JPS6219645B2 - - Google Patents
Info
- Publication number
- JPS6219645B2 JPS6219645B2 JP55100235A JP10023580A JPS6219645B2 JP S6219645 B2 JPS6219645 B2 JP S6219645B2 JP 55100235 A JP55100235 A JP 55100235A JP 10023580 A JP10023580 A JP 10023580A JP S6219645 B2 JPS6219645 B2 JP S6219645B2
- Authority
- JP
- Japan
- Prior art keywords
- pulverized fuel
- air
- compartment
- secondary air
- mixture
- 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
- 239000000446 fuel Substances 0.000 claims description 135
- 238000002347 injection Methods 0.000 claims description 57
- 239000007924 injection Substances 0.000 claims description 57
- 239000000203 mixture Substances 0.000 claims description 43
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000009841 combustion method Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 33
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Combustion Of Fluid Fuel (AREA)
Description
【発明の詳細な説明】
本発明は、NOxの発生を抑制させる微粉燃料
燃焼方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pulverized fuel combustion method for suppressing the generation of NOx.
まず、微粉炭バーナを第１図、第２図に基づい
て説明する。 First, a pulverized coal burner will be explained based on FIGS. 1 and 2.
微粉燃料供給管１の下流端は微粉燃料分配器２
に連結し、微紛燃料分配器２の徴粉燃料の割合が
多い出口側は、微粉燃料供給管３を介して１次空
気・微粉燃料混合気通路４と連通している。１次
空気・微粉燃料混合気通路４の下流端に微粉燃料
噴射ノズル５が設けられている。微粉燃料分配器
２の微粉燃料の割合が少ない出口側は、微粉燃料
供給管６を介して１次空気・微粉燃料混合気通路
７と連通している。１次空気・微粉燃料混合気通
路７の下流端に微粉燃料噴射ノズル８が設けられ
ている。２次空気送風機が２次空気供給管９と連
結し、２次空気供給管９はさらに夫々の１次空
気・微粉燃料混合気通路４，７の周囲に形成さ
れ、下流端に２次空気噴射ノズル１０，１１が設
けられた２次空気通路１２，１３と連通し、又補
助空気ノズル１４が設けられた補助空気通路１５
と連通している。 The downstream end of the pulverized fuel supply pipe 1 is connected to a pulverized fuel distributor 2
The outlet side of the pulverized fuel distributor 2, which has a high proportion of pulverized fuel, communicates with the primary air/pulverized fuel mixture passage 4 via the pulverized fuel supply pipe 3. A pulverized fuel injection nozzle 5 is provided at the downstream end of the primary air/fine fuel mixture passage 4 . The outlet side of the pulverized fuel distributor 2 where the proportion of pulverized fuel is small is communicated with a primary air/pulverized fuel mixture passage 7 via a pulverized fuel supply pipe 6 . A pulverized fuel injection nozzle 8 is provided at the downstream end of the primary air/fine fuel mixture passage 7 . A secondary air blower is connected to a secondary air supply pipe 9, and the secondary air supply pipe 9 is further formed around each primary air/pulverized fuel mixture passage 4, 7, and has a secondary air injection at the downstream end. An auxiliary air passage 15 communicates with secondary air passages 12, 13 in which nozzles 10, 11 are provided and also in which an auxiliary air nozzle 14 is provided.
It communicates with
微粉燃料噴射ノズル５、１次空気・微粉燃料混
合気通路４、２次空気通路１２、２次空気噴射ノ
ズル１０で第１の微粉燃料吹込コンパートメント
を形成し、微粉燃料噴射ノズル８、１次空気・微
粉燃料混合気通路７、２次空気通路１３、２次空
気噴射ノズル１１で第２の微粉燃料吹込コンパー
トメントを形成し、補助空気通路１５、補助空気
噴射ノズル１４で補助空気コンパートメントを形
成している。これら３つのコンパートメントを近
接して配置するため、第１のコールコンパートメ
ントの上側に隣接して第２のコールコンパートメ
ントを設け、第１のコールコンパートメントの下
側に隣接して補助空気コンパートメントを設けて
いる。 The pulverized fuel injection nozzle 5, the primary air/pulverized fuel mixture passage 4, the secondary air passage 12, and the secondary air injection nozzle 10 form a first pulverized fuel injection compartment, and the pulverized fuel injection nozzle 8, the primary air - The pulverized fuel mixture passage 7, the secondary air passage 13 and the secondary air injection nozzle 11 form a second pulverized fuel injection compartment, and the auxiliary air passage 15 and the auxiliary air injection nozzle 14 form an auxiliary air compartment. There is. To place these three compartments in close proximity, a second call compartment is provided adjacent to the upper side of the first call compartment, and an auxiliary air compartment is provided adjacent to the lower side of the first call compartment. .
微粉燃料バーナにおける、１次空気量と発生す
る窒素酸化物（NOx）の関係は、第３図のよう
に、１次空気量が揮発分の燃焼理論量ａ点より少
ない領域では、NOxは１次空気が少ない程低
く、１次空気量が揮発分の燃焼理論量を越えかつ
石炭の燃焼理論量ｂよりも少ない領域では、空気
量の多い程NOxは低くなる。 The relationship between the amount of primary air and nitrogen oxides (NOx) generated in a pulverized fuel burner is as shown in Figure 3. In the region where the amount of primary air is less than the theoretical amount of combustion of volatile matter at point a, NOx is 1. The smaller the amount of primary air, the lower the NOx, and in the region where the amount of primary air exceeds the stoichiometric combustion amount of volatile matter and is less than the stoichiometric amount b of combustion of coal, the larger the amount of air, the lower the NOx.
微粉燃料供給管１を通つて、第３図のａ点近傍
の濃度を持つ１次空気微粉燃料混合気は微粉燃料
分配器２に於いて、適当な機構により第３図のｃ
点、ｂ点の近傍の濃度を持つ、濃度の異なる二つ
の混合気に分れる。 After passing through the pulverized fuel supply pipe 1, the primary air pulverized fuel mixture having a concentration near point a in FIG.
It separates into two mixtures with different concentrations, with concentrations near point and point b.
濃度ｃの混合気は、１次空気、微粉燃料混合気
通路４を通り、微粉燃料噴射ノズル５から炉内へ
噴射される。 The mixture having a concentration c passes through the primary air and pulverized fuel mixture passage 4 and is injected into the furnace from the pulverized fuel injection nozzle 5.
また２次空気は２次空気供給管９を通つて送ら
れ、その一部が２次空気通路１２を通つて２次空
気噴射ノズル１０から炉内へ噴射される。 Further, the secondary air is sent through the secondary air supply pipe 9, and a part of it is injected into the furnace from the secondary air injection nozzle 10 through the secondary air passage 12.
一方濃度ｂの混合気は、１次空気、微粉燃料混
合気通路７を通り微粉燃料噴射ノズル８から炉内
へ噴射される。 On the other hand, the mixture having the concentration b passes through the primary air and pulverized fuel mixture passage 7 and is injected into the furnace from the pulverized fuel injection nozzle 8.
２次空気の一部は、２次空気通路１３を通つて
２次空気噴射ノズル１１から炉内へ噴射される。 A portion of the secondary air is injected into the furnace from the secondary air injection nozzle 11 through the secondary air passage 13.
また残余の２次空気は補助空気噴射ノズル１４
から炉内へ噴射される。 In addition, the remaining secondary air is sent to the auxiliary air injection nozzle 14.
is injected into the furnace.
かくして、第１の微粉燃料吹込コンパートメン
トにおける濃度ｃの１次空気、微粉燃料混合気と
２次空気とは、炉内で混合燃焼し、第３図のｃ点
で示される濃度のNOxを発生する。 Thus, the primary air at the concentration c in the first pulverized fuel injection compartment, the pulverized fuel mixture, and the secondary air mix and burn in the furnace, producing NOx at the concentration shown at point c in FIG. .
一方第２の微粉燃料吹込コンパートメントにお
ける濃度ｂの１次空気、微粉燃料混合気と２次空
気とは、炉内で混合燃焼し、第３図のｂ点で示さ
れる濃度のNOxを発生する。 On the other hand, the primary air at the concentration b, the pulverized fuel mixture, and the secondary air in the second pulverized fuel injection compartment are mixed and burned in the furnace to generate NOx at the concentration shown at point b in FIG. 3.
これらのNOx値は、濃度ａの微粉燃料をその
まま燃やす時のNOx値（第３図のａ点で示され
る）よりも低い。 These NOx values are lower than the NOx values (indicated by point a in FIG. 3) when pulverized fuel of concentration a is burned as is.
負荷を上げるためこの微粉燃料バーナを多段隣
接させて利用する際、同じ構成のものを単に多段
隣接させた場合、補助空気コンパートメントから
の空気と隣接のバーナの第２の微粉燃料吹込コン
パートメントからの混合気とが干渉するため
NOxの発生が高くなる現象が発生する。 When this pulverized fuel burner is used in adjacent stages to increase the load, if the same configuration is simply placed in adjacent stages, the air from the auxiliary air compartment is mixed with the air from the second pulverized fuel injection compartment of the adjacent burner. Because Qi interferes with
A phenomenon occurs in which NOx generation increases.
そのため、本発明は、微粉燃料バーナを多段隣
接して配置して微粉炭を燃焼させる方法におい
て、NOx低減を可能としてものを提供すること
を目的としてなされたものである。 Therefore, an object of the present invention is to provide a method of combusting pulverized coal by arranging pulverized fuel burners adjacent to each other in multiple stages, which enables NOx reduction.
次に本発明を第４図に示す一実施の態様例に基
づいて具体的に説明する。 Next, the present invention will be specifically explained based on an example of an embodiment shown in FIG.
微粉燃料供給管４１の下流端は微粉燃料分配器
４２に連結し、微粉燃料分配器４２の微粉燃料の
割合が多い出口側は、微粉燃料供給管４３を介し
て１次空気・微粉燃料混合気通路４４と連通して
いる。１次空気・微粉燃料混合気通路４４の下流
端に微粉燃料噴射ノズル４５が設けられている。
微粉燃料分配器４２の微粉燃料の割合が少ない出
口側は、微粉燃料供給管４６を介して１次空気・
微粉燃料混合気通路４７と連通している。１次空
気・微粉燃料混合気通路４７の下流端に微粉燃料
噴射ノズル４８が設けられている。２次空気送風
機は２次空気供給管４９と連結し、２次空気供給
管４９はさらに夫々の１次空気・微粉燃料混合気
通路４４，４７の周囲に形成され、下流端に２次
空気噴射ノズル５０，５１が設けられた２次空気
通路５２，５３と連通し、又補助空気ノズル５４
が設けられた補助空気通路５５と連通している。 The downstream end of the pulverized fuel supply pipe 41 is connected to a pulverized fuel distributor 42 , and the outlet side of the pulverized fuel distributor 42 where the proportion of pulverized fuel is high is connected to the primary air/pulverized fuel mixture via the pulverized fuel supply pipe 43 . It communicates with the passage 44. A pulverized fuel injection nozzle 45 is provided at the downstream end of the primary air/fine fuel mixture passage 44 .
The outlet side of the pulverized fuel distributor 42 where the proportion of pulverized fuel is small is supplied with primary air and air via the pulverized fuel supply pipe 46.
It communicates with the pulverized fuel mixture passage 47 . A pulverized fuel injection nozzle 48 is provided at the downstream end of the primary air/fine fuel mixture passage 47 . The secondary air blower is connected to a secondary air supply pipe 49, and the secondary air supply pipe 49 is further formed around each of the primary air/pulverized fuel mixture passages 44, 47, and has a secondary air injection pipe at the downstream end. It communicates with secondary air passages 52 and 53 provided with nozzles 50 and 51, and an auxiliary air nozzle 54.
It communicates with an auxiliary air passage 55 provided with.
微粉燃料噴射ノズル４５、１次空気・微粉燃料
混合気通路４４、２次空気通路５２、２次空気噴
射ノズル５０で第１の微粉燃料吹込コンパートメ
ントを形成し、微粉燃料噴射ノズル４８、１次空
気・微粉燃料混合気通路４７、２次空気通路５
３、２次空気噴射ノズル５１で第２の微粉燃料吹
込コンパートメントを形成し、補助空気通路５
５、補助空気噴射ノズル５４で補助空気コンパー
トメントを形成しており、これらの各コンパート
メントで第１の微粉燃料バーナが構成されてい
る。第１の微粉燃料バーナは、上部から下部へ第
２の微粉燃料吹込コンパートメント、第１の微粉
燃料吹込コンパートメント、補助空気コンパート
メントの順に配置されている。第１の微粉燃料バ
ーナと同様に第２の微粉燃料バーナが構成されて
いる。すなわち、微粉燃料供給管６１の下流端は
微粉燃料分配器６２に連結し、微粉燃料分配器６
２の微粉燃料の割合が多い出口側は、微粉燃料供
給管６３を介して１次空気・微粉燃料混合気通路
６４と連通している。１次空気・微粉燃料混合気
通路６４の下流端に微粉燃料噴射ノズル６５が設
けられている。微粉燃料分配器６２の微粉燃料の
割合が少ない出口側は、微粉燃料供給管６４を介
して１次空気・微粉燃料混合気通路６７と連通し
ている。１次空気・微粉燃料混合気通路６７の下
流端に微粉燃料噴射ノズル６８が設けられてい
る。２次空気供給管４９は夫々の１次空気・微粉
燃料混合気通路６４，６７の周囲に形成され、下
流端に２次空気噴射ノズル７０，７１が設けられ
た２次空気通路７２，７３と連通し、又補助空気
ノズル７４が設けられた補助空気通路７５と連通
している。 The pulverized fuel injection nozzle 45, the primary air/fine fuel mixture passage 44, the secondary air passage 52, and the secondary air injection nozzle 50 form a first pulverized fuel injection compartment, and the pulverized fuel injection nozzle 48, the primary air・Powdered fuel mixture passage 47, secondary air passage 5
3. A secondary air injection nozzle 51 forms a second pulverized fuel injection compartment, and an auxiliary air passage 5
5. Auxiliary air injection nozzles 54 form auxiliary air compartments, each of which constitutes a first pulverized fuel burner. The first pulverized fuel burner is arranged in order from top to bottom: a second pulverized fuel injection compartment, a first pulverized fuel injection compartment, and an auxiliary air compartment. A second pulverized fuel burner is configured similarly to the first pulverized fuel burner. That is, the downstream end of the pulverized fuel supply pipe 61 is connected to the pulverized fuel distributor 62, and the pulverized fuel distributor 6
The outlet side with a high proportion of pulverized fuel in No. 2 communicates with a primary air/pulverized fuel mixture passage 64 via a pulverized fuel supply pipe 63 . A pulverized fuel injection nozzle 65 is provided at the downstream end of the primary air/fine fuel mixture passage 64 . The outlet side of the pulverized fuel distributor 62 where the proportion of pulverized fuel is small is communicated with a primary air/pulverized fuel mixture passage 67 via a pulverized fuel supply pipe 64 . A pulverized fuel injection nozzle 68 is provided at the downstream end of the primary air/fine fuel mixture passage 67 . The secondary air supply pipe 49 is formed around each of the primary air/pulverized fuel mixture passages 64 and 67, and has secondary air passages 72 and 73 provided with secondary air injection nozzles 70 and 71 at their downstream ends. It also communicates with an auxiliary air passage 75 in which an auxiliary air nozzle 74 is provided.
第１の微粉燃料バーナと同様、微粉燃料噴射ノ
ズル６５、１次空気・微粉燃料混合気通路６４、
２次空気通路７２、２次空気噴射ノズル７０で第
１の微粉燃料吹込コンパートメントを形成し、微
粉燃料噴射ノズル６８、１次空気・微粉燃料混合
気通路６７、２次空気通路７３、２次空気噴射ノ
ズル７１で第２の微粉燃料吹込コンパートメント
を形成し、補助空気通路７５、補助空気噴射ノズ
ル７４で補助空気コンパートメントを形成してい
る。 Similar to the first pulverized fuel burner, a pulverized fuel injection nozzle 65, a primary air/pulverized fuel mixture passage 64,
A secondary air passage 72, a secondary air injection nozzle 70 form a first pulverized fuel injection compartment, a pulverized fuel injection nozzle 68, a primary air/pulverized fuel mixture passage 67, a secondary air passage 73, and a secondary air The injection nozzle 71 forms a second pulverized fuel injection compartment, and the auxiliary air passage 75 and the auxiliary air injection nozzle 74 form an auxiliary air compartment.
第２の微粉燃料バーナは第１の微粉燃料バーナ
の下部に隣接して配置されているが、隣接部分を
対称線として第１の微粉燃料バーナの各コンパー
トメントと第２の微粉燃料バーナの各コンパート
メントとが夫々対称となるよう、第２の微粉燃料
バーナは上部から下部へ順に補助空気コンパート
メント、第２の微粉燃料吹込コンパートメント、
第１の微粉燃料コンパートメントが配置されてい
る。 The second pulverized fuel burner is disposed adjacent to the lower part of the first pulverized fuel burner, with each compartment of the first pulverized fuel burner and each compartment of the second pulverized fuel burner having a line of symmetry about the adjacent portion. The second pulverized fuel burner has, from top to bottom, an auxiliary air compartment, a second pulverized fuel injection compartment,
A first pulverized fuel compartment is located.
隣接する微粉燃料バーナの補助空気コンパート
メント同志が隣接しているため相互干渉は補助空
気同志にとどまり各第１，第２の微粉燃料吹込コ
ンパートメントの微粉燃料噴流は炉内噴出の後、
相当長い距離の間、初期空気濃度ｂ、ｃを維持す
るのでNOxを著しく低減出来る。 Since the auxiliary air compartments of adjacent pulverized fuel burners are adjacent to each other, the mutual interference is limited to the auxiliary air, and the pulverized fuel jets of the first and second pulverized fuel injection compartments are ejected into the furnace.
Since the initial air concentrations b and c are maintained over a fairly long distance, NOx can be significantly reduced.
以下、本発明を１実施例に基づいて具体的に説
明したが、本発明は、この実施の態様例だけに限
定されるものではない。例えば、微粉燃料バーナ
は３つ以上隣接させてもよく、又、隣接も上下だ
けでなく、各コンパートメントを水平に配置し、
水平方向で隣接させてもよく、隣接するコンパー
トメントは、補助空気コンパートメントに限ら
ず、第１あるいは第２の微粉燃料吹込コンパート
メントであつてもよい。 Although the present invention has been specifically explained below based on one embodiment, the present invention is not limited to this embodiment. For example, three or more pulverized fuel burners may be placed adjacent to each other, and each compartment may be arranged horizontally, not just vertically.
They may be horizontally adjacent, and the adjacent compartments may be not only auxiliary air compartments but also first or second pulverized fuel injection compartments.
要は、本発明は、第１の微粉燃料吹込コンパー
トメント、第２の徴粉燃料吹込コンパートメン
ト、及び補助空気コンパートメントとからなる複
数の微粉燃料バーナから空気と微粉燃料とを炉内
に供給して燃焼させる微粉燃料燃焼方法におい
て、１次空気量と２次空気量との和が、１次空気
と混合して送られる微粉燃料中に含まれる揮発分
の理論燃焼空気量よりも少ない量で第１の微粉燃
料吹込コンパートメントから１次空気と微粉燃料
との混合体と２次空気とを炉内に供給し、１次空
気量と２次空気量との和が、１次空気と混合して
送られる微粉燃料中に含まれる揮発分の理論燃焼
空気量と略等しい量で第２の微粉燃料吹込コンパ
ートメントから１次空気と微粉燃料との混合体と
２次空気とを前記第１の微粉燃料吹込コンパート
メントから供給される混合体と２次空気に近接し
て炉内に供給し、補助空気を第１微粉燃料吹込コ
ンパートメントから供給される混合体と２次空気
に近接し、かつ第２の微粉燃料吹込コンパートメ
ントから供給される混合体と２次空気から離れて
炉内に供給し、隣接する微粉バーナから隣接部分
を対称線として同一種のものを対称に供給するこ
とを特徴とし、これにより、隣接部分で隣り合う
コンパートメントから噴出される混合気あるいは
空気は同一種のものとなり、相互干渉があつて
も、同一種の混合気あるいは空気が互いに干渉す
るため、空気と微粉燃料との混合気の割合が変化
することが防止でき、常に最適な状態で燃焼する
のでNOxの低減が計れるものである。 In short, the present invention provides combustion by supplying air and pulverized fuel into a furnace from a plurality of pulverized fuel burners each including a first pulverized fuel injection compartment, a second pulverized fuel injection compartment, and an auxiliary air compartment. In the pulverized fuel combustion method, the sum of the primary air amount and the secondary air amount is smaller than the theoretical combustion air amount of volatile matter contained in the pulverized fuel mixed with the primary air and sent. A mixture of primary air and pulverized fuel and secondary air are supplied into the furnace from the pulverized fuel injection compartment, and the sum of the amount of primary air and the amount of secondary air is mixed with the primary air and sent. A mixture of primary air and pulverized fuel and secondary air are injected into the first pulverized fuel from a second pulverized fuel injection compartment in an amount substantially equal to the theoretical combustion air amount of volatile matter contained in the pulverized fuel. supplying auxiliary air into the furnace in close proximity to the mixture and secondary air supplied from the first pulverized fuel injection compartment; It is characterized in that the mixture and secondary air supplied from the blowing compartment are supplied into the furnace separately from each other, and the same kind is supplied symmetrically from adjacent fine powder burners with the adjacent parts as a line of symmetry, thereby making it possible to The mixture or air ejected from adjacent compartments will be of the same type, and even if there is mutual interference, the mixture or air of the same type will interfere with each other, so the ratio of the mixture of air and pulverized fuel will decrease. It is possible to prevent NOx from changing and to always burn in the optimum condition, reducing NOx.
第１図は微粉燃料バーナを示す図、第２図は第
１図中−矢視図、第３図は、１次空気と微粉
燃料量の比率におけるNOx発生割合を示すグラ
フ、第４図は本発明の１実施の態様例を示す図で
ある。
１，３，６，４１，４３，４６，６１，６３，
６６……微粉燃料供給管、２，４２，６２，……
微粉燃料分配器、４，７，４４，４７，６４，６
７……１次空気・微粉燃料混合気通路、５，８，
４５，４８，６５，６８……微粉燃料噴射ノズ
ル、９，４９……２次空気供給管、１２，１３，
５２，５３，７２，７３……２次空気通路、１
０，１１，５０，５１，７０，７１……２次空気
噴射ノズル、１４，５４，７４……補助空気噴射
ノズル、１５，５５，７５……補助空気通路。
Figure 1 is a diagram showing a pulverized fuel burner, Figure 2 is a view taken from the direction of the arrow in Figure 1, Figure 3 is a graph showing the NOx generation rate based on the ratio of primary air and pulverized fuel, and Figure 4 is FIG. 1 is a diagram showing an example of an embodiment of the present invention. 1, 3, 6, 41, 43, 46, 61, 63,
66...Powdered fuel supply pipe, 2, 42, 62,...
Pulverized fuel distributor, 4, 7, 44, 47, 64, 6
7...Primary air/fine fuel mixture passage, 5, 8,
45, 48, 65, 68...Powdered fuel injection nozzle, 9,49...Secondary air supply pipe, 12,13,
52, 53, 72, 73...Secondary air passage, 1
0, 11, 50, 51, 70, 71... Secondary air injection nozzle, 14, 54, 74... Auxiliary air injection nozzle, 15, 55, 75... Auxiliary air passage.
Claims (1)
の微粉燃料吹込コンパートメント、及び補助空気
コンパートメントとからなる複数の微粉燃料バー
ナから空気と微粉燃料とを炉内に供給して燃焼さ
せる微粉燃料燃焼方法において、１次空気量と２
次空気量との和が、該１次空気と混合して送られ
る微粉燃料中に含まれる揮発分の理論燃焼空気量
よりも少ない量で前記第１の微粉燃料吹込コンパ
ートメントから前記１次空気と微粉燃料との混合
体と２次空気とを炉内に供給し、１次空気量と２
次空気量との和が、該１次空気と混合して送られ
る微粉燃料中に含まれる揮発分の理論燃焼空気量
と略等しい量で前記第２の微粉燃料吹込コンパー
トメントから前記１次空気と微粉燃料との混合体
と２次空気とを前記第１の微粉燃料吹込コンパー
トメントから供給される混合体と２次空気に近接
して炉内に供給し、補助空気を前記第１の微粉燃
料吹込コンパートメントから供給される混合体と
２次空気に近接し、かつ前記第２の微粉燃料吹込
コンパートメントから供給される混合体と２次空
気から離れて炉内に供給し、隣接する前記微粉燃
料バーナから隣接部分を対称線として同一種のも
のを対称に供給することを特徴とする微粉燃料燃
焼方法。1 first pulverized fuel injection compartment, second
In a pulverized fuel combustion method in which air and pulverized fuel are supplied into a furnace from a plurality of pulverized fuel burners comprising a pulverized fuel injection compartment and an auxiliary air compartment for combustion, the amount of primary air and
The primary air from the first pulverized fuel injection compartment is The mixture with pulverized fuel and secondary air are supplied into the furnace, and the amount of primary air and secondary air are
The primary air from the second pulverized fuel injection compartment is approximately equal to the theoretical combustion air amount of volatile matter contained in the pulverized fuel mixed with the primary air and sent. A mixture of pulverized fuel and secondary air is supplied into the furnace in close proximity to the mixture and secondary air supplied from the first pulverized fuel injection compartment, and auxiliary air is supplied to the first pulverized fuel injection compartment. feeding into the furnace adjacent to the mixture and secondary air supplied from the second pulverized fuel blowing compartment and away from the mixture and secondary air supplied from the second pulverized fuel blowing compartment, and from the adjacent pulverized fuel burner; A pulverized fuel combustion method characterized by supplying the same type of fuel symmetrically with adjacent parts as a line of symmetry.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10023580A JPS5726309A (en) | 1980-07-22 | 1980-07-22 | Combustion apparatus for fines fuel |
| GB8111282A GB2076135B (en) | 1980-04-22 | 1981-04-10 | Pulverized fuel firing apparatus |
| CA000375365A CA1152814A (en) | 1980-04-22 | 1981-04-13 | Pulverized fuel firing apparatus |
| FR8108014A FR2480906A1 (en) | 1980-04-22 | 1981-04-22 | APPARATUS FOR BURNING PULVERIZED FUEL |
| DE3116376A DE3116376C3 (en) | 1980-04-22 | 1981-04-22 | Solid fuel dust burner |
| US06/777,878 US4669398A (en) | 1980-04-22 | 1985-09-20 | Pulverized fuel firing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10023580A JPS5726309A (en) | 1980-07-22 | 1980-07-22 | Combustion apparatus for fines fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5726309A JPS5726309A (en) | 1982-02-12 |
| JPS6219645B2 true JPS6219645B2 (en) | 1987-04-30 |
Family
ID=14268594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10023580A Granted JPS5726309A (en) | 1980-04-22 | 1980-07-22 | Combustion apparatus for fines fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5726309A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5984967A (en) * | 1982-11-08 | 1984-05-16 | Toray Ind Inc | Polyester-based adhesive |
| JPS59115904A (en) * | 1982-12-23 | 1984-07-04 | Hitachi Ltd | Combustion of pulverized coal |
| JPH0443687Y2 (en) * | 1985-12-26 | 1992-10-15 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543925A (en) * | 1977-06-10 | 1979-01-12 | Mitsubishi Heavy Ind Ltd | Solid fuel combustion |
-
1980
- 1980-07-22 JP JP10023580A patent/JPS5726309A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543925A (en) * | 1977-06-10 | 1979-01-12 | Mitsubishi Heavy Ind Ltd | Solid fuel combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5726309A (en) | 1982-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4669398A (en) | Pulverized fuel firing apparatus | |
| JPS55165405A (en) | Combustion method with reduced amount of nitrogen oxide | |
| JPS62276310A (en) | Burner for low nox combustion | |
| US6196831B1 (en) | Combustion process for burning a fuel | |
| US3976420A (en) | Method and apparatus for burning fuels | |
| JP2540636B2 (en) | boiler | |
| US4515094A (en) | Fuel jet method and apparatus for pulverized coal burner | |
| RU94045164A (en) | Low-emission swirling-type furnace | |
| JPS6219645B2 (en) | ||
| JPH08121711A (en) | Pulverized coal combsition method and pulverized coal combustion device and pulverized coal burner | |
| JPH036403B2 (en) | ||
| JPS6219646B2 (en) | ||
| JPH0116885Y2 (en) | ||
| JP2647461B2 (en) | Thermal baking equipment | |
| JPS6210321B2 (en) | ||
| JPH0229369Y2 (en) | ||
| JPH0613923B2 (en) | Combustion method for fine powdered solid fuel | |
| KR100231974B1 (en) | Two stage nozzle for reducing nox | |
| KR100253994B1 (en) | Two stage low nox nozzle with the same spray angle | |
| JPS58102006A (en) | Low nox pulverized coal burner | |
| JPH02298703A (en) | Pulverized coal burner | |
| KR100253993B1 (en) | Two stage nozzle for low nox products | |
| JPS60133205A (en) | Low nox burning method | |
| JPH0140969Y2 (en) | ||
| JPS60218505A (en) | Burner |