JP3074622B2 - Method and apparatus for discharging particles from fluidized bed apparatus - Google Patents
Method and apparatus for discharging particles from fluidized bed apparatusInfo
- Publication number
- JP3074622B2 JP3074622B2 JP10137705A JP13770598A JP3074622B2 JP 3074622 B2 JP3074622 B2 JP 3074622B2 JP 10137705 A JP10137705 A JP 10137705A JP 13770598 A JP13770598 A JP 13770598A JP 3074622 B2 JP3074622 B2 JP 3074622B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge chute
- fluidized bed
- particles
- discharge
- chute
- 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
Links
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Coke Industry (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Drying Of Solid Materials (AREA)
- Combined Means For Separation Of Solids (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、スラグ、石炭、そ
の他大塊を含む粒状物を処理（冷却、乾燥、加熱、分級
等又はこれらの組合せ）する流動層装置において、大塊
を効率的に排出することができる粒子排出方法及び装置
に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a fluidized bed apparatus for treating (cooling, drying, heating, classifying or the like or a combination thereof) slag, coal, and other particulates including large lumps, and efficiently processes the large lumps. The present invention relates to a method and apparatus for discharging particles that can be discharged.
【０００２】[0002]
【従来の技術】従来、大塊を含む粒状物、例えば、スラ
グを冷却する流動層冷却機では、スラグ中に前工程で発
生した大塊が多く含まれているので、大塊が流動層内下
部に残留して流動化異常を起こす原因となる。このた
め、大塊を除去することが必要である。しかし、投入さ
れるスラグは高温（例えば、約１０００℃）のため、ふ
るい等の前処理を行うことが耐熱の点から難しく、その
まま流動層に投入して、流動層内から大塊を除去する方
法が必要となる。一方、処理物である製品についても、
最終的には、大塊を除去して粒度を揃えることが必要と
なるが、非常に硬いスラグを大量にふるい等で処理する
場合、ふるいの摩耗が激しいため、メンテナンスコスト
がかかるという問題がある。2. Description of the Related Art Conventionally, in a fluidized bed cooler for cooling granular materials containing large lumps, for example, slag, since large lumps generated in the previous process are contained in slag, large lumps are formed in the fluidized bed. It remains at the bottom and causes fluidization abnormalities. For this reason, it is necessary to remove large lump. However, since the slag to be charged is at a high temperature (for example, about 1000 ° C.), it is difficult to perform a pretreatment such as sieving from the viewpoint of heat resistance. A method is needed. On the other hand, for processed products,
Ultimately, it is necessary to remove large blocks and make the particle size uniform.However, when processing very hard slag with a large amount of sieve, there is a problem in that maintenance cost is increased due to severe wear of the sieve. .
【０００３】図６及び図７は、従来の流動層装置の一例
を示している。大塊を含む粒子からなる被処理物がガス
分散板１０上に投入されるとともに、ガス分散板１０の
下側からガスを導入し粒子を流動化させて流動層１２が
形成され、これにより、被処理物が処理（冷却、乾燥、
加熱、分級等又はこれらの組合せ）され、流動層の端部
近傍に設けられた処理物排出部１４から処理物排出シュ
ート１６を介して粒子が製品として抜き出される。１８
は粒子の移動層、２０は仕切部材である。図６及び図７
に示す装置において、被処理物としてスラグを用い、ガ
スとして冷空気（常温空気）を用いると、スラグ流動層
冷却機が構成される。図６及び図７に示す装置は、２室
型の流動層装置であるが、仕切部材を設けない１室型の
流動層装置も、従来から良く知られている。FIGS. 6 and 7 show an example of a conventional fluidized bed apparatus. An object to be processed consisting of particles including large lumps is charged onto the gas dispersion plate 10, and a gas is introduced from the lower side of the gas dispersion plate 10 to fluidize the particles, thereby forming a fluidized bed 12, whereby a fluidized bed 12 is formed. The object is processed (cooling, drying,
(Heating, classification, or a combination thereof), and the particles are extracted as products from a processed material discharge unit 14 provided near the end of the fluidized bed through a processed material discharge chute 16. 18
Is a moving layer of particles, and 20 is a partition member. 6 and 7
When slag is used as an object to be treated and cold air (normal temperature air) is used as a gas, a slag fluidized bed cooler is configured. The apparatus shown in FIGS. 6 and 7 is a two-chamber fluidized bed apparatus, but a one-chamber fluidized bed apparatus without a partition member is well known in the art.
【０００４】特開平６−２８１１１０号公報には、流動
層炉の分散板の底部に凹部を設け、この凹部に風箱を貫
通する大塊排出シュートの上端を挿嵌させた構造の流動
層からの大塊排出装置が開示されている。Japanese Patent Application Laid-Open No. Hei 6-281110 discloses a fluidized bed having a structure in which a concave portion is provided at the bottom of a dispersion plate of a fluidized bed furnace, and the upper end of a large lump discharge chute penetrating a wind box is inserted into the concave portion. Is disclosed.
【０００５】[0005]
【発明が解決しようとする課題】図６及び図７に示され
る流動層装置では、処理物排出シュート１６内及びその
上部は移動層１８となるため、大塊２２が移動層１８内
に取り込まれ難く処理物排出シュート１６前面のガス分
散板上に堆積する。そして、時間の経過とともに大塊２
２の堆積はガス分散板１０全面に至り、流動層自体の流
動化を悪化させる。また、特開平６−２８１１１０号公
報記載の大塊を分散板及び風箱を貫通させて排出させる
型式のものでは、構造が複雑となる。なお、特開平６−
２８１１１０号公報記載の装置でも、大塊を１００％近
く排出することはできず、最終的には、時間の経過とと
もに大塊が堆積し、流動層自体の流動化が悪くなる。In the fluidized bed apparatus shown in FIGS. 6 and 7, since the inside and the upper part of the processing object discharge chute 16 become the moving bed 18, the large mass 22 is taken into the moving bed 18. It is difficult to accumulate on the gas dispersion plate in front of the processing object discharge chute 16. And, with the passage of time, large lump 2
The deposition of 2 reaches the entire surface of the gas dispersion plate 10 and deteriorates fluidization of the fluidized bed itself. Further, the structure described in JP-A-6-281110 in which a large lump is discharged through a dispersion plate and a wind box has a complicated structure. Incidentally, Japanese Patent Application Laid-Open
Even with the device described in Japanese Patent No. 281110, it is not possible to discharge nearly 100% of large lumps, and eventually large lumps accumulate over time, and the fluidization of the fluidized bed itself becomes poor.
【０００６】本発明は上記の諸点に鑑みなされたもの
で、本発明の目的は、処理物排出シュート内を大塊排出
シュートと通常粒子排出シュートとに分割する仕切壁を
設けるか、又は処理物排出シュートの上流側に隣接して
大塊排出シュートを設け、この大塊排出シュートに、こ
のシュート内上部を流動化させ大塊がシュート内に進入
しやすくするためのガス噴込ノズルを設置することによ
り、大塊の排出を効率よく行なうことができるようにし
た流動層装置からの粒子排出方法及び装置を提供するこ
とにある。また、本発明の目的は、上記の構成に加え
て、仕切壁の少なくとも一部をグリズリ構造、金網構造
等のふるい構造として、大塊排出シュート内にもぐり込
んだ小径粒子を通常粒子排出シュート側へ移動させるこ
とにより、大塊のみを選択的に排出できるようにした流
動層装置からの粒子排出方法及び装置を提供することに
ある。The present invention has been made in view of the above points, and an object of the present invention is to provide a partition wall for dividing the inside of a processed material discharge chute into a large lump discharge chute and a normal particle discharge chute, or A large lump discharge chute is provided adjacent to the upstream side of the discharge chute, and a gas injection nozzle is provided in the large lump discharge chute to fluidize an upper portion of the chute so that the large lump can easily enter the chute. Accordingly, it is an object of the present invention to provide a method and an apparatus for discharging particles from a fluidized bed apparatus, which can efficiently discharge large lumps. Further, an object of the present invention is that, in addition to the above-described configuration, at least a part of the partition wall has a sieve structure such as a grizzly structure or a wire mesh structure, so that small-diameter particles that have penetrated into the large lump discharge chute are directed toward the normal particle discharge chute. It is an object of the present invention to provide a method and an apparatus for discharging particles from a fluidized bed apparatus, in which only large lumps can be selectively discharged by moving .
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の流動層装置からの粒子排出方法は、流動
化異常を起こす原因となる大塊を含む粒子からなる被処
理物をガス分散板上に投入するとともに、ガス分散板下
側からガスを導入し粒子を流動化させて流動層を形成さ
せることにより、被処理物を処理し、流動層端部近傍に
設けられた処理物排出部から処理物排出シュートを介し
て粒子を抜き出す方法において、処理物排出部のガス分
散板側に隣接して大塊排出部を設けるとともに、この大
塊排出部に大塊排出シュートを接続し、大塊排出シュー
トの側部から流動化ガスを噴き込んで大塊排出シュート
内上部の粒子を流動化させ、大塊排出部付近の流動層に
集まった流動化異常を起こす原因となる大塊を大塊排出
シュート内に進入・落下させるように構成されている
（図１〜図５参照）。In order to achieve the above-mentioned object, a method for discharging particles from a fluidized bed apparatus according to the present invention is a method for removing an object to be treated comprising particles including large lumps which may cause fluidization abnormality. The processing object is processed by introducing the gas from the lower side of the gas dispersion plate and introducing the gas from the lower side of the gas dispersion plate to fluidize the particles to form a fluidized bed. In the method of extracting particles from the material discharge portion via the processed material discharge chute, a large mass discharge portion is provided adjacent to the gas dispersion plate side of the processed material discharge portion, and a large mass discharge chute is connected to the large mass discharge portion. large that is, crowded spouting the fluidization gas a large mass discharge chute top of particles to be fluidized from the side of the large lump discharge chute, causing causing fluidization abnormality gathered in the fluidized layer near Daikatamari discharge portion Lump enters large lump discharge chute It is configured to drop (see FIGS. 1 to 5).
【０００８】この方法において、大塊排出シュート内上
部における流動化ガス速度が、流動層における流動化開
始速度Ｕmfの１〜３倍、望ましくは１．５〜２倍となる
ように、大塊排出シュートの側部から流動化ガスを噴き
込む。Ｕmfが上記の範囲未満の場合は大塊が移動し難
く、一方、Ｕmfが上記の範囲を超える場合はシュート内
と流動層内の粒子混合が激しすぎて大塊を選択的に排出
することが難しくなる。[0008] In this method, the large-volume discharge chute in the upper portion of the large-volume discharge chute is 1 to 3 times, preferably 1.5 to 2 times the fluidization start speed Umf in the fluidized bed. The fluidizing gas is injected from the side of the chute. If Umf is less than the above range, large lumps are difficult to move, while if Umf exceeds the above range, particles in the chute and the fluidized bed are too violently mixed, and large lumps are selectively discharged. Becomes difficult.
【０００９】本発明の流動層装置からの粒子排出装置
は、本体内の下部に風箱を有し、この風箱の上側にガス
分散板を介して流動層を形成し、本体の一端に流動化異
常を起こす原因となる大塊を含む粒子を導入するための
被処理物投入口を、本体の他端に処理物排出部を、本体
の上部に微粉を含む排ガスを抜き出すためのガス排出口
を有し、処理物排出部に処理物排出シュートが接続され
た流動層装置において、処理物排出シュート内を、ガス
分散板側に大塊排出シュートが、本体端部側に粒子排出
シュートが形成されるように仕切壁で分割し、大塊排出
シュートの側部に、大塊排出シュート内上部の粒子を流
動化させ、処理物排出部付近の流動層に集まった流動化
異常を起こす原因となる大塊を大塊排出シュート内に進
入・落下しやすくするための流動化ガス噴込ノズルを設
けたことを特徴としている（図１〜図３参照）。The device for discharging particles from a fluidized bed apparatus according to the present invention has a wind box at the lower part in the main body, forms a fluidized bed above the wind box through a gas dispersion plate, and flows the fluid to one end of the main body. Inlet for introducing particles containing large lumps, which cause abnormal gasification, a discharge outlet for processed material at the other end of the main body, and a gas outlet for extracting exhaust gas containing fine powder at the top of the main body In the fluidized bed apparatus in which the processed material discharge chute is connected to the processed material discharge portion, a large lump discharge chute is formed on the gas dispersion plate side and a particle discharge chute is formed on the main body end side in the processed material discharge chute. divided by the partition wall so as to be, on the side of the large lump discharge chute, the large lump discharge chute in an upper portion of the particles are fluidized, and caused to undergo fluidization abnormality gathered in the fluidized layer near the treated discharge section Large chunks can easily enter and fall into the chunk discharge chute. It is characterized in that a fluidizing gas 噴込 nozzle for (see FIGS. 1 to 3).
【００１０】また、本発明の装置は、本体内の下部に風
箱を有し、この風箱の上側にガス分散板を介して流動層
を形成し、本体の一端に流動化異常を起こす原因となる
大塊を含む粒子を導入するための被処理物投入口を、本
体の他端に処理物排出部を、本体の上部に微粉を含む排
ガスを抜き出すためのガス排出口を有し、処理物排出部
に処理物排出シュートが接続された流動層装置におい
て、処理物排出部のガス分散板側に隣接して大塊排出部
を設けるとともに、この大塊排出部に大塊排出シュート
を接続し、大塊排出シュートの側部に、大塊排出シュー
ト内上部の粒子を流動化させ、大塊排出部付近の流動層
に集まった流動化異常を起こす原因となる大塊を大塊排
出シュート内に進入・落下しやすくするための流動化ガ
ス噴込ノズルを設けたことを特徴としている（図４参
照）。Further, the apparatus of the present invention has a wind box in the lower part of the main body, forms a fluidized bed above the wind box via a gas dispersion plate, and causes a fluidization abnormality at one end of the main body. It has a workpiece inlet for introducing particles containing large lumps, a workpiece outlet at the other end of the main body, and a gas outlet for extracting exhaust gas containing fine powder at the top of the main body, and In a fluidized-bed apparatus in which a processed material discharge chute is connected to the processed material discharge portion, a large mass discharge portion is provided adjacent to the gas distribution plate side of the processed material discharge portion, and a large mass discharge chute is connected to the large mass discharge portion. Then, on the side of the mass discharge chute, fluidize the particles in the upper portion of the mass discharge chute, and remove the mass that causes the fluidization abnormality gathered in the fluidized bed near the mass discharge portion. A fluidizing gas injection nozzle to make it easier to enter and fall into the large chute Is characterized by digit (see FIG. 4).
【００１１】さらに、本発明の装置は、本体内の下部に
風箱を有し、この風箱の上側にガス分散板を介して流動
層を形成し、本体の一端に流動化異常を起こす原因とな
る大塊を含む粒子を導入するための被処理物投入口を、
本体の他端に処理物排出部を、本体の上部に微粉を含む
排ガスを抜き出すためのガス排出口を有し、処理物排出
部に処理物排出シュートが接続された流動層装置におい
て、処理物排出シュート内を、ガス分散板側に大塊排出
シュートが、本体端部側に粒子排出シュートが形成され
るように仕切壁で分割し、大塊排出シュートの側部に、
大塊排出シュート内上部の粒子を流動化させ、処理物排
出部付近の流動層に集まった流動化異常を起こす原因と
なる大塊を大塊排出シュート内に進入・落下しやすくす
るための流動化ガス噴込ノズルを設け、大塊排出シュー
トの下部を風箱側に傾斜させ、この傾斜部において、大
塊排出シュートと粒子排出シュートとの間の傾斜仕切壁
の少なくとも一部を大塊は通過せず小径粒子は通過する
ふるい構造とし、傾斜仕切壁の粒子排出シュート側に空
間部が形成されるように、傾斜仕切壁の上方端から下方
に延びる空間形成用仕切壁を設け、大塊排出シュート内
にもぐり込んだ小径粒子を空間部に落下させて粒子排出
シュートへ移動させるように構成されたことを特徴とし
ている（図５参照）。これらの装置において、仕切壁の
上端をガス分散板の上面より高くすることが好ましい。
例えば、スラグを冷却する場合、スラグの製品（粗粒）
は粒径２〜３mm、大塊は粒径８０〜１００mmである場合
が一般的であるので、大塊が粒子排出シュート内に入ら
ないように、仕切壁の上端をガス分散板の上面より１０
０〜２００mm程度高くする。Further, the apparatus of the present invention has a wind box at the lower portion in the main body, forms a fluidized bed above the wind box via a gas dispersion plate, and causes a fluidization abnormality at one end of the main body. A workpiece input port for introducing particles including a large lump,
In a fluidized-bed apparatus having a processed material discharge section at the other end of the main body, a gas discharge port at an upper portion of the main body for extracting exhaust gas containing fine powder, and a processed material discharge chute connected to the processed material discharge section, The inside of the discharge chute is divided by a partition wall so that a large lump discharge chute is formed on the gas dispersion plate side and a particle discharge chute is formed on the body end side, and on the side of the large lump discharge chute,
The particles in the upper part of the large chute are fluidized, and large chunks causing fluidization abnormalities gathered in the fluidized bed near the processed material discharge part enter and fall into the large chute discharge chute. the fluidizing gas噴込nozzles for facilitating provided, the lower part of the large lump discharge chute is inclined to the windbox side, in the inclined portion, the large
At least a portion of the inclined partition wall between the lump discharge chute and the particle discharge chute Daikatamari small diameter particles do not pass through a sieve structure to pass, Ru space is formed particles discharge chute side of the inclined partition wall As below from the upper end of the inclined partition
The space forming the partition wall Ru extends provided, is characterized in that it is configured to move the small particles that sunk into the large lump discharge chute is dropped into the space portion to the particle discharge chute (see Fig. 5). In these devices, it is preferable that the upper end of the partition wall be higher than the upper surface of the gas distribution plate.
For example, when cooling slag, slag products (coarse grains)
Is generally 2 to 3 mm in diameter, and large lumps generally have a particle diameter of 80 to 100 mm, so that the upper end of the partition wall is 10 mm above the upper surface of the gas dispersion plate so that the large lump does not enter the particle discharge chute.
Increase the height by about 0 to 200 mm.
【００１２】[0012]
【発明の実施の形態】以下、流動層装置が２室型の流動
層装置である場合について、本発明の実施の形態を説明
するが、本発明は２室型に限定されるものではなく、１
室型（仕切のないもの）、３室以上の流動層装置にも適
用できるものである。図１は、本発明の実施の第１形態
による流動層装置からの粒子排出装置を示し、図２は、
図１における処理物排出部まわりの詳細を示し、図３
は、図１における処理物排出部まわりの平断面を示して
いる。図１〜図３に示すように、流動層１２を備える室
が縦方向の仕切部材２０（例えば仕切壁）で２室２４、
２６に仕切られている。上流側の室の流動層１２の上流
側には、大塊を含む粒子を投入するための被処理物投入
口２８が設けられており、下流側の室２６の流動層１２
の下流側には、処理物排出部（処理物排出口）１４が設
けられている。仕切部材２０の下側には、ガス分散板１
０との間に通路３０が形成されている。各室２４、２６
の下側には風箱３２、３４が設けられ、各室２４、２６
の上部には微粉を含む排ガスを抜き出すためのガス排出
口３６、３８が設けられ、処理物排出部１４には処理物
排出シュート１６が接続されている。ガス分散板１０と
しては、多孔板型分散板、キャップ型分散板等が用いら
れる。また、風箱へ供給されるガスとしては、冷空気、
加熱空気、燃焼排ガス、Ｎ2 ガス等の不活性ガス等が処
理目的に応じて適宜選択されて用いられる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described for a case where a fluidized bed apparatus is a two-chamber type fluidized bed apparatus, but the present invention is not limited to a two-chamber type. 1
A chamber type (without partitions) can be applied to a fluidized bed apparatus having three or more chambers. FIG. 1 shows an apparatus for discharging particles from a fluidized bed apparatus according to a first embodiment of the present invention, and FIG.
FIG. 3 shows details around the treated material discharge unit in FIG.
2 shows a plane cross section around the processed material discharge part in FIG. As shown in FIGS. 1 to 3, two chambers 24 each including a fluidized bed 12 are formed by a vertical partition member 20 (for example, a partition wall).
26. On the upstream side of the fluidized bed 12 in the upstream chamber, there is provided a treatment object inlet 28 for introducing particles including large lumps, and the fluidized bed 12 in the downstream chamber 26 is provided.
On the downstream side of the processing object, there is provided a processing object discharge section (processing substance discharge port) 14. On the lower side of the partition member 20, the gas distribution plate 1
A passage 30 is formed between the passage 30 and the first passage. Each room 24, 26
On the lower side, wind boxes 32 and 34 are provided.
Gas outlets 36 and 38 for extracting exhaust gas containing fine powder are provided at the upper part of the processing object, and the processing object discharge chute 16 is connected to the processing object discharge section 14. As the gas dispersion plate 10, a perforated plate type dispersion plate, a cap type dispersion plate, or the like is used. The gas supplied to the wind box is cold air,
Heated air, combustion exhaust gas, inert gas such as N 2 gas and the like are appropriately selected and used according to the processing purpose.
【００１３】上記のように構成された流動層装置におい
て、図１〜図３に示すように、処理物排出シュート１６
内を、ガス分散板１０側に大塊排出シュート４４が、装
置本体４８の端部側に粒子排出シュート４６が形成され
るように仕切壁５０で分割する。すなわち、仕切壁５０
をほぼ排出下端まで設ける。５２は大塊排出部（大塊排
出口）である。そして、大塊排出シュート４４の側部
に、流動化ガス噴込ノズル４２を設ける。大塊排出シュ
ート４４には大塊排出機５４が設けられ、粒子排出シュ
ート４６には粒子排出機５６が設けられている。これら
の排出機５４、５６としては、ゲートダンパ、ロータリ
フィーダ、カム機構を利用して開閉する排出機、おもり
のバランスを利用して開閉する排出機等が用いられる。In the fluidized bed apparatus constructed as described above, as shown in FIGS.
The inside is divided by a partition wall 50 such that a large chute discharge chute 44 is formed on the gas dispersion plate 10 side and a particle discharge chute 46 is formed on an end side of the apparatus main body 48. That is, the partition wall 50
Is provided almost to the lower end of the discharge. Reference numeral 52 denotes a large lump discharge section (large lump discharge port). The fluidizing gas injection nozzle 42 is provided on the side of the large lump discharge chute 44. The large chute discharge chute 44 is provided with a large chunk discharge device 54, and the particle discharge chute 46 is provided with a particle discharge device 56. As the dischargers 54 and 56, a discharger that opens and closes using a gate damper, a rotary feeder, and a cam mechanism, a discharger that opens and closes using a balance of weights, and the like are used.
【００１４】つぎに、図１〜図３に示す流動層装置から
の粒子排出装置の作用について説明する。大塊を含む粒
子からなる被処理物を被処理物投入口２８からガス分散
板１２上に投入するとともに、ガス分散板１２からガス
を噴出させて粒子を流動化させて流動層１２を形成さ
せ、被処理物を処理（冷却、乾燥、加熱、分級等又はこ
れらの組合せ）し、処理物（粒子）を処理物排出部１４
から粒子排出シュート４６を介して製品として抜き出
す。なお、ガス排出口３６、３８から排出された微粉を
含む排ガスは、サイクロン又は／及びバグフィルタ等の
集塵器に導入されて微粉が捕集・分離される。大塊排出
シュート４４の側部の流動化ガス噴込ノズル４２から流
動化ガスが噴き込まれ、大塊排出シュート４４内上部の
粒子を流動化させ、大塊を大塊排出シュート４４内に進
入・落下させる。流動化ガスとしては、冷空気、加熱空
気、燃焼排ガス、Ｎ2 ガス等の不活性ガスが用いられ、
大塊排出シュート４４内上部における流動化ガス速度
が、流動層１２における流動化開始速度Ｕmfの１〜３
倍、望ましくは１．５〜２倍となるように、流動化ガス
噴込ノズル４２から流動化ガスを噴き込む。Next, the operation of the apparatus for discharging particles from the fluidized bed apparatus shown in FIGS. 1 to 3 will be described. An object to be treated consisting of particles including large lumps is charged onto the gas dispersion plate 12 from the object to be treated inlet 28, and a gas is ejected from the gas dispersion plate 12 to fluidize the particles to form the fluidized bed 12. The processing target is processed (cooling, drying, heating, classification, or a combination thereof), and the processing target (particles) is discharged to the processing target discharge unit 14.
From the product through a particle discharge chute 46 as a product. Exhaust gas containing fine powder discharged from the gas discharge ports 36 and 38 is introduced into a dust collector such as a cyclone and / or a bag filter, and the fine powder is collected and separated. The fluidizing gas is injected from the fluidizing gas injection nozzle 42 on the side of the large chute discharge chute 44 to fluidize the particles in the upper part of the large chute discharge chute 44 and the large chunk enters the large chute discharge chute 44.・ Drop it. As the fluidizing gas, an inert gas such as cold air, heated air, flue gas, or N 2 gas is used.
The fluidizing gas velocity in the upper part of the large chute discharge chute 44 is 1 to 3 of the fluidization start velocity Umf in the fluidized bed 12.
The fluidizing gas is injected from the fluidizing gas injection nozzle 42 so that the fluidizing gas is doubled, preferably 1.5 to 2 times.
【００１５】図４は、本発明の実施の第２形態による流
動層装置からの粒子排出装置の要部を示している。本実
施形態は、処理物排出シュート１６を仕切壁により分割
することなく、処理物排出部１４のガス分散板１０側に
隣接して大塊排出部（大塊排出口）５２ａを設けるとと
もに、この大塊排出部５２ａに大塊排出シュート４４ａ
を接続したものである。他の構成及び作用は、実施の第
１形態の場合と同様である。FIG. 4 shows a main part of a device for discharging particles from a fluidized bed apparatus according to a second embodiment of the present invention. In the present embodiment, a large lump discharge portion (large lump discharge port) 52a is provided adjacent to the gas discharge plate 10 side of the processed material discharge portion 14 without dividing the processed material discharge chute 16 by a partition wall. The large chute discharge chute 44a
Are connected. Other configurations and operations are the same as those in the first embodiment.
【００１６】図５は、本発明の実施の第３形態による流
動層装置からの粒子排出装置の要部を示している。本実
施形態は、大塊排出シュート４４の下部、例えば流動化
ガス噴込ノズル４２の下側を風箱３４側に傾斜させ、こ
の傾斜部５８において、大塊排出シュート４４と粒子排
出シュート４６との間の傾斜仕切壁の一部又は全部を大
塊は通過せず小径粒子は通過するふるい構造部６０と
し、傾斜仕切壁の粒子排出シュート４６側に空間部６２
が形成されるように、傾斜仕切壁の上方端から下方に延
びる空間形成用仕切壁６４を設けて、大塊排出シュート
４４内へもぐり込んだ小径粒子を、ふるい構造部６０で
分級して空間部６２へ落下させて粒子排出シュート４６
へ移動させるように構成したものである。ふるい構造部
６０としては、多数のグリズリバーを設けた構成、金網
を取り付けた構成等が採用される。本実施形態は、大塊
のみを選択的に排出することができるという利点があ
る。他の構成及び作用は、実施の第１形態の場合と同様
である。FIG. 5 shows a main part of a device for discharging particles from a fluidized bed apparatus according to a third embodiment of the present invention. In the present embodiment, the lower part of the large chute discharge chute 44, for example, the lower side of the fluidizing gas injection nozzle 42 is inclined toward the wind box 34 , and the large chunk discharge chute 44 and the particle discharge chute 46 A part or the entirety of the inclined partition wall between the large partition and the small-diameter particles does not pass through the sieve structure section 60, and a space section 62 is provided on the inclined partition wall side of the particle discharge chute 46.
Extending downward from the upper end of the inclined partition wall so that
Provided space for forming the partition walls 64 Ru beauty, large mass discharge chute the small particles that slipped into 44, and classified with a sieve structure 60 is dropped into the space portion 62 grain terminal discharge chute 46
It is configured to be moved to. As the sieve structure section 60, a configuration in which a large number of grizzly bars are provided, a configuration in which a wire mesh is attached, and the like are employed. This embodiment has the advantage that only large lumps can be selectively discharged. Other configurations and operations are the same as those in the first embodiment.
【００１７】[0017]
【発明の効果】本発明は上記のように構成されているの
で、つぎのような効果を奏する。 （１） ガス分散板及び風箱を貫通させて大塊を排出す
る従来方式に比べて、構造が簡単であり、大塊排出シュ
ートは風箱を貫通しないため、処理ガスとして高温ガス
を用いる場合でも、高温ガスに長時間さらされることが
ないので、きわめて安全である。 （２） 流動層内に投入された大塊は、最終的に大塊排
出部（又は処理物排出部）付近の流動層に集まるため、
大塊排出を効率よく行うことができる。また、大塊を排
出することで、ガス分散板上への大塊の堆積、さらに
は、大塊の堆積による流動化異常を防止することができ
る。 （３） 製品粒度を揃える要求がある場合、従来はふる
いで処理していたが、耐熱性の問題や摩耗の問題があっ
た。しかし、本発明の方法及び装置を適用することによ
り、ふるいは不要となり上記の問題を同時に解決するこ
とができる。 （４） 大塊排出シュート下部にグリズリ、金網等のふ
るい構造部を設ける場合は、大塊排出シュートに大塊と
ともに流入した通常粒子を粒子排出シュート側に移動さ
せて、大塊のみを選択的に排出することができる。As described above, the present invention has the following effects. (1) Compared with the conventional method that discharges a large lump by passing through a gas distribution plate and a wind box, the structure is simpler, and a large lump discharge chute does not pass through a wind box. However, it is extremely safe because it is not exposed to hot gas for a long time. (2) Large lumps introduced into the fluidized bed are finally discharged
Because it gathers in the fluidized bed near the discharge section (or treated material discharge section) ,
Large lumps can be efficiently discharged. Further, by discharging the large lump, accumulation of the large lump on the gas dispersion plate, and further, fluidization abnormality due to the accumulation of the large lump can be prevented. (3) In the case where there is a demand for uniformity of the product grain size, the treatment has conventionally been performed with a sieve, but there have been problems of heat resistance and abrasion. However, by applying the method and apparatus of the present invention, a sieve is not required, and the above problems can be solved at the same time. (4) When a sieve structure such as grizzly or wire mesh is provided below the large chute, the normal particles that have flowed into the large chute together with the large chunk are moved to the particle discharge chute, and only the large chunk is selectively used. Can be discharged.
【図１】本発明の実施の第１形態による流動層装置から
の粒子排出装置を示す概略断面構成図である。FIG. 1 is a schematic sectional configuration diagram showing a device for discharging particles from a fluidized bed device according to a first embodiment of the present invention.
【図２】図１における処理物排出部まわりの詳細で、本
発明の実施の第１形態による粒子排出装置の要部を示す
拡大断面説明図である。FIG. 2 is an enlarged cross-sectional explanatory view showing a main part of the particle discharge device according to the first embodiment of the present invention, showing details around a processed material discharge portion in FIG. 1;
【図３】図１における処理物排出部まわりの平断面説明
図である。FIG. 3 is an explanatory plan view of a section around a processed material discharge section in FIG. 1;
【図４】本発明の実施の第２形態による流動層装置から
の粒子排出装置の要部を示す平断面説明図である。FIG. 4 is an explanatory plan view showing a main part of a device for discharging particles from a fluidized bed device according to a second embodiment of the present invention.
【図５】本発明の実施の第３形態による流動層装置から
の粒子排出装置の要部を示す拡大断面説明図である。FIG. 5 is an enlarged sectional explanatory view showing a main part of a device for discharging particles from a fluidized bed device according to a third embodiment of the present invention.
【図６】従来の流動層装置の一例を示す概略断面構成図
である。FIG. 6 is a schematic sectional view showing an example of a conventional fluidized bed apparatus.
【図７】図６における処理物排出部まわりの詳細を示す
拡大断面説明図である。FIG. 7 is an enlarged cross-sectional explanatory view showing details around a processed material discharge unit in FIG. 6;
１０ ガス分散板 １２ 流動層 １４ 処理物排出部 １６ 処理物排出シュート １８ 移動層 ２０ 仕切部材 ２２ 大塊 ２４ 上流側の室 ２６ 下流側の室 ２８ 被処理物投入口 ３０ 通路 ３２、３４ 風箱 ３６、３８ ガス排出口 ４２ 流動化ガス噴込ノズル ４４、４４ａ 大塊排出シュート ４６ 粒子排出シュート ４８ 装置本体 ５０ 仕切壁 ５２、５２ａ 大塊排出部 ５４ 大塊排出機 ５６ 粒子排出機 ５８ 傾斜部 ６０ ふるい構造部 ６２ 空間部 ６４ 空間形成用仕切壁 DESCRIPTION OF SYMBOLS 10 Gas dispersion plate 12 Fluidized bed 14 Processed material discharge part 16 Processed material discharge chute 18 Moving layer 20 Partition member 22 Large block 24 Upstream room 26 Downstream room 28 Workpiece input port 30 Passage 32, 34 Wind box 36 , 38 Gas outlet 42 Fluidized gas injection nozzle 44, 44a Large lump discharge chute 46 Particle discharge chute 48 Main unit 50 Partition wall 52, 52a Large lump discharge section 54 Large lump discharger 56 Particle discharger 58 Inclined section 60 Sieve Structure part 62 Space part 64 Partition wall for space formation
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ２６Ｂ 3/08 Ｆ２６Ｂ 3/08 Ｆ２７Ｂ 15/09 Ｆ２７Ｂ 15/09 15/10 15/10 (56)参考文献 特開 平８−299909（ＪＰ，Ａ) 特開 平９−201571（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 8/00 - 8/46 B07B 4/00 B07B 4/08 C10B 57/08 C10B 57/10 F26B 3/08 F27B 15/09 F27B 15/10 ──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 7 Identification code FI F26B 3/08 F26B 3/08 F27B 15/09 F27B 15/09 15/10 15/10 (56) References JP-A-8- 299909 (JP, A) JP-A-9-201571 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B01J 8/00-8/46 B07B 4/00 B07B 4/08 C10B 57/08 C10B 57/10 F26B 3/08 F27B 15/09 F27B 15/10
Claims (6)
む粒子からなる被処理物をガス分散板上に投入するとと
もに、ガス分散板下側からガスを導入し粒子を流動化さ
せて流動層を形成させることにより、被処理物を処理
し、流動層端部近傍に設けられた処理物排出部から処理
物排出シュートを介して粒子を抜き出す方法において、 処理物排出部のガス分散板側に隣接して大塊排出部を設
けるとともに、この大塊排出部に大塊排出シュートを接
続し、大塊排出シュートの側部から流動化ガスを噴き込
んで大塊排出シュート内上部の粒子を流動化させ、大塊
排出部付近の流動層に集まった流動化異常を起こす原因
となる大塊を大塊排出シュート内に進入・落下させるこ
とを特徴とする流動層装置からの粒子排出方法。1. An object to be treated comprising particles containing large lumps which causes fluidization abnormality is charged onto a gas dispersion plate, and a gas is introduced from the lower side of the gas dispersion plate to fluidize the particles and flow. In the method of processing an object to be processed by forming a layer and extracting particles from a processed material discharge unit provided near the end of the fluidized bed through a processed material discharge chute, a gas dispersion plate side of the processed material discharge unit A large lump discharge section is provided adjacent to the large lump discharge section, and a large lump discharge chute is connected to the large lump discharge section. It is fluidized, from the fluidized bed apparatus, characterized in that to enter or dropping a large mass causing problems related to fluidized abnormality gathered in the fluidized layer near Daikatamari <br/> discharge portion Daikatamari discharge chute Particle emission method.
ガス速度が、流動層における流動化開始速度の１〜３倍
となるように、大塊排出シュートの側部から流動化ガス
を噴き込む請求項１記載の流動層装置からの粒子排出方
法。2. A method for injecting a fluidizing gas from a side portion of a mass discharge chute such that a fluidizing gas velocity in an upper portion of the mass discharge chute is 1 to 3 times a fluidization start speed in the fluidized bed. Item 10. A method for discharging particles from a fluidized bed apparatus according to Item 1.
上側にガス分散板を介して流動層を形成し、本体の一端
に流動化異常を起こす原因となる大塊を含む粒子を導入
するための被処理物投入口を、本体の他端に処理物排出
部を、本体の上部に微粉を含む排ガスを抜き出すための
ガス排出口を有し、処理物排出部に処理物排出シュート
が接続された流動層装置において、 処理物排出シュート内を、ガス分散板側に大塊排出シュ
ートが、本体端部側に粒子排出シュートが形成されるよ
うに仕切壁で分割し、大塊排出シュートの側部に、大塊
排出シュート内上部の粒子を流動化させ、処理物排出部
付近の流動層に集まった流動化異常を起こす原因となる
大塊を大塊排出シュート内に進入・落下しやすくするた
めの流動化ガス噴込ノズルを設けたことを特徴とする流
動層装置からの粒子排出装置。3. A main body has a wind box at a lower portion thereof, a fluidized bed is formed above the wind box via a gas dispersion plate, and a large mass which causes fluidization abnormality is included at one end of the main body. It has a workpiece inlet for introducing particles, a workpiece outlet at the other end of the main body, and a gas outlet for extracting exhaust gas containing fine powder at the top of the body, and a workpiece outlet at the workpiece outlet. In the fluidized bed apparatus to which the discharge chute is connected, the inside of the processed material discharge chute is divided by a partition wall so that a large lump discharge chute is formed on the gas dispersion plate side and a particle discharge chute is formed on the main body end side. At the side of the lump discharge chute, the particles in the upper part of the lump discharge chute are fluidized, and the lump that causes fluidization abnormalities gathered in the fluidized bed near the treated material discharge section is discharged. A fluidizing gas injection nozzle is provided to make it easier to enter and fall into the chute A device for discharging particles from a fluidized bed device, characterized by comprising:
上側にガス分散板を介して流動層を形成し、本体の一端
に流動化異常を起こす原因となる大塊を含む粒子を導入
するための被処理物投入口を、本体の他端に処理物排出
部を、本体の上部に微粉を含む排ガスを抜き出すための
ガス排出口を有し、処理物排出部に処理物排出シュート
が接続された流動層装置において、 処理物排出部のガス分散板側に隣接して大塊排出部を設
けるとともに、この大塊排出部に大塊排出シュートを接
続し、大塊排出シュートの側部に、大塊排出シュート内
上部の粒子を流動化させ、大塊排出部付近の流動層に集
まった流動化異常を起こす原因となる大塊を大塊排出シ
ュート内に進入・落下しやすくするための流動化ガス噴
込ノズルを設けたことを特徴とする流動層装置からの粒
子排出装置。4. A main body having a wind box at a lower portion thereof, a fluidized bed formed above the wind box via a gas dispersion plate, and a large mass which causes fluidization abnormality at one end of the main body. It has a workpiece inlet for introducing particles, a workpiece outlet at the other end of the main body, and a gas outlet for extracting exhaust gas containing fine powder at the top of the body, and a workpiece outlet at the workpiece outlet. In the fluidized-bed apparatus to which the discharge chute is connected, a large lump discharge section is provided adjacent to the gas dispersion plate side of the processed material discharge section, and a large lump discharge chute is connected to the large lump discharge section. On the side of the large chunk discharge chute, the large chunks causing fluidization abnormalities gathered in the fluidized bed near the large chunk discharge section enter and fall into the large chunk discharge chute. Characterized by having a fluidizing gas injection nozzle for facilitating flow Particle discharge device for the layer system.
上側にガス分散板を介して流動層を形成し、本体の一端
に流動化異常を起こす原因となる大塊を含む粒子を導入
するための被処理物投入口を、本体の他端に処理物排出
部を、本体の上部に微粉を含む排ガスを抜き出すための
ガス排出口を有し、処理物排出部に処理物排出シュート
が接続された流動層装置において、 処理物排出シュート内を、ガス分散板側に大塊排出シュ
ートが、本体端部側に粒子排出シュートが形成されるよ
うに仕切壁で分割し、大塊排出シュートの側部に、大塊
排出シュート内上部の粒子を流動化させ、処理物排出部
付近の流動層に集まった流動化異常を起こす原因となる
大塊を大塊排出シュート内に進入・落下しやすくするた
めの流動化ガス噴込ノズルを設け、大塊排出シュートの
下部を風箱側に傾斜させ、この傾斜部において、大塊排
出シュートと粒子排出シュートとの間の傾斜仕切壁の少
なくとも一部を大塊は通過せず小径粒子は通過するふる
い構造とし、傾斜仕切壁の粒子排出シュート側に空間部
が形成されるように、傾斜仕切壁の上方端から下方に延
びる空間形成用仕切壁を設け、大塊排出シュート内にも
ぐり込んだ小径粒子を空間部に落下させて粒子排出シュ
ートへ移動させるように構成されたことを特徴とする流
動層装置からの粒子排出装置。5. A wind box is provided at a lower portion of the main body, a fluidized bed is formed above the wind box via a gas dispersion plate, and a large lump which causes fluidization abnormality is included at one end of the main body. It has a workpiece inlet for introducing particles, a workpiece outlet at the other end of the main body, and a gas outlet for extracting exhaust gas containing fine powder at the top of the body, and a workpiece outlet at the workpiece outlet. In the fluidized bed apparatus to which the discharge chute is connected, the inside of the processed material discharge chute is divided by a partition wall so that a large lump discharge chute is formed on the gas dispersion plate side and a particle discharge chute is formed on the main body end side. At the side of the lump discharge chute, the particles in the upper part of the lump discharge chute are fluidized, and the lump that causes fluidization abnormalities gathered in the fluidized bed near the treated material discharge section is discharged. Provide a fluidizing gas injection nozzle to make it easy to enter and fall into the chute, The lower part of the chunk discharge chute is tilted toward the wind box , and
At least a part of the inclined partition wall between the discharge chute and the particle discharge chute has a sieve structure in which large lumps do not pass and small particles pass, and a space portion is provided on the particle discharge chute side of the inclined partition wall.
Extending the so that but is formed downward from the upper end of the inclined partition wall
The space forming the partition walls Ru beauty provided, particles discharged from the fluidized bed apparatus characterized by being configured to move the small particles that sunk into the large lump discharge chute is dropped into the space portion to the particle discharge chute apparatus.
くした請求項３、４又は５記載の流動層装置からの粒子
排出装置。6. The apparatus for discharging particles from a fluidized bed apparatus according to claim 3, wherein the upper end of the partition wall is higher than the upper surface of the gas dispersion plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10137705A JP3074622B2 (en) | 1998-04-30 | 1998-04-30 | Method and apparatus for discharging particles from fluidized bed apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10137705A JP3074622B2 (en) | 1998-04-30 | 1998-04-30 | Method and apparatus for discharging particles from fluidized bed apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11309364A JPH11309364A (en) | 1999-11-09 |
| JP3074622B2 true JP3074622B2 (en) | 2000-08-07 |
Family
ID=15204904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10137705A Expired - Fee Related JP3074622B2 (en) | 1998-04-30 | 1998-04-30 | Method and apparatus for discharging particles from fluidized bed apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3074622B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4455388B2 (en) * | 2005-04-01 | 2010-04-21 | 株式会社神戸製鋼所 | Dry separation device |
| JP2007216171A (en) * | 2006-02-17 | 2007-08-30 | Meiji Univ | Apparatus and method for separating powder |
| JP4641508B2 (en) * | 2006-05-30 | 2011-03-02 | 株式会社神戸製鋼所 | Dry separation device |
| JP6819267B2 (en) * | 2016-12-15 | 2021-01-27 | 株式会社Ihi | Fluidized bed system |
-
1998
- 1998-04-30 JP JP10137705A patent/JP3074622B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11309364A (en) | 1999-11-09 |
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