JP3470838B2 - Dissolution method of water-soluble polymer powder - Google Patents

Dissolution method of water-soluble polymer powder

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Publication number
JP3470838B2
JP3470838B2 JP11107695A JP11107695A JP3470838B2 JP 3470838 B2 JP3470838 B2 JP 3470838B2 JP 11107695 A JP11107695 A JP 11107695A JP 11107695 A JP11107695 A JP 11107695A JP 3470838 B2 JP3470838 B2 JP 3470838B2
Authority
JP
Japan
Prior art keywords
water
mixing chamber
soluble polymer
polymer powder
dissolving
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 - Fee Related
Application number
JP11107695A
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Japanese (ja)
Other versions
JPH08283418A (en
Inventor
浩一 斎藤
吉宏 月見
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
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Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP11107695A priority Critical patent/JP3470838B2/en
Publication of JPH08283418A publication Critical patent/JPH08283418A/en
Application granted granted Critical
Publication of JP3470838B2 publication Critical patent/JP3470838B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は水に溶解すると高粘性を
示す水溶性高分子物質粉末の分散溶解調整方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting the dispersion and dissolution of a water-soluble polymer substance powder which exhibits high viscosity when dissolved in water.

【0002】[0002]

【従来の技術】水溶性高分子粉末を溶解する場合、作業
能率の向上と、不溶解物の発生例えば「だま」や「まま
こ」等の未溶解物発生とが問題である。これを解決する
ため種々の方法及び装置が開示されている。1) 「水溶性高粘性粉体物質の分散溶解装置」として、
特開昭49−60335号公報には、水溶性高粘性粉体
物質を収容するホッパーの流下口の垂直下方に半球形ま
たは錐形等の粉体分散体を設け、流下口より落下する水
溶性高粘性粉体物質を前記分散体の頂部より周方向に斜
め放射状に分散落下せしめるように構成し、かつ分散体
の下方にジャケット部を形成し、このジャケット部の内
周壁に水中位置に内向方向に開放するスリットを設け、
このスリットより水を噴出して錐面状水膜流を斜め内下
方に流下させるように構成したことを特徴とする分散溶
解装置によって水溶性高粘性物質を初め円錐状に分散水
中に投下し、水中で今度は内側に移動集合させ混合させ
る装置である。
2. Description of the Related Art In the case of dissolving a water-soluble polymer powder, there are problems in that work efficiency is improved and insoluble substances such as "dama" and "mamako" are generated. Various methods and devices have been disclosed to solve this problem. 1) As a “dispersion and dissolution device for water-soluble highly viscous powder substances”,
In JP-A-49-60335 , a hemispherical or pyramidal powder dispersion is provided vertically below the downflow opening of a hopper that contains a water-soluble highly viscous powder substance. The high-viscosity powder substance is arranged so as to be dispersed and dropped obliquely in a radial direction in the circumferential direction from the top of the dispersion, and a jacket is formed below the dispersion, and the inner peripheral wall of the jacket is directed inward toward the underwater position. Provide a slit to open to
Water is jetted from this slit to drop the conical surface water film flow obliquely inward and downward by a dispersion-dissolving device, in which a water-soluble highly viscous substance is initially dropped into a conical dispersion water, This is a device that moves and gathers inwardly in water to mix.

【0003】2)「高分子物質粉末の溶解促進方法」と
して、特開昭50−13431号公報には、ディスパー
ザーに溶媒を流通して高分子物質粉末を半溶解状態で溶
解槽の溶媒中に均一に分散させたものを、高圧空気の噴
出装置により攪乱させる手段と循環装置による向流させ
る手段によって高分子物質粉末を溶解させることを特徴
とする高分子物質粉末の溶解促進方法。
2) As a “method for accelerating dissolution of polymer substance powder”, Japanese Patent Laid-Open No. 50-13431 discloses a method in which a solvent is circulated through a disperser to disperse the polymer substance powder in a solvent in a dissolution tank in a semi-dissolved state. A method of accelerating the dissolution of a polymer substance powder, characterized in that the polymer substance powder is dissolved by a means for disturbing the material uniformly dispersed in the above by means of a high-pressure air jetting device and a means for causing countercurrent flow by a circulation device.

【0004】3)「水溶性高分子化合物の連続溶解方法
および装置」として、特開昭52−19741号公報に
は、水中に分散し膨潤した水溶性高分子化合物の分散液
を、細孔群として複数個の網および/または多孔板を所
定の間隔で設置した流通管の中を通過させることを特徴
とする水溶性高分子化合物の連続溶解方法及び装置。4) 「高分子の溶解方法」として、特開昭61−358
31号公報には、高分子化合物を溶媒中に浸漬し、溶解
させる高分子化合物の溶解方法において、該高分子化合
物と溶媒との混合物に超音波を照射することを特徴とす
る高分子化合物の溶解方法。
3) As "a continuous dissolution method and apparatus for a water-soluble polymer compound", Japanese Patent Laid-Open No. 52-19741 discloses a dispersion of a water-soluble polymer compound swollen by swelling in water. A continuous dissolution method and apparatus for a water-soluble polymer compound, characterized in that a plurality of nets and / or perforated plates are passed through a distribution pipe provided at a predetermined interval. 4) “Polymer dissolution method” is disclosed in JP-A-61-358.
In Japanese Patent Publication No. 31-31, in a method for dissolving a polymer compound in which the polymer compound is immersed in a solvent to dissolve the polymer compound, a mixture of the polymer compound and the solvent is irradiated with ultrasonic waves. Dissolution method.

【0005】5)「ポリマーの溶解方法」として、特開
昭61−238329号公報には、微粒子状態の固体ポ
リマー流を溶媒ジェットへ、溶媒ジェットに対してほぼ
直角に、ポリマー粒子が溶媒ジェットに捕獲されるよう
に導入すること、および溶媒と捕獲されたポリマーとの
ジェットを、ジェットの方向を変化させかつジェットを
崩壊させるようにジェットの主方向成分に対して傾斜し
ている表面に強制的に投射させることを特徴とする固体
ポリマーの溶解方法。
5) As a “polymer dissolving method”, Japanese Patent Laid-Open No. 61-238329 discloses that a solid polymer stream in a fine particle state is made into a solvent jet, and the polymer particles are made into a solvent jet at a substantially right angle to the solvent jet. Introduced as trapped and forcing the jet of solvent and trapped polymer onto a surface that is inclined with respect to the principal directional component of the jet so as to change the direction of the jet and disrupt the jet. A method for dissolving a solid polymer, which comprises:

【0006】6)「攪拌装置及びそれを用いたゼラチン
溶解方法」として、特開昭62−234534号公報に
は、攪拌装置を備えた加熱溶解容器によるゼラチンの溶
解方法において、前記溶解容器を加熱するとともに、前
記攪拌装置の攪拌羽根を発熱させることを特徴とするゼ
ラチン溶解方法。7) ポリビニールアルコール(ポバール)粉末を溶解す
る通常の設備について、高分子刊行会「ポバール」P7
2〜175には塊状物の生成を防ぎ、熱の伝達を効果的
に行うものとして普通2枚翼のプロペラ型が使用され、
その攪拌翼の大きさは溶解槽内径の60〜70%,攪拌
軸は槽底面に垂直に設けられ、攪拌速度がポバールが沈
降しないように、かつ泡を巻き込まないように低からず
又高からず約100r.p.m前後に設定される。加熱
の方法として溶解液中に直接スチーム1〜1.5kg/
cm2のゲージ圧で吹込む、及びその他溶解方法につい
ての注意事項が述べられてある。
6) As a “stirring device and a method for dissolving gelatin using the stirrer”, Japanese Patent Laid-Open No. 234534/1987 discloses a method for dissolving gelatin in a heating and dissolving container equipped with a stirrer, in which the dissolving container is heated. And a stirring blade of the stirring device is heated. 7) Regarding ordinary equipment for dissolving polyvinyl alcohol (poval) powder, refer to Polymer Publishing Association “Poval” P7
2-175 propeller type is usually used to prevent the formation of agglomerates and to effectively transfer heat.
The size of the stirring blade is 60 to 70% of the inner diameter of the melting tank, and the stirring shaft is provided vertically to the bottom of the tank. About 100 r. p. It is set around m. As a heating method, steam 1-1.5 kg /
Precautions regarding blowing with a gauge pressure of cm 2 and other dissolution methods are described.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、前記
1)においては、投入に時間がかかりまた、「ままこ」
は生じないが溶解に比較的長時間を要し、高濃度溶液の
調液は困難であつた、前記2)においては、溶解槽の攪
拌を高圧空気の噴出によって行っているため溶液中に多
量の気泡が混入し、泡の除去に長時間を要し、溶解槽の
壁の汚れが著しく洗浄が困難であり、前記3)は、製造
する溶液の濃度は数%以下であり、高濃度のものは製造
不可能でありまた、流通管内の洗浄に時間がかかり、前
4)は、超音波使用が大容量の装置で短時間に溶液を
得ることは難しく、設備のメンテ負荷や消費電力が大き
く、前記5)は、粉体の投入に時間がかかり、また製造
出来る溶液濃度限界が1〜4%と低濃度であり、前記
6)は、ゼラチン粉末浸漬・膨潤は従来のままであり、
製造の総所要時間としては、それほど短くならず、また
攪拌翼内部に電気式発熱体を入れて攪拌するので電気的
災害の危険にさらされており、前記7)は、蒸気吹き込
みによる発泡及び使用エネルギー量が大きく、「まま
こ」の発生で、製造トラブルが頻発していた。また、溶
液が使用できるようになるまで約8〜9時間を要する等
の問題点を有していた。
[Problems to be Solved by the Invention]
In 1) , it takes a long time to put it in
Although it did not occur, it took a relatively long time to dissolve it, and it was difficult to prepare a high-concentration solution. In 2) above, a large amount of the solution was added to the solution because the dissolution tank was agitated by jetting high-pressure air. Air bubbles are mixed in, it takes a long time to remove the bubbles, and the stains on the walls of the dissolution tank are extremely difficult to clean. In the above 3) , the concentration of the solution to be produced is several% or less, what is impossible manufacture also takes time to clean the distribution pipe, before <br/> Symbol 4), the ultrasonic used to obtain a solution in a short time in the apparatus of large capacity is difficult, the equipment maintenance In the above 5) , the load and power consumption are large, it takes a long time to add the powder, and the concentration limit of the solution that can be produced is as low as 1 to 4%.
6) , the gelatin powder dipping / swelling remains the same,
The total time of preparation, not too short, also are at risk of electrical accidents since stirred into an electrical heating element therein stirring blades, the 7) is foamed and used by blowing steam Due to the large amount of energy, the occurrence of "mamako" caused frequent manufacturing problems. Further, there is a problem that it takes about 8 to 9 hours until the solution can be used.

【0008】本発明の目的は、前記問題点を解決し、高
濃度高分子水溶液を『ダマ』や『ままこ』等の未溶解物
発生なしで、溶液濃度を正確に管理して、所要動力、熱
エネルギー負荷も少なく、洗浄が容易な状態で短時間に
溶解を行なう溶解方法を提供することにある。
An object of the present invention is to solve the above-mentioned problems and to accurately control the solution concentration of a high-concentration high-molecular-weight aqueous solution without generating undissolved substances such as "damage" and "mamako" to obtain a required power. Another object of the present invention is to provide a dissolution method in which a heat energy load is small and dissolution is easy in a short time.

【0009】本発明の上記目的は、(1)水溶性高分子
粉末を水の中に溶解する方法において、前記水溶性高分
子粉末を、高速攪拌機によって攪拌されている25℃以
下の前記水の中に、ガイド板によって300秒以下の短
時間で上下が開口となりかつ外筒に多数のスリット開口
を有する混合室内に投入し、投入終了後、混合室内に設
けられた高速回転翼に依って高速攪拌を行っている状態
において直ちに昇温を行うことを特徴とする水溶性高分
子粉末の溶解方法、(2)前記高速攪拌が、前記混合室
内への液流入が混合室の上下より、前記水溶性高分子粉
末の投入が混合室の上より行なわれ、かつ溶解容器内全
体の液溶解が、混合室外筒のスリットを通った分散体を
含めた液の循環混合によって行われることを特徴とする
前記(1)記載の水溶性高分子粉末の溶解方法、(3)
前記投入される水溶性高分子粉末が、前記混合室上部開
口への流入液中に投入されることを特徴とすることを特
徴とする前記(2)記載の水溶性高分子粉末の溶解方
法、によって達成される。
The above objects of the present invention are as follows: (1) In a method of dissolving a water-soluble polymer powder in water, the water-soluble polymer powder is agitated by a high-speed stirrer at a temperature of 25 ° C. or lower. Inside, the guide plate opens the top and bottom in a short time of 300 seconds or less, and a large number of slit openings are formed in the outer cylinder.
The mixing chamber with the
Method of dissolving the water-soluble polymer powders, characterized in that immediately perform the Atsushi Nobori in a state depending on a high speed rotating blade that is kicked doing high speed stirring, (2) the high-speed stirring, the liquid to the mixing chamber The inflow is from above and below the mixing chamber, the water-soluble polymer powder is charged from above the mixing chamber, and the liquid dissolution of the entire inside of the dissolution container is the liquid including the dispersion passing through the slit of the mixing chamber outer cylinder. method of dissolving the water-soluble polymer powder of (1), wherein a carried out by circulating a mixture, (3)
The method for dissolving a water-soluble polymer powder according to (2) above, wherein the water-soluble polymer powder to be introduced is introduced into a liquid flowing into the upper opening of the mixing chamber. Achieved by

【0010】本発明における水溶性高分子粉末とは、ポ
リビニールアルコール,カルボオキシメチルセルロー
ス,ゼラチン,ポリエチレンオキサイド,ポリアクリル
アミド等をいう。又本発明の高速攪拌機によって攪拌さ
れている25℃以下の水とは、5〜25℃,好ましくは
10〜20℃の水で高速攪拌機によって攪拌されている
水をいう。又本発明における水の中に300秒以下の短
時間で投入するということは、5〜300秒,好ましく
は10〜120秒であり、結果として粉末の表面が溶解
して粘着性が高まらない内に瞬時に分散させることを意
味する。
The water-soluble polymer powder in the present invention means polyvinyl alcohol, carbooxymethyl cellulose, gelatin, polyethylene oxide, polyacrylamide and the like. Further, the water having a temperature of 25 ° C. or less which is stirred by the high speed stirrer of the present invention means water which is stirred by the high speed stirrer with water at 5 to 25 ° C., preferably 10 to 20 ° C. In addition, in the present invention, the fact that the powder is poured into water in a short time of 300 seconds or less is 5 to 300 seconds, preferably 10 to 120 seconds. As a result, the surface of the powder is dissolved and the tackiness is not increased. It means to instantly disperse.

【0011】本発明において溶解水又は水溶液の高速攪
拌としては、上下が開口となり、かつ外筒に多数のスリ
ット開口を有する混合室内に設けられた高速回転翼によ
って行なわれ該混合室内への水又は溶液流入が該混合室
の上下より、前記水溶性高分子粉末の投入が混合室の上
部開口より行なうことによって、上方よりの流入液が粉
末とまず混合し、次に下方よりの水と混合して更に分散
することによって、瞬時分散が行なわれ、かつ溶解容器
内全体の液溶解が、混合室外筒のスリットを通った分散
液を含めた液の循環混合によって行なわれる。
In the present invention, the high-speed stirring of the dissolved water or the aqueous solution is carried out by a high-speed rotary blade provided in a mixing chamber having openings at the top and bottom and a large number of slit openings in the outer cylinder, By injecting the solution from above and below the mixing chamber and introducing the water-soluble polymer powder from the upper opening of the mixing chamber, the inflow liquid from above is first mixed with the powder, and then mixed with water from below. By performing further dispersion, instantaneous dispersion is performed, and liquid dissolution in the entire dissolution container is performed by circulation mixing of the liquid including the dispersion liquid passing through the slit of the outer cylinder of the mixing chamber.

【0012】本発明において、前記投入される水溶性高
分子粉末が、前記混合室の上部開口への流入液中に投入
されることが好ましい。
In the present invention, it is preferable that the water-soluble polymer powder to be introduced is introduced into the liquid flowing into the upper opening of the mixing chamber.

【0013】本発明に用いられる好ましい攪拌機及び溶
解容器の実施態様としては、特開昭62−275023
号公報に示されたものであり、図1および図2によって
説明する。図1に示すように混合室1の上部から水溶性
高分子粉末のフレコンバックよりガイド板7によって導
かれて水溶性高分子粉末が混合室1内の水中に投入され
る。図2において混合室1の中央部には高速回転翼3が
混合室外筒2と一定のクリヤランスを保って設置されて
ある。混合室外筒2には側面内部に好ましくは4枚のバ
ッフルプレート、又側面外部にはインペラー4が、側面
にはスリット開口5が多数設けられている。
A preferred embodiment of the stirrer and dissolution vessel used in the present invention is disclosed in JP-A-62-275023.
FIG. 1 and FIG. 2 will be described. As shown in FIG. 1, the water-soluble polymer powder is introduced from the upper part of the mixing chamber 1 into the water in the mixing chamber 1 by being guided by the guide plate 7 from the flexible container bag of the water-soluble polymer powder. In FIG. 2, a high-speed rotary blade 3 is installed at the center of the mixing chamber 1 while keeping a constant clearance with the mixing chamber outer cylinder 2. The mixing chamber outer cylinder 2 is preferably provided with four baffle plates inside the side surface, an impeller 4 outside the side surface, and a large number of slit openings 5 on the side surface.

【0014】本発明における混合室1の形状は、上下両
端が開放している円筒状、又は中太円筒状のものが適当
である。本発明の混合室中央に設置される高速回転翼3
は放射流型のものを用いる。例えばタービン、ファンタ
ービン、わん曲羽根タービン型である。角度付のファン
タービンやプロペラのような軸流型のものは用いない。
高速回転翼3の回転数は500〜5,000r.p.m
が適当である。
The shape of the mixing chamber 1 in the present invention is preferably a cylinder whose upper and lower ends are open, or a medium thick cylinder. High-speed rotor 3 installed in the center of the mixing chamber of the present invention
Radial flow type is used. For example, it is a turbine, fan turbine, or curved blade turbine type. Axial fan turbines and propellers such as axial flow type are not used.
The rotation speed of the high-speed rotary blade 3 is 500 to 5,000 rpm. p. m
Is appropriate.

【0015】図1において混合室中心部の高速回転翼3
は、混合室1内においては上部開口よりの水溶性高分子
粉末と水とを急激に混合せしめ、水溶性高分子粉末を初
めに上部開口より入る水に分散させ、更に下部開口より
流入する水によって希釈せしめ、更にスリット開口5を
通して、混合室外溶解容器6内に放出し、全体の水中に
微分散させることになる。その時該高速回転翼3の流動
衝撃により、自由に回転出来る混合室外筒2を回転せし
め、その外筒壁のスリット開口5を通じて溶解容器6中
の水中に水溶性高分子粉末を分散させる役目をもってい
る。
In FIG. 1, a high-speed rotor 3 at the center of the mixing chamber
In the mixing chamber 1, the water-soluble polymer powder from the upper opening is rapidly mixed with water, the water-soluble polymer powder is first dispersed in the water entering from the upper opening, and the water entering from the lower opening is further mixed. Then, it is diluted with water, then discharged through the slit opening 5 into the dissolution vessel 6 outside the mixing chamber and finely dispersed in the whole water. At that time, by the flow impact of the high-speed rotary blade 3, the freely rotatable mixing chamber outer cylinder 2 is rotated, and the water-soluble polymer powder is dispersed in the water in the dissolution container 6 through the slit opening 5 of the outer cylinder wall. .

【0016】本発明における混合室外筒2と高速回転翼
3とのクリヤランスは5mm以下で望ましくは1〜3m
mとする。本発明の自由に回転できる混合室外筒2はそ
の回転が自由に出来るように、インペラー4を経由して
軸受に支持されると共に、回転を促すために必要に応じ
混合室外筒2の側面内部にパッフルプレートをもたせ
る。又側面外部にインペラー4を取付ける。混合室外筒
2に設けられた側面外部のインペラー4は、3〜8枚が
適当であり、外筒壁面に設けられる多数のスリット開口
5はスリット幅は10mm以下で、望ましくは2〜5m
m,外筒壁の開口率は30〜60%である。また、混合
室外筒2及びインペラー4の回転数は高速回転翼3の回
転数の1/10〜1/3が適当である。
In the present invention, the clearance between the mixing chamber outer cylinder 2 and the high speed rotary blade 3 is 5 mm or less, preferably 1 to 3 m.
m. The freely rotatable mixing chamber outer cylinder 2 of the present invention is supported by bearings via an impeller 4 so that it can rotate freely, and if necessary, it is provided inside the side surface of the mixing chamber outer cylinder 2 to promote rotation. Hold the puffle plate. Also, install the impeller 4 on the outside of the side surface. The side wall external impeller 4 provided in the mixing chamber outer cylinder 2 is suitably 3 to 8 sheets, and the slit widths of the numerous slit openings 5 provided in the outer cylinder wall surface are 10 mm or less, preferably 2 to 5 m.
m, the aperture ratio of the outer cylinder wall is 30 to 60%. The rotation speed of the mixing chamber outer cylinder 2 and the impeller 4 is appropriately 1/10 to 1/3 of the rotation speed of the high-speed rotor 3.

【0017】混合室外溶解容器内に放出された水溶性高
分子粉末の分散させられた液は溶解容器6の壁に当って
上下二つの液流をつくり、上下二つの液流はそれぞれ混
合室の上下端の開放部より高速回転翼に吸い込まれ、添
加される水溶性高分子粉末を分散させることになる。一
方混合室外筒側面外部に取付けられたインペラーは溶解
容器内において、前記液流に加勢する働きをなす。
The dispersed liquid of the water-soluble polymer powder released into the dissolution container outside the mixing chamber hits the wall of the dissolution container 6 to form two upper and lower liquid streams, and the two upper and lower liquid streams are respectively in the mixing chamber. The water-soluble polymer powder that is sucked into the high-speed rotary blade from the open portions at the upper and lower ends and added is dispersed. On the other hand, the impeller attached to the outside of the side surface of the outer cylinder of the mixing chamber serves to urge the liquid flow in the dissolution container.

【0018】このようにして加えられる粉末によって濃
度を高めることが出来る。又溶液の温度は屈折計8によ
って測定され、目標とする濃度に対して屈折計を設定
し、流量制御弁9等によって水量を調節、規定の濃度に
再現よく素早く制御することが出来る。
The concentration can be increased by the powder thus added. Further, the temperature of the solution is measured by the refractometer 8, the refractometer is set to a target concentration, and the flow rate control valve 9 or the like is used to adjust the amount of water so that the prescribed concentration can be reproducibly and quickly controlled.

【0019】[0019]

【実施例】ポリビニルアルコール(PVA)水溶液(濃
度15重量%)を10ton調製するのに、8000l
の井水を計量し(計量後の水温約17℃)、図1に示し
た攪拌機にて攪拌(回転数550r.p.m)を開始
し、図2に示したように、フレコンバッグ(500kg
/1袋)3袋よりPVA粉末をガイド板7を経由した翼
上部より約60秒で投入し水中に仕込み分散した。
Example: To prepare 10 ton of polyvinyl alcohol (PVA) aqueous solution (concentration 15% by weight),
Well water was measured (water temperature after measurement was about 17 ° C.), stirring was started by the stirrer shown in FIG. 1 (rotation speed 550 rpm), and as shown in FIG.
PVA powder from 3 bags (1 bag) was charged from the upper portion of the wing via the guide plate 7 in about 60 seconds and charged and dispersed in water.

【0020】粉末投入後図3に示したように、ただちに
溶液の加温を開始し50℃まで昇温した。約1.5時間
で「だま」「ままこ」なしで溶解が完了したことが確認
でき、屈折計8にて溶液濃度を測定し、15重量%にな
るように投入井水量を算出し井水を添加した。図3上
(a)で示すように溶液調製のための総所要時間は約3
時間であった。
Immediately after charging the powder, as shown in FIG. 3, the heating of the solution was started and the temperature was raised to 50.degree. It can be confirmed that the dissolution was completed without "damage" and "mamako" in about 1.5 hours. The solution concentration was measured with the refractometer 8 and the amount of well water input was calculated to be 15% by weight. Was added. As shown in FIG. 3 (a), the total time required for solution preparation is about 3
It was time.

【0021】従来の方法によると、図3上(b)によっ
て示したように、水計量,粉末投入,膨潤そして95℃
まで加温(蒸気吹き込みも同時に行う)し、約2.5時
間溶解に要していた。従来の方法での溶液調製のための
総所要時間はその後一定温度に保った後50℃迄冷やす
ため、約8.5時間を要した。又、「ままこ」の残留が
あり、移液時フィルターで除去して使用していた。
According to the conventional method, as shown in FIG. 3B, water metering, powder charging, swelling and 95 ° C.
It was heated up to the same time (steam blowing was also performed at the same time), and it took about 2.5 hours for dissolution. The total time required for preparing the solution by the conventional method was about 8.5 hours because it was kept at a constant temperature and then cooled to 50 ° C. In addition, "Mamako" remained, and it was used after being removed by a filter during liquid transfer.

【0022】[0022]

【発明の効果】本発明の水溶高分子粉末の溶解方法によ
り、 粒子相互がひっつき合って生じる「だま」や「まま
こ」が皆無となり、バルブやストレーナの閉塞トラブル
がなくなった。またこれら未溶解物の付着がなくなり洗
浄が不要となった。
EFFECTS OF THE INVENTION By the method for dissolving a water-soluble polymer powder of the present invention, "damage" and "mamako" caused by particles sticking to each other are eliminated, and valve and strainer clogging troubles are eliminated. In addition, these undissolved substances did not adhere and cleaning became unnecessary.

【0023】 溶解調製時間が従来の1/2〜1/3
に短縮され、能率が著しく向上した。 高濃度の水溶液も大量スケールで得られるようにな
り、かつ目標濃度の水溶液を再現性よく得られるように
なった。 低温度(50℃)で溶解が可能となり大巾な省エネ
ルギーとなった。
The dissolution preparation time is 1/2 to 1/3 that of the conventional method.
It has been shortened to, and the efficiency has improved remarkably. A high-concentration aqueous solution can now be obtained on a large scale, and an aqueous solution with a target concentration can be obtained with good reproducibility. Melting is possible at low temperature (50 ° C), resulting in great energy savings.

【0024】 粉体投入制約時間が30分から2分に
短縮され、また紙袋,ビニール袋の廃棄物がなくなっ
た。 納入された粉末の含水率が異っていても常に一定濃
度の溶液を人手をかけずに得られるようになった。等の
効果を有する。
The time required for powder feeding was reduced from 30 minutes to 2 minutes, and the waste of paper bags and vinyl bags was eliminated. Even if the delivered powders have different water contents, it is now possible to always obtain a solution with a constant concentration without human intervention. And so on.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に用いる溶解装置の一実施例の側面図FIG. 1 is a side view of an embodiment of a melting apparatus used in the present invention.

【図2】本発明に用いる攪拌機の一実施例の斜視図FIG. 2 is a perspective view of an embodiment of a stirrer used in the present invention.

【図3】本発明の一実施例と従来法の1例との溶解温度
対時間の比較図
FIG. 3 is a comparison diagram of melting temperature versus time between one example of the present invention and one example of a conventional method.

【符号の説明】[Explanation of symbols]

1 混合室 2 混合室外筒 3 高速回転翼 4 インペラー 5 スリット開口 6 溶解容器 7 ガイド板 8 屈折計 9 流量制御弁 1 mixing chamber 2 Mixing chamber outer cylinder 3 high-speed rotor 4 impeller 5 slit openings 6 Dissolution container 7 Guide plate 8 Refractometer 9 Flow control valve

フロントページの続き (56)参考文献 特開 昭50−97578(JP,A) 特開 昭62−275023(JP,A) 特開 平4−114724(JP,A) 特開 平5−154368(JP,A) 特開 昭61−26628(JP,A) 特開 平4−244223(JP,A) 特開 平6−240006(JP,A) (58)調査した分野(Int.Cl.7,DB名) C08J 3/05 B01F 1/00 - 17/00 Continuation of the front page (56) Reference JP-A-50-97578 (JP, A) JP-A-62-275023 (JP, A) JP-A-4-114724 (JP, A) JP-A-5-154368 (JP , A) JP 61-26628 (JP, A) JP 4-244223 (JP, A) JP 6-240006 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB) Name) C08J 3/05 B01F 1/00-17/00

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 水溶性高分子粉末を水の中に溶解する方
法において、前記水溶性高分子粉末を、高速攪拌機によ
って攪拌されている25℃以下の前記水の中に、ガイド
板によって300秒以下の短時間で上下が開口となりか
つ外筒に多数のスリット開口を有する混合室内に投入
し、投入終了後、混合室内に設けられた高速回転翼に依
って高速攪拌を行っている状態において直ちに昇温を行
うことを特徴とする水溶性高分子粉末の溶解方法。
1. A method of dissolving a water-soluble polymer powder in water, wherein the water-soluble polymer powder is guided into the water at 25 ° C. or below which is stirred by a high-speed stirrer.
Depending on the plate , the top and bottom may be opened in a short time of 300 seconds or less .
1) Put into a mixing chamber with a large number of slit openings in the outer cylinder, and after the completion of the feeding, rely on the high-speed rotor installed in the mixing chamber.
Therefore, the method for dissolving the water-soluble polymer powder is characterized in that the temperature is immediately raised in the state of performing high-speed stirring .
【請求項2】 前記高速攪拌が、前記混合室内への液流
入が混合室の上下より、前記水溶性高分子粉末の投入が
混合室の上より行なわれ、かつ溶解容器内全体の液溶解
が、混合室外筒のスリットを通った分散体を含めた液の
循環混合によって行われることを特徴とする請求項1記
載の水溶性高分子粉末の溶解方法。
Wherein said high-speed stirring, from the upper and lower liquid inlet mixing chamber to the mixing chamber, the closing of the water-soluble polymer powder is made from above the mixing chamber, and the liquid lysis of whole dissolution vessel The method for dissolving the water-soluble polymer powder according to claim 1, wherein the solution including the dispersion that has passed through the slit of the outer cylinder of the mixing chamber is circulated and mixed.
【請求項3】 前記投入される水溶性高分子粉末が、前
記混合室上部開口への流入液中に投入されることを特徴
とする請求項2記載の水溶性高分子粉末の溶解方法。
3. The method for dissolving the water-soluble polymer powder according to claim 2, wherein the water-soluble polymer powder to be introduced is introduced into a liquid flowing into the upper opening of the mixing chamber.
JP11107695A 1995-04-13 1995-04-13 Dissolution method of water-soluble polymer powder Expired - Fee Related JP3470838B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11107695A JP3470838B2 (en) 1995-04-13 1995-04-13 Dissolution method of water-soluble polymer powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11107695A JP3470838B2 (en) 1995-04-13 1995-04-13 Dissolution method of water-soluble polymer powder

Publications (2)

Publication Number Publication Date
JPH08283418A JPH08283418A (en) 1996-10-29
JP3470838B2 true JP3470838B2 (en) 2003-11-25

Family

ID=14551782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11107695A Expired - Fee Related JP3470838B2 (en) 1995-04-13 1995-04-13 Dissolution method of water-soluble polymer powder

Country Status (1)

Country Link
JP (1) JP3470838B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4418019B1 (en) * 2009-06-23 2010-02-17 和久 村田 Rotating body for stirring and stirring device
WO2010150656A1 (en) * 2009-06-23 2010-12-29 株式会社エディプラス Stirring rotating body and stir device
JP5207487B2 (en) * 2009-12-28 2013-06-12 株式会社エディプラス Rotating body for stirring and stirring device

Also Published As

Publication number Publication date
JPH08283418A (en) 1996-10-29

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