JPS62241545A - Starting method for fluidized kiln - Google Patents
Starting method for fluidized kilnInfo
- Publication number
- JPS62241545A JPS62241545A JP8435486A JP8435486A JPS62241545A JP S62241545 A JPS62241545 A JP S62241545A JP 8435486 A JP8435486 A JP 8435486A JP 8435486 A JP8435486 A JP 8435486A JP S62241545 A JPS62241545 A JP S62241545A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- kiln
- clinker
- fluidized kiln
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 11
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 13
- 238000010304 firing Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 13
- 239000000725 suspension Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 2
- 238000005243 fluidization Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 241000208140 Acer Species 0.000 description 1
- 241000473391 Archosargus rhomboidalis Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/001—Calcining
- B01J6/004—Calcining using hot gas streams in which the material is moved
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、流＊ａ成炉の起動方法に関するもので、詳し
くは、セメントやアルミナなどの粉末原料を流動焼成炉
で焼成するに際して、その・ 流動焼成炉の起動方法に
関するものである口従来の技術
従来のセメント粉末原料′Ｊｔ焼成する流動焼成炉を壁
の状態にして流動焼成炉のバーナに着火するとともに流
動焼成炉内に璧気を導入して該炉内を昇温させ、つぎに
、流動媒体としての種クリンカを該炉内に投入し、該炉
内にｍ記橿クリンカによる過当な層高とは度（約１５５
０℃）の流動Ｊ−を形成させ、こののち、セメントクリ
ンカを該炉内に投入していた。そして、前記櫨クリンカ
としては、所定の粒径範囲（１〜５ ａｍ ）に揃えた
ものとするが、その形状については、流ＴＪｄＪ焼成に
よって得られた球状（後述する形状係数が１）のセメン
トクリンカをそのｉま使用していた。[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a method for starting a flow*a furnace, and more specifically, when firing powder raw materials such as cement or alumina in a fluidized furnace, the flow Related to the method of starting up a kiln: Conventional technology A fluidized kiln for sintering conventional cement powder raw materials is made into a wall, and the burner of the kiln is ignited, and air is introduced into the kiln. Then, a seed clinker as a fluidizing medium is introduced into the furnace, and the excessive layer height due to the m-threaded clinker is increased to approximately 155 degrees.
After that, cement clinker was introduced into the furnace. The above-mentioned oak clinker is made to have a predetermined particle size range (1 to 5 am), but its shape is a spherical cement (with a shape factor of 1, which will be described later) obtained by TJdJ firing. I was just using clinker.
発明が解決しよりとする問題点
ｍ述のように、従来の流動焼成炉の起動方法においては
、流動焼成炉の起動時に？ＪｔＦ、鯛媒体として使用す
る橿クリンカの形状が球状でめるたが１である九め、−
瞬停止しｆｃり、塊ができたりして、初期の流動が良好
でないという問題点がある０本発明は、このような問題
点を解決しようとするものである。すなわち、本発明は
、流動焼成炉内の初期の流動を良好にし、立上り時の運
転を容易にすることができるａ励焼内炉の起動方法を提
・供することを目的とするものである。Problems to be Solved by the Invention As mentioned above, in the conventional method of starting up a fluidized fluidized kiln, what happens when the fluidized kiln is started? JtF, the shape of the clinker used as a sea bream medium is spherical and the diameter is 1, -
There is a problem that the initial flow is not good due to instantaneous stoppage and formation of lumps.The present invention aims to solve these problems. That is, an object of the present invention is to provide a method for starting an a-excited inner furnace that can improve the initial flow in the fluidized fluidized furnace and facilitate the operation at startup.
問題点を解決するための手段
流ｊｆｌ成炉内炉動時に使用する櫨クリンカの形状係数
を０．６〜００．８とした。すなわち、本発明の構成は
、粉末原料を流ＤＩＪｇ８成する流動焼成炉の起動時の
流動媒体として、形状係数が０．６〜０．８の櫨クリン
カを用い、該流ＭＪａ成炉内炉部に前記櫨クリンカによ
る高温の流動層全形成させたのち、該流動焼成炉に粉末
原料を投入することを特徴としている。Measures to Solve the Problems The shape factor of the oak clinker used during operation in the jfl forming furnace was set to 0.6 to 00.8. That is, the configuration of the present invention uses Hashi clinker having a shape factor of 0.6 to 0.8 as a fluidizing medium at the time of startup of a fluidized firing furnace that forms powder raw materials in a flow DIJg8, and The method is characterized in that after a high-temperature fluidized bed is completely formed using the Haji clinker, the powder raw material is charged into the fluidized fluidized kiln.
作用
流動焼成炉の起動時の流動媒体として便用する橿クリン
カの形状係数の上限が０．８である友め、形状係数が１
である従来の橿クリンカのような一瞬停止などの流動悪
化がなく、ｔｈｅその形状係数の下限が０．６であるた
め、流動焼成炉の７リーボードへの飛散などがなく、シ
たがって、起動時のセットされた風速に対して初期の流
動が良好となり、立上り時の運転が容易となるＯ
実施例
図は本発明の方法を実施する装置の一例を示している０
図において、１はセメントの粉末原料ｔ′崗成する流動
焼成炉、２は前記流動焼成炉１で焼成された。＠ｌｉ温
のクリンカを導入してそのクリンカを窒気によって急冷
するクー２．３は前記流動焼成炉１に橿クリンカを供給
する櫨クリンカ供給装置、４は生排風愼、５はセメント
粉末原料供給装置、６はサスペンションプレヒータの最
上段サイクロン、７は最上段サイクロン、８は仮焼炉、
９は前記流ｌＩｈ焼成炉１に設けられたバーナ、１０は
前記クー２２からの排気を該訛ｊｌｌｌ焼成炉１に供給
する燃焼用二次空気ダクトでるる。The upper limit of the shape factor of the rod clinker, which is conveniently used as a fluid medium at the time of startup of the working fluidized kiln, is 0.8, and the shape factor is 1.
There is no flow deterioration such as momentary stoppage like with conventional rod clinker, and the lower limit of its shape factor is 0.6, so there is no scattering to the 7 Lee board of the fluidized kiln, and therefore, The initial flow is good for the set wind speed at startup, and operation at startup is easy.Example diagram shows an example of an apparatus for carrying out the method of the present invention0
In the figure, reference numeral 1 indicates a fluidized firing furnace in which cement powder raw material t' is produced, and reference numeral 2 indicates a cement fired in the fluidized fluidized firing furnace 1. 2.3 is a clinker supply device that supplies clinker to the fluidized fluidized kiln 1; 4 is a fresh air exhaust; and 5 is a cement powder raw material. Supply device, 6 is the uppermost cyclone of the suspension preheater, 7 is the uppermost cyclone, 8 is the calciner,
9 is a burner provided in the firing furnace 1, and 10 is a secondary air duct for combustion that supplies exhaust gas from the cooler 22 to the firing furnace 1.
図示のように構成されたセメント流ｋＡｆｉ成装置にお
ける流ｓｂ焼成炉１の起動方伝は、まず、流動焼成炉１
を望の状悪にしてバーナ９に庸火するとともに６（ｔ
ｍ ｍ内炉１内に窒気を導入して流動焼成炉１内を昇温
させ、つぎに、後述する流動媒体としてのｉクリンカｔ
−遣クリンカ供給ｇ＆ｆ３から流＊ｍ成内炉内に投入し
、流動焼成炉１内にｌ！ｔｒ記檀クリンカによるノー高
比約１．５の層高と約１５５０°Ｃの温度のｄｄ層全全
形成せ、こののち、櫨りリンカ供給装＋ｔ３からの橿ク
リンカの投入を停止するとともにセメント粉末原料供ｍ
ｍｙｌｔ ５からサスペンションプレヒータなどの所定
の経路を経て流ｇＩＪｍ成炉１内炉１内ントの粉末原料
を投入する。The startup procedure of the flow sb kiln furnace 1 in the cement flow kAfi forming apparatus configured as shown in the figure will first be explained as follows.
6 (t
Nitrogen is introduced into the inner furnace 1 to raise the temperature inside the fluidized firing furnace 1, and then an i clinker t as a fluidized medium, which will be described later, is introduced.
- A flow of clinker supply g&f3 is introduced into the fluidized fluidized kiln furnace 1, and l! After forming the entire DD layer with a no-height ratio of about 1.5 and a temperature of about 1550°C using the tr tan clinker, the injection of the clinker from the clinker supply device + T3 is stopped and cement is added. Powder raw material supply
The powder raw material in the furnace 1 is fed from the mylt 5 through a predetermined path such as a suspension preheater.
ここで、本発明においては、櫨クリンカとしては、形状
係数が０．６〜０．８のもの會庚用する。その櫨クリン
カの裏這例としては、流動焼成されたままのセメントク
リンカは球形である友め、すなわち、形状係数が１であ
る友め、その球形のクリンカを破砕機にかけて破砕して
形状係叔ｔ０．６〜０．８下げた多面体のクリンカとし
、これを適当に面分けをして、その代表寸法を１〜５ｍ
ｓの範囲に揃える。Here, in the present invention, a clinker having a shape factor of 0.6 to 0.8 is used. For example, cement clinker that has been fluidized and fired is spherical, that is, the shape factor is 1, and the spherical clinker is crushed by a crusher to improve its shape. Use a polyhedral clinker with a lower t of 0.6 to 0.8, divide it into appropriate surfaces, and measure its typical dimensions from 1 to 5 m.
Align to the range of s.
このように、形状係数が０．６〜０．８である檀クリン
カを使用することにより、流動焼成炉１の初期の流動が
良好になる。すなわち、本発明者がテストプラントで実
験をしたところ、ｉクリンカの形状が０．８を越えるも
のでは、セット風速に対して、−瞬停上など、流動状ｊ
−が、を匝に形状係−ｉｊ！Ｌ１０球形のクリンカと同
様に悪化することが確認された。また形状係数が０．６
より小さくなると、セット風速に対して、流Ｍｔｈｍ或
炉１のフリーボードへの飛散が急匝に起り、安定しｆｃ
流動状悪を得ることができないことを確認し九〇なおア
ルミナの流動焼成炉においても、同様な実験結果が得ら
れた〇
発明の効果
本発明は、粉末原料を流動焼成する流動焼成炉の起動時
に、渡体媒体として、形状株式が０．６〜０．８の櫨り
リンカｔ−便用するので、−瞬停上や楓の生成およびフ
リーボードへの飛散などがなく、初期の流動が安定し、
立上り時の運転が容易となるAs described above, by using the Dan clinker having a shape factor of 0.6 to 0.8, the initial flow of the fluidized fluidized kiln 1 is improved. In other words, when the present inventor conducted an experiment at a test plant, it was found that when the shape of the i clinker exceeds 0.8, the flow state j
- is the shape of the -ij! It was confirmed that the deterioration was similar to that of L10 spherical clinker. Also, the shape factor is 0.6
When it becomes smaller, the flow Mthm or the scattering to the free board of the furnace 1 occurs rapidly with respect to the set wind speed, and becomes stable and fc
It was confirmed that it was not possible to obtain a poor fluidized state, and similar experimental results were obtained in a fluidized fluidized firing furnace for alumina. Effects of the invention The present invention provides a method for starting a fluidized fluidized firing furnace for fluidized firing of powder raw materials. Sometimes, as a transfer medium, a t-linker with a shape stock of 0.6 to 0.8 is used, so there is no instantaneous interruption, formation of maple, or scattering to the freeboard, and the initial flow is maintained. stable,
Easier to operate when starting up
図は本発明の方法を実施する装置の一例を示した説明図
でめる０
１−・・流動焼成炉、２・・・クーラ、３・―・櫨りリ
ンカ供給裟直、４・・・主併風礪、５・・・セメント粉
末原料供７ｆａｔｃ直、６−ｅ・最上段ティクロン、７
・・・最下波サイクロン、８・拳・仮焼炉、９・・・バ
ーナ、１０・・・燃焼用二次窒気ダクト。The figure is an explanatory diagram showing an example of an apparatus for carrying out the method of the present invention. Main side wind bunk, 5...Cement powder raw material supply 7 fatc direct, 6-e/top tier Tiklon, 7
... Bottom wave cyclone, 8. Fist/calciner, 9. Burner, 10. Secondary nitrogen duct for combustion.
Claims (1)
媒体として、形状係数が０．６〜０．８の種クリンカを
用い、該流動焼成炉の内部に前記種クリンカによる高温
の流動層を形成させたのち、該流動焼成炉に粉末原料を
投入することを特徴とする、流動焼成炉の起動方法。1. A seed clinker with a shape factor of 0.6 to 0.8 is used as a fluid medium when starting up a fluidized furnace for fluidized firing of powder raw materials, and a high-temperature fluidized bed formed by the seed clinker is placed inside the fluidized fluidized furnace. 1. A method for starting a fluidized fluidized kiln, the method comprising: charging a powder raw material into the fluidized kiln after forming a powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8435486A JPS62241545A (en) | 1986-04-14 | 1986-04-14 | Starting method for fluidized kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8435486A JPS62241545A (en) | 1986-04-14 | 1986-04-14 | Starting method for fluidized kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62241545A true JPS62241545A (en) | 1987-10-22 |
| JPH0536096B2 JPH0536096B2 (en) | 1993-05-28 |
Family
ID=13828177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8435486A Granted JPS62241545A (en) | 1986-04-14 | 1986-04-14 | Starting method for fluidized kiln |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62241545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360136A (en) * | 1986-08-29 | 1988-03-16 | 川崎重工業株式会社 | Raw material supply method for cement clinker manufacturing facilities |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994578A (en) * | 1973-01-16 | 1974-09-07 | ||
| JPS6032086A (en) * | 1983-08-03 | 1985-02-19 | 株式会社日立製作所 | Liquid crystal display |
-
1986
- 1986-04-14 JP JP8435486A patent/JPS62241545A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994578A (en) * | 1973-01-16 | 1974-09-07 | ||
| JPS6032086A (en) * | 1983-08-03 | 1985-02-19 | 株式会社日立製作所 | Liquid crystal display |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360136A (en) * | 1986-08-29 | 1988-03-16 | 川崎重工業株式会社 | Raw material supply method for cement clinker manufacturing facilities |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0536096B2 (en) | 1993-05-28 |
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