JP2003206010A - Fire preventive system for solid fuel storage tank - Google Patents
Fire preventive system for solid fuel storage tankInfo
- Publication number
- JP2003206010A JP2003206010A JP2002005496A JP2002005496A JP2003206010A JP 2003206010 A JP2003206010 A JP 2003206010A JP 2002005496 A JP2002005496 A JP 2002005496A JP 2002005496 A JP2002005496 A JP 2002005496A JP 2003206010 A JP2003206010 A JP 2003206010A
- Authority
- JP
- Japan
- Prior art keywords
- solid fuel
- storage tank
- fuel storage
- air
- prevention 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
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、生ごみや可燃ご
み、プラスチックごみ等を固形化して燃料にする固形燃
料製造プラントに設置され、製造された固形燃料（ＲＤ
Ｆ）を一時的に貯蔵する固形燃料貯蔵槽に設けられるも
のであり、固形燃料貯蔵槽内での自然発火による火災事
故を防止できるようにした固形燃料貯蔵槽の火災防止シ
ステムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid fuel (RD) manufactured by being installed in a solid fuel manufacturing plant for solidifying food waste, combustible waste, plastic waste, etc. into fuel.
The present invention relates to a fire prevention system for a solid fuel storage tank, which is provided in a solid fuel storage tank for temporarily storing F) and is capable of preventing a fire accident due to spontaneous ignition in the solid fuel storage tank.
【０００２】[0002]
【従来の技術】一般に、都市ごみや産業廃棄物等の廃棄
物の処理方法としては、焼却による処理がその主流を占
めており、ストーカ式焼却炉や流動床式焼却炉を用いた
焼却処理方法が多く実用化されている。2. Description of the Related Art Generally, as a method for treating waste such as municipal solid waste and industrial waste, incineration is the mainstream, and a stoker type incinerator or a fluidized bed type incinerator is used. Have been put to practical use.
【０００３】しかし、近年では、環境問題や資源の有効
利用の高まりから、廃棄物から分別回収した金属有価物
（鉄類、非鉄金属）や可燃性のごみ等を再資源化するリ
サイクル指向へと変化している。このような時代背景の
中、近年脚光を浴びているのが、生ごみや可燃ごみ、プ
ラスチックごみを固形化して燃料にする固形燃料の製造
である。固形燃料の製造は、ごみをエネルギーにすると
いった資源活用のメリットに加え、地球温暖化防止等の
環境保護の観点からも注目されている。However, in recent years, due to environmental problems and the increase in effective use of resources, there has been a shift toward recycling for recycling valuable metals (ferrous metals, non-ferrous metals) and combustible waste that have been separated and collected from waste. Is changing. Against this background of the times, what has been in the spotlight in recent years is the production of solid fuels that solidify food waste, combustible waste, and plastic waste into fuels. The production of solid fuels is drawing attention from the viewpoint of environmental protection such as prevention of global warming, in addition to the merit of utilizing resources such as turning waste into energy.
【０００４】従来、固形燃料製造プラントに於いては、
都市ごみ等の廃棄物を破砕機により破砕処理した後、こ
の廃棄物を乾燥機により乾燥処理し、次に乾燥処理され
たごみを磁選機、アルミ選別機及び風力選別機へ順次供
給し、廃棄物の中から鉄類、非鉄金属（アルミニウム、
銅、ステンレス等）及び不燃物（ガラス、土砂、コンク
リート等）を順次選別除去し、最後に鉄類、非鉄金属及
び不燃物が除去された廃棄物（可燃ごみやプラスチック
ごみ等）を成形機により押出し成形して固形燃料にする
ようにしている。このようにして製造された固形燃料
は、固形燃料貯蔵槽内に一旦貯蔵された後、必要に応じ
てボイラ等へ石油等の代替燃料として供給されている。Conventionally, in a solid fuel manufacturing plant,
After crushing waste such as municipal waste with a crusher, dry this waste with a dryer, and then supply the dried waste to a magnetic separator, aluminum sorter, and wind sorter in order, and then discard. Iron and non-ferrous metals (aluminum,
Copper, stainless steel, etc.) and incombustibles (glass, earth and sand, concrete, etc.) are sorted and removed in sequence, and finally iron, non-ferrous metals and incombustibles are removed by waste (combustible waste, plastic waste, etc.) with a molding machine It is extruded into a solid fuel. The solid fuel produced in this manner is temporarily stored in a solid fuel storage tank and then supplied to a boiler or the like as an alternative fuel such as petroleum, if necessary.
【０００５】[0005]
【発明が解決しようとする課題】ところで、固形燃料製
造プラントに於いては、押出し成形した固形燃料を貯蔵
する固形燃料貯蔵槽内で自然発火による火災事故が発生
している。その原因の一つとして考えられているのが、
固形燃料製造プラントに搬入されるごみの中に含まれて
いるビデオテープ等のテープ類であり、テープ類に含ま
れている鉄粉が空気中の酸素との酸化作用により熱を出
したものと推察される。テープ類は、製品として一般に
使用されている間は表面をコーティング剤で覆われてい
るため、直接空気中の酸素と触れることはない。しか
し、固形燃料製造プラントに搬入されると、約３００℃
程度のガスによる乾燥及び押出し成形機による摩擦熱等
により、表面のコーティング剤が破壊され、固形燃料に
成形されたときには空気中の酸素と直接触れる状態にな
っていると推察される。又、テープ類の他には、携帯用
カイロも自然発火の原因の一つとして考えられている。
何故なら、携帯用カイロは、その主成分が鉄粉であり、
この鉄粉が空気中の酸素に接触して酸化反応を起こすか
らである。By the way, in a solid fuel manufacturing plant, a fire accident occurs due to spontaneous combustion in a solid fuel storage tank for storing an extruded solid fuel. One of the causes is thought to be
The tapes such as video tapes contained in the waste carried into the solid fuel manufacturing plant, and the iron powder contained in the tapes generated heat due to the oxidation action with oxygen in the air. Inferred. The tapes are not directly exposed to oxygen in the air because they are covered with a coating agent while they are generally used as products. However, when it is delivered to the solid fuel manufacturing plant, it will reach approximately 300 ° C.
It is presumed that the coating agent on the surface is destroyed by the drying with a certain amount of gas and the frictional heat by the extruder, and when it is molded into a solid fuel, it is in a state of being in direct contact with oxygen in the air. In addition to tapes, portable warmers are also considered as one of the causes of spontaneous combustion.
Because the main component of portable Cairo is iron powder,
This is because the iron powder comes into contact with oxygen in the air to cause an oxidation reaction.
【０００６】従って、固形燃料貯蔵槽に於いては、テー
プ類等を多く含んだ固形燃料が固形燃料貯蔵槽に溜めら
れて同じ場所に集まると、お互いの酸化熱により更に酸
化が促進され、熱が蓄積されて温度が上昇し、くすぶり
・発火に至ることになる。従来の固形燃料貯蔵槽に於い
ては、火災防止設備を全く設けていないか、又は、火災
防止設備を設けているとしても、固形燃料貯蔵槽の上部
に散水ノズルを設けている程度である。そのため、従来
の固形燃料貯蔵槽に於いては、自然発火による火災事故
が発生する確率が高く、安全性に欠けると云う問題があ
った。Therefore, in the solid fuel storage tank, when the solid fuel containing a large amount of tapes and the like is stored in the solid fuel storage tank and gathers at the same place, the oxidation heat of each other further promotes the oxidation, and Are accumulated and the temperature rises, leading to smoldering and ignition. In a conventional solid fuel storage tank, no fire prevention equipment is provided, or even if a fire prevention equipment is provided, a sprinkler nozzle is provided above the solid fuel storage tank. Therefore, in the conventional solid fuel storage tank, there is a high probability that a fire accident due to spontaneous ignition will occur, and there is a problem that the safety is insufficient.
【０００７】本発明は、このような問題点に鑑みて為さ
れたものであり、その目的は自然発火による火災事故を
防止できるようにした固形燃料貯蔵槽の火災防止システ
ムを提供することにある。The present invention has been made in view of the above problems, and an object thereof is to provide a fire prevention system for a solid fuel storage tank capable of preventing a fire accident due to spontaneous combustion. .
【０００８】[0008]
【課題を解決するための手段】本願発明者は、固形燃料
貯蔵槽内のくすぶり・発火を防ぐために固形燃料が発火
に至る工程（酸化→蓄熱→酸化の促進→温度の上昇→く
すぶり・発火）に於いて、固形燃料に含まれている鉄粉
の酸化を防ぐことは経済的に不利なので、固形燃料貯蔵
槽内の蓄熱を防ぐことにより発火を防ぐこととした。そ
こで、固形燃料貯蔵槽内の蓄熱を防止する手段として、
空気による冷却や固形燃料を絶えず動かすことを考え、
その結果、本件発明を創作するに至った。[Means for Solving the Problems] The inventors of the present application have proposed a process in which solid fuel is ignited in order to prevent smoldering / ignition in a solid fuel storage tank (oxidation → heat storage → acceleration of oxidation → temperature rise → smoldering / ignition). Since it is economically disadvantageous to prevent the oxidation of iron powder contained in the solid fuel, it was decided to prevent the ignition by preventing the heat storage in the solid fuel storage tank. Therefore, as a means to prevent heat storage in the solid fuel storage tank,
Considering cooling by air and constantly moving solid fuel,
As a result, the present invention was created.
【０００９】即ち、本発明の請求項１の発明は、固形燃
料貯蔵槽に設けられ、固形燃料貯蔵槽内での自然発火に
よる火災事故を防止する固形燃料貯蔵槽の火災防止シス
テムであって、前記火災防止システムは、固形燃料貯蔵
槽内から引き抜いた空気を固形燃料貯蔵槽内へ再循環さ
せる空気循環路と、空気循環路に介設した循環用送風機
とから成り、固形燃料貯蔵槽の上部から引き抜いた空気
を固形燃料貯蔵槽の下部へ吹き込み、当該空気により固
形燃料を冷却して固形燃料貯蔵槽内の蓄熱を防止するよ
うにしたことに特徴がある。That is, the invention of claim 1 of the present invention is a fire prevention system for a solid fuel storage tank, which is provided in the solid fuel storage tank and prevents a fire accident due to spontaneous ignition in the solid fuel storage tank. The fire prevention system comprises an air circulation path for recirculating the air drawn from the solid fuel storage tank into the solid fuel storage tank, and a circulation blower interposed in the air circulation path. It is characterized in that the air drawn out from the solid fuel storage tank is blown into the lower portion of the solid fuel storage tank, and the solid fuel is cooled by the air to prevent heat accumulation in the solid fuel storage tank.
【００１０】本発明の請求項２の発明は、固形燃料貯蔵
槽に設けられ、固形燃料貯蔵槽内での自然発火による火
災事故を防止する固形燃料貯蔵槽の火災防止システムで
あって、前記火災防止システムは、固形燃料貯蔵槽から
抜き出した固形燃料を固形燃料貯蔵槽内へ再循環させる
搬送装置から成り、固形燃料貯蔵槽の下部から抜き出し
た固形燃料を固形燃料貯蔵槽の上部へ投入し、固形燃料
を絶えず動かして固形燃料貯蔵槽内の蓄熱を防止するよ
うにしたことに特徴がある。A second aspect of the present invention is a fire prevention system for a solid fuel storage tank, which is provided in the solid fuel storage tank and prevents a fire accident due to spontaneous ignition in the solid fuel storage tank. The prevention system is composed of a conveying device for recirculating the solid fuel extracted from the solid fuel storage tank into the solid fuel storage tank, and the solid fuel extracted from the lower portion of the solid fuel storage tank is put into the upper portion of the solid fuel storage tank. It is characterized in that the solid fuel is constantly moved to prevent heat storage in the solid fuel storage tank.
【００１１】本発明の請求項３の発明は、固形燃料貯蔵
槽の上部に送水管に接続された散水ノズルを配設すると
共に、固形燃料貯蔵槽の上部側にＣＯ検出器及び温度検
出器を夫々配設し、前記ＣＯ検出器及び温度検出器によ
り固形燃料貯蔵槽内の空気又は固形燃料貯蔵槽から引き
抜かれた空気中のＣＯ量及び空気温度を夫々検出し、Ｃ
Ｏの検出量又は空気の検出温度に基づいてＣＯ検出器又
は温度検出器により送水管に介設した制御弁を制御し、
散水ノズルから固形燃料貯蔵槽内へ散水するようにした
ことに特徴がある。According to a third aspect of the present invention, a sprinkler nozzle connected to a water pipe is provided above the solid fuel storage tank, and a CO detector and a temperature detector are provided above the solid fuel storage tank. The CO detector and the temperature detector are respectively provided to detect the amount of CO and the air temperature in the air in the solid fuel storage tank or in the air drawn from the solid fuel storage tank, respectively.
The control valve installed in the water pipe is controlled by the CO detector or the temperature detector based on the detected amount of O or the detected temperature of air,
The feature is that water is sprayed from the water spray nozzle into the solid fuel storage tank.
【００１２】本発明の請求項４の発明は、空気循環路
が、その下流側端部に空気吹込みノズルを一定間毎に設
けた環状の送風ヘッダーを備えており、複数の吹込みノ
ズルから固形燃料貯蔵槽の下部へ空気を均一に吹き込め
るようにしたことに特徴がある。According to a fourth aspect of the present invention, the air circulation passage is provided with an annular blower header in which an air blowing nozzle is provided at a downstream end thereof at regular intervals, and a plurality of blowing nozzles are provided. The feature is that air can be blown uniformly into the lower part of the solid fuel storage tank.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳細に説明する。図１は本発明の第１の実施
の形態に固形燃料貯蔵槽１の火災防止システムを設けた
固形燃料貯蔵槽１の概略図を示し、当該固形燃料貯蔵槽
１は、生ごみや可燃ごみ、プラスチックごみ等を固形化
して燃料にする固形燃料製造プラントに設置されてお
り、製造された固形燃料を石油等の代替燃料としてボイ
ラ等へ供給する際に一時的に貯蔵するものであり、貯蔵
した固形燃料を必要に応じて排出できるように構成され
ている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a schematic view of a solid fuel storage tank 1 provided with a fire prevention system for the solid fuel storage tank 1 according to the first embodiment of the present invention. It is installed in a solid fuel manufacturing plant that solidifies plastic waste etc. and uses it as fuel, and temporarily stores the manufactured solid fuel when supplying it to a boiler etc. as an alternative fuel for petroleum etc. The solid fuel can be discharged as needed.
【００１４】尚、固形燃料製造プラントで製造された固
形燃料は、搬送や保管に便利なように円柱状に形成され
ている。この固形燃料は、水分や不燃物が少ないために
燃焼率が高く、ボイラ等の燃料に適しているうえ、高温
乾燥しているためにごみ特有の臭いが無く、極めて衛生
的である。The solid fuel produced in the solid fuel production plant is formed in a cylindrical shape so as to be convenient for transportation and storage. This solid fuel has a high burning rate because it contains little water and incombustibles, and is suitable for fuels such as boilers, and because it is dried at high temperatures, it has no odor peculiar to dust and is extremely hygienic.
【００１５】前記固形燃料貯蔵槽１は、円筒状の周壁部
１ａと、周壁部１ａの上端に連設された天井部１ｂと、
周壁部１ａの下端に連設されたホッパ部１ｃ等から成
り、複数本の支持脚１ｃにより床面に起立姿勢で支持固
定されている。又、固形燃料貯蔵槽１の天井部１ｂに
は、成形機（図示省略）により押出し成形された固形燃
料を固形燃料貯蔵槽１側へ搬送する固形燃料搬送コンベ
ヤ２の終端部側が連通状に接続されている。更に、固形
燃料貯蔵槽１のホッパ部１ｃには、固形燃料貯蔵槽１内
の固形燃料を定量ずつ排出できるように排出装置３（テ
ーブルフィーダー等）とロータリーバルブ４が夫々設け
られている。The solid fuel storage tank 1 has a cylindrical peripheral wall portion 1a, and a ceiling portion 1b connected to the upper end of the peripheral wall portion 1a.
The peripheral wall portion 1a includes a hopper portion 1c continuously provided at the lower end of the peripheral wall portion 1a and the like, and is supported and fixed in an upright posture on the floor by a plurality of support legs 1c. Further, the ceiling portion 1b of the solid fuel storage tank 1 is connected to the end portion side of a solid fuel transfer conveyor 2 for transferring the solid fuel extruded by a molding machine (not shown) to the solid fuel storage tank 1 side so as to communicate with each other. Has been done. Further, the hopper 1c of the solid fuel storage tank 1 is provided with a discharge device 3 (table feeder, etc.) and a rotary valve 4 so that the solid fuel in the solid fuel storage tank 1 can be discharged in a fixed amount.
【００１６】そして、本発明の第１の実施の形態に係る
固形燃料貯蔵槽１の火災防止システムは、固形燃料貯蔵
槽１内から引き抜いた空気を固形燃料貯蔵槽１内へ再循
環させる空気循環路５と、空気循環路５に介設された循
環用送風機６とから成り、固形燃料貯蔵槽１内の上部領
域から引き抜いた空気を固形燃料貯蔵槽１内の下部領域
へ吹き込み、空気により固形燃料を冷却して固形燃料貯
蔵槽１内の蓄熱を防止するようにしたものである。The fire prevention system for the solid fuel storage tank 1 according to the first embodiment of the present invention is an air circulation system for recirculating the air drawn from the solid fuel storage tank 1 into the solid fuel storage tank 1. It is composed of a passage 5 and a blower 6 for circulation provided in the air circulation passage 5, and the air drawn from the upper region in the solid fuel storage tank 1 is blown into the lower region in the solid fuel storage tank 1 to be solidified by the air. The fuel is cooled to prevent heat storage in the solid fuel storage tank 1.
【００１７】前記空気循環路５は、上流側端部が固形燃
料貯蔵槽１の天井部１ｂに接続され、下流側端部が循環
用送風機６に接続された吸気管５ａと、上流側端部が循
環用送風機６に接続された送風管５ｂと、固形燃料貯蔵
槽１のホッパ部１ｃの周囲に配置され、送風管５ｂの下
流側端部に接続された環状の送風ヘッダー５ｃと、送風
ヘッダー５ｃに一定間隔毎に設けられ、固形燃料貯蔵槽
１のホッパ部１ｃに接続された複数の空気吹込みノズル
５ｄとから成り、固形燃料貯蔵槽１内の上部領域から空
気を引き抜いてこれを固形燃料貯蔵槽１のホッパ部１ｃ
内へ吹き込めるようになっている。The air circulation path 5 has an upstream end connected to the ceiling 1b of the solid fuel storage tank 1 and a downstream end connected to the circulation blower 6 and an intake pipe 5a, and an upstream end. Is arranged around the blower pipe 5b connected to the circulation blower 6 and the hopper portion 1c of the solid fuel storage tank 1 and is connected to the downstream end of the blower pipe 5b. 5c and a plurality of air blowing nozzles 5d provided at regular intervals and connected to the hopper portion 1c of the solid fuel storage tank 1. Air is drawn from the upper region of the solid fuel storage tank 1 and solidified. Hopper 1c of fuel storage tank 1
It can be blown inside.
【００１８】そして、前記火災防止システムに於いて
は、固形燃料貯蔵槽１の安全性をより考慮し、固形燃料
貯蔵槽１内の発煙・発火の早期発見・早期消火を行える
ように、固形燃料貯蔵槽１に散水ノズル７、ＣＯ検出器
８及び温度検出器９等を設けている。即ち、この火災防
止システムに於いては、固形燃料貯蔵槽１の天井部１ｂ
に複数の散水ノズル７を配設すると共に、これら散水ノ
ズル７に送水管１０を接続し、固形燃料貯蔵槽１の上部
側に配設したＣＯ検出器８及び温度検出器９により固形
燃料貯蔵槽１内の上部領域から引き抜かれた空気中のＣ
Ｏ量及び空気温度を検出し、空気中のＣＯ量又は空気温
度に基づいてＣＯ検出器８又は温度検出器９により送水
管１０に介設した制御弁１１（電磁弁）を制御し、散水
ノズル７から固形燃料貯蔵槽１内へ散水できるように構
成されている。尚、ＣＯ検出器８及び温度検出器９は、
固形燃料貯蔵槽１内で発生した煙、発火による空気の温
度上昇を検出し易い位置に配設されている。In the fire prevention system, in consideration of the safety of the solid fuel storage tank 1, the solid fuel storage tank 1 is designed so that smoke and ignition in the solid fuel storage tank 1 can be early detected and extinguished. The storage tank 1 is provided with a watering nozzle 7, a CO detector 8, a temperature detector 9, and the like. That is, in this fire prevention system, the ceiling portion 1b of the solid fuel storage tank 1 is
A plurality of water spray nozzles 7 are provided in the solid fuel storage tank, a water supply pipe 10 is connected to the water spray nozzles 7, and a CO detector 8 and a temperature detector 9 arranged on the upper side of the solid fuel storage tank 1 are used. C in the air drawn from the upper region in 1
The amount of O and the air temperature are detected, and the control valve 11 (electromagnetic valve) provided in the water supply pipe 10 is controlled by the CO detector 8 or the temperature detector 9 on the basis of the amount of CO in the air or the air temperature, and the water spray nozzle. It is configured so that water can be sprinkled from 7 into the solid fuel storage tank 1. The CO detector 8 and the temperature detector 9 are
It is arranged at a position where it is easy to detect smoke generated in the solid fuel storage tank 1 and temperature rise of air due to ignition.
【００１９】而して、上述した固形燃料貯蔵槽１の火災
防止システムによれば、循環用送風機６を作動させる
と、固形燃料貯蔵槽１内の上部領域の空気が吸気管５ａ
へ吸引され、循環用送風機６及び送風管５ｂを経て送封
ヘッダー５ｃの空気吹込みノズル５ｄから固形燃料貯蔵
槽１内の下部領域（ホッパ部１ｃ内）へ吹き込まれる。
このとき、環状の送風ヘッダー５ｃに空気吹込みノズル
５ｄを一定間隔毎に設けているため、固形燃料貯蔵槽１
内の上部領域から引き抜かれた空気は固形燃料貯蔵槽１
内の下部領域へ均一に吹き込まれることになる。According to the above-described fire prevention system for the solid fuel storage tank 1, when the circulation blower 6 is operated, the air in the upper region of the solid fuel storage tank 1 is sucked into the intake pipe 5a.
And is blown into the lower region (in the hopper portion 1c) in the solid fuel storage tank 1 from the air blowing nozzle 5d of the sealing header 5c through the circulation blower 6 and the blower pipe 5b.
At this time, since the air blowing nozzles 5d are provided in the annular blower header 5c at regular intervals, the solid fuel storage tank 1
The air drawn from the upper area inside the solid fuel storage tank 1
It will be uniformly blown into the lower region inside.
【００２０】固形燃料貯蔵槽１内の下部領域に吹き込ま
れた空気は、固形燃料貯蔵槽１内に貯蔵されている固形
燃料間の隙間を通過して上方へ流れて行き、この間に固
形燃料を冷却することになる。従って、固形燃料貯蔵槽
１内に熱が蓄積されるのが防止され、固形燃料貯蔵槽１
内での蓄熱による自然発火を未然に防止することができ
る。特に、空気は、固形燃料貯蔵槽１内の下部領域へ均
一に供給されているため、固形燃料貯蔵槽１内の全ての
固形燃料を確実且つ良好に冷却することができる。The air blown into the lower region of the solid fuel storage tank 1 passes through the gaps between the solid fuels stored in the solid fuel storage tank 1 and flows upward, during which the solid fuel is stored. It will be cooled. Therefore, heat is prevented from being accumulated in the solid fuel storage tank 1,
It is possible to prevent spontaneous combustion due to heat storage inside. In particular, since the air is uniformly supplied to the lower region in the solid fuel storage tank 1, all the solid fuel in the solid fuel storage tank 1 can be surely and satisfactorily cooled.
【００２１】固形燃料貯蔵槽１内の固形燃料を冷却した
空気は、固形燃料貯蔵槽１内の上部領域から再度吸気管
５ａへ吸引され、吸気管５ａ及び送風管５ｂを通過する
間に冷却されて送風ヘッダー５ｃの空気吹込みノズル５
ｄから固形燃料貯蔵槽１内の下部領域へ吹き込まれ、固
形燃料を冷却する。The air that has cooled the solid fuel in the solid fuel storage tank 1 is sucked into the intake pipe 5a again from the upper region in the solid fuel storage tank 1 and cooled while passing through the intake pipe 5a and the blower pipe 5b. Air blow nozzle 5 of blower header 5c
It is blown into the lower region in the solid fuel storage tank 1 from d to cool the solid fuel.
【００２２】そして、空気による固形燃料の冷却が不十
分になり、固形燃料貯蔵槽１内で万が一自然発火による
火災が発生しても、ＣＯ検出器８及び温度検出器９によ
り吸気管５ａ内へ吸引された空気中のＣＯ量及び空気温
度を検出しているため、空気中のＣＯ量及び空気温度に
より固形燃料貯蔵槽１内の発煙・発火を早期に発見する
ことができる。このとき、空気中のＣＯ量又は空気温度
が所定の値に達している場合には、ＣＯ検出器８又は温
度検出器９により制御弁１１が制御されて自動的に開放
され、これによって散水ノズル７から固形燃料貯蔵槽１
内へ散水するようになっている。従って、この火災防止
システムに於いては、固形燃料貯蔵槽１内で発生した火
災の早期発見・早期消火を行え、火災事故を確実に防止
することができる。Even if the solid fuel is insufficiently cooled by air and a fire due to spontaneous ignition occurs in the solid fuel storage tank 1, the CO detector 8 and the temperature detector 9 bring the solid fuel into the intake pipe 5a. Since the amount of CO in the sucked air and the temperature of the air are detected, it is possible to quickly detect smoke and ignition in the solid fuel storage tank 1 based on the amount of CO in the air and the temperature of the air. At this time, when the amount of CO in the air or the air temperature has reached a predetermined value, the control valve 11 is controlled by the CO detector 8 or the temperature detector 9 to be automatically opened, whereby the watering nozzle. 7 to solid fuel storage tank 1
Water is sprinkled inside. Therefore, in this fire prevention system, a fire that has occurred in the solid fuel storage tank 1 can be detected and extinguished early, and a fire accident can be reliably prevented.
【００２３】図２は本発明の第２の実施の形態に係る固
形燃料貯蔵槽１の火災防止システムを設けた固形燃料貯
蔵槽１の概略図を示し、当該固形燃料貯蔵槽１は、生ご
みや可燃ごみ、プラスチックごみ等を固形化して燃料に
する固形燃料製造プラントに設置されており、製造され
た固形燃料を石油等の代替燃料としてボイラ等へ供給す
る際に一時的に貯蔵するものであり、貯蔵した固形燃料
を必要に応じて排出できるように構成されている。尚、
前記固形燃料貯蔵槽１は、上述した固形燃料貯蔵槽１
（図１に示す固形燃料貯蔵槽１）と同様構造に構成され
ており、ここではその詳細な説明を省略する。又、図１
に示す固形燃料貯蔵槽１と同一の部材・部位には同一の
参照番号を付している。FIG. 2 is a schematic view of a solid fuel storage tank 1 provided with a fire prevention system for the solid fuel storage tank 1 according to the second embodiment of the present invention. It is installed in a solid fuel manufacturing plant that solidifies combustible waste, plastic waste, etc. into fuel and temporarily stores the produced solid fuel when supplying it to boilers etc. as an alternative fuel for petroleum etc. It is configured so that the stored solid fuel can be discharged as needed. still,
The solid fuel storage tank 1 is the solid fuel storage tank 1 described above.
The solid fuel storage tank 1 shown in FIG. 1 has the same structure as that of the solid fuel storage tank 1 and its detailed description is omitted here. Moreover, FIG.
The same members and parts as those of the solid fuel storage tank 1 shown in FIG.
【００２４】本発明の第２の実施の形態に係る固形燃料
貯蔵槽１の火災防止システムは、固形燃料貯蔵槽１から
抜き出した固形燃料を固形燃料貯蔵槽１内へ再循環させ
る搬送装置１２から成り、固形燃料貯蔵槽１内の下部領
域から抜き出した固形燃料を固形燃料貯蔵槽１内の上部
領域へ投入し、固形燃料を絶えず動かして固形燃料貯蔵
槽１内の蓄熱を防止するようにしたものである。The fire prevention system for the solid fuel storage tank 1 according to the second embodiment of the present invention is configured so that the solid fuel extracted from the solid fuel storage tank 1 is recirculated into the solid fuel storage tank 1 from the carrier device 12. The solid fuel extracted from the lower region of the solid fuel storage tank 1 is put into the upper region of the solid fuel storage tank 1, and the solid fuel is constantly moved to prevent heat storage in the solid fuel storage tank 1. It is a thing.
【００２５】前記搬送装置１２は、バケットコンベヤや
スクリューフィーダー等から構成されており、始端部側
が固形燃料貯蔵槽１のホッパ部１ｃ又は排出装置３に連
通状に接続され、終端部側が天井部１ｂに連通状に接続
されている。The transfer device 12 is composed of a bucket conveyor, a screw feeder, etc., and the starting end side is connected to the hopper part 1c of the solid fuel storage tank 1 or the discharging device 3 in a communicating manner, and the end part side is the ceiling part 1b. Is connected in communication with.
【００２６】そして、前記火災防止システムに於いて
は、固形燃料貯蔵槽１の安全性をより考慮し、固形燃料
貯蔵槽１内の発煙・発火の早期発見・早期消火を行える
ように、固形燃料貯蔵槽１に散水ノズル７、ＣＯ検出器
８及び温度検出器９等を設けている。即ち、この火災防
止システムに於いては、固形燃料貯蔵槽１の天井部１ｂ
に複数の散水ノズル７を配設すると共に、これら散水ノ
ズル７に送水管１０を接続し、固形燃料貯蔵槽１の上部
側に配設したＣＯ検出器８及び温度検出器９により固形
燃料貯蔵槽１内の上部領域にある空気中のＣＯ量及び空
気温度を検出し、空気中のＣＯ量又は空気温度に基づい
てＣＯ検出器８又は温度検出器９により送水管１０に介
設した制御弁１１（電磁弁）を制御し、散水ノズル７か
ら固形燃料貯蔵槽１内へ散水するように構成されてい
る。In the fire prevention system, in consideration of the safety of the solid fuel storage tank 1, the solid fuel storage tank 1 can be quickly detected and extinguished from smoking and ignition so that the solid fuel storage tank 1 can be detected. The storage tank 1 is provided with a watering nozzle 7, a CO detector 8, a temperature detector 9, and the like. That is, in this fire prevention system, the ceiling portion 1b of the solid fuel storage tank 1 is
A plurality of water spray nozzles 7 are provided in the solid fuel storage tank, a water supply pipe 10 is connected to the water spray nozzles 7, and a CO detector 8 and a temperature detector 9 arranged on the upper side of the solid fuel storage tank 1 are used. The control valve 11 which detects the CO amount in the air and the air temperature in the upper region of 1 and is provided in the water pipe 10 by the CO detector 8 or the temperature detector 9 based on the CO amount in the air or the air temperature (Solenoid valve) is controlled to spray water from the water spray nozzle 7 into the solid fuel storage tank 1.
【００２７】而して、上述した火災防止システムによれ
ば、搬送装置１２を作動させると、固形燃料貯蔵槽１内
の下部領域にある固形燃料が自重により搬送装置１２の
始端部側へ抜き出され、搬送装置１２により上方へ搬送
されて固形燃料貯蔵槽１内の上部領域へ投入される。Thus, according to the above fire prevention system, when the carrier device 12 is operated, the solid fuel in the lower region of the solid fuel storage tank 1 is extracted to the start end side of the carrier device 12 by its own weight. The solid fuel is stored in the solid fuel storage tank 1 and is transferred to the upper region of the solid fuel storage tank 1 by the transfer device 12.
【００２８】固形燃料貯蔵槽１内の上部領域に投入され
た固形燃料は、固形燃料貯蔵槽１の下部から固形燃料が
搬送装置１２側へ順次抜き出されているため、固形燃料
貯蔵槽１内を流下し、再度搬送装置１２の始端部側へ抜
き出される。このように、固形燃料貯蔵槽１内の固形燃
料は、絶えず動いており、自然発火の原因になるテープ
類等を含んだ固形燃料が同じ所に集まることがなく、酸
化作用により熱が発生しても、お互いの酸化熱により更
に酸化が促進されるのを阻止することができる。従っ
て、固形燃料貯蔵槽１内に熱が蓄積されるのが防止さ
れ、固形燃料貯蔵槽１内での蓄熱による自然発火を未然
に防止することができる。然も、固形燃料が搬送装置１
２により搬送されている間に自然冷却されるため、固形
燃料貯蔵槽１内の蓄熱がより一層防止されることにな
る。The solid fuel charged into the upper region of the solid fuel storage tank 1 is sequentially extracted from the lower portion of the solid fuel storage tank 1 toward the carrier device 12 side. Is flowed down and is again extracted to the starting end side of the transport device 12. In this way, the solid fuel in the solid fuel storage tank 1 is constantly moving, and the solid fuel containing tapes and the like that cause spontaneous combustion does not gather at the same place, and heat is generated by the oxidation action. However, it is possible to prevent further oxidation from being promoted by the heat of oxidation of each other. Therefore, heat is prevented from being accumulated in the solid fuel storage tank 1, and spontaneous ignition due to heat storage in the solid fuel storage tank 1 can be prevented. However, the solid fuel is the transport device 1.
Since the natural fuel is naturally cooled while being transported by 2, the heat storage in the solid fuel storage tank 1 is further prevented.
【００２９】そして、循環による固形燃料の冷却が不十
分になり、固形燃料貯蔵槽１内で万が一自然発火による
火災が発生しても、ＣＯ検出器８及び温度検出器９によ
り固形燃料貯蔵槽１内の空気中のＣＯ量及び空気温度を
検出しているため、空気中のＣＯ量及び空気温度により
固形燃料貯蔵槽１内の発煙・発火を早期に発見すること
ができる。このとき、空気中のＣＯ量又は空気温度が所
定の値に達している場合には、ＣＯ検出器８又は温度検
出器９により制御弁１１が制御されて自動的に開放さ
れ、これによって散水ノズル７から固形燃料貯蔵槽１内
へ散水するようになっている。従って、この火災防止シ
ステムに於いては、固形燃料貯蔵槽１内で発生した火災
の早期発見・早期消火を行え、火災事故を確実に防止す
ることができる。Even if the solid fuel is insufficiently cooled by circulation and a fire occurs due to spontaneous ignition in the solid fuel storage tank 1, the CO detector 8 and the temperature detector 9 allow the solid fuel storage tank 1 to operate. Since the amount of CO and the temperature of the air in the inside are detected, it is possible to detect smoke and ignition in the solid fuel storage tank 1 at an early stage by the amount of CO and the temperature of the air. At this time, when the amount of CO in the air or the air temperature has reached a predetermined value, the control valve 11 is controlled by the CO detector 8 or the temperature detector 9 to be automatically opened, whereby the watering nozzle. Water is sprinkled from 7 into the solid fuel storage tank 1. Therefore, in this fire prevention system, a fire that has occurred in the solid fuel storage tank 1 can be detected and extinguished early, and a fire accident can be reliably prevented.
【００３０】[0030]
【発明の効果】上述の通り、本発明の請求項１に記載の
固形燃料貯蔵槽の火災防止システムは、固形燃料貯蔵槽
内へ空気を循環させて固形燃料を冷却し、固形燃料貯蔵
槽内の蓄熱を防止するようにしているため、自然発火に
よる火災事故を未然に防止することができる。然も、空
気を循環させるだけで自然発火による火災事故を防止で
きるため、システム自体の構造もあまり複雑なものにな
ると云うことがなく、経済的にも優れたものとなる。
又、本発明の請求項２に記載の固形燃料貯蔵槽の火災防
止システムは、固形燃料貯蔵槽内の固形燃料を循環させ
て絶えず動かし、これによって固形燃料貯蔵槽内の蓄熱
を防止するようにしているため、自然発火による火災事
故を未然に防止することができる。然も、固形燃料を循
環させるだけで自然発火による火災事故を防止できるた
め、システム自体の構造もあまり複雑なものになると云
うことがなく、経済的にも優れたものとなる。更に、本
発明の請求項３に記載の固形燃料貯蔵槽の火災防止シス
テムは、固形燃料貯蔵槽に散水ノズル、ＣＯ検出器及び
温度検出器を設け、ＣＯの検出量及び空気の検出温度に
基づいてＣＯ検出器及び温度検出器により送水管に介設
した制御弁を制御して散水ノズルから固形燃料貯蔵槽内
へ散水するようにしているため、固形燃料貯蔵槽内の発
煙・発火の早期発見・早期消火を行え、より一層安全性
に優れたものとなる。加えて、本発明の請求項４に記載
の固形燃料貯蔵槽の火災防止システムは、環状の送風ヘ
ッダーに設けた複数の空気吹込みノズルから固形燃料貯
蔵槽の下部に空気を均一に吹き込むようにしているた
め、固形燃料貯蔵槽内の全ての固形燃料を確実且つ良好
に冷却することができ、固形燃料貯蔵槽内の蓄熱をより
確実に防止することができる。As described above, the fire prevention system for a solid fuel storage tank according to claim 1 of the present invention cools the solid fuel by circulating air into the solid fuel storage tank to cool the solid fuel storage tank. Since the storage of heat is prevented, it is possible to prevent a fire accident due to spontaneous combustion. However, since it is possible to prevent a fire accident due to spontaneous combustion simply by circulating the air, the structure of the system itself does not become so complicated and it is economically superior.
The fire prevention system for a solid fuel storage tank according to claim 2 of the present invention circulates the solid fuel in the solid fuel storage tank to continuously move it, thereby preventing heat accumulation in the solid fuel storage tank. Therefore, it is possible to prevent a fire accident due to spontaneous combustion. However, since the fire accident due to spontaneous combustion can be prevented only by circulating the solid fuel, the structure of the system itself does not become so complicated, and it is economically excellent. Furthermore, the fire prevention system for a solid fuel storage tank according to claim 3 of the present invention is provided with a watering nozzle, a CO detector and a temperature detector in the solid fuel storage tank, and is based on the detected amount of CO and the detected temperature of air. The CO detector and the temperature detector control the control valve installed in the water supply pipe to spray water from the water spray nozzle into the solid fuel storage tank, so early detection of smoke and ignition in the solid fuel storage tank.・ It is possible to extinguish a fire early and to make it even more safe. In addition, in the fire prevention system for a solid fuel storage tank according to claim 4 of the present invention, air is uniformly blown into the lower portion of the solid fuel storage tank from a plurality of air blowing nozzles provided in an annular blower header. Therefore, it is possible to reliably and satisfactorily cool all the solid fuel in the solid fuel storage tank, and it is possible to more reliably prevent heat storage in the solid fuel storage tank.
【図１】本発明の第１の実施の形態に係る火災防止シス
テムを設けた固形燃料貯蔵槽の概略図である。FIG. 1 is a schematic view of a solid fuel storage tank provided with a fire prevention system according to a first embodiment of the present invention.
【図２】本発明の第２の実施の形態に係る火災防止シス
テムを設けた固形燃料貯蔵槽の概略図である。FIG. 2 is a schematic view of a solid fuel storage tank provided with a fire prevention system according to a second embodiment of the present invention.
１は固形燃料貯蔵槽、５は空気循環路、５ｃは送風ヘッ
ダー、５ｄは空気吹込みノズル、６は循環用送風機、７
は散水ノズル、８はＣＯ検出器、９は温度検出器、１０
は送水管、１１は制御弁、１２は搬送装置。1 is a solid fuel storage tank, 5 is an air circulation path, 5c is a blower header, 5d is an air blowing nozzle, 6 is a circulation blower, and 7
Is a watering nozzle, 8 is a CO detector, 9 is a temperature detector, 10
Is a water pipe, 11 is a control valve, and 12 is a transfer device.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 誠二 兵庫県尼崎市金楽寺町２丁目２番33号 株 式会社タクマ内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Seiji Sato 2-32 Kinrakuji-cho, Amagasaki-shi, Hyogo Stock In ceremony company Takuma
Claims (4)
蔵槽内での自然発火による火災事故を防止する固形燃料
貯蔵槽の火災防止システムであって、前記火災防止シス
テムは、固形燃料貯蔵槽内から引き抜いた空気を固形燃
料貯蔵槽内へ再循環させる空気循環路と、空気循環路に
介設した循環用送風機とから成り、固形燃料貯蔵槽の上
部から引き抜いた空気を固形燃料貯蔵槽の下部へ吹き込
み、当該空気により固形燃料を冷却して固形燃料貯蔵槽
内の蓄熱を防止するようにしたことを特徴とする固形燃
料貯蔵槽の火災防止システム。1. A fire prevention system for a solid fuel storage tank, which is provided in the solid fuel storage tank and prevents a fire accident due to spontaneous ignition in the solid fuel storage tank, wherein the fire prevention system is the solid fuel storage tank. It consists of an air circulation path that recirculates the air drawn from inside into the solid fuel storage tank, and a circulation blower installed in the air circulation path, and the air drawn from the top of the solid fuel storage tank is stored in the solid fuel storage tank. A fire prevention system for a solid fuel storage tank, characterized in that the solid fuel is blown into a lower part and the solid fuel is cooled by the air to prevent heat accumulation in the solid fuel storage tank.
蔵槽内での自然発火による火災事故を防止する固形燃料
貯蔵槽の火災防止システムであって、前記火災防止シス
テムは、固形燃料貯蔵槽から抜き出した固形燃料を固形
燃料貯蔵槽内へ再循環させる搬送装置から成り、固形燃
料貯蔵槽の下部から抜き出した固形燃料を固形燃料貯蔵
槽の上部へ投入し、固形燃料を絶えず動かして固形燃料
貯蔵槽内の蓄熱を防止するようにしたことを特徴とする
固形燃料貯蔵槽の火災防止システム。2. A fire prevention system for a solid fuel storage tank, which is provided in the solid fuel storage tank and prevents a fire accident due to spontaneous ignition in the solid fuel storage tank, wherein the fire prevention system is the solid fuel storage tank. It consists of a transport device that recirculates the solid fuel extracted from the solid fuel storage tank into the solid fuel storage tank.The solid fuel extracted from the lower part of the solid fuel storage tank is put into the upper part of the solid fuel storage tank, and the solid fuel is constantly moved to move the solid fuel. A fire prevention system for a solid fuel storage tank, characterized in that heat storage in the storage tank is prevented.
れた散水ノズルを配設すると共に、固形燃料貯蔵槽の上
部側にＣＯ検出器及び温度検出器を夫々配設し、前記Ｃ
Ｏ検出器及び温度検出器により固形燃料貯蔵槽内の空気
又は固形燃料貯蔵槽から引き抜かれた空気中のＣＯ量及
び空気温度を夫々検出し、ＣＯの検出量又は空気の検出
温度に基づいてＣＯ検出器又は温度検出器により送水管
に介設した制御弁を制御し、散水ノズルから固形燃料貯
蔵槽内へ散水するようにしたことを特徴とする請求項１
又は請求項２に記載の固形燃料貯蔵槽の火災防止システ
ム。3. A solid water storage tank is provided with a watering nozzle connected to a water supply pipe above the solid fuel storage tank, and a CO detector and a temperature detector are provided above the solid fuel storage tank.
The O detector and the temperature detector detect the amount of CO and the air temperature in the air in the solid fuel storage tank or the air drawn from the solid fuel storage tank, respectively, and based on the detected amount of CO or the detected temperature of air, the CO The control valve provided on the water supply pipe is controlled by a detector or a temperature detector so that water is sprayed from the water spray nozzle into the solid fuel storage tank.
Alternatively, the solid fuel storage tank fire prevention system according to claim 2.
込みノズルを一定間毎に設けた環状の送風ヘッダーを備
えており、複数の吹込みノズルから固形燃料貯蔵槽の下
部へ空気を均一に吹き込めるようにしたことを特徴とす
る請求項１に記載の固形燃料貯蔵槽の火災防止システ
ム。4. The air circulation passage is provided with an annular blower header having an air blowing nozzle provided at a downstream end thereof at regular intervals, and air is blown from the plurality of blowing nozzles to a lower portion of the solid fuel storage tank. 2. The fire prevention system for a solid fuel storage tank according to claim 1, wherein the fuel is uniformly blown into the solid fuel storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002005496A JP3904457B2 (en) | 2002-01-15 | 2002-01-15 | Fire prevention system for solid fuel storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002005496A JP3904457B2 (en) | 2002-01-15 | 2002-01-15 | Fire prevention system for solid fuel storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003206010A true JP2003206010A (en) | 2003-07-22 |
| JP3904457B2 JP3904457B2 (en) | 2007-04-11 |
Family
ID=27644521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002005496A Expired - Fee Related JP3904457B2 (en) | 2002-01-15 | 2002-01-15 | Fire prevention system for solid fuel storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3904457B2 (en) |
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| JP2007016174A (en) * | 2005-07-08 | 2007-01-25 | Fuji Electric Systems Co Ltd | Method for watching heat generation of refuse-derived solid fuel, method for cooling the same, storage device of the refuse-derived solid fuel and method for operating the same |
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2002
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| KR100743740B1 (en) | 2004-04-13 | 2007-07-27 | 엘지전자 주식회사 | Fire-prevention equipment of recycling process |
| JP2007016174A (en) * | 2005-07-08 | 2007-01-25 | Fuji Electric Systems Co Ltd | Method for watching heat generation of refuse-derived solid fuel, method for cooling the same, storage device of the refuse-derived solid fuel and method for operating the same |
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| JP2007246245A (en) * | 2006-03-17 | 2007-09-27 | Ngk Insulators Ltd | Method and device for storing powder and granular material |
| JP2008195760A (en) * | 2007-02-09 | 2008-08-28 | Chugoku Electric Power Co Inc:The | Coal state-managing system |
| JP2009083971A (en) * | 2007-09-28 | 2009-04-23 | Mhi Environment Engineering Co Ltd | Device and method for storing carbide |
| JP2013082892A (en) * | 2011-09-30 | 2013-05-09 | Metawater Co Ltd | Manufacturing method and manufacturing system of carbonized material |
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| KR102027322B1 (en) * | 2018-03-20 | 2019-10-01 | 주식회사 포스코건설 | Apparatus for monitoring fire of storage facility for solid refuse fuel and method thereof |
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|---|---|
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