JPH0671493A - Dehydration treatment device for hydrous material - Google Patents
Dehydration treatment device for hydrous materialInfo
- Publication number
- JPH0671493A JPH0671493A JP4158915A JP15891592A JPH0671493A JP H0671493 A JPH0671493 A JP H0671493A JP 4158915 A JP4158915 A JP 4158915A JP 15891592 A JP15891592 A JP 15891592A JP H0671493 A JPH0671493 A JP H0671493A
- Authority
- JP
- Japan
- Prior art keywords
- water
- belt
- absorbent
- belts
- resin
- 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.)
- Granted
Links
- 208000005156 Dehydration Diseases 0.000 title claims abstract description 24
- 230000018044 dehydration Effects 0.000 title claims abstract description 24
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000002250 absorbent Substances 0.000 claims abstract description 114
- 229920005989 resin Polymers 0.000 claims abstract description 84
- 239000011347 resin Substances 0.000 claims abstract description 84
- 239000004744 fabric Substances 0.000 claims abstract description 24
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract 2
- 239000000126 substance Substances 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 abstract description 39
- 239000000835 fiber Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 11
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 238000003795 desorption Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000009941 weaving Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 6
- 229920000578 graft copolymer Polymers 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920000609 methyl cellulose Polymers 0.000 description 2
- 239000001923 methylcellulose Substances 0.000 description 2
- 235000010981 methylcellulose Nutrition 0.000 description 2
- 229920002432 poly(vinyl methyl ether) polymer Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- PEXNXOXCZLFQAO-ODZAUARKSA-N (z)-but-2-enedioic acid;ethenyl acetate Chemical compound CC(=O)OC=C.OC(=O)\C=C/C(O)=O PEXNXOXCZLFQAO-ODZAUARKSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- CYKDLUMZOVATFT-UHFFFAOYSA-N ethenyl acetate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=O)OC=C CYKDLUMZOVATFT-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、圧搾ロールにて搾り出
された水分を吸水性ベルトに吸収させる含水物の脱水処
理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehydration treatment apparatus for a water-containing substance which allows a water-absorbent belt to absorb the water squeezed by a squeezing roll.
【０００２】[0002]
【従来の技術】複数のロールに掛装され少なくとも部分
的に対向して走行可能とされた上下ろ布ベルトの外側に
１枚または２枚の毛細管吸水力を利用したフェルト（不
織布）やスポンジ状ベルトを吸水性ベルトとして装着し
た脱水装置や、ろ布ベルトそのものを吸水性のフェルト
やスポンジ状ベルトに置き換えた脱水装置などがある。2. Description of the Related Art One or two felts (nonwoven fabrics) or sponge-like ones utilizing a capillary water absorption force are provided on the outer side of an upper and lower filter cloth belt which is wound around a plurality of rolls and can run at least partially opposite to each other. There is a dehydrator equipped with a belt as a water absorbent belt, and a dehydrator in which the filter cloth belt itself is replaced with a water absorbent felt or sponge belt.
【０００３】具体的には、上下ろ布ベルトの外側に２枚
のスポンジ状ベルトを吸水性ベルトとして装着した脱水
装置が特公昭５６−１５２９３号公報に提案されてい
る。該脱水装置の主要脱水部は、対面してそれぞれ独立
して駆動されるが相互に同期性を保って走行する、挟持
される被脱水物からみて、エンドレスのろ布ベルト、ス
ポンジ状吸水ベルトおよび多孔板状のスラットコンベア
からなり、ろ布ベルトの間に被脱水物を挟持して、被脱
水物を搬送しつつ、多孔板状のスラットコンベア側から
加圧して脱水するものである。ここで、加圧脱水された
水はスポンジ状ベルトに保持されるのではなく受け皿に
流出される。Specifically, Japanese Patent Publication No. 56-15293 proposes a dewatering device in which two sponge belts are mounted as water-absorbing belts on the outside of the upper and lower filter cloth belts. The main dewatering section of the dewatering device is driven independently of each other, and runs independently of each other, but runs in synchronization with each other. Endless filter cloth belts, sponge-like water absorption belts and It is composed of a perforated plate-shaped slat conveyor, and the dehydrated material is sandwiched between filter cloth belts, and the dehydrated material is conveyed while being pressed to dehydrate it. Here, the water that has been dehydrated under pressure is not held by the sponge belt but flows out to the tray.
【０００４】上記特公昭５６−１５２９３号公報の例か
らわかるように、従来の脱水装置では吸水性ベルトとし
てフェルトやスポンジ状ベルトを使用しているが、これ
らベルトは毛細管作用による吸水力を利用したベルトで
あるため、いったん水分を吸収しても圧力がかかると再
び水分を放出し含水物に水分を戻してしまうという欠点
があり、従って圧力をかけて水分を搾り出しながらその
水分を吸収除去させることは原理的に不可能であり、そ
のため吸水性ベルトを使用しても脱水効果が充分に発揮
されないというのが現状であった。As can be seen from the example of Japanese Patent Publication No. 56-15293, the felts and sponge belts are used as water absorbent belts in the conventional dewatering device, but these belts utilize the water absorbing force by the capillary action. Since it is a belt, it has the drawback that once it absorbs water, it will be released again when pressure is applied and will return to the water-containing material. Therefore, it is necessary to absorb the water while squeezing the water out by applying pressure. In principle, this is impossible, and therefore, even if a water-absorbent belt is used, the dehydration effect cannot be sufficiently exerted.
【０００５】また、特開昭６３−１４０２８１号公報に
は、対向して周回する１対のコンベアーベルトの表面に
吸水性高分子化合物を付着させ、吸水性高分子化合物を
被吸水物質と接触させることにより水切りする方法が示
されている。ここで開示された水切り作用は、吸水性樹
脂（高分子化合物）の化学的作用に基づく脱水対象物と
の直接接触による水分除去であり、水分除去に関して物
理的な力の作用は寄与していない。従って上記公報に開
示された方法を本願に適用しても充分な脱水効果は発揮
されない。特に、有機性汚泥を脱水する工程に適用した
場合には、吸水性ベルトの吸水性高分子化合物面に汚泥
が付着することが予想され、付着した汚泥をスクレーパ
等で剥離しようとすると吸水性高分子化合物の強度から
して高分子化合物がスクレーパにより削り取られるので
実用的でないなどの問題がある。Further, in Japanese Patent Laid-Open No. 63-140281, a water-absorbing polymer compound is attached to the surface of a pair of conveyor belts that circulate facing each other, and the water-absorbing polymer compound is brought into contact with a substance to be absorbed. The method of draining water is shown by this. The draining action disclosed here is water removal by direct contact with an object to be dehydrated based on the chemical action of the water-absorbent resin (polymer compound), and the action of physical force does not contribute to the removal of water. . Therefore, even if the method disclosed in the above publication is applied to the present application, a sufficient dehydrating effect is not exhibited. In particular, when applied to the process of dehydrating organic sludge, it is expected that the sludge will adhere to the surface of the water-absorbing polymer compound of the water-absorbing belt. Due to the strength of the molecular compound, the polymer compound is scraped off by the scraper, which is not practical.
【０００６】[0006]
【発明が解決しようとする課題】本発明の課題は、従来
の脱水処理装置の上記諸欠点をすべて解消できる新規脱
水処理装置を提供するものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a new dehydration treatment apparatus capable of solving all the above-mentioned drawbacks of the conventional dehydration treatment apparatus.
【０００７】[0007]
【課題を解決するための手段】上記問題点は本発明の脱
水処理装置によって解決される。すなわち、少なくとも
１本の圧搾ロールを含む複数のロールに掛装し、少なく
とも部分的に対向して走行可能とされた上下ろ布ベルト
の外側に１枚または１組以上の吸水性樹脂を有する吸水
性ベルトを装着し、前記圧搾ロールにて搾り出された水
分を該吸水性ベルトに吸収させるようにしたことを特徴
とする含水物の脱水処理装置である。The above problems can be solved by the dehydration treatment apparatus of the present invention. That is, the water-absorbing material having one or more sets of water-absorbent resin on the outer side of the upper and lower filter cloth belts that are hung on a plurality of rolls including at least one squeezing roll and are capable of running at least partially opposite each other. A dehydrating apparatus for water-containing substances, characterized in that a water-absorbing belt absorbs water squeezed by the pressing roll.
【０００８】上記本発明の脱水処理装置が従来の脱水処
理装置に対して特に特徴とするところは、複数のロール
群のうち少なくとも１本は含水物中の水分を搾り出す機
能を有する圧搾ロールであり、さらに圧搾ロールにより
含水物中の水分を搾り出す部分に吸水性ベルトが存在す
ることにある。The dewatering apparatus of the present invention is particularly characterized in that it is a squeezing roll having a function of squeezing out water in a water-containing material. In addition, the water-absorbent belt is present at the portion where water in the water-containing material is squeezed out by the pressing roll.
【０００９】本発明の脱水処理装置に使用される吸水性
樹脂を有する吸水性ベルトは以下の方法によって製作さ
れるベルトである。 （１）加圧により容易に離水することのない吸水性樹脂
を走行ベルトの表面にコーティングしたベルト、または
吸水性樹脂を種々の形状に成形したものを走行ベルトに
埋め込んだベルト。 （２）加圧により容易に離水することのない吸水性樹脂
を袋状ベルトの内部に充填したベルト （３）加圧により容易に離水することのない吸水性樹脂
を繊維状に加工し、織布したベルト、不織布にしたベル
トあるいは基布に植毛したベルト 本発明の脱水処理装置には少なくとも１枚の吸水性ベル
トが存在することが必須であるが、２枚以上存在しても
よく、それらが上記（１）〜（３）のうちの異なった方
法で製作された吸水性ベルトであっても良い。A water-absorbent belt having a water-absorbent resin used in the dehydration treatment apparatus of the present invention is a belt manufactured by the following method. (1) A belt in which a surface of a running belt is coated with a water-absorbent resin that does not easily release water under pressure, or a belt in which a water-absorbent resin molded into various shapes is embedded in the running belt. (2) A belt in which a water-absorbent resin that does not easily release water by pressure is filled inside a bag-shaped belt (3) A water-absorbent resin that does not easily release water by pressure is processed into a fibrous shape and woven A belt made of cloth, a belt made of non-woven cloth, or a belt made to be flocked to a base cloth. It is essential that at least one water absorbing belt is present in the dehydrating apparatus of the present invention, but two or more water absorbing belts may be present. May be a water-absorbent belt manufactured by a different method from the above (1) to (3).
【００１０】上記加圧により容易に離水することのない
という意味は、例えば相対向する１対の圧搾ロールによ
って吸水性ベルト内の吸水した吸水性樹脂がうける圧力
が５０ｋｇ／ｃｍ2 程度であっても吸水した吸水性樹脂
から離水することはないという意味である。The meaning that water is not easily released by the above-mentioned pressurization means that the water-absorbent resin absorbed in the water-absorbent belt by a pair of squeezing rolls facing each other has a pressure of about 50 kg / cm 2. Also means that water is not released from the water-absorbent resin that has absorbed water.
【００１１】本発明の脱水処理装置によれば、従来のス
ポンジやフェルトからなる吸水性ベルトを使用した場合
のように加圧によりいったん吸収された水は容易に離水
されることはなく、また圧力のかかった状態で水分を吸
収させることが可能となったため、複数個の圧搾ロール
に吸水性ベルトを掛装しても吸水性ベルトに保有された
水が吐きだされて再び含水物に水分が戻るという懸念は
なくなり、また単数個の圧搾ロールであっても圧力のか
かる側に吸水性ベルトを掛装することができるようにな
ったため、従来より飛躍的に脱水率を高めることが可能
となった。According to the dewatering apparatus of the present invention, the water once absorbed by the pressurization is not easily released, unlike the case where the conventional water absorbent belt made of sponge or felt is used, and the pressure is not applied. Since it is possible to absorb water in a wet state, even if the water-absorbent belt is hung on a plurality of squeezing rolls, the water held in the water-absorbent belt is discharged and the water-containing material is rehydrated. There is no need to worry about returning, and even with a single squeezing roll, it is possible to hang a water-absorbent belt on the side where pressure is applied, making it possible to dramatically increase the dehydration rate compared to the past. It was
【００１２】また、含水物と吸水性ベルトとは間接接触
であるので含水物がろ布ベルトに付着しスクレーパを用
いて付着した含水物を除去してもスクレーパはろ布ベル
トと接触することになるため前記吸水樹脂を損傷するこ
となく処理可能となった。該吸水性ベルトに装備された
吸水性樹脂は自重の１０〜１０００倍の吸水能力がある
が、いずれは飽和状態になるので、その都度ベルトを交
換するか、または吸水性樹脂の再生装置を吸水性ベルト
の中間部に設けベルトを再生使用することもできる。Further, since the water-containing material and the water-absorbent belt are in indirect contact with each other, the water-containing material adheres to the filter cloth belt, and even if the adhered water-containing material is removed using a scraper, the scraper comes into contact with the filter cloth belt. Therefore, the water-absorbent resin can be treated without damage. The water-absorbent resin equipped on the water-absorbent belt has a water-absorbing capacity of 10 to 1000 times its own weight, but since it eventually becomes saturated, the belt is replaced each time, or the water-absorbent resin regeneration device absorbs water. The belt can be reused by providing it in the middle of the sex belt.
【００１３】吸水性樹脂の種類としては、メチルセルロ
ース、ポリビニールメチルエーテル、ポリエチレンオキ
サイド、ポリ−Ｎ−ジアルキルアクリルアミド、ポリア
クリル酸ソーダ、酢酸ビニール−アクリル酸エステル共
重合体ケン化物、酢酸ビニール−マレイン酸メチル共重
合体ケン化物、イソブチレン−無水マレイン酸共重合
体、ポリアクリルニトリル加水分解物、澱粉−アクリル
ニトリルグラフト共重合体ケン化物、澱粉−アクリル酸
グラフト共重合体、多糖類−アクリル酸グラフト共重合
体およびこれらの架橋物などがあり、それらを単独もし
くは組合せて使用できる。勿論上記吸水性樹脂をろ布な
どの表面に塗布加工する場合には水などに溶解してその
溶液を塗布乾燥して吸水性樹脂層とすることがあるが、
塗布加工後に樹脂層を架橋処理してもよい。Examples of the water-absorbent resin include methyl cellulose, polyvinyl methyl ether, polyethylene oxide, poly-N-dialkyl acrylamide, sodium polyacrylate, saponified vinyl acetate-acrylic acid ester copolymer, vinyl acetate-maleic acid. Saponified methyl copolymer, isobutylene-maleic anhydride copolymer, polyacrylonitrile hydrolyzate, saponified starch-acrylonitrile graft copolymer, starch-acrylic acid graft copolymer, polysaccharide-acrylic acid graft copolymer There are polymers and cross-linked products thereof, which can be used alone or in combination. Of course, when the above water-absorbent resin is applied to the surface of a filter cloth or the like, it may be dissolved in water and the solution may be applied and dried to form a water-absorbent resin layer.
The resin layer may be subjected to a crosslinking treatment after the coating process.
【００１４】本発明の吸水性ベルトのうちの１種類のベ
ルトは、上記吸水性樹脂を走行ベルトの表面にコーティ
ングすることにより製作される。基材となる走行ベルト
は、ゴム、織布、非吸水性樹脂などの材料で形成される
が、吸水性樹脂と接着性のよいことが前提となる。また
吸水性樹脂を走行ベルトにコーティングする際、走行ベ
ルトと吸水性樹脂との接着親和性が悪い場合や吸水性樹
脂層の変形の大きな場合、吸水性樹脂を直接コーティン
グすると樹脂が剥がれて脱落するおそれがあるので、接
着面には走行ベルトと吸水性樹脂との接着をよくする界
面処理を施工したり、まず変形の小さな樹脂を塗布し、
その外側に変形の大きな樹脂をコーティングするように
すると耐久性の大きな吸水性ベルトが製作できる。One type of water absorbent belt of the present invention is manufactured by coating the surface of the running belt with the water absorbent resin. The running belt as the base material is formed of a material such as rubber, woven cloth, or a non-water-absorbent resin, but it is premised that it has good adhesiveness to the water-absorbent resin. When the running belt is coated with a water-absorbent resin, if the running belt and the water-absorbent resin have poor adhesion affinity or if the water-absorbent resin layer is greatly deformed, the resin will peel off and fall off if the water-absorbent resin is directly coated. Since there is a possibility that there is a danger, the adhesion surface may be subjected to an interface treatment to improve the adhesion between the running belt and the water-absorbent resin, or a resin with a small deformation may be applied first,
By coating the outer surface of the resin with a large deformation, a water-absorbing belt having a large durability can be manufactured.
【００１５】本発明の吸水性ベルトのうちの別種類のベ
ルトは、走行ベルトに種々の形状に成形した吸水性樹脂
を埋め込むことにより製作される。この場合には、ゴム
製や非吸水性樹脂製のベルトに樹脂を埋め込む切り欠き
を設け、接着剤で樹脂を接着してもよいし、化学繊維に
成形した吸水性樹脂を数珠状に取りつけたものをベルト
中に埋め込んでもよい。なお、樹脂の接着部分は、樹脂
の架橋密度を高め、吸水による変形量が少なくなるよう
にしたほうがよい。また、その形状は、ビーズ状、多角
形、その他何でもよく、特に形状は問わない。Another type of water-absorbent belt of the present invention is manufactured by embedding a water-absorbent resin having various shapes in a running belt. In this case, a rubber or non-water-absorbent resin belt may be provided with a notch for embedding the resin, and the resin may be bonded with an adhesive, or the water-absorbent resin molded into a chemical fiber may be attached in a beaded shape. Items may be embedded in the belt. In addition, it is better to increase the cross-linking density of the resin and reduce the amount of deformation due to water absorption in the adhesive portion of the resin. Further, the shape thereof may be a bead shape, a polygonal shape, or any other shape, and the shape is not particularly limited.
【００１６】本発明の吸水性ベルトのうちの別種類のベ
ルトとして、袋状に加工したベルト中に吸水性樹脂を充
填して吸水性ベルトを製作する場合、袋中に充填する吸
水性樹脂の形状としては、パウダー状、ビーズ状、繊維
状のいずれかもしくはそれら形状のものを混合して使用
する。袋状ベルトの種類としては、中に充填した樹脂が
外部に流出しない程度の目開きを有するものであればよ
く、材質的には織布、金網などのものが使用される。吸
水性樹脂を単に袋状ベルトに充填しただけでは樹脂の分
布が偏る可能性があるので、袋が小分けにされるように
加工するか、小分けされた袋を繋ぎ合わせて１枚の吸水
性ベルトを製作するようにすると樹脂の偏りもなくな
り、均一な吸水能力を期待できる。As another type of water-absorbent belt of the present invention, when a water-absorbent belt is manufactured by filling a bag-shaped belt with a water-absorbent resin, the water-absorbent resin to be filled in the bag is As the shape, any one of powder, bead, fiber, or a mixture of those shapes is used. The bag-shaped belt may be of any type as long as it has openings so that the resin filled therein does not flow out to the outside, and materials such as woven cloth and wire mesh are used. The resin may be unevenly distributed by simply filling the water-absorbent resin into the bag-shaped belt, so either process the bags so that they are subdivided, or connect the subdivided bags together to form a single water-absorbent belt. When the above is manufactured, the unevenness of the resin is eliminated, and uniform water absorption capacity can be expected.
【００１７】本発明の吸水性ベルトのうちのさらに別種
類のベルトである、樹脂を紡糸し、織布して吸水性ベル
トとする場合は、吸水性樹脂から紡糸した糸は強度が弱
いため、織布として張力を受ける縦糸には従来のポリエ
ステルなどの繊維を用い、横糸に吸水性樹脂から紡糸し
た糸を用いる。織布方法としては単純な平織りの方が好
ましいが、吸水性樹脂から紡糸した横糸の吸脱水による
伸縮が大きい場合ニット織布としてもよい。When a resin is spun and woven into a water absorbent belt, which is another type of the water absorbent belt of the present invention, the yarn spun from the water absorbent resin has low strength. As the woven fabric, conventional fibers such as polyester are used for the warp yarns that receive tension, and yarns spun from a water-absorbent resin are used for the weft yarns. A simple plain weave is preferable as the woven method, but a knit woven cloth may be used when the weft yarn spun from the water-absorbent resin has large expansion and contraction due to water absorption and dehydration.
【００１８】また吸水性樹脂繊維の強度を高めるため、
紡糸する際化学繊維を芯線として用い、芯線を被覆する
ように吸水性樹脂を架橋成形させた糸としてもよい。ま
た、吸水性ベルトを不織布から製作する本発明のさらに
別種類のベルトの場合、化学繊維の基布の両面に、短繊
維状の吸水性樹脂繊維を絡めていわゆるフェルトを形成
してもよいし、化学繊維の基布の片面に、短繊維状の吸
水性樹脂繊維をニードルパンチングし、脱糸防止のため
裏面を樹脂コーティングしてもよい。さらに、化学繊維
の基布の片面に、短繊維状の吸水性樹脂繊維を植毛し、
電気溶着してもよい。In order to increase the strength of the water absorbent resin fiber,
When spinning, chemical fibers may be used as core wires, and a water absorbent resin may be cross-linked and molded so as to cover the core wires. Further, in the case of a belt of another type of the present invention in which the water absorbent belt is manufactured from a non-woven fabric, a so-called felt may be formed by entwining the short fiber water absorbent resin fibers on both surfaces of the base fabric of the chemical fiber. Alternatively, one side of the base fabric of the chemical fiber may be needle-punched with a short fibrous water-absorbent resin fiber, and the back side may be resin-coated in order to prevent defibering. Furthermore, short fiber-shaped water-absorbent resin fibers are planted on one side of the chemical fiber base cloth,
It may be electro-welded.
【００１９】次に、上記諸種の吸水性樹脂を有する吸水
性ベルトのうち、メチルセルロース、ポリビニールメチ
ルエーテル、ポリエチレンオキサイド、ポリ−Ｎ−ジア
ルキルアクリルアミドなどの温度により疏水性から親水
性あるいはその逆の転移を示す吸水性樹脂を用いて吸水
性ベルトを製作した場合は、これら吸水性樹脂の吸水能
力はせいぜい自重の１０〜２００倍程度と大きくないた
め、吸水性ベルトを周回させて繰り返し再生使用する。
この場合周回の途中に再生装置を設け樹脂を再生しなけ
ればならないが、その方法として、例えば、熱による再
生方法がある。それは樹脂の種類によっても異なるが、
一般に水を含んだ樹脂を３５〜７０℃に加熱して樹脂を
収縮させ、中に取り込んだ水を放出させるものである。
その場合、常温に近いところで再生できる樹脂のほうが
熱効率的に有利である。Next, among the water-absorbent belts having various kinds of water-absorbent resins described above, the transition from hydrophobicity to hydrophilicity or vice versa depending on the temperature of methyl cellulose, polyvinyl methyl ether, polyethylene oxide, poly-N-dialkyl acrylamide or the like. When a water-absorbent belt is manufactured using a water-absorbent resin having the above-mentioned, since the water-absorbent ability of these water-absorbent resins is not as large as 10 to 200 times the weight of the water-absorbent resin at most, the water-absorbent belt is circulated and reused repeatedly.
In this case, the resin must be regenerated by providing a regenerating device in the middle of the circulation, and as a method therefor, there is a regenerating method by heat. It depends on the type of resin,
In general, a resin containing water is heated to 35 to 70 ° C. to shrink the resin and release the water taken in.
In that case, a resin that can be regenerated near room temperature is more advantageous in terms of thermal efficiency.
【００２０】これに対して上記吸水性樹脂を有する吸水
性ベルトのうち、架橋澱粉−アクリルニトリルグラフト
共重合体ケン化物、架橋澱粉−アクリル酸グラフト共重
合体、架橋多糖類−アクリル酸グラフト共重合体や架橋
アクリル酸共重合体などの高吸水性ポリマーを含む吸水
性ベルトを製作した場合は、これら吸水性樹脂の吸水能
力は自重の１００〜１０００倍と大きいため再生処理は
行わず、一定の吸水量に達した後廃棄する方が有利であ
る。吸水性ベルトは脱水装置の圧縮ゾーン後半に掛装し
たほうが脱水すべき水分の絶対量が少ないため樹脂のラ
イフが伸び経済的に有利となる。On the other hand, among the water absorbent belts having the above water absorbent resin, saponified products of crosslinked starch-acrylonitrile graft copolymer, crosslinked starch-acrylic acid graft copolymer, crosslinked polysaccharide-acrylic acid graft copolymer When a water-absorbent belt containing a super absorbent polymer such as a coalesced or cross-linked acrylic acid copolymer is manufactured, the water-absorbing ability of these water-absorbent resins is as large as 100 to 1000 times their own weight, so that the regeneration treatment is not performed and a certain amount of water is absorbed. It is advantageous to discard after reaching the water absorption amount. It is economically advantageous to hang the water absorbent belt in the latter half of the compression zone of the dehydrator because the absolute amount of water to be dehydrated is small and the life of the resin is extended.
【００２１】[0021]
【作用】本発明は、５０ｋｇｆ／ｃｍ2 以下の加圧では
離水することのない吸水性樹脂を有する吸水性ベルトを
装備した脱水処理装置であり、吸水性樹脂は、いったん
吸収した水を容易に離水することはないため、複数個の
圧搾ロールに吸水性ベルトを掛装しても、吸水性ベルト
に保有された水が吐き出されて再び含水物を濡らすとい
う懸念はなくなり、また圧力のかかった状態で水を吸収
させることが可能となったため、圧力のかかる側に吸水
性ベルトを掛装することができ、従来より飛躍的に脱水
率を高めることが期待できるものである。The present invention is a dehydration treatment apparatus equipped with a water-absorbent belt having a water-absorbent resin that does not release water under a pressure of 50 kgf / cm 2 or less. Since it does not separate water, even if the water-absorbent belt is hung on multiple squeezing rolls, there is no concern that the water held in the water-absorbent belt will be discharged and wet the water-containing material again. Since it becomes possible to absorb water in this state, the water-absorbent belt can be hung on the side on which pressure is applied, and it is expected that the dehydration rate will be dramatically increased compared to the conventional case.
【００２２】[0022]
【実施例】図１、２は本発明を応用した実施例を示す。
図１は、対向ロール型脱水機の圧縮部後半に、吸水性樹
脂をコーティングした吸水性ベルト４、５を掛装したも
のである。吸水性ベルトの中間には、吸収性樹脂の再生
装置６、７が設けてあり、そこで吸水性樹脂を再生する
ことにより吸水性ベルトは繰り返し使用される。1 and 2 show an embodiment to which the present invention is applied.
FIG. 1 shows that the water-absorbent belts 4 and 5 coated with a water-absorbent resin are hooked on the latter half of the compression section of the opposed roll type dehydrator. In the middle of the water absorbent belt, absorbent resin regenerating devices 6 and 7 are provided, and the water absorbent belt is repeatedly used by regenerating the water absorbent resin therein.
【００２３】脱水されるべき含水物は、供給ボックス１
に供給され、そこで適度な厚みに調整された後、圧搾ロ
ール１０を含む対向ロールのある圧搾部に移送される。
圧搾部は容積が順次小さくなるように設計されているの
で次第に含水物に圧力がかかり脱水される。圧搾部後半
は高圧脱水部であり、そこでは含水物はさらに高い圧力
がかかり脱水されるが、吸水性ベルトが装着されている
ので搾り出された水は直ちに吸水性樹脂に吸収され、再
び含水物に吸水されることはない。脱水された含水物は
スクレーパ８、９で掻取られ回収される。The water-containing substance to be dehydrated is supplied in the supply box 1.
And is adjusted to have an appropriate thickness there, and then transferred to a squeezing section having an opposing roll including the squeezing roll 10.
Since the squeezing section is designed so that the volume of the squeezing section is gradually reduced, the water-containing substance is gradually pressed to be dehydrated. The latter half of the squeezing section is a high-pressure dehydration section, in which the water-containing substance is dehydrated by applying a higher pressure, but since the water-absorbent belt is attached, the squeezed water is immediately absorbed by the water-absorbent resin and the water-containing resin is rehydrated. No water is absorbed by the object. The dehydrated water-containing material is scraped off by the scrapers 8 and 9 and collected.
【００２４】図２はベルトプレス型脱水機に吸水性ベル
ト４を掛装したものである。吸収性樹脂の再生装置６は
同じく吸水性ベルト４の中間に設けてある。水平ロール
では、ろ布ベルトの張力に基づく圧力がロール面に発生
し、その圧力で含水物は脱水される。吸水性ベルトは、
圧搾ロール１０の後半一本の片側のみに取り付けてある
が、両面に取り付けることもできるし、複数個の圧搾ロ
ールに取り付ければさらに効果的である。FIG. 2 shows a belt press type dehydrator with a water absorbing belt 4 mounted thereon. The absorbent resin regenerating device 6 is also provided in the middle of the water absorbent belt 4. In the horizontal roll, a pressure based on the tension of the filter cloth belt is generated on the roll surface, and the water content is dehydrated by the pressure. The absorbent belt is
Although it is attached only to one side of the latter half of the squeezing roll 10, it can be attached to both sides, or more effectively if it is attached to a plurality of squeezing rolls.
【００２５】（実施例１）図３は本発明の１実施例を示
したものである。含水物供給ボックス１１に供給する含
水物は、予め凝集剤を添加し調質した汚泥か、または通
常の脱水機や遠心分離機で脱水した脱水汚泥のどちらで
あってもよいが、ここではし尿余剰汚泥を通常のベルト
プレス型脱水機により脱水した脱水汚泥の場合について
述べる。使用した脱水汚泥の含水率は８５％であった。
その脱水汚泥を上下ろ布１２、１３の間に厚さ１０ｍｍ
で供給し、対向ロール１８、１９で圧搾脱水した。対向
ロール１８、１９の回りには吸収性樹脂繊維で織布した
吸水ベルト１４、１５が掛装してあり、対向ロール１
８、１９で搾り出された水を吸水ベルト１４、１５で吸
水できるようにした。また、搾りロール２０、２１は吸
水ベルトとして、従来の毛細管作用に基づくフェルト状
ベルトを装着した場合に、フェルト状ベルトに保有され
た水を搾り出すためのものであり、吸収性樹脂を使用す
る場合には特に必要ない。(Embodiment 1) FIG. 3 shows one embodiment of the present invention. The hydrated substance to be supplied to the hydrated substance supply box 11 may be either sludge that has been preliminarily added with a coagulant and conditioned, or dehydrated sludge that has been dehydrated by an ordinary dehydrator or centrifuge. The case of dehydrated sludge in which excess sludge is dehydrated by an ordinary belt press type dehydrator will be described. The dehydrated sludge used had a water content of 85%.
The dehydrated sludge is placed between the upper and lower filter cloths 12 and 13 with a thickness of 10 mm.
And was squeezed and dehydrated by the opposed rolls 18 and 19. Water-absorbing belts 14 and 15 woven of absorbent resin fibers are wound around the opposed rolls 18 and 19, respectively.
The water squeezed out in 8 and 19 was made to be able to be absorbed by the water absorption belts 14 and 15. Further, the squeezing rolls 20 and 21 are used for squeezing out the water retained in the felt-like belt when a felt-like belt based on the conventional capillary action is attached as a water-absorbing belt, and an absorbent resin is used. In particular, it is not necessary.
【００２６】図４は、図３の装置を用いて脱水汚泥を繰
り返して圧搾したときの脱水性能を吸収性樹脂繊維で織
布した吸水ベルトを用いた場合と従来のフェルト製吸水
ベルトを用いた場合とを比較したものである。フェルト
製吸水ベルトを用いた場合には汚泥の含水率は８０％で
飽和するのに対して、本発明の吸水性樹脂繊維で織布し
た吸水ベルトを用いた場合には汚泥の含水率は繰り返し
脱水する毎に８５％、８０％、７５％、７２．５％、７
１％・・・と脱水が進み含水率は低下する。FIG. 4 shows the dehydration performance when the dehydrated sludge is repeatedly squeezed by using the apparatus shown in FIG. 3 using a water absorbing belt woven with absorbent resin fibers and using a conventional felt water absorbing belt. This is a comparison with the case. The water content of the sludge is saturated at 80% when the felt water absorption belt is used, whereas the water content of the sludge is repeated when the water absorption belt woven with the water absorbent resin fiber of the present invention is used. 85%, 80%, 75%, 72.5%, 7 for every dehydration
Dehydration progresses to 1% ... and the water content decreases.
【００２７】[0027]
【発明の効果】脱水装置において、ろ布ベルトの外側に
吸収性樹脂を含む吸水性ベルトを装着し、ロール群中に
圧搾ロールを装備して、含水物から圧搾ロールにより水
を搾り出し、圧力のかかった状態で搾り出された水を吸
収させることが可能となるため、従来より飛躍的に脱水
率を向上することが期待でき、含水物の減容化が図れ
る。EFFECTS OF THE INVENTION In a dehydrator, a water absorbent belt containing an absorbent resin is attached to the outside of a filter cloth belt, a squeezing roll is provided in a roll group, and water is squeezed out from a water-containing material by the squeezing roll to reduce pressure. Since it becomes possible to absorb the water squeezed out in a sprinkled state, it can be expected that the dehydration rate will be improved drastically than in the past, and the volume of hydrous material can be reduced.
【図１】対向ロール型脱水機の後半に吸水性ベルトを取
りつけた脱水処理装置の１例を示す模式図。FIG. 1 is a schematic diagram showing an example of a dehydration treatment device in which a water-absorbent belt is attached to the latter half of an opposed roll type dehydrator.
【図２】ベルトプレス型脱水機に吸水性ベルトを取りつ
けた脱水処理装置の１例を示す模式図。FIG. 2 is a schematic diagram showing an example of a dehydration treatment apparatus in which a water absorbent belt is attached to a belt press type dehydrator.
【図３】対向ロール型脱水機に吸収性樹脂繊維で織布し
た吸水ベルトを取りつけた脱水処理装置の１例を示す模
式図。FIG. 3 is a schematic diagram showing an example of a dehydration treatment apparatus in which a water-absorbing belt woven with absorbent resin fibers is attached to an opposed roll type dehydrator.
【図４】図３の装置を用いて脱水汚泥を脱水したときの
性能を従来装置の性能と比較したグラフ。FIG. 4 is a graph comparing the performance when dewatering the dehydrated sludge using the apparatus of FIG. 3 with the performance of the conventional apparatus.
１，１１ 供給ボックス ２，３，１２，１３ ろ布ベルト ４，５，１４，１５ 吸水性ベルト ６，７ 吸収性樹脂の再生装置 ８，９ １６，１７ スクレーパ １０，１８，１９ 圧搾ロール ２０，２１ 搾りロール 1,11 Supply box 2,3,12,13 Filter cloth belt 4,5,14,15 Water absorbent belt 6,7 Absorbing resin regeneration device 8,9 16,17 Scraper 10,18,19 Squeeze roll 20, 21 Squeeze roll
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２６Ｂ 13/26 9140−3Ｌ (72)発明者 宮下 才知 東京都港区港南１丁目６番27号 荏原イン フィルコ株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical indication location F26B 13/26 9140-3L (72) Inventor Saichi Miyashita 1-6-27 Konan, Minato-ku, Tokyo No. EBARA IN FILCO Co., Ltd.
Claims (4)
のロールに掛装し、少なくとも部分的に対向して走行可
能とされた上下ろ布ベルトの外側に１枚または１組以上
の吸水性樹脂を有する吸水性ベルトを装着し、前記圧搾
ロールにて搾り出された水分を該吸水性ベルトに吸収さ
せるようにしたことを特徴とする含水物の脱水処理装
置。1. One or more water-absorbent resins are hung on a plurality of rolls including at least one squeezing roll, and are outside the upper and lower filter cloth belts that can run at least partially opposite to each other. A dehydration treatment apparatus for water-containing substances, characterized in that a water-absorbent belt having the above-mentioned is attached, and the water squeezed out by the pressing roll is absorbed by the water-absorbent belt.
離水することのない吸水性樹脂を走行ベルトの表面にコ
ーティングしたベルト、または吸水性樹脂を種々の形状
に成形したものを走行ベルトに埋め込んだベルトである
請求項１記載の含水物の脱水処理装置。2. The water-absorbent belt is a belt in which a surface of the running belt is coated with a water-absorbing resin that does not easily release water by pressing, or a running belt is formed by molding the water-absorbing resin into various shapes. The dehydration treatment apparatus for a water-containing material according to claim 1, which is an embedded belt.
離水することのない吸水性樹脂を袋状ベルトの内部に充
填したベルトである請求項１記載の含水物の脱水処理装
置。3. The dehydration treatment apparatus for water-containing substances according to claim 1, wherein the water-absorbent belt is a bag in which a water-absorbent resin that does not easily release water by pressure is filled inside the bag-shaped belt.
離水することのない吸水性樹脂を繊維状に加工し織布し
たベルト、不織布にしたベルト、または基布に植毛した
ベルトである請求項１記載の含水物の脱水処理装置。4. The water-absorbent belt is a belt woven from a water-absorbent resin that does not easily release water by pressure and processed into a fibrous form, a non-woven fabric belt, or a belt planted on a base fabric. Item 1. A dehydration treatment apparatus for a water-containing substance according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4158915A JP2652300B2 (en) | 1992-05-27 | 1992-05-27 | Dehydration equipment for hydrated materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4158915A JP2652300B2 (en) | 1992-05-27 | 1992-05-27 | Dehydration equipment for hydrated materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0671493A true JPH0671493A (en) | 1994-03-15 |
| JP2652300B2 JP2652300B2 (en) | 1997-09-10 |
Family
ID=15682126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4158915A Expired - Fee Related JP2652300B2 (en) | 1992-05-27 | 1992-05-27 | Dehydration equipment for hydrated materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2652300B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008229611A (en) * | 2007-02-22 | 2008-10-02 | Ohbayashi Corp | Dehydrator of excavated earth and sand |
| KR100975394B1 (en) * | 2010-05-25 | 2010-08-11 | (주)에이치엔지앤이 | An apparatus for dehydration of dredge up mud and dehydration method |
| WO2016140006A1 (en) * | 2015-03-03 | 2016-09-09 | 株式会社日立製作所 | Sludge volume reduction device and sewage treatment system comprising same |
| CN108911469A (en) * | 2018-08-20 | 2018-11-30 | 华南理工大学 | A kind of device for deeply dehydrating sludge |
| KR101990889B1 (en) * | 2018-11-22 | 2019-06-19 | 화동하이테크 주식회사 | Apparatus for Processing the Waste Materials using a Belt Conveyor |
| CN114294927A (en) * | 2021-11-28 | 2022-04-08 | 苏珠弟 | Change dewatering device for corrugated paper production |
| KR20240067016A (en) | 2022-11-08 | 2024-05-16 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Compound for forming metal-containing film, composition for forming metal-containing film, and patterning process |
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- 1992-05-27 JP JP4158915A patent/JP2652300B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615293A (en) * | 1979-07-11 | 1981-02-14 | Hoechst Ag | Manufacture of 11oxophosphoraneechlorohydrins and some special compounds of them |
| JPS56105899A (en) * | 1980-01-28 | 1981-08-22 | Mitsui Eng & Shipbuild Co Ltd | Pressing device of dewatering machine |
| JPS61143791U (en) * | 1985-02-20 | 1986-09-05 | ||
| JPS6337605U (en) * | 1986-08-29 | 1988-03-10 | ||
| JPS63140281A (en) * | 1986-12-02 | 1988-06-11 | 新日本製鐵株式会社 | Draining method |
| JPS63146745A (en) * | 1986-12-10 | 1988-06-18 | Hayashikane Zosen Kk | Dewatering method using water-absorbing resin |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008229611A (en) * | 2007-02-22 | 2008-10-02 | Ohbayashi Corp | Dehydrator of excavated earth and sand |
| KR100975394B1 (en) * | 2010-05-25 | 2010-08-11 | (주)에이치엔지앤이 | An apparatus for dehydration of dredge up mud and dehydration method |
| WO2016140006A1 (en) * | 2015-03-03 | 2016-09-09 | 株式会社日立製作所 | Sludge volume reduction device and sewage treatment system comprising same |
| CN108911469A (en) * | 2018-08-20 | 2018-11-30 | 华南理工大学 | A kind of device for deeply dehydrating sludge |
| KR101990889B1 (en) * | 2018-11-22 | 2019-06-19 | 화동하이테크 주식회사 | Apparatus for Processing the Waste Materials using a Belt Conveyor |
| CN114294927A (en) * | 2021-11-28 | 2022-04-08 | 苏珠弟 | Change dewatering device for corrugated paper production |
| CN114294927B (en) * | 2021-11-28 | 2024-02-20 | 苏珠弟 | Dewatering device is used in corrugated paper production |
| KR20240067016A (en) | 2022-11-08 | 2024-05-16 | 신에쓰 가가꾸 고교 가부시끼가이샤 | Compound for forming metal-containing film, composition for forming metal-containing film, and patterning process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2652300B2 (en) | 1997-09-10 |
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