JP2016133255A - Industrial furnace, energy saving operation method of the same, and modification method of the same - Google Patents

Industrial furnace, energy saving operation method of the same, and modification method of the same Download PDF

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JP2016133255A
JP2016133255A JP2015008077A JP2015008077A JP2016133255A JP 2016133255 A JP2016133255 A JP 2016133255A JP 2015008077 A JP2015008077 A JP 2015008077A JP 2015008077 A JP2015008077 A JP 2015008077A JP 2016133255 A JP2016133255 A JP 2016133255A
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exhaust pipe
industrial furnace
valve
impeller
exhaust
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JP6570836B2 (en
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祥裕 桂
Yoshihiro Katsura
祥裕 桂
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Chugai Ro Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

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Abstract

PROBLEM TO BE SOLVED: To provide an industrial furnace which generates power while preventing troubles caused by soot etc., and to provide an energy saving operation method of the industrial furnace and a modification method of the industrial furnace.SOLUTION: An industrial furnace includes: an exhaust pipe 6 connecting a combustion chamber 2 to a chimney 5; an air intake on-off valve 13 which is opened to take outer air (ATM) into the exhaust pipe; and an impeller 10a which is connected to a suction blower 10 functioning as a generator and is rotated by the outer air, which is taken through the opened air intake on-off valve and flows in the exhaust pipe, to generate electric power.SELECTED DRAWING: Figure 1

Description

本発明は、スス等によるトラブルの発生を防止しつつ、発電をすることが可能な工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法に関する。   The present invention relates to an industrial furnace capable of generating power while preventing troubles due to soot and the like, an energy saving operation method for the industrial furnace, and a method for remodeling the industrial furnace.

燃焼室と煙突を接続する排気管を備えた工業用炉としては、例えば特許文献１及び２が知られている。特許文献１の「加熱炉の炉圧制御方法」は、交互に燃焼及び排気を繰り返す対となる蓄熱式バーナーを有する加熱炉の炉圧制御方法であって、前記蓄熱式バーナーからの排ガス流路に設けられた流量調整弁の開度調整又は排ガス吸引ブロワーの吸引量の調整を行い、炉圧が一定になるように制御するものである。   For example, Patent Documents 1 and 2 are known as industrial furnaces including an exhaust pipe that connects a combustion chamber and a chimney. The “furnace pressure control method for a heating furnace” of Patent Document 1 is a furnace pressure control method for a heating furnace having a regenerative burner that alternately repeats combustion and exhaust, and an exhaust gas flow path from the regenerative burner. The flow rate adjustment valve provided at the opening is adjusted or the suction amount of the exhaust gas suction blower is adjusted to control the furnace pressure to be constant.

特許文献１は、燃焼室と煙突を接続する排ガス流路（排気管）を有し、燃焼室からの排ガスを、燃焼室と煙突との間に設けられた排ガス吸引ブロワにより吸引して、煙突から排出する加熱炉を開示している。   Patent Document 1 has an exhaust gas flow path (exhaust pipe) that connects a combustion chamber and a chimney, and sucks exhaust gas from the combustion chamber by an exhaust gas suction blower provided between the combustion chamber and the chimney. A heating furnace that discharges from the furnace is disclosed.

特許文献２の「排ガス発電浄化システム」は、サイクロン集塵機を通過した高温排ガスの膨張力で回転するタービン車室にブロワーを用いて排ガスを導入すると共に、タービン車室入口またはタービン車室内もしくはその両方に尿素水のミストを噴霧し気化させ、タービン車室内における該ミストの気化膨張時のエネルギーを直接タービン駆動に利用することでタービンの回転力を増加させ、連結された発電用モーターによりエネルギー回収し、該タービン排気を湿式浄化装置へ送り込んで排ガスの浄化を行うと共に該気化したミストを凝縮したのちフィルターにより微細な塵埃を濾過したものを該タービンへの噴霧用ミストとして再び用い、炉内または煙道にも噴霧し、湿式浄化装置から排出された排気の一部又は全部を炉内へ還流させて還流させない排気を活性炭吸着塔に送り込み、又は該排気を活性炭吸着塔へ送り込み、該活性炭吸着塔から排出される排ガスの一部又は全部を炉内へ還流させるようにしている。   The "exhaust gas power generation purification system" of Patent Document 2 introduces exhaust gas using a blower into a turbine casing that is rotated by the expansion force of high-temperature exhaust gas that has passed through a cyclone dust collector, and is used to enter the turbine casing entrance and / or the turbine casing. The mist of urea water is sprayed and vaporized, and the rotational power of the turbine is increased by directly using the energy at the time of vaporization and expansion of the mist in the turbine casing to drive the turbine, and the energy is recovered by the connected generator motor. The turbine exhaust is sent to a wet purification device to purify the exhaust gas, and after condensing the vaporized mist, fine dust is filtered by a filter and used again as a mist for spraying the turbine. Spray also on the road and recirculate part or all of the exhaust discharged from the wet purification system into the furnace. The flow was not exhaust fed to the activated carbon adsorption tower, or exhaust the feed to the activated carbon adsorption tower, so that recirculating part or all of the exhaust gas discharged from the activated carbon adsorption tower into the furnace.

特開平７−２８０４６１号公報JP 7-280461 A 国際公開第２０１４／０１７３７７号パンフレットInternational Publication No. 2014/017377 Pamphlet

上記のように、工業用炉における排ガスをタービン車室等に導入して発電する場合には、機関の稼働時に発生する排ガスがタービン車室等に導入されるので、タービンが排ガスに晒され、タービンにスス等が付着して回転し難くなる、あるいは回転不能になるというトラブルが発生するおそれがあり、これらのトラブルを回避するためには、定期的な清掃を余儀なくされるという課題があった。   As described above, when the exhaust gas in the industrial furnace is introduced into the turbine casing and the like to generate power, the exhaust gas generated during operation of the engine is introduced into the turbine casing and the like, so the turbine is exposed to the exhaust gas, There is a risk that soot will become difficult to rotate due to adhesion of soot, etc. to the turbine, or it may become impossible to rotate, and in order to avoid these troubles, there was a problem that regular cleaning was forced .

本発明は上記従来の課題に鑑みて創案されたものであって、スス等によるトラブルの発生を防止しつつ、発電をすることが可能な工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法を提供することを目的とする。   The present invention was devised in view of the above-described conventional problems, and is an industrial furnace capable of generating power while preventing troubles caused by soot and the like, an energy saving operation method for an industrial furnace, and an industrial The purpose is to provide a method for remodeling furnaces.

本発明にかかる工業用炉は、燃焼室と煙突を接続する排気管と、開放されて、上記排気管内に外気を取り込む開閉弁と、ジェネレータに接続され、開放された上記開閉弁から取り込まれて上記排気管を流れる外気により回転されて発電する羽根車とを備えたことを特徴とする。   An industrial furnace according to the present invention includes an exhaust pipe that connects a combustion chamber and a chimney, an open / close valve that is opened to take outside air into the exhaust pipe, and an open / close valve that is connected to a generator and opened. And an impeller that is rotated by outside air flowing through the exhaust pipe to generate electric power.

前記燃焼室の排ガスを吸引して前記煙突に送る吸引ブロワが、前記羽根車を有する前記ジェネレータを構成し、炉運転の非稼働時に、前記開閉弁が開放されることを特徴とする。   A suction blower that sucks exhaust gas from the combustion chamber and sends it to the chimney constitutes the generator having the impeller, and the on-off valve is opened when the furnace is not operating.

前記羽根車は、前記排気管に代えて、該排気管と炉外部とを連通する分岐管内に設けられ、前記開閉弁は、上記羽根車と上記排気管との間に設けられることを特徴とする。   The impeller is provided in a branch pipe that communicates the exhaust pipe and the outside of the furnace, instead of the exhaust pipe, and the on-off valve is provided between the impeller and the exhaust pipe. To do.

前記排気管は、蓄熱式交番燃焼バーナの排気管であることを特徴とする。   The exhaust pipe is an exhaust pipe of a regenerative alternating combustion burner.

本発明にかかる工業用炉の省エネルギ稼働方法は、上記工業用炉を用い、前記開閉弁を開くステップと、前記開閉弁から取り込まれた外気による気流により、前記羽根車を回転させて発電するステップとを有することを特徴とする。   An energy-saving operation method for an industrial furnace according to the present invention uses the industrial furnace to generate power by rotating the impeller by opening the on-off valve and an air flow from outside air taken in from the on-off valve. And a step.

前記発電するステップにより発電された電気は、蓄電池に蓄えることを特徴とする。   The electricity generated by the generating step is stored in a storage battery.

本発明にかかる工業用炉の改造方法は、燃焼室と煙突を接続する排気管と、該燃焼室の排ガスを吸引して該煙突に送る吸引ブロワとを備えた既存の工業用炉に対し、開放されて該排気管内に外気を取り込む開閉弁を設けるステップを備えたことを特徴とする。   The industrial furnace remodeling method according to the present invention is an existing industrial furnace comprising an exhaust pipe connecting a combustion chamber and a chimney, and a suction blower that sucks exhaust gas from the combustion chamber and sends it to the chimney. A step of providing an opening / closing valve that is opened to take outside air into the exhaust pipe is provided.

また、本発明にかかる工業用炉の改造方法は、燃焼室と煙突を接続する排気管を備えた既存の工業用炉に対し、該排気管と炉外部とを連通する分岐管と、該分岐管内で回転可能な羽根車を備えたジェネレータと、上記排気管と上記ジェネレータとの間に介設され、開放されて該排気管内に外気を取り込む開閉弁とを設けるステップを備えたことを特徴とする。   Further, the industrial furnace remodeling method according to the present invention includes a branch pipe that communicates the exhaust pipe and the outside of the furnace with respect to an existing industrial furnace having an exhaust pipe that connects the combustion chamber and the chimney, and the branch. And a generator provided with an impeller rotatable in a pipe, and an open / close valve interposed between the exhaust pipe and the generator and opened to take outside air into the exhaust pipe. To do.

本発明にかかる工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法にあっては、排気管に開閉弁（吸気開閉弁）を取り付けただけで、羽根車（ジェネレータに転用される吸引ブロワの羽根車）を回転して、スス等によるトラブルの発生を防止しつつ、発電をすることができる。また、既存の工業用炉を簡単な部品の追加で、上記のような省エネルギータイプに改造することができる。   In the industrial furnace, the energy saving operation method of the industrial furnace, and the industrial furnace remodeling method according to the present invention, the impeller (converted to the generator) can be obtained by simply attaching an on-off valve (intake on-off valve) to the exhaust pipe. The power generation can be performed while preventing troubles caused by soot or the like by rotating the suction blower impeller. Moreover, the existing industrial furnace can be modified to the above energy-saving type by adding simple parts.

本発明に係る工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法の好適な一実施形態を示す概略構成図である。It is a schematic block diagram which shows suitable embodiment of the industrial furnace which concerns on this invention, the energy saving operation method of an industrial furnace, and the remodeling method of an industrial furnace. 本発明に係る工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法の変形例を示す概略構成図である。It is a schematic block diagram which shows the modification of the industrial furnace which concerns on this invention, the energy saving operation method of an industrial furnace, and the remodeling method of an industrial furnace. 図２に示した変形例に関し、ジェネレータを複数備えた場合を示す概略構成図である。It is a schematic block diagram which shows the case where two or more generators are provided regarding the modification shown in FIG. 本発明に係る工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法について、羽根車にシロッコファンを用いた場合を示す概略斜視図である。It is a schematic perspective view which shows the case where the sirocco fan is used for an impeller about the industrial furnace which concerns on this invention, the energy saving operation method of an industrial furnace, and the modification method of an industrial furnace.

以下に、本発明にかかる工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法の好適な実施形態を、添付図面を参照して詳細に説明する。図１は、本実施形態にかかる工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法を示す概略構成図である。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an industrial furnace, an energy saving operation method for an industrial furnace, and a method for modifying an industrial furnace according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram illustrating an industrial furnace, an energy saving operation method for the industrial furnace, and a method for modifying the industrial furnace according to the present embodiment.

本実施形態に係る工業用炉１は、蓄熱式交番燃焼バーナを用いた工業用炉１である。図１に示すように、工業用炉１は、燃焼室２と、当該燃焼室２の両側に各々接続され、蓄熱体が設けられた蓄熱室３ａ及び燃料ノズル（図示せず）を有する、２つで対の蓄熱式バーナ３と、各々の蓄熱室３ａに連結されて燃焼用空気を供給するための供給管４と、各々の蓄熱室３ａに連結されて煙突５に接続される、煙道をなす排気管６とを備えている。排気管６は、左右の蓄熱室３ａを介して、燃焼室２と煙突５とを接続する。以下の説明においては、図１において左側の蓄熱式バーナ３を左蓄熱式バーナＬ３とも称し、右側の蓄熱式バーナ３を右蓄熱式バーナＲ３とも称する。   The industrial furnace 1 according to the present embodiment is an industrial furnace 1 using a regenerative alternating combustion burner. As shown in FIG. 1, the industrial furnace 1 has a combustion chamber 2, a heat storage chamber 3a connected to both sides of the combustion chamber 2, and provided with a heat storage body, and a fuel nozzle (not shown). A pair of heat storage burners 3, a supply pipe 4 connected to each heat storage chamber 3a for supplying combustion air, and a flue connected to each heat storage chamber 3a and connected to the chimney 5 And an exhaust pipe 6 is provided. The exhaust pipe 6 connects the combustion chamber 2 and the chimney 5 via the left and right heat storage chambers 3a. In the following description, the left heat storage burner 3 in FIG. 1 is also referred to as a left heat storage burner L3, and the right heat storage burner 3 is also referred to as a right heat storage burner R3.

供給管４は、供給開閉弁７を介して、各蓄熱室３ａに連結される。供給管４には、供給開閉弁７よりも上流側に、外気を取り込むための供給ブロワ８が設けられる。   The supply pipe 4 is connected to each heat storage chamber 3 a via a supply opening / closing valve 7. The supply pipe 4 is provided with a supply blower 8 for taking in outside air upstream of the supply opening / closing valve 7.

排気管６は、排気開閉弁９を介して、各蓄熱室３ａに連結される。排気管６には、排気開閉弁９の下流側に、具体的には、排気開閉弁９と煙突５との間に、蓄熱室３ａ側から排ガスを吸引して煙突５に送るための吸引ブロワ１０が設けられる。吸引ブロワ１０を駆動するモータ１１には、当該モータ１１をジェネレータ（発電機）として使用した際に、モータ１１で発電された電気エネルギを蓄えるためのバッテリ１２が接続される。   The exhaust pipe 6 is connected to each heat storage chamber 3a via an exhaust opening / closing valve 9. In the exhaust pipe 6, a suction blower for sucking exhaust gas from the heat storage chamber 3 a side to the downstream side of the exhaust on-off valve 9, specifically between the exhaust on-off valve 9 and the chimney 5 and sending it to the chimney 5. 10 is provided. A battery 12 for storing electrical energy generated by the motor 11 when the motor 11 is used as a generator (generator) is connected to the motor 11 that drives the suction blower 10.

排気管６には、排気開閉弁９及び吸引ブロワ１０よりも上流側に、開放されることで排気管６内に外気（ＡＴＭ）を取り込むための吸気開閉弁１３が設けられる。   The exhaust pipe 6 is provided with an intake on-off valve 13 for taking outside air (ATM) into the exhaust pipe 6 by being opened upstream of the exhaust on-off valve 9 and the suction blower 10.

以下の説明においては、左蓄熱式バーナＬ３側の供給開閉弁７を左供給開閉弁Ｌ７、左蓄熱式バーナＬ３側の排気開閉弁９を左排気開閉弁Ｌ９と称し、右蓄熱式バーナＲ３側の供給開閉弁７を右供給開閉弁Ｒ７、右蓄熱式バーナＲ３側の排気開閉弁７を右排気開閉弁Ｒ９と称する。   In the following description, the left heat storage burner L3 side supply on / off valve 7 is referred to as the left supply on / off valve L7, the left heat storage type burner L3 side exhaust on / off valve 9 is referred to as the left exhaust gas on / off valve L9, and the right heat storage type burner R3 side. The supply on / off valve 7 is referred to as a right supply on / off valve R7, and the right heat storage burner R3 side exhaust on / off valve 7 is referred to as a right exhaust on / off valve R9.

本実施形態にかかる工業用炉１では、２つの蓄熱式バーナ３のうち、例えば左蓄熱式バーナＬ３の左供給開閉弁Ｌ７を開き、左排気開閉弁Ｌ９を閉じると共に、右蓄熱式バーナＲ３の右供給開閉弁Ｒ７を閉じ、右排気開閉弁Ｒ９を開いて、燃料を左蓄熱式バーナＬ３の燃料ノズルに供給することにより、燃焼室２内に火炎を生成する。このとき、吸気開閉弁１３は閉止されていて、燃焼により発生した排ガスは、右蓄熱式バーナＲ３の蓄熱室３ａに導入され、蓄熱体を昇温した後に、右排気開閉弁Ｒ９から排気管６を流通して煙突５から排出される。   In the industrial furnace 1 according to the present embodiment, of the two heat storage burners 3, for example, the left supply on / off valve L7 of the left heat storage burner L3 is opened, the left exhaust on / off valve L9 is closed, and the right heat storage burner R3 is closed. The right supply on / off valve R7 is closed, the right exhaust on / off valve R9 is opened, and a fuel is generated in the combustion chamber 2 by supplying fuel to the fuel nozzle of the left regenerative burner L3. At this time, the intake on / off valve 13 is closed, and the exhaust gas generated by combustion is introduced into the heat storage chamber 3a of the right heat storage burner R3, the temperature of the heat storage body is raised, and then the right exhaust on / off valve R9 to the exhaust pipe 6 And is discharged from the chimney 5.

次いで、左蓄熱式バーナＬ３の左供給開閉弁Ｌ７を閉じ、左排気開閉弁Ｌ９を開くと共に、右蓄熱式バーナＲ３の右供給開閉弁Ｒ７を開き、右排気開閉弁Ｒ９を閉じて、燃料を右蓄熱式バーナＲ３の燃料ノズルに供給することにより、燃焼室２内に火炎を生成する。このときも、吸気開閉弁１３は閉止されていて、燃焼により発生した排ガスは、左蓄熱式バーナＬ３の蓄熱室３ａに導入され、蓄熱体を昇温した後に、左排気開閉弁Ｌ９から排気管６を流通して煙突５から排出される。このように左蓄熱式バーナＬ３と右蓄熱式バーナＲ３とを交互に切り替えて、工業用炉１を稼働する。   Next, the left supply on / off valve L7 of the left heat storage burner L3 is closed, the left exhaust on / off valve L9 is opened, the right supply on / off valve R7 of the right heat storage burner R3 is opened, the right exhaust on / off valve R9 is closed, and fuel is supplied. A flame is generated in the combustion chamber 2 by supplying to the fuel nozzle of the right heat storage burner R3. Also at this time, the intake on / off valve 13 is closed, and the exhaust gas generated by combustion is introduced into the heat storage chamber 3a of the left heat storage burner L3, and after the temperature of the heat storage body is raised, the exhaust pipe is discharged from the left exhaust on / off valve L9. 6 is discharged from the chimney 5. In this manner, the industrial furnace 1 is operated by alternately switching the left heat storage burner L3 and the right heat storage burner R3.

工業用炉１の稼働時には、燃焼により発生する高温の排ガスが吸引ブロワ１０により、排気管６から煙突５に排出されるので、排気管６は高温の排ガスによって加熱される。他方、工業用炉１の非稼働時には、左供給開閉弁Ｌ７、左排気開閉弁Ｌ９、右供給開閉弁Ｒ７及び右排気開閉弁Ｒ９はいずれも閉止されていて、排ガスの発生及び流通はないが、排ガスにより加熱された排気管６内では、高温の排ガスが煙突５を上昇するように空気が移動していて、僅かなドラフト効果が生じている。このとき、排気管６に設けた吸気開閉弁１３が開放されることにより、外気が排気管６内に取り込まれ、排気管６内には、煙突５に向かって流れる強い気流が発生する。   When the industrial furnace 1 is in operation, the high-temperature exhaust gas generated by combustion is discharged from the exhaust pipe 6 to the chimney 5 by the suction blower 10, so that the exhaust pipe 6 is heated by the high-temperature exhaust gas. On the other hand, when the industrial furnace 1 is not in operation, the left supply on / off valve L7, the left exhaust on / off valve L9, the right supply on / off valve R7 and the right exhaust on / off valve R9 are all closed, and no exhaust gas is generated or distributed. In the exhaust pipe 6 heated by the exhaust gas, the air moves so that the high-temperature exhaust gas rises up the chimney 5, and a slight draft effect is produced. At this time, by opening the intake opening / closing valve 13 provided in the exhaust pipe 6, outside air is taken into the exhaust pipe 6, and a strong airflow flowing toward the chimney 5 is generated in the exhaust pipe 6.

排気管６には、吸引ブロワ１０が設けられている。排ガスが発生しない工業用炉１の非稼働時には、吸引ブロワ１０も駆動されない。しかしながら、吸引ブロワ１０の羽根車１０ａは、排気管６に連通された、吸引ブロワ１０のガス流路に位置されている。このため、羽根車１０ａは、吸気開閉弁１３が開放されると、排気管６に取り込まれて流れる外気により回転駆動される。吸引ブロワ１０の羽根車１０ａが回転駆動されると、吸引ブロワ１０の羽根車１０ａに接続されてこれを駆動するモータ１１は、ジェネレータとして機能される。これにより、電気エネルギが生成され、モータ１１に接続されたバッテリ１２に充電される。   The exhaust pipe 6 is provided with a suction blower 10. The suction blower 10 is not driven when the industrial furnace 1 that does not generate exhaust gas is not in operation. However, the impeller 10 a of the suction blower 10 is located in the gas flow path of the suction blower 10 communicated with the exhaust pipe 6. For this reason, the impeller 10a is rotationally driven by the outside air that is taken into the exhaust pipe 6 and flows when the intake on-off valve 13 is opened. When the impeller 10a of the suction blower 10 is driven to rotate, the motor 11 that is connected to and drives the impeller 10a of the suction blower 10 functions as a generator. Thereby, electric energy is generated and the battery 12 connected to the motor 11 is charged.

本実施形態の工業用炉１にあっては、開放されることによって、煙突５と接続される排気管６内に外気を取り込む吸気開閉弁１３が設けられているので、高温の排ガスにより加熱された排気管６の温度が高いときに、吸気開閉弁１３を開放することで、排気管６内に煙突５に向かう強い気流を発生させることができる。そして、排気管６には、排ガスを吸引するための吸引ブロワ１０が設けられているので、強い気流が発生した際には、排気管６に設けた吸引ブロワ１０の羽根車１０ａが回転駆動されるので、これにより、モータ１１をジェネレータとして回転駆動し発電することができる。   In the industrial furnace 1 of the present embodiment, the intake opening / closing valve 13 that takes in outside air into the exhaust pipe 6 connected to the chimney 5 by being opened is provided, so that it is heated by high-temperature exhaust gas. When the temperature of the exhaust pipe 6 is high, by opening the intake opening / closing valve 13, a strong air flow toward the chimney 5 can be generated in the exhaust pipe 6. Since the exhaust pipe 6 is provided with a suction blower 10 for sucking exhaust gas, the impeller 10a of the suction blower 10 provided in the exhaust pipe 6 is rotationally driven when a strong air flow is generated. Therefore, it is possible to generate electric power by rotating the motor 11 as a generator.

そしてまた、本実施形態では、工業用炉の省エネルギ稼働方法として、吸気開閉弁１３を開くステップと、吸気開閉弁１３から排気管６に取り込まれた外気の気流により、羽根車１０ａを回転させて発電するステップとを有していて、これにより、外気のドラフトを利用した省エネルギ化を促進することができる。   In the present embodiment, as an energy saving operation method for the industrial furnace, the impeller 10a is rotated by the step of opening the intake on-off valve 13 and the airflow of the outside air taken into the exhaust pipe 6 from the intake on-off valve 13. The step of generating electric power can be promoted, and thereby energy saving using a draft of outside air can be promoted.

さらに、上記構成では、専用のジェネレータを設けることなく、既存の工業用炉１の排気管６に、外気を取り込む吸気開閉弁１３を設けるだけで、発電可能な工業用炉１を構成することができる。すなわち、排気用の吸引ブロワ１０を備えた既存の工業用炉１に、当該吸引ブロワ１０へ外気を送り込む吸気開閉弁１３を設けるステップを備えることで、既存の工業用炉１を発電可能な工業用炉１に改造することができる。   Furthermore, in the above configuration, the industrial furnace 1 capable of generating electric power can be configured simply by providing the intake opening / closing valve 13 for taking outside air in the exhaust pipe 6 of the existing industrial furnace 1 without providing a dedicated generator. it can. That is, an existing industrial furnace 1 equipped with an exhaust suction blower 10 is provided with a step of providing an intake opening / closing valve 13 for sending outside air to the suction blower 10, thereby enabling the existing industrial furnace 1 to generate electricity. It can be modified to the furnace 1.

そして本実施形態の工業用炉１は、非稼働時に吸気開閉弁１３を開放して、外気で発電するので、排ガスで羽根車１０ａを回転して発電する場合と比べて、羽根車１０ａにスス等が付着することを確実に抑えることができる。このため、スス等が付着して、羽根車１０ａが回転し難くなる、あるいは回転不能になるというトラブル発生を防止でき、また、このようなトラブル発生を回避するための清掃も不要とすることができる。また、吸引ブロワ１０のモータ１１で生成しバッテリ１２に充電した電気エネルギは、どのような用途にも、例えば、次回稼働時に供給ブロワ８や吸引ブロワ１０を駆動するための電力として使用することができる。   And since the industrial furnace 1 of this embodiment opens the intake on-off valve 13 when it is not in operation and generates electric power with the outside air, compared with the case where the impeller 10a is rotated with exhaust gas to generate electric power, the impeller 10a has a soot. And the like can be reliably suppressed. For this reason, it is possible to prevent the occurrence of troubles that the soot or the like adheres and the impeller 10a becomes difficult or impossible to rotate, and cleaning for avoiding such troubles is also unnecessary. it can. In addition, the electric energy generated by the motor 11 of the suction blower 10 and charged in the battery 12 can be used as power for driving the supply blower 8 and the suction blower 10 for the next operation, for example. it can.

図２は、本発明に係る工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法の変形例を示す概略構成図である。   FIG. 2 is a schematic configuration diagram showing a modification of the industrial furnace, the energy saving operation method of the industrial furnace, and the modification method of the industrial furnace according to the present invention.

上記実施形態においては、発電用のジェネレータとして、吸引ブロワ１０のモータ１１を使用する例について説明したが、これに限るものではない。図２に示す変形例のように、煙突５に接続された排気管６に、排気管６内と工業用炉１の外部とを連通する分岐管１４を設け、分岐管１４内に羽根車が配置されるジェネレータ１５を備え、排気管６とジェネレータ１５との間に外気を取り込むための吸気開閉弁１３を設けるようにしても良い。   In the said embodiment, although the example which uses the motor 11 of the suction blower 10 as a generator for electric power generation was demonstrated, it does not restrict to this. As in the modification shown in FIG. 2, the exhaust pipe 6 connected to the chimney 5 is provided with a branch pipe 14 that communicates the inside of the exhaust pipe 6 and the outside of the industrial furnace 1, and an impeller is provided in the branch pipe 14. A generator 15 may be provided, and an intake opening / closing valve 13 for taking outside air may be provided between the exhaust pipe 6 and the generator 15.

この変形例にあっても、工業用炉１の非稼働時に吸気開閉弁１３を開放することにより、分岐管１４から外気（ＡＴＭ）が排気管６内に取り込まれると共に、排気管６内及び分岐管１４内に煙突５に向かって流れる強い気流が発生する。そして、分岐管１４に発生した強い気流により、羽根車が回転されて、当該羽根車に接続されたジェネレータ１５が電気エネルギを生成し、生成された電気エネルギはバッテリ１２に充電される。   Even in this modification, outside air (ATM) is taken into the exhaust pipe 6 from the branch pipe 14 by opening the intake on-off valve 13 when the industrial furnace 1 is not in operation, and the exhaust pipe 6 and the branch are also branched. A strong airflow that flows toward the chimney 5 is generated in the tube 14. The impeller is rotated by the strong airflow generated in the branch pipe 14, the generator 15 connected to the impeller generates electric energy, and the generated electric energy is charged in the battery 12.

変形例の場合には、羽根車を回転させるのは外気のみによる気流なので、たとえ工業用炉１が稼働中に吸気開閉弁１３を開放して発電をしても、羽根車にスス等が付着することはない。すなわち、変形例では、工業用炉１の稼働中であり、吸引ブロワ１０を発電に使えない時であっても発電することができる。また、工業用炉１の稼働中に発電できるので、ジェネレータ１５により発電した電気エネルギを用いて供給ブロワ８や吸引ブロワ１０を駆動することができる。   In the case of the modification, since the impeller is rotated only by the outside air, soot is attached to the impeller even if the intake opening / closing valve 13 is opened while the industrial furnace 1 is in operation. Never do. In other words, in the modified example, power can be generated even when the industrial furnace 1 is in operation and the suction blower 10 cannot be used for power generation. Further, since electric power can be generated while the industrial furnace 1 is in operation, the supply blower 8 and the suction blower 10 can be driven using the electric energy generated by the generator 15.

この変形例の上記構成では、既存の工業用炉１の排気管６に、外気を取り込む吸気開閉弁１３に加えて、分岐管とジェネレータを設けることにより、発電可能な工業用炉１を構成することができる。すなわち、排気管６を備えた既存の工業用炉１に、排気管６と工業用炉１の外部とを連通する分岐管１４と、分岐管１４内で回転可能な羽根車を備えたジェネレータ１５と、排気管６とジェネレータ１５との間に介設され、開放されて排気管６内に外気を取り込む吸気開閉弁１３とを設けるステップを備えることで、既存の工業用炉１を発電可能な工業用炉１に改造することができる。   In the above-described configuration of this modified example, the industrial furnace 1 capable of generating electric power is configured by providing a branch pipe and a generator in addition to the intake opening / closing valve 13 for taking outside air in the exhaust pipe 6 of the existing industrial furnace 1. be able to. That is, the existing industrial furnace 1 having the exhaust pipe 6 is connected to the branch pipe 14 that communicates the exhaust pipe 6 and the outside of the industrial furnace 1, and the generator 15 having an impeller that can rotate in the branch pipe 14. And an intake opening / closing valve 13 that is interposed between the exhaust pipe 6 and the generator 15 and is opened to take outside air into the exhaust pipe 6, so that the existing industrial furnace 1 can generate electric power. The industrial furnace 1 can be modified.

図３は、図２に示した変形例に関し、ジェネレータを複数備えた場合を示す概略構成図である。図示したように、分岐管１４には、複数のジェネレータ１５を設けても良く、その場合、バッテリ１２は、各ジェネレータ１５に対し個別に設けても、あるいは複数のジェネレータ１５に対し、単体で設けるようにしても良い。   FIG. 3 is a schematic configuration diagram showing a case where a plurality of generators are provided in the modification shown in FIG. As shown in the figure, the branch pipe 14 may be provided with a plurality of generators 15, in which case the battery 12 may be provided individually for each generator 15, or provided separately for the plurality of generators 15. You may do it.

図４は、本発明に係る工業用炉、工業用炉の省エネルギ稼働方法及び工業用炉の改造方法について、羽根車にシロッコファンを用いた場合を示す概略斜視図である。例えば、分岐管１４にジェネレータ１５を複数設ける場合には、図４に示すように、ジェネレータ１５の羽根車としてシロッコファン１６を使用することにより、省スペース化及び気流の圧損低減を図ることができる。   FIG. 4: is a schematic perspective view which shows the case where the sirocco fan is used for an impeller about the industrial furnace which concerns on this invention, the energy-saving operation method of an industrial furnace, and the modification method of an industrial furnace. For example, when a plurality of generators 15 are provided in the branch pipe 14, as shown in FIG. 4, the use of a sirocco fan 16 as the impeller of the generator 15 can save space and reduce air pressure loss. .

上記実施形態においては、工業用炉１として、蓄熱式交番燃焼バーナ３を用いた工業用炉１を例に挙げて説明したが、燃焼室２と煙突５を接続する排気管６を備えた工業用炉１であれば、どのような構成のものであってもよい。   In the above embodiment, the industrial furnace 1 using the regenerative alternating combustion burner 3 has been described as an example of the industrial furnace 1, but the industrial having the exhaust pipe 6 that connects the combustion chamber 2 and the chimney 5. As long as the furnace 1 is used, it may have any configuration.

また、ジェネレータ１５によって発電された電気は、一般周知のように、蓄電池（図示せず）に蓄えるようにしてもよいことはもちろんである。このようにすれば、いつでも任意の時に、上記工業用炉１で、あるいは他の設備でも利用することができるようになる。   Of course, the electricity generated by the generator 15 may be stored in a storage battery (not shown) as is generally known. In this way, the industrial furnace 1 or other equipment can be used anytime and at any time.

１ 工業用炉
２ 燃焼室
３ 蓄熱バーナ
３ａ 蓄熱室
４ 供給管
５ 煙突
６ 排気管
７ 供給開閉弁
８ 供給ブロワ
９ 排気開閉弁
１０ 吸引ブロワ
１０ａ 羽根車
１１ モータ
１２ バッテリ
１３ 吸気開閉弁
１４ 分岐管
１５ ジェネレータ
１６ シロッコファン
Ｌ３ 左蓄熱式バーナ
Ｌ７ 左供給開閉弁
Ｌ９ 左排気開閉弁
Ｒ３ 右蓄熱式バーナ
Ｒ７ 右供給開閉弁
Ｒ９ 右排気開閉弁 DESCRIPTION OF SYMBOLS 1 Industrial furnace 2 Combustion chamber 3 Thermal storage burner 3a Thermal storage chamber 4 Supply pipe 5 Chimney 6 Exhaust pipe 7 Supply on-off valve 8 Supply blower 9 Exhaust on-off valve 10 Suction blower 10a Impeller 11 Motor 12 Battery 13 Intake on-off valve 14 Branch pipe 15 Generator 16 Sirocco fan L3 Left heat storage burner L7 Left supply on / off valve L9 Left exhaust on / off valve R3 Right heat storage burner R7 Right supply on / off valve R9 Right exhaust on / off valve

Claims (8)

燃焼室と煙突を接続する排気管と、開放されて、上記排気管内に外気を取り込む開閉弁と、ジェネレータに接続され、開放された上記開閉弁から取り込まれて上記排気管を流れる外気により回転されて発電する羽根車とを備えたことを特徴とする工業用炉。   An exhaust pipe that connects the combustion chamber and the chimney, an open / close valve that opens and takes outside air into the exhaust pipe, and is connected to a generator and is rotated by outside air that is taken in from the open / close valve opened and flows through the exhaust pipe An industrial furnace comprising an impeller for generating electric power. 前記燃焼室の排ガスを吸引して前記煙突に送る吸引ブロワが、前記羽根車を有する前記ジェネレータを構成し、炉運転の非稼働時に、前記開閉弁が開放されることを特徴とする請求項１に記載の工業用炉。   The suction blower that sucks the exhaust gas in the combustion chamber and sends it to the chimney constitutes the generator having the impeller, and the open / close valve is opened when the furnace is not operating. Industrial furnace described in 1. 前記羽根車は、前記排気管に代えて、該排気管と炉外部とを連通する分岐管内に設けられ、前記開閉弁は、上記羽根車と上記排気管との間に設けられることを特徴とする請求項１に記載の工業用炉。   The impeller is provided in a branch pipe that communicates the exhaust pipe and the outside of the furnace, instead of the exhaust pipe, and the on-off valve is provided between the impeller and the exhaust pipe. The industrial furnace according to claim 1. 前記排気管は、蓄熱式交番燃焼バーナの排気管であることを特徴とする請求項１〜３いずれかの項に記載の工業用炉。   The industrial furnace according to any one of claims 1 to 3, wherein the exhaust pipe is an exhaust pipe of a regenerative alternating combustion burner. 請求項１〜４いずれかの項に記載の工業用炉を用い、
前記開閉弁を開くステップと、
前記開閉弁から取り込まれた外気による気流により、前記羽根車を回転させて発電するステップとを有することを特徴とする工業用炉の省エネルギー稼働方法。 Using the industrial furnace according to any one of claims 1 to 4,
Opening the on-off valve;
And a step of generating electricity by rotating the impeller by an air flow taken from outside air taken in from the on-off valve. 前記発電するステップにより発電された電気は、蓄電池に蓄えることを特徴とする請求項５に記載の工業用炉の省エネルギー稼働方法。   6. The energy saving operation method for an industrial furnace according to claim 5, wherein the electricity generated by the generating step is stored in a storage battery. 燃焼室と煙突を接続する排気管と、該燃焼室の排ガスを吸引して該煙突に送る吸引ブロワとを備えた既存の工業用炉に対し、開放されて該排気管内に外気を取り込む開閉弁を設けるステップを備えたことを特徴とする工業用炉の改造方法。   An open / close valve that opens and takes outside air into the exhaust pipe for an existing industrial furnace having an exhaust pipe that connects the combustion chamber and the chimney, and a suction blower that sucks exhaust gas from the combustion chamber and sends it to the chimney A method for remodeling an industrial furnace, comprising the step of: 燃焼室と煙突を接続する排気管を備えた既存の工業用炉に対し、該排気管と炉外部とを連通する分岐管と、該分岐管内で回転可能な羽根車を備えたジェネレータと、上記排気管と上記ジェネレータとの間に介設され、開放されて該排気管内に外気を取り込む開閉弁とを設けるステップを備えたことを特徴とする工業用炉の改造方法。   For an existing industrial furnace provided with an exhaust pipe connecting the combustion chamber and the chimney, a branch pipe communicating the exhaust pipe and the outside of the furnace, a generator provided with an impeller rotatable in the branch pipe, and the above A method for remodeling an industrial furnace, comprising a step of providing an open / close valve interposed between an exhaust pipe and the generator and opened to take outside air into the exhaust pipe.
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CN113983818A (en) * 2021-09-22 2022-01-28 拓正化工工程(上海)有限公司 Health care and predictive maintenance system for industrial furnace equipment

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