JPH01111107A - Cyclone coal combustion furnace with unburnt char recombustion system - Google Patents
Cyclone coal combustion furnace with unburnt char recombustion systemInfo
- Publication number
- JPH01111107A JPH01111107A JP26624287A JP26624287A JPH01111107A JP H01111107 A JPH01111107 A JP H01111107A JP 26624287 A JP26624287 A JP 26624287A JP 26624287 A JP26624287 A JP 26624287A JP H01111107 A JPH01111107 A JP H01111107A
- Authority
- JP
- Japan
- Prior art keywords
- ash
- burnt
- combustion
- duct
- ashes
- 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 98
- 239000003245 coal Substances 0.000 title claims abstract description 83
- 238000011084 recovery Methods 0.000 claims 1
- 239000002956 ash Substances 0.000 abstract description 98
- 238000004064 recycling Methods 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003546 flue gas Substances 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 235000002918 Fraxinus excelsior Nutrition 0.000 abstract 11
- 239000000126 substance Substances 0.000 abstract 1
- 239000000567 combustion gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000002893 slag Substances 0.000 description 4
- 239000011362 coarse particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Landscapes
- Combustion Of Fluid Fuel (AREA)
Abstract
Description
【発明の詳細な説明】
し産業上の利用分野］
本発明はボイラ本体燃焼室に付設し、送入された微粉炭
を高温・高熱負荷の条件下で燃焼し、周壁に付着させた
燃焼灰を溶融状態にて排出するサイクロン石炭燃焼炉に
関するものである。[Detailed description of the invention] Industrial application field] The present invention is attached to the combustion chamber of the boiler main body, and burns the introduced pulverized coal under conditions of high temperature and high heat load to produce combustion ash that adheres to the peripheral wall. This relates to a cyclone coal combustion furnace that discharges coal in a molten state.
［従来の技術］
従来、石炭をボイラ用燃料として使用する場合、ボイラ
本体燃焼室で微粉状にして燃焼する方法、ボイラ本体燃
焼室下部で粗粒状にして流動燃焼する方法およびボイラ
本体燃焼室に付設したサイクロン石炭燃焼炉において微
粉状にした石炭を高温・高熱負荷で燃焼する等の方法が
行なわれていた。まずボイラ本体燃焼室で微粉状にして
燃焼する方法は本来固体の石炭を液体燃料状に取り扱う
ことによりボイラの負荷変化に対して極めて優れた追従
性を有していた。次にボイラ本体燃焼室下部で粗粒状に
して流動層を形成し燃焼する方法は燃焼室内での滞留時
間が長いことにより、難燃性の石炭でも燃焼し得ること
、粗粒で燃焼するためにミルでの粉砕動力が削減でき経
済的であることおよび媒体の添加により燃焼室内におい
て脱硫が可能であるなど多くの優れた特性を有していた
。またサイクロン石炭燃焼炉において微粉炭を高温・高
熱負荷で燃焼する方法は、燃焼灰の大部分（８０〜９０
％）をサイクロン石炭燃焼炉の周壁に付着させ、溶融状
態で外部に排出することにより、ボイラ本体には非常に
灰分の少ない高温の燃焼ガスを供給し得ると言う利点を
有していた。[Prior art] Conventionally, when coal is used as fuel for a boiler, there are two methods: pulverized and combusted in the combustion chamber of the boiler, coarse particles and fluidized combustion in the lower part of the combustion chamber of the boiler, and coal in the combustion chamber of the boiler. Methods such as combusting pulverized coal at high temperature and high heat load in an attached cyclone coal combustion furnace were used. First, the method of pulverizing and burning coal in the combustion chamber of the boiler body has an extremely excellent ability to follow changes in the boiler load by treating originally solid coal as liquid fuel. Next, the method of burning coal by making it into coarse particles to form a fluidized bed in the lower part of the combustion chamber of the boiler main body has the advantage that even flame-retardant coal can be combusted due to the long residence time in the combustion chamber. It had many excellent properties, such as being economical as it reduced the grinding power in the mill, and desulfurization within the combustion chamber by adding a medium. In addition, in the method of burning pulverized coal at high temperature and high heat load in a cyclone coal combustion furnace, most of the combustion ash (80 to 90
%) on the peripheral wall of a cyclone coal combustion furnace and discharged to the outside in a molten state, it had the advantage of being able to supply high-temperature combustion gas with a very low ash content to the boiler body.
［発明が解決しようとする問題点］
しかしながら上記従来の石炭の燃焼方法は、まずボイラ
本体燃焼室で微粉状にして燃焼した場合、石炭中の灰分
は全量が燃焼ガス中に浮遊した状態でボイラ本体中を通
過するためにボイラチューブの摩耗を生じ、また煙道中
で捕集した灰は粉末状であるために、これを処理する場
合に大気中に飛散し易く、また地中に埋めた場合、地下
水によって有害成分が溶出すると言う不具合を有してい
た。次にボイラ本体燃焼室下部で粗粒状にして流動燃焼
する場合、石炭中の灰分の一部はフライアッシュとして
燃焼ガス中に浮遊した状態でボイラ本体中を通過し、そ
の他は燃焼室内の温度が低温であるためにドライアッシ
ュとして炉底から粉末状で排出される。このためボイラ
チューブの摩耗を生じるとともに、炉底から捕集した灰
の処理に際して大気中への飛散或いは地下水中への有害
成分の溶出と言う不具合を有していた。またサイクロン
石炭燃焼炉において微粉炭を高温・高熱負荷で燃焼する
方法では、燃焼灰の大部をサイクロン石炭燃焼炉の周壁
に付着させ、溶融状態でボイラ本体に送入される前に外
部に排出し得るが、残りの灰分（１０〜２０％）は燃焼
ガスとともにボイラ本体を経て煙道に排出されるために
、灰中に残存する未燃チャーも灰と一緒に排出され、ボ
イラの燃焼効率を低下させると言う不具合を有していた
。[Problems to be Solved by the Invention] However, in the conventional coal combustion method described above, when the coal is first pulverized and combusted in the combustion chamber of the boiler main body, the entire ash content in the coal is suspended in the combustion gas before it is released into the boiler. The ash passing through the main body causes wear on the boiler tube, and the ash collected in the flue is in powder form, so it easily scatters into the atmosphere when disposed of, and when buried underground. However, the problem was that harmful components were leached into the groundwater. Next, when the coal is made into coarse particles and fluidized in the lower part of the combustion chamber of the boiler, part of the ash in the coal passes through the boiler while suspended in the combustion gas as fly ash, and the rest remains at a temperature within the combustion chamber. Due to its low temperature, it is discharged from the bottom of the furnace as dry ash in powder form. This causes the boiler tube to wear out, and when the ash collected from the bottom of the furnace is disposed of, there are problems such as scattering into the atmosphere or elution of harmful components into underground water. In addition, in the method of burning pulverized coal at high temperature and high heat load in a cyclone coal combustion furnace, most of the combustion ash is attached to the peripheral wall of the cyclone coal combustion furnace and is discharged outside before being fed into the boiler body in a molten state. However, since the remaining ash content (10-20%) is discharged into the flue through the boiler body along with the combustion gas, the unburned char remaining in the ash is also discharged together with the ash, reducing the combustion efficiency of the boiler. It had the problem of lowering the
［問題点を解決するための手段］
上記問題点を解決するための手段は、前記特許請求の範
囲に記載のとおり、ボイラ本体燃焼室に付設し、送入さ
れた微粉炭を高温・高熱負荷の条件下で燃焼し、周壁に
付着させた燃焼灰を溶融状態にて排出するサイクロン石
炭燃焼炉において、ボイラ本体下部および排ガス煙道部
に燃焼灰回収手段を設けて未燃チャーを含む燃焼灰を回
収し、サイクロン石炭燃焼炉に投入して再燃焼すること
を特徴とする未燃チャー再燃焼系を有するサイクロン石
炭燃焼炉である。[Means for solving the problem] As described in the claims, the means for solving the above problem is provided by attaching the pulverized coal to the combustion chamber of the boiler main body and subjecting the introduced pulverized coal to high temperature and high heat load. In a cyclone coal combustion furnace that burns under the following conditions and discharges the combustion ash attached to the peripheral wall in a molten state, a combustion ash collection means is installed in the lower part of the boiler body and in the exhaust gas flue to recover the combustion ash containing unburned char. This is a cyclone coal combustion furnace having an unburnt char reburning system, which collects unburned char and charges it into a cyclone coal combustion furnace to reburn it.
［作 用］
ボイラ本体燃焼室にサイクロン石炭燃焼炉を付設した微
粉炭燃焼ボイラにおいて、ボイラ本体燃焼室下部および
ボイラ本体接触部下部にそれぞれ反出し装置を固設する
。ボイラ本体と煙突との間の煙道部に集塵器を配設し、
採取した灰の排出装置を設ける。灰リサイクルファンを
真数し、吸込側を大気に開口し、吐出側にダクトを配設
する。[Function] In a pulverized coal combustion boiler in which a cyclone coal combustion furnace is attached to the combustion chamber of the boiler main body, a repulsion device is fixedly installed in the lower part of the combustion chamber of the boiler main body and the lower part of the contact part of the boiler main body, respectively. A dust collector is installed in the flue between the boiler body and the chimney,
A device for discharging the collected ash will be provided. The ash recycling fans are arranged in parallel, the suction side is open to the atmosphere, and the discharge side is provided with a duct.
該ダクトにボイラ本体燃焼室下部、ボイラ本体接触部下
部および煙道ガス集塵器の各反出し装置排出部を接続し
、ダクト中に排出されたフライアッシュおよびシンダー
アッシュをリサイクルアッシュ用分離器に接続して、風
送されたアッシュと空気とを分離する。分離されたアッ
シュはリサイクルアッシュビンに貯蔵する。サイクロン
石炭燃焼炉で燃焼される石炭はミルで粉砕されて微粉炭
となり、１次送風機によって昇圧された空気によって微
粉炭ダクト中を通りサイクロン石炭燃焼炉に送入される
。リサイクルアッシュビンに貯蔵されたアッシュを上記
の微粉炭ダクト中に混入することにより、ボイラ本体お
よび煙道ダクト中から捕集されたアッシュは全量がサイ
クロン石炭燃焼炉に返戻されることになり、再びサイク
ロン石炭燃焼炉中で高温・高熱負荷の条件下でサイクロ
ン石炭燃焼炉の周壁に付着し、溶融状態となって排出さ
れる。上記のアッシュリサイクル系の運用によってサイ
クロン石炭燃焼炉に供給された石炭の灰分は、はぼ全量
がサイクロン石炭燃焼炉において捕集され、溶融状態で
排出されることにより、大気中に飛散するのは煙道ガス
中に配設された集塵器で捕集し得なかった微量の極微粒
子の灰分のみとなる。また上記のアッシュリサイクル系
の運用によって、灰中に含有されている未燃チャーは、
サイクロン石炭燃焼炉に送入された後、ボイラ本体を経
て煙道ダクト中に配設した集塵器に至り、更にリサイク
ルファンによってリサイクルアッシュ用分離器に送られ
分離されてアッシュビンに貯蔵され、再びサイクロン石
炭燃焼炉に送入されて高温・高熱負荷の条件下におかれ
ると言うサイクルを繰り返す間に再燃焼を完了すること
により、ボイラ全体の燃焼効率を著しく向上させること
が可能になると言う効果を有する。The lower part of the combustion chamber of the boiler main body, the lower part of the contact part of the boiler main body, and the discharge part of the flue gas dust collector are connected to the duct, and the fly ash and cinder ash discharged into the duct are transferred to the recycled ash separator. connection to separate the blown ash and air. Separated ash is stored in recycled ash bins. The coal burned in the cyclone coal combustion furnace is pulverized in a mill to become pulverized coal, which is then fed into the cyclone coal combustion furnace through a pulverized coal duct by air pressurized by a primary blower. By mixing the ash stored in the recycled ash bin into the pulverized coal duct, all of the ash collected from the boiler body and flue duct will be returned to the cyclone coal combustion furnace and recycled again. Under conditions of high temperature and high heat load in the cyclone coal combustion furnace, it adheres to the peripheral wall of the cyclone coal combustion furnace and is discharged in a molten state. Almost all of the ash content of the coal supplied to the cyclone coal combustion furnace through the operation of the above ash recycling system is collected in the cyclone coal combustion furnace and discharged in a molten state. Only trace amounts of ultrafine particles of ash that could not be collected by the dust collector installed in the flue gas remain. In addition, by operating the ash recycling system described above, unburned char contained in the ash is removed.
After being sent to the cyclone coal combustion furnace, it passes through the boiler body to a dust collector installed in the flue duct, and is then sent to a recycled ash separator by a recycling fan where it is separated and stored in an ash bin. By completing the re-combustion during the repeated cycle of being sent to the cyclone coal combustion furnace and subjected to high temperature and heat load conditions, it is possible to significantly improve the overall combustion efficiency of the boiler. have an effect.
［実施例］ 以下に本発明の実施例を図面に基いて説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明に基く、未燃チャーの再燃焼系を有する
サイクロン石炭燃焼炉を真数した微粉炭燃焼ボイラの系
統図である。第１図において、１はサイクロン石炭燃焼
炉、２はボイラ本体、３は煙道ガス集塵器、４は灰リサ
イクルファン、５は燃焼灰リサイクルダクト、６はボイ
ラ本体接触部下部灰排出ダクト、７はボイラ本体燃焼室
下部灰排出ダクト、８はリサイクルアッシュ用分離器、
９はリサイクルアッシュビン、 １０は微粉炭サイロ、
１１は微粉炭フィーダ、１２は１次送風機、１３は微粉
炭ダクト、１４はスラグ用コンテナ、１５は煙突である
。ミルで粉砕された石炭は、まず微粉炭サイロ１０に貯
蔵された後ボイラ本体２の負荷に応じた量を微粉炭フィ
ーダ１１によって切り出され、１次送風機１２から送ら
れた圧力空気によって微粉炭ダクト１３中を通りサイク
ロン石炭燃焼炉１に供給される。サイクロン石炭燃焼炉
１に供給された微粉炭は旋回しながら高温・高熱負荷の
条件下で燃焼する。サイクロン石炭燃焼炉１内では強い
旋回流により、燃焼灰の大部分（８０〜９０％）は周壁
に衝突、付着したのち溶融状態となって排出孔から外部
に排出され、水によって冷却された後スラグ用コンテナ
１４に投入される。サイクロン石炭燃焼炉１からボイラ
本体２に送入された高温の燃焼ガスはボイラ本体２の燃
焼室内で燃焼を完結した後、ボイラ本体２内で輻射およ
び接触によってボイラ水と熱交換を行ない低温の状態で
排出され、空気予熱器等によって更に熱交換を行ない低
温の状態で煙突１５から大気中に放出される。この間に
ボイラ本体２に送入された燃焼ガスは、ボイラ本体２の
燃焼室および接触部において、風送された灰分の一部を
落下させるが、残りの大部分の灰分な燃焼排ガス中に浮
遊させた状態で煙道ダクト中を通り、ボイラ本体２と煙
突１５とを連結する煙道ダクト中に配設した煙道ガス集
塵器３に至る。煙道ガス集塵器において微量の極微粒子
の灰分を除いた大部の灰分を捕集された燃焼排ガスは煙
突１５から大気中に放出される。捕集した燃焼灰の風送
用に灰リサイクルファン４を真数する。灰リサイクルフ
ァン４は吸込側を大気に開口し、吐出側に燃焼灰リサイ
クルダクト５を配設し、該ダクト５に煙道ガス集塵器３
の灰排出ダクト、ボイラ本体２の接触部下部灰排出ダク
ト６、ボイラ本体２の燃焼室下部灰排出ダクト７を接続
し、各部から排出されたプライアッシュ或いはシンダー
アッシュ等の燃焼灰をリサイクルアッシュ用分離器８に
送入し、燃焼灰と空気とを分離する。分離された燃焼灰
はリサイクルアッシュビン９に貯蔵する。リサイクルア
ッシュビン９の下部は微粉炭ダクト１３に接続されてお
り、貯蔵した燃焼灰を連続的に微粉炭ダクト中に送入可
能な構造としである。これによって１次送風機１２から
の空気によって搬送される微粉炭と共に回収した燃焼灰
をサイクロン石炭燃焼炉１内に供給することが可能とな
る。サイクロン石炭燃焼炉１内に供給された燃焼灰は再
び旋回しながら高温・高熱負荷の条件下におかれること
により、燃焼灰中の未燃チャーの燃焼を行なうとともに
周壁に衝突、付着し、溶融状態となって排出孔から外部
に排出される。FIG. 1 is a system diagram of a pulverized coal combustion boiler based on the present invention, which is a cyclone coal combustion furnace having a reburning system for unburned char. In Fig. 1, 1 is a cyclone coal combustion furnace, 2 is a boiler main body, 3 is a flue gas dust collector, 4 is an ash recycling fan, 5 is a combustion ash recycling duct, 6 is an ash discharge duct at the bottom of the contact part of the boiler body, 7 is the ash discharge duct at the bottom of the combustion chamber of the boiler main body, 8 is the recycled ash separator,
9 is a recycled ash bin, 10 is a pulverized coal silo,
11 is a pulverized coal feeder, 12 is a primary blower, 13 is a pulverized coal duct, 14 is a slag container, and 15 is a chimney. Coal pulverized in the mill is first stored in a pulverized coal silo 10, and then cut out by a pulverized coal feeder 11 in an amount corresponding to the load of the boiler body 2, and then transported to a pulverized coal duct by pressurized air sent from a primary blower 12. 13 and is supplied to the cyclone coal combustion furnace 1. The pulverized coal supplied to the cyclone coal combustion furnace 1 burns under conditions of high temperature and high heat load while swirling. Due to the strong swirling flow inside the cyclone coal combustion furnace 1, most of the combustion ash (80 to 90%) collides with the peripheral wall, adheres to it, becomes molten, and is discharged to the outside from the discharge hole, after being cooled by water. The slag is placed in the slag container 14. The high-temperature combustion gas sent from the cyclone coal combustion furnace 1 to the boiler body 2 completes combustion in the combustion chamber of the boiler body 2, and then exchanges heat with boiler water through radiation and contact within the boiler body 2, resulting in low-temperature combustion gas. The air is discharged in a low temperature state, and is further heat-exchanged by an air preheater or the like, and is discharged into the atmosphere from the chimney 15 in a low-temperature state. During this period, the combustion gas sent to the boiler body 2 drops some of the ash that is blown by the wind in the combustion chamber and the contact area of the boiler body 2, but most of the remaining ash is suspended in the ash combustion exhaust gas. In this state, the gas passes through the flue duct and reaches the flue gas dust collector 3 disposed in the flue duct connecting the boiler main body 2 and the chimney 15. The flue gas, in which most of the ash except for a very small amount of ash, is collected in the flue gas dust collector, is discharged into the atmosphere from the chimney 15. An ash recycling fan 4 is provided for blowing the collected combustion ash. The ash recycling fan 4 has a suction side open to the atmosphere, a combustion ash recycling duct 5 disposed on the discharge side, and a flue gas dust collector 3 installed in the duct 5.
The ash discharge duct of the boiler body 2, the ash discharge duct 6 at the lower part of the contact part of the boiler body 2, and the ash discharge duct 7 at the lower part of the combustion chamber of the boiler body 2 are connected, and the combustion ash such as ply ash or cinder ash discharged from each part is recycled for ash. The combustion ash is sent to a separator 8 to separate combustion ash and air. The separated combustion ash is stored in a recycling ash bin 9. The lower part of the recycling ash bin 9 is connected to a pulverized coal duct 13, and has a structure that allows the stored combustion ash to be continuously fed into the pulverized coal duct. This makes it possible to supply the recovered combustion ash into the cyclone coal combustion furnace 1 together with the pulverized coal carried by the air from the primary blower 12 . The combustion ash supplied into the cyclone coal combustion furnace 1 is rotated again and subjected to high temperature and high heat load conditions, thereby burning the unburned char in the combustion ash, colliding with the surrounding wall, adhering to it, and melting it. state and is discharged to the outside from the discharge hole.
［発明の効果］
本発明は上記実施例から明らかなように、サイクロン石
炭燃焼炉からボイラ本体側に燃焼ガス中を浮遊状態で搬
送された燃焼灰を、ボイラ本体下部および煙道ガス集塵
器によフて捕集し、捕集した燃焼灰を再び微粉炭ととも
にサイクロン石炭燃焼炉に投入することにより、微粉炭
中の灰分ははぼ全量がサイクロン石炭燃焼炉において捕
集され、溶融状態で排出されることにより、燃焼灰の大
気中への飛散を防止し、捕集した燃焼灰の処理時におけ
る地下水中への有害成分の溶出と言う問題点を解決する
ことが可能になる。また燃焼灰の再循環、再燃焼を繰り
返すことにより、燃焼灰中に含有された未燃チャーの燃
焼を完了することが可能となることにより、ボイラ全体
の燃焼効率を著しく向上させることが可能になると言う
効果を有する。[Effects of the Invention] As is clear from the above embodiments, the present invention allows combustion ash, which is carried in a suspended state in combustion gas from a cyclone coal combustion furnace to the boiler main body, to be transferred to the lower part of the boiler main body and the flue gas dust collector. The collected combustion ash is collected together with pulverized coal again into the cyclone coal combustion furnace, and almost all of the ash in the pulverized coal is collected in the cyclone coal combustion furnace and remains in a molten state. By discharging the ash, it is possible to prevent the combustion ash from scattering into the atmosphere and solve the problem of harmful components leaching into groundwater during the treatment of the collected combustion ash. Furthermore, by repeating the recirculation and reburning of the combustion ash, it is possible to complete the combustion of the unburned char contained in the combustion ash, making it possible to significantly improve the combustion efficiency of the entire boiler. It has the effect of:
第１図は本発明に基く一実施例で、未燃チャーの再燃焼
系を有するサイクロン石炭燃焼炉を真数した微粉炭燃焼
ボイラの系統図である。
１・・・サイクロン石炭燃焼炉、２・・・ボイラ本体、
３・・・煙道ガス集塵器、
４・・・灰リサイクルファン、
５・・・燃焼灰リサイクルダクト、
６・・・ボイラ本体接触部下部灰排出ダクト、７・・・
ボイラ本体燃焼室下部灰排出ダクト、８・・・リサイク
ルアッシュ用分離器、９・・・リサイクルアッシュビン
、
１０・・・微粉炭サイロ、 １１・・・微粉炭フィー
ダ、１２・・・１次送風機、 １３・・・微粉炭ダ
クト、１４・・・スラグ用コンテナ、１５・・・煙突。FIG. 1 is an embodiment of the present invention, which is a system diagram of a pulverized coal combustion boiler which is a cyclone coal combustion furnace having a re-combustion system for unburned char. 1... Cyclone coal combustion furnace, 2... Boiler body,
3... Flue gas dust collector, 4... Ash recycling fan, 5... Combustion ash recycling duct, 6... Ash discharge duct at the bottom of the boiler body contact part, 7...
Boiler body combustion chamber lower ash discharge duct, 8... Separator for recycled ash, 9... Recycled ash bin, 10... Pulverized coal silo, 11... Pulverized coal feeder, 12... Primary blower , 13...Pulverized coal duct, 14...Slag container, 15...Chimney.
Claims (1)
高熱負荷の条件下で燃焼し、周壁に付着させた燃焼灰を
溶融状態にて排出するサイクロン石炭燃焼炉において、
ボイラ本体下部および排ガス煙道部に燃焼灰回収手段を
設けて未燃チャーを含む燃焼灰を回収し、サイクロン石
炭燃焼炉に投入して再燃焼することを特徴とする未燃チ
ャー再燃焼系を有するサイクロン石炭燃焼炉。Attached to the combustion chamber of the boiler main body, the pulverized coal sent in is heated to a high temperature.
In a cyclone coal combustion furnace that burns under high heat load conditions and discharges combustion ash attached to the surrounding wall in a molten state,
An unburned char re-burning system is provided, in which a combustion ash recovery means is provided in the lower part of the boiler body and in the exhaust gas flue to recover combustion ash containing unburned char, and the ash is fed into a cyclone coal combustion furnace and re-burned. Cyclone coal burning furnace with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26624287A JPH01111107A (en) | 1987-10-23 | 1987-10-23 | Cyclone coal combustion furnace with unburnt char recombustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26624287A JPH01111107A (en) | 1987-10-23 | 1987-10-23 | Cyclone coal combustion furnace with unburnt char recombustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01111107A true JPH01111107A (en) | 1989-04-27 |
Family
ID=17428249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26624287A Pending JPH01111107A (en) | 1987-10-23 | 1987-10-23 | Cyclone coal combustion furnace with unburnt char recombustion system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01111107A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997045675A1 (en) * | 1996-05-31 | 1997-12-04 | Magaldi Ricerche E Brevetti S.R.L. | Process for recirculating ashes generated by steam producing boilers |
| WO2006005574A1 (en) * | 2004-07-09 | 2006-01-19 | Magaldi Power S.P.A. | Integrated system for the extraction of heavy ash, conversion thereof into light ash and reduction of unburnt matter |
| WO2009112328A3 (en) * | 2008-03-03 | 2010-10-21 | Clyde Bergemann Drycon Gmbh | System for ash recycling |
| CN102519046A (en) * | 2011-12-02 | 2012-06-27 | 西安交通大学 | Chemical waste recycling system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852410B2 (en) * | 1979-09-27 | 1983-11-22 | 日立電線株式会社 | overhead distribution line |
-
1987
- 1987-10-23 JP JP26624287A patent/JPH01111107A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852410B2 (en) * | 1979-09-27 | 1983-11-22 | 日立電線株式会社 | overhead distribution line |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997045675A1 (en) * | 1996-05-31 | 1997-12-04 | Magaldi Ricerche E Brevetti S.R.L. | Process for recirculating ashes generated by steam producing boilers |
| WO2006005574A1 (en) * | 2004-07-09 | 2006-01-19 | Magaldi Power S.P.A. | Integrated system for the extraction of heavy ash, conversion thereof into light ash and reduction of unburnt matter |
| AU2005261832B2 (en) * | 2004-07-09 | 2010-04-01 | Magaldi Power S.P.A. | Integrated system for the extraction of heavy ash, conversion thereof into light ash and reduction of unburnt matter |
| US8091491B2 (en) | 2004-07-09 | 2012-01-10 | Magaldi Power S.P.A. | Integrated system for the extraction of heavy ash, conversion thereof into light ash and reduction of unburnt matter |
| JP4861318B2 (en) * | 2004-07-09 | 2012-01-25 | マガルディ パワー ソシエタ ペル アチオニ | Method and system for separating heavy ash and light ash and reducing unburned matter content |
| KR101222144B1 (en) * | 2004-07-09 | 2013-01-14 | 마갈디 파워 에스.피.에이. | Integrated system for the extraction of heavy ash, conversion thereof into light ash and reduction of unburnt matter |
| WO2009112328A3 (en) * | 2008-03-03 | 2010-10-21 | Clyde Bergemann Drycon Gmbh | System for ash recycling |
| CN102519046A (en) * | 2011-12-02 | 2012-06-27 | 西安交通大学 | Chemical waste recycling system and method |
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