JPH01179812A - Venturi-type burner for combustion equipment - Google Patents
Venturi-type burner for combustion equipmentInfo
- Publication number
- JPH01179812A JPH01179812A JP63000774A JP77488A JPH01179812A JP H01179812 A JPH01179812 A JP H01179812A JP 63000774 A JP63000774 A JP 63000774A JP 77488 A JP77488 A JP 77488A JP H01179812 A JPH01179812 A JP H01179812A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel
- burner
- secondary air
- venturi
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 14
- 239000000446 fuel Substances 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000001354 calcination Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/001—Alkaline earth metal or Mg-compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、セメント焼成設備、多目的の焼成炉、仮焼炉
、熱風炉、又は廃棄物焼却炉等の燃焼装置に適用される
ベンチュリー式バーナに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a venturi burner applied to combustion equipment such as cement firing equipment, multipurpose kilns, calciners, hot blast furnaces, and waste incinerators. Regarding.
従来のバーナでは１通常は１次空気及び燃料がバーナガ
ンから噴射され、２次空気はバーナガンの周囲から供給
され完全燃焼を行うように工夫されている。In conventional burners, primary air and fuel are normally injected from a burner gun, and secondary air is supplied from around the burner gun to achieve complete combustion.
セメント焼成設備に於ける流動層式仮焼装置等に於て、
従来の上記バーナを採用ｔ７てガス燃料と使用する場合
には、燃料と燃焼用二次空気との混合が悪く、−次空気
を多く必要としている。また、−次空気としては、通常
常温の大気が使用されるが、省エネの点から常温の大気
は不利である。よって二次空気の１部又は間接的に昇温
した空気を一次空気として使用することも考えられるが
、このためには多大の設備と動力を必要とすることから
実用化には困難があった。In fluidized bed calcining equipment in cement firing equipment, etc.
When the above-mentioned conventional burner is employed and used with gas fuel, the fuel and secondary air for combustion are poorly mixed, and a large amount of secondary air is required. Furthermore, normal temperature air is normally used as secondary air, but normal temperature air is disadvantageous from the point of view of energy saving. Therefore, it is possible to use part of the secondary air or indirectly heated air as the primary air, but this requires a large amount of equipment and power, making it difficult to put it into practical use. .
本発明は、このような問題点を解決しようとするもので
ある。The present invention attempts to solve these problems.
本発明は、燃焼装置用ベンチュリー式バーナにおいて、
二次空気供給路内に配置され中間部が両端部より絞られ
た筒状のベンチュリー管と、同ばンチュリー管内の絞ら
れた中央部に配置された燃焼供給用バーナガンと、前記
ペンチーリー管内に空気の案内羽根とを設けた。The present invention provides a venturi burner for a combustion device,
A cylindrical Venturi tube is placed in the secondary air supply path and the middle part is narrowed from both ends, a burner gun for combustion supply is placed in the narrowed center part of the venturi tube, and air is supplied to the venturi tube. A guide vane was provided.
本発明では、ベンチュリー管内を流れる空気は、絞られ
た中間部で増速さね、燃料に加えられる圧力と空気流の
増速による静圧の減少とによってバーナガンから燃料が
噴出し、これが増速された空気と交差することによって
十分な混合が行われる。In the present invention, the air flowing inside the Venturi pipe increases in speed at the constricted middle part, and fuel is ejected from the burner gun due to the pressure applied to the fuel and the decrease in static pressure due to the increased speed of the air flow, which increases the speed. Sufficient mixing is achieved by intersecting with the air.
また案内羽根によってペンチーリー管内を流れる空気流
は適宜に制御され、燃焼装置の運転状況に応じて直進流
にも旋回流にもすることができる。Furthermore, the airflow flowing through the Pencilly tube is appropriately controlled by the guide vanes, and can be made into a straight flow or a swirling flow depending on the operating conditions of the combustion device.
更に、上記のように燃料と混合される空気は二次空気供
給路内を流れる高温の二次空気の１部であるために、熱
損失もなく高温の二次空気が有効に利用されると共に、
−次空気は不要となり又はその量が低減される。Furthermore, as mentioned above, since the air mixed with the fuel is part of the high temperature secondary air flowing in the secondary air supply path, the high temperature secondary air can be effectively utilized without heat loss. ,
- secondary air is not required or its amount is reduced;
本発明の一実施例を第１図ないし第４図によって説明す
る。図面中６は本実施例に係るベンチュリー式バーナで
あって、二次空気の供給路内、例えば、第３図に示すよ
うに二次空気管８内にサポ−）７ＶＣよって配置され、
或は第４図に示すように流動層５を備えた流動層式仮焼
炉９の二次空気管８内に配置される。An embodiment of the present invention will be described with reference to FIGS. 1 to 4. Reference numeral 6 in the drawings indicates a venturi type burner according to the present embodiment, which is disposed within the secondary air supply path, for example, within the secondary air pipe 8 as shown in FIG.
Alternatively, as shown in FIG. 4, it is placed in a secondary air pipe 8 of a fluidized bed calciner 9 equipped with a fluidized bed 5.
本実施例に係るバーナ６は、第１図及び第２図に示すよ
うに、バーナガン１、ペンチーリー管２、案内羽根３、
燃料供給管４から構成されている。As shown in FIGS. 1 and 2, the burner 6 according to this embodiment includes a burner gun 1, a Pencilly tube 2, a guide vane 3,
It is composed of a fuel supply pipe 4.
ベンチュリー管２は第１図中矢印で示される二次空気の
流れの方向にその軸が配置さね、その中間部２ａが絞ら
れた断面円形の筒状の形状を有していて、燃料供給管４
が接続されたバーナガン１ばその軸に沿って配置され先
端の燃料噴出口１ａは同中間部２ａにおいて二次空気の
下流側に向って開口している。また、はンチュリー管２
の中間部２ａには、同ベンチュリー管２の内周とバーナ
ガン１の外周の間に案内羽根３が設けられている。The Venturi tube 2 has a cylindrical shape with a circular cross section, with its axis disposed in the direction of the secondary air flow indicated by the arrow in FIG. tube 4
is arranged along the axis of the burner gun 1 to which the burner gun 1 is connected, and the fuel injection port 1a at the tip thereof opens toward the downstream side of the secondary air in the intermediate portion 2a. Also, the Hunturi tube 2
A guide vane 3 is provided between the inner periphery of the venturi tube 2 and the outer periphery of the burner gun 1 at the intermediate portion 2a of the venturi tube 2.
本実施例においては、ペンチーリー管２に入った燃焼用
二次空気は、それが持つ慣性エネルギーにより強制的に
圧縮されその風速はベンチ−ＩＪ−管２の絞られた中間
部２ａで最大となる。そのベンチュリー２の中間部２ａ
にバーナガン１の噴出口１ａが設置されている。このた
めに、バーナガン１に供給される燃料に加えられた圧力
と同バーナガン１の周りを流れる増速さねた空気流の静
圧の減少とによって、バーナガン噴出口１ａから燃料が
噴出されこれが内周の増速された空気と交差して両者が
十分に混合される。またベンチュリー管２の寸法は燃焼
に必要な風速が得られるような口径となっている。In this embodiment, the combustion secondary air that has entered the Pencilly tube 2 is forcibly compressed by its own inertial energy, and its wind speed reaches its maximum at the narrowed middle section 2a of the bench-IJ tube 2. . Middle part 2a of the venturi 2
The spout 1a of the burner gun 1 is installed at . For this reason, due to the pressure applied to the fuel supplied to the burner gun 1 and the decrease in the static pressure of the accelerated air flow flowing around the burner gun 1, fuel is ejected from the burner gun spout 1a and is internally It intersects with the surrounding accelerated air and the two are thoroughly mixed. Further, the dimensions of the venturi tube 2 are such that a wind velocity necessary for combustion can be obtained.
このようにして燃料は空気と十分に混合して効率のよい
燃焼が実現される。In this way, the fuel is thoroughly mixed with air and efficient combustion is achieved.
また、ベンチュリー管２内をＩ＃ｈる空気は、ペンチー
リー管２外を流れる二次空気と同質の高温の空気である
ため熱損失もなく高温の二次空気を有効に利用すること
ができる。Furthermore, since the air I#h flowing through the Venturi tube 2 is high-temperature air that is the same as the secondary air flowing outside the Venturi tube 2, the high-temperature secondary air can be effectively used without heat loss.
更に本実施例においては、ベンチュＩＪ−Ｗ２とバーナ
ガン１との間に案内羽根３が設げらハており、同案内羽
根３を選択することによってベンチュリー管２内を流れ
る空気流を直進流にも旋回流にもすることができ、バー
ナの運転状況に適した空気流を得ることができる。Furthermore, in this embodiment, a guide vane 3 is provided between the venturi IJ-W 2 and the burner gun 1, and by selecting the guide vane 3, the air flow flowing inside the venturi pipe 2 is made into a straight flow. It is also possible to create a swirling flow, making it possible to obtain an airflow suitable for the operating conditions of the burner.
なお、同案内羽根３の取付角度を可変にしておき、これ
を外部から制御できるようにしておけば。In addition, if the mounting angle of the guide vane 3 is made variable and this can be controlled from the outside.
運転中に空気流を直進流或は旋回流に適宜変更すること
が可能である。During operation, it is possible to change the air flow to a straight flow or a swirling flow as appropriate.
また、本実施例におけるペンチエリ−管２は、二次空気
の流れ方向から見て吸引されているか吹込まれているか
によって形状が考慮する必要がある。少なくとも吸引さ
れる場合には、ベンチュリーの入口先端の内径より出口
先端の外径が太きいか等しくなるように設計する必要が
ある。Further, the shape of the Pentieri tube 2 in this embodiment needs to be considered depending on whether the secondary air is being sucked or blown in when viewed from the flow direction of the secondary air. At least in the case of suction, it is necessary to design the venturi so that the outer diameter of the outlet tip is greater than or equal to the inner diameter of the inlet tip.
以上説明したように、本実施例は、燃料と空気とを十分
に混合した上で必要な量の空気の存在の下に燃焼を行う
ことができ、かつ、バーナの一次空気を不要にすること
ができ、しかも高温の二次空気の１部を燃料と混合させ
有効利用することによって熱損失を減少させることがで
きる。As explained above, in this embodiment, fuel and air can be thoroughly mixed and combustion can be performed in the presence of the necessary amount of air, and primary air in the burner can be eliminated. Moreover, heat loss can be reduced by effectively utilizing a portion of the high temperature secondary air by mixing it with fuel.
なお、上記実施例では、二次空気の１部をペンチーリー
管内に導いて燃料と混合させ一次空気を不要としている
が、−次空気を燃料と共にバーナガンから噴出させる等
、−次空気を用いるようにすることもでき、この場合は
、−次空気の量を低減させ、かつ熱損失を減少させるこ
とができる。In the above embodiment, a part of the secondary air is introduced into the Pencheley tube and mixed with the fuel, thereby eliminating the need for primary air. In this case, the amount of secondary air can be reduced and the heat loss can be reduced.
本発明は次の効果を奏することができる。 The present invention can have the following effects.
（１）高温の二次空気の１部を利用して燃料と混合して
燃焼させるので、熱損失が減少する。(1) Since a portion of the high temperature secondary air is used to mix with the fuel and burn it, heat loss is reduced.
（２）ベンチュリー管の絞った部分において増速された
空気流中に燃料を噴出させることによって、燃料と空気
との混合効果を上げ燃焼効果が増大する。(2) By injecting fuel into the accelerated air flow in the constricted portion of the venturi tube, the mixing effect of fuel and air is increased and the combustion effect is increased.
（３）−次空気を不要とし、もしくはその量を低減させ
ることができる。(3) Secondary air can be eliminated or its amount can be reduced.
（４）案内羽根によってベンチュリー管内を流れ燃料と
混合される空気の流れを旋回流又は直進流等所望のもの
にすることができる。(4) The guide vanes can make the flow of air flowing through the venturi pipe and mixed with the fuel into a desired flow, such as a swirling flow or a straight flow.
第１図は本発明の一実施例の縦断面図、第２図は同側面
図、第３図は上記実施例が設けられた二次空気管の縦断
面図、第４図は上記実施例が設けられた流動層式仮焼炉
の縦断面図である。
１・・・バーナガン １ａ・・・燃料噴出口２・・
・ベンチュリー管
２ａ・・・ベンチュリー管中間部Fig. 1 is a longitudinal sectional view of one embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a longitudinal sectional view of a secondary air pipe provided with the above embodiment, and Fig. 4 is a longitudinal sectional view of the above embodiment. FIG. 2 is a longitudinal sectional view of a fluidized bed calcining furnace provided with a 1... Burner gun 1a... Fuel spout 2...
・Venturi tube 2a...Middle part of Venturi tube
Claims (1)
た筒状のベンチュリー管と、同ベンチュリー管内の絞ら
れた中間部に配置された燃料供給用バーナガンと、前記
ベンチュリー管内に空気の案内羽根とを備えてなること
を特徴とする燃焼装置用ベンチュリー式バーナ。A cylindrical venturi pipe arranged in the secondary air supply path and whose middle part is narrowed from both ends; a fuel supply burner gun arranged in the narrowed middle part of the venturi pipe; A venturi type burner for a combustion device, characterized by comprising a guide vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63000774A JPH01179812A (en) | 1988-01-07 | 1988-01-07 | Venturi-type burner for combustion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63000774A JPH01179812A (en) | 1988-01-07 | 1988-01-07 | Venturi-type burner for combustion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01179812A true JPH01179812A (en) | 1989-07-17 |
Family
ID=11483046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63000774A Pending JPH01179812A (en) | 1988-01-07 | 1988-01-07 | Venturi-type burner for combustion equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01179812A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240547A (en) * | 2019-07-16 | 2021-01-19 | 宁波方太厨具有限公司 | Kitchen range ejector |
-
1988
- 1988-01-07 JP JP63000774A patent/JPH01179812A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240547A (en) * | 2019-07-16 | 2021-01-19 | 宁波方太厨具有限公司 | Kitchen range ejector |
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