JP4936561B2 - Combustion burner using fuel oil as fuel - Google Patents
Combustion burner using fuel oil as fuel Download PDFInfo
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- JP4936561B2 JP4936561B2 JP2008064959A JP2008064959A JP4936561B2 JP 4936561 B2 JP4936561 B2 JP 4936561B2 JP 2008064959 A JP2008064959 A JP 2008064959A JP 2008064959 A JP2008064959 A JP 2008064959A JP 4936561 B2 JP4936561 B2 JP 4936561B2
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Description
本発明はエンジンオイル等の潤滑油が使用済みになった廃油を燃料として用いることができるボイラー用等の燃焼バーナー装置に関する。 The present invention relates to a combustion burner device for boilers and the like that can use, as fuel, waste oil in which lubricating oil such as engine oil has been used.
エンジンオイルや機械の作動油等に用いられている潤滑油は一般に粘度が高く、これまでは、使用済み後は廃油として処分されていた。
廃油を廃棄物として処分するには費用がかかるだけでなく、環境負荷物質になってしまう問題があった。
従って、廃油を燃料として用いることができれば、産業廃棄物ではなく、有価物質として大きな付加価値が生まれることになるが、廃油は先に説明したとおり、粘度が高く、発火点、引火点も高いので灯油や重油のように一般的な燃料にすることはできなかった。
Lubricating oils used for engine oils and machine hydraulic oils generally have a high viscosity, and so far, they have been disposed of as waste oil after use.
Disposing of waste oil as waste not only costs money, but also has the problem of becoming an environmentally hazardous substance.
Therefore, if waste oil can be used as a fuel, it will generate great added value as a valuable material, not industrial waste. However, as described above, waste oil has high viscosity, high ignition point, and high flash point. It could not be used as a common fuel like kerosene or heavy oil.
特開２０００−４６３１３号公報に、廃油を燃焼させるための廃油燃焼装置を開示するが、廃棄物としての廃油を燃焼処理するものであり、複雑な装置となっている。 Japanese Patent Application Laid-Open No. 2000-46313 discloses a waste oil combustion apparatus for combusting waste oil. However, the waste oil as a waste is combusted and is a complicated apparatus.
本発明は、廃油を燃料として有効活用でき、従来の重油ボイラーに簡単に組み込むことも可能な燃焼バーナー装置の提供を目的とする。 An object of the present invention is to provide a combustion burner device that can effectively use waste oil as fuel and can be easily incorporated into a conventional heavy oil boiler.
本発明は、廃油を燃料とするボイラー用の燃焼バーナーであって、ボイラーの燃焼バーナーは、高圧燃料噴射ノズルと、噴射した燃料の燃焼室と、噴射ノズルに供給する廃油燃料の予備加熱手段とを備えていることを特徴とする。
予備加熱手段は、燃焼室の周囲にコイル状の配管を設け、当該のコイル状配管に廃油燃料を通すことで燃焼熱により予備加熱するものであるとよい。
The present invention is a combustion burner for a boiler using waste oil as a fuel, and the combustion burner of the boiler includes a high-pressure fuel injection nozzle, a combustion chamber for the injected fuel, and a preheating means for waste oil fuel supplied to the injection nozzle. It is characterized by having.
The preheating means is preferably provided with a coiled pipe around the combustion chamber and preheated with combustion heat by passing waste oil fuel through the coiled pipe.
エンジンオイル等の廃油は粘度が高いために圧力をかけて燃料噴射するのがよく、ボイラーの大きさによるが少なくとも５０ｋｇｆ／ｃｍ２以上の高圧がよく、理想的には１００ｋｇｆ／ｃｍ２以上がよい。
また、廃油は発火点が約１８０℃以上もあり、重油が約１０℃であると比較するといかに燃えにくいかが分かる。
そこで本発明は、廃油を燃料として噴射ノズルに供給する前に予備加熱することにしたものである。
ここで廃油の発火点は約１８０℃なので、予備加熱温度は２００℃以上が好ましく、高温になり過ぎると危険であるので４００℃以下がよい。
通常は廃油の予備加熱温度を約３００℃程度にするとよい。
また、助燃ガスとして供給するエアーも燃料と混合しやすいようにエアー吐出口に空気を撹拌するためのフィンを設けてもよい。
Waste oil such as engine oil has high viscosity, so it is better to inject fuel under pressure. Depending on the size of the boiler, high pressure of at least 50 kgf / cm 2 is good, ideally 100 kgf / cm 2 or more .
Further, the waste oil has an ignition point of about 180 ° C. or higher, and it can be seen how hard it is to burn compared with heavy oil having a temperature of about 10 ° C.
Therefore, in the present invention, the waste oil is preheated before being supplied to the injection nozzle as fuel.
Here, since the ignition point of the waste oil is about 180 ° C., the preheating temperature is preferably 200 ° C. or higher.
Usually, the preheating temperature of waste oil is preferably about 300 ° C.
Moreover, you may provide the fin for stirring air in an air discharge port so that the air supplied as auxiliary combustion gas may be easily mixed with fuel.
廃油の予備加熱手段としては電気ヒーター等の電気エネルギーを用いてもよいことはいうまでもないが、燃焼室の炎の輻射熱を利用するのが構造的に簡単で省エネルギー化にもなる。
そこでボイラーの稼働初期に燃焼室の輻射熱が充分に発生し、コイル状の配管部が２００℃以上になるまで重油を一時的に燃料として用いるとよい。
この場合には、重油と廃油との供給切り替え手段を設けるとよい。
It goes without saying that electric energy such as an electric heater may be used as the preheating means for the waste oil. However, it is structurally simple to use the radiant heat of the flame in the combustion chamber, which also saves energy.
Therefore, it is preferable to use heavy oil temporarily as fuel until the radiant heat of the combustion chamber is sufficiently generated in the initial stage of operation of the boiler and the coiled piping section reaches 200 ° C. or higher.
In this case, it is preferable to provide a supply switching means between heavy oil and waste oil.
本発明においては、発火点の高い廃油であっても燃料噴射前に予備加熱することで、非常に効率高く燃焼することが可能である。
従来は、廃油が産業廃棄物として処分されていたのと比較すると、本発明により、新たなエネルギー資源として活用でき、高温熱源としてボイラーの小型化にも寄与する。
In the present invention, even waste oil having a high ignition point can be burned very efficiently by preheating before fuel injection.
Conventionally, compared with the case where waste oil has been disposed of as industrial waste, the present invention can be utilized as a new energy resource, and contributes to downsizing of a boiler as a high-temperature heat source.
本発明に係る燃焼バ−ナー装置の例を以下図面に基づいて説明する。
本発明に係る燃焼バーナー装置は、熱源を必要とする装置に組み込むことで各種用途への展開が可能であるが、ボイラー用の燃焼バーナー装置に用いると効果的である。
図１に本発明に係るシステム構成例を示す。
ガソリンスタンドや修理工場等から回収した使用済みエンジンオイル等の廃油（潤滑油，作動油等）を廃油タンク４０に貯留し、ストレーナー５０にて固形異物を除去した後に高圧ポンプ２０にて約１００ｋｇｆ／ｃｍ２の高圧にて燃料配管１５を経由して燃焼バーナー１０に供給される。
なお、重油タンク３０に稼働立上げ燃料として重油を貯留しておき、電磁バルブＶ１，Ｖ２にて切り替えが可能になっている。
高圧ポンプ、燃焼ファン（エアーブロー装置）をインバーター制御により、予熱時の重油は低速回転で送り、廃油に切り替えた時に高速、高圧にする。
An example of a combustion burner device according to the present invention will be described below with reference to the drawings.
The combustion burner apparatus according to the present invention can be developed for various uses by being incorporated in an apparatus that requires a heat source, but is effective when used in a combustion burner apparatus for a boiler.
FIG. 1 shows a system configuration example according to the present invention.
Waste oil (lubricating oil, hydraulic oil, etc.) such as used engine oil collected from a gas station or a repair shop is stored in a waste oil tank 40, solid foreign matter is removed by a strainer 50, and then about 100kgf / It is supplied to the combustion burner 10 via the
In addition, heavy oil is stored in the heavy oil tank 30 as operation start-up fuel, and switching is possible with the electromagnetic valves V1 and V2.
High pressure pumps and combustion fans (air blow devices) are controlled by inverters so that heavy oil during preheating is sent at low speed, and when switched to waste oil, high speed and high pressure are achieved.
燃焼バーナー１０の拡大図を図２に示し、燃焼室１６付近の断面模式図を図３に示す。
燃焼室１６は、前方が開口した略円筒状になっていて、後方の中心部には燃料を高圧噴射する噴射ノズル１１を配設してある。
噴射ノズルの詳細構造は図示省略したが、液体燃料型ボイラーに用いられるものと同じ構造のものが用いられるが、高温に耐えられるタイプのものがよい。
本発明の特徴は、噴射ノズル１１に供給する廃油の燃料配管系にある。
燃料配管を燃焼室１６の周囲に同心円状にしたコイル状配管にし、燃焼炎の輻射熱による予備加熱部１２を設けてある。
予備加熱部は２００〜４００℃の範囲、理想的には約３００℃前後になるように断熱材１８にて覆い、ケーシング１７にて保温されている。
燃焼により４００℃を超える高温になるとリングブロー装置１４を作動し、エアー噴射配管１４ｂからエアーを吹き付け冷却制御する。
このリングブロー装置１４は、バーナー着火時に使用するパイロットバーナー用エアーとしても使用し、その場合の配管を１４ａとして示す。
また、噴射ノズル１１の後方には、エアー誘導管１３ａを有し、エアーブロー装置１３が配管接続されている。
この場合にエアーが燃料と撹拌混合するのを促進するために図４に示した放射状で羽根の先端を傾斜させた整流板１９を取り付けてある。
バーナーの燃焼を止めるときには廃油のバルブＶ１を閉じ、重油バルブＶ２を開いてコイル状配管の中味を重油にし、さらに、リターンポンプ２１を作動し、コイル配管中の重油を抜き取る。
これにより初期状態に戻る。
An enlarged view of the combustion burner 10 is shown in FIG. 2, and a schematic cross-sectional view in the vicinity of the
The
Although the detailed structure of the injection nozzle is not shown in the drawing, the same structure as that used for the liquid fuel boiler is used, but a type that can withstand high temperatures is preferable.
A feature of the present invention resides in a fuel piping system for waste oil supplied to the
The fuel pipe is formed into a coiled pipe concentrically around the
The preheating part is covered with a heat insulating material 18 so as to be in the range of 200 to 400 ° C., ideally around 300 ° C., and is kept warm in the
When the temperature exceeds 400 ° C. due to combustion, the
This
In addition, an
In this case, in order to promote the agitation and mixing of the air with the fuel, a rectifying
When stopping combustion of the burner, the waste oil valve V1 is closed, the heavy oil valve V2 is opened to make the contents of the coiled pipe heavy oil, and the return pump 21 is operated to remove the heavy oil in the coil pipe.
This returns to the initial state.
次に廃油の燃焼実験結果について説明する。
重油タンク３０の電磁バルブＶ２を開き、燃焼バーナーを稼働させ、予備加熱部が約２００℃になるようにした後に電磁バルブＶ２を閉じ、電磁バルブＶ１を開き、廃油供給に切り替えた。
実験に用いた廃油の分析結果を図５に示す。
この廃油を燃料として燃焼させ、ボイラーの煙道から燃焼ガスを引き込み、排ガスを分析した結果を図６〜図９に示す。
これにより、本発明に係る廃油を用いた燃焼バーナー装置はボイラーの熱源として充分に適用できることが明らかになった。
Next, the results of the waste oil combustion experiment will be described.
After opening the electromagnetic valve V2 of the heavy oil tank 30 and operating the combustion burner so that the preheating portion was about 200 ° C., the electromagnetic valve V2 was closed and the electromagnetic valve V1 was opened to switch to waste oil supply.
The analysis result of the waste oil used in the experiment is shown in FIG.
The waste oil is burned as fuel, the combustion gas is drawn from the flue of the boiler, and the results of analyzing the exhaust gas are shown in FIGS.
Thereby, it became clear that the combustion burner device using the waste oil according to the present invention can be sufficiently applied as a heat source of a boiler.
１０ 燃焼バーナー
１１ ノズル
１２ 予備加熱部
１３ エアーブロー装置
１４ リングブロー装置
１５ 燃料配管
１６ 燃焼室
１７ ケーシング
１８ 断熱材
２０ 高圧ポンプ
２１ リターンポンプ
３０ 重油タンク
４０ 廃油タンク
５０ ストレーナー
DESCRIPTION OF SYMBOLS 10
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008064959A JP4936561B2 (en) | 2008-03-13 | 2008-03-13 | Combustion burner using fuel oil as fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008064959A JP4936561B2 (en) | 2008-03-13 | 2008-03-13 | Combustion burner using fuel oil as fuel |
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| Publication Number | Publication Date |
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| JP2009222262A JP2009222262A (en) | 2009-10-01 |
| JP4936561B2 true JP4936561B2 (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2008064959A Expired - Fee Related JP4936561B2 (en) | 2008-03-13 | 2008-03-13 | Combustion burner using fuel oil as fuel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114110624A (en) * | 2021-11-29 | 2022-03-01 | 济南市琦泉热电有限责任公司 | Waste oil and waste liquid incineration boiler for flue gas self-heating treatment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518539A (en) * | 1974-07-10 | 1976-01-23 | Matsushita Electric Works Ltd | RODENSHADANKYOZOFUKUKINO DENGEN KAIRO |
| JPS5384236A (en) * | 1974-08-12 | 1978-07-25 | Takumi Sogabe | Internal combustion type water cooled burners |
| JP2002022135A (en) * | 2000-07-10 | 2002-01-23 | Mitsubishi Heavy Ind Ltd | Method and equipment for waste-oil combustion |
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