JPS6046324B2 - Fluidized bed combustion control method and device - Google Patents
Fluidized bed combustion control method and deviceInfo
- Publication number
- JPS6046324B2 JPS6046324B2 JP52102638A JP10263877A JPS6046324B2 JP S6046324 B2 JPS6046324 B2 JP S6046324B2 JP 52102638 A JP52102638 A JP 52102638A JP 10263877 A JP10263877 A JP 10263877A JP S6046324 B2 JPS6046324 B2 JP S6046324B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- fluidized bed
- mixed gas
- gas
- main
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/003—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for pulverulent fuel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はＮｏ、低減流動層燃焼制御に関するものにし
て、更に詳細には、燃焼排ガスの一部を再循環して燃焼
用空気に混入した燃焼用混合ガスの一部を、分散板をバ
イパスして流動層内部および空筒部に送入するものにお
いて、ＮＯｘの発生量を低・減するとともに、流動層の
流動化を阻害することなく、燃焼排ガスの再循環量およ
び分散板をバイパスする燃焼用混合ガス量を制御するに
好適な流動層燃焼制御方法および装置に関するものであ
る。Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to reduced fluidized bed combustion control, and more particularly, to combustion in which part of the combustion exhaust gas is recirculated and mixed into combustion air. In a device that bypasses the dispersion plate and sends a part of the mixed gas into the fluidized bed and the cavity, it reduces the amount of NOx generated and does not impede the fluidization of the fluidized bed. The present invention relates to a fluidized bed combustion control method and apparatus suitable for controlling the amount of recirculation of combustion exhaust gas and the amount of combustion mixed gas that bypasses the distribution plate.
〔発明の背景〕
従来の流動層燃焼においては、第１図に示すように、
燃料供給管４によつて流動層燃焼容器１内の流動層２の
内部に燃料を供給し、ファン６に接続した空気導管５を
経由して、流動層燃焼容器１内の分散板３から流動層２
の底部に燃焼用空気を供給して流動層燃焼を行つていた
。[Background of the Invention] In conventional fluidized bed combustion, as shown in Figure 1,
Fuel is supplied to the interior of the fluidized bed 2 in the fluidized bed combustion vessel 1 through a fuel supply pipe 4, and fuel is supplied from the distribution plate 3 in the fluidized bed combustion vessel 1 via an air conduit 5 connected to a fan 6. layer 2
Fluidized bed combustion was performed by supplying combustion air to the bottom of the tank.
そして、燃焼排ガスは、ダスト捕集器７によつてダスト
を捕集された後、すべて燃焼排ガス流出管８によつて煙
突９に送られて放出されていた。従つて、流動層燃焼容
器１内においては、燃焼によつて発生するＮＯｘを低減
する処置が施されておらず、燃焼排ガス中のＮＯＯを低
減る場合には、流動層燃焼容器１以外の別箇の装置を用
いなければならないという欠点があつた。〔発明の目的
〕
本発明は、上記したような従来の流動層燃焼装置におけ
る欠点を改善するためになされたもので、燃焼によつて
発生するＮＯＯと未燃焼分とを低減することができる流
動層燃焼制御方法および装置を提供することを目的とす
るものである。After the dust of the combustion exhaust gas is collected by the dust collector 7, it is all sent to the chimney 9 through the combustion exhaust gas outflow pipe 8 and released. Therefore, no measures are taken to reduce NOx generated by combustion in the fluidized bed combustion vessel 1, and when reducing NOO in the combustion exhaust gas, it is necessary to use a separate device other than the fluidized bed combustion vessel 1. The disadvantage was that it required the use of multiple devices. [Object of the Invention] The present invention was made in order to improve the drawbacks of the conventional fluidized bed combustion apparatus as described above. It is an object of the present invention to provide a layer combustion control method and apparatus.
〔発明の＋既要〕要するに本発明は、燃焼用ガスとして
燃焼用空気に燃焼排ガスの一部を再循環して混入した燃
焼用混合ガスを用い、その燃焼用混合ガスを、分散板か
ら流動層底部に送入する分と、分散板をバイパスして流
動層内部および空筒部に送入する分とに分割する。[Additional Summary of the Invention] In short, the present invention uses a combustion mixture gas in which a part of combustion exhaust gas is recirculated and mixed into combustion air as a combustion gas, and the combustion mixture gas is flowed through a dispersion plate. It is divided into a portion that is fed to the bottom of the bed and a portion that is fed into the interior of the fluidized bed and the cavity by bypassing the distribution plate.
そして、分散板から流動層底部に送入する燃焼用混合ガ
スが、分散板をバイパスした分だけ減少するにもかかわ
らず、流動層の流動化を阻害しないようにして、分散板
をバイパスする燃焼用混合ガス量を増加できるように制
御することを特徴とするものてある。従つて、燃焼雰囲
気の酸素の高濃度と高温度とが燃焼におけるＮＯＯ発生
の要因であるが、本発明によれば、燃焼排ガスを燃焼用
空気に混入した混合ガスを燃焼用に用いることによつて
、燃焼雰囲気を環元性寄りすなわち酸素濃度を低下する
とともに、燃焼用混合ガスの一部を分散板をバイパスし
て流動層内部および空筒部に送入することによつて、燃
焼が局部的に集中することを平均化して燃焼温度を低下
している。Even though the combustion mixture gas sent from the distribution plate to the bottom of the fluidized bed is reduced by the amount that bypasses the distribution plate, the combustion that bypasses the distribution plate is done so as not to impede the fluidization of the fluidized bed. There is a device characterized by controlling the amount of mixed gas for use to be increased. Therefore, the high concentration of oxygen and high temperature in the combustion atmosphere are factors for the generation of NOO during combustion, but according to the present invention, by using a mixed gas for combustion in which combustion exhaust gas is mixed with combustion air, By making the combustion atmosphere more cyclic, that is, lowering the oxygen concentration, and by feeding a portion of the combustion mixture gas into the fluidized bed and cavity by bypassing the distribution plate, combustion is localized. The combustion temperature is lowered by averaging out the concentration of heat.
しかも、それによつて流動層の流動化が阻害されるよう
な副作用的障害を皆無にできるものであり、その効果は
顕著である。〔発明の実施例〕
以下に本発明の一実施例を第２図を参照して説明する。Moreover, it can completely eliminate any side effects such as inhibiting the fluidization of the fluidized bed, and the effect is remarkable. [Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIG.
第２図において、１は流動層燃焼容器、２は流動層、２
″は空筒部、３は分散板、４は燃料供給管、１５は主燃
焼用混合ガス送入管、１７，１８はそれぞれ分散板バイ
パス燃焼用混合ガス導管１６からの燃焼用混合ガスを流
動層２の内部および空筒部２″に送入する分散板バイパ
ス燃焼用混合ガス送入管である。そして、主燃焼用混合
ガス送入管１５には主燃焼用混合ガス量調整弁２０が、
また、分散板バイパス燃焼用混合ガス導管１６には分散
板バイパス燃焼用混合ガス量調整弁２１が、それぞれ設
けてある。流動層燃焼容器１内で発生する燃焼排ガスは
、ダスト捕集器７によつてダストを捕集除去されて、大
部分は燃焼排ガス流出管８を経て煙突９から大気へ放出
されるが、一部は燃焼排ガス再循環管１０に分流され、
燃焼排ガス再循環量調整弁１１、燃焼排ガス再循環ファ
ン１２、流量計測オリフィス１３を経由して、空気ファ
ン６に接続した空気導管５からの空気に混入されている
。In Fig. 2, 1 is a fluidized bed combustion vessel, 2 is a fluidized bed, 2
'' is a hollow cylinder part, 3 is a distribution plate, 4 is a fuel supply pipe, 15 is a main combustion mixed gas feed pipe, 17 and 18 are flow mixture gases for combustion from the distribution plate bypass combustion mixed gas conduit 16, respectively. This is a mixed gas feed pipe for dispersion plate bypass combustion that feeds into the inside of the layer 2 and the hollow cylindrical portion 2''. The main combustion mixed gas inlet pipe 15 has a main combustion mixed gas amount adjustment valve 20.
Further, the mixed gas conduit 16 for distributed plate bypass combustion is provided with a mixed gas amount adjustment valve 21 for distributed plate bypass combustion, respectively. The combustion exhaust gas generated in the fluidized bed combustion vessel 1 has dust collected and removed by the dust collector 7, and most of it passes through the combustion exhaust gas outlet pipe 8 and is released into the atmosphere from the chimney 9. part is diverted to the flue gas recirculation pipe 10,
It is mixed into the air from the air conduit 5 connected to the air fan 6 via the combustion exhaust gas recirculation amount adjustment valve 11, the combustion exhaust gas recirculation fan 12, and the flow rate measuring orifice 13.
空気と燃焼排ガスとが混合された燃焼用混合ガスは、燃
焼用混合ガス導管１４から分岐され、主部分は主燃焼用
混合ガス量調整弁２０を経て主燃焼用混合ガス送入管１
５によつて分散板３から流動層２の底部に送入される。
また、一部は分散板バイパス燃焼用混合ガス量調整弁２
１を経て分散板バイパス燃焼用混合ガス導管１６へ、更
に分散板バイパス燃焼用混合ガス送入管１７，１８に分
岐されて、それぞれ流動層２の内部および空筒部２″に
送入される。流量演算器１９は、分散板バイパス燃焼用
混合ガス量調整弁２から発信される分散板バイパス混合
ガス量変化信号２２に対応して、燃焼排ガス再循環量調
整弁１１と分散板バイパス燃焼用混合ガス量調整弁２１
とを連携的に制御するものである。The combustion mixed gas, which is a mixture of air and combustion exhaust gas, is branched from the combustion mixed gas conduit 14, and the main part passes through the main combustion mixed gas amount adjustment valve 20 and then flows into the main combustion mixed gas inlet pipe 1.
5 from the distribution plate 3 to the bottom of the fluidized bed 2.
In addition, part of the distribution plate bypass combustion mixed gas amount adjustment valve 2
1 to a mixed gas conduit 16 for dispersion plate bypass combustion, which is further branched into mixed gas inlet pipes 17 and 18 for dispersion plate bypass combustion, and is fed into the inside of the fluidized bed 2 and the hollow cylindrical portion 2'', respectively. .The flow rate calculator 19 responds to the distribution plate bypass mixed gas amount change signal 22 sent from the distribution plate bypass mixed gas amount adjustment valve 2 to adjust the combustion exhaust gas recirculation amount adjustment valve 11 and the distribution plate bypass combustion amount adjustment valve 2. Mixed gas amount adjustment valve 21
This is to control the functions in a coordinated manner.
また、主燃焼用混合ガス量調整弁２０は、主燃焼用混合
ガス量変化信号２３によつて独立的に制御できるように
なつている。このように構成してあるので、燃焼によつ
て発生するＮＯｘを低減するには、第１の点としては、
燃焼雰囲気の酸素濃度を下げるために、燃焼ガスとして
燃焼排ガスを空気に混入した燃焼用混合ガスを用いるこ
とであり、第２の点としては、燃焼温度を下げるために
、流動層内における燃焼反応を分散板から流動層底部に
送入する燃焼用混合ガスのみによる局部に集中させない
ように、一部の燃焼用混合ガスを分散板をバイパスして
、流動層内部および空筒部に送入し、燃焼反応を広い領
域に分散することである。Further, the main combustion mixed gas amount adjustment valve 20 can be independently controlled by the main combustion mixed gas amount change signal 23. With this configuration, the first point is to reduce NOx generated by combustion.
In order to lower the oxygen concentration in the combustion atmosphere, a combustion mixture gas in which combustion exhaust gas is mixed with air is used as the combustion gas.Secondly, in order to lower the combustion temperature, combustion reaction in the fluidized bed is used. In order to prevent the combustion mixture gas from being concentrated locally by only the combustion mixture gas sent from the distribution plate to the bottom of the fluidized bed, some of the combustion mixture gas is sent into the interior of the fluidized bed and the cavity, bypassing the distribution plate. , to disperse the combustion reaction over a wide area.
第１の点の操作としては、空気ファン６によつて空気導
管５から送られてくる空気中に、燃焼排ガス流出管８か
ら燃焼排ガス再循環ファン１２によつて燃焼排ガス再循
環管１０に分流した燃焼排ガスを、燃焼排ガス再循環量
調整弁１１によつて流量を調整して、流量計測オリフィ
ス１３を経由して混入する。In operation of the first point, the air sent from the air conduit 5 by the air fan 6 is diverted from the flue gas outlet pipe 8 to the flue gas recirculation pipe 10 by the flue gas recirculation fan 12. The flow rate of the combustion exhaust gas is adjusted by the combustion exhaust gas recirculation amount adjusting valve 11, and the combustion exhaust gas is mixed in through the flow rate measurement orifice 13.
そして、酸素濃度が低くなつた混合ガスを燃焼用混合ガ
ス導管１４から流動層燃焼容器１内に入れるようにする
。第２の点の操作としては、燃焼用混合ガス導管１４の
燃焼用混合ガスを分割して、一方の主燃焼用混合ガスは
、主燃焼用混合ガス量調整弁２０によつて流量を調整し
て、主燃焼用混合ガス送入管１５から分散板３を通して
流動層２の底部に供給し、他方の部分は、分散板バイパ
ス燃焼用混合ガス量調整弁２１によつて流量を調整して
、分散板バイパス燃焼用混合ガス導管１６から分散板バ
イパス燃焼用ガス送入管１７，１８を経由して、それぞ
れ流動層２の内部および空筒部２″に送入するようにす
る。Then, the mixed gas whose oxygen concentration has been reduced is introduced into the fluidized bed combustion vessel 1 from the combustion mixed gas conduit 14. As for the second point, the combustion mixed gas in the combustion mixed gas conduit 14 is divided, and the flow rate of one of the main combustion mixed gases is adjusted by the main combustion mixed gas amount adjustment valve 20. The mixed gas for combustion is supplied from the main combustion mixed gas inlet pipe 15 to the bottom of the fluidized bed 2 through the distribution plate 3, and the flow rate of the other part is adjusted by the distribution plate bypass combustion mixed gas amount adjustment valve 21. The mixture gas is supplied from the distribution plate bypass combustion gas conduit 16 to the inside of the fluidized bed 2 and the hollow cylindrical portion 2'' via the distribution plate bypass combustion gas inlet pipes 17 and 18, respectively.
以上において、分散板３を通して流動層２の底部に供給
する主燃焼用混合ガス量については、流量が過少となつ
て流動層２の流動化が阻害されないように、主燃焼用混
合ガス量変化信号２３によつて主燃焼用混合ガス量調整
弁２０を制御する。In the above, regarding the amount of the main combustion mixed gas supplied to the bottom of the fluidized bed 2 through the distribution plate 3, the main combustion mixed gas amount change signal is set so that the flow rate does not become too small and fluidization of the fluidized bed 2 is inhibited. 23 controls the main combustion mixed gas amount regulating valve 20.
また、分散板バイパス燃焼用混合ガス量を増加する場合
には、分散板バイパス燃焼用混合ガス量調整弁２１と燃
焼排ガス再循環量調整弁１１とを、燃焼排ガスの再循環
路に設けてある流量計測オリフィス１３の差圧信号と分
散板バイパス燃焼用混合ガス量変化信号２２とに応答す
る流量演算器１９によつて連携的に制御する。〔発明の
効果〕
以上の説明から明らかなように、本発明によれば、流動
層の流動化を阻害することなく、流動層燃焼容器内にお
ける燃焼雰囲気を環元性寄りの酸素濃度の低い雰囲気と
し、かつ、燃焼反応温度を合理的に低下することができ
るので、流動層燃焼におけるＮＯｘの生成と燃料の未燃
焼分とを効果的に低減することができる効果がある。In addition, when increasing the mixed gas amount for dispersion plate bypass combustion, a dispersion plate bypass combustion mixed gas amount adjustment valve 21 and a combustion exhaust gas recirculation amount adjustment valve 11 are provided in the combustion exhaust gas recirculation path. Control is performed cooperatively by a flow rate calculator 19 that responds to the differential pressure signal of the flow rate measurement orifice 13 and the distribution plate bypass combustion mixed gas amount change signal 22. [Effects of the Invention] As is clear from the above description, according to the present invention, the combustion atmosphere in the fluidized bed combustion vessel is changed to a cyclic atmosphere with a low oxygen concentration without inhibiting the fluidization of the fluidized bed. In addition, since the combustion reaction temperature can be reasonably lowered, it is possible to effectively reduce the generation of NOx and the unburned portion of fuel in fluidized bed combustion.
第１図は流動層燃焼装置の従来例を示す図、第２図は本
発明の一実施例になる流動層燃焼制御装置を示す図であ
る。
１・・・・・・流動層燃焼容器、２・・・・・・流動層
、２″・・空筒部、３・・・・・・分散板、４・・・・
・・燃料供給管、５・・・・空気導管、６・・・・・・
空気ファン、７・・・・・・ダスト捕集器、８・・・・
・・燃焼排ガス流出管、９・・・・・・煙突、１０・・
・・・・燃焼排ガス再循環管、１１・・・・・・燃焼排
ガス再循環量調整弁、１２・・・・・・燃焼排ガス再循
環ファン、１３・・・・・・流量計測オリフィス、１４
・・・・・・燃゛焼用混合ガス導管、１５・・・・・・
主燃焼用混合ガス送入管、１６・・・・・・分散板バイ
パス燃焼用混合ガス導管、１７，１８・・・・・・分散
板バイパス燃焼用混合ガス送入管、１９・・・・・・流
量演算器、２０・・・・・・主燃焼用混合ガス量調整弁
、２１・・・・・・分散板バイパス燃、焼用混合ガス量
調整弁、２２・・・・・・分散板バイパス混合ガス量変
化信号、２３・・・・・・主燃焼用混合ガス量変化信号
。FIG. 1 is a diagram showing a conventional example of a fluidized bed combustion apparatus, and FIG. 2 is a diagram showing a fluidized bed combustion control apparatus according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Fluidized bed combustion vessel, 2...Fluidized bed, 2''...Cavity part, 3...Dispersion plate, 4...
...Fuel supply pipe, 5...Air conduit, 6...
Air fan, 7...Dust collector, 8...
... Combustion exhaust gas outflow pipe, 9... Chimney, 10...
... Combustion exhaust gas recirculation pipe, 11 ... Combustion exhaust gas recirculation amount adjustment valve, 12 ... Combustion exhaust gas recirculation fan, 13 ... Flow rate measurement orifice, 14
...Mixed gas conduit for combustion, 15...
Main combustion mixed gas feed pipe, 16... Mixed gas feed pipe for dispersion plate bypass combustion, 17, 18... Mixed gas feed pipe for dispersion plate bypass combustion, 19... ...Flow rate calculator, 20...Mixed gas amount adjustment valve for main combustion, 21...Dispersion plate bypass combustion, mixed gas amount adjustment valve for combustion, 22...Dispersion Plate bypass mixed gas amount change signal, 23... Main combustion mixed gas amount change signal.
Claims (1)
ガスの一部を再循環して混入してなる燃焼用混合ガスを
、分散板より流動層底部に送入する主燃焼用混合ガスと
、分散板をバイパスして流動層内部に送入する分散板バ
イパス燃焼用混合ガスとに分割して、該主燃焼用混合ガ
ス量を流動層の流動化を阻害しない量に制御し、該排ガ
スの一部の再循環混入量と該分散板バイパス燃焼用混合
ガスの流量とを連携的に制御することを特徴とする流動
層燃焼制御方法。 ２ 流動層燃焼容器、流動層燃焼容器よりの排ガス一部
を燃焼用空気に混合して燃焼用混合ガスを造るための排
ガス再循環管にして排ガス再循環量調整弁を備えたもの
、該燃焼用混合ガスの主部分を該流動層燃焼容器内流動
層底部へ分散板より送入するための主燃焼用混合ガス送
入管にして主燃焼用混合ガス量調整弁を備えたもの、該
燃焼用混合ガスの該主部分以外の部分を該流動層燃焼容
器内の流動層内部および空筒部へ、分散板をバイパスし
て送入するためのバイパス燃焼用混合ガス導管にしてバ
イパス燃焼用混合ガス量調整弁を備えたものを有してな
るものにおいて、該排ガス再循環量調整弁と該バイパス
燃焼用混合ガス量調整弁とは連携的に制御されるように
されてなり、該主燃焼用混合ガス量調整弁は独立的に制
御されるようにされてなることを特徴とする流動層燃焼
制御装置。[Scope of Claims] 1. Main combustion in which a combustion mixture gas obtained by recirculating and mixing a part of the combustion exhaust gas with the combustion air for fuel in fluidized bed combustion is sent to the bottom of the fluidized bed from a dispersion plate. The mixed gas for main combustion is divided into the mixed gas for main combustion and the mixed gas for combustion by bypassing the dispersion plate and sent into the inside of the fluidized bed, and the amount of the mixed gas for main combustion is controlled to an amount that does not inhibit the fluidization of the fluidized bed. A fluidized bed combustion control method, characterized in that the amount of a part of the exhaust gas mixed in for recirculation and the flow rate of the mixed gas for dispersion plate bypass combustion are controlled in a coordinated manner. 2 Fluidized bed combustion vessel, an exhaust gas recirculation pipe equipped with an exhaust gas recirculation amount adjustment valve for mixing a part of the exhaust gas from the fluidized bed combustion vessel with combustion air to produce a combustion mixture gas, and the combustion A main combustion mixed gas inlet pipe equipped with a main combustion mixed gas amount adjustment valve for feeding the main part of the mixed gas to the bottom of the fluidized bed in the fluidized bed combustion vessel from the distribution plate; A mixed gas conduit for bypass combustion is used to supply a portion of the mixed gas other than the main portion to the inside of the fluidized bed and the cavity in the fluidized bed combustion vessel, bypassing the distribution plate. In the device equipped with a gas amount adjustment valve, the exhaust gas recirculation amount adjustment valve and the bypass combustion mixed gas amount adjustment valve are controlled in cooperation with each other, and the main combustion A fluidized bed combustion control device, characterized in that the mixed gas amount regulating valve is independently controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52102638A JPS6046324B2 (en) | 1977-08-29 | 1977-08-29 | Fluidized bed combustion control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52102638A JPS6046324B2 (en) | 1977-08-29 | 1977-08-29 | Fluidized bed combustion control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5436632A JPS5436632A (en) | 1979-03-17 |
| JPS6046324B2 true JPS6046324B2 (en) | 1985-10-15 |
Family
ID=14332773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52102638A Expired JPS6046324B2 (en) | 1977-08-29 | 1977-08-29 | Fluidized bed combustion control method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6046324B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02258413A (en) * | 1989-03-31 | 1990-10-19 | Asahi Glass Co Ltd | Fitting method for metal |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63279013A (en) * | 1987-05-07 | 1988-11-16 | Ebara Corp | Supressor for nox and unburnt gas in fluidized bed incinerator |
| JP5104701B2 (en) * | 2008-10-02 | 2012-12-19 | 住友大阪セメント株式会社 | Cement clinker manufacturing method and manufacturing apparatus |
-
1977
- 1977-08-29 JP JP52102638A patent/JPS6046324B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02258413A (en) * | 1989-03-31 | 1990-10-19 | Asahi Glass Co Ltd | Fitting method for metal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5436632A (en) | 1979-03-17 |
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