JPH0129395Y2 - - Google Patents
Info
- Publication number
- JPH0129395Y2 JPH0129395Y2 JP6909283U JP6909283U JPH0129395Y2 JP H0129395 Y2 JPH0129395 Y2 JP H0129395Y2 JP 6909283 U JP6909283 U JP 6909283U JP 6909283 U JP6909283 U JP 6909283U JP H0129395 Y2 JPH0129395 Y2 JP H0129395Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- burner
- seed
- pulverized coal
- kerosene
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 21
- 239000000446 fuel Substances 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000010344 co-firing Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 description 44
- 239000003350 kerosene Substances 0.000 description 33
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000007800 oxidant agent Substances 0.000 description 9
- 238000010899 nucleation Methods 0.000 description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000011591 potassium Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は、MHD発電プラント用燃焼器、ボイ
ラ等各種加熱炉及びガスタービン燃焼器の混焼用
バーナ、特に灯油、微粉炭混焼用バーナに関する
ものである。[Detailed Description of the Invention] The present invention relates to a burner for co-firing in various heating furnaces such as combustors and boilers for MHD power generation plants, and gas turbine combustors, and particularly to a burner for co-firing kerosene and pulverized coal.
従来、MHD発電においては、液体燃料を用い
て高温燃焼器の開発が進められてきた。しかし、
ここ数年来、省石油の社会情勢から石炭燃焼によ
るMHD発電の実用性がクローズアツプされてき
ている。従つてこれまで実用化を進めてきた灯油
燃料による燃焼器の改良を迫られ、灯油、微粉炭
混焼用バーナの開発が必要となつてきた。 Conventionally, in MHD power generation, high-temperature combustors have been developed using liquid fuel. but,
Over the past few years, the practicality of MHD power generation using coal combustion has been attracting attention due to the social situation of saving oil. Therefore, it has become necessary to improve the kerosene-fueled combustor that has been put into practical use, and it has become necessary to develop a burner for co-firing kerosene and pulverized coal.
更に、MHD発電は周知のごとく、高温（3000
〓）の燃焼ガスプラズマを強力な磁界中に置かれ
た発電チヤンネルの中に磁界と直角の方向に高速
で通過させ、フアラデー効果によつて、磁界とプ
ラズマの流れの両者に直角の方向の起電力を得る
直接発電方式で、化石燃料を燃焼させ、高温の燃
焼ガスを発生させる燃焼器としては、器壁からの
熱損失の低い高負荷燃焼器を提供しなければなら
ない。 Furthermore, as is well known, MHD power generation requires high temperatures (3000
The combustion gas plasma of As a combustor that generates high-temperature combustion gas by burning fossil fuels in a direct power generation system that obtains electricity, it is necessary to provide a high-load combustor with low heat loss from the vessel wall.
このために、本考案者等は第１図に示すような
燃料噴霧体と助燃剤（高温空気または酸素）の混
合性能の秀れたサイクロン式高負荷燃焼器の実用
化を進めて来た。 To this end, the inventors of the present invention have been working to put into practical use a cyclone-type high-load combustor with excellent mixing performance of a fuel spray body and a combustion improver (high-temperature air or oxygen) as shown in FIG.
本考案は上記のような要請に基づいてなされた
混焼用バーナであつて、その特徴とするところ
は、バーナ端面の軸心部にデイフユーザ形の微粉
体噴出口を設け、同外周上にその円周が異なり、
噴射角度の異なるシード剤（カリウム水溶液）を
噴霧するシード混合ノズルと液体燃料（灯油）を
噴霧する液体燃料混合ノズルを複数個リング状に
配設し、更に粉体噴出口の外周上及びシード混合
ノズルの外周上にそれぞれスイープノズルをリン
グ状に複数個配設すると共に、前記各ノズルに連
通し、液体燃料及びシード剤水溶液を噴霧する圧
縮空気溜りをバーナ内部に設けた混焼用バーナに
ある。 The present invention is a co-combustion burner developed based on the above-mentioned requirements, and its features include a diffuser-shaped fine powder spout provided at the axial center of the end face of the burner, and a circular spout formed on the outer periphery of the burner. The circumference is different,
A plurality of seed mixing nozzles that spray a seeding agent (potassium aqueous solution) and liquid fuel mixing nozzles that spray liquid fuel (kerosene) are arranged in a ring shape with different injection angles, and the seed mixing nozzle is arranged on the outer periphery of the powder spout and the seed mixing nozzle. The co-firing burner is provided with a plurality of ring-shaped sweep nozzles arranged on the outer periphery of the nozzle, and a compressed air reservoir inside the burner that communicates with each nozzle and sprays liquid fuel and an aqueous seeding solution.
即ち、バーナ軸心部に微粉炭を噴出するジエツ
ト噴流を形成させ、その外周部に灯油燃料の噴霧
ジエツトを放射状に形成し、微粉炭ジエツト噴流
と灯油燃料の放射状ジエツト噴霧流との中間に、
シード剤（カリウム水溶液）のジエツト噴霧流を
放射状に噴射すると共に、微粉炭噴口およびシー
ド混合ノズルにスイープ空気流を付与するように
したものである。 That is, a jet jet for ejecting pulverized coal is formed at the burner shaft center, a kerosene fuel spray jet is formed radially around the outer periphery of the jet jet, and between the pulverized coal jet jet and the radial jet spray jet of kerosene fuel,
A jet spray stream of a seeding agent (aqueous potassium solution) is injected radially, and a sweep air stream is applied to a pulverized coal nozzle and a seed mixing nozzle.
以下、本考案の実施例を図面とともに説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第１図に示すように、サイクロン形燃焼器は、
燃焼器本体０１とこれに貫挿されたバーナ本体０
４とからなり、燃焼器本体０１の胴上流部に主燃
酸化剤の旋回噴口０２が周設され、また燃焼器本
体０１の肩部にパイロツトバーナ０３が設けられ
ており、主燃酸化剤の旋回噴口０２は主燃酸化剤
の供給路０５に連通している。燃焼器本体０１の
胴上流端内周に内接して予燃酸化剤の旋回噴口で
あるスワラー１１が配設され、予燃配化剤の供給
路０６に連通している。 As shown in Figure 1, the cyclone type combustor is
Combustor body 01 and burner body 0 inserted through it
4, a swirling nozzle 02 for the main fuel oxidizer is provided around the upper part of the trunk of the combustor main body 01, and a pilot burner 03 is provided on the shoulder of the combustor main body 01, and the main fuel oxidizer is The swirl nozzle 02 communicates with a main combustion oxidizer supply path 05. A swirler 11, which is a swirling nozzle for a pre-combustion oxidizing agent, is provided inscribed on the inner periphery of the upstream end of the combustor body 01 and communicates with a supply path 06 for the pre-combustion distribution agent.
一方、燃焼器頭部である予燃酸化剤の供給路０
６内側にバーナ本体０４が貫挿され、その軸心部
の外周側から順に灯油燃料の供給路０７、シード
剤供給路０８、噴霧空気供給路０９、および微粉
炭供給路１０が設けられ、これらの供給口に通じ
る噴口がそれぞれ必要数リング状に配設されてい
る。 On the other hand, the pre-combustion oxidizer supply path 0 which is the combustor head
A burner body 04 is inserted into the inside of the burner body 6, and a kerosene fuel supply passage 07, a seed agent supply passage 08, an atomizing air supply passage 09, and a pulverized coal supply passage 10 are provided in order from the outer peripheral side of the axial center of the burner body 04. The required number of nozzles communicating with the supply ports are arranged in a ring shape.
第２図ａ，ｂに示すように、サイクロン形燃焼
器に装着するバーナは、バーナ本体０４、バーナ
チツプ２２、バーナキヤツプ２３および微粉炭ノ
ズル本体２４から構成されている。バーナ本体０
４の軸心部に微粉炭ノズル本体２４を嵌挿し、バ
ーナ本体０４の一端にバーナチツプ２２が取付け
られ、バーナチツプ２２がバーナキヤツプ２３が
ねじで挿嵌されると共に、バーナ本体０４にもね
じで締付け固着している。 As shown in FIGS. 2a and 2b, the burner installed in the cyclone type combustor is composed of a burner body 04, a burner tip 22, a burner cap 23, and a pulverized coal nozzle body 24. Burner body 0
The pulverized coal nozzle body 24 is fitted into the axial center of the burner body 04, and the burner tip 22 is attached to one end of the burner body 04.The burner cap 23 is inserted into the burner tip 22 with a screw, and is also tightened with a screw. It's stuck.
微粉炭ノズル本体２４には、軸心に微粉炭供給
路１０を穿設し、これに微粉炭噴口２６を連通し
し貫通させている。 The pulverized coal nozzle body 24 has a pulverized coal supply path 10 formed in its axis, and a pulverized coal nozzle 26 communicates with and penetrates the pulverized coal supply path 10 .
微粉炭ノズル本体２４の外周面とバーナ本体０
４の内周面との間には噴霧空気供給路０９が環状
に形成され、前記供給路０９は、バーナ本体０４
の先端部と、バーナチツプ２２の内面側と微粉炭
ノズル本体２４とに囲まれた空間で形成された噴
霧空気溜り１２に連通して、これがバーナチツプ
２２に設けた噴霧空気ノズルと灯油混合ノズル１
５、シード混合ノズル１６に連通している。 The outer peripheral surface of the pulverized coal nozzle body 24 and the burner body 0
A spray air supply path 09 is formed in an annular shape between the burner body 04 and the inner peripheral surface of the burner body 04.
The tip of the burner tip 22 communicates with the atomizing air reservoir 12 formed in the space surrounded by the inner surface of the burner tip 22 and the pulverized coal nozzle body 24, and this communicates with the atomizing air nozzle provided on the burner tip 22 and the kerosene mixing nozzle 1.
5, communicates with the seed mixing nozzle 16.
バーナ本体０４には、軸心寄りにシード剤供給
路０８と、その外側に灯油燃料供給路０７が環状
に穿設され、シード剤供給路０８はバーナーチツ
プ２２の内側に設けられたシード分岐環１９に連
通し、更にこれがバーナチツプ２２に穿設された
シード噴口２１に連通し、更にこれがシード混合
ノズル１６に合流している。灯油燃料供給路０７
は同様にバーナチツプ２２の内側に設けられた灯
油分岐環１８に連通し、更にこれがバーナチツプ
２２に穿設された灯油噴口２２に連通し、更にこ
れが灯油混合ノズル１５に合流している。そして
バーナチツプ２２の端面では軸心部に微粉炭噴口
２６、同外周円周上にシード混合ノズル１６、そ
の外円周上に灯油混合ノズル１５がリング状に複
数個配設され、シード混合ノズル１６の噴射角度
θ1と、灯油混合ノズル１５の噴射角度θ2は異なる
角度で千鳥状に配列されている。 The burner body 04 is provided with a seed agent supply path 08 near the axis and a kerosene fuel supply path 07 formed in an annular manner on the outside thereof. 19, which in turn communicates with a seed nozzle 21 bored in the burner tip 22, which in turn merges into the seed mixing nozzle 16. Kerosene fuel supply path 07
Similarly, it communicates with a kerosene branch ring 18 provided inside the burner tip 22, which in turn communicates with a kerosene spout 22 bored in the burner tip 22, which in turn merges into a kerosene mixing nozzle 15. On the end face of the burner chip 22, a pulverized coal nozzle 26 is provided at the axial center, a seed mixing nozzle 16 is arranged on the outer circumference, and a plurality of kerosene mixing nozzles 15 are arranged in a ring shape on the outer circumference. The injection angle θ 1 of the kerosene mixing nozzle 15 and the injection angle θ 2 of the kerosene mixing nozzle 15 are arranged in a staggered manner at different angles.
更に、微粉炭ノズル本体２４とバーナチツプ２
２との先端の内接部には、噴霧空気溜り１２と連
通する溝形の微粉炭スイープノズル１７、バーナ
キヤツプ２３と接するノズルチツプ２２の外周部
には、噴霧空気溜り１２からスイープ空気供給路
１４と連通するシードスイープノズル２５をそれ
ぞれ必要数配設している。 Furthermore, a pulverized coal nozzle body 24 and a burner tip 2
2, a groove-shaped pulverized coal sweep nozzle 17 communicating with the atomizing air reservoir 12 is provided, and a sweep air supply path 14 from the atomizing air reservoir 12 is located on the outer periphery of the nozzle tip 22 in contact with the burner cap 23. A required number of seed sweep nozzles 25 communicating with each other are provided.
なお、前記した灯油通路の分岐環１８とシード
通路の分岐環１９が溝リング状に設けられ、ガス
ケツトリングで隔離し、それぞれの液溜りを形成
している。 The branch ring 18 of the kerosene passage and the branch ring 19 of the seed passage described above are provided in the shape of groove rings, separated by a gasket ring, and form respective liquid reservoirs.
本考案は、混焼用バーナを上記のように構成し
たので、第１図に示すごとく、燃焼器内に助燃剤
（高温空気または酸素）の強制渦を形成させ、燃
焼器内の気流中に灯油燃料の噴霧ジエツトＥを気
流の淀み領域Ｃへ噴射拡散させ、軸中心部には別
に備えられた石炭供給装置（図示せず）から供給
される不活性ガス（N2ガス）によつて流動化し
た微粉炭を搬送気流で微粉炭供給路１０へ導き微
粉炭噴口２６からジエツト噴流Ａを形成させ、強
制渦流の循環流域Ｂへ微粉炭を噴射拡散させる。
さらに微粉炭のジエツト噴流Ａと灯油噴霧体の噴
流ジエツトＥの中間領域には、燃焼ガスを電離さ
せるためのシード剤（カリウム水溶液）の噴霧ジ
エツトＤを噴射して燃焼器火炎の高温領域に包み
込みシード剤を蒸発気化させて燃焼ガス中に混合
させる。 In the present invention, since the co-combustion burner is configured as described above, a forced vortex of combustion improver (high temperature air or oxygen) is formed in the combustor, as shown in Fig. 1, and kerosene is added to the airflow in the combustor. The fuel spray jet E is injected and diffused into the stagnation region C of the airflow, and is fluidized by inert gas (N 2 gas) supplied from a coal supply device (not shown) separately provided at the center of the shaft. The pulverized coal is guided to the pulverized coal supply path 10 by a conveying air flow, a jet jet A is formed from the pulverized coal nozzle 26, and the pulverized coal is injected and diffused into the circulation region B of the forced vortex flow.
Furthermore, a spray jet D of a seeding agent (potassium aqueous solution) for ionizing the combustion gas is injected into the intermediate region between the jet jet A of pulverized coal and the jet jet E of the kerosene spray to envelop it in the high temperature region of the combustor flame. The seeding agent is evaporated and mixed into the combustion gas.
そして、上記バーナの作用について説明する
と、不活性ガスの気流によつて微粉炭供給路１０
に搬送される微粉炭の混合気流は、微粉炭噴口２
６から百数十ｍ／ｓの高速で噴出することによつ
て逆火を防止するので、先端デイフユーザー部か
ら燃焼器本体０１内へ噴射され、助燃剤（高温空
気または酸素）と混合して燃焼する。 To explain the operation of the burner, the pulverized coal supply path 10 is
The mixed airflow of pulverized coal transported to pulverized coal nozzle 2
Flashback is prevented by ejecting at a high speed of 6 to 100 m/s, so it is injected from the tip diff user part into the combustor main body 01 and mixes with the combustion improver (high temperature air or oxygen). and burn it.
噴霧空気供給路０９から導入される圧縮空気は
噴霧空気溜り１２へ送り込まれ、これに連通する
噴霧空気ノズル１３から二百数十ｍ／ｓの高速で
バーナチツプの灯油混合ノズル１５及びシード混
合ノズル１６へそれぞれ噴出する。 The compressed air introduced from the atomizing air supply path 09 is sent to the atomizing air reservoir 12, and from the atomizing air nozzle 13 communicating therewith, it is sent to the burner tip kerosene mixing nozzle 15 and the seed mixing nozzle 16 at a high speed of 200 m/s. gush to each.
一方、噴霧空気溜り１２の先端に設けられた微
粉炭スイープノズル１７からは、スリツトの通路
抵抗で減圧され、ノズル先端から100m／ｓ前後
で吹き出し、内周側の微粉炭噴出ジエツトによつ
て微粉炭噴口２６近傍に生ずる渦流の巻き込みを
阻止し、バーナチツプ２２の端面への未燃カーボ
ンの付着堆積を防止する。 On the other hand, from the pulverized coal sweep nozzle 17 provided at the tip of the atomizing air reservoir 12, the pressure is reduced due to the passage resistance of the slit, and the pulverized coal is blown out at around 100 m/s from the nozzle tip, and the pulverized coal is pulverized by the pulverized coal jet on the inner circumferential side. This prevents swirling of the vortex generated near the coal nozzle 26 and prevents unburned carbon from adhering to the end face of the burner chip 22.
また、噴霧空気溜り１２の上流部に連通するス
イープ空気供給路１４の通路抵抗で減圧された圧
縮空気の一部はノズルキヤツプ２３とバーナチツ
プ２２の空間を通つてバーナチツプ２２の先端に
設けられたシードスイープノズル２５から
100m／ｓ前後の速度でバーナの軸心部に向つて
吹き出す。 Further, a part of the compressed air whose pressure has been reduced due to the passage resistance of the sweep air supply path 14 communicating with the upstream part of the atomizing air reservoir 12 passes through the space between the nozzle cap 23 and the burner tip 22 to the seed provided at the tip of the burner tip 22. From sweep nozzle 25
It blows out toward the shaft center of the burner at a speed of around 100m/s.
ここでシードスイープノズル２５とシード混合
ノズル１６はそれぞれ対向して噴出口が穿けられ
ておりシードスイープノズル２５から吹き出す空
気流によつてシード混合ノズル１６から噴出され
るシードの噴霧ミストがバーナチツプ２２端面へ
巻込み付着することを防止する。 Here, the seed sweep nozzle 25 and the seed mixing nozzle 16 are respectively provided with jet ports facing each other, and the airflow blown from the seed sweep nozzle 25 causes the mist of seeds jetted from the seed mixing nozzle 16 to be directed to the end surface of the burner tip 22. Prevent it from getting caught and sticking to the surface.
灯油燃料供給路０７から圧送される燃料は灯油
分岐環１８を通つて灯油噴口２０から灯油混合ノ
ズル１５内へ噴出し、混合ノズル１５内の高速空
気ジエツトによつて微細な液滴に霧化され、各灯
油混合ノズル１５の噴口から放射状の灯油噴霧ジ
エツトＥで燃焼器内の気流淀み域Ｃへ噴射され、
助燃剤と混合して燃焼する。 The fuel pumped from the kerosene fuel supply path 07 passes through the kerosene branch ring 18 and is ejected from the kerosene nozzle 20 into the kerosene mixing nozzle 15, where it is atomized into fine droplets by the high-speed air jet inside the mixing nozzle 15. , is injected from the nozzle of each kerosene mixing nozzle 15 into an airflow stagnation area C in the combustor with a radial kerosene spray jet E;
It burns when mixed with a combustion aid.
またシード供給路０８から圧送されるシード剤
であるカリーウム水溶液はシード分岐環１９を通
つてシード噴口２１からシード混合ノズル１６内
へ噴出し、シード混合ノズル１６内の高速空気ジ
エツトによつて微細な液滴に霧化され、各シード
混合ノズル１６からシード噴霧ジエツトＤとなつ
て燃焼器内へ噴射され、高温燃焼火炎によつて蒸
発気化し高温ガスをイオン化する。 In addition, the potassium aqueous solution, which is a seed agent, which is pumped from the seed supply path 08 passes through the seed branch ring 19 and is ejected from the seed nozzle 21 into the seed mixing nozzle 16, and is finely divided by the high-speed air jet in the seed mixing nozzle 16. It is atomized into droplets and injected into the combustor from each seed mixing nozzle 16 as a seed spray jet D, where it is evaporated and vaporized by a high temperature combustion flame to ionize the high temperature gas.
上述のように本考案によるバーナは、冷却壁面
をもつ高温・高負荷燃焼器において、燃焼器へ投
入する石炭の燃焼生成物であるスラグおよびシー
ド剤からの生成物である硫酸カリまたは炭酸カリ
等の固形物が燃焼器頭部の器壁に付着堆積して燃
焼状態を阻害することを防止するものであり、前
述の作用で説明したように、微粉炭はバーナ軸心
部から搬送気流の噴出ジエツトＡによつて燃焼器
軸心部の循環流域Ｂへ噴射し、助燃剤（高温空気
又は酸素）と混合拡散して燃焼させ、バーナ近傍
での微粉炭の巻き込みを防止する。また微粉炭噴
口２６の外周部の微粉炭スイープノズル１７から
吹き出すスイープ空気によつてバーナチツプ２２
の微粉炭噴口２６端面への微粉炭の付着を防止す
る。 As mentioned above, the burner according to the present invention is used in a high-temperature, high-load combustor with a cooling wall surface, and burns slag, which is a combustion product of coal input into the combustor, and potassium sulfate or potassium carbonate, which is a product of a seeding agent. This prevents solid matter from adhering and accumulating on the wall of the combustor head and interfering with the combustion state.As explained in the above function, pulverized coal is ejected from the burner shaft center by the conveying air flow. It is injected into the circulation area B of the combustor shaft by jet A, mixed with combustion improver (high temperature air or oxygen) and diffused for combustion, thereby preventing pulverized coal from being caught in the vicinity of the burner. In addition, the burner chips 22 are
This prevents pulverized coal from adhering to the end face of the pulverized coal nozzle 26.
一方シード噴出ジエツトＤは燃焼器頭部に形成
される灯油噴霧ジエツトＥによる灯油燃料の火炎
とバーナ本体０４の軸心部に形成されるジエツト
噴流域Ａの微粉炭燃焼火炎の中に包み込まれて気
化する。従つてシードの噴霧ミストが直接燃焼器
のバーナチツプ２２の壁面に付着することを防止
できる。またシード噴口２１と対向したシードス
イープノズル２５からのシードスイープ空気の吹
き出しによつてバーナチツプ２２の端面へのシー
ド巻込み付着を防止する。このように各バーナノ
ズル近傍及び燃焼器頭部壁面へのシード及び微粉
炭の付着を防止することによつて燃焼器の燃焼状
態を安定して良好に保持することができ、また燃
焼器バーナの損耗を防ぐことができるためプラン
トの信頼性を大巾に向上させることができる。 On the other hand, the seed jet D is surrounded by the kerosene fuel flame from the kerosene spray jet E formed at the combustor head and the pulverized coal combustion flame from the jet jet area A formed at the axial center of the burner body 04. Vaporize. Therefore, it is possible to prevent the seed spray mist from directly adhering to the wall surface of the burner chip 22 of the combustor. Further, by blowing out the seed sweep air from the seed sweep nozzle 25 facing the seed nozzle 21, it is possible to prevent the seeds from being entrapped and attached to the end face of the burner chip 22. In this way, by preventing seeds and pulverized coal from adhering to the vicinity of each burner nozzle and the combustor head wall surface, the combustion state of the combustor can be maintained stably and well, and the wear and tear of the combustor burner can be prevented. This can greatly improve the reliability of the plant.
本考案を上記実施例について詳述したが、本考
案は上述の実施例に限定されることなく、要旨を
逸脱しない範囲内で種々変形して実施できること
は云うまでもない。 Although the present invention has been described in detail with reference to the above-mentioned embodiments, it goes without saying that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications within the scope of the invention.
第１図はサイクロン形燃焼器の断面形状と燃焼
器本体内の流れ模様の概略を示す断面概略図、第
２図ａは本考案の実施例によるバーナの要部縦断
面図、第２図ｂは本考案の実施例によるバーナの
Ａ−Ａ矢視正面図である。
０１……燃焼器本体、０２……主燃酸化剤の旋
回噴口、０３……パイロツトバーナ、０４……バ
ーナ本体、０５……主燃酸化剤の供給路、０６…
…予燃酸化剤の供給路、０７……灯油燃料供給
路、０８……シード剤（カリユウム水溶液）の供
給路、０９……噴霧空気供給路、１０……微粉炭
供給路、１１……予燃酸化剤スワラー、１２……
噴霧空気溜り、１３……噴霧空気ノズル、１４…
…スイープ空気供給路、１５……灯油混合ノズ
ル、１６……シード混合ノズル、１７……微粉炭
スイープノズル、１８……灯油分岐環、１９……
シード分岐環、２０……灯油噴口、２１……シー
ド噴口、２２……バーナチツプ、２３……バーナ
キヤツプ、２４……微粉炭ノズル本体、２５……
シードスイープノズル、２６……微粉炭噴口、Ａ
……ジエツト噴流域、Ｂ……循環流域、Ｃ……淀
み領域、Ｄ……シード噴霧ジエツト、Ｅ……灯油
噴霧ジエツト、θ……シード噴霧ノズル噴射角
度、θ2……灯油噴霧ノズル噴射角度。
Fig. 1 is a cross-sectional schematic diagram showing the cross-sectional shape of a cyclone-type combustor and the flow pattern inside the combustor body; Fig. 2a is a vertical sectional view of the main part of a burner according to an embodiment of the present invention; Fig. 2b FIG. 2 is a front view taken along the line A-A of the burner according to the embodiment of the present invention. 01... Combustor main body, 02... Main fuel oxidant swirl nozzle, 03... Pilot burner, 04... Burner main body, 05... Main combustion oxidant supply path, 06...
...Pre-combustion oxidizer supply path, 07...Kerosene fuel supply path, 08...Seed agent (potassium aqueous solution) supply path, 09...Atomizing air supply path, 10...Pulverized coal supply path, 11...Preliminary coal supply path Fuel oxidant swirler, 12...
Atomizing air reservoir, 13... Atomizing air nozzle, 14...
... Sweep air supply path, 15 ... Kerosene mixing nozzle, 16 ... Seed mixing nozzle, 17 ... Pulverized coal sweep nozzle, 18 ... Kerosene branch ring, 19 ...
Seed branch ring, 20...kerosene nozzle, 21...seed nozzle, 22...burner tip, 23...burner cap, 24...pulverized coal nozzle body, 25...
Seed sweep nozzle, 26...pulverized coal spout, A
... Jet jet area, B... Circulation area, C... Stagnation area, D... Seed spray jet, E... Kerosene spray jet, θ... Seed spray nozzle injection angle, θ 2 ... Kerosene spray nozzle injection angle .
Claims (1)
同バーナ端面の軸心部にデイフユーザ形の粉体噴
出口を設け、同外周上にその円周が異なり噴射角
度の異なるシード混合ノズルと液体燃料混合ノズ
ルと共に、前記粉体噴出口の外周上及び前記シー
ド混合ノズルの外周上にそれぞれスイープノズル
をリング状に複数個配設し、前記各ノズルに連通
する噴霧空気溜りを前記バーナ内部に設けたこと
を特徴とする混焼用バーナ。 In a co-combustion burner with a multi-component nozzle,
A diffuser-shaped powder jet nozzle is provided at the axial center of the end face of the burner, and a seed mixing nozzle and a liquid fuel mixing nozzle with different circumferences and different injection angles are arranged on the outer periphery of the powder jet nozzle. A burner for co-firing, characterized in that a plurality of sweep nozzles are arranged in a ring shape on the outer periphery of the seed mixing nozzle, and a spray air pocket communicating with each nozzle is provided inside the burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6909283U JPS59175846U (en) | 1983-05-11 | 1983-05-11 | Mixed combustion burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6909283U JPS59175846U (en) | 1983-05-11 | 1983-05-11 | Mixed combustion burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59175846U JPS59175846U (en) | 1984-11-24 |
| JPH0129395Y2 true JPH0129395Y2 (en) | 1989-09-07 |
Family
ID=30199255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6909283U Granted JPS59175846U (en) | 1983-05-11 | 1983-05-11 | Mixed combustion burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59175846U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009085159A (en) * | 2007-10-02 | 2009-04-23 | Ihi Aerospace Co Ltd | Thruster for spacecraft |
-
1983
- 1983-05-11 JP JP6909283U patent/JPS59175846U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59175846U (en) | 1984-11-24 |
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