。一方、含水量が低減された固形
物は、分離塔頂部から高速ガスと共に送り出される。First, a gas fluid prepared by mixing the above-mentioned water-containing solid matter with a high-speed gas is supplied from the cylindrical portion at the upper part of the separation column in a direction substantially tangential thereto. The gas fluid that has entered the separation column moves from the cylindrical portion to the conical portion, but during that time, it changes into a swirling flow that flows along the wall surface of the separation column. At this time, a centrifugal force acts on the water-containing solid substance to separate a part of water, and the water-containing solid substance is separated into water and a solid substance having a reduced water content. The separated water flows down along the wall surface of the separation tower and is discharged to the outside from the bottom of the separation tower. On the other hand, the solid matter with a reduced water content is sent out from the top of the separation column together with the high-speed gas.
【００１４】この方法によれば、含水固形物に含まれる
水分の量と状態、あるいは供給ガス流体の流速や含水固
形物の供給量、さらには分離塔内での滞留時間等の条件
によって除去される水分の割合は異なってくるが、おお
よそ初期の５０％以上もの水分を除去することができる
ので、含水率を大幅に低下させることができる。従っ
て、従来の乾燥工程の前にこの固液分離方法を併用する
と、低減された水分の量だけ乾燥機にかかる負荷を小さ
くすることができ、また効率よく乾燥させることができ
る。According to this method, the amount and state of water contained in the water-containing solid matter, the flow velocity of the feed gas fluid, the amount of the water-containing solid matter supplied, and the conditions such as the residence time in the separation column are removed. Although the proportion of water content varies, approximately 50% or more of the initial water content can be removed, so that the water content can be significantly reduced. Therefore, if this solid-liquid separation method is used together before the conventional drying step, the load on the dryer can be reduced by the reduced amount of water and the drying can be performed efficiently.
【００１５】この固液分離方法は、含水固形物の含水率
を低減させる方法であって、前記した多量の水分を付着
した樹脂成形体粉砕物からの固液分離方法として有効で
あるばかりでなく、パルプ中の水分を分離する固液分離
方法としても利用でき、さらに例えば、晶析塩、砂、粉
炭、鉱石粉砕品からその含水率を低減する固液分離方法
としても採用することができる。This solid-liquid separation method is a method of reducing the water content of a water-containing solid, and is not only effective as a solid-liquid separation method from the above-mentioned crushed resin molded product to which a large amount of water has adhered. It can also be used as a solid-liquid separation method for separating water in pulp, and can also be adopted as a solid-liquid separation method for reducing the water content of crystallization salt, sand, pulverized coal, or ground ore products.
【００１６】固 液 分 離 装 置
次に本発明に係わる固液分離装置の一例を図面を参照し
て説明する。図１は、固液分離装置を正面から見たとき
の概略断面図である。[0016] will be described with reference to the drawings of an example of a solid-liquid separation device according to the solid-liquid separation away equipment then present invention. FIG. 1 is a schematic cross-sectional view of the solid-liquid separation device when viewed from the front.
【００１７】分離塔１は、円筒部１１、およびその下端
に接続しかつ下方に収束した形状の円錐部１２とから構
成されている。円筒部１１の上端は閉鎖されて分離塔頂
部を形成し、また円錐部１２の下端は外部へ通じる開口
になって排水口１７を形成している。円筒部１１の側部
には、含水固形物を含むガス流体を分離塔内へ高速で供
給可能な導入口１４が、円筒部のほぼ接線方向に向かっ
て併設されている。The separation tower 1 is composed of a cylindrical portion 11 and a conical portion 12 connected to the lower end of the cylindrical portion 11 and converging downward. The upper end of the cylindrical portion 11 is closed to form the top of the separation column, and the lower end of the conical portion 12 is an opening leading to the outside to form a drainage port 17. An inlet port 14 capable of supplying a gas fluid containing a water-containing solid substance into the separation column at a high speed is provided side by side in the cylindrical portion 11 substantially in the tangential direction of the cylindrical portion.
【００１８】また、分離塔１の内部には、その中心軸に
沿って分離塔頂部から分離塔底部へと向かって下方に延
びた内挿管１５が設置されている。その内挿管１５の下
端は開口してガス流体の入口になっており、またその上
端は含水量の低減された固形物がガス流体と共に送り出
される排出口１６に接続している。さらに、円錐部１２
の底部に形成された排水口１７には、着脱可能なフィル
ター１８が取り付けられている。そのフィルター１８
は、分離した水分は排出するが、固形物は排出しない程
度の開孔度を有した材料で形成されており、例えば、ろ
紙、ろ布、金属メッシュ、パンチングプレート等が使用
されている。Further, inside the separation column 1, an insertion pipe 15 is installed extending downward along the central axis thereof from the top of the separation column toward the bottom of the separation column. The lower end of the insertion tube 15 is opened to serve as an inlet for gas fluid, and the upper end thereof is connected to a discharge port 16 through which a solid substance having a reduced water content is sent out together with the gas fluid. Further, the conical portion 12
A removable filter 18 is attached to the drain port 17 formed at the bottom of the. The filter 18
Is formed of a material having a porosity such that separated water is discharged but solid matter is not discharged. For example, filter paper, filter cloth, metal mesh, punching plate and the like are used.
【００１９】含水固形物を含むガス流体の流れは、図１
に矢印を付した点線で示したように、導入口１４から円
筒部１１のほぼ接線方向へと高速で供給され、分離塔１
内部へと導入される。そのガス流体は、分離塔内で旋回
流に変わってラセン状に下降し、その後円錐部１２の下
方で反転して上昇流に変り、内挿管１５を通って排出口
１６から送り出される。このガス流体の流れの中で、ガ
ス流体中の含水固形物には遠心力が加わって水分が分離
され、分離されてきた水分が円錐部１２の壁面に沿って
流れ落ち、排水口１７に取り付けられたフィルター１８
を通過して、分離水２２として外部へと排出される。The flow of gas fluid containing hydrous solids is shown in FIG.
As indicated by a dotted line with an arrow mark, the gas is supplied from the inlet 14 at a high speed in a substantially tangential direction of the cylindrical portion 11, and the separation column 1
It is introduced inside. The gas fluid changes to a swirling flow in the separation column and descends in a spiral shape, then reverses below the conical portion 12 to change to an ascending flow, and is discharged from the discharge port 16 through the insertion tube 15. In the flow of the gas fluid, a centrifugal force is applied to the water-containing solid matter in the gas fluid to separate the water, and the separated water flows down along the wall surface of the conical portion 12 and is attached to the drainage port 17. Filter 18
And is discharged to the outside as separated water 22.
【００２０】装置の運転初期には、固形物の一部が円錐
部１２の底部排水口１７近辺に集まることもあるが、フ
ィルター１８が設置されているので堆積紛体層２３を形
成して外部へと排出されることはほとんどない。その後
運転が順調に進めば、分離塔１へ連続的に供給される含
水固形物からは分離水２２が除かれ、含水量が低減され
た固形物を含むガス流体２４は上昇旋回流にのって内挿
管１５内を上昇し、排出口１６から送り出される。At the beginning of the operation of the apparatus, some solids may collect near the bottom drainage port 17 of the conical portion 12, but since the filter 18 is installed, the accumulated powder layer 23 is formed to the outside. Is rarely emitted. If the operation proceeds satisfactorily thereafter, the separated water 22 is removed from the water-containing solid matter continuously supplied to the separation tower 1, and the gas fluid 24 containing the solid matter having a reduced water content is in an upward swirling flow. As a result, it rises in the inner insertion tube 15 and is discharged from the discharge port 16.
【００２１】この装置において、導入口１４から供給さ
れるガスの流速、そのガス中に含まれる含水固形物の濃
度、分離塔１の高さと直径、および内挿管１５の長さと
直径等の設計値を最適値に調整することによって、送り
出される含水量が低減された固形物中に含まれる水分の
量を調整することができる。In this apparatus, design values such as the flow velocity of the gas supplied from the inlet 14, the concentration of the water-containing solids contained in the gas, the height and diameter of the separation tower 1, the length and diameter of the insertion tube 15, etc. By adjusting to the optimum value, it is possible to adjust the amount of water contained in the solid matter having a reduced water content sent out.
【００２２】図２は、図１に示した固液分離装置に、そ
の前後の工程を組み込んだ固液分離装置全体の構成を示
す一概念図である。図２では、図１に示した分離塔１の
導入口１４に含水固形物を含むガス流体を供給するガス
搬送ライン３が接続され、また分離塔１の排出口１６に
含水量が低減された固形物を含むガス流体を分離機等へ
と供給する固形物回収ライン４が接続されている。ガス
搬送ライン３は、前工程で製造された含水固形物を供給
する装置と送風機とから構成されており、固形物回収ラ
イン４は、含水量が低減された固形物とガスとに分離す
る分離機、必要に応じて乾燥機等から構成されている。
このような一連の装置を組み立てると、ガス搬送ライン
３から供給されてきた含水固形物は、本発明に係わる固
液分離装置で含水量が低減された固形物へと変化して固
形物回収ラインへと送られるので、後続する乾燥機にか
かる負荷を小さくすることができる。FIG. 2 is a conceptual diagram showing the overall structure of the solid-liquid separation device in which the steps before and after the solid-liquid separation device shown in FIG. 1 are incorporated. In FIG. 2, the gas transfer line 3 for supplying a gas fluid containing a water-containing solid is connected to the inlet 14 of the separation tower 1 shown in FIG. 1, and the water content is reduced to the outlet 16 of the separation tower 1. A solids recovery line 4 for supplying a gas fluid containing solids to a separator or the like is connected. The gas transfer line 3 is composed of a device for supplying the water-containing solid matter produced in the previous step and an air blower, and the solid matter recovery line 4 separates the water-reduced solid matter and the gas. And a dryer if necessary.
When such a series of devices are assembled, the water-containing solid matter supplied from the gas transfer line 3 is changed into a solid matter having a reduced water content in the solid-liquid separation device according to the present invention, and the solid matter recovery line. Therefore, the load on the subsequent dryer can be reduced.
【００２３】次に、含水固形物の一例として樹脂成形体
粉砕物を使用し、それに乾燥操作を加える固液分離装置
について図２を参照して説明する。Next, a solid-liquid separation device in which a crushed resin molded product is used as an example of a water-containing solid and a drying operation is performed on the crushed resin molded product will be described with reference to FIG.
【００２４】使用済みの樹脂成形体を小さいフレーク状
ないし粉末状へと粉砕してから多量の水中へと移して水
洗し、その水スラリー３５を分離機３１へと送ると、メ
ッシュ３２によって多量の水３７が脱水される。次に、
分離され、未だ水分を多く付着させている樹脂成形体粉
砕物３６をホッパー３４へと供給し、ここで送風機３３
から送られる空気３８と混合すると、含水樹脂成形体粉
砕物を含む空気流２１になる。この空気流２１を、高速
で分離塔１の導入口１４へと供給する。When the used resin molding is crushed into small flakes or powder, it is transferred into a large amount of water and washed with water, and the water slurry 35 is sent to the separator 31. The water 37 is dehydrated. next,
The crushed resin molded product 36, which has been separated and still has a large amount of water attached, is supplied to the hopper 34, where the blower 33
When mixed with the air 38 sent from, the air stream 21 containing the pulverized product of the water-containing resin molded product is formed. This air stream 21 is supplied at high speed to the inlet 14 of the separation column 1.
【００２５】分離塔１へ送り込まれた含水量の高い樹脂
成形体粉砕物２１は、それに付着した水分２２が分離塔
底部の排水口１７から排出され、また含水量の低減され
た樹脂成形体粉砕物を含む空気流２４が分離塔１の頂部
排出口１６から送り出され、別の分離塔４１へと送り込
まれる。この別の分離塔４１では、その頂部から空気流
４３が排気され、その底部から含水量の低減された樹脂
成形体粉砕物４４が排出され、次の熱風乾燥機４２へと
送られる。熱風乾燥機４２では、その底部から供給され
る熱風４５によって、含水量の低減された樹脂成形体粉
砕物４４からさらに水分が除去され、乾燥された樹脂成
形体粉砕物４６が外部へと排出回収される。In the crushed resin molded product 21 having a high water content sent to the separation tower 1, the moisture 22 adhering to the crushed resin molded product 21 is discharged from the drainage port 17 at the bottom of the separation tower, and the crushed resin molded product having a reduced water content. An air stream 24 containing matter is delivered from the top outlet 16 of the separation column 1 and into another separation column 41. In this separate separation column 41, the air flow 43 is exhausted from the top part thereof, and the crushed resin molded product 44 having a reduced water content is discharged from the bottom part thereof and sent to the next hot air dryer 42. In the hot-air dryer 42, the hot air 45 supplied from the bottom part further removes water from the resin molded product pulverized product 44 having a reduced water content, and the dried resin molded product pulverized product 46 is discharged and collected to the outside. To be done.
【００２６】[0026]
【実施例】分別収集されたＰＥＴボトルを機械粉砕し、
水洗してから脱水することによって、大きさが１〜２ｍ
ｍのフレーク状物を得た。この含水率４０％のフレーク
状物を図２に示したガス搬送ラインへ供給して空気搬送
し、図１に示した固液分離装置の導入口へと供給した。
固液分離装置の排出口からは含水率８％のフレーク状物
を回収することができた。次いで、図２に示した分離機
および熱風乾燥機を用いて前記のフレークを乾燥させた
ところ、含水率を０．５％まで減らすことができた。[Examples] Separately collected PET bottles were mechanically crushed,
By washing with water and dehydration, the size is 1-2 m
m flakes were obtained. The flakes having a water content of 40% were supplied to the gas transfer line shown in FIG. 2 for air transfer and then supplied to the inlet of the solid-liquid separator shown in FIG.
Flakes with a water content of 8% could be recovered from the outlet of the solid-liquid separator. Next, when the flakes were dried using the separator and the hot air dryer shown in FIG. 2, the water content could be reduced to 0.5%.
【００２７】[0027]
【発明の効果】本発明に係わる固液分離方法によると、
固形物の含水率を効率よく低減させることができる。従
って、本発明は、紛体や粒体一般からの水分低減に高い
効果を発揮するばかりでなく、ＰＥＴボトルをはじめと
した廃棄プラスチックの再資源化技術の一環として、ま
たパルプ中の水分低減方法としても利用可能な方法であ
る。According to the solid-liquid separation method of the present invention,
The water content of the solid matter can be efficiently reduced. Therefore, the present invention not only exerts a high effect in reducing water content from powders and granules in general, but also as a part of recycling technology for waste plastics such as PET bottles, and as a method for reducing water content in pulp. Is also an available method.
【００２８】また、本発明に係わる固液分離装置は、構
造の簡単な装置であって、かつ運転も容易であって、大
量の含水固形物から連続的に水分を除去し、固形物中の
含水率を低減させることができる。この固液分離装置
は、従来の乾燥工程の一部である空気搬送段階に組み入
れることができ、それによって引き続く乾燥機の負荷を
小さくすることができ、乾燥機を小型化することができ
る。The solid-liquid separator according to the present invention has a simple structure and is easy to operate. It continuously removes water from a large amount of water-containing solids to remove solids contained in the solids. The water content can be reduced. This solid-liquid separation device can be incorporated into the air-conveying stage that is part of the conventional drying process, which can reduce the load on the subsequent dryer and downsize the dryer.
【図１】 本発明に係わる固液分離装置の一例を示す
概略断面図である。FIG. 1 is a schematic cross-sectional view showing an example of a solid-liquid separation device according to the present invention.
【図２】 本発明に係わる固液分離装置を組み込んだ
固液分離装置全体を示す一概念図である。FIG. 2 is a conceptual diagram showing an entire solid-liquid separator incorporating the solid-liquid separator according to the present invention.
１ 分離塔 １１ 円筒部 １２ 円錐部 １４ 導入口 １５ 内挿管 １６ 排出口 １７ 排水口 １８ フィルター ２１ 高含水固形物を含むガス流体 ２２ 分離水 ２４ 低含水固形物を含むガス流体 ３ ガス搬送ライン ４ 固形物回収ライン 1 separation tower 11 cylindrical part 12 cone 14 Inlet 15 Intubation 16 outlet 17 drain 18 filters 21 Gas fluid containing high water content solids 22 Separation water 24 Gas fluid containing low water content solids 3 gas transfer line 4 Solids recovery line
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２９Ｋ 67:00 Ｂ２９Ｋ 67:00 Ｆターム(参考） 3L113 AA07 AB08 AC51 AC67 BA01 DA01 4D031 AC04 BA07 4D053 AA01 AB01 BA01 BB02 BC01 BD04 CA01 CB05 CD01 CD21 4F201 AA24 AA50 BA04 BC02 BC12 BC17 BC25 BC33 BN22 BQ04 BQ21 BQ44 4F301 AA25 BE22 BF31 BG21 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) // B29K 67:00 B29K 67:00 F term (reference) 3L113 AA07 AB08 AC51 AC67 BA01 DA01 4D031 AC04 BA07 4D053 AA01 AB01 BA01 BB02 BC01 BD04 CA01 CB05 CD01 CD21 4F201 AA24 AA50 BA04 BC02 BC12 BC17 BC25 BC33 BN22 BQ04 BQ21 BQ44 4F301 AA25 BE22 BF31 BG21
Claims (4)
円筒部からそのほぼ接線方向に向かって供給し、そのガ
ス流体を分離塔下部の円錐部へと移動させることによっ
て旋回流へと変え、含水固形物に加わる遠心力によって
それから水分を分離させて分離塔底部から排水し、一方
含水量が低減された固形物のガス流体を分離塔頂部から
送り出すことを特徴とする含水固形物の固液分離方法。1. A swirl flow is formed by supplying a gas fluid containing a water-containing solid from a cylindrical portion at the upper part of a separation column in a direction substantially tangential to the gas fluid and moving the gas fluid to a conical portion at the lower part of the separation column. Alternatively, the water content is separated from the water content by centrifugal force applied to the water content solid matter and drained from the bottom of the separation column, while the gas fluid of the solid content water content is discharged from the top of the separation column. Solid-liquid separation method.
の粉砕物であることを特徴とする請求項１に記載の含水
固形物の固液分離方法。2. The solid-liquid separation method for a water-containing solid according to claim 1, wherein the solid is a pulverized product of a polyester resin molded product.
された分離塔であって、その円筒部側壁には含水固形物
を含むガス流体をほぼ接線方向へと供給可能な導入口が
設けられており、分離塔内部にはその中心軸に沿って分
離塔頂部から分離塔底部に向かって下方へと延びた内挿
管が設置されており、分離塔底部には実質的に水分のみ
を通すフィルターが着脱可能に取り付けられた排水口が
設けられており、そして分離塔頂部には含水量が低減さ
れた固形物を含むガス流体を送り出す排出口が内挿管に
接続されていることを特徴とする含水固形物の固液分離
装置。3. A separation column composed of a cylindrical portion and a conical portion which follows the cylindrical portion, wherein the side wall of the cylindrical portion is provided with an inlet port capable of supplying a gas fluid containing a water-containing solid in a substantially tangential direction. The inside of the separation column is provided with an insertion tube extending downward from the top of the separation column toward the bottom of the separation column along the central axis of the separation column. It is characterized by a drainage port to which a filter that passes through is detachably attached, and a discharge port that sends out a gas fluid containing solid matter with a reduced water content is connected to an insertion tube at the top of the separation column. Solid-liquid separation device for water-containing solids.
前記の導入口には含水固形物を供給する装置と送風機と
から構成されたガス搬送ラインが接続されており、また
前記の排出口には含水量が低減された固形物とガスとに
分離するための分離機を含む固形物回収ラインが接続さ
れていることを特徴とする含水固形物の固液分離装置。4. The solid-liquid separation device according to claim 3, further comprising a gas transfer line connected to the inlet with a device for supplying a water-containing solid matter and a blower, and A solid-liquid separation apparatus for water-containing solids, characterized in that the discharge port is connected to a solids recovery line including a separator for separating the water-reduced solids and gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001225892A JP2003033916A (en) | 2001-07-26 | 2001-07-26 | Method and device for separating solid and liquid of water-containing solid matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001225892A JP2003033916A (en) | 2001-07-26 | 2001-07-26 | Method and device for separating solid and liquid of water-containing solid matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003033916A true JP2003033916A (en) | 2003-02-04 |
Family
ID=19058811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001225892A Pending JP2003033916A (en) | 2001-07-26 | 2001-07-26 | Method and device for separating solid and liquid of water-containing solid matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003033916A (en) |
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