JPS595715Y2 - Powder raw material calcination equipment - Google Patents
Powder raw material calcination equipmentInfo
- Publication number
- JPS595715Y2 JPS595715Y2 JP5373780U JP5373780U JPS595715Y2 JP S595715 Y2 JPS595715 Y2 JP S595715Y2 JP 5373780 U JP5373780 U JP 5373780U JP 5373780 U JP5373780 U JP 5373780U JP S595715 Y2 JPS595715 Y2 JP S595715Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pipe
- combustion chamber
- raw material
- narrowed
- 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
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- Furnace Details (AREA)
Description
【考案の詳細な説明】
本考案は、特に、粉末原料の仮焼設備の仮焼炉に関する
もので、仮焼炉内の粉末原料の滞留時間を長くして仮焼
効率を改善すると共に、仮焼炉内に導入される排ガスの
脱硝を十分に行なうようにしたものである。[Detailed description of the invention] The present invention particularly relates to a calcination furnace for calcination equipment for powder raw materials. This ensures sufficient denitrification of the exhaust gas introduced into the furnace.
以下、本考案の一実施例を第１図〜第４図に基づいて説
明する。Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.
１は例えば乾式セメントプラントの仮焼設備における仮
焼炉である。1 is a calcining furnace in calcining equipment of a dry cement plant, for example.
該仮焼炉１は、上広がり状の下窄部２と、該下窄部２の
上端に接続する円筒部３と、該円筒部３の上端に接続す
る上狭まり状の上窄部４と、該上空部４の上端に接続す
る頭部５とから構或され、その内部に燃焼室６を形威し
ている。The calcining furnace 1 includes a lower narrowed part 2 that widens upward, a cylindrical part 3 connected to the upper end of the lower narrowed part 2, and an upper narrowed part 4 connected to the upper end of the cylindrical part 3. , and a head 5 connected to the upper end of the upper space 4, with a combustion chamber 6 formed therein.
また、上記頭部５は小円筒部５ａと球面状の蓋部５ｂで
構威されている。Further, the head 5 is composed of a small cylindrical portion 5a and a spherical lid portion 5b.
７は第一ガス導入管で、その一端は前記仮焼炉１の下窄
部２の底部に接続され、他端はセメント原料を焼或する
ロータリキルン（図示せず）の先端に取り付けられたキ
ルンフード８に接続されている。7 is a first gas introduction pipe, one end of which is connected to the bottom of the lower narrow part 2 of the calciner 1, and the other end is attached to the tip of a rotary kiln (not shown) for burning cement raw materials. It is connected to the kiln hood 8.
そして、該第一ガス導入管７を介してキルン排ガスが前
記燃焼室６に吹き込まれる。Then, kiln exhaust gas is blown into the combustion chamber 6 through the first gas introduction pipe 7.
９は上記第一ガス導入管７の途中に斜め上方から接続さ
れた粉末原料の投入管で、該粉末原料投入管９を介して
セメント原料がキルン排ガスと共に燃焼室６に吹き入れ
られる。Reference numeral 9 denotes a powder raw material input pipe connected obliquely from above in the middle of the first gas introduction pipe 7, through which the cement raw material is blown into the combustion chamber 6 together with the kiln exhaust gas.
１０は粉末原料仮焼用のバーナで、下窄部２の周囲適当
個所にその炎が燃焼室６中心に且つ下方に向かうように
設けられている。Reference numeral 10 denotes a burner for calcining the powder raw material, and is provided at an appropriate location around the lower narrowed portion 2 so that its flame is directed toward the center of the combustion chamber 6 and downward.
１１は前記頭部５の小円筒部５ａに接線方向で開口する
開口部で、排ガス抜取管１２に接続されている。Reference numeral 11 denotes an opening that opens tangentially to the small cylindrical portion 5a of the head 5, and is connected to an exhaust gas extraction pipe 12.
１３は前記円筒部３の上下方向中ほどに且つ接線方向で
設けられた開口部で、第二ガス導入管１４に接続されて
いる。Reference numeral 13 denotes an opening provided in the middle of the cylindrical portion 3 in the vertical direction and in the tangential direction, and is connected to the second gas introduction pipe 14 .
１５．１５’は前記下窄部２に２方向がら開口する開口
部で、それぞれ第三ガス導入管１６．１６’に接続され
ている。Reference numerals 15 and 15' denote openings that open in two directions in the lower narrowed portion 2, and are respectively connected to third gas introduction pipes 16 and 16'.
また、該各開口部１５．１５’は燃焼室６軸心に対して
偏心して且つ互いに対称位置で設けられており、その相
対偏心量Ｌと第一ガス導入管７の内径Ｄとは近い値にさ
れている。Further, each of the openings 15, 15' is provided eccentrically with respect to the 6-axis center of the combustion chamber and at symmetrical positions with respect to each other, and the relative eccentricity L thereof and the inner diameter D of the first gas introduction pipe 7 are close to each other. It is being done.
更に、両開口部１５．１５’から吹き込まれるガスの流
れる方向及び前記頭部５の開口部１１がら排出されるガ
スの流れる方向がそれぞれ前記円筒部３の開口部１３か
ら吹き込まれるガスの流れる方向と一致するようにされ
ている。Furthermore, the flow direction of the gas blown in from both openings 15, 15' and the flow direction of the gas discharged from the opening 11 of the head 5 are the flow directions of the gas blown in from the opening 13 of the cylindrical part 3, respectively. It is made to match.
そして、前記第二及び第三ガス導入管１４，１６．１６
’の他端は焼或されたセメント原料のタリンカクーラ部
（図示せず）に接続されて、燃焼室６にクーラ抽気ガス
が吹き込まれる。and the second and third gas introduction pipes 14, 16.16.
The other end is connected to a tarinka cooler section (not shown) for the burned cement raw material, and cooler bleed gas is blown into the combustion chamber 6.
次に、作用を説明すると、先ず、粉末原料投入管９より
第一ガス導入管７に約８００℃に昇温されたセメント原
料１７が投入される。Next, to explain the operation, first, the cement raw material 17 heated to about 800° C. is charged from the powder raw material input pipe 9 to the first gas introduction pipe 7 .
そして、この第一ガス導入管７に投入されたセメント原
料１７は、キルンからの排ガスによって燃焼室６の下方
に、即ち下窄部２に吹き上げられる。The cement raw material 17 introduced into the first gas introduction pipe 7 is blown up into the lower part of the combustion chamber 6, that is, into the lower narrowed part 2, by the exhaust gas from the kiln.
該下窄部２には第三ガス導入管１６．１６’を介して両
開口部１５．１５’よりクーラ抽気ガスが吹き込まれて
いるので、セメント原料１７は旋回すると共にバーナ１
０によって仮焼させながら円筒部３に上昇し、更に、第
二力゛ス導入管１４のクーラ抽気ガスによって、セメン
ト原料１７は頭部５へと旋回上昇し、その間に十分仮焼
される。Cooler bleed gas is blown into the lower narrowed part 2 from both openings 15.15' through the third gas introduction pipe 16.16', so that the cement raw material 17 is rotated and the burner 1
0, the cement raw material 17 rises to the cylindrical portion 3 while being calcined, and further, by the cooler bleed gas from the second force introduction pipe 14, the cement raw material 17 swirls and rises to the head 5, where it is sufficiently calcined.
頭部５に至ったセメント原料１７はその球面状蓋部５ｂ
に沿って流れ、開口部１１より排ガス抜取管１２に移動
していく。The cement raw material 17 that has reached the head 5 has a spherical lid portion 5b.
, and moves from the opening 11 to the exhaust gas extraction pipe 12.
そして、このように十分仮焼されたセメント原料は排ガ
スと分離され、キルンに送られて焼或される。The cement raw material that has been sufficiently calcined in this way is separated from the exhaust gas and sent to a kiln where it is burned.
このように本仮焼炉においては、仮焼炉の各壁体からク
ーラ抽気ガスを吹き込み燃焼室で旋回上昇流を形戒して
いるので、セメント原料が炉壁に停滞することがなく、
コーティングトラブルは生じない。In this way, in this calciner, cooler bleed gas is blown from each wall of the calciner to create a swirling upward flow in the combustion chamber, so cement raw materials do not stagnate on the furnace walls.
No coating problems occur.
そして、燃焼室頭部が絞られているので、流れが安定化
し、均一な仮焼及び排ガス抜取りを行なうことができ、
また、燃焼室には突出物及び壁体の急激な変化がないの
で、吹き込まれるガスの圧損が少ない。Since the head of the combustion chamber is constricted, the flow is stabilized and uniform calcination and exhaust gas extraction can be performed.
Furthermore, since there are no protrusions or sudden changes in the walls of the combustion chamber, there is little pressure loss in the gas being blown into the combustion chamber.
更に、第三ガス導入管より下窄部の燃焼室に吹き込まれ
るクーラ抽気ガス量をバーナ焚量に対して空気過剰率が
１．０以下になるようにし、残りのクーラ抽気ガス量を
第二ガス導入管より吹き込むようにすれば、燃焼室下窄
部を脱硝部として、燃焼室円筒部及び上窄部を仮焼部と
して使用できる。Furthermore, the amount of cooler bleed gas blown into the combustion chamber in the lower narrow part from the third gas inlet pipe is set so that the air excess ratio is 1.0 or less with respect to the burner firing amount, and the remaining amount of cooler bleed gas is If the gas is blown in through the gas introduction pipe, the lower narrowed part of the combustion chamber can be used as the denitration part, and the cylindrical part and the upper narrowed part of the combustion chamber can be used as the calcining part.
これにより、排ガスの脱硝が十分できると同時にセメン
ト原料の十分な仮焼ができる。This allows sufficient denitrification of the exhaust gas and at the same time sufficient calcining of the cement raw material.
なお、前記第二及び第三ガス導入管にはクーラ抽気ガス
量を調節する手段（図示せず）がそれぞれ設けられてい
ることは言うまでもない。It goes without saying that the second and third gas introduction pipes are each provided with means (not shown) for adjusting the amount of cooler bleed gas.
また、図において、矢印はセメント原料、キルン排ガス
及びクーラ柚気ガスの流れる方向を示すものである。Further, in the figure, arrows indicate the flow directions of cement raw materials, kiln exhaust gas, and cooler gas.
以上のように、本考案の仮焼設備によれば、燃焼室の底
部、下窄部及び円筒部からガスを吹き込んで旋回上昇流
を形或しているので、粉末原料によるコーアイングトラ
ブルはなく、また、吹き込まれたガズをスムースに排出
できる。As described above, according to the calcination equipment of the present invention, gas is blown from the bottom, lower narrowed part, and cylindrical part of the combustion chamber to form a swirling upward flow, so there is no problem of coering caused by powder raw materials. Also, the blown gas can be smoothly discharged.
更に、燃焼室の下窄部及び円筒部に吹き込まれているガ
ス量を調節すれば、燃焼室下窄部を脱硝用として使用で
き、また、燃焼室円筒部を仮焼用として使用でき、従っ
て、燃焼室底部から吹き込まれる排ガスの十分な脱硝が
できると同時に粉末原料の十分な仮焼をすることができ
る。Furthermore, by adjusting the amount of gas blown into the lower narrow part and the cylindrical part of the combustion chamber, the lower narrow part of the combustion chamber can be used for denitration, and the cylindrical part of the combustion chamber can be used for calcination. , the exhaust gas blown from the bottom of the combustion chamber can be sufficiently denitrated, and at the same time, the powder raw material can be sufficiently calcined.
第１図は本考案の一実施例の縦断面図、第２図は第１図
のＡ−Ａ矢視図、第３図は同Ｂ−Ｂ矢視図、第４図は同
Ｃ−Ｃ矢視図である。
１・・・・・・仮燃炉、２・・・・・・下窄部、３・・
・・・・円筒部、４・・・・・・上窄部、５・・・・・
・頭部、６・・・・・・燃焼室、７・・・・・・第一ガ
ス導入管、９・・・・・・粉末原料投入管、１０・・・
・・・バーナ、１１，１３，１５．１５’・・・・・開
口部、１２・・・・・・排ガス抜取管、１４・・・・・
・第二ガス導入管、１６．１６’・・・・・・第三ガス
導入管。Fig. 1 is a longitudinal sectional view of an embodiment of the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, Fig. 3 is a view taken along the line B-B in Fig. 1, and Fig. 4 is a view taken along the line C-C in the same. It is an arrow view. 1... Temporary combustion furnace, 2... Lower narrowed part, 3...
... Cylindrical part, 4... Upper narrowed part, 5...
- Head, 6... Combustion chamber, 7... First gas introduction pipe, 9... Powder raw material input pipe, 10...
... Burner, 11, 13, 15.15'... Opening, 12... Exhaust gas extraction pipe, 14...
-Second gas introduction pipe, 16.16'...Third gas introduction pipe.
Claims (1)
端に接続する円筒部と、該円筒部の上端に接続する上狭
まり状の上窄部と、該上窄部の上端に接続する有蓋円筒
状の頭部とから構或し、前記下窄部下端に第一ガス導入
管を接続し、該第一ガス導入管の途中に粉末原料投入管
を接続し、前記下窄部に燃焼室中心に向って複数個のバ
ーナを設け、前記頭部に接線方向で開口する排ガス抜取
管を設け、前記円筒部に接線方向で開口する第二ガス導
入管を設け、前記下窄焙ｉの両側に開口する第三ガス導
入管を設け、前記頭部の排ガス抜取管の開口部を前記円
筒部第二ガス導入管の開口部よりのガスの流れる方向に
沿うように威し、前記下窄部の両側に開口する第三ガス
導入管の両開口部を互いに燃焼室軸心に対して偏心させ
て且つ対称位置に設けると共に該両開口部よりのガスの
流れる方向を前記第二ガス導入管の開口部よりのガスの
流れる方向と同一になるようにしたことを特徴とする粉
末原料の仮焼設備。The combustion chamber of the calcination furnace includes a lower narrowed part that expands upward, a cylindrical part that connects to the upper end of the lower narrowed part, an upper narrowed part that narrows upward and connects to the upper end of the cylindrical part, and the upper narrowed part. a capped cylindrical head connected to the upper end; a first gas introduction pipe is connected to the lower narrowed lower end; a powder raw material input pipe is connected in the middle of the first gas introduction pipe; A plurality of burners are provided in the lower narrow part toward the center of the combustion chamber, an exhaust gas extraction pipe is provided in the head part that opens in a tangential direction, a second gas introduction pipe is provided in the cylindrical part that opens in a tangential direction, and the A third gas inlet pipe is provided that opens on both sides of the lower constriction pipe, and the opening of the exhaust gas extraction pipe in the head is aligned in the direction of gas flow from the opening of the second gas inlet pipe in the cylindrical part. Both openings of the third gas inlet pipe that open on both sides of the lower narrowed portion are provided eccentrically and symmetrically with respect to the axis of the combustion chamber, and the direction of flow of gas from the two openings is set as described above. A powder raw material calcination equipment characterized in that the direction is the same as the direction in which gas flows from the opening of the second gas introduction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5373780U JPS595715Y2 (en) | 1980-04-18 | 1980-04-18 | Powder raw material calcination equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5373780U JPS595715Y2 (en) | 1980-04-18 | 1980-04-18 | Powder raw material calcination equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56156841U JPS56156841U (en) | 1981-11-24 |
| JPS595715Y2 true JPS595715Y2 (en) | 1984-02-21 |
Family
ID=29648537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5373780U Expired JPS595715Y2 (en) | 1980-04-18 | 1980-04-18 | Powder raw material calcination equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595715Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170115563A (en) * | 2015-02-12 | 2017-10-17 | 미츠비시 마테리알 가부시키가이샤 | Flow calcined |
-
1980
- 1980-04-18 JP JP5373780U patent/JPS595715Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56156841U (en) | 1981-11-24 |
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