JPS6236067Y2 - - Google Patents
Info
- Publication number
- JPS6236067Y2 JPS6236067Y2 JP1956683U JP1956683U JPS6236067Y2 JP S6236067 Y2 JPS6236067 Y2 JP S6236067Y2 JP 1956683 U JP1956683 U JP 1956683U JP 1956683 U JP1956683 U JP 1956683U JP S6236067 Y2 JPS6236067 Y2 JP S6236067Y2
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- jet gas
- jet
- firing furnace
- cross
- 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
- 238000010304 firing Methods 0.000 claims description 17
- 239000000843 powder Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims 3
- 239000000463 material Substances 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【考案の詳細な説明】
本考案は、セメントやアルミナなどの粉末原料
の流動焼成炉に関するものである。[Detailed Description of the Invention] The present invention relates to a fluidized fluidized kiln for powder raw materials such as cement and alumina.
従来のこの種の噴流層型流動焼成炉は、たとえ
ば第１図に示すように、流動焼成炉本体ａの中心
部の上昇流が速く、とくに、円錐部所ｂには、流
動媒体の停滞域ｃが形成され、流れが停滞して流
動を悪化させる欠点があつた。これを防止するに
は、つまり、前記停滞域ｃが形成されないように
するためには、円錐部所ｂの傾斜角θを流動媒体
の安息角よりも、かなり大きいものとすればよい
ことになるが、それでは流動焼成炉全体の高さが
高くなりすぎるので好ましくない。また炉内の滞
留量を高さ方向でかせぐので、流動層の層厚が大
となり、したがつて、流動化空気の空気圧を高圧
としなければならなくなり、ランニングコストが
嵩む欠点がある。 In a conventional spouted bed type fluidized firing furnace of this kind, for example, as shown in FIG. There was a drawback that c was formed and the flow became stagnant, worsening the flow. In order to prevent this, that is, to prevent the formation of the stagnation zone c, the inclination angle θ of the conical portion b should be made considerably larger than the angle of repose of the fluid medium. However, this is not preferable because the height of the entire fluidized firing furnace becomes too high. Furthermore, since the amount of retention in the furnace is increased in the height direction, the layer thickness of the fluidized bed becomes large, and therefore the air pressure of the fluidizing air must be made high, which has the disadvantage of increasing running costs.
本考案は、従来の流動焼成炉の上記の欠点を解
消するためになされたもので、すなわち、流動焼
成炉本体の噴流用気体通気部を、見掛け上、広く
することによつて、流動焼成炉全体の高さを増加
させることなく、流動悪化の生じない粉末原料の
流動焼成炉を提供することを目的とするものであ
る。 The present invention was made in order to eliminate the above-mentioned drawbacks of the conventional fluidized firing furnace. Namely, by making the jet gas ventilation part of the body of the fluidized firing furnace apparently wider, It is an object of the present invention to provide a fluidized sintering furnace for powder raw materials that does not cause deterioration of fluidity without increasing the overall height.
このため、本考案の構成は、適当な大きさの断
面積を有する流動焼成炉本体と、この焼成炉本体
の底下部に連通状に設けられて噴流用気体を該焼
成炉本体の底部に向けて上方へと通す見掛け上の
断面積の大なる噴流用気体管とを備え、かつ、該
焼成炉本体内で噴流層を形成するに充分な気体速
度を得るように、前記噴流用気体管の噴流用気体
出口部に同心状に設けられた適数個の減断面材を
備えていることを特徴としている。 For this reason, the configuration of the present invention includes a fluidized firing furnace body having a cross-sectional area of an appropriate size, and a fluidized firing furnace that is connected to the bottom of the firing furnace body so as to direct the jet gas toward the bottom of the firing furnace body. and a jet gas pipe having a large apparent cross-sectional area that passes upward through the furnace body, and the jet gas pipe is configured to have a sufficient gas velocity to form a spouted layer within the firing furnace main body. It is characterized by having an appropriate number of cross-section reducing members provided concentrically at the jet gas outlet.
以下、本考案の一実施例について、第２図およ
び第３図を参照しながら説明する。 An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.
第２図において、１は流動焼成炉本体で、その
内径d1を比較的大きくして大型にしてある。２は
噴流用気体管で、該焼成炉本体１の底下部に連通
状に設けられて噴流用気体を該焼成炉本体１の底
部に向けて上方へと通す見掛け上の内径d2（d1＞
d2）が大きなものからなつている。３と４は減断
面材で、該焼成炉本体１の内部において噴流層を
形成するに充分な気体速度を得るように、前記噴
流用気体管２の噴流用気体出口部に同心状（第３
図参照）に設けられている。その他、５は前記減
断面材３を噴流用気体管２の内に固定している支
持部材、６は前記減断面材４を減断面材３の内部
に固定している支持部材、７は前記噴流用気体管
２と減断面材３の間に形成された噴流用高速気体
通気部、８は前記減断面材３と４の間に形成され
た噴流用高速気体通気部、９は被焼成物である粉
末原料、１０は排ガス出口である。 In FIG. 2, reference numeral 1 denotes the main body of the fluidized furnace, which has a relatively large inner diameter d1 . Reference numeral 2 denotes a jet gas pipe, which is provided in communication with the bottom of the firing furnace body 1 and has an apparent inner diameter d 2 (d 1 ＞
d 2 ) consists of large pieces. Reference numerals 3 and 4 denote reduced cross-section members, which are arranged concentrically (the third
(see figure). In addition, 5 is a support member fixing the reduced section material 3 inside the jet gas pipe 2, 6 is a support member fixing the reduced section material 4 inside the reduced section material 3, and 7 is the support member fixed to the inside of the reduced section material 3. 8 is a jet high-speed gas vent formed between the jet gas pipe 2 and the cross-section reducing material 3, 8 is a jet high-speed gas vent formed between the cross-section reducing members 3 and 4, and 9 is the object to be fired. is the powder raw material, and 10 is the exhaust gas outlet.
第２図および第３図に示すように構成された粉
末原料の流動焼成炉においては、噴流用気体は、
点線矢印１１で示すように噴流用気体管２の内部
を上昇し、噴流用高速気体通気部７と８を通る際
に高速となり、点線矢印１２で示すように、高速
気流となつて流動焼成炉本体１の炉底部の広い範
囲から、いつせいに噴き上げる。このため、該焼
成炉本体１の内部においては、粉末原料が実線矢
印１３と１４で示すように流れて噴流層を形成
し、また実線矢印１５のように、粉末原料または
焼成されたクリンカなどが下降するので、停滞す
ることなく、効率よく焼成される。なお排ガスは
点線矢印１６で示すように排ガス出口１０から排
出される。 In the fluidized fluidized firing furnace for powder raw materials configured as shown in FIGS. 2 and 3, the jet gas is
As shown by the dotted line arrow 11, the gas rises inside the jet gas pipe 2, becomes high speed when passing through the jet high speed gas vents 7 and 8, and becomes a high speed air stream as shown by the dotted line arrow 12, and flows into the fluidized firing furnace. It spews out from a wide area at the bottom of the furnace body 1. Therefore, inside the firing furnace body 1, the powder raw material flows as shown by solid line arrows 13 and 14 to form a spouted bed, and as shown by the solid line arrow 15, powder raw material or fired clinker etc. Since it descends, it is fired efficiently without stagnation. Note that the exhaust gas is discharged from the exhaust gas outlet 10 as indicated by a dotted arrow 16.
なお上記実施例では、流動焼成炉本体１の断面
が円形のものについて説明したが、他の形状のも
のでも、同様である。 In the above embodiment, the fluidized firing furnace main body 1 has a circular cross section, but the same applies to other shapes.
上述のように、本考案は、噴流用気体管の見掛
け上の断面積を大きくしたことと、噴流用気体管
の噴流用気体出口部に減断面材を同心的に設けた
ことにより、噴流用気体は流動焼成炉本体の炉底
部の広い範囲から、いつせいに均等に高速で噴き
上げ、炉内には停滞域がなくなり、したがつて、
流動焼成炉全体の高さを増加させることなく、ま
た特別な高圧気体源を必要とすることなく、流動
悪化の欠点が巧みに解消されるとともに、層厚を
高くすることなく、焼成炉の能力を大型化するこ
とができるなど、本考案の奏する効果は、きわめ
て大である。 As mentioned above, the present invention increases the apparent cross-sectional area of the jet gas pipe and provides a cross-section reducing material concentrically at the jet gas outlet of the jet gas pipe. The gas is spouted out uniformly and at high speed from a wide area at the bottom of the fluidized fluidized furnace body, and there is no stagnation area in the furnace.
Without increasing the overall height of the fluidized kiln and without requiring a special high-pressure gas source, the drawback of poor flow is skillfully eliminated, and the kiln capacity is improved without increasing the layer thickness. The effects of this invention, such as being able to increase the size of the device, are extremely large.
第１図は従来の噴流型流動焼成炉の説明図、第
２図は本考案の一実施例を示した一部切欠縦断正
面図、第３図は第２図の切断線Ａ−Ａに沿う断面
平面図である。
１……流動焼成炉本体、２……噴流用気体管、
３，４……減断面材、７，８……噴流用高速気体
通気部、９……粉末原料。
Fig. 1 is an explanatory diagram of a conventional jet-type fluidized fluidized kiln, Fig. 2 is a partially cutaway longitudinal sectional front view showing an embodiment of the present invention, and Fig. 3 is taken along the cutting line A-A in Fig. 2. FIG. 1...Fluidized firing furnace main body, 2...Jet gas pipe,
3, 4...Reduced cross-section material, 7, 8... High speed gas vent for jet flow, 9... Powder raw material.
Claims (1)
と、この焼成炉本体の底下部に連通状に設けられ
て噴流用気体を該焼成炉本体の底部に向けて上方
へと通す見掛け上の断面積の大なる噴流用気体管
とを備え、かつ、該焼成炉本体内で噴流層を形成
するに充分な気体速度を得るように、前記噴流用
気体管の噴流用気体出口部に同心状に設けられた
適数個の減断面材を備えていることを特徴とす
る、粉末原料の流動焼成炉。 A fluidized calcination furnace body having a cross-sectional area of an appropriate size, and an apparent section provided in communication with the bottom of the calcination furnace body to direct the jet gas upward toward the bottom of the calcination furnace body. and a jet gas pipe having a large area, and arranged concentrically at the jet gas outlet of the jet gas pipe so as to obtain a sufficient gas velocity to form a spouted layer within the firing furnace main body. A fluidized fluidized firing furnace for powder raw materials, characterized in that it is equipped with an appropriate number of cross-section reducing members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1956683U JPS59128096U (en) | 1983-02-15 | 1983-02-15 | Fluidized fluidized kiln for powder raw materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1956683U JPS59128096U (en) | 1983-02-15 | 1983-02-15 | Fluidized fluidized kiln for powder raw materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59128096U JPS59128096U (en) | 1984-08-29 |
| JPS6236067Y2 true JPS6236067Y2 (en) | 1987-09-12 |
Family
ID=30150709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1956683U Granted JPS59128096U (en) | 1983-02-15 | 1983-02-15 | Fluidized fluidized kiln for powder raw materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59128096U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008046772A1 (en) * | 2008-09-11 | 2010-03-18 | Glatt Ingenieurtechnik Gmbh | Method and device for treating fine-grained material in a spouted bed |
-
1983
- 1983-02-15 JP JP1956683U patent/JPS59128096U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59128096U (en) | 1984-08-29 |
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