JPH0455635B2 - - Google Patents
Info
- Publication number
- JPH0455635B2 JPH0455635B2 JP29873386A JP29873386A JPH0455635B2 JP H0455635 B2 JPH0455635 B2 JP H0455635B2 JP 29873386 A JP29873386 A JP 29873386A JP 29873386 A JP29873386 A JP 29873386A JP H0455635 B2 JPH0455635 B2 JP H0455635B2
- Authority
- JP
- Japan
- Prior art keywords
- pulverized coal
- tip
- differential pressure
- gasifying agent
- burner
- 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
- 239000003245 coal Substances 0.000 claims description 68
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 239000004449 solid propellant Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 8
- 239000012159 carrier gas Substances 0.000 claims description 2
- 238000002309 gasification Methods 0.000 description 20
- 238000000034 method Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、噴流層固形燃料ガス化装置に係り、
特に、粉末固形燃料（石炭）をガス化剤とともに
径の小さなバーナノズルから負荷変動にかかわら
ず最適噴出速度を一定に維持でき容易に調節する
ことができる固形燃料噴出バーナに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spouted bed solid fuel gasification device,
In particular, the present invention relates to a solid fuel injection burner that can maintain and easily adjust the optimum injection speed of powdered solid fuel (coal) together with a gasifying agent from a small-diameter burner nozzle regardless of load fluctuations.
石炭は化石燃料資源の中で埋蔵量が最大であり
石油代替エネルギーとして注目されている。
Coal has the largest reserves among fossil fuel resources and is attracting attention as an energy alternative to oil.
石炭は、固体で取り扱いが不便な上、灰分、硫
黄、窒素等を含有しており有効利用するためには
液化、ガス化等によりクリーンなエネルギー源に
変換して利用することが望まれる。現在、石炭の
クリーン燃料化の有力な方法として石炭ガス化が
注目されている。その中でも石炭からのクリーン
ガスを発電に用いる石炭ガス化複合発電方式が注
目されている。石炭ガス化複合発電方式を支える
重要技術の一つは石炭ガス化技術であり、発電用
ガス化炉に対しては、高いガス化効率、電力需要
に対応できる運転性及び信頼性、幅広い炭種に対
する適用性等が要求される。これらを満足させる
には、微粉炭を気流中で反応させる噴出層ガス化
炉が有望である。噴流層ガス化炉の開発は、米国
において、最初に研究され我国においても研究か
ら実用化の段階に移りつつある。これらはいずれ
も規模が小さい。そして昭和55年ごろから大容
量、高性能噴流層ガス化炉の必要性が再認識され
た。 Coal is solid and inconvenient to handle, and it also contains ash, sulfur, nitrogen, etc., and in order to be used effectively, it is desirable to convert it into a clean energy source through liquefaction, gasification, etc. Coal gasification is currently attracting attention as a promising method for turning coal into a clean fuel. Among these, the coal gasification combined cycle system, which uses clean gas from coal for power generation, is attracting attention. One of the key technologies supporting the coal gasification combined cycle system is coal gasification technology, and gasifiers for power generation require high gasification efficiency, operability and reliability that can meet electricity demand, and a wide range of coal types. Applicability to, etc. is required. In order to satisfy these requirements, an eruption bed gasifier that reacts pulverized coal in an air stream is promising. The development of spouted bed gasifiers was first studied in the United States, and is now moving from research to the stage of practical application in Japan as well. All of these are small scale. Then, around 1981, the need for large-capacity, high-performance spouted bed gasifiers was reaffirmed.
これらに用いられているガス化炉の効率を向上
させる手段として、大半が固形燃料をできるだけ
炉内に滞留させ、ガス化反応に促進させることを
主眼としている。このためバーナの設置位置、角
度及び構造等につきホツトガス化炉を模擬したコ
ールドモデルで粒子滞留時間をそれぞれ測定する
とともに炉内の固形燃料の流れ解析を実施して炉
構造を決定している。 Most of the methods for improving the efficiency of the gasifiers used in these systems are aimed at retaining as much solid fuel as possible in the furnace and accelerating the gasification reaction. For this reason, the furnace structure is determined by measuring the particle residence time using a cold model simulating a hot gasifier with respect to the burner installation position, angle, structure, etc., as well as analyzing the flow of solid fuel in the furnace.
その中でも、粒子の滞留時間に及ぼすバーナノ
ズル噴出速度の影響によいて検討した結果、第４
図のように噴出速度が早くなるに従つてガス相互
の干渉が激しくなり旋回力が強くなることから、
粒子の滞留時間が長くなる。このことから負荷変
動時もある一定の噴出速度以上に維持することが
前記理由から必要不可欠である。 Among them, the fourth
As shown in the figure, as the ejection speed increases, the mutual interference between the gases becomes more intense and the swirling force becomes stronger.
Particle residence time increases. For this reason, it is essential to maintain the ejection speed above a certain level even during load fluctuations.
以上のことから、固形燃料のガス化を炉全体で
促進させるには、負荷変動にかかわらずバーナの
ガス噴出速度を一定に維持できかつ自由に調節で
きるノズル構造であることが重要である。 From the above, in order to promote the gasification of solid fuel throughout the furnace, it is important to have a nozzle structure that can maintain the gas ejection speed of the burner constant and freely adjust it regardless of load fluctuations.
従来、バーナ噴出速度を調節する方法を類別す
ると基本的には２種類になる。 Conventionally, there are basically two types of methods for adjusting the burner jet speed.
１）機械的に微粉炭ノズル出口及びガス化剤出
口径を調節し、噴出速度を調節する方法（特開昭
54−94126号、特開昭55−17060号、特開昭58−
213089号）、２）燃料搬送用ガス及びガス化剤量
を調節することより噴出速度を調節する方法等が
ある。 1) A method of mechanically adjusting the diameter of the pulverized coal nozzle outlet and gasifying agent outlet to adjust the jetting speed (Japanese Patent Laid-Open No.
No. 54-94126, JP-A-55-17060, JP-A-58-
213089), 2) A method of adjusting the ejection speed by adjusting the amount of fuel conveying gas and gasifying agent.
(1)の方法の代表的な例として第５図に示した。 A typical example of method (1) is shown in Figure 5.
第５図に示した噴出速度の調節方法は、微粉炭
供給管６内に微粉炭及びガス化剤の出口径８を調
節するために、噴出速度調節用駆動機構１、連結
棒２及び出口間隙調節部３を設置し、負荷が変動
した際に１を作動させ、８の径を設定することに
より噴出速度を調節するものである。この方法の
利点は、機械的に微粉炭及びガス化剤の出口径８
を設定するため、正確に噴出速度を決定すること
ができる。 The method for adjusting the jetting speed shown in FIG. An adjustment part 3 is installed, and when the load fluctuates, the ejection speed is adjusted by activating part 1 and setting the diameter of part 8. The advantage of this method is that the outlet diameter of the pulverized coal and gasifying agent is 8
, the ejection speed can be determined accurately.
(2)の方法の利点は、機構が簡単で操作が容易で
ある。 The advantage of method (2) is that the mechanism is simple and easy to operate.
固形燃料のガス化は、一般に搬送気体の量を低
減させる必要があり、このため、混相流の粉末固
形燃料の密度が高くなる。したがつて、(1)中の特
開昭54−94126号を用いると微粉炭等が高速流で
あたるため出口間隙調節部３が摩耗することが考
えられる。また、燃料供給管６内に連結棒２を捜
入しているため、粉末固形燃料の供給自体に影響
を及ぼし供給管６内で粉末固形燃料が堆積した
り、８出口で閉塞する欠点がある。また、特開昭
58−213089号では、合成ガスの消費量が低い場合
には、燃料供給管（中間管）及び燃料供給管内に
設置しているガス化剤供給管（内側管）を最適な
ガス化ができるように適当に前方に変位させる。
また、消費量が高い場合には、両管を引くことに
より、環状間隙を大きくし、物質流量を広い限度
内で高めるようにしている。しかし、この構造で
はその環形間隙等を設定する機構が設置されてな
く、その調節が非常に困難である。
Gasification of solid fuels generally requires a reduction in the amount of carrier gas, which increases the density of the powdered solid fuel in the multiphase flow. Therefore, if JP-A No. 54-94126 in (1) is used, the outlet gap adjustment section 3 may be worn out because pulverized coal or the like hits it in a high-speed flow. In addition, since the connecting rod 2 is inserted into the fuel supply pipe 6, it affects the supply of powdered solid fuel itself, resulting in the accumulation of powdered solid fuel in the supply pipe 6 and the drawback that the outlet 8 may be blocked. . Also, Tokukai Akira
No. 58-213089 states that when the consumption of synthesis gas is low, the fuel supply pipe (middle pipe) and the gasifying agent supply pipe (inner pipe) installed inside the fuel supply pipe are designed to optimize gasification. Displace it appropriately forward.
In the case of high consumption, the annular gap is also enlarged by pulling both tubes in order to increase the material flow rate within wide limits. However, this structure does not include a mechanism for setting the annular gap, etc., and adjustment thereof is extremely difficult.
(2)の方法では、負荷変動に応じて噴出速度を容
易に変えることはできるが、前記のように炉内で
の粒子の滞留時間を長く保つには、バーナの噴出
速度をある一定噴出速度以上に保つように調節す
ることが必要である。また、スラグ化を促進する
ためにも高温化が必要である。負荷が低くなると
搬送用ガス（窒素又は空気）等を多量に供給する
ため炉内温度が低下することが考えられるため、
この二つを満足することは(2)の方法では困難であ
る。 In method (2), the ejection speed can be easily changed according to load fluctuations, but as mentioned above, in order to maintain the residence time of particles in the furnace for a long time, the ejection speed of the burner must be set at a constant ejection speed. It is necessary to make adjustments to maintain this level. In addition, high temperature is necessary to promote slag formation. When the load decreases, the temperature inside the furnace may drop due to the supply of a large amount of transport gas (nitrogen or air), etc.
It is difficult to satisfy these two requirements using method (2).
本発明の目的は、粉末固形燃料を径の小さなバ
ーナノズルから負荷変動にかかわらずバーナ噴出
速度を一定に維持できかつ容易に調節することが
できる好適な粉末固形燃料噴出バーナを提供する
にある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a suitable powder solid fuel injection burner that can maintain a constant burner injection speed and easily adjust the burner injection speed regardless of load fluctuations from a small-diameter burner nozzle.
上記目的は、負荷変動にかかわらずバーナガス
化剤供給口とガス化炉との差圧を検知し、それに
対応して微粉炭ノズル自体を軸方向に移動させる
駆動機構を作動させ、外筒管先端内壁出口と微粉
炭ノズル先端外壁出口との間の環状間隙を調節す
ることにより、前記欠点を克服し最適噴出速度を
一定に維持させかつ容易に調節できる構造とした
ものである。
The above purpose is to detect the differential pressure between the burner gasification agent supply port and the gasification furnace regardless of load fluctuations, operate the drive mechanism that moves the pulverized coal nozzle itself in the axial direction in response, and By adjusting the annular gap between the inner wall outlet and the outer wall outlet at the tip of the pulverized coal nozzle, the above-mentioned drawbacks can be overcome and the optimal jetting speed can be maintained constant and easily adjusted.
微粉炭ノズルを軸方向に移動することによつて
微粉炭ノズル先端外壁出口と外筒管先端内壁出口
との間の環状間〓を調節できるようにするため
に、ノズル先端外壁出口の形状と外筒管先端内壁
出口に形状とを同一形状にし、具体的には半球状
にする。 In order to be able to adjust the annular distance between the pulverized coal nozzle tip outer wall outlet and the outer cylindrical tube tip inner wall outlet by moving the pulverized coal nozzle in the axial direction, the shape and outer diameter of the nozzle tip outer wall outlet are adjusted. The shape is the same as that of the inner wall outlet at the tip of the cylindrical pipe, specifically, a hemispherical shape.
すなわち、バーナガス化剤入口とガス化炉との
間に差圧検出器を設置して、バーナ内のガス化剤
供給口とガス化炉との間の差圧を検出することに
より、最適噴出速度時での差圧を把握しこの時の
差圧を基準にして、負荷が変わつた時に微粉炭供
給管とガス化剤供給管の接続部に設置している駆
動機構を作動させ微粉炭ノズルを軸方向に移動す
ることにより、微粉炭ノズル先端出口外壁部と外
筒管先端内壁部の環状間隙を調節し、噴出速度を
一定に維持するとともに容易に調節できるように
したものである。
In other words, by installing a differential pressure detector between the burner gasifier inlet and the gasifier, and detecting the differential pressure between the gasifier supply port in the burner and the gasifier, the optimum injection speed can be determined. Based on the differential pressure at this time, the drive mechanism installed at the connection between the pulverized coal supply pipe and the gasifying agent supply pipe is activated to operate the pulverized coal nozzle when the load changes. By moving in the axial direction, the annular gap between the outer wall of the pulverized coal nozzle tip outlet and the inner wall of the tip of the outer cylindrical tube is adjusted, and the ejection speed can be maintained constant and easily adjusted.
本発明は、粉末固形燃料を高圧のガス化炉内に
供給する場合に本発明を適用したものである。
The present invention applies the present invention to the case where powdered solid fuel is supplied into a high-pressure gasifier.
本発明を第１図に従つて説明する。全体は、噴
出速度調節用駆動機構１、外筒管（又は冷却管）
１５、ガス化剤供給管１６、微粉炭吹込みノズル
５，６，７，８より成る。バーナ全体は三重管構
造となつており、冷却水流通ライン１４を通る冷
却水入口１２、出口１３によつて冷却される。 The present invention will be explained with reference to FIG. The whole includes a drive mechanism 1 for adjusting the jetting speed, an outer cylinder pipe (or cooling pipe)
15, gasifying agent supply pipe 16, and pulverized coal injection nozzles 5, 6, 7, and 8. The entire burner has a triple tube structure and is cooled by a cooling water inlet 12 and an outlet 13 passing through a cooling water distribution line 14.
微粉炭吹込みノズル５，６，７，８は微粉炭流
通ライン５、微粉炭供給管６、微粉炭ノズル７、
微粉炭ノズル出口８′で構成されている。 The pulverized coal injection nozzles 5, 6, 7, and 8 are a pulverized coal distribution line 5, a pulverized coal supply pipe 6, a pulverized coal nozzle 7,
It consists of a pulverized coal nozzle outlet 8'.
微粉炭ノズル７の形状は、半球状１７で、微粉
炭流通孔２０は微粉炭流通ライン５と同径とす
る。また、微粉炭ノズル７の先端部は通常外筒管
先端１５よりも炉内側に突き出している構造であ
る。この構造とすることにより、ガス化剤流通出
口１１の間隙が明確になると同時により最適な噴
出速度を調節できるようになる。この７の材質
は、1800℃まで耐熱可能なセラミツクを採用する
ことにより、ガス化炉側への捜入を容易とした。 The pulverized coal nozzle 7 has a hemispherical shape 17, and the pulverized coal distribution hole 20 has the same diameter as the pulverized coal distribution line 5. Further, the tip of the pulverized coal nozzle 7 normally projects further into the furnace than the tip 15 of the outer cylindrical tube. With this structure, the gap between the gasifying agent flow outlets 11 becomes clear, and at the same time, it becomes possible to adjust a more optimal jetting speed. The material of item 7 is ceramic, which can withstand temperatures up to 1800°C, making it easier to penetrate into the gasifier.
ガイ化剤供給ノズル９，１０，１１，１６，１
９，２１は、ガス化剤供給口９、差圧検出器２
１、ガス化剤供給管１６、ガス化剤流通ライン１
０、環状間隙１９及びガス化剤流通出口孔１１か
ら構成される。差圧検出器２１は、９部（又は１
９部）とガス化炉との差圧を検出し、ある一定の
差圧低下になると（最適噴出速度時での差圧を基
準）１を作動させるために設置したものである。
これにより負荷変動にかかわらず、最適噴出速度
を一定に維持できかつ容易に調節できることがで
きる。また、１８は微粉炭ノズル７の１７の形状
と同様にし、１７との環状間隙１９と同じになる
ような構造とする。 Gelling agent supply nozzle 9, 10, 11, 16, 1
9 and 21 are a gasifying agent supply port 9 and a differential pressure detector 2
1, gasifying agent supply pipe 16, gasifying agent distribution line 1
0, an annular gap 19 and a gasifying agent flow outlet hole 11. The differential pressure detector 21 has 9 parts (or 1
9) and the gasifier, and when the differential pressure decreases to a certain level (based on the differential pressure at the optimum injection speed), the unit 1 is activated.
As a result, the optimal jetting speed can be maintained constant and easily adjusted regardless of load fluctuations. Further, 18 has the same shape as 17 of the pulverized coal nozzle 7, and has a structure so that the annular gap 19 between it and 17 is the same.
微粉炭は搬送用ガスとの混相流として微粉炭流
通ライン５に運ばれ、微粉炭供給管６を通つて微
粉炭ノズル７の微粉炭出口孔８′から流出する。 The pulverized coal is conveyed to the pulverized coal distribution line 5 as a multiphase flow with the conveying gas, passes through the pulverized coal supply pipe 6, and flows out from the pulverized coal outlet hole 8' of the pulverized coal nozzle 7.
ガス化剤（空気又は酸素）は９からノズル内に
導入され、ガス化剤流通ライン１０を通り１１か
ら噴出する。このガス化剤と８′から噴出した微
粉炭が外部接触しガス化する。以上のように、微
粉炭ノズル外壁部と外筒管内壁部を半球状とした
のは、微粉炭ノズル化剤との接触をより激しくか
つ瞬間的に反応させるためである。このことによ
り効率も他構造のノズルよりも高くなる。 A gasifying agent (air or oxygen) is introduced into the nozzle from 9, passes through a gasifying agent distribution line 10, and is ejected from 11. This gasifying agent and the pulverized coal ejected from 8' come into contact with the outside and are gasified. As described above, the reason why the outer wall of the pulverized coal nozzle and the inner wall of the outer tube are made into a hemispherical shape is to make the contact with the pulverized coal nozzling agent react more vigorously and instantaneously. This also results in higher efficiency than nozzles with other structures.
しかし、負荷量が100％から70％に低下した場
合、バーナ噴出速度も70％に減少する。したがつ
て噴出速度が変動するとガス化炉内の粒子の流れ
状態に影響し、バーナ相互の干渉が弱まり旋回力
も低下することから粒子が飛散しやすくなり粒子
の滞留時間が短くなる。よつてガス化効率も低下
する。 However, when the load decreases from 100% to 70%, the burner jetting speed also decreases to 70%. Therefore, when the ejection speed fluctuates, it affects the flow state of particles in the gasifier, and the interference between the burners weakens and the swirling force also decreases, making it easier for the particles to scatter and shortening the residence time of the particles. Therefore, gasification efficiency also decreases.
そこで、バーナ噴出速度を調節する方法として
ガス化剤出口孔１１の間〓を調節することを考え
微粉炭供給管６とガス化剤供給管１６の接続部に
微粉炭供給管６を軸方向に移動可能な駆動機構１
を設置した。 Therefore, we considered adjusting the distance between the gasifying agent outlet holes 11 as a method of adjusting the burner jetting speed. Movable drive mechanism 1
was installed.
以上のことから、バーナのガス化剤供給口とガ
ス化炉との間に差圧検出器２１を設置し、バーナ
のガス化剤供給口とガス化炉との間の差圧を検出
し、最適噴出速度時での差圧を基準にこの差圧以
下になると駆動機構１を作動させガス化剤出口径
を自動的に設定することにより、前記欠点もなく
なり噴出速度を一定に維持でき、かつ容易に調節
することが可能になる。 From the above, a differential pressure detector 21 is installed between the gasifying agent supply port of the burner and the gasifying furnace to detect the differential pressure between the gasifying agent supply port of the burner and the gasifying furnace, By operating the drive mechanism 1 and automatically setting the gasifying agent outlet diameter when the differential pressure falls below this differential pressure based on the differential pressure at the optimum ejecting speed, the above-mentioned drawbacks can be eliminated and the ejecting speed can be maintained constant, and It can be easily adjusted.
第２図は本発明第１図に追随する構造のもので
ある。 FIG. 2 shows a structure that follows the structure shown in FIG. 1 of the present invention.
粉末固形燃料バーナは三重構造とし、外筒管に
は冷却水を流通した。この材質はステンレス製で
微粉炭ノズル７をセラミツクで製作した。各部の
寸法は、バーナの外径φ34、長さ500mmでガス化
剤出口径はφ10、微粉炭ノズル７の外壁部の半球
状径をφ16とした。微粉炭供給管及び微粉炭ノズ
ルの内径はφ4とした。ガス化剤供給ライン１６
内の径をφ21とした。また、バーナのガス化剤供
給口とガス化炉との間に差圧検出器を設置し、そ
の差圧に対応して駆動機構が作動するようにし
た。 The powdered solid fuel burner had a triple structure, and cooling water was passed through the outer tube. This material was made of stainless steel, and the pulverized coal nozzle 7 was made of ceramic. The dimensions of each part were that the burner had an outer diameter of φ34, a length of 500 mm, a gasifying agent outlet diameter of φ10, and a hemispherical diameter of the outer wall of the pulverized coal nozzle 7 of φ16. The inner diameter of the pulverized coal supply pipe and pulverized coal nozzle was φ4. Gasification agent supply line 16
The inner diameter was set to φ21. Additionally, a differential pressure detector was installed between the gasifying agent supply port of the burner and the gasifier, and the drive mechanism was activated in response to the differential pressure.
微粉炭の搬送条件は、搬送ガス量４Kg／ｈ、分
配ガス量６Kg／ｈ、微粉炭供給量20Kg／ｈであ
る。バーナはガス化炉反応部上段に接線方向に４
本設置した。 The conditions for conveying the pulverized coal are a conveying gas amount of 4 kg/h, a distribution gas amount of 6 kg/h, and a pulverized coal supply amount of 20 kg/h. Four burners are installed tangentially to the upper stage of the gasifier reaction section.
The book was installed.
ガス化剤には空気を用い、空気供給量と微粉炭
供給量の比（以下Ari／Coalと称す）が４となる
ように80Kg／ｈで供給した。試験圧力は４Kg／cm2
Ｇで行つた。 Air was used as the gasifying agent and was supplied at a rate of 80 kg/h so that the ratio of the air supply amount to the pulverized coal supply amount (hereinafter referred to as Ari/Coal) was 4. Test pressure is 4Kg/cm 2
I went with G.
この条件での噴出速度は44ｍ／ｓ（最適噴出速
度とする）で、ガス化炉内の粒子の滞留時間は第
１図から推定すると７秒程度である。またこの時
のバーナ内ガス化剤出口とガス化炉との間の差圧
は0.5Kg／cm2Ｇであつた。この圧力を基準にして、
Air／Coalを一定にして負荷量（微粉炭供給量10
Kg／ｈ）を50％下げると噴出速度は22ｍ／ｓと半
分になるとともにガス化剤出口圧力も0.25Kg／cm2
Ｇになつた。そこでガス化剤出口とガス化炉の差
圧が0.5Kg／cm2Ｇになるように本発明の駆動機構
を作動させると微粉炭ノズルが軸方向に移動し、
環状空間が２mmから１mmに縮まり、噴出速度も44
ｍ／ｓになつた。 The ejection speed under these conditions is 44 m/s (optimum ejection speed), and the residence time of the particles in the gasifier is estimated from Figure 1 to be about 7 seconds. Further, the differential pressure between the outlet of the gasifying agent in the burner and the gasifying furnace at this time was 0.5 Kg/cm 2 G. Based on this pressure,
Load amount (pulverized coal supply amount 10
If Kg/h) is lowered by 50%, the jetting speed will be halved to 22 m/s, and the gasifier outlet pressure will also be 0.25 Kg/cm 2
I became G. Therefore, when the drive mechanism of the present invention is operated so that the differential pressure between the gasification agent outlet and the gasification furnace becomes 0.5Kg/cm 2 G, the pulverized coal nozzle moves in the axial direction,
The annular space has been reduced from 2mm to 1mm, and the ejection speed has also been increased to 44
It became m/s.
このことにより、ガス化効率も最初の条件とさ
ほど変わらない結果が得られた。 As a result, results were obtained in which the gasification efficiency was not significantly different from the initial conditions.
その実験結果を従来のバーナ使用時での結果と
合わせて示したのが第３図である。 FIG. 3 shows the experimental results together with the results when using a conventional burner.
本発明によれば、バーナノズル噴出速度を正確
に決定することができ、負荷変動にかかわらず最
適噴出速度を一定に維持できるとともに容易に調
節することができる効果を有する。
According to the present invention, the burner nozzle ejection speed can be accurately determined, and the optimum ejection speed can be maintained constant regardless of load fluctuations and can be easily adjusted.
第１図は本発明の固体燃料噴出バーナの詳細
図、第２図は第１図に追随する固体燃料噴出バー
ナの詳細図、第３図は本発明バーナ使用と従来バ
ーナ使用時でのガス化特性図、第４図は粒子の滞
留時間に及ぼすバーナ噴出速度の影響、第５図
は、従来のバーナ噴出速度調節器付固体燃料噴出
バーナの詳細図である。
１…噴出速度調節用駆動機構、２…連結棒、３
…出口間隙調節部、４…微粉炭捜入口、５…微粉
炭流通ライン、６…微粉炭供給管、７…微粉炭ノ
ズル、８…微粉炭及びガス化剤出口、８′…微粉
炭出口、９…ガス化剤供給口、１０…ガス化剤流
通ライン、１１…ガス化剤流通出口、１２…冷却
水入口、１３…冷却水出口、１４…冷却水流通ラ
イン、１５…外筒管（又は冷却管）、１６…ガス
化剤供給管、１７…微粉炭ノズル外壁半球状部、
１８…外筒管先端内壁半球状部、１９…環状間
隙、２０…微粉炭流通孔、２１…差圧検出器、２
２…ガス化炉。
Figure 1 is a detailed view of the solid fuel injection burner of the present invention, Figure 2 is a detailed view of the solid fuel injection burner following Figure 1, and Figure 3 is gasification using the present burner and the conventional burner. A characteristic diagram, FIG. 4 shows the influence of burner jetting speed on the residence time of particles, and FIG. 5 shows a detailed diagram of a conventional solid fuel jetting burner with a burner jetting speed regulator. 1... Drive mechanism for adjusting jetting speed, 2... Connecting rod, 3
... Outlet gap adjustment section, 4... Pulverized coal search port, 5... Pulverized coal distribution line, 6... Pulverized coal supply pipe, 7... Pulverized coal nozzle, 8... Pulverized coal and gasification agent outlet, 8'... Pulverized coal outlet, 9...Gasifying agent supply port, 10...Gasifying agent distribution line, 11...Gasifying agent distribution outlet, 12...Cooling water inlet, 13...Cooling water outlet, 14...Cooling water distribution line, 15...Outer cylinder pipe (or cooling pipe), 16... gasifying agent supply pipe, 17... pulverized coal nozzle outer wall hemispherical part,
18... Hemispherical part of the inner wall at the tip of the outer cylindrical tube, 19... Annular gap, 20... Pulverized coal flow hole, 21... Differential pressure detector, 2
2...Gasifier.
Claims (1)
微粉炭供給管の先端に微粉炭ノズルを有し、該微
粉炭ノズルの先端外壁部形状を半球状となし、該
微粉炭供給管と同軸に二重管構造をした外筒管を
有し、該外筒管の先端内壁部形状を前記微粉炭ノ
ズルの先端外壁部形状と同一の半球状となし、該
外筒管と前記微粉炭供給管との間にガス化剤を供
給するガス化剤供給口及び前記二重管構造の外筒
管の内部に冷却水を循環させる冷却水供給口を前
記外筒管に備えた固形燃料噴出バーナであつて、
前記ガス化剤供給口とガス化炉との差圧を検出す
る差圧検知器を備え、該差圧検知器の差圧に応じ
て前記微粉炭供給管を軸方向に移動して前記外筒
管先端内壁出口と前記微粉炭ノズル先端外壁出口
との環状間〓を調整する微粉炭供給管駆動機構を
備えたことを特徴とする固形燃料噴出バーナ。1. A pulverized coal nozzle is provided at the tip of a pulverized coal supply pipe that supplies pulverized coal and its carrier gas to the gasifier, and the outer wall of the tip of the pulverized coal nozzle has a hemispherical shape and is coaxial with the pulverized coal supply pipe. has an outer cylindrical tube having a double pipe structure, the inner wall at the tip of the outer cylindrical tube has the same hemispherical shape as the outer wall at the tip of the pulverized coal nozzle, and the outer cylindrical tube and the pulverized coal supply A solid fuel injection burner comprising a gasifying agent supply port for supplying a gasifying agent between the outer pipe and the outer pipe, and a cooling water supply port for circulating cooling water inside the outer pipe having a double pipe structure. And,
A differential pressure detector is provided for detecting a differential pressure between the gasifying agent supply port and the gasifier, and the pulverized coal supply pipe is moved in the axial direction according to the differential pressure of the differential pressure detector, and the outer cylinder is moved in the axial direction. A solid fuel injection burner comprising a pulverized coal supply pipe drive mechanism that adjusts the annular distance between the inner wall outlet at the tip of the tube and the outer wall outlet at the tip of the pulverized coal nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29873386A JPS63152694A (en) | 1986-12-17 | 1986-12-17 | Solid fuel injection burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29873386A JPS63152694A (en) | 1986-12-17 | 1986-12-17 | Solid fuel injection burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63152694A JPS63152694A (en) | 1988-06-25 |
| JPH0455635B2 true JPH0455635B2 (en) | 1992-09-03 |
Family
ID=17863561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29873386A Granted JPS63152694A (en) | 1986-12-17 | 1986-12-17 | Solid fuel injection burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63152694A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002161284A (en) * | 2000-11-27 | 2002-06-04 | Mitsubishi Heavy Ind Ltd | Coal gasifier |
| KR101900118B1 (en) * | 2011-01-14 | 2018-09-18 | 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드 | Gasification reactor |
-
1986
- 1986-12-17 JP JP29873386A patent/JPS63152694A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63152694A (en) | 1988-06-25 |
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