JPS6023853B2 - suspension preheater - Google Patents
suspension preheaterInfo
- Publication number
- JPS6023853B2 JPS6023853B2 JP53099530A JP9953078A JPS6023853B2 JP S6023853 B2 JPS6023853 B2 JP S6023853B2 JP 53099530 A JP53099530 A JP 53099530A JP 9953078 A JP9953078 A JP 9953078A JP S6023853 B2 JPS6023853 B2 JP S6023853B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- exchange stage
- raw material
- electrostatic precipitator
- fan
- 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
Links
- 239000000725 suspension Substances 0.000 title claims description 12
- 239000002994 raw material Substances 0.000 claims description 25
- 239000012717 electrostatic precipitator Substances 0.000 claims description 15
- 239000000428 dust Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 238000010304 firing Methods 0.000 description 5
- 239000004568 cement Substances 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
- 238000001354 calcination Methods 0.000 description 2
- 239000012718 dry electrostatic precipitator Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241001061140 Caulophryne pelagica Species 0.000 description 1
- 241000545744 Hirudinea Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005070 ripening Effects 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
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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Description
【発明の詳細な説明】
本発明は、セメントあるいはアルミナなどの粉末原料の
焼成設備に用いられるサスペンションブレヒータ（仮焼
バーナ付きサスペンションプレヒー夕を含む）の改良に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a suspension preheater (including a suspension preheater with a calcining burner) used in equipment for firing powder raw materials such as cement or alumina.
一般にサスペンションブレヒータは、セメントあるいは
アルミナなどの粉末原料の焼成設備に組み込まれて用い
られている。Generally, a suspension breheater is used by being incorporated into a firing facility for powder raw materials such as cement or alumina.
これは、たとえば焼成炉排ガスなどの高温気流中に粉末
原料を浮遊させてガスと原料間の熱交換を行なわせ、原
料を加熟するものである。従来、セメント焼成設備で多
用されている４段サイクロン型式のサスペンションプレ
ヒー外ま「第１図に示すように、４つのサイクロンＣＩ
，Ｃ２，Ｃ３，Ｃ４と、それらを接続する導管ｄ，，ら
，ｄ３，ｑとから成り、すなわち、それらによって、ｃ
，とｄ，で第１熱交換段を、ｃ２ともで第２熱交換段を
、ｃ３とｄ３で第３熱交換段を、Ｃ４とｄ４で第４熱交
換段を構成しており、そのガス入口側の導管中の他端は
ロータリキルンｒの炉尻に接続され、他方、ガス出口側
は、つまり、サイクロンｃ，の出口は主排風機ｆを介在
する排気ダクトに接続されていて、キルン排ガスがｄ４
→ｃ４→＆→Ｃ３→も→ｃ２→ｄ，→ｃ，と直列に通過
するように該主排風機ｆで吸引される。一方、粉末原料
が原料供給装置ａからｄ，→ｃ，→も→ｃ２→ｄ３→ｃ
３→ｄ４→ｃ４を経て加熱され、ロータリキルンｒに導
入されるようになつている。しかして、この装置によれ
ば、第１熱交換段のサイクロンｃ，の出口から、サイク
ロンで橘集できない相当量の粉末原料を同伴するガスが
排出系に至るので、ダストに付与された分の熱エネルギ
ーが有効に利用されずにそのまま無駄に棄てられること
となり、また主数風機ｆで吸引されるガスには、相当量
のダストが含まれているので、ファンィンベラが摩耗し
、これがため、焼成装置を休止して１〜２年ごとに補修
する必要があり、そのうえ、ファンィンベラのコーチン
グを助長し、その脱着によるモータトリップや振動トラ
ブルが起り、それがため、時には休転して点検や修理を
しなければならないなど、生産設備の連続操業を妨げる
一因となっていた。This method involves suspending a powdered raw material in a high-temperature air stream, such as firing furnace exhaust gas, to cause heat exchange between the gas and the raw material, thereby ripening the raw material. In addition to the four-stage cyclone-type suspension preheating system commonly used in cement firing equipment, there are four cyclone CIs as shown in Figure 1.
, C2, C3, C4 and conduits d, , et al., d3, q connecting them, that is, by them, c
, and d constitute a first heat exchange stage, both c2 constitute a second heat exchange stage, c3 and d3 constitute a third heat exchange stage, and C4 and d4 constitute a fourth heat exchange stage, and the gas The other end of the conduit on the inlet side is connected to the bottom of the rotary kiln r, while the gas outlet side, that is, the outlet of the cyclone c, is connected to an exhaust duct with a main exhaust fan f, Exhaust gas is d4
→c4→&→C3→ is also sucked by the main exhaust fan f so as to pass in series with →c2→d, →c. On the other hand, the powder raw material is supplied from the raw material supply device a to d, → c, → also → c2 → d3 → c
It is heated through steps 3→d4→c4 and introduced into rotary kiln r. According to this device, gas carrying a considerable amount of powdered raw material that cannot be collected by the cyclone reaches the exhaust system from the outlet of the cyclone c of the first heat exchange stage. Thermal energy is not used effectively and is wasted, and the gas sucked in by the main fan f contains a considerable amount of dust, which causes the fan inflator to wear out and prevent firing. It is necessary to stop the equipment and repair it every 1 to 2 years, and in addition, it encourages the coaching of the fanfin vera, and motor trips and vibration problems occur due to the attachment and detachment of the equipment. This was one of the factors that hindered the continuous operation of production equipment.
なお最近開発されて実用化されているサスペンションプ
レヒータとロータリキルンとの間に仮競炉または仮鱗城
を形成するバーナを付設した型式の仮焼バーナ付きサス
ペンションプレヒータでも同様のことが言える。本発明
は、第１熱交換段を導管で形成し、この第１熱交換段と
主８Ｅ風機の間に電気集じん器を設け、この集じん器で
の捕集原料を空気輸送にて第２熱交換段に導くようにす
ることによって、上述の従来のプレヒータの欠点を巧み
に解消したもので、その一実施例について、第２図を参
照しながら説明する。第２図は本発明を仮糠バーナ付き
サスペンションプレヒータに適用した一実施例を示した
立面図で、第１図のものと同一もしくは均等な部分には
同一符号をつけてある。The same can be said of a suspension preheater with a calcining burner that has been recently developed and put into practical use and has a burner that forms a temporary furnace or scale between the suspension preheater and the rotary kiln. In the present invention, the first heat exchange stage is formed by a conduit, an electrostatic precipitator is provided between the first heat exchange stage and the main 8E fan, and the raw material collected in the dust collector is transported by air to the second stage. By introducing two heat exchange stages, the drawbacks of the above-mentioned conventional preheater have been skillfully solved, and one embodiment thereof will be described with reference to FIG. FIG. 2 is an elevational view showing an embodiment in which the present invention is applied to a suspension preheater with a temporary bran burner, in which the same or equivalent parts as those in FIG. 1 are given the same reference numerals.
第２図において、１はガス導管Ｄで形成された第１熱交
換段、２は導管もとサイクロンｃ２で形成された第２熱
交換段、３は導管ｄ３とサイクロンｃ３で形成された第
３熱交換段、４は仮競炉Ｆとサイクロンｃ４で構成され
る仮蛭段（最終熱交換段）である。In Fig. 2, 1 is the first heat exchange stage formed by the gas conduit D, 2 is the second heat exchange stage formed by the conduit and cyclone c2, and 3 is the third heat exchange stage formed by the conduit d3 and the cyclone c3. The heat exchange stage 4 is a temporary leech stage (final heat exchange stage) consisting of a temporary furnace F and a cyclone c4.
また５は乾式電気集じん器、６は風量調節用ダンパ、７
は空気取入用ダンパ、８は橘集原料排出機、９はェジェ
クタ、１０は輸送用ファン、１１は橋集原料輸送管であ
る。すなわち、電気集じん器５は第１熱交換段１と主９
Ｅ風機ｆの間のガス導管Ｄの途中に設けられており、ま
た電気集じん器５で捕集されたダスト（主として粉末原
料）は、構築原料排出機８からヱジェクタ９に至り、輸
送用ファン１川こよってェジェクタ９から橘集原料輸送
管１１を通って第２熱交換段２の導管ｃ２の途中に導入
されるようになっている。したがって、第２図のように
構成された粉末原料の子熱装置においては、第１熱交換
段１の導管ｄ，から排出されるダストは排ガスとともに
ガス導管○を通って電気集じん器５で楠集され、主排風
機ｆにはダストを含まない清浄ガスのみが流れることに
なる。In addition, 5 is a dry electrostatic precipitator, 6 is a damper for adjusting air volume, and 7 is a dry electrostatic precipitator.
8 is a damper for air intake, 8 is a Tachibana collection raw material discharger, 9 is an ejector, 10 is a transportation fan, and 11 is a Hashi collection raw material transport pipe. That is, the electrostatic precipitator 5 has a first heat exchange stage 1 and a main heat exchange stage 9.
The dust (mainly powder raw materials) collected by the electrostatic precipitator 5, which is installed in the middle of the gas conduit D between the fan E and the fan f, reaches the ejector 9 from the construction raw material discharger 8, and is then sent to the transport fan. The raw material is introduced from the ejector 9 through the pipe 11 into the conduit c2 of the second heat exchange stage 2. Therefore, in the powder raw material heating device configured as shown in FIG. 2, the dust discharged from the conduit d of the first heat exchange stage 1 passes through the gas conduit Only clean gas containing no dust flows through the main exhaust fan f.
そして電気集じん器５で捕集されたダスト（主として粉
末原料）は、すべて補集原料輸送管１ １を経て第２熱
交換段２の導管ｄ２に仮送されることになる。このよう
に、本発明のサスペンションプレヒ−外ま、電気集じん
器を介して第２熱交換段と排風機とを連結したダクトを
有するとともに、このダクトの第２熱交換段よりに原料
を該ダクト内に導入する原料供給装置を有する第１熱交
換段を備え、かつ「前記電気集じん器と第２熱交換段と
を連結して該電気集じん器で瓶集された原料を該第２熱
交換段に導入する空気輸送装置を備えているので、ちよ
うど、第１段サイクロンのかわりに電気集じん器を設け
たことになり、サイクロンの場合の圧損１００〜２０仇
肋，Ａｑが約３０側Ａｑに減少するので、主鱗風機の必
要動力が低減し、かつ、電気集じん器は集じん効率が高
いので、熱回収および排出原料の回収がよく、しかも、
主９Ｅ風機のトラブルも回避され、すなわち、ファンィ
ンベラの摩耗が減少し、かつ、ファンインベラのコーチ
ングの脱着によるトリップや振動トラブルが解消される
。All of the dust (mainly powder raw materials) collected by the electrostatic precipitator 5 is temporarily transported to the conduit d2 of the second heat exchange stage 2 via the collected raw material transport pipe 11. In this way, the suspension preheating system of the present invention has a duct that connects the second heat exchange stage and the exhaust fan via the electrostatic precipitator, and the raw material is transferred from the second heat exchange stage of this duct. a first heat exchange stage having a raw material supply device introduced into the duct; Since it is equipped with an air conveying device that is introduced into the second heat exchange stage, it means that an electrostatic precipitator is installed instead of the first stage cyclone, and the pressure loss is 100 to 20 times lower than in the case of a cyclone. Since Aq is reduced to about 30 side Aq, the power required for the main scale fan is reduced, and the electrostatic precipitator has high dust collection efficiency, so heat recovery and discharged raw material recovery are good.
Trouble with the main 9E wind machine is also avoided, that is, wear on the fan inflator is reduced, and tripping and vibration troubles due to attachment and detachment of the coaching of the fan invera are eliminated.
また電気集じん器を地上もしくは低い位置に設置するこ
とができるので、ブレヒータの架横の高さおよび重量を
低減することができ、しかも、電気集じん器の大きさも
プレヒータの架横に干渉されることなく、自由に設計で
きるので、高性能の電気集じん器が使用できる。また電
気集じん器を用いることによって排ガス中の含じん量が
著しく減少し、プレヒータ排ガスを用いて発電する場合
は、従来のサスペンションプレヒータにくるべて、きわ
めて有利である。In addition, since the electrostatic precipitator can be installed on the ground or at a low location, the height and weight of the preheater rack can be reduced, and the size of the electrostatic precipitator does not interfere with the preheater rack. Since it can be designed freely without having to worry about any problems, a high-performance electrostatic precipitator can be used. Further, by using an electrostatic precipitator, the amount of dust in the exhaust gas is significantly reduced, and when generating electricity using the preheater exhaust gas, it is extremely advantageous compared to a conventional suspension preheater.
第１図は従来のサスペンションブレヒー夕の立面図、第
２図は本発明の−実施例の立面図である。
ａ・・・・・・原料供給装置、ｃ，，ｃ２，Ｃ３，Ｃ４
・・・・・・サイクロン、Ｄ・・・・・・ガス導管、ｄ
，，ｑ，ｄ３，４・・・・・・導管、ｆ・・・・・・主
排風機、Ｆ・・・・・・仮焼炉、ｒ・・・…ロータリキ
ルン、１・・…・第１熱交換段、２・・・・・・第２熱
交換段、３・・・・・・第３熱交換段、４・・・・・・
第４熱交換段、５・・・・・・電気集じん器、６・・・
・・・風量調節用ダンパ、７・・・・・・空気取入用ダ
ンパ、８・・・・・・補集原料緋出機、９・・…・ェジ
ェクタ、１０・・・・・・輸送用ファン、１１・…・・
補集原料輸送管。
多「図
多２図FIG. 1 is an elevational view of a conventional suspension breaker, and FIG. 2 is an elevational view of an embodiment of the present invention. a... Raw material supply device, c,, c2, C3, C4
...Cyclone, D... Gas pipe, d
,,q,d3,4... Conduit, f... Main exhaust fan, F... Calciner, r... Rotary kiln, 1... First heat exchange stage, 2... Second heat exchange stage, 3... Third heat exchange stage, 4...
Fourth heat exchange stage, 5... Electrostatic precipitator, 6...
...Damper for air volume adjustment, 7...Damper for air intake, 8...Collection material extraction machine, 9...Ejector, 10...Transportation fan, 11...
Supplementary raw material transport pipe. Multi-figure 2 drawings
Claims (1)
結したダクトを有するとともに、このダクトの第２熱交
換段よりに原料を該ダクト内に導入する原料供給装置を
有する第１熱交換段を備え、かつ、前記電気集じん器と
第２熱交換段とを連結して該電気集じん器で捕集された
原料を該第２熱交換段に導入する空気輸送装置を備えて
成る、サスペンシヨンプレヒータ。1 A first having a duct connecting a second heat exchange stage and an exhaust fan via an electrostatic precipitator, and having a raw material supply device for introducing raw material into the duct from the second heat exchange stage of this duct. A pneumatic transport device comprising a heat exchange stage, and connecting the electrostatic precipitator and a second heat exchange stage to introduce the raw material collected by the electrostatic precipitator to the second heat exchange stage. A suspension preheater consisting of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53099530A JPS6023853B2 (en) | 1978-08-17 | 1978-08-17 | suspension preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53099530A JPS6023853B2 (en) | 1978-08-17 | 1978-08-17 | suspension preheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5527061A JPS5527061A (en) | 1980-02-26 |
| JPS6023853B2 true JPS6023853B2 (en) | 1985-06-10 |
Family
ID=14249768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53099530A Expired JPS6023853B2 (en) | 1978-08-17 | 1978-08-17 | suspension preheater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023853B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292238A (en) * | 1976-01-12 | 1977-08-03 | Onoda Cement Co Ltd | Method of baking powdery materials of multistage cyclone of auxiliary furnace type and apparatus for carrying out thereof |
| JPS52136219A (en) * | 1976-05-12 | 1977-11-14 | Ishikawajima Harima Heavy Ind | Method of baking raw materials for cement and apparatus for carrying out thereof |
-
1978
- 1978-08-17 JP JP53099530A patent/JPS6023853B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292238A (en) * | 1976-01-12 | 1977-08-03 | Onoda Cement Co Ltd | Method of baking powdery materials of multistage cyclone of auxiliary furnace type and apparatus for carrying out thereof |
| JPS52136219A (en) * | 1976-05-12 | 1977-11-14 | Ishikawajima Harima Heavy Ind | Method of baking raw materials for cement and apparatus for carrying out thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5527061A (en) | 1980-02-26 |
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