JPS5860107A - Heat treating furnace of fluidized bed type - Google Patents
Heat treating furnace of fluidized bed typeInfo
- Publication number
- JPS5860107A JPS5860107A JP56157707A JP15770781A JPS5860107A JP S5860107 A JPS5860107 A JP S5860107A JP 56157707 A JP56157707 A JP 56157707A JP 15770781 A JP15770781 A JP 15770781A JP S5860107 A JPS5860107 A JP S5860107A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized bed
- oxygen
- air
- gas
- fuel
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
本発咀は、流動層内に燃料および空気を供給して燃焼し
、前記流動層内の被処理物を加熱処理するよう忙した流
動層式熱処理炉Ｋｌｌする。DETAILED DESCRIPTION OF THE INVENTION The present invention uses a fluidized bed heat treatment furnace which is busy supplying fuel and air into a fluidized bed for combustion and heat treating a workpiece in the fluidized bed.
第１図を参照して、従来の流動層式熱処理炉では、熱風
発生炉ＩＫ矢符２，３で示すように燃料および空気を供
給し、熱風発生炉１で発生した熱風を炉本体４３におけ
る整流板５の下方から供給している＝−’ｌｌＫ板５の
上方では、前記熱風によって砂などの固形粒子が流動化
して流動層６が構成される・この流動層６内に浸漬され
た図示しない被処理物は、前記Ｉｉ形粒子との接触によ
って効率良く加熱される。−動層６から導出された排ガ
スは中イタリンなどの集塵器７で除塵された後、一部韓
歓出され、残余の排ガ界は矢符８で示すように供給され
る流動化空気とともに熱風発生炉ＩＫ戻さｈる。Referring to FIG. 1, in the conventional fluidized bed heat treatment furnace, fuel and air are supplied as shown by arrows 2 and 3 in the hot air generating furnace IK, and the hot air generated in the hot air generating furnace 1 is transferred to the furnace body 43. Supplied from below the current plate 5=-'llK Above the plate 5, the hot air fluidizes solid particles such as sand to form a fluidized bed 6. The object to be treated, which is not heated, is efficiently heated by contact with the type Ii particles. - After the exhaust gas led out from the moving bed 6 is removed by a dust collector 7 such as Nakaitalin, a part of it is discharged, and the remaining exhaust gas is made up of fluidized air supplied as shown by arrow 8. At the same time, the hot air generator IK is returned.
このような従来技術では、高温度の熱風が整流板５を流
過するので、整流板５が過熱して歪を生じたり、損傷し
たりする。In such a conventional technique, since high-temperature hot air flows past the current plate 5, the current plate 5 is overheated, causing distortion or damage.
先行技術では、上述の技術的１ｕｉｔを解決するために
、第２図で示すように１流動層６内に燃料、あるいは燃
料および空気の秋込み管９を設け、流動層６内で燃料を
燃焼するように構成している。In the prior art, in order to solve the above-mentioned technical problem, as shown in FIG. It is configured to do so.
このようにすると、高温度のガスが整流板５を流過する
ことがないので、整流板５の耐久性が向上する。In this way, high temperature gas will not flow through the current plate 5, so the durability of the current plate 5 will be improved.
ところが、流動層６内には固形粒子が存在するため、燃
料および空気の混合拡散が阻害される。However, the presence of solid particles in the fluidized bed 6 impedes the mixing and diffusion of fuel and air.
そのた５め、流動層６内で燃料の燃焼を完結させること
が困難であり、不完全燃焼の気体が炉本体４かも導出さ
れた後の系内で燃焼したり、着しい場合には爆発する危
険性がある。For this reason, it is difficult to complete the combustion of the fuel in the fluidized bed 6, and incompletely combusted gas may burn in the system after being discharged from the furnace body 4, or in serious cases, it may cause an explosion. There is a risk of
本発明は上述の技術的課題を解決し、流動層内で燃焼を
完結せしめるようにした流動層式熱処理炉を提供するこ
とを目的とする。An object of the present invention is to solve the above-mentioned technical problems and provide a fluidized bed heat treatment furnace in which combustion is completed within the fluidized bed.
以下、図面によって本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.
第３図は本発明の一実施例の系統図である。炉本体１０
内の下部には整流板１１が設けられており、この整流板
１１の上方には流動層１２が形成される。流動層１２の
下部には燃料吹込み管１３が設けられており、この燃料
吹込み管１３には、矢符１４で示すようにガス燃料が供
給される。整流板１１の下方に形成されたガス室１５に
は、８！形粒子を流動化して流動層１２を形成するため
の流動化空気と、ガス燃料を燃焼するための燃焼用空欠
。FIG. 3 is a system diagram of one embodiment of the present invention. Furnace body 10
A current plate 11 is provided at the lower part of the chamber, and a fluidized bed 12 is formed above the current plate 11. A fuel injection pipe 13 is provided below the fluidized bed 12, and gas fuel is supplied to the fuel injection pipe 13 as shown by an arrow 14. The gas chamber 15 formed below the rectifier plate 11 has 8! fluidizing air for fluidizing shaped particles to form a fluidized bed 12, and a combustion cavity for burning gaseous fuel.
とか、押込み送風機１６から管路１７を介して供給され
る。流動層１２で生じた燃焼排ガスは、管路１８からサ
イクレンなどの集塵器１９を介して排出される。なお、
−集塵器１９で清浄化された燃焼排ガスの一部は管路２
０を介して押込み送風機１６の入口に導かれており、そ
のため前記一部の燃焼排ガスは循環されており、したが
って燃焼排ガスの顕熱が有効に利用される。Or, it is supplied from a forced air blower 16 via a conduit 17. The combustion exhaust gas generated in the fluidized bed 12 is discharged from a pipe 18 via a dust collector 19 such as a cyclen. In addition,
- A part of the combustion exhaust gas purified by the dust collector 19 is transferred to the pipe 2
0 to the inlet of the forced air blower 16, the part of the combustion exhaust gas is therefore circulated, and therefore the sensible heat of the combustion exhaust gas is effectively utilized.
管路２０の途中には、管路２１を介して酸素富化空気供
給手段２２が接続される。この酸素富化空気供給手段２
２は、酸素選択透過膜２３を備える。酸素選択透過膜２
３は、たとえばポリジメチルシロキサンのような高分子
膜が用いられ、酸素透過率が１０〜Ｉ Ｏｏ−７（ｏｏ
−ａ／ａｍ −ｓｅａ−ａｍ−Ｈｇ ）であって、酸素
透過率と窒素透過率の比が２以上の選択性を有する膜が
好適する。このような酸素選択透過膜２３に空気を流通
させることにより、たとえば約３５≦程度まで酸素富化
された空気、が、管路２０に供給される。したがって、
炉本体ｌＯの流動層１２には酸素富化された空気、が供
給される。Oxygen-enriched air supply means 22 is connected to the middle of the pipe line 20 via a pipe line 21 . This oxygen enriched air supply means 2
2 includes an oxygen selectively permeable membrane 23. Oxygen selective permeable membrane 2
In No. 3, a polymer membrane such as polydimethylsiloxane is used, and the oxygen permeability is 10 to I Oo-7 (oo
-a/am-sea-am-Hg), and a membrane having selectivity with a ratio of oxygen permeability to nitrogen permeability of 2 or more is suitable. By flowing air through such an oxygen selective permeable membrane 23, air enriched with oxygen to, for example, about 35≦ is supplied to the pipe line 20. therefore,
Oxygen-enriched air is supplied to the fluidized bed 12 of the furnace body IO.
このようＫして、流動層１２では、ガス燃料と酸素富化
空気との燃焼反応が行なわれる。そのため、固形粒子に
よってガス燃料と酸素富化空気との混合拡散が阻害され
たとしても、空気、中の酸素濃度が比較的高いので、ガ
ス燃料社良好に燃焼し、流動層１２内で燃焼反応を完結
することができる。In this way, in the fluidized bed 12, a combustion reaction between the gas fuel and the oxygen-enriched air takes place. Therefore, even if the mixing and diffusion of the gas fuel and oxygen-enriched air is inhibited by solid particles, the oxygen concentration in the air is relatively high, so the gas fuel will burn well, and the combustion reaction will occur within the fluidized bed 12. can be completed.
したがって、未燃焼ガスの燃焼が流動層１２以後の系内
で生じることはなく、また爆発の危険性もない。さらに
、流動層１２内で燃焼反応が完結するので、流動層１２
内に浸漬された被処理物２４を効率良く加熱することが
できる。Therefore, combustion of unburned gas does not occur in the system after the fluidized bed 12, and there is no danger of explosion. Furthermore, since the combustion reaction is completed within the fluidized bed 12, the fluidized bed 12
The object to be processed 24 immersed therein can be efficiently heated.
第４図は本発明の他の実施例の系統図であり、第３゛図
の実施例に対応する部分には同一の諺照符を付す。この
実施例で１マ、流動Ｎｌｌ１２内の下部に、燃料吹込み
管１３とともに、燃焼用窓、気吹込み管２５が設けられ
、酸素富化空気供給手段２２から酸素富化空気が送風＄
２６を備える管路２７を介して供給される。この実施例
によっても第３図の実施例と同様の効果を奏することが
できる。FIG. 4 is a system diagram of another embodiment of the present invention, and parts corresponding to the embodiment of FIG. 3 are given the same reference symbols. In this embodiment, a combustion window and an air blowing pipe 25 are provided together with the fuel blowing pipe 13 at the lower part of the flow nozzle 12, and oxygen enriched air is blown from the oxygen enriched air supply means 22.
It is supplied via line 27 with 26. This embodiment also provides the same effects as the embodiment shown in FIG.
本発明のさらに他の実施例として、第５図で示すように
、酸素富化空気供給手段２２から送風機１８に：よって
供給される酸素富化空気と、矢符２９で示すように供給
されるガス燃料とを混合器３０で混合した後、流動層１
２内の吹込み管３１に供給するようにしてもよい。In yet another embodiment of the invention, as shown in FIG. After mixing with the gas fuel in the mixer 30, the fluidized bed 1
It may also be supplied to the blowing pipe 31 in 2.
上述のことく本発明によれば、酸素富化された空気を流
動層に供給するようにしたので、流動層内で燃焼反応を
完結することができ、未燃焼ガスの流動層以降の系内に
おける燃焼や爆発を防止量ることができる。As described above, according to the present invention, since oxygen-enriched air is supplied to the fluidized bed, the combustion reaction can be completed within the fluidized bed, and unburnt gas is removed from the system after the fluidized bed. It can prevent combustion and explosion.
第１図は従来技術を示す系統図、第２図は先行技術を示
す系統図、第３図は本発明の一実施例の糸ＩＩｋ図、第
４図および第５図は本発明の他の実施例をそれぞれ示す
系統図である。
１２・・・流動層、２２・・・酸素富化空気１供給手段
、２３・・・酸素選択透過膜、２４・・・被処理竺代理
人 、弁理士 西教圭一部FIG. 1 is a system diagram showing the prior art, FIG. 2 is a system diagram showing the prior art, FIG. 3 is a thread IIk diagram of one embodiment of the present invention, and FIGS. 4 and 5 are other diagrams of the present invention. It is a system diagram showing each example. 12... Fluidized bed, 22... Oxygen-enriched air 1 supply means, 23... Oxygen selective permeation membrane, 24... Agent to be treated, patent attorney Kei Nishi, part
Claims (1)
層内の被処理物を加熱処理するようにした流動層式熱処
理炉において、酸素選択透過膜を有し酸素富化された空
気を前記流動層に供給するための酸素富化空気供給手段
を備えることを特徴とする流動層式熱処理炉。In a fluidized bed heat treatment furnace, fuel and air are supplied into a fluidized bed for combustion, and the material to be treated in the fluidized bed is heated. A fluidized bed heat treatment furnace comprising oxygen enriched air supply means for supplying the fluidized bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56157707A JPS5860107A (en) | 1981-10-03 | 1981-10-03 | Heat treating furnace of fluidized bed type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56157707A JPS5860107A (en) | 1981-10-03 | 1981-10-03 | Heat treating furnace of fluidized bed type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5860107A true JPS5860107A (en) | 1983-04-09 |
| JPS64605B2 JPS64605B2 (en) | 1989-01-09 |
Family
ID=15655609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56157707A Granted JPS5860107A (en) | 1981-10-03 | 1981-10-03 | Heat treating furnace of fluidized bed type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5860107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2404111A1 (en) * | 2009-03-06 | 2012-01-11 | Metso Power Oy | Method for reducing nitrogen oxide emissions in oxyfuel combustion |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524599A (en) * | 1978-08-08 | 1980-02-21 | Coal Industry Patents Ltd | Heat treatment method and its device |
-
1981
- 1981-10-03 JP JP56157707A patent/JPS5860107A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524599A (en) * | 1978-08-08 | 1980-02-21 | Coal Industry Patents Ltd | Heat treatment method and its device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2404111A1 (en) * | 2009-03-06 | 2012-01-11 | Metso Power Oy | Method for reducing nitrogen oxide emissions in oxyfuel combustion |
| EP2404111A4 (en) * | 2009-03-06 | 2014-11-26 | Valmet Power Oy | Method for reducing nitrogen oxide emissions in oxyfuel combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS64605B2 (en) | 1989-01-09 |
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