JP2759210B2 - Fluidized bed flow stabilizer - Google Patents
Fluidized bed flow stabilizerInfo
- Publication number
- JP2759210B2 JP2759210B2 JP63265800A JP26580088A JP2759210B2 JP 2759210 B2 JP2759210 B2 JP 2759210B2 JP 63265800 A JP63265800 A JP 63265800A JP 26580088 A JP26580088 A JP 26580088A JP 2759210 B2 JP2759210 B2 JP 2759210B2
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- medium
- fluidized bed
- fluidized medium
- bed furnace
- 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
- 239000003381 stabilizer Substances 0.000 title 1
- 239000002245 particle Substances 0.000 claims description 14
- 239000011362 coarse particle Substances 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 15
- 238000002485 combustion reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01003—Ash crushing means associated with ash removal means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は流動層炉に係り、特に流動媒体の肥大化，球
状化による流動不安定を解消する流動層の流動安定化装
置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluidized bed furnace, and more particularly, to a fluidized bed flow stabilizing apparatus that eliminates flow instability due to enlargement and spheroidization of a fluidized medium.
従来は、流動媒体の肥大化や球状化に対しては流動層
炉より流動媒体を抜き出し、それを廃棄し、新しい媒体
を補充することで対処する方法と、水洗により流動媒体
から付着物を溶解除去できる場合は、該流動媒体を水洗
して戻す方法があった。Conventionally, for the enlargement and spheroidization of the fluidized medium, a method of removing the fluidized medium from the fluidized bed furnace, discarding it and replenishing it with a new medium, and dissolving the deposits from the fluidized medium by washing with water When the fluid medium can be removed, there is a method of washing the fluid medium back with water.
上記従来技術は、前者の新しい流動媒体を補充する方
法では、まだ使用できる流動媒体の多くが無駄に廃棄さ
れる問題があった。また、後者の水洗方法では、付着物
が水溶性でないものに対しては全く効果がない問題があ
った。従って、上記従来技術は、流動媒体の管理につい
て配慮されておらず、流動媒体の肥大化，球状化によっ
て、徐々に流動化が不安定となり、空気量を増大して流
動させて運転しなければならず、助燃量および流動層内
の燃焼効果が低下することになる。In the above-mentioned prior art, the former method of replenishing a new fluid medium has a problem that much of the fluid medium that can still be used is wasted. In addition, the latter washing method has a problem in that it has no effect on substances whose deposits are not water-soluble. Therefore, the above prior art does not take care of the management of the fluid medium, and the fluidization becomes gradually unstable due to the enlargement and spheroidization of the fluid medium. However, the amount of auxiliary combustion and the effect of combustion in the fluidized bed are reduced.
本発明の目的は、これらの流動媒体を、粒径を管理し
て安定した流動層を得ることにある。An object of the present invention is to obtain a stable fluidized bed by controlling the particle size of these fluidized media.
上記目的を達成するため、本発明は、流動層炉内から
取り出された流動媒体を冷却する流動媒体クーラーと、
この流動媒体クーラーで冷却された流動媒体を破砕する
破砕手段と、破砕された流動媒体から粒径の粗いものと
細かいものとを分離除去する分級手段と、分級手段から
細かい流動媒体を流動層炉内に流動媒体を戻す流動媒体
返送ラインと、粗い流動媒体を破砕手段に戻す粗粒戻り
管とを備えた流動層の流動安定化装置である。In order to achieve the above object, the present invention provides a fluidized medium cooler for cooling a fluidized medium taken out of a fluidized bed furnace,
Crushing means for crushing the fluidized medium cooled by the fluidized medium cooler, classification means for separating and removing coarse and fine particles from the crushed fluidized medium, and fine fluidized medium from the classified means It is a fluidized bed flow stabilizing device including a fluidized medium return line for returning a fluidized medium into the inside and a coarse particle return pipe for returning a coarse fluidized medium to crushing means.
また、流動媒体返送ラインにより返送される流動媒体
の粒径に対応して流動層炉に空気を送る流動用空気供給
部の該空気量を規制する制御部を備えることが望まし
い。In addition, it is desirable to have a control unit that regulates the amount of air in the fluidizing air supply unit that sends air to the fluidized bed furnace according to the particle size of the fluidized medium returned by the fluidized media return line.
ここで、流動媒体の形状を球状から多角形状に破砕
し、粒径をそろえることが望ましい。Here, it is desirable that the shape of the fluidized medium be crushed from a spherical shape to a polygonal shape to make the particle diameter uniform.
流動層炉より、肥大化，球状化した流動媒体を抜き出
し、媒体クーラーを通して該流動媒体の温度を下げた
後、破砕手段に投入する。そこで流動媒体を破砕後、篩
等よりなる分級手段に投入し粒径の粗いものは再度破砕
機に戻し破砕する。篩目を通過した細いものは廃棄され
る。粒径のそろった流動媒体が返送ラインから前記流動
層炉内に戻される。The enlarged and spheroidized fluidized medium is extracted from the fluidized bed furnace, and the temperature of the fluidized medium is lowered through a medium cooler, and then the crushed means is introduced. Then, after the fluid medium is crushed, it is put into a classification means comprising a sieve or the like, and those having a coarse particle diameter are returned to the crusher again and crushed. Fines that have passed through the sieve are discarded. A fluid medium having a uniform particle size is returned from the return line into the fluidized bed furnace.
ここで篩は２重篩等として、各面の粒径を変化させ
て、その流動媒体の粒径に最適な空気量を設定し、流動
用空気供給部から流動層炉内に空気が供給される。これ
により、安定した流動層を得る。Here, the sieve is a double sieve or the like, by changing the particle size of each surface to set an optimal amount of air for the particle size of the fluidized medium, and air is supplied from the fluidizing air supply unit into the fluidized bed furnace. You. Thereby, a stable fluidized bed is obtained.
以下、本発明の一実施例を図示の実施例に基いて詳細
に説明する。第１図は本発明に係る装置の構成図であ
る。Hereinafter, an embodiment of the present invention will be described in detail based on the illustrated embodiment. FIG. 1 is a configuration diagram of an apparatus according to the present invention.
流動層炉１の多孔板３上に流動媒体２を有し、流動用
ファン７により流動用空気を送ることにより流動媒体２
が流動し、燃焼物を燃焼させる。この流動層炉１におい
て、燃焼物の物性により、流動媒体２に付着生成する成
分が存在する場合には、流動媒体２の粒径が肥大化し、
更に球状に変化することにより、流動媒体２の形状係数
が変化し流動性が悪くなって、燃焼が不安定となってく
る。その結果燃焼量の低下，助燃量の増大が起こり、流
動性を良くするため空気量を増大する。それにより助燃
量も更に増大し悪循環となる。The fluidized medium 2 is provided on the perforated plate 3 of the fluidized bed furnace 1 by flowing fluidized air by the fluidizing fan 7.
Flows and burns the combustion material. In the fluidized bed furnace 1, if there is a component that adheres to and forms on the fluidized medium 2 due to the physical properties of the combustion material, the particle size of the fluidized medium 2 increases,
When the fluid medium 2 further changes spherically, the shape factor of the fluid medium 2 changes, the fluidity deteriorates, and the combustion becomes unstable. As a result, the amount of combustion decreases and the amount of auxiliary combustion increases, and the amount of air increases in order to improve fluidity. As a result, the amount of auxiliary combustion further increases, resulting in a vicious cycle.
これを解消するため、流動層下部の流動媒体２の抜出
しダンパ８を起動し、抜出し管４を通して流動媒体２の
抜き出し、媒体クーラー９を通して温度を下げた後、破
砕機10に投入する。破砕機10により肥大化した流動媒体
２を破砕し、球状の媒体を多角形の流動媒体２にし、形
状係数を良くした後、分級手段である多面形２重篩11に
導入する。多面形２重篩11は、各面の篩目開きを変えて
おき、第２図に示した如く、内面の篩目は租篩目12とし
て、これをオーバーする粒径の流動媒体は粗粒戻り管16
を通って破砕機10に戻し再び破砕させる。外面の篩目は
細目篩13として、これを通過したものは細粒廃棄管18を
通って廃棄される。粗目，細目の２重篩の中間の粒径の
流動媒体２を返送ラインである流動層媒体戻り管17を通
って流動層炉１に戻して循環する。To solve this, the extraction damper 8 for extracting the fluid medium 2 below the fluidized bed is activated, the fluid medium 2 is extracted through the extraction pipe 4, the temperature is reduced through the medium cooler 9, and then the crusher 10 is charged. The swelling fluid medium 2 is crushed by a crusher 10, the spherical medium is converted into a polygonal fluid medium 2, the shape factor is improved, and then introduced into a polyhedral double sieve 11 which is a classification means. In the polyhedral double sieve 11, the sieve opening on each side is changed, and as shown in FIG. Return pipe 16
And returned to the crusher 10 to be crushed again. The mesh on the outer surface is a fine sieve 13, and what has passed through the fine sieve 13 is discarded through a fine-grain waste pipe 18. The fluidized medium 2 having an intermediate particle diameter between the coarse and fine double sieves is circulated back to the fluidized bed furnace 1 through a fluidized bed medium return pipe 17 which is a return line.
15は空気制御ダンパを示し、20は該ダンパ15の動作を
規制する制御部を示す。流動層炉１内に空気を送る流動
用空気供給部は前記ダンパ15及び制御部20をその構成要
素に含んで形成されている。制御部20は多面形２重篩11
の振動機14と接続されて、流動層炉１内に返送される流
動媒体２の粒径に対応して流動用空気の供給量を規制す
る。その他、図において、５は燃焼物投入口、６は燃焼
ガス出口、19は助燃バーナを示す。Reference numeral 15 denotes an air control damper, and reference numeral 20 denotes a control unit that regulates the operation of the damper 15. The fluidizing air supply unit for sending air into the fluidized bed furnace 1 is formed by including the damper 15 and the control unit 20 in its components. The control unit 20 is a polyhedral double sieve 11
To regulate the supply amount of the flowing air in accordance with the particle size of the fluidized medium 2 returned into the fluidized-bed furnace 1. In addition, in the figure, reference numeral 5 denotes a combustion material inlet, 6 denotes a combustion gas outlet, and 19 denotes an auxiliary burner.
次に作用を説明する。流動媒体２を抜き出し媒体クー
ラー９により冷却することにより、破砕機10および振動
する多面形２重篩11の組合せにおいて、篩い目によって
そろえられる流動媒体２の粒径に適合した空気量に流動
用ファンを制御することにより、連続して安定した流動
層が得られ、安定した燃焼が得られる。Next, the operation will be described. By extracting the flowing medium 2 and cooling it by the medium cooler 9, in the combination of the crusher 10 and the vibrating polyhedral double sieve 11, the flow fan is adjusted to an air amount suitable for the particle size of the flowing medium 2 aligned by the sieve. , A stable fluidized bed is obtained continuously and stable combustion is obtained.
本発明によれば、流動媒体の粒径をそろえることによ
り、付着物の付いたものもその粒径によっては最適な流
動媒体となり得るため補給する流動媒体も少なくて済
む。According to the present invention, by making the particle diameters of the fluidized media uniform, even those with attached matter can be the optimal fluidized media depending on the particle size, so that the fluidized media to be replenished can be reduced.
何よりも破砕手段により形状及び粒径が最適なものに
そろえられるため流動係数が改善され流動層の流動状態
が安定して持続されることになる。Above all, the shape and particle size are adjusted to the optimum by the crushing means, so that the fluidity coefficient is improved and the fluidized state of the fluidized bed is stably maintained.
第１図は本発明に係る流動層の流動安定化装置の一実施
例を示す構成図、第２図は第１図のII−II線断面図を示
す。 １……流動層炉、２……流動媒体、９……媒体クーラ
ー、10……破砕機、11……多面形２重篩、15……空気制
御ダンパ、17……返送ライン、20……制御部。FIG. 1 is a block diagram showing one embodiment of a fluidized bed fluid stabilization apparatus according to the present invention, and FIG. 2 is a sectional view taken along the line II-II of FIG. 1 ... fluidized bed furnace, 2 ... fluidized medium, 9 ... medium cooler, 10 ... crusher, 11 ... polyhedral double sieve, 15 ... air control damper, 17 ... return line, 20 ... Control unit.
Claims (2)
却する流動媒体クーラーと、この流動媒体クーラーで冷
却された流動媒体を破砕する破砕手段と、破砕された流
動媒体から粒径の粗いものと細かいものとを分離除去す
る分級手段と、分級手段から細かい流動媒体を前記流動
層炉内に流動媒体を戻す流動媒体返送ラインと、粗い流
動媒体を前記破砕手段に戻す粗粒戻り管とを備えた流動
層の流動安定化装置。1. A fluidized medium cooler for cooling a fluidized medium taken out of a fluidized bed furnace, crushing means for crushing the fluidized medium cooled by the fluidized medium cooler, and a crushed fluidized medium having a coarse particle diameter. Classification means for separating and removing things and fine things, a fluidized medium return line for returning a fine fluidized medium from the classification means into the fluidized bed furnace, a coarse particle return pipe for returning a coarse fluidized medium to the crushing means, Fluidized bed flow stabilizing device provided with.
ンにより返送される流動媒体の粒径に対応して前記流動
層炉に空気を送る流動用空気供給部の該空気量を規制す
る制御部を備えた流動層の流動安定化装置。2. A controller according to claim 1, wherein the controller controls the amount of air in a fluidizing air supply unit that sends air to the fluidized bed furnace in accordance with the particle diameter of the fluidized medium returned by the fluidized medium return line. Fluidized bed flow stabilizing device provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63265800A JP2759210B2 (en) | 1988-10-21 | 1988-10-21 | Fluidized bed flow stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63265800A JP2759210B2 (en) | 1988-10-21 | 1988-10-21 | Fluidized bed flow stabilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02115604A JPH02115604A (en) | 1990-04-27 |
| JP2759210B2 true JP2759210B2 (en) | 1998-05-28 |
Family
ID=17422216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63265800A Expired - Fee Related JP2759210B2 (en) | 1988-10-21 | 1988-10-21 | Fluidized bed flow stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2759210B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61173017A (en) * | 1985-01-24 | 1986-08-04 | Ebara Corp | Method of incinerating refuse by fluidized bed and fluidized-bed incinerator thereof |
| JPH0324972Y2 (en) * | 1985-02-13 | 1991-05-30 |
-
1988
- 1988-10-21 JP JP63265800A patent/JP2759210B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02115604A (en) | 1990-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69911915D1 (en) | WIRBELSCHICHTTROCKNUNGSKLASSIERER | |
| WO1994024508A1 (en) | Apparatus for carrying out a physical and/or chemical process, such as a heat exchanger | |
| Neugebauer et al. | On the dynamics and control of continuous fluidized bed layering granulation with screen-mill-cycle | |
| CN109877330A (en) | Device and method for producing spherical metal powder for 3D printing | |
| JPH02227148A (en) | Cold crushing method and apparatus | |
| JPH0515900A (en) | Method and device for drying water-containing sludge | |
| JP2759210B2 (en) | Fluidized bed flow stabilizer | |
| JPH11129055A (en) | Heat treatment of metal casting and sand recovery in furnace | |
| SK126397A3 (en) | Device of three-stage fluidized bed furnace type for reducing fine iron ore | |
| USRE19556E (en) | Method of controlling character | |
| JPH10329136A (en) | Method for producing granulated material and apparatus for producing granulated material | |
| CN114888307A (en) | Recovery device and method for 3D printing waste powder | |
| US4427372A (en) | Method and apparatus for continuously burning particles in air stream in a vertical furnace | |
| CN109467096A (en) | A production method and device for preparing high-purity spherical quartz sand and high-purity spherical quartz powder by using quartz tailings | |
| JP2535269B2 (en) | Fixed-bed reaction tank | |
| TW201036687A (en) | Powder rotation screening apparatus with real-time control | |
| JP3477581B2 (en) | Granulation method | |
| CN118723998B (en) | Production process of low-radioactivity high-purity superfine spherical silicon micropowder | |
| JPS62183849A (en) | Peripheral wall jet stream type fluidized bed apparatus | |
| Fang | Study on Basic Model and Application of Fluidized Bed Granulation Technology | |
| JPH11131101A (en) | Granulation method of metal powder for powder metallurgy and granulation apparatus | |
| JPH09310109A (en) | Blast furnace charge distribution control method | |
| JP3911599B2 (en) | Pressurized fluidized bed boiler | |
| JPH0510238Y2 (en) | ||
| JPH02192583A (en) | Drying of fine particle and drying device for fine particle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |