JPS6229919Y2 - - Google Patents
Info
- Publication number
- JPS6229919Y2 JPS6229919Y2 JP5941983U JP5941983U JPS6229919Y2 JP S6229919 Y2 JPS6229919 Y2 JP S6229919Y2 JP 5941983 U JP5941983 U JP 5941983U JP 5941983 U JP5941983 U JP 5941983U JP S6229919 Y2 JPS6229919 Y2 JP S6229919Y2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- chute
- hot gas
- gas conduit
- conduit
- 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
- 239000002994 raw material Substances 0.000 claims description 93
- 239000004568 cement Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Furnace Details (AREA)
Description
【考案の詳細な説明】
セメントや石灰石等の乾式焼成装置におけるサ
スペンシヨンプレヒータの如き原料予熱装置にお
いて、原料の予熱は原料と熱ガスとの向流熱交換
によつて行なわれる。[Detailed description of the invention] In a raw material preheating device such as a suspension preheater in a dry firing device for cement, limestone, etc., preheating of the raw material is performed by countercurrent heat exchange between the raw material and hot gas.
第１図は従来の原料予熱装置を示し、前記熱交
換はガス導管１内を上昇する熱ガスａ中に原料ｂ
が投入されることより行なわれ、この原料の投入
は原料の重力を利用して原料シユート２を介して
行なわれる。このため原料シユート２の投入角度
θは原料の閉塞防止も考慮して60゜以上の急傾斜
を要し、そのため原料の重力による上昇熱ガスに
対する抵抗が大きくなり、プレーヒータの圧損が
大きくなるとともに、原料の重力加速度が大きい
とガス導管１内での原料の分散が悪く、熱交換効
率が悪くなる。このためガス導管１内に各種の原
料分散板３が配設されているが、高温部において
は耐熱性が要求され、原料シユート２の形状、ま
たは方向によつては前記分散板３の効果が十分に
発揮できず、同分散板３を大きくすればその圧損
が大きくなる。また附着性のある原料や石灰石に
あつては前記分散板３に対するコーチングの生長
で同分散板３の効力を失つたり、原料シユート２
の閉塞が生じる等の欠点が生じた。なお図中４は
耐火材を示す。 FIG. 1 shows a conventional raw material preheating device, in which the heat exchange is carried out by introducing a raw material b into a hot gas a rising in a gas conduit 1.
This is done by charging the raw material, and this raw material is charged through the raw material chute 2 by utilizing the gravity of the raw material. For this reason, the feeding angle θ of the raw material chute 2 needs to be steeply sloped at least 60° to prevent clogging of the raw material, which increases the resistance to the rising hot gas due to the gravity of the raw material, increases the pressure drop of the play heater, and If the gravitational acceleration of the raw material is large, the dispersion of the raw material within the gas conduit 1 will be poor, resulting in poor heat exchange efficiency. For this reason, various raw material distribution plates 3 are arranged in the gas conduit 1, but heat resistance is required in the high temperature section, and depending on the shape or direction of the raw material chute 2, the effect of the distribution plate 3 may be affected. If the dispersion plate 3 is made larger, the pressure loss will increase. In addition, in the case of raw materials or limestone that have adhesion properties, the effectiveness of the dispersion plate 3 may be lost due to the growth of the coating on the dispersion plate 3, or the raw material chute 2
However, there were drawbacks such as blockage. Note that 4 in the figure indicates a refractory material.
本考案はこのような欠点を除去するために提案
されたもので、セメント原料等の粉粒原料を熱ガ
スによつて予熱する予熱装置において、熱ガス導
管へ原料を導く原料シユートにおける前記導管接
合部の原料スライド面を、原料のスライド方向を
漸変し、前記熱ガス導管のガス流に対してほぼ直
交する方向に原料を供給するように形成してなる
ことを特徴とする原料シユートに係るものであ
る。 The present invention was proposed in order to eliminate such drawbacks, and in a preheating device that preheats granular raw materials such as cement raw materials with hot gas, the conduit joint in the raw material chute that guides the raw material to the hot gas conduit. The raw material chute is characterized in that the raw material sliding surface of the part is formed so as to gradually change the sliding direction of the raw material and supply the raw material in a direction substantially perpendicular to the gas flow of the hot gas conduit. It is something.
本考案においては前記したように、原料シユー
トにおける熱ガス導管に対する接合部の原料スラ
イド面が前記したように原料シユート内を流れる
原料の流れ方向が変更される。更に原料が原料シ
ユート内を落下するとき、同原料の重力によつて
重力加速度が加えられ、その慣性力によつて原料
が原料シユートから熱ガス導管内に投入される際
に同原料は跳び上る。この原料の方向転換によつ
て熱ガス導管内のガスの流れ方向に対してほぼ直
角方向に原料が衝突するので、原料の分散性がよ
く、分散抵抗を少なくすることができる。 In the present invention, as described above, the raw material sliding surface of the joint portion of the raw material chute with respect to the hot gas conduit changes the flow direction of the raw material flowing within the raw material chute as described above. Furthermore, when the raw material falls inside the raw material chute, gravitational acceleration is applied by the gravity of the raw material, and the raw material jumps due to the inertial force when the raw material is introduced from the raw material chute into the hot gas pipe. . Due to this direction change of the raw material, the raw material collides with the raw material in a direction substantially perpendicular to the flow direction of the gas in the hot gas conduit, so that the raw material can be dispersed well and the dispersion resistance can be reduced.
このように本考案によれば圧力損失の増加が防
止されるだけでなく、熱ガス導管内における原料
分散板の設置が不要になり、分散板設置によるト
ラブルがなくなると同時に原料シユートの取付構
造が簡単になる。 In this way, the present invention not only prevents an increase in pressure loss, but also eliminates the need to install a raw material distribution plate in the hot gas pipe, eliminating troubles caused by installing the distribution plate and at the same time improving the mounting structure of the raw material chute. It gets easier.
以下本考案を図示の実施例について説明する。
第３図において１１は乾式セメント焼成装置また
は石灰焼成装置における原料予熱装置（サスペン
シヨンプレヒータ）の熱ガス導管、１２は同熱ガ
ス導管１１に粉粒原料を導く原料シユートで、同
シユート１２の先端における前記熱ガス導管１１
に対する接続部の原料スライド面１３が、円弧、
サイクロイド曲線多角形等の曲面状に構成されて
いる。図中１４は耐火材である。 The present invention will be described below with reference to the illustrated embodiments.
In Fig. 3, 11 is a hot gas conduit for a raw material preheating device (suspension preheater) in a dry cement firing device or a lime calcining device, and 12 is a raw material chute that guides the granular raw material to the same hot gas conduit 11. The hot gas conduit 11 in
The raw material sliding surface 13 of the connecting part to the circular arc,
It is configured in a curved shape such as a cycloidal polygon. In the figure, 14 is a refractory material.
従つて原料シユート１２に投入された原料は前
記曲面状の原料スライド面１３によつてその流れ
方向が変更される。而して原料が原料シユート１
２内を落下するとき、原料の重力により重力加速
度が加えられ、その慣性力によつて原料シユート
１２からガス導管１１内に落下する際、矢印Ａに
示すように原料がジヤンプする。 Therefore, the flow direction of the raw material fed into the raw material chute 12 is changed by the curved raw material slide surface 13.
When the raw material falls through the gas pipe 11 from the raw material chutes 12, the raw material is subjected to gravitational acceleration due to its gravity, and when the raw material falls through the gas pipe 11 from the raw material chutes 12 due to its inertial force, the raw material jumps as shown by arrow A.
このように原料の流れ方向が変更されることに
よつて、同原料はガス導管１１内のガスの流れ方
向に対して直角方向に衝突するので、原料の分散
性がよく、従来の分散板が不要となり、また原料
の下向きの力が減少し、ガス導管１１内の加速圧
損が低減される。 By changing the flow direction of the raw material in this way, the raw material collides in the direction perpendicular to the flow direction of the gas in the gas conduit 11, so the dispersibility of the raw material is good, and the conventional dispersion plate is This is no longer necessary, and the downward force on the raw material is reduced, reducing the acceleration pressure loss in the gas conduit 11.
なお前記曲面状の原料スライド面１３を有する
原料シユート１２の開口部１２ａの断面形状を第
４図に示すように長方形とすることにより、その
横幅ａの寸法によつて原料の分散幅が決る。 By making the cross-sectional shape of the opening 12a of the raw material chute 12 having the curved raw material sliding surface 13 into a rectangular shape as shown in FIG. 4, the dispersion width of the raw material is determined by the width a thereof.
第５図は本考案の他の実施例を示し、原料シユ
ート１２における原料スライド面１３の面率半径
Ｒ及び曲率中心の位置をＣだけ齟齬させることに
より、原料のガス導管１１内への投入角度αを変
更し、原料の分散性、粘着性等に対処しうるもの
である。 FIG. 5 shows another embodiment of the present invention, in which the area ratio radius R and the position of the center of curvature of the raw material sliding surface 13 in the raw material chute 12 are varied by C, so that the input angle of the raw material into the gas conduit 11 can be adjusted. By changing α, it is possible to deal with the dispersibility, stickiness, etc. of raw materials.
第６図は本考案の他の実施例を示し、原料シユ
ート１２における原料供給位置を原料シユート１
２の先端開口部底面より垂直方向にＨ、水平方向
にＬなる位置に設置して、原料シユート１２に角
度θをもたせた場合を示している。前記原料の供
給位置により、原料シユート１２内を流れる原料
の同原料のシユート先端での流速が変る。そのた
め夫々の原料の状態に適した寸法を選定するもの
である。図中１５は上段サイクロンである。その
他図中前記各実施例と均等部分には同一符号が附
されている。 FIG. 6 shows another embodiment of the present invention, in which the raw material supply position in the raw material chute 12 is
The figure shows a case where the raw material chutes 12 are installed at a position H vertically and L horizontally from the bottom of the tip opening of the raw material chutes 2, giving the raw material chutes 12 an angle θ. The flow speed of the raw material flowing through the raw material chutes 12 at the tip of the chutes varies depending on the feed position of the raw material. Therefore, dimensions appropriate for each state of the raw material are selected. In the figure, 15 is an upper cyclone. Other parts in the figure that are equivalent to those in the previous embodiments are given the same reference numerals.
第７図は本考案の更に他の実施例を示し、原料
シユート１２の原料スライド面１３が多角形に形
成されている。 FIG. 7 shows still another embodiment of the present invention, in which the raw material sliding surface 13 of the raw material chute 12 is formed in a polygonal shape.
図中前記各実施例と均等部分には同一符号が附
されている。 In the drawings, parts equivalent to those of the above embodiments are given the same reference numerals.
第１図は従来の原料予熱装置の原料シユート接
続部を示す縦断面図、第２図は第１図の矢視−
図、第３図は本考案に係る原料シユートの一実
施例を具えた原料予熱装置の要部縦断面図、第４
図は第３図の矢視−図、第５図及び第６図並
に第７図は夫々本考案に係る原料シユートの各実
施例を示す縦断面図である。
１１……ガス導管、１２……原料シユート、１
３……原料スライド面。
Fig. 1 is a longitudinal sectional view showing the raw material chute connection part of a conventional raw material preheating device, and Fig. 2 is a view taken in the direction of the arrow in Fig. 1.
Figure 3 is a vertical cross-sectional view of a main part of a raw material preheating device equipped with an embodiment of a raw material chute according to the present invention, and Figure 4 is
The figure is a view taken along the arrow in FIG. 3, and FIGS. 5, 6, and 7 are longitudinal cross-sectional views showing respective embodiments of the raw material chute according to the present invention. 11... Gas conduit, 12... Raw material chute, 1
3...Raw material slide surface.
Claims (1)
熱する予熱装置において、熱ガス導管へ原料を導
く原料シユートにおける前記導管接合部の原料ス
ライド面を、原料のスライド方向を漸変し、前記
熱ガス導管のガス流に対してほぼ直交する方向に
原料を供給するように形成してなることを特徴と
する原料シユート。 In a preheating device that preheats granular raw materials such as cement raw materials with hot gas, the raw material sliding surface of the conduit joint in the raw material chute that guides the raw material to the hot gas conduit is gradually changed in the sliding direction of the raw material, and the raw material is A raw material chute characterized in that it is formed so as to supply raw material in a direction substantially perpendicular to the gas flow of a gas conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5941983U JPS59167400U (en) | 1983-04-22 | 1983-04-22 | raw material shoot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5941983U JPS59167400U (en) | 1983-04-22 | 1983-04-22 | raw material shoot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59167400U JPS59167400U (en) | 1984-11-09 |
| JPS6229919Y2 true JPS6229919Y2 (en) | 1987-07-31 |
Family
ID=30189667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5941983U Granted JPS59167400U (en) | 1983-04-22 | 1983-04-22 | raw material shoot |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59167400U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013137305A1 (en) | 2012-03-14 | 2013-09-19 | 三菱マテリアル株式会社 | Cement production device |
| WO2013137304A1 (en) | 2012-03-14 | 2013-09-19 | 三菱マテリアル株式会社 | Device for producing cement |
| WO2014034417A1 (en) | 2012-08-28 | 2014-03-06 | 三菱マテリアル株式会社 | Cement manufacturing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5919911B2 (en) * | 2012-03-14 | 2016-05-18 | 三菱マテリアル株式会社 | Exhaust gas treatment method and exhaust gas treatment device for cement manufacturing facility |
-
1983
- 1983-04-22 JP JP5941983U patent/JPS59167400U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013137305A1 (en) | 2012-03-14 | 2013-09-19 | 三菱マテリアル株式会社 | Cement production device |
| WO2013137304A1 (en) | 2012-03-14 | 2013-09-19 | 三菱マテリアル株式会社 | Device for producing cement |
| US9587881B2 (en) | 2012-03-14 | 2017-03-07 | Mitsubishi Materials Corporation | Cement production apparatus |
| WO2014034417A1 (en) | 2012-08-28 | 2014-03-06 | 三菱マテリアル株式会社 | Cement manufacturing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59167400U (en) | 1984-11-09 |
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