JPH06186B2 - Continuous fluidized bed granulator - Google Patents
Continuous fluidized bed granulatorInfo
- Publication number
- JPH06186B2 JPH06186B2 JP60170332A JP17033285A JPH06186B2 JP H06186 B2 JPH06186 B2 JP H06186B2 JP 60170332 A JP60170332 A JP 60170332A JP 17033285 A JP17033285 A JP 17033285A JP H06186 B2 JPH06186 B2 JP H06186B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- fluidized bed
- amount
- granulation
- granulating
- 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
Links
- 239000000463 material Substances 0.000 claims description 33
- 238000005469 granulation Methods 0.000 claims description 26
- 230000003179 granulation Effects 0.000 claims description 26
- 238000005192 partition Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 13
- 238000000605 extraction Methods 0.000 description 7
- 239000008187 granular material Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920002261 Corn starch Polymers 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007908 dry granulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
Landscapes
- Feed For Specific Animals (AREA)
- Fodder In General (AREA)
- Glanulating (AREA)
Description
【発明の詳細な説明】 （発明の目的） 〔産業上の利用分野〕 この発明は、分級排出機能を備えた連続式流動層造粒装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a continuous fluidized bed granulator having a classifying and discharging function.
この種の流動層造粒装置にあっては、造粒室から分級室
への材料供給量が変動すると、分級室の負荷量が変わる
ため分級効率が変わり、よって、製品の粒度分布は不安
定になるものである。例えば、負荷が増すと、分級効率
が低下し、分級されずに排出される微粉の量が増加す
る。In this type of fluidized bed granulator, if the amount of material supplied from the granulating chamber to the classifying chamber fluctuates, the load on the classifying chamber also changes, which changes the classification efficiency, resulting in an unstable product particle size distribution. It will be. For example, as the load increases, the classification efficiency decreases, and the amount of fine powder discharged without classification increases.
ところで、従来における流動層造粒装置は、造粒室と分
級室との圧力差から生じる吸引作用を利用して材料を分
級質に供給する等の方法がとられている。By the way, the conventional fluidized bed granulating apparatus employs a method of supplying a material to a classifying material by utilizing a suction action generated by a pressure difference between the granulating chamber and the classifying chamber.
しかしながら、この装置にあっては、造粒室内な滞留量
が一定となる様に、造粒品排出用の正業フラップ板の開
度を制御しているため、造粒室から分級室への材料供給
量が定量となるような制御をすることはできない。However, in this device, since the opening degree of the regular flap plate for discharging the granulated product is controlled so that the staying amount in the granulating chamber becomes constant, the opening from the granulating chamber to the classifying chamber is controlled. It is not possible to control the amount of material supply to be quantitative.
このため、造粒室への材料供給量が変動すると分級質へ
の材料供給量が変わり、あるいは造粒室での造粒状態に
よって分級質からの再循環量が変動するために、造粒室
から分級室への材料供給量が変動し、分級室の負荷量が
変わるため分級効率が変わり、よって、製品の粒度分布
が不安定になるという不都合を有した。Therefore, if the amount of material supplied to the granulation chamber changes, the amount of material supplied to the classifier changes, or the amount of recirculation from the classifier changes depending on the granulation condition in the granulator. Since the amount of material supplied to the classifying chamber fluctuates and the load of the classifying chamber changes, the classification efficiency also changes, resulting in the instability of the particle size distribution of the product.
（発明の構成） 〔前記目的を達成するための手段〕 この発明は前記問題点を解決するためになされたもので
あり、その要旨は、 底部に目皿板を有する造粒室と、この造粒室と仕切板に
よって区切られている分級室と、前記造粒質から前記分
級室に材料を定量連続移動させる手段とを備え、前記目
皿板は略中心部に孔が形成されていると共に、この孔に
は抜き出し管が接続され、且つ、この抜き出し管の下方
に設置した前記定量連続移送手段によって前記抜き出し
管を通過した材料を前記分級室に移動させる連続式流動
層造粒装置である。(Structure of the Invention) [Means for Achieving the Object] The present invention has been made to solve the above problems, and its gist is to provide a granulating chamber having a perforated plate at the bottom, and A classifying chamber separated by a granulating chamber and a partition plate, and means for quantitatively and continuously moving the material from the granulation material to the classifying chamber, the perforated plate having a hole formed in a substantially central portion thereof. An extraction pipe is connected to this hole, and a continuous fluidized bed granulator for moving the material passing through the extraction pipe to the classification chamber by the quantitative continuous transfer means installed below the extraction pipe. .
この発明に係る、連続式流動層造粒装置は上記のように
構成されている。The continuous fluidized bed granulator according to the present invention is configured as described above.
このため、即ち、造粒室から分級室への材料の供給をス
クリュー等の定量連続移動させるコンベアによって行う
ものであるため、造粒室での造粒状態が変動しても造粒
室から分級室へ材料を一定量づつ供給することができる
結果、分級効率は変わりにくく、この結果、製品の粒度
分布は安定する。For this reason, that is, since the material is supplied from the granulating chamber to the classifying chamber by a conveyer such as a screw that continuously moves quantitatively, even if the granulating state in the granulating chamber changes, the granulating chamber classifies the material. As a result of being able to supply a fixed amount of material to the chamber, the classification efficiency is stable and as a result, the particle size distribution of the product is stable.
また、この発明に係る連続式流動層造粒装置は、製品に
要求される粒度分布の幅に応じて分級室への材料供給量
を変えることができる。Further, the continuous fluidized bed granulating apparatus according to the present invention can change the material supply amount to the classification chamber according to the width of the particle size distribution required for the product.
なお、流動造粒室の流動層圧損を検知し、材料の供給量
を調節することにより、前記造粒室内滞留量を一定に制
御すれば、造粒室への材料の供給量を、要求される粒度
分布を持つ製品排出量に見合った量だけ自動的に供給す
ることができる。In addition, by detecting the fluidized bed pressure drop in the fluidized granulation chamber and adjusting the amount of material supplied to control the amount of residence in the granulation chamber to be constant, the amount of material supplied to the granulation chamber is required. It is possible to automatically supply only the amount corresponding to the product discharge amount having a certain particle size distribution.
以下、図面に基づいてこの発明の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において、Ｍは連続式流動層造粒装置であり、主
用部として造粒室11を有する。この造粒室11内で材料は
粒化される。13は材料供給装置であり、前記造粒室11の
側方に設置されている。この材料供給装置13は、例えば
図に示すようにスクリューコンベア15（モータ19によっ
て駆動する）を有し、造粒室11の滞留量に応じて供給量
を制御する。スクリューコンベア17は供給スクリューコ
ンベア15で供給された材料を造粒室（１１）に運ぶもの
であって、図ではスクリューとしたがこれもスクリュー
にこだわるものではなく、場合によってはシュートとす
ることもできる。また、23は噴霧ノズルであり、造粒室
11内に設置されている。この噴霧ノズル23は材料にバイ
ンダーを噴霧する。In FIG. 1, M is a continuous fluidized bed granulator and has a granulation chamber 11 as a main part. The material is granulated in the granulation chamber 11. Reference numeral 13 is a material supply device, which is installed on the side of the granulation chamber 11. The material supply device 13 has, for example, a screw conveyor 15 (driven by a motor 19) as shown in the figure, and controls the supply amount according to the retention amount in the granulation chamber 11. The screw conveyor 17 conveys the material supplied by the supply screw conveyor 15 to the granulation chamber (11). Although it is shown as a screw in the figure, this is not a screw, and it may be a chute in some cases. it can. Further, 23 is a spray nozzle, which is a granulation chamber.
It is installed within 11. The spray nozzle 23 sprays the binder onto the material.
次に、25はすりばち状の目皿板であり、造粒室11の底板
を構成している。この目皿板25は造粒された材料を中心
部に集めるためのものである。27は抜き出し管であり、
目皿板25の中心孔29に接続されている。この抜き出し管
27は下方のコンベア室31と連通している。33は定量連続
移送手段（図ではスクリューを例示した）であり、コン
ベア室31に設置されている。このコンベア33は抜き出し
管27を通過してきた造粒された材料を後記分級室37へ定
量連続的に送るものである。Next, 25 is a mortar-shaped perforated plate, which constitutes the bottom plate of the granulation chamber 11. The perforated plate 25 is for collecting the granulated material in the center. 27 is an extraction pipe,
It is connected to the central hole 29 of the perforated plate 25. This extraction tube
27 communicates with the lower conveyor chamber 31. Reference numeral 33 denotes a fixed amount continuous transfer means (a screw is shown in the figure), which is installed in the conveyor chamber 31. This conveyor 33 is for quantitatively and continuously sending the granulated material that has passed through the extraction pipe 27 to a classification chamber 37 described later.
37は分級室であり、仕切板39によって造粒室11から仕切
られている。この分級室37は底に目皿板41を有し、この
目皿板41の上を造粒された材料が排出口43に向かって通
過するとき、下方から吹き上げる熱風によって風力分級
される。風力分級された後、粗粒はすみやかに排出口43
から装置Ｍ外に排出され、又、微粉は上方に舞い上がっ
て分級室37の上端開口45から再度造粒室11に供給され
る。なお、前記仕切板39は、造粒室11の材料が分級室37
に流れこまず、且つ、分級室37の粗粒が造粒室11へ飛び
ださないような高さにしてある。また、前記造粒された
材料が分級質で厚い流動層を形成すると、分散が悪くな
り、分級効率が低下するため、層を希薄層とすべく、分
級室37の出口堰37aは50mm程度若しくはそれ以下が望ま
しい。37 is a classification chamber, which is separated from the granulation chamber 11 by a partition plate 39. The classifying chamber 37 has a perforated plate 41 at the bottom, and when the granulated material on the perforated plate 41 passes toward the discharge port 43, the air is classified by the hot air blown from below. After being classified by the wind force, the coarse particles are quickly discharged from the outlet 43.
Is discharged from the apparatus M to the outside of the apparatus M, and the fine powder rises upward and is supplied to the granulation chamber 11 again from the upper end opening 45 of the classification chamber 37. It should be noted that the material of the granulating chamber 11 in the partition plate 39 is the classification chamber 37.
The height is set so that the coarse particles in the classifying chamber 37 do not flow into the granulating chamber 11 and do not flow into the granulating chamber 11. Further, when the granulated material forms a thick fluidized bed with a classifying property, the dispersion becomes poor and the classifying efficiency decreases, so that the outlet weir 37a of the classifying chamber 37 is about 50 mm or so that the layer is a dilute layer. Less than that is desirable.
更に、47は差圧制御装置であり、造粒室11の流動層圧損
を検知し、材料供給装置13からの供給コンベア15の作動
を制御することにより、材料の供給量を調節して、前記
造粒室11内滞留量を、一定に制御するものである。Further, 47 is a differential pressure control device, by detecting the fluidized bed pressure loss of the granulation chamber 11, by controlling the operation of the supply conveyor 15 from the material supply device 13, by adjusting the supply amount of the material, The amount of residence in the granulation chamber 11 is controlled to be constant.
なお、図において、51，51はダンパ53，53はファン、6
1，61はヒータ、又、63はバグフィルタ、65はファンで
ある。In the figure, 51, 51 are dampers 53, 53 are fans, 6
1, 61 are heaters, 63 is a bag filter, and 65 is a fan.
この実施例の装置を使用し、子豚用ミルクを造粒したと
ころ、結果は以下のようであった。When the milk for piglets was granulated using the apparatus of this example, the results were as follows.
・分級後排出品：３％（粒度０〜0.2mm） 43％（粒度0.2〜0.5mm） 43％（粒度0.5〜0.9mm） 11％（粒度0.9〜1.4mm） ・造粒後 17％（粒度０〜0.2mm） 46％（粒度0.2〜0.5mm） 30％（粒度0.5〜0.9mm） ７％（粒度0.9〜1.4mm） ・材料 ：79％（粒度０〜0.2mm） 13％（粒度0.2〜0.5mm） ８％（粒度0.5〜0.9mm） ０％（粒度0.9〜1.4mm） なお、このときの装置の状態は、 ・流動化面積：造粒部0.08m2 分級部0.02m2 ・熱風温度 ：80℃ ・流動層圧損：210mmAg ・処理量 ：50kg／hr ・添加液量 ：15kg／hr （７％コーンスターチ溶液） 〔発明の効果〕 この発明に係る、連続式流動層造粒装置は上記のように
構成されている。-Discharged product after classification: 3% (particle size 0 to 0.2 mm) 43% (particle size 0.2 to 0.5 mm) 43% (particle size 0.5 to 0.9 mm) 11% (particle size 0.9 to 1.4 mm) -After granulation 17% (particle size 0 to 0.2 mm) 46% (grain size 0.2 to 0.5 mm) 30% (grain size 0.5 to 0.9 mm) 7% (grain size 0.9 to 1.4 mm) ・ Material: 79% (grain size 0 to 0.2 mm) 13% (grain size 0.2 to 0.5mm) 8% (granularity 0.5 to 0.9mm) 0% (granularity 0.9 to 1.4mm) The condition of the equipment at this time is as follows: ・ Fluidized area: Granulation part 0.08m 2 Classification part 0.02m 2・ Hot air temperature : 80 ° C ・ Fluid bed pressure loss: 210 mmAg ・ Treatment amount: 50 kg / hr ・ Additional liquid amount: 15 kg / hr (7% corn starch solution) [Effect of the invention] The continuous fluidized bed granulator according to the present invention is Is configured.
このため、即ち、造粒室から分級室への材料の供給を定
量連続移送手段によって行うものであるため、造粒室で
の造粒状態が変動しても造粒室から分級室へ材料を一定
量づつ供給することができる結果、分級効率は変わりに
くく、この結果、製品の粒度分布は安定する。For this reason, that is, since the material is supplied from the granulating chamber to the classifying chamber by means of the quantitative continuous transfer means, even if the granulation state in the granulating chamber changes, the material is transferred from the granulating chamber to the classifying chamber. As a result of being able to supply a fixed amount, the classification efficiency does not change, and as a result, the particle size distribution of the product becomes stable.
また、この発明に係る連続式流動層造粒装置は、製品に
要求される粒度分布の幅に応じて分級室への材料供給量
を変えることができる。Further, the continuous fluidized bed granulating apparatus according to the present invention can change the material supply amount to the classification chamber according to the width of the particle size distribution required for the product.
なお、流動造粒室の流動層圧損を検知し、材料の供給量
を調節することにより、前記造粒室内滞留量を一定に制
御すれば、造粒室への材料の供給量を、要求される粒度
分布を持つ製品排出量に見合った量だけ自動的に供給す
ることができる。In addition, by detecting the fluidized bed pressure drop in the fluidized granulation chamber and adjusting the amount of material supplied to control the amount of residence in the granulation chamber to be constant, the amount of material supplied to the granulation chamber is required. It is possible to automatically supply only the amount corresponding to the product discharge amount having a certain particle size distribution.
なお、この発明は液状材料の乾燥造粒分級にも適用でき
ることはいうまでもない。It goes without saying that the present invention can also be applied to dry granulation and classification of liquid materials.
第１図はこの発明に係る連続式流動層造粒装置の実施例
の断面図である。 11…流動造粒室 23…スクリューコンベア 25…目皿板 27…抜き出し管 29…孔（中心孔） 37…分級室 39…仕切板 Ｍ…連続式流動層造粒装置FIG. 1 is a sectional view of an embodiment of a continuous fluidized bed granulator according to the present invention. 11 ... Fluidized granulation chamber 23 ... Screw conveyor 25 ... Dish plate 27 ... Extraction pipe 29 ... Hole (center hole) 37 ... Classification chamber 39 ... Partition plate M ... Continuous fluidized bed granulator
Claims (2)
室と仕切板によって区切られている分級室と、前記造粒
室から前記分級室に材料を定量連続移動させる手段とを
備え、前記目皿板は略中心部に孔が形成されていると共
に、この孔には抜き出し管が接続され、且つ、この抜き
出し管の下方に設置した前記定量連続移送手段によって
前記抜き出し管を通過した材料を前記分級室に移動させ
る連続式流動層造粒装置。1. A granulating chamber having a perforated plate at the bottom, a classifying chamber partitioned by the granulating chamber and a partition plate, and means for quantitatively and continuously moving material from the granulating chamber to the classifying chamber. The perforated plate is provided with a hole in the substantially central portion thereof, and a withdrawal pipe is connected to this hole, and the withdrawal pipe is connected with the fixed quantity continuous transfer means installed below the withdrawal pipe. A continuous fluidized bed granulator for moving the passed material to the classification chamber.
量を調節することにより、前記造粒室内滞留量を一定に
制御することを特徴とする特許請求の範囲第１項記載の
連続式流動層造粒装置。2. The method according to claim 1, wherein the pressure drop in the fluidized bed in the granulation chamber is detected and the amount of material supplied is adjusted to control the amount of residence in the granulation chamber to be constant. Continuous fluidized bed granulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60170332A JPH06186B2 (en) | 1985-07-31 | 1985-07-31 | Continuous fluidized bed granulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60170332A JPH06186B2 (en) | 1985-07-31 | 1985-07-31 | Continuous fluidized bed granulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6230542A JPS6230542A (en) | 1987-02-09 |
| JPH06186B2 true JPH06186B2 (en) | 1994-01-05 |
Family
ID=15902975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60170332A Expired - Lifetime JPH06186B2 (en) | 1985-07-31 | 1985-07-31 | Continuous fluidized bed granulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06186B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07110338B2 (en) * | 1986-04-18 | 1995-11-29 | 明治乳業株式会社 | Continuous granulation method for powder |
-
1985
- 1985-07-31 JP JP60170332A patent/JPH06186B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6230542A (en) | 1987-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4591324A (en) | Granulating apparatus | |
| KR100376560B1 (en) | Fluidized bed-carrying drying classifier | |
| US5480617A (en) | Apparatus for continuous fluidized bed agglomeration | |
| JP2579885B2 (en) | Pulverizing method, pulverizing device and classifier for powder material | |
| US4740390A (en) | Granule producing and/or processing apparatus and method | |
| CN101432063B (en) | Flocculation apparatus and method for producing flocculated particle | |
| JPH0342029A (en) | Granulation coating device and granulation coating method using the same | |
| US5213820A (en) | Process and device for fluidized bed spray granulation | |
| US4946653A (en) | Process for the simultaneous classification and regulated, continuous discharge of particulate material from fluidized bed reactors | |
| EP0749770B1 (en) | Device and method for preparing a spray-dried product | |
| EP0749560B1 (en) | Spray drying device | |
| JP2640038B2 (en) | Interstage separator | |
| JPH03135430A (en) | Granule coating method and device | |
| US5130156A (en) | Method for agglomerating food powders | |
| JPH0827133B2 (en) | Wet powder processing equipment | |
| EP0334982A1 (en) | Spray-drying granulation apparatus | |
| JPH06186B2 (en) | Continuous fluidized bed granulator | |
| US5069118A (en) | Mechanism and method for agglomerating food powders | |
| JPS62282629A (en) | Granulation apparatus for continuous fluidized bed | |
| US4379368A (en) | Hot air drier | |
| JPH0613091B2 (en) | Spray drying fluidized granulation method | |
| US4578876A (en) | Process and apparatus for spraying a powder with liquid | |
| CN212702819U (en) | Continuous fluidized bed coating device | |
| EP0122112A2 (en) | Improvements in or relating to a process and apparatus for spraying a powder with liquid | |
| US2728995A (en) | Drying granular material |