JPS6358091A - Jet layer granulating furnace - Google Patents
Jet layer granulating furnaceInfo
- Publication number
- JPS6358091A JPS6358091A JP20083086A JP20083086A JPS6358091A JP S6358091 A JPS6358091 A JP S6358091A JP 20083086 A JP20083086 A JP 20083086A JP 20083086 A JP20083086 A JP 20083086A JP S6358091 A JPS6358091 A JP S6358091A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- air
- spouted bed
- cone
- group
- 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.)
- Pending
Links
- 230000003179 granulation Effects 0.000 claims description 20
- 238000005469 granulation Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 12
- 238000010304 firing Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002577 polybenzoxazole Polymers 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は噴流層造粒炉、詳しくは粉１体の原料を、噴
流１ａとして加熱、溶融させながら造粒する噴流層造粒
炉に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spouted bed granulation furnace, and more particularly, to a spouted bed granulation furnace that granulates a powdered raw material while heating and melting it as a jet stream 1a. It is.
従来より、第７因に示す噴流層造粒炉１がある。 Conventionally, there is a spouted bed granulation furnace 1 shown in the seventh factor.
第７図において、噴流層造粒炉１は、スロート部２から
予熱された予熱ガスＡを、−万、スロート部２の上部か
ら燃料Ｂを、それぞれ導き、燃料Ｂの燃焼により高温状
態に保たれている炉内で、例えばセメント原料粉の様な
粉体の原料Ｃに大きな噴流りを与えながら、原料Ｃの一
部を溶融させ、粒子に付着させることにより、造粒する
。この噴流層造粒炉１は、一般に、噴流流動層式（たと
えば、特公昭４８−１４５６１号公報参照）に比べて、
噴流層造粒炉内へ供給するガスの流量が少な（できるた
め、熱損失が小さい。In FIG. 7, the spouted bed granulation furnace 1 guides preheated gas A from the throat part 2 and fuel B from the upper part of the throat part 2, and maintains the fuel B in a high temperature state by combustion. In a furnace where the powder is dripping, a large jet stream is applied to the powdered raw material C, such as cement raw material powder, while a part of the raw material C is melted and attached to the particles, thereby granulating the raw material C. This spouted bed granulation furnace 1 generally has the following features compared to a spouted fluidized bed type (for example, see Japanese Patent Publication No. 48-14561):
The flow rate of gas supplied into the spouted bed granulation furnace is small (because it can be done), heat loss is small.
ところが、上記噴流層造粒炉１では、コーン部８の内壁
面８ａに沿って降下して移動する移ｗＪ層の粒子Ｅが、
コーン部８の内壁面３ａに付着し、コーチングＦとなり
、炉の円滑な運転ができないという問題があった。However, in the spouted bed granulation furnace 1, the particles E of the moving wJ layer that descend and move along the inner wall surface 8a of the cone portion 8,
There was a problem in that it adhered to the inner wall surface 3a of the cone portion 8 and formed a coating F, making it impossible to operate the furnace smoothly.
その原因については、従来は、移動１−の粒子Ｅの運動
が小さいためであると考えられていた。ところが、この
発明者らの研究によれは、燃料Ｂが燃焼して、温度が高
いコーン部３の下部はど、上記コーチングが生じ易いこ
とから、上記コーチング現象は、上記運動の小さい移動
層の粒子Ｅが高温状態のコーン部に付着するためである
と推測される。The reason for this was conventionally thought to be that the movement of the particle E in the movement 1- was small. However, according to the research of the inventors, the above-mentioned coating is likely to occur in the lower part of the cone portion 3 where the temperature is high when the fuel B is burned, and therefore the above-mentioned coating phenomenon is caused by the movement of the moving layer with small movement. It is presumed that this is because the particles E adhere to the cone part in a high temperature state.
この発明は上記従来の問題点に鑑みてなされたもので、
コーチング現象が発生するのを防止することによって、
円滑な運転を図り得る噴流層造粒炉を提供することを目
的としている。This invention was made in view of the above-mentioned conventional problems.
By preventing the coaching phenomenon from occurring,
The purpose of the present invention is to provide a spouted bed granulation furnace that can operate smoothly.
上記目的を連成するために、この発明は、噴流層造粒炉
の下部のコーン部に冷媒を導いて上記コーン部を冷却す
る冷却通路が設けられている。In order to achieve the above object, the present invention is provided with a cooling passage that guides a refrigerant to a lower cone portion of a spouted bed granulation furnace to cool the cone portion.
この発明によれば、冷却通路により冷媒がコーン部に導
かれるので、コーン部が冷却されるから、移動層の粒子
がコーン部の内壁面に付着しない。According to this invention, since the refrigerant is guided to the cone part by the cooling passage, the cone part is cooled, so that particles of the moving layer do not adhere to the inner wall surface of the cone part.
したがって、コーチング現象の発生を防止し得る。Therefore, the coaching phenomenon can be prevented from occurring.
以下、この発明の実施例を図面にしたがって説明する。 Embodiments of the present invention will be described below with reference to the drawings.
、第１図はこの発明の第１の実施例を示す。第１図に詔
いて、粉体のたとえばセメント原料Ｃは、噴流層造粒炉
１および流動層焼成炉７の燃焼排ガスＧによって、ザイ
クロン５で予熱された後、フラップダンパ６を経て、噴
流層造粒炉１に投入されて造粒される。この造粒された
造粒物Ｈは、上記焼成炉７に導入され、この焼成炉７で
焼成されて、セメントクリンカＩが次工程へ排出される
。, FIG. 1 shows a first embodiment of the invention. As shown in FIG. 1, a powder, for example, a cement raw material C, is preheated in a Zylon 5 by the combustion exhaust gas G of the spouted bed granulation furnace 1 and the fluidized bed calcining furnace 7, and then passed through a flap damper 6 and then passed through the spouted bed. It is put into a granulation furnace 1 and granulated. The granulated granules H are introduced into the firing furnace 7, where they are fired, and the cement clinker I is discharged to the next step.
−万、焼成？７の下部から供給される流動化ガスＪは、
焼成炉７の燃焼空気として使用されて、加熱された役ス
ロート部２へ排出される。この加熱ガスＡは、燃料Ｂの
燃焼空気として使用されるとともに、噴流層造粒炉１内
に噴流りを与える。-Man, firing? The fluidizing gas J supplied from the bottom of 7 is
It is used as combustion air for the firing furnace 7 and is discharged to the heated throat section 2. This heated gas A is used as combustion air for fuel B, and also provides a jet stream within the spouted bed granulation furnace 1 .
上記噴流層造粒炉１は、直胴部８およびテーパ管状のコ
ーン部８からなり、上部に排ガスＧのυＦ気連通路２０
、下部にスロート部２を有し、このスロート部２を介し
て焼成炉７に連通しでいる。The spouted bed granulation furnace 1 consists of a straight body part 8 and a tapered tubular cone part 8, and has a υF air communication passage 20 for exhaust gas G in the upper part.
, has a throat part 2 at the lower part thereof, and communicates with a firing furnace 7 via this throat part 2.
９はバーナで、スロート部２におけるコーン部３との接
続部の近傍に設けられ、供給された燃料Ｂを上記加熱ガ
スＡにより燃焼させる。Reference numeral 9 denotes a burner, which is provided in the vicinity of the connection part with the cone part 3 in the throat part 2, and burns the supplied fuel B with the heating gas A.
上記コーン部８を形成する斜壁３ｂには、冷却通路であ
る多数の小孔８ｃが、炉内へ向って斜め下方に穿設され
ている。これらの小孔３ｃは噴流層造粒炉１の下部のコ
ーンｓ８に冷媒、この実施例の場合パルスエアＫを導い
て、コーン部３を冷却するもので、第２図のように、放
射状に配設されている。上記小孔３ｃは、たとえば、円
周方向に第１群ないし第６群ＩＧ・・・６Ｇに分割され
、第１群から第６群ＩＧ・・・６Ｇの順序で順次エアを
一時的に噴射する。つまり、小孔３ｃを群管理して、パ
ルスエアＫ（第１図参照）を噴射する。この噴射の順序
は任意に設定すれば良く、第１群ＩＧ。In the inclined wall 3b forming the cone portion 8, a large number of small holes 8c serving as cooling passages are bored diagonally downward toward the inside of the furnace. These small holes 3c are for guiding a refrigerant, in this embodiment, pulsed air K, into the cone s8 at the bottom of the spouted bed granulation furnace 1 to cool the cone portion 3, and are arranged radially as shown in FIG. It is set up. The small hole 3c is divided into, for example, the first group to the sixth group IG...6G in the circumferential direction, and air is temporarily injected sequentially from the first group to the sixth group IG...6G. do. That is, the small holes 3c are controlled in groups and pulsed air K (see FIG. 1) is injected. The order of this injection may be set arbitrarily, and the first group IG.
第８群８Ｇ、第５群５Ｇ、第６群６Ｇ、第２群２Ｇ、第
４群４Ｇの順でも良く、あるいは、第１群ＩＧ、第４群
４Ｇ、第６群６Ｇ、第３群８Ｇ、第５群５Ｇ、第２群２
Ｇの順でも良い。The order may be 8th group 8G, 5th group 5G, 6th group 6G, 2nd group 2G, and 4th group 4G, or 1st group IG, 4th group 4G, 6th group 6G, and 3rd group 8G. , 5th group 5G, 2nd group 2
It may be in the order of G.
上記構成において、この実施例は、第１図のコーンｓ８
にパルスエアＫを導く小孔８ｃを設けて、上記コーン部
８を冷却している。さらに、移動層（７）粒子Ｅはパル
スエアＫにより冷却されて、粘着力が低下する。このよ
うに、コーン部３および粒子Ｅが冷却されるので、コー
ン部８の内壁面８ａに沿って移臨する移Ｍ層の粒子Ｅは
、その移動速度が小さくても、上記内壁間３ａに付着す
るおそれがない。したがって、内壁面３ａにはコーチン
グの生じるおそれがないから、炉の安定な運転を図り得
る。In the above configuration, in this embodiment, the cone s8 in FIG.
The cone portion 8 is cooled by providing a small hole 8c through which pulsed air K is introduced. Furthermore, the particles E of the moving layer (7) are cooled by the pulsed air K, and their adhesive strength is reduced. In this way, since the cone part 3 and the particles E are cooled, the particles E of the transfer M layer moving along the inner wall surface 8a of the cone part 8 can move between the inner walls 3a even if the moving speed is small. There is no risk of adhesion. Therefore, since there is no possibility of coating occurring on the inner wall surface 3a, stable operation of the furnace can be achieved.
また、この実施例では、上記小孔８ｃから炉内へパルス
エアＫが導入されるから、パルスエアにの衝撃力により
、コーン部３の内壁面８ａと粒子Ｅとの付着、ならびに
、粒子Ｅ相互の付着を防止し得る。また、小孔３ｃが炉
内へ同って斜め下方に設けられているから、この小孔３
ｃに粒子Ｅが目詰するおそれがない。Further, in this embodiment, since the pulsed air K is introduced into the furnace through the small hole 8c, the impact force of the pulsed air causes the particles E to adhere to the inner wall surface 8a of the cone portion 3, and the particles E to mutually adhere to each other. Can prevent adhesion. In addition, since the small hole 3c is provided diagonally downward into the furnace, this small hole 3c
There is no risk that particles E will clog c.
ところで、上記パルスエアＫを炉内に導入することによ
り、噴流層内の圧力のバランスがくずれることが考えら
れる。ここで、この実施例は、多数の小孔３ｃを群に分
割して、上記パルスエアＫを第２図の各群ＩＧ・・・６
Ｇから順次噴射しているから、−時に大量のエアが導入
されないので、上記バランスのくずれが生じるおそれが
少ない。By the way, by introducing the above-mentioned pulsed air K into the furnace, it is possible that the pressure balance in the spouted bed is disrupted. Here, in this embodiment, a large number of small holes 3c are divided into groups, and the pulsed air K is distributed to each group IG...6 in FIG.
Since the injection is performed sequentially starting from G, a large amount of air is not introduced at -, so there is less risk of the imbalance occurring.
な＄、上記小孔８ｃは、第８図の第２の実施例のように
、その配置が千鳥状でも良く、この場合には、内側の小
孔３Ｃを第１群、外側の小孔３Ｃを第２群として、群管
理しても良い。また、この小？ｌｌＣからパルスエアＫ
（第１図）ではなく、連続的なエアを供給しても良い。The small holes 8c may be arranged in a staggered manner as in the second embodiment shown in FIG. may be grouped as the second group for group management. Also, this small? llC to pulse air K
Instead of (FIG. 1), continuous air may be supplied.
第４図はこの発明の第８の実施例を示す。第４図におい
て、１０は冷却通路であるエアジャケットで、コーン部
８の外周面に沿ってエアＫが流れるような、構造にされ
、コーン部８を冷却するものである。１１は冷媒供給路
で、その一端が、焼成炉７に導入される流動化ガスＪの
ガス供給路１２に連通し、他端が上記エアジャケット１
０に連通している。１３および１４は流量調整弁で、そ
れぞれ、冷媒供給路１１およびガス供給路１２に設けら
れ、上記両供給路１１．１２を流れるエアに、Ｍの包を
調整する。１５は冷媒排出路で、その一端が焼成炉７の
フリーボード部７ａに連通し、他端がエアジャケット１
０に連通している。FIG. 4 shows an eighth embodiment of the invention. In FIG. 4, reference numeral 10 denotes an air jacket serving as a cooling passage, which is structured so that air K flows along the outer peripheral surface of the cone portion 8 to cool the cone portion 8. Reference numeral 11 denotes a refrigerant supply passage, one end of which communicates with the gas supply passage 12 for fluidizing gas J introduced into the firing furnace 7, and the other end communicating with the air jacket 1.
Connected to 0. Flow control valves 13 and 14 are provided in the refrigerant supply path 11 and the gas supply path 12, respectively, and adjust the envelope of M to the air flowing through both the supply paths 11 and 12. 15 is a refrigerant discharge passage, one end of which communicates with the freeboard portion 7a of the firing furnace 7, and the other end of which communicates with the air jacket 1.
Connected to 0.
その他の構成は第１の実施例と同様であり、同一部分も
しくは相当部分に同一符号を附して、その詳しい説明を
省略する。The rest of the configuration is the same as that of the first embodiment, and the same or corresponding parts are given the same reference numerals and detailed explanation thereof will be omitted.
上記構成において、この実施例は、コーン部３を冷却し
て昇温したエアＫを、冷媒排出路１５によって焼成炉７
に導入し、燃料Ｂを燃焼させる加熱ガスＡとして利用し
ている。したがって、系の熱エネルギを有効に回収し得
る。ところで、エアにはエアジャケット１０内の圧損に
より圧力が低下する。ここで、この実施例は、上記エア
Ｋを高圧なガス供給路１２ではなく、これよりも低圧な
フリーボード部７ａに導入することにより、このエアに
の回収を可能にしている。In this embodiment, in the above configuration, air K whose temperature has been raised by cooling the cone portion 3 is passed through the refrigerant discharge path 15 to the firing furnace 7.
It is used as heating gas A to combust fuel B. Therefore, the thermal energy of the system can be effectively recovered. Incidentally, the pressure of the air decreases due to pressure loss within the air jacket 10. Here, in this embodiment, the air K is introduced into the freeboard section 7a, which has a lower pressure, instead of the high-pressure gas supply path 12, thereby making it possible to recover the air.
第５図に示す第４の実施例では、水ジャケット２１がコ
ーン部８におけるスロート部２の近傍にのみ設けられ、
上記水ジヤケツト２１内に導入される冷却水Ｎがコーン
部８の外周面に沿って流れ、コーン部３の比較的温度の
高い部分を冷却している。この実施例によれは、不必要
に噴流層造粒炉１が冷却されるのを防止し得るので、コ
ーン部３を冷却することによる熱エネルギのロスが小さ
くなる。In the fourth embodiment shown in FIG. 5, a water jacket 21 is provided only in the vicinity of the throat portion 2 in the cone portion 8,
The cooling water N introduced into the water jacket 21 flows along the outer circumferential surface of the cone portion 8, cooling the relatively high temperature portion of the cone portion 3. According to this embodiment, the spouted bed granulation furnace 1 can be prevented from being cooled unnecessarily, so that the loss of thermal energy due to cooling the cone portion 3 is reduced.
第６図は第５の実施例の要部を示す。この図に詔いて、
冷却通路は、コーン部３の外周面に設けられたエアジャ
ケット１０と、このエアジャケット１０に連通ずる多数
の小孔３Ｃとから構成されている。つまり、エアには、
まずエアジャケット１０に供給されて、ここでコーン８
８を外周面から冷却し、ついで小孔８Ｃから炉内へ導入
されることにより、コーン部８を冷却するとともに、エ
アにの１！ｊｃ力によって、粒子の内Ｑｉ８ａへの付着
、ならひに粒子相互の付着を防止する。FIG. 6 shows the main part of the fifth embodiment. I prayed to this picture,
The cooling passage is composed of an air jacket 10 provided on the outer peripheral surface of the cone portion 3 and a large number of small holes 3C communicating with the air jacket 10. In other words, for air,
First, it is supplied to the air jacket 10, where the cone 8
8 is cooled from the outer circumferential surface and then introduced into the furnace through the small hole 8C, thereby cooling the cone portion 8 and adding 1! to the air. The jc force prevents particles from adhering to Qi8a and from adhering to each other.
以上説明したように、この発明によれば、コーン部を冷
却する冷却通路を設けたから、コーチング現象の発生を
防止し得るので、噴流層造粒炉の円滑な運転を図り得る
。As explained above, according to the present invention, since the cooling passage for cooling the cone portion is provided, the occurrence of the coating phenomenon can be prevented, so that the spouted bed granulation furnace can be operated smoothly.
第１図はこの発明の第１の実施汐らを示す概略構成図、
第２図は第１図の１−１線断面図、第８因は第２の実施
例を示し、第１図の１１線１１ｉ１ｒ面図、第４図は第
８の実施例を示す概略構成図、第５図は第４の実施例を
示す概略構成図、第６図は毘５の実施例を示す要部の断
面図、第７図は従来例の概略構成図である。
１・・・噴流層造粒炉、３・・・コーン部、８ｃ・・・
小孔（冷却通路）、１０・・・エアジャケット（冷却通
路）、２１・・・水ジャケット（冷却通路）、Ｋ・・・
パルスエア（冷媒）、Ｎ・・・冷却水（冷媒）。
特 許 出 願 人 川崎重工業株式会社ｉ７ ＋；
ｒ：’、”１、−・′
代 理 １人 弁理士 雑波 日英（外１名／ −！
；ｉ：：、、、、、；第１ 図
第２図
第３図
第４図
第５図
第６図FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention;
2 is a sectional view taken along line 1-1 in FIG. 1, the eighth factor shows the second embodiment, the 11i1r sectional view taken along line 11 in FIG. 1, and FIG. 4 is a schematic configuration showing the eighth embodiment. FIG. 5 is a schematic configuration diagram showing the fourth embodiment, FIG. 6 is a sectional view of a main part of the second embodiment, and FIG. 7 is a schematic configuration diagram of a conventional example. 1... Spouted bed granulation furnace, 3... Cone part, 8c...
Small hole (cooling passage), 10... Air jacket (cooling passage), 21... Water jacket (cooling passage), K...
Pulse air (refrigerant), N...Cooling water (refrigerant). Patent applicant: Kawasaki Heavy Industries, Ltd. i7+;
r:',"1,-・' Agent: 1 Patent attorney: Japanese and English (1 other person/-!
；i：：、、、、、;Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6
Claims (1)
ら造粒する噴流層造粒炉において、この噴流層造粒炉の
下部のコーン部に冷媒を導いて上記コーン部を冷却する
冷却通路が設けられたことを特徴とする噴流層造粒炉。(1) In a spouted bed granulation furnace that granulates powder raw materials while heating and melting them as a spouted bed, cooling that cools the cone by introducing a refrigerant into the lower cone of the spouted bed granulation furnace. A spouted bed granulation furnace characterized by being provided with a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20083086A JPS6358091A (en) | 1986-08-26 | 1986-08-26 | Jet layer granulating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20083086A JPS6358091A (en) | 1986-08-26 | 1986-08-26 | Jet layer granulating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6358091A true JPS6358091A (en) | 1988-03-12 |
Family
ID=16430910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20083086A Pending JPS6358091A (en) | 1986-08-26 | 1986-08-26 | Jet layer granulating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6358091A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347377A (en) * | 1976-10-13 | 1978-04-27 | Hitachi Ltd | Preventing method for generation of lump at outlet part of feed nozzles for raw materials |
| JPS57156350A (en) * | 1981-03-17 | 1982-09-27 | Kawasaki Heavy Ind Ltd | Burning method and device for cement clinker or like |
-
1986
- 1986-08-26 JP JP20083086A patent/JPS6358091A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347377A (en) * | 1976-10-13 | 1978-04-27 | Hitachi Ltd | Preventing method for generation of lump at outlet part of feed nozzles for raw materials |
| JPS57156350A (en) * | 1981-03-17 | 1982-09-27 | Kawasaki Heavy Ind Ltd | Burning method and device for cement clinker or like |
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