JPH07110338B2 - Continuous granulation method for powder - Google Patents
Continuous granulation method for powderInfo
- Publication number
- JPH07110338B2 JPH07110338B2 JP61089340A JP8934086A JPH07110338B2 JP H07110338 B2 JPH07110338 B2 JP H07110338B2 JP 61089340 A JP61089340 A JP 61089340A JP 8934086 A JP8934086 A JP 8934086A JP H07110338 B2 JPH07110338 B2 JP H07110338B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- floating layer
- humidified
- floating
- granulation method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【発明の詳細な説明】 （産業上の利用分野） この発明は粉体顆粒の多量生産を目的としたもので、粉
体顆粒化を取扱う産業分野、例えば食品加工分野又は化
学品製造分野で利用される。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is intended for mass production of powder granules, and is used in the industrial field handling powder granulation, for example, in the food processing field or chemical product manufacturing field. To be done.
（従来の技術） 従来、易溶性食品分野においては、粉体の顆粒化が行わ
れていた。例えば加湿粉体をスクリーン上へ堆積し、該
スクリーンを振動させて造粒する発明（特公昭48−4341
7号公報）、粉末製品粒子の落下流を水平面にあるジェ
ット液の薄い連続フィルムと接触させ、その際粒子の表
面が湿潤されて粒子が互に液体の表面張力により粘着さ
れ塊まった粒子となってフィーダー上に落下するように
した発明（特公昭49−36868号公報）、粉体を空気圧送
中に加湿し、これを造粒部に導いて顆粒化する発明（特
公昭54−24910号公報）および空気により搬送した粉体
流に液体を噴霧し、これを集積するようにした発明（特
許公表60−500995号公報）等が知られていた。(Prior Art) Conventionally, in the field of easily soluble foods, powder granulation has been performed. For example, an invention in which humidified powder is deposited on a screen and the screen is vibrated for granulation (Japanese Patent Publication No. 48-4341).
No. 7), a falling stream of powder product particles is contacted with a thin continuous film of jet liquid lying on a horizontal plane, where the surfaces of the particles are wetted and the particles are stuck together due to the surface tension of the liquid and agglomerated. Invention of falling onto the feeder (Japanese Patent Publication No. Sho 49-36868), invention of humidifying the powder during pneumatic feeding, and guiding it to the granulation part to make granules (Japanese Patent Publication No. Sho 54-24910) Gazette) and an invention (patent publication 60-500995) in which a liquid is sprayed on a powder flow conveyed by air to accumulate the liquid.
（発明により解決すべき問題点） 前記各発明は、何れも粉体に液を噴霧し、加湿した後、
集積又は浮遊状に保って顆粒化する方法を採用している
ので、均質加湿を要件としている。即ち粉体は相互付着
できる程度に加湿されており、時間の経過と共に大粒化
する性質がある。(Problems to be solved by the invention) In each of the above inventions, after spraying the liquid on the powder and humidifying the powder,
Since it adopts the method of granulating while keeping it in the form of accumulation or suspension, it requires uniform humidification. That is, the powder is humidified to such an extent that it can adhere to each other, and has the property of becoming larger particles over time.
即ち加湿された粉体自体には、粒度制限要因を含まない
ので、集積又は浮遊状態を制御することによって所望の
粒度を得るようになっている。従って比較的小容積の場
所で多量生産することはむつかしく（浮遊密度が比較的
小さい）、容積効率が悪いと言う問題点があり、均一な
加温がむつかしく、かつ他物に付着し易いなどの問題点
があった。That is, since the humidified powder itself does not include a particle size limiting factor, a desired particle size is obtained by controlling the accumulation or floating state. Therefore, it is difficult to mass-produce in a place with a relatively small volume (the floating density is relatively small), there is a problem that the volume efficiency is poor, uniform heating is difficult, and it easily adheres to other objects. There was a problem.
（問題点を解決する為の手段） 然るにこの発明は、粉体を自重落下すると共に、加温空
気を上向に吹き上げて高密度の浮遊層を形成し、該浮遊
層上へ噴霧加水すると共に、前記浮遊層を外力を付与し
て流動させるようにしたので、流動する浮遊層には、加
湿粉体と、無加湿粉体とが混在し、加湿粉体に無加湿粉
体が付着して、自動的に所定粒度の顆粒が造粒されると
共に、乾燥されて排出される。(Means for Solving the Problems) However, according to the present invention, the powder is dropped by its own weight, heated air is blown upward to form a high-density floating layer, and sprayed water is added onto the floating layer. Since the floating layer is made to flow by applying an external force, the flowing floating layer contains a mixture of a humidified powder and a non-humidified powder, and the non-humidified powder adheres to the humidified powder. , Granules of a predetermined particle size are automatically granulated, dried and discharged.
即ちこの発明は、被処理粉体を、加温空気吹上中の有孔
板上に落下させて高密度の浮遊層を形成すると共に、該
浮遊層上に噴霧加水しつつ、前記浮遊層を強制流動させ
て造粒する粉体の連続顆粒化方法である。下方から温風
を吹上げる多数の小孔を有し、かつ振動フィーダーと共
振する前記加温空気吹上げ有孔孔板（以下パーフォレー
ト板と略称）の開孔率は例えば長手流動方向で最初のほ
ぼ1/10幅は0.3％、次のほぼ1.5/10幅は0.5％、次のほぼ
1.5/10幅は0.8％、最後のほぼ6/10幅は0.3％とし、孔の
径は1.0mmとする。前記は部分別の加温空気送入量比率
を示す一例であるけれども、当初少なく、ついで漸増
し、その後、当初とほぼ同一で一定させる。これは、粉
の供給位置では舞粉を抑制し、噴霧加水時により強く浮
遊させて上下混合させる為であり、最終部分では加温空
気を均一に吹き上げて顆粒を乾燥させれば足りるからで
ある。前記加温空気の温度は、ほぼ一定しており、例え
ば80℃〜95℃の値を用いるが、前記パーフオレート板の
長手方向後半においては低温空気（40℃〜60℃）に切替
えることもできる。また前記浮遊層は、振動フィーダー
によって強制的に流動させる。この場合に、加温空気に
よる浮上力と、振動フィーダーによる横方向移動力とが
複合外力となって、浮遊層を混合撹拌させながら、排出
口側へ流動させる。従って適当な加湿下においては、加
湿粉体の回りに無加湿粉体が均等に付着し（恰も加湿粉
体を包み込むように）、全粉体が一定範囲の大きさの顆
粒となって乾燥され、排出される。前記において、浮遊
層の厚さの調節は、堰板の傾斜によって調節され、オー
バーフロー状に顆粒が通過するが、浮遊層の厚さの調節
は、顆粒の滞留時間を調節することになる。前記堰の高
さは、０〜0.3mの範囲で調節される。また、二流体ノズ
ルによる噴霧空気の圧力は2kg/cm2G前後であって、100
μ以下の水粒となる。That is, according to the present invention, the powder to be treated is dropped onto a perforated plate which is being blown with warm air to form a high-density floating layer, and the floating layer is forcibly applied while being sprayed onto the floating layer. This is a continuous granulation method of a powder that is fluidized and granulated. The aperture ratio of the heated air blowing perforated plate (hereinafter abbreviated as perforated plate) having a large number of small holes for blowing warm air from below and resonating with the vibrating feeder is, for example, the first in the longitudinal flow direction. Almost 1/10 width is 0.3%, next almost 1.5 / 10 width is 0.5%, next almost
The 1.5 / 10 width is 0.8%, the final 6/10 width is 0.3%, and the hole diameter is 1.0 mm. The above is an example showing the ratio of the heated air feeding amount for each part, but it is initially small, then gradually increased, and thereafter, it is made to be almost the same as the original and constant. This is because maize is suppressed at the powder supply position, and it is more strongly floated and mixed up and down during spray addition, and in the final part it is sufficient to uniformly blow up warm air to dry the granules. . The temperature of the warmed air is substantially constant, and a value of 80 ° C. to 95 ° C. is used, for example, but it can be switched to low temperature air (40 ° C. to 60 ° C.) in the latter half of the perforate plate in the longitudinal direction. The floating layer is forced to flow by a vibrating feeder. In this case, the levitation force by the heated air and the lateral movement force by the vibrating feeder serve as a composite external force, which causes the floating layer to flow toward the discharge port side while being mixed and stirred. Therefore, under proper humidification, the non-humidified powder adheres evenly around the humidified powder (as if wrapping the humidified powder), and the entire powder is dried into granules of a certain size. , Discharged. In the above, the adjustment of the thickness of the floating layer is adjusted by the inclination of the dam plate, and the granules pass in the form of overflow, but the adjustment of the thickness of the floating layer adjusts the residence time of the granules. The height of the weir is adjusted in the range of 0 to 0.3 m. The pressure of atomizing air from the two-fluid nozzle is around 2 kg / cm 2 G,
The water droplets are less than μ.
（発明の作用） この発明によれば、粉体の高密度浮遊層の上面に噴霧加
水すると共に、前記浮遊層に横方向外力を加えて流動さ
せるので、加湿粉体と無加湿粉体とが強制的に混合され
て、顆粒化すると共に、前記浮遊層を形成する為に送ら
れた加温空気によって乾燥される。即ち自由落下した粉
体は所定厚さの浮遊層となって移動する間に加湿、顆粒
化および乾燥の作用を受け、自動的に整粒されて排出さ
れる。(Effect of the Invention) According to the present invention, since the upper surface of the high-density floating layer of powder is sprayed with water and the floating layer is caused to flow by applying an external lateral force, the humidified powder and the non-humidified powder are separated. It is forcibly mixed, granulated, and dried by the warm air sent to form the floating layer. That is, the free-falling powder is subjected to the effects of humidification, granulation and drying while moving as a floating layer having a predetermined thickness, and is automatically sized and discharged.
（実施例） 次にこの発明を添付図面の実施装置に基づいて説明す
る。(Embodiment) Next, the present invention will be described based on an embodiment of the accompanying drawings.
加工槽１の一側上部に設けた粉体の定量供給機２から最
大長径70μ〜90μの粒乳を90kg/hで加工槽内へ自由落下
させる。前記加工槽は、顆粒の流動方向に長く、横方向
（図中紙面に直角の方向）に短い平面矩形状であって
（例えば15:1）、底部にはパーフォレート板３（有孔
板）が横に張設され、このパーフォレート板３は、振動
フィーダ４の上板を形成している。前記パーフォレート
板３には多数の小孔が所定密度で開孔しており（開孔率
0.3％〜0.8％、図中右側が疎で、中間が密で、左側が疎
となっている）、前記パーフォレート板３の下部には加
温空気（例えば90℃の空気が170m3/hで送入される）が
送入され、前記加工槽１内は減圧（例えば−３〜−10mm
Aq）されている。前記において、自由落下した粉体は、
パーフォレート板３上へ高密度浮遊層を形成する（例え
ば厚さ0.15m、密度0.6）。また前記浮遊層５の上面に
は、二流体ノズル６から水が粉体上に噴霧されるので、
前記浮遊層上面の粉体は加湿される。この場合に粉体は
加温空気によって吹き上げられて浮遊している為、加湿
された粉体は急激な重量増加で降下し、軽量な粉体が浮
上すると共に、振動フィーダー４により矢示７の方向へ
流動する。即ち加湿粉体と無加湿粉体とは、上下左右の
移動力を受けて矢示８、９のように浮遊しながら、前記
矢示７の方向へ流動するのである。このようにして移動
した粉体は、堰10をオーバーフローして、矢示11のよう
に排出口12から排出される。From the fixed quantity powder feeder 2 provided at the upper part of one side of the processing tank 1, milk powder having a maximum major axis of 70 μ to 90 μ is freely dropped into the processing tank at 90 kg / h. The processing tank has a flat rectangular shape (for example, 15: 1) that is long in the flow direction of granules and short in the lateral direction (direction perpendicular to the paper surface in the figure), and has a perforated plate 3 (perforated plate) at the bottom. Stretched laterally, the perforated plate 3 forms the upper plate of the vibrating feeder 4. A large number of small holes are formed in the perforate plate 3 at a predetermined density (open area ratio).
0.3% to 0.8%, the right side in the figure is sparse, the middle is dense, and the left side is sparse), and warm air (for example, 90 ° C. air is 170 m 3 / h at the bottom of the perforate plate 3). The pressure in the processing tank 1 is reduced (for example, -3 to -10 mm).
Aq) has been. In the above, the free-falling powder is
A high-density floating layer is formed on the perforate plate 3 (for example, a thickness of 0.15 m and a density of 0.6). Further, since water is sprayed on the powder from the two-fluid nozzle 6 on the upper surface of the floating layer 5,
The powder on the upper surface of the floating layer is humidified. In this case, since the powder is blown up by the warm air and floats, the humidified powder descends due to a rapid increase in weight, and the lightweight powder floats up. Flow in the direction. That is, the moistened powder and the non-humidified powder flow in the direction of the arrow 7 while floating as indicated by the arrows 8 and 9 by receiving the moving force in the vertical and horizontal directions. The powder thus moved overflows the weir 10 and is discharged from the discharge port 12 as indicated by arrow 11.
前記処理を経て長径140μ〜160μの顆粒が80kg/h得られ
る。この場合に含水率3.8％、排出口付近の温度は約45
℃となる。After the above treatment, 80 kg / h of granules having a long diameter of 140 μ to 160 μ can be obtained. In this case, the water content is 3.8% and the temperature near the outlet is about 45.
℃.
前記において水はポンプ13によって矢示14のように供給
され加圧空気は減圧弁15を経て矢示16のように供給され
る。一方、加温空気は送風機17よりヒーター18を経て送
入される加熱空気と、送風機19から送入される除湿空気
とを混合室20で適度に混合し、所定の温度（例えば90
℃）として、前記パーフォレート板３の下部チャンバー
21に供給する。図中22は噴霧水量測定可能な貯水器、23
は加工槽１内とチャンバー21内の圧力を測定する為のマ
ノメーター、24は排風機、25は飛出し粉体の補捉採取装
置、26はパーフォレート板の小孔からの落下粉排出口、
27は振動モータ、28は振幅表示板、29は粉体ホッパー、
30は粉体である。前記における堰10は傾度調節自在であ
って、この傾度により浮遊層の厚さを例えば0m〜0.3mに
亘って調節することができる。In the above, the water is supplied by the pump 13 as shown by the arrow 14, and the pressurized air is supplied through the pressure reducing valve 15 as shown by the arrow 16. On the other hand, the heated air is obtained by appropriately mixing the heated air sent from the blower 17 through the heater 18 and the dehumidified air sent from the blower 19 in the mixing chamber 20 to a predetermined temperature (for example, 90
C.) as the lower chamber of the perforate plate 3
Supply to 21. In the figure, 22 is a water reservoir that can measure the amount of spray water, 23
Is a manometer for measuring the pressure in the processing tank 1 and the chamber 21, 24 is an air blower, 25 is a catching and collecting device for ejected powder, 26 is an outlet for dropping powder from a small hole in the perforate plate,
27 is a vibration motor, 28 is an amplitude display plate, 29 is a powder hopper,
30 is powder. The weir 10 in the above is adjustable in inclination, and the thickness of the floating layer can be adjusted, for example, from 0 m to 0.3 m by this inclination.
（発明の効果） 即ちこの発明によれば、粉体を連続的に自然落下させ
て、所定厚さの浮遊層を増減形成させ、該浮遊層の上面
に噴霧加水すると共に、浮遊層に横方向移動力を強制的
に付与して、全体を一方向へ流動させるようにしたの
で、加湿粉体と未加湿粉体とが高密度浮遊状態のまま高
頻度の接触によって造粒され、ついで乾燥されて整粒状
態で連続的に排出されることが可能である。(Effects of the Invention) That is, according to the present invention, the powder is continuously and naturally dropped to form a floating layer having a predetermined thickness, and the upper surface of the floating layer is sprayed with water and the floating layer is laterally moved. Since the moving force was forcibly applied to make the whole flow in one direction, the moistened powder and the non-humidified powder were granulated by frequent contact in a high-density floating state, and then dried. It is possible to continuously discharge the particles in a sized state.
従って高い高率で良好な顆粒を多量生産することができ
る。Therefore, it is possible to mass-produce good granules at a high rate.
図はこの発明の実施装置の説明図である。 １……加工槽、３……パーフォレート板 ４……振動フィーダー、５……浮遊層 12……排出口、13……ポンプ 17、19……送風機、30……粉体 The figure is an illustration of an apparatus for carrying out the present invention. 1 ... Processing tank, 3 ... Perforate plate 4 ... Vibration feeder, 5 ... Floating layer 12 ... Discharge port, 13 ... Pump 17, 19 ... Blower, 30 ... Powder
フロントページの続き (56)参考文献 特開 昭48−78206（ＪＰ，Ａ) 特開 昭62−30542（ＪＰ，Ａ) 特開 昭60−234664（ＪＰ，Ａ) 最新粉粒体プロセス技術集成編集委員会 編「最新粉粒体プロセス技術集成〈基礎技 術編〉」昭和51年５月１日（株）産業技術 センター発行131〜132頁181〜182頁Continuation of the front page (56) References JP-A-48-78206 (JP, A) JP-A-62-30542 (JP, A) JP-A-60-234664 (JP, A) Latest powder and particle process technology compilation compilation “Latest powder and particle process technology compilation <Basic technology>” edited by the committee May 1, 1976, Industrial Technology Center Co., Ltd. 131-132 pages 181-182
Claims (3)
上に落下させて浮遊層を形成すると共に、前記浮遊層の
流動方向に対して漸増し、ついで漸減させ該浮遊層上に
噴霧加水しつつ、前記浮遊層を所定方向へ機械的外力に
よって強制流動させて造粒し、乾燥することを特徴とし
た粉体の連続顆粒化方法。1. A powder to be treated is dropped onto a perforated plate in which heated air is being blown to form a floating layer, and the floating layer is gradually increased in the flow direction of the floating layer and then gradually reduced to be suspended. A method for continuous granulation of powder, characterized in that the floating layer is forcibly flown by a mechanical external force in a predetermined direction to be granulated while being sprayed with water on the layer, and is then dried.
範囲第１項記載の粉体の連続顆粒化方法。2. The continuous granulation method for powder according to claim 1, wherein the thickness of the floating layer is adjustable.
上力と、機械的外力による横流動力とを受けて造粒され
た特許請求の範囲第１項記載の粉体の連続顆粒化方法。3. The continuous powder according to claim 1, wherein the powder in the floating layer is granulated by an upward levitation force by warm air and a lateral flow force by a mechanical external force. Granulation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61089340A JPH07110338B2 (en) | 1986-04-18 | 1986-04-18 | Continuous granulation method for powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61089340A JPH07110338B2 (en) | 1986-04-18 | 1986-04-18 | Continuous granulation method for powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62247833A JPS62247833A (en) | 1987-10-28 |
| JPH07110338B2 true JPH07110338B2 (en) | 1995-11-29 |
Family
ID=13967963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61089340A Expired - Lifetime JPH07110338B2 (en) | 1986-04-18 | 1986-04-18 | Continuous granulation method for powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07110338B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0770423B1 (en) | 1995-10-26 | 2002-12-11 | Knorr Foods Co., Ltd. | Apparatus and method for continuously granulating powder material |
| JP3565668B2 (en) * | 1995-10-26 | 2004-09-15 | クノール食品株式会社 | Apparatus and method for continuous granulation of granules |
| NO312712B1 (en) * | 1999-12-15 | 2002-06-24 | Norsk Hydro As | A sorting fluid bed granulator and method of fluid bed granulation |
| KR20060133050A (en) * | 2004-03-26 | 2006-12-22 | 산또리 가부시키가이샤 | Process for producing health food containing dietary fiber |
| JP4894455B2 (en) * | 2006-10-26 | 2012-03-14 | 味の素株式会社 | Method and apparatus for controlling bulk density of agglomerated granules |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK131326C (en) * | 1971-12-29 | 1976-01-05 | Niro Atomizer As | PROCEDURE FOR PRODUCING A ROUGH-GRAIN PRODUCT WITH RELATIVELY HIGH MOISTURE CONTENT |
| JPS60234664A (en) * | 1984-05-09 | 1985-11-21 | グラツト・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method and apparatus for monitoring and controlling physicaltreatment process and biological reaction in pneumatic technique apparatus |
| JPH06186B2 (en) * | 1985-07-31 | 1994-01-05 | 株式会社大川原製作所 | Continuous fluidized bed granulator |
-
1986
- 1986-04-18 JP JP61089340A patent/JPH07110338B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 最新粉粒体プロセス技術集成編集委員会編「最新粉粒体プロセス技術集成〈基礎技術編〉」昭和５１年５月１日（株）産業技術センター発行１３１〜１３２頁１８１〜１８２頁 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62247833A (en) | 1987-10-28 |
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