JP2002243123A - Fluidized bed type boiler device and operating method thereof - Google Patents
Fluidized bed type boiler device and operating method thereofInfo
- Publication number
- JP2002243123A JP2002243123A JP2001044671A JP2001044671A JP2002243123A JP 2002243123 A JP2002243123 A JP 2002243123A JP 2001044671 A JP2001044671 A JP 2001044671A JP 2001044671 A JP2001044671 A JP 2001044671A JP 2002243123 A JP2002243123 A JP 2002243123A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- fuel
- bed boiler
- fuel supply
- supply system
- 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.)
- Granted
Links
- 238000011017 operating method Methods 0.000 title 1
- 239000000446 fuel Substances 0.000 claims abstract description 117
- 239000003245 coal Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000010849 combustible waste Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000004898 kneading Methods 0.000 claims description 7
- 235000011837 pasties Nutrition 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 8
- 238000007781 pre-processing Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000006148 magnetic separator Substances 0.000 description 6
- 239000010813 municipal solid waste Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 102220579497 Macrophage scavenger receptor types I and II_F23C_mutation Human genes 0.000 description 1
- 101100219325 Phaseolus vulgaris BA13 gene Proteins 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、可燃性廃棄物を流
動層ボイラで燃焼させる際に、流動層の温度分布の均一
化を図るのに好適な流動層ボイラ装置の運転方法、およ
び流動層ボイラ装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for operating a fluidized-bed boiler apparatus and a fluidized-bed apparatus suitable for making the temperature distribution of a fluidized bed uniform when combustible waste is combusted in the fluidized-bed boiler. It relates to a boiler device.
【０００２】[0002]
【従来の技術】流動層ボイラ装置では、石炭を流動層ボ
イラ内で燃焼させ、その燃焼熱により、ボイラ内に設置
した伝熱管を過熱して、伝熱管内で蒸気を発生させてい
る。流動層ボイラにおいては、伝熱管が燃料の局所燃焼
で焼損しないように、流動層内の温度分布を均一にする
必要がある。一般に、流動層ボイラに供給された燃料は
水平方向には分散しにくい特性があり、そのために燃料
供給装置は水平方向に複数個並べて配置されている。ま
た、燃料供給装置の個数は流動層ボイラの断面積に概ね
比例している。2. Description of the Related Art In a fluidized-bed boiler, coal is burned in a fluidized-bed boiler, and the heat of combustion burns a heat transfer tube installed in the boiler to generate steam in the heat transfer tube. In a fluidized bed boiler, it is necessary to make the temperature distribution in the fluidized bed uniform so that the heat transfer tube is not burned by local combustion of fuel. Generally, the fuel supplied to the fluidized bed boiler has a characteristic that it is difficult to be dispersed in the horizontal direction. Therefore, a plurality of fuel supply devices are arranged in the horizontal direction. The number of fuel supply devices is substantially proportional to the cross-sectional area of the fluidized-bed boiler.
【０００３】供給する燃料は、流動層内で分散する前に
燃焼しないように、石炭と水を混合してペースト状に
し、燃料供給ポンプによって流動層ボイラに供給され
る。燃料の供給量は、伝熱管での発生蒸気を一定に保つ
ため、流動層内の温度が所定値となるよう制御されてい
る。The fuel to be supplied is mixed with coal and water to form a paste so as not to burn before being dispersed in the fluidized bed, and is supplied to the fluidized bed boiler by a fuel supply pump. The fuel supply amount is controlled so that the temperature in the fluidized bed becomes a predetermined value in order to keep the generated steam in the heat transfer tube constant.
【０００４】燃料を燃焼させるための燃焼用の空気は、
流動層を形成するために投入される流動用の空気を利用
しており、ボイラ下部より供給される。また、燃焼ガス
中の残存酸素濃度はボイラ出口に設置された酸素濃度計
により計測されている。そして、上記燃焼用の空気の供
給量は、残存酸素濃度が規定値となるように、すなわち
空燃比（燃料流量と燃焼用空気流量との割合）が一定と
なるよう制御されている。[0004] Combustion air for burning fuel is:
Utilizing flowing air that is introduced to form a fluidized bed, it is supplied from the lower part of the boiler. The residual oxygen concentration in the combustion gas is measured by an oxygen concentration meter installed at the boiler outlet. The supply amount of the combustion air is controlled so that the residual oxygen concentration becomes a specified value, that is, the air-fuel ratio (the ratio between the fuel flow rate and the combustion air flow rate) is kept constant.
【０００５】[0005]
【発明が解決しようとする課題】ところで、流動層ボイ
ラでごみを燃焼させる場合、燃料としてごみだけを燃焼
させると、ごみには生ごみ等の燃えにくいごみが混合し
ているために発熱量が変動し、伝熱管での蒸発量を一定
に保持しにくい。When refuse is burned in a fluidized-bed boiler, if only refuse is burned as fuel, the calorific value is reduced because refuse is mixed with non-burnable refuse such as garbage. It fluctuates and it is difficult to keep the amount of evaporation in the heat transfer tube constant.
【０００６】このため、発熱量の安定している石炭等の
燃料と併用して、流動層ボイラ内でごみを燃焼させるこ
とが必須となる。しかし、このような燃焼方式で石炭と
ごみといった異種のものを燃焼させると、各々に適正な
燃焼状態とすることは難しい。For this reason, it is essential to burn refuse in a fluidized-bed boiler in combination with a fuel such as coal whose calorific value is stable. However, when different kinds of materials such as coal and refuse are burned by such a burning method, it is difficult to bring each of them into a proper burning state.
【０００７】本発明の目的は、上記の従来技術の問題点
を解決し、流動層ボイラでごみを安定して燃焼させるこ
とのできる流動層ボイラ装置の運転方法、および流動層
ボイラ装置を提供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a method of operating a fluidized-bed boiler apparatus and a fluidized-bed boiler apparatus capable of stably burning refuse in a fluidized-bed boiler. It is in.
【０００８】[0008]
【課題点を解決するための手段】上記目的を達成するた
めに、本発明の流動層ボイラの運転方法は、石炭と水を
混練して得られたペースト状の燃料に、可燃性廃棄物を
粉砕して混合し、その混合燃料を流動層ボイラに供給し
て燃焼させることを特徴としている。In order to achieve the above object, a method for operating a fluidized-bed boiler according to the present invention is directed to a method of operating a fluidized-bed boiler, which comprises mixing combustible waste into a paste fuel obtained by kneading coal and water. It is characterized in that it is pulverized and mixed, and the mixed fuel is supplied to a fluidized-bed boiler and burned.
【０００９】また、本発明の流動層ボイラの運転方法
は、石炭と水を混練して得られたペースト状の燃料を流
動層ボイラで燃焼させる際に、粉砕した可燃性廃棄物を
圧縮空気により前記ペースト状の燃料に混合し、その混
合燃料を流動層ボイラに供給して燃焼させることを特徴
としている。The method for operating a fluidized-bed boiler according to the present invention is characterized in that, when a paste-like fuel obtained by kneading coal and water is burned in a fluidized-bed boiler, pulverized combustible waste is compressed with compressed air. The fuel is mixed with the paste-like fuel, and the mixed fuel is supplied to a fluidized-bed boiler and burned.
【００１０】流動層ボイラにおいて、石炭と水を混合し
て得られたペースト状の燃料に、粉砕した可燃性廃棄物
（ごみ）を混合して流動層に供給すると、ペースト状の
燃料と混合した可燃性廃棄物は流動層内では均一に広が
る。これにより、流動層内では局所的な燃焼が回避さ
れ、均一に燃焼するようになる。この場合、可燃性廃棄
物と混合したペースト状の燃料を流動層下部に供給する
とよい。このようにすれば、可燃性廃棄物の燃焼にも必
要な滞留時間を確保することができ、石炭および可燃性
廃棄物ともに完全燃焼させることが可能となる。In a fluidized-bed boiler, when crushed combustible waste (garbage) is mixed with a paste-like fuel obtained by mixing coal and water and supplied to a fluidized bed, it is mixed with the paste-like fuel. Combustible waste spreads evenly in the fluidized bed. As a result, local combustion is avoided in the fluidized bed, and uniform combustion occurs. In this case, a paste-like fuel mixed with combustible waste may be supplied to the lower part of the fluidized bed. In this way, the residence time required for the combustion of the combustible waste can be ensured, and both the coal and the combustible waste can be completely burned.
【００１１】石炭と水をペースト状に混合した燃料に、
粉砕した可燃性廃棄物を混ぜるにあたっては、分散空気
（圧縮空気）を供給する。このようにすると、分散空気
によりペースト状の燃料に空間が形成され、その空間に
可燃性廃棄物の粉砕片が置き換わり、ペースト状の燃料
との良好な混合が可能となる。図２には、ペースト状の
燃料に分散空気と共に可燃性廃棄物を供給した場合を示
す。[0011] To a fuel in which coal and water are mixed in a paste form,
In mixing the crushed combustible waste, dispersing air (compressed air) is supplied. In this way, a space is formed in the paste-like fuel by the dispersed air, and the crushed pieces of the combustible waste are replaced in the space, so that good mixing with the paste-like fuel becomes possible. FIG. 2 shows a case in which combustible waste is supplied to a paste-like fuel together with dispersed air.
【００１２】また、流動層内の複数箇所の温度を測定
し、その測定結果に基づいて可燃性廃棄物の混入量を調
整するとよい。例えば、各燃料供給装置近傍で流動層の
温度を複数箇所測定し、その測定値と目標値を比較し
て、供給する可燃性廃棄物の混入量を調整する。これに
よって、可燃性廃棄物の発熱量の違いによる燃焼特性の
調整が可能となる。It is preferable to measure the temperatures at a plurality of locations in the fluidized bed and adjust the amount of combustible waste mixed based on the measured results. For example, the temperature of the fluidized bed is measured at a plurality of locations near each fuel supply device, and the measured value is compared with a target value to adjust the amount of combustible waste to be supplied. This makes it possible to adjust the combustion characteristics based on the difference in the calorific value of the combustible waste.
【００１３】また、本発明の流動層ボイラ装置は、流動
層ボイラに接続され、石炭と水を混練して得られたペー
スト状の燃料を前記流動層ボイラに供給するための主燃
料供給系と、前記主燃料供給系の途中に接続され、粉砕
した可燃性廃棄物と圧縮空気を前記主燃料供給系に供給
する副燃料供給系とを備え、前記主燃料供給系内のペー
スト状の燃料に、前記副燃料供給系から供給される可燃
性廃棄物と圧縮空気を混合し、その混合燃料を前記主燃
料供給系を介して前記流動層ボイラに供給して燃焼させ
ることを特徴としている。なお、予め石炭と水を混連し
て得られたペースト状の燃料へ圧縮空気を供給しておい
ても良い。[0013] The fluidized-bed boiler apparatus of the present invention is connected to a fluidized-bed boiler and includes a main fuel supply system for supplying paste-like fuel obtained by kneading coal and water to the fluidized-bed boiler. A secondary fuel supply system that is connected in the middle of the main fuel supply system and supplies pulverized combustible waste and compressed air to the main fuel supply system. The combustible waste supplied from the auxiliary fuel supply system and the compressed air are mixed, and the mixed fuel is supplied to the fluidized bed boiler through the main fuel supply system and burned. Note that compressed air may be supplied to a pasty fuel obtained by mixing coal and water in advance.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態を図面
に従って説明する。図１は、本発明に係る流動層ボイラ
装置の全体システムを示している。流動層ボイラ１は、
図１に示すように、下部より燃焼用空気２が導入され、
燃料供給装置３より供給された燃料を流動層４で燃焼さ
せる。燃焼用空気２の流量は空気流量計１Ａで計測され
ている。流動層ボイラ１には、内部に水が流れている伝
熱管５が設けられ、この伝熱管５内の水は流動層４での
燃焼によって加熱され蒸気を発生する。発生した蒸気は
蒸気タービン６を駆動し、さらに蒸気タービン６は発電
機７を駆動する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an entire system of a fluidized-bed boiler device according to the present invention. Fluidized bed boiler 1
As shown in FIG. 1, combustion air 2 is introduced from below,
The fuel supplied from the fuel supply device 3 is burned in the fluidized bed 4. The flow rate of the combustion air 2 is measured by the air flow meter 1A. The fluidized bed boiler 1 is provided with a heat transfer tube 5 in which water flows, and the water in the heat transfer tube 5 is heated by combustion in the fluidized bed 4 to generate steam. The generated steam drives a steam turbine 6, and the steam turbine 6 drives a generator 7.
【００１５】燃料供給装置３から供給される燃料は、流
動層４内で分散する前に燃焼しないように、石炭８に水
９を混合してペースト状の燃料として、流動層４の下部
に供給されている。燃料供給装置３には、途中に燃料供
給ポンプ１０を有する燃料供給配管１１が接続され、前
記ペースト状の燃料は燃料供給ポンプ９によって加圧さ
れ、燃料供給配管１１を介して燃料供給装置３に搬送さ
れている。ペースト状の燃料の流量は燃料流量計８Ａに
より計測されている。なお、燃料供給装置３は流動層ボ
イラ１の下部に複数設置されている。The fuel supplied from the fuel supply device 3 is supplied to the lower part of the fluidized bed 4 by mixing water 9 with coal 8 as a paste-like fuel so as not to burn before being dispersed in the fluidized bed 4. Have been. A fuel supply pipe 11 having a fuel supply pump 10 on the way is connected to the fuel supply apparatus 3, and the paste-like fuel is pressurized by the fuel supply pump 9 and is supplied to the fuel supply apparatus 3 through the fuel supply pipe 11. Being transported. The flow rate of the paste fuel is measured by the fuel flow meter 8A. In addition, a plurality of fuel supply devices 3 are provided below the fluidized bed boiler 1.
【００１６】流動層ボイラ１の下部には、流動層４内の
温度を測定する層温度計１２が複数設けられている。燃
料供給装置３からの燃料供給は、層温度計１２での検出
温度が規定温度となるように制御され、これによって、
伝熱管５での発生蒸気が一定に保たれている。また、ボ
イラ出口には燃焼ガス１３中の残存酸素濃度を測定する
酸素濃度計１４が設けられている。そして、燃焼用空気
２の流入量は残存酸素濃度が規定値となるように制御さ
れている。A plurality of bed thermometers 12 for measuring the temperature in the fluidized bed 4 are provided below the fluidized bed boiler 1. The fuel supply from the fuel supply device 3 is controlled such that the temperature detected by the bed thermometer 12 becomes a specified temperature.
The steam generated in the heat transfer tube 5 is kept constant. An oxygen concentration meter 14 for measuring the concentration of residual oxygen in the combustion gas 13 is provided at the boiler outlet. The inflow amount of the combustion air 2 is controlled such that the residual oxygen concentration becomes a specified value.
【００１７】流動層ボイラ１で可燃性廃棄物であるごみ
１７を燃焼する場合には、受け入れたごみ１７はごみ前
処理設備１６に送られ、流動層ボイラで燃焼可能なよう
に前処理される。ごみ前処理設備は、破袋機１８、一次
磁選機１９、一次破砕機２０、乾燥機２１、二次磁選機
２２、アルミ磁選機２３、風力選別機２４、および二次
粉砕機２５を備えている。When the refuse 17 as combustible waste is to be burned in the fluidized-bed boiler 1, the received refuse 17 is sent to a refuse pretreatment facility 16, where the refuse 17 is pretreated so that it can be burned by the fluidized-bed boiler. . The garbage pretreatment facility includes a bag breaker 18, a primary magnetic separator 19, a primary crusher 20, a dryer 21, a secondary magnetic separator 22, an aluminum magnetic separator 23, a wind separator 24, and a secondary crusher 25. I have.
【００１８】ゴミ前処理設備１６で受け入れたごみ１７
は、一般的に袋詰めされているので破袋機１８で破袋さ
れ、ゴミ１７に含まれている異物が除去される。そし
て、一次磁選機１９により燃焼に不適当な鉄分が除去さ
れ、さらに一次破砕機２０で破砕される。ゴミを破砕す
ることにより、乾燥機２１での乾燥効率が向上し、後流
の選別工程で不燃物の除去を容易に行うことができる。
その後、二次磁選機２２、アルミ磁選機２３、風力選別
機２４でそれぞれ鉄、アルミ、不燃物が除去された後
に、ごみは二次粉砕機２５で粉砕される。二次粉砕機２
５では、燃料供給系統にて詰りを生じないよう、燃料供
給装置３の内径の約１／３以下に粉砕される。粉砕され
たごみには水９が注入され、ごみは水と混ざってペース
ト状になる。Waste 17 received by the garbage pre-treatment facility 16
Since is generally packed in a bag, the bag is broken by a bag breaking machine 18 to remove foreign substances contained in the refuse 17. Then, iron unsuitable for combustion is removed by the primary magnetic separator 19 and further crushed by the primary crusher 20. By crushing the refuse, the drying efficiency in the dryer 21 is improved, and incombustible substances can be easily removed in the downstream sorting process.
Then, after iron, aluminum, and incombustible substances are removed by the secondary magnetic separator 22, the aluminum magnetic separator 23, and the wind separator 24, the refuse is pulverized by the secondary pulverizer 25. Secondary crusher 2
In 5, the fuel is pulverized to about 約 or less of the inner diameter of the fuel supply device 3 so as not to cause clogging in the fuel supply system. Water 9 is poured into the crushed refuse, and the refuse mixes with water to form a paste.
【００１９】なお、破袋から二次粉砕までの過程は、一
般的なごみ固形燃料の製造過程と同様であるが、受け入
れするごみの性質により、装置機器の一部を削除するこ
とができる。また、別装置においてごみを固形燃料のか
たちとしたものを用いることもできる。The process from the bag breaking to the secondary pulverization is the same as that of a general waste solid fuel production process, but a part of the equipment can be omitted depending on the nature of the waste to be accepted. In another device, solid waste in the form of solid fuel can be used.
【００２０】二次粉砕機２５には粉砕ごみ搬送配管２７
の一端が接続され、この粉砕ごみ搬送配管２７の他端は
燃料供給配管１１に接続されている。そして、ペースト
状の粉砕ごみは、粉砕ごみ搬送配管２７の途中に設けら
れた粉砕ごみ供給ポンプ２８によって圧送されて燃料供
給配管１１に供給される。この場合、粉砕ごみ搬送配管
２７には粉砕ごみ供給ポンプ２８の下流側において、圧
縮空気である分散空気２９が注入される。The secondary crusher 25 has a crushed waste transport pipe 27
Is connected to the fuel supply pipe 11 at the other end. Then, the paste-like pulverized waste is pressure-fed by a pulverized waste supply pump 28 provided in the middle of the pulverized waste transport pipe 27 and supplied to the fuel supply pipe 11. In this case, dispersed air 29 which is compressed air is injected into the crushed waste transport pipe 27 on the downstream side of the crushed waste supply pump 28.
【００２１】燃料供給配管１１の中には石炭８と水９が
混連したペースト状の燃料が存在しているが、ペースト
状の粉砕ごみを分散空気２９と共に燃料供給配管１１に
供給すると、分散空気２９によりペースト状の燃料中に
空間が形成され、その空間に粉砕ごみが置き換わる。こ
れにより、ペースト状の燃料と粉砕ごみの良好な混合が
可能となる。なお、本実施の形態では粉砕ごみ搬送配管
２７に分散空気２９を注入した例を示しているが、燃料
供給配管１１に分散空気を注入して、ペースト状の燃料
に予め空間を形成しておき、そのペースト状の燃料に粉
砕ごみを混合することも可能である。In the fuel supply pipe 11, there is a paste fuel in which coal 8 and water 9 are mixed. When the paste crushed dust is supplied to the fuel supply pipe 11 together with the dispersion air 29, A space is formed in the paste fuel by the air 29, and the space is replaced with pulverized waste. Thereby, good mixing of the paste-like fuel and the pulverized waste becomes possible. In the present embodiment, an example is shown in which the dispersed air 29 is injected into the pulverized garbage transport pipe 27. However, the dispersed air is injected into the fuel supply pipe 11, and a space is previously formed in the paste fuel. It is also possible to mix pulverized waste with the pasty fuel.
【００２２】石炭とごみとの混合燃料は、燃料供給装置
３から流動層４下部に均一に供給され、局所的に燃焼す
ることはなく、流動層４内で均一に燃焼する。また、流
動層ボイ１下部に設けられた燃料供給装置３より供給す
ることにより、燃焼に必要な滞留時間を確保することが
でき、供給したごみの完全燃焼が可能となる。The mixed fuel of coal and refuse is uniformly supplied from the fuel supply device 3 to the lower portion of the fluidized bed 4 and does not locally burn, but is uniformly burned in the fluidized bed 4. Further, by supplying the fuel from the fuel supply device 3 provided below the fluidized-bed boil 1, the residence time required for combustion can be secured, and the supplied refuse can be completely burned.
【００２３】ごみ１７は生ごみ等の種々の可燃廃棄物か
らなり発熱量が変動する。そのため、伝熱管５での蒸発
量を一定に保持するには、供給するごみ１７の量は、ご
みの発熱量の変動によるボイラへの入熱量の変動の影響
度合いを考慮し、石炭量の１０％程度以下とするのがよ
い。The refuse 17 is composed of various combustible wastes such as garbage and the amount of generated heat varies. Therefore, in order to keep the amount of evaporation in the heat transfer tube 5 constant, the amount of the supplied refuse 17 is determined by considering the degree of influence of the change in the amount of heat input to the boiler due to the change in the amount of heat generated by the refuse. % Or less.
【００２４】流動層ボイラ１においては、伝熱管５が燃
料の局所燃焼で焼損しないように、流動層４内の温度分
布を均一にする必要があるので、燃料供給装置３は水平
面内に複数個並べて配置されている。このとき、各燃料
供給装置３の近傍に設置した層温度計１２の温度がそれ
ぞれ規定温度となるように、供給するごみ１７の混入量
を調整することにより、ごみの発熱量の違いによる燃焼
特性の調整が可能となる。In the fluidized bed boiler 1, it is necessary to make the temperature distribution in the fluidized bed 4 uniform so that the heat transfer tube 5 is not burned by local combustion of the fuel. They are arranged side by side. At this time, by adjusting the mixing amount of the refuse 17 to be supplied so that the temperature of the bed thermometer 12 installed in the vicinity of each fuel supply device 3 becomes the specified temperature, the combustion characteristics due to the difference in the heat value of the refuse are measured. Can be adjusted.
【００２５】なお、本実施の形態では、燃料供給ポンプ
１０、燃料供給配管１１および燃料供給装置３は主燃料
供給系を、粉砕ごみ搬送配管２７および粉砕ごみ供給ポ
ンプ２８は副燃料供給系をそれぞれ構成している。In the present embodiment, the fuel supply pump 10, the fuel supply pipe 11, and the fuel supply device 3 serve as a main fuel supply system, and the pulverized waste transport pipe 27 and the pulverized waste supply pump 28 serve as an auxiliary fuel supply system. Make up.
【００２６】また、本実施の形態では、燃料供給配管１
１の１つにペースト状の粉砕ごみと分散空気を供給する
ようにしたが、複数の燃料供給配管１１にペースト状の
粉砕ごみと分散空気を供給して、同様の制御で流動層４
内の層温度を均一に保持することも可能である。In this embodiment, the fuel supply pipe 1
1 is supplied with the paste-like pulverized refuse and the dispersion air. However, the paste-like pulverization refuse and the dispersion air are supplied to the plurality of fuel supply pipes 11 and the fluidized bed 4 is controlled in the same manner.
It is also possible to keep the temperature of the inner layer uniform.
【００２７】[0027]
【発明の効果】以上説明したように、本発明によれば、
流動層ボイラにおいて、ごみを燃料と混合させて、均一
にしかも完全燃焼させることが可能である。As described above, according to the present invention,
In a fluidized-bed boiler, it is possible to mix refuse with fuel and uniformly and completely burn it.
【図１】本発明に係る流動層ボイラ装置の全体システム
を示した構成図である。FIG. 1 is a configuration diagram showing an entire system of a fluidized-bed boiler device according to the present invention.
【図２】ペースト状の燃料に粉砕ごみが混合される原理
を示した説明図である。FIG. 2 is an explanatory diagram showing the principle of mixing crushed refuse with paste fuel.
１ 流動層ボイラ ３ 燃料供給装置 ４ 流動層 ５ 伝熱管 ８ 石炭 ９ 水 １０ 燃料供給ポンプ １１ 燃料供給配管 １２ 層温度計 １４ 酸素濃度計 １６ ごみ前処理設備 ２７ 粉砕ごみ搬送配管 ２８ 粉砕ごみ供給ポンプ ２９ 分散空気 DESCRIPTION OF SYMBOLS 1 Fluidized bed boiler 3 Fuel supply device 4 Fluidized bed 5 Heat transfer tube 8 Coal 9 Water 10 Fuel supply pump 11 Fuel supply pipe 12 Layer thermometer 14 Oxygen concentration meter 16 Waste pretreatment equipment 27 Pulverized waste transport pipe 28 Pulverized waste supply pump 29 Dispersed air
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２３Ｋ 1/02 Ｆ２３Ｋ 3/00 ３０３ 3/00 ３０３ Ｆ２３Ｃ 11/02 ３０９ (72)発明者 堀内 和行 広島県広島市中区小町４番33号 中国電力 株式会社内 (72)発明者 岡田 大輔 広島県呉市宝町６番９号 バブコック日立 株式会社呉事業所内 (72)発明者 前田 政勝 広島県呉市宝町６番９号 バブコック日立 株式会社呉事業所内 Ｆターム(参考） 3K064 AA08 AA20 AB01 AC06 AD03 AD05 AD08 AF01 BA13 3K065 AA11 AB01 AC01 BA03 CA04 CA08 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F23K 1/02 F23K 3/00 303 3/00 303 F23C 11/02 309 (72) Inventor Kazuyuki Horiuchi Hiroshima Chuo Electric Power Co., Inc., 4-33 Komachi, Naka-ku, Hiroshima-shi, Japan (72) Daisuke Okada 6-9, Takaracho, Kure-shi, Hiroshima Pref. No. 6-9 Babcock Hitachi Kure Works F Term (reference) 3K064 AA08 AA20 AB01 AC06 AD03 AD05 AD08 AF01 BA13 3K065 AA11 AB01 AC01 BA03 CA04 CA08
Claims (6)
の燃料に、可燃性廃棄物を混合し、その混合燃料を流動
層ボイラに供給して燃焼させることを特徴とする流動層
ボイラ装置の運転方法。1. A fluidized-bed boiler characterized by mixing a combustible waste with a paste-like fuel obtained by kneading coal and water, and supplying the mixed fuel to a fluidized-bed boiler for combustion. How to operate the device.
の燃料を流動層ボイラで燃焼させる際に、圧縮空気によ
り可燃性廃棄物と前記ペースト状の燃料を混合し、その
混合燃料を流動層ボイラに供給して燃焼させることを特
徴とする流動層ボイラ装置の運転方法。2. When a paste-like fuel obtained by kneading coal and water is burned in a fluidized-bed boiler, the combustible waste and the paste-like fuel are mixed by compressed air, and the mixed fuel is mixed. A method for operating a fluidized-bed boiler apparatus, wherein the fluidized-bed boiler is supplied to a fluidized-bed boiler and burned.
置の運転方法において、 前記混合燃料を流動層下部に供給することを特徴とする
流動層ボイラ装置の運転方法。3. The method for operating a fluidized-bed boiler device according to claim 1, wherein the mixed fuel is supplied to a lower portion of the fluidized-bed device.
置の運転方法において、 流動層内の複数箇所の温度を測定し、その測定結果に基
づいて前記可燃性廃棄物の混入量を調整することを特徴
とする流動層ボイラ装置の運転方法。4. The method for operating a fluidized-bed boiler apparatus according to claim 1, wherein the temperature of a plurality of locations in the fluidized bed is measured, and the amount of the combustible waste mixed is adjusted based on the measurement result. A method of operating a fluidized-bed boiler device, comprising:
練して得られたペースト状の燃料を前記流動層ボイラに
供給するための主燃料供給系と、前記主燃料供給系の途
中に接続され、粉砕した可燃性廃棄物と圧縮空気を前記
主燃料供給系に供給する副燃料供給系とを備え、前記主
燃料供給系内のペースト状の燃料に、前記副燃料供給系
から供給される可燃性廃棄物と圧縮空気を混合し、その
混合燃料を前記主燃料供給系を介して前記流動層ボイラ
に供給して燃焼させることを特徴とする流動層ボイラ装
置。5. A main fuel supply system connected to a fluidized-bed boiler for supplying paste-like fuel obtained by kneading coal and water to the fluidized-bed boiler; An auxiliary fuel supply system for supplying pulverized combustible waste and compressed air to the main fuel supply system, wherein the paste-like fuel in the main fuel supply system is supplied from the auxiliary fuel supply system. A fluidized-bed boiler device, comprising mixing combustible waste and compressed air, supplying the mixed fuel to the fluidized-bed boiler via the main fuel supply system, and burning the fluidized-bed boiler.
練して得られたペースト状の燃料と圧縮空気を前記流動
層ボイラに供給するための主燃料供給系と、前記主燃料
供給系の途中に接続され、粉砕した可燃性廃棄物を前記
主燃料供給系に供給する副燃料供給系とを備え、前記主
燃料供給系内のペースト状の燃料と圧縮空気に、前記副
燃料供給系から供給される可燃性廃棄物を混合し、その
混合燃料を前記主燃料供給系を介して前記流動層ボイラ
に供給して燃焼させることを特徴とする流動層ボイラ装
置。6. A main fuel supply system connected to a fluidized-bed boiler for supplying pasty fuel and compressed air obtained by kneading coal and water to the fluidized-bed boiler, and the main fuel supply system. And a sub-fuel supply system for supplying pulverized combustible waste to the main fuel supply system. The sub-fuel supply system is connected to the pasty fuel and compressed air in the main fuel supply system. A fluidized-bed boiler device, which mixes combustible waste supplied from a fuel tank and supplies the mixed fuel to the fluidized-bed boiler via the main fuel supply system to burn it.
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|---|---|---|---|
| JP2001044671A JP4557445B2 (en) | 2001-02-21 | 2001-02-21 | Method of operating fluidized bed boiler device and fluidized bed boiler device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001044671A JP4557445B2 (en) | 2001-02-21 | 2001-02-21 | Method of operating fluidized bed boiler device and fluidized bed boiler device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002243123A true JP2002243123A (en) | 2002-08-28 |
| JP4557445B2 JP4557445B2 (en) | 2010-10-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878829A (en) * | 2020-07-28 | 2020-11-03 | 浦湘生物能源股份有限公司 | Coal and garbage coupling fuel comprehensive treatment system and method based on fluidized bed |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09505878A (en) * | 1993-11-15 | 1997-06-10 | エナーテック エンヴァイラメンタル インコーポレイテッド | Effective use of fuel containing chlorine and water |
| JPH11218303A (en) * | 1998-02-03 | 1999-08-10 | Ebara Corp | Pressurized fluidized bed boiler |
-
2001
- 2001-02-21 JP JP2001044671A patent/JP4557445B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09505878A (en) * | 1993-11-15 | 1997-06-10 | エナーテック エンヴァイラメンタル インコーポレイテッド | Effective use of fuel containing chlorine and water |
| JPH11218303A (en) * | 1998-02-03 | 1999-08-10 | Ebara Corp | Pressurized fluidized bed boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878829A (en) * | 2020-07-28 | 2020-11-03 | 浦湘生物能源股份有限公司 | Coal and garbage coupling fuel comprehensive treatment system and method based on fluidized bed |
| CN111878829B (en) * | 2020-07-28 | 2022-07-05 | 浦湘生物能源股份有限公司 | Coal and garbage coupling fuel comprehensive treatment system and method based on fluidized bed |
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| Publication number | Publication date |
|---|---|
| JP4557445B2 (en) | 2010-10-06 |
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