JPS63131980A - Fluidized bed type drier - Google Patents
Fluidized bed type drierInfo
- Publication number
- JPS63131980A JPS63131980A JP27756786A JP27756786A JPS63131980A JP S63131980 A JPS63131980 A JP S63131980A JP 27756786 A JP27756786 A JP 27756786A JP 27756786 A JP27756786 A JP 27756786A JP S63131980 A JPS63131980 A JP S63131980A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized bed
- product
- cyclone
- auxiliary
- air
- 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
- 238000001035 drying Methods 0.000 claims description 32
- 239000002994 raw material Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000011027 product recovery Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Drying Of Solid Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、流動層式乾燥装置、特に、その製品の排出機
構に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fluidized bed drying apparatus, and in particular to a product discharge mechanism thereof.
従来、流動層式乾燥装置としては、合成樹脂。 Conventionally, fluidized bed drying equipment uses synthetic resin.
鉄鉱石２石炭、砂等の乾燥、亜鉛鉱、硫化鉄鉱。Iron ore 2 Dried coal, sand, etc., zinc ore, iron sulfide ore.
ニッケル鉱等の焙焼、下水汚泥、し原汚泥、ゴミ等の焼
却、ゴム、プラスチック等の熱分解等に用いるものが知
られている。It is known to be used for roasting nickel ore, incinerating sewage sludge, raw sludge, garbage, etc., and thermally decomposing rubber, plastic, etc.
そして、この流動層式乾燥装置は、例えば、「産業機械
」５２年１２月号の「流動乾燥装置」或いはｒ１９７８
年日刊工業新聞社」発行の「乾燥装置マニュアル」等に
於て記載される如く、種々の形式のものが知られている
。This fluidized bed drying device is, for example, “Fluidized Drying Device” in the December 1952 issue of “Industrial Machinery” or r1978
Various types of dryers are known, as described in the ``Drying Equipment Manual'' published by Nikkan Kogyo Shinbunsha in 2010.
第３図はその一例として流動層式乾燥装置を示すもので
あり、２１はエアフィルタ、２２はこのエアフィルタ２
１の後部に取り付く送風機、２３はこの送風機より送ら
れる風を温めるエアヒータ、２４は流動層式炉であり、
エアヒータ２３からの熱風を空気導入管２５を介して導
入するようになっており、内部にガス分散板２６を配し
、側壁に製品取出口２７を配しである。２８はこの流動
層式乾燥炉２４に原料を供給する供給装置、２９は製品
取出口２７の下方部に設けたドライヤ製品排出弁、３０
は流動層式乾燥炉２４の上部に設けた排気管路、３１は
この排気管路３０と連絡するサイクロンである。FIG. 3 shows an example of a fluidized bed drying apparatus, where 21 is an air filter, and 22 is this air filter 2.
1 is a blower attached to the rear, 23 is an air heater that warms the air sent from the blower, 24 is a fluidized bed furnace,
Hot air from an air heater 23 is introduced through an air introduction pipe 25, a gas distribution plate 26 is disposed inside, and a product outlet 27 is disposed on the side wall. 28 is a supply device for supplying raw materials to this fluidized bed drying furnace 24; 29 is a dryer product discharge valve provided below the product outlet 27; 30
is an exhaust pipe provided at the upper part of the fluidized bed drying furnace 24, and 31 is a cyclone connected to this exhaust pipe 30.
こめ流動層式乾燥炉２４は、供給値ｆ２８から原料がガ
ス分散板２６上に供給され、ガス分散板２６の下部から
所望温度の熱風が送られると、原料はガス分散板２６上
で運動を起こさせられて、ガス中に浮遊した状態となり
、原料粒子とガスの混合した所謂流動層３２を形成し、
この流動層３２内で原料粒子を激しく接触しながら運動
させて乾燥させるようになっている。一方、排気ガスは
微量の製品とともに流動層式炉２６の上から排気管路３
０を介してサイクロン３１に導かれる。In the fluidized bed drying furnace 24, the raw material is supplied onto the gas distribution plate 26 from a supply value f28, and when hot air at a desired temperature is sent from the lower part of the gas distribution plate 26, the raw material moves on the gas distribution plate 26. The particles are caused to rise and become suspended in the gas, forming a so-called fluidized bed 32 in which raw material particles and gas are mixed,
In this fluidized bed 32, raw material particles are moved and dried while being brought into vigorous contact with each other. On the other hand, the exhaust gas flows from the top of the fluidized bed furnace 26 to the exhaust pipe line 3 along with a small amount of product.
0 to the cyclone 31.
〔発明が解決しようとする問題点〕
しかし、この従来の流動層式乾燥炉２４は、流動層３２
が充分に高い（数センチル数１０センチ以上）場合には
、充分な水頭（静圧）があるために、製品取出口２７へ
の流出速度も大きいが、流出が進んでくるにつれて流動
層３２の高さも低くなり、水頭も小さくなって自然流出
が難しくなってくる。しかも、ガス分散板２６を通過し
た熱風は、ガス分散板２６の形状（多孔板、ノズル々）
や熱風吹き出し孔向きに関係なく、最終的には流動層式
乾燥炉２４内上方に流線を描くために残留している製品
も上下方向には移動するが、容易には製品取出口２７に
移動していかないことになる。[Problems to be Solved by the Invention] However, this conventional fluidized bed drying oven 24 does not have a fluidized bed 32.
is sufficiently high (several centimeters to several tens of centimeters or more), there is sufficient water head (static pressure) and the outflow velocity to the product outlet 27 is also high; however, as the outflow progresses, the fluidized bed 32 As the height decreases, the water head also decreases, making it difficult for natural drainage to occur. Moreover, the hot air that has passed through the gas distribution plate 26 is
Regardless of the orientation of the hot air outlet or hot air outlet, the remaining product will eventually move upwards to form a streamline in the fluidized bed drying oven 24, but it will not easily reach the product outlet 27. They will not be able to move.
そのため、流動層式乾燥炉２４から短時間で残留製品を
完全に排出することができなかった。Therefore, the remaining product could not be completely discharged from the fluidized bed drying oven 24 in a short time.
このような理由から、１台の流動層式乾燥炉で多種類の
製品を効率良（生産するという近年の多品種生産型に対
応できない。特に、ある品種から別の品種に切替を行な
う際、前の品種を短時間で流動層式乾燥炉から完全に排
出して、生産性向上及び省力化の面で好結果をもたらす
ことは困難である。For these reasons, it is not possible to support the recent multi-product production model in which a single fluidized bed drying oven efficiently produces many different products.Especially when switching from one product to another, It is difficult to completely discharge the previous product from the fluidized bed drying furnace in a short period of time to achieve good results in terms of productivity improvement and labor saving.
なお、かかる不具合は、流動層式乾燥炉に限らず、焙焼
炉、焼却炉、熱分解炉に於ても存在している。Note that this problem exists not only in fluidized bed drying furnaces but also in roasting furnaces, incinerators, and pyrolysis furnaces.
本発明は、上述の問題を解決するためになされたもので
、その目的は、流動層から製品を短時間で排出すること
ができる流動層式乾燥装置を提供することである。The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a fluidized bed drying device that can discharge a product from a fluidized bed in a short time.
上記目的を達成するために、本発明は、内部にガス分散
板を配し、側部に製品取出口を配した流動層式炉内に、
空気導入管から熱風を導くとともに、供給装置から原料
を供給することによりガス分散板上に流動層を形成し、
排気ガスとともに微量の製品を流動層式炉から排気管路
を介してサイクロンに排出する流動層式乾燥装置に於て
、前記サイクロンとは別に補助サイクロンを配し、この
補助サイクロンと製品取出口とをダンパを設けた補助管
路で接続したものである。In order to achieve the above object, the present invention provides a fluidized bed furnace equipped with a gas distribution plate inside and a product outlet on the side.
A fluidized bed is formed on the gas distribution plate by introducing hot air from the air introduction pipe and supplying raw materials from the supply device.
In a fluidized bed drying device that discharges a small amount of product along with exhaust gas from a fluidized bed furnace to a cyclone via an exhaust pipe, an auxiliary cyclone is arranged separately from the cyclone, and a connection between the auxiliary cyclone and the product outlet is provided. are connected by an auxiliary conduit equipped with a damper.
本発明によれば、補助管路内の吸引力によりガス分散板
上の残留製品を製品取出口に送り、微量の製品を補助管
路を介して補助サイクロンに導くことができる。According to the present invention, the residual product on the gas distribution plate can be sent to the product outlet by the suction force in the auxiliary pipe, and a small amount of product can be guided to the auxiliary cyclone via the auxiliary pipe.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は本発明の第１実施例に係る流動層式乾燥装置を
示す。FIG. 1 shows a fluidized bed drying apparatus according to a first embodiment of the present invention.
図に於て、１はエアフィルタ、２はこのエアフィルタ１
の後部に取り付く送風機、３はこの送風機より送られる
風を温めるエアヒー、夕、４は流動層式炉であり、エア
ヒータ１からの熱風を空気導入管５を介して導入するよ
うになっており、内部にガス分散板６を配し、側壁に製
品取出ロアを配しである。この流動層式乾燥炉４には供
給装置８から原料を供給されるようになっている。製品
取出ロアには、開閉自在な仕切板９が設けられている。In the figure, 1 is the air filter, 2 is this air filter 1
An air blower is attached to the rear of the air heater, 3 is an air heater that warms the air sent from this air blower, and 4 is a fluidized bed type furnace, which introduces hot air from the air heater 1 through an air introduction pipe 5. A gas dispersion plate 6 is arranged inside, and a product take-out lower is arranged on the side wall. Raw materials are supplied to this fluidized bed drying furnace 4 from a supply device 8. A partition plate 9 that can be opened and closed is provided in the product take-out lower.
１０はこの仕切板９の外側で製品取出口８を覆うように
設けられた製品排出箱、１１はこの製品排出箱１０の下
部に設けたドライヤ製品排出弁、１２はこのドライヤ製
品排出弁１１に連通ずる製品排出ダクトである。１３は
サイクロンであり、排気管路１４を介して流動層式乾燥
炉４と連通している。１３Ａはサイクロン製品排出弁、
１３Ｂはこのサイクロン製品排出弁１３Ａに連結する製
品回収ダクトである。10 is a product discharge box provided outside the partition plate 9 to cover the product outlet 8; 11 is a dryer product discharge valve provided at the bottom of the product discharge box 10; 12 is a dryer product discharge valve 11; This is a communicating product discharge duct. 13 is a cyclone, which communicates with the fluidized bed drying furnace 4 via an exhaust pipe line 14. 13A is the cyclone product discharge valve,
13B is a product recovery duct connected to this cyclone product discharge valve 13A.
１５は製品排出箱１０に連通ずる補助管路であり、その
途中にはダンパ１６が設けられている。Reference numeral 15 designates an auxiliary pipe line communicating with the product discharge box 10, and a damper 16 is provided in the middle of the line.
１７はサイクロン１３とは別に配された補助サイクロン
であり、この補助サイクロン１７に補助管路１５が接続
している。１８は吸引ファンで、吸引ファン用管路１９
を介して補助サイクロン１７の空気排出口に接続してそ
の内部を低圧にしている。１６゛ は空気流量計である
。１７Ａは補助サイクロン製品排出弁、１７Ｂはこの補
助サイクロン製品排出弁１３Ａに連結する補助製品回収
ダクトである。Reference numeral 17 denotes an auxiliary cyclone arranged separately from the cyclone 13, and the auxiliary pipe line 15 is connected to this auxiliary cyclone 17. 18 is a suction fan, and a suction fan conduit 19
The air outlet of the auxiliary cyclone 17 is connected to the air outlet of the auxiliary cyclone 17 to maintain a low pressure inside. 16゛ is an air flow meter. 17A is an auxiliary cyclone product discharge valve, and 17B is an auxiliary product recovery duct connected to this auxiliary cyclone product discharge valve 13A.
次に、このように構成した本実施例の作用を説明する。Next, the operation of this embodiment configured as described above will be explained.
流動層式乾燥炉４には、従来と同様に、ガス分散板６の
下方からエアヒータ３で発生された熱風が供給されると
共に、原料供給装置８から原料が供給され、ガス分散板
６上で流動層２０を形成して、原料粒子の乾燥を行なう
。そして、製品は水頭によって製品排出ロアから適宜排
出されながら、製品排出箱１０−ドライヤ製品排出弁１
１−製品排出ダクト１２の順で送られる。The fluidized bed drying furnace 4 is supplied with hot air generated by the air heater 3 from below the gas distribution plate 6, and raw materials are supplied from the raw material supply device 8, as in the conventional case. A fluidized bed 20 is formed to dry raw material particles. Then, the product is discharged from the product discharge lower as appropriate by the water head, and the product is discharged from the product discharge box 10 to the dryer product discharge valve 1.
1-product discharge duct 12.
この場合、流動層式乾燥炉４内の上方からは排気ガスと
ともに微量の製品がサイクロン１３に送られ、サイクロ
ン１３で回収後、製品回収ダクト１３Ｂから製品排出ダ
クト１２に合流される。一方、ダンパ１６は閉塞してい
て、流動層式乾燥炉４内の微量の製品は補助サイクロン
１７へは送られない。In this case, a small amount of product is sent from above inside the fluidized bed drying furnace 4 together with the exhaust gas to the cyclone 13, and after being collected by the cyclone 13, it is merged into the product discharge duct 12 from the product recovery duct 13B. On the other hand, the damper 16 is closed, and the small amount of product in the fluidized bed drying furnace 4 is not sent to the auxiliary cyclone 17.
しかして、上記原料の乾燥処理が終わり、別の原料処理
に切り替える場合、流動層式乾燥炉４内の残留製品を短
時間で排出する必要がある。Therefore, when the drying process of the raw material is finished and the process is switched to another raw material process, it is necessary to discharge the remaining product in the fluidized bed drying furnace 4 in a short time.
この場合には、ダンパ１６を開放すると同時に吸引ファ
ン１８を運転すると、流動層式乾燥炉４内の熱風を補助
管路１５内にも導くことができ、補助管路１５内に吸引
力が発生する。これによって、ガス分散板６上の残留製
品が製品取出ロアに排出されると共に、微量の製品が補
助管路１５を通って補助サイクロン１７に導かれ、回収
される。In this case, if the damper 16 is opened and the suction fan 18 is operated at the same time, the hot air in the fluidized bed drying furnace 4 can also be guided into the auxiliary pipe 15, and a suction force is generated in the auxiliary pipe 15. do. As a result, the residual product on the gas distribution plate 6 is discharged to the product take-out lower, and a small amount of the product is guided to the auxiliary cyclone 17 through the auxiliary pipe 15 and collected.
このようにして、残留製品はガス分散板６から完全に除
去され、次の別の原料を迅速に流動層式乾燥炉４内に供
給することができる。In this way, the residual product is completely removed from the gas distribution plate 6, and another raw material can be quickly fed into the fluidized bed drying oven 4.
なお、本実施例に於ては、吸引ファン１８により補助管
路１５内に吸引力を発生させているが、補助サイクロン
１７に適当な手段で負圧を発生させるようにすれば吸引
ファン１８を省略することができる。In this embodiment, the suction fan 18 generates suction force in the auxiliary conduit 15, but if the auxiliary cyclone 17 is made to generate negative pressure by an appropriate means, the suction fan 18 can be Can be omitted.
次に、第２図は本発明の第２実施例に係る流動層式乾燥
装置を示すもので、吸引ファン１８と前記空気導入管５
とを戻し管１８゛で 接続し、戻し管１８゛の途中にダ
ンパ１８Ａ′を設け、空気導入管５途中にダンパ５Ａを
設けている。Next, FIG. 2 shows a fluidized bed drying apparatus according to a second embodiment of the present invention, in which a suction fan 18 and the air introduction pipe 5
A damper 18A' is provided in the middle of the return pipe 18', and a damper 5A is provided in the middle of the air introduction pipe 5.
第２実施例によれば、吸引ファン１８からの高い空気を
空気導入管５に戻すことにより流動層式乾燥炉４への空
気の供給能力を上げ、あるいは送風機２の能力をダウン
させることもできる。更には、ダンパ５Ａを全閉とし、
送風機２を停止すれば、送風機２の電力消費が無くなり
、省電力（省エネルギ）化が図れる。According to the second embodiment, by returning high-temperature air from the suction fan 18 to the air introduction pipe 5, the ability to supply air to the fluidized bed drying furnace 4 can be increased, or the ability of the blower 2 can be decreased. . Furthermore, the damper 5A is fully closed,
If the blower 2 is stopped, power consumption of the blower 2 is eliminated, and power saving (energy saving) can be achieved.
又、上記の実施例に於ては、乾燥炉について説明したが
、焙焼炉、焼却炉、熱分解炉等に適用できることは勿論
である。Further, in the above embodiments, a drying furnace was described, but it goes without saying that the present invention can be applied to a roasting furnace, an incinerator, a pyrolysis furnace, etc.
以上述べたように、本発明によれば、流動層を形成する
空気の一部を利用して又は、吸引ファンの排気空気を循
環利用して残留製品の排出を行なうようにしたので、残
留製品の排出時間を短くできる。このため、１台の炉で
多種類の原料を処理する生産方式に適合でき、生産性向
上及び省力化が図られる。As described above, according to the present invention, the residual product is discharged by using a part of the air forming the fluidized bed or by circulating the exhaust air of the suction fan. The discharge time can be shortened. Therefore, the furnace can be adapted to a production method in which many kinds of raw materials are processed with one furnace, and productivity can be improved and labor can be saved.
第１図は本発明の第１実施例に係る流動層式乾燥装置の
説明図、第２図は本発明の第２実施例に係る流動層式乾
燥装置の説明図、第３図は従来に於ける流動層式乾燥装
置の説明図である。
４・・・流動層式炉、５・・・空気導入管、６・・・ガ
ス分散板、７・・・製品取出口、８・・・原料供給機、
９・・・仕切板、１ｏ・・・製品排出箱、１３・・・サ
イクロン、１４・・・排気管路、１５・・・補助管路、
１６・・・ダンパ、１７・・・補助サイクロン、１８・
・・Ｉ引ファン、１８” ・・・戻し管、２０・・・流
動層。FIG. 1 is an explanatory diagram of a fluidized bed dryer according to a first embodiment of the present invention, FIG. 2 is an explanatory diagram of a fluidized bed dryer according to a second embodiment of the present invention, and FIG. 3 is an explanatory diagram of a fluidized bed dryer according to a second embodiment of the present invention. FIG. 4... Fluidized bed furnace, 5... Air introduction pipe, 6... Gas distribution plate, 7... Product outlet, 8... Raw material feeder,
9... Partition plate, 1o... Product discharge box, 13... Cyclone, 14... Exhaust pipe line, 15... Auxiliary pipe line,
16... damper, 17... auxiliary cyclone, 18.
...I-pull fan, 18" ...Return pipe, 20...Fluidized bed.
Claims (2)
した流動層式炉内に、空気導入管から熱風を導くととも
に、供給装置から原料を供給することによりガス分散板
上に流動層を形成し、排気ガスとともに微量の製品を流
動層式炉から排気管路を介してサイクロンに排出する流
動層式乾燥装置に於て、前記サイクロンとは別に補助サ
イクロンを配し、この補助サイクロンと製品取出口とを
ダンパを設けた補助管路で接続したことを特徴とする流
動層式乾燥装置。(1) Into a fluidized bed furnace that has a gas distribution plate inside and a product outlet on the side, hot air is introduced from an air introduction pipe, and raw materials are supplied from a supply device so that the gas distribution plate is In a fluidized bed drying device in which a fluidized bed is formed in the furnace and a small amount of product is discharged from the fluidized bed furnace through an exhaust pipe to a cyclone along with the exhaust gas, an auxiliary cyclone is arranged separately from the cyclone, and this A fluidized bed drying device characterized in that an auxiliary cyclone and a product outlet are connected through an auxiliary pipe line provided with a damper.
し、この吸引ファンと前記空気導入管とを戻し管で接続
したことを特徴とする特許請求の範囲第１項記載の流動
層式乾燥装置。(2) A fluidized bed drying apparatus according to claim 1, characterized in that a suction fan is connected to the air exhaust hole of the auxiliary cyclone, and the suction fan and the air introduction pipe are connected by a return pipe. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27756786A JPS63131980A (en) | 1986-11-20 | 1986-11-20 | Fluidized bed type drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27756786A JPS63131980A (en) | 1986-11-20 | 1986-11-20 | Fluidized bed type drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63131980A true JPS63131980A (en) | 1988-06-03 |
| JPH0545874B2 JPH0545874B2 (en) | 1993-07-12 |
Family
ID=17585300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27756786A Granted JPS63131980A (en) | 1986-11-20 | 1986-11-20 | Fluidized bed type drier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63131980A (en) |
-
1986
- 1986-11-20 JP JP27756786A patent/JPS63131980A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0545874B2 (en) | 1993-07-12 |
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