TWI704324B - Industrial furnace and combustion control method for industrial furnace - Google Patents

Industrial furnace and combustion control method for industrial furnace Download PDF

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Publication number
TWI704324B
TWI704324B TW108123259A TW108123259A TWI704324B TW I704324 B TWI704324 B TW I704324B TW 108123259 A TW108123259 A TW 108123259A TW 108123259 A TW108123259 A TW 108123259A TW I704324 B TWI704324 B TW I704324B
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fuel
combustion
combustion air
furnace
supply pipe
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TW108123259A
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TW202020388A (en
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河本祐作
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日商中外爐工業股份有限公司
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/28—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/02—Arrangements of regenerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/007—Regulating fuel supply using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/26—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05001—Measuring CO content in flue gas
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Supply (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

This invention provides an industrial furnace in which combustion air A1 is mixed with fuel F and the fuel F is burned. The industrial furnace comprises first and second contact hybrid combustion mechanisms in which fuels F1 and F2 are brought into contact with and mixed from a first fuel supply pipe 31 and a second fuel supply pipe 32, respectively and to be supplied from a combustion air supply pipe 20 to a furnace 10 to be burned with the combustion air A1 inside; and a non-contact combustion mechanism which supplies a fuel F3 from a third fuel supply pipe 33 to the furnace 10 in a manner that the fuel F3 is not in direct contact with the combustion air A1 supplied from the combustion air supply pipe 20 into the furnace 10, and the fuel F3 is mixed with the combustion air A1 contained in a combustion exhaust gas A2 and burned.

Description

工業爐及工業爐的燃燒控制方法 Industrial furnace and combustion control method of industrial furnace

本發明係關於一種使燃燒用空氣與燃料混合並使燃料燃燒之工業爐。特別是，在下列的點具有特徵：在使燃燒用空氣與燃料混合並使之燃燒時，可比以往之情形更抑制燃燒時之火焰溫度變高，或NOx之產生量變多之情形，可獲得穩定之環境條件，並且可穩定地進行效率佳之燃燒。 The present invention relates to an industrial furnace that mixes combustion air with fuel and burns the fuel. In particular, it has characteristics in the following points: when the combustion air and fuel are mixed and burned, the flame temperature during combustion can be suppressed more than in the past, or the amount of NOx produced increases, and stability can be obtained. The environmental conditions, and can stably carry out efficient combustion.

以往，在加熱爐等工業爐中，進行使燃燒用空氣與燃料混合並使燃料燃燒，且在使之燃燒的爐內對被處理物進行加熱處理。 Conventionally, in industrial furnaces such as heating furnaces, the combustion air and fuel are mixed and the fuel is burned, and the object to be processed is heated in the furnace that burns it.

並且，在該工業爐中，在使燃燒用空氣與燃料混合並使燃料燃燒時，以往例如專利文獻1或專利文獻2等所示，已知有一種使經由燃燒用空氣供給管而供給之燃燒用空氣、與經由燃料供給管而供給之燃料混合，如此在與燃燒用空氣混合之燃料在爐內燃燒之技術，或將燃料從燃料供給管供給至從燃燒用空氣供給管供給至爐內之燃燒用空氣，且以使在爐內供給之燃燒用空氣與前述燃料接觸之方式使之混合並使燃料燃燒的技術。 In addition, in this industrial furnace, when the combustion air is mixed with the fuel and the fuel is burned, for example, as shown in Patent Literature 1 or Patent Literature 2, there is known a combustion method that is supplied through a combustion air supply pipe. A technology in which air is mixed with fuel supplied through a fuel supply pipe, so that the fuel mixed with combustion air is burned in the furnace, or fuel is supplied from the fuel supply pipe to the combustion air supply pipe into the furnace Combustion air is a technology that mixes the combustion air supplied in the furnace with the aforementioned fuel and burns the fuel.

在此，將燃料從燃料供給管供給至經由燃燒用空氣供給管而供給之燃燒用空氣，並使燃燒用空氣與燃料混合並使燃料燃燒時，燃燒用空氣與燃料會快速地混合而燃燒，因此一般而言，燃燒時之火焰的溫度會變高，且可使爐內之溫度迅速地上升，當在該狀態下持續進行燃燒時，就會有NOx之產生量變多的問題。 Here, when the fuel is supplied from the fuel supply pipe to the combustion air supplied through the combustion air supply pipe, and the combustion air is mixed with the fuel and the fuel is burned, the combustion air and the fuel are rapidly mixed and burned. Therefore, generally speaking, the temperature of the flame during combustion becomes higher, and the temperature in the furnace can be increased rapidly. When the combustion continues in this state, there will be a problem that the amount of NOx generated increases.

再者，將燃料從燃料供給管供給至從燃燒用空氣供給管供給至爐內之燃燒用空氣，且以使燃料在爐內與燃燒用空氣接觸之方式使之混合並使燃料燃燒時，燃料會慢慢地與燃燒用空氣接觸同時燃燒，與如前述方式使經由燃燒用空氣供給管而供給之燃燒用空氣與從燃料供給管供給之燃料直接混合並使之燃燒之情形相比較，可使NOx之產生量減少。 Furthermore, when the fuel is supplied from the fuel supply pipe to the combustion air supplied from the combustion air supply pipe to the furnace, and the fuel is mixed in such a way that the fuel is in contact with the combustion air in the furnace and the fuel is burned, the fuel It will slowly contact the combustion air and simultaneously burn. Compared with the situation where the combustion air supplied through the combustion air supply pipe and the fuel supplied from the fuel supply pipe are directly mixed and burned as described above, it can be The amount of NOx produced is reduced.

然而，近年來，為了充分地抑制因NOx所造成的大氣汚染或對人體造成的不良影響，以獲得安全之環境條件，因此期待使NOx之產生量更加減少，且期待有使燃燒時之NOx的產生量更為減少之工業爐。 However, in recent years, in order to sufficiently suppress the air pollution caused by NOx or the adverse effects on the human body, and to obtain safe environmental conditions, it is expected that the amount of NOx produced will be further reduced, and it is expected that the NOx during combustion Industrial furnaces with reduced production.

(先前技術文獻) (Prior technical literature) (專利文獻) (Patent Document)

專利文獻1：日本特許第3031908號公報 Patent Document 1: Japanese Patent No. 3031908

專利文獻2：特許第5171065號公報 Patent Document 2: Patent No. 5171065

本發明之課題係在於解決使燃燒用空氣與燃料混合並使燃料燃燒之工業爐中的前述問題。 The subject of the present invention is to solve the aforementioned problems in an industrial furnace that mixes combustion air with fuel and burns the fuel.

亦即，在本發明之工業爐中，其課題在於：在使燃燒用空氣與燃料混合並使之燃燒時，可比以往的情形更抑制在燃燒時的火焰溫度變高以致於爐內溫度上升而使NOx之產生量變多之情形，可獲得穩定的環境條件，並且可穩定地進行效率佳的燃燒。 That is, in the industrial furnace of the present invention, the problem is that when the combustion air and fuel are mixed and burned, the flame temperature during combustion can be suppressed more than in the conventional case, so that the temperature in the furnace rises. When the amount of NOx produced is increased, stable environmental conditions can be obtained, and efficient combustion can be carried out stably.

在本發明之工業爐中，為了解決前述之課題，在使燃燒用空氣與燃料混合並使燃料燃燒之工業爐中，設置有：接觸混合式燃燒機構，係使燃料與從燃燒用空氣供給管供給至爐內之燃燒用空氣接觸並混合而使燃料燃燒；以及非接觸式燃燒機構，係以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒；並且設置控制機構作為控制該工業爐之控制機構，該控制機構係進行下列控制：藉由前述接觸混合式燃燒機構，使從燃燒用空氣供給管所供給之燃燒用空氣與燃料混合並使燃料燃燒，且在使爐內溫度上升至燃料之自燃溫度之後，當爐內之NOx的產生量增加時，使在接觸混合式燃燒機構中供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前 述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣混合」並使之燃燒。 In the industrial furnace of the present invention, in order to solve the aforementioned problems, an industrial furnace that mixes combustion air and fuel and burns the fuel is provided with a contact mixing combustion mechanism that makes the fuel and the combustion air supply pipe The combustion air supplied to the furnace contacts and mixes to burn the fuel; and the non-contact combustion mechanism is oriented in a direction away from the combustion air supplied from the combustion air supply pipe to the furnace without being combusted. The fuel is supplied into the furnace by direct air contact, and the fuel is mixed with the combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism and burned ; And set up a control mechanism as a control mechanism to control the industrial furnace, the control mechanism is to perform the following control: by the aforementioned contact mixing combustion mechanism, the combustion air supplied from the combustion air supply pipe and fuel mix and make the fuel After the furnace temperature is raised to the auto-ignition temperature of the fuel, the amount of NOx generated in the furnace increases, and the amount of fuel supplied in the contact hybrid combustion mechanism is reduced. On the other hand, by the aforementioned non-combustion The contact type combustion mechanism supplies fuel into the furnace in a direction away from the combustion air supplied into the furnace from the combustion air supply pipe and does not directly contact the aforementioned combustion air. Included in "by before The contact mixing type combustion mechanism mixes the combustion air in the combustion exhaust gas after the fuel is burned, and burns it.

在此，在本發明之工業爐中，就前述接觸混合式燃燒機構而言，可設置有：第1接觸混合式燃燒機構，係朝經由燃燒用空氣供給管供給之燃燒用空氣，將燃料從第1燃料供給管供給至燃燒用空氣供給管內，並且使燃料在燃燒用空氣供給管內與燃燒用空氣混合並使之燃燒；以及第2接觸混合式燃燒機構，係將燃料從第2燃料供給管供給至從燃燒用空氣供給管供給至爐內的燃燒用空氣，並以使燃料在爐內與燃燒用空氣接觸之方式混合並使燃料燃燒；惟較佳為至少設置前述第2接觸混合式燃燒機構。 Here, in the industrial furnace of the present invention, the contact mixing combustion mechanism described above may be provided with: a first contact mixing combustion mechanism that uses combustion air supplied through a combustion air supply pipe to remove fuel from The first fuel supply pipe is supplied to the combustion air supply pipe, and the fuel is mixed with the combustion air in the combustion air supply pipe and combusted; and the second contact mixing combustion mechanism is to take the fuel from the second fuel The supply pipe supplies the combustion air supplied from the combustion air supply pipe to the furnace, and mixes the fuel in the furnace to contact the combustion air and burns the fuel; however, it is preferable to provide at least the aforementioned second contact mixing Type combustion mechanism.

再者，在本發明之前述工業爐中，就前述之非接觸式燃燒機構而言，具有以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內之第3燃料供給管，並且可採用使從該第3燃料供給管所供給之燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 Furthermore, in the aforementioned industrial furnace of the present invention, the aforementioned non-contact combustion mechanism has a direction that is separated from the combustion air supplied from the combustion air supply pipe into the furnace and does not interfere with the aforementioned combustion. The fuel is supplied to the third fuel supply pipe in the furnace by direct contact with air, and the fuel supplied from the third fuel supply pipe can be combined with the fuel contained in the contact mixing combustion mechanism described above. The combustion air in the combustion exhaust after combustion is mixed and burned.

再者，在前述之工業爐中，可於與前述接觸混合式燃燒機構相隔之非接觸式燃燒機構的第3燃料供給管之附近的爐內，設置檢測包含在燃燒排氣中的氧氣與一氧化碳之至少一者之濃度的濃度感測器。 Furthermore, in the aforementioned industrial furnace, it is possible to install the detection of oxygen and carbon monoxide contained in the combustion exhaust gas in the furnace near the third fuel supply pipe of the non-contact combustion mechanism separated from the contact hybrid combustion mechanism. A concentration sensor for at least one of the concentration.

再者，在本發明之前述工業爐中，以成對之方式設置前述燃燒用空氣供給管，並且在成對之各燃燒用空氣供給管分別設置蓄熱部，該蓄熱部係收容有蓄熱材，藉由收容在前述蓄熱部之蓄熱材使經由一方之燃燒用空氣供給管供給之燃燒用空氣加熱，另一方面，經由另一方之燃燒用 空氣供給管將爐內之燃燒排氣導出至收容有前述蓄熱材之蓄熱部，且使燃燒排氣之熱蓄熱於蓄熱部之蓄熱材並使之排氣。如此，可經由使燃料燃燒後之燃燒排氣的熱蓄熱的蓄熱部，使經由燃燒用空氣供給管而供給之燃燒用空氣加熱，且可有效地利用燃燒排氣之熱。 Furthermore, in the industrial furnace of the present invention, the combustion air supply pipes are provided in pairs, and each of the pair of combustion air supply pipes is provided with a heat storage unit, and the heat storage unit contains a heat storage material, The combustion air supplied through the combustion air supply pipe on one side is heated by the heat storage material housed in the heat storage part, and on the other hand, through the combustion air supply pipe on the other side. The air supply pipe leads the combustion exhaust gas in the furnace to the heat storage part containing the aforementioned heat storage material, and stores the heat of the combustion exhaust gas in the heat storage material of the heat storage part and exhausts it. In this way, the combustion air supplied through the combustion air supply pipe can be heated through the heat storage unit that stores the heat of the combustion exhaust gas after the fuel is burned, and the heat of the combustion exhaust gas can be effectively used.

在此，在本發明之前述工業爐中，設置控制工業爐之控制機構，利用該控制機構，並藉由前述接觸混合式燃燒機構，使從燃燒用空氣供給管供給之燃燒用空氣與燃料混合並使燃料燃燒，在使爐內溫度上升至燃料之自燃溫度之後，當爐內之NOx的產生量增加時，使在接觸混合式燃燒機構中供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，朝與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向將燃料供給至爐內，且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 Here, in the industrial furnace of the present invention, a control mechanism for controlling the industrial furnace is provided, and the control mechanism is used to mix the combustion air and fuel supplied from the combustion air supply pipe by the contact mixing combustion mechanism. The fuel is burned. After the temperature in the furnace rises to the autoignition temperature of the fuel, when the amount of NOx produced in the furnace increases, the amount of fuel supplied in the contact hybrid combustion mechanism is reduced. On the other hand, by The aforementioned non-contact combustion mechanism supplies fuel into the furnace in a direction away from the combustion air supplied from the combustion air supply pipe to the furnace, and makes the fuel and the fuel contained in the "contact mixing combustion mechanism described above" The combustion air in the combustion exhaust after the fuel is burned is mixed and combusted.

設成如此，藉由接觸混合式燃燒機構所供給之燃料大多被燃燒，而可抑制NOx之產生量增加之情形，並且可藉由非接觸式燃燒機構，並利用朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向供給至爐內的燃料使包含於「藉由前述接觸混合式燃燒機構使燃料燃燒後之燃燒排氣中的燃燒用空氣」燃燒，而可有效地利用從燃燒用空氣供給管供給之燃燒用空氣，且可有效率地使燃料燃燒。 With this configuration, most of the fuel supplied by the contact mixing combustion mechanism is burned, and the increase in the amount of NOx produced can be suppressed, and the non-contact combustion mechanism can be used to use the direction and the combustion air supply pipe The fuel supplied to the furnace in the direction in which the combustion air supplied to the furnace is spaced apart, combusts the "combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism", and can be effectively used The combustion air is supplied from the combustion air supply pipe, and the fuel can be combusted efficiently.

並且，在本發明之前述工業爐中，就前述接觸混合式燃燒機構而言，較佳為設置前述第1接觸混合式燃燒機構與第2接觸混合式燃燒機構，並且藉由前述第1接觸混合式燃燒機構而使從燃燒用空氣供給管所供給之燃燒用空氣與從第1燃料供給管所供給之燃料混合，並使燃料燃燒， 以使爐內溫度上升至燃料之自燃溫度，在使第1接觸混合式燃燒機構停止之後，藉由前述第2接觸混合式燃燒機構，將燃料從第2燃料供給管供給至從燃燒用空氣供給管供給至爐內的燃燒用空氣，且以使燃料在爐內與燃燒用空氣接觸之方式使之混合並使燃料燃燒，然後當NOx之產生量因第2接觸混合式燃燒機構所產生之燃燒而增加時，使從第2燃料供給管供給之燃料之量減少，另一方面，藉由前述非接觸式燃燒機構，以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料從第3燃料供給管供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 In addition, in the industrial furnace of the present invention, it is preferable that the first contact mixing combustion mechanism and the second contact mixing combustion mechanism are provided with the contact mixing combustion mechanism, and the first contact mixing combustion mechanism Type combustion mechanism to mix the combustion air supplied from the combustion air supply pipe with the fuel supplied from the first fuel supply pipe, and burn the fuel, After stopping the first contact mixing combustion mechanism to raise the furnace temperature to the autoignition temperature of the fuel, the second contact mixing combustion mechanism is used to supply fuel from the second fuel supply pipe to the combustion air supply The tube supplies the combustion air in the furnace, and mixes the fuel in the furnace to contact the combustion air, and burns the fuel. Then, the amount of NOx generated is burned by the second contact mixing combustion mechanism When it increases, the amount of fuel supplied from the second fuel supply pipe is reduced. On the other hand, by the non-contact combustion mechanism described above, the direction is separated from the combustion air supplied from the combustion air supply pipe to the furnace Directly without direct contact with the aforementioned combustion air, the fuel is supplied from the third fuel supply pipe into the furnace, and the fuel is included in the "combustion after the fuel is combusted by the aforementioned contact mixing combustion mechanism" The combustion air in the exhaust gas is mixed and combusted.

如此，藉由前述第1接觸混合式燃燒機構，可使從燃燒用空氣供給管所供給之燃燒用空氣與從第1燃料供給管所供給之燃料混合並使燃料燃燒，且使爐內溫度迅速地上升至燃料之自燃溫度。並且，在使爐內溫度上升至燃料之自燃溫度之後，使第1接觸混合式燃燒機構停止，並藉由前述第2接觸混合式燃燒機構，將燃料從第2燃料供給管供給至從燃燒用空氣供給管供給至爐內的燃燒用空氣，並且以使燃料在爐內與燃燒用空氣接觸之方式使之混合並燃料燃燒時，與藉由第1接觸混合式燃燒機構而使燃料燃燒之情形相比較，可抑制燃料之燃燒變緩慢，且爐內溫度急遽上升之情形，且抑制NOx之產生量增加。 In this way, by the aforementioned first contact mixing combustion mechanism, the combustion air supplied from the combustion air supply pipe can be mixed with the fuel supplied from the first fuel supply pipe to combust the fuel, and the furnace temperature can be increased. The earth rises to the auto-ignition temperature of the fuel. And after raising the furnace temperature to the autoignition temperature of the fuel, the first contact mixing combustion mechanism is stopped, and the second contact mixing combustion mechanism is used to supply fuel from the second fuel supply pipe to the combustion When the air supply pipe supplies the combustion air in the furnace and mixes and burns the fuel so that the fuel is in contact with the combustion air in the furnace, and when the fuel is burned by the first contact mixing combustion mechanism In comparison, the combustion of fuel can be suppressed from slowing down and the temperature in the furnace rises sharply, and the increase in NOx production can be suppressed.

並且，藉由前述第2接觸混合式燃燒機構，將燃料從第2燃料供給管供給至從燃燒用空氣供給管供給至爐內的燃燒用空氣，並且以使燃料在爐內與燃燒用空氣接觸之方式使之混合並燃料燃燒時，當爐內溫度 上升且NOx之產生量增加時，如前所述使從第2燃料供給管供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，以不會與從燃燒用空氣供給管供給至爐內之燃燒用空氣直接接觸的方式，且朝與前述燃燒用空氣相隔之方向將燃料從第3燃料供給管供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒，藉此抑制爐內溫度上升並予以維持，且抑制NOx之產生，並有效地利用包含在燃燒排氣中的燃燒用空氣，以進行效率佳之燃燒。 In addition, by the aforementioned second contact mixing combustion mechanism, fuel is supplied from the second fuel supply pipe to the combustion air supplied from the combustion air supply pipe into the furnace, and the fuel is brought into contact with the combustion air in the furnace Way to mix and burn the fuel, when the furnace temperature When the amount of NOx generated increases and the amount of NOx is increased, the amount of fuel supplied from the second fuel supply pipe is reduced as described above. On the other hand, the non-contact combustion mechanism described above prevents the combustion air supply pipe The combustion air supplied to the furnace is in direct contact with the combustion air, and the fuel is supplied into the furnace from the third fuel supply pipe in a direction away from the combustion air, and the fuel is mixed with the fuel contained in the "by the aforementioned contact mixing type The combustion mechanism mixes and burns the combustion air in the combustion exhaust gas after the fuel is burned, thereby suppressing and maintaining the temperature rise in the furnace, suppressing the generation of NOx, and effectively using the combustion exhaust gas contained in it The combustion air is used for efficient combustion.

再者，在本發明之前述工業爐中，如前所述，較佳為當NOx之產生量因第2接觸混合式燃燒機構之燃燒而增加時，使從第2燃料供給管供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，以不會與從燃燒用空氣供給管供給至爐內之燃燒用空氣直接接觸的方式，朝與前述燃燒用空氣相隔之方向將燃料從第3燃料供給管供給至爐內，且設置濃度感測器，該濃度感測器係在使該燃料與包含在燃燒排氣中的燃燒用空氣混合並使之燃燒時，檢測於第3燃料供給管之附近的爐內，包含在燃燒排氣中的氧氣與一氧化碳之至少一種之濃度，依據由前述濃度感測器所檢測之氧氣與一氧化碳之至少一種之濃度，來控制從前述第2燃料供給管供給之燃料的量、及從前述第3燃料供給管供給之燃料的量。 Furthermore, in the aforementioned industrial furnace of the present invention, as described above, it is preferable that when the amount of NOx generated by the second contact mixing combustion mechanism increases, the fuel supplied from the second fuel supply pipe is On the other hand, the non-contact combustion mechanism prevents direct contact with the combustion air supplied from the combustion air supply pipe to the furnace, and the fuel is moved away from the combustion air. It is supplied into the furnace from the third fuel supply pipe, and a concentration sensor is installed. The concentration sensor detects when the fuel is mixed with the combustion air contained in the combustion exhaust gas and burned. In the furnace near the fuel supply pipe, the concentration of at least one of oxygen and carbon monoxide contained in the combustion exhaust gas is controlled based on the concentration of at least one of oxygen and carbon monoxide detected by the concentration sensor. The amount of fuel supplied from the fuel supply pipe and the amount of fuel supplied from the aforementioned third fuel supply pipe.

在此，當由前述濃度感測器所檢測出之氧氣濃度降低至預定值或一氧化碳濃度成為預定值以上時，會成為從第3燃料供給管供給之燃料無法適當地燃燒而過度存在之狀態，因此有該燃料爆發之危險性，此時使從第3燃料供給管供給之燃料的量減少，並且使從第2燃料供給管供給 之燃料的量增加。如此，若控制從第3燃料供給管供給之燃料的量、及從第2燃料供給管供給之燃料的量，則藉由燃燒而抑制NOx之產生，並且進行安全之燃燒。 Here, when the oxygen concentration detected by the aforementioned concentration sensor drops to a predetermined value or the carbon monoxide concentration becomes more than a predetermined value, the fuel supplied from the third fuel supply pipe cannot be properly burned and is excessively present. Therefore, there is a risk of the fuel explosion. At this time, the amount of fuel supplied from the third fuel supply pipe is reduced, and the fuel supplied from the second fuel supply pipe The amount of fuel increased. In this way, if the amount of fuel supplied from the third fuel supply pipe and the amount of fuel supplied from the second fuel supply pipe are controlled, the generation of NOx is suppressed by combustion, and safe combustion is performed.

在本發明之工業爐中，設置有：接觸混合式燃燒機構，係使燃料接觸並混合於從燃燒用空氣供給管供給至爐內之燃燒用空氣並使燃料燃燒；以及非接觸式燃燒機構，係以不會朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒；並且設置控制該工業爐之控制機構，利用該控制機構，藉由前述接觸混合式燃燒機構，使從燃燒用空氣供給管供給之燃燒用空氣與燃料混合並使燃料燃燒，且在使爐內溫度上升至燃料之自燃溫度之後，當爐內之NOx的產生量增加時，使在接觸混合式燃燒機構中供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 The industrial furnace of the present invention is provided with: a contact-mixing combustion mechanism that brings fuel into contact with and mixes with the combustion air supplied into the furnace from the combustion air supply pipe to burn the fuel; and a non-contact combustion mechanism, The fuel is supplied into the furnace without direct contact with the aforementioned combustion air in the direction away from the combustion air supplied into the furnace from the combustion air supply pipe, and the fuel is brought into contact with the combustion air The aforementioned contact mixing combustion mechanism mixes and combusts the combustion air in the combustion exhaust gas after the fuel is burned; and a control mechanism for controlling the industrial furnace is provided, and the control mechanism is used by the aforementioned contact mixing combustion mechanism , The combustion air supplied from the combustion air supply pipe is mixed with the fuel and the fuel is burned, and after the furnace temperature rises to the auto-ignition temperature of the fuel, when the NOx production in the furnace increases, the contact mixing The amount of fuel supplied in the type combustion mechanism is reduced. On the other hand, the non-contact combustion mechanism described above is directed to a direction away from the combustion air supplied from the combustion air supply pipe to the furnace without being combusted. The fuel is supplied into the furnace by direct air contact, and the fuel is mixed with the combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism and burned .

結果，在本發明之工業爐中，藉由接觸混合式燃燒機構所供給之燃料大多被燃燒，而可抑制NOx之產生量的增加，並且可利用由非接觸式燃燒機構所供給之燃料使包含在燃燒排氣中的燃燒用空氣無浪費地燃 燒，且可有效地利用從燃燒用空氣供給管所供給之燃燒用空氣，有效率地使燃料燃燒。 As a result, in the industrial furnace of the present invention, most of the fuel supplied by the contact mixing combustion mechanism is burned, and the increase in the amount of NOx generated can be suppressed, and the fuel supplied by the non-contact combustion mechanism can be used to contain The combustion air in the combustion exhaust burns without waste Combustion, and can effectively use the combustion air supplied from the combustion air supply pipe to efficiently burn the fuel.

10‧‧‧爐 10‧‧‧Stove

11‧‧‧爐壁 11‧‧‧furnace wall

20‧‧‧燃燒用空氣供給管 20‧‧‧Air supply pipe for combustion

21‧‧‧蓄熱部 21‧‧‧Heat storage

21a‧‧‧蓄熱材 21a‧‧‧Heat storage material

31‧‧‧第1燃料供給管 31‧‧‧The first fuel supply pipe

31a‧‧‧第1閥 31a‧‧‧The first valve

32‧‧‧第2燃料供給管 32‧‧‧Second fuel supply pipe

32a‧‧‧第2閥 32a‧‧‧Second valve

33‧‧‧第3燃料供給管 33‧‧‧The third fuel supply pipe

33a‧‧‧第3閥 33a‧‧‧3rd valve

40‧‧‧控制裝置 40‧‧‧Control device

41‧‧‧濃度感測器 41‧‧‧Concentration Sensor

A1‧‧‧燃燒用空氣 A1‧‧‧Air for combustion

A2‧‧‧燃燒排氣 A2‧‧‧Combustion exhaust

F(F1至F3)‧‧‧燃料 F (F1 to F3)‧‧‧Fuel

第1圖係在本發明實施形態之工業爐中，顯示設置有第1及第2接觸混合式燃燒機構及非接觸式燃燒機構之狀態的概略剖視圖，該第1及第2接觸混合式燃燒機構係作為於爐之相對向的一對爐壁分別設置使蓄熱材收容於燃燒用空氣供給管之蓄熱部的一對蓄熱式之燃燒機構，並且使燃料接觸並混合於從燃燒用空氣供給管供給至爐內之燃燒用空氣，並使燃料燃燒者，該非接觸式燃燒機構係以不會與從燃燒用空氣供給管供給至爐內之燃燒用空氣直接接觸之方式，將燃料供給至爐內，並使該燃料與包含在燃燒排氣中的燃燒用空氣混合並使之燃燒。 Figure 1 is a schematic cross-sectional view showing a state in which first and second contact mixing combustion mechanisms and non-contact combustion mechanisms are installed in an industrial furnace according to an embodiment of the present invention. The first and second contact mixing combustion mechanisms As a pair of furnace walls facing the furnace, a pair of regenerative combustion mechanisms are provided to house the heat storage material in the heat storage part of the combustion air supply pipe, and the fuel is brought into contact and mixed with the fuel supplied from the combustion air supply pipe. To the combustion air in the furnace and burn the fuel, the non-contact combustion mechanism is to supply fuel into the furnace in a way that does not directly contact the combustion air supplied from the combustion air supply pipe to the furnace. The fuel is mixed with the combustion air contained in the combustion exhaust gas and burned.

第2圖係在前述實施形態之工業爐中，利用第1及第2接觸混合式燃燒機構及非接觸式燃燒機構使從前述燃燒用空氣供給管供給之燃燒空氣與燃料燃燒之狀態，(A)係在第1接觸混合式燃燒機構中，顯示對於經由燃燒用空氣供給管供給之燃燒用空氣，以從第1燃料供給管使燃料直接混合之方式供給並使之燃燒之狀態的局部概略剖視圖、(B)係停止從前述第1燃料供給管供給燃料，且在第2接觸混合式燃燒機構中，顯示將燃料從第2燃料供給管供給至經由燃燒用空氣供給管供給之燃燒用空氣，且以在爐內與燃燒用空氣接觸之方式使該燃料混合並使之燃燒的狀態之局部概略剖視圖，(C)係顯示一面組合前述第2接觸混合式燃燒機構與前述非接觸式燃燒機構並抑制NOx之產生，一面使燃料燃燒之狀態的局部概略剖視圖。 Figure 2 shows the state where the first and second contact mixing combustion mechanism and non-contact combustion mechanism are used to burn the combustion air and fuel supplied from the combustion air supply pipe in the industrial furnace of the foregoing embodiment, (A ) Is a partial schematic cross-sectional view of the first contact mixing combustion mechanism, showing a state where the combustion air supplied through the combustion air supply pipe is directly mixed and combusted from the first fuel supply pipe , (B) is to stop the fuel supply from the first fuel supply pipe, and in the second contact hybrid combustion mechanism, it is shown that the fuel is supplied from the second fuel supply pipe to the combustion air supplied through the combustion air supply pipe, And a partial schematic cross-sectional view of the state where the fuel is mixed and burned in contact with the combustion air in the furnace. (C) shows a combination of the second contact mixing combustion mechanism and the non-contact combustion mechanism. A partial schematic cross-sectional view of the state where the fuel is combusted while suppressing the generation of NOx.

依據附圖具體地說明本發明實施形態之工業爐。此外，本發明之工業爐係不限定於下述實施形態所示者，在不變更本發明之要旨的範圍內，可適當地變更實施者。 The industrial furnace according to the embodiment of the present invention will be specifically explained based on the drawings. In addition, the industrial furnace of the present invention is not limited to those shown in the following embodiments, and the implementers can be appropriately changed within a range that does not change the gist of the present invention.

在本實施形態之工業爐中，如第1圖所示，在爐10之相對向之一對爐壁11，分別以成對之方式設置燃燒用空氣供給管20，並且在成對之各燃燒用空氣供給管20分別設置收容有蓄熱材21a之蓄熱部21，且藉由收容在前述蓄熱部21而蓄熱之蓄熱材21a使經由一方之燃燒用空氣供給管20而供給至10內之燃燒用空氣A1加熱，另一方面，使在爐10內使燃料F(F1至F3)燃燒後之燃燒排氣A2經由另一方之燃燒用空氣供給管20導引至前述蓄熱部21，並且使該燃燒排氣A2之熱蓄熱在收容於該蓄熱部21之蓄熱材21a，並且從燃燒用空氣供給管20排氣。 In the industrial furnace of the present embodiment, as shown in Figure 1, in a pair of furnace walls 11 facing the furnace 10, combustion air supply pipes 20 are provided in pairs, and each pair of combustion The air supply pipe 20 is provided with a heat storage unit 21 containing a heat storage material 21a, and the heat storage material 21a stored in the heat storage unit 21 is supplied to the combustion air supply pipe 20 through one of the combustion air supply pipes. The air A1 is heated, and on the other hand, the combustion exhaust gas A2 after burning the fuel F (F1 to F3) in the furnace 10 is guided to the heat storage part 21 via the other combustion air supply pipe 20, and the combustion The heat of the exhaust gas A2 is stored in the heat storage material 21a housed in the heat storage unit 21, and is exhausted from the combustion air supply pipe 20.

並且，在該實施形態之工業爐中，係設置有：第1接觸混合式燃燒機構，對前述各燃燒用空氣供給管20，將燃料F1從第1燃料供給管31分別供給至經由燃燒用空氣供給管20供給之燃燒用空氣A1，並使燃料F1與燃燒用空氣A1混合並使之燃燒；第2接觸混合式燃燒機構，係將燃料F2從第2燃料供給管32供給至從燃燒用空氣供給管20供給至爐10內之燃燒用空氣A1，並且以使該燃料F2在爐10內與燃燒用空氣A1接觸之方式使之混合並使燃料F2燃燒；以及非接觸式燃燒機構，係朝向與從燃燒用空氣供給管20供給至爐10內之燃燒用空氣A1相隔之方向，以不會與前述燃燒用空氣A1直接接觸之方式將燃料F3從第3燃料供給管33 供給至爐10內，且藉由前述第1接觸混合式燃燒機構或第2接觸混合式燃燒機構使該燃料F3與燃燒用空氣A1混合並使之燃燒，該燃燒用空氣A1係包含於在爐10內燃燒燃料F1、F2後之燃燒排氣A2中。 In addition, in the industrial furnace of this embodiment, a first contact mixing combustion mechanism is provided to supply the fuel F1 from the first fuel supply pipe 31 to the combustion air supply pipes 20. The combustion air A1 supplied by the supply pipe 20 mixes and burns the fuel F1 and the combustion air A1; the second contact mixing combustion mechanism supplies the fuel F2 from the second fuel supply pipe 32 to the combustion air The supply pipe 20 supplies the combustion air A1 in the furnace 10, and mixes the fuel F2 in the furnace 10 in contact with the combustion air A1 and burns the fuel F2; and a non-contact combustion mechanism, which faces In a direction away from the combustion air A1 supplied from the combustion air supply pipe 20 to the furnace 10, the fuel F3 is fed from the third fuel supply pipe 33 so as not to directly contact the combustion air A1. It is supplied into the furnace 10, and the fuel F3 is mixed with the combustion air A1 and combusted by the first contact mixing combustion mechanism or the second contact mixing combustion mechanism. The combustion air A1 is contained in the furnace The combustion exhaust gas A2 after burning the fuel F1 and F2 within 10.

並且，在該實施形態中，設置對前述第1燃料供給管31調整燃料F1之供給、停止等之第1閥31a，且設置對前述第2燃料供給管32調整燃料F2之供給、停止等之第2閥32a，且設置對前述第3燃料供給管33調整燃料F3之供給、停止等之第3閥33a。 In addition, in this embodiment, a first valve 31a for adjusting the supply and stopping of fuel F1 to the first fuel supply pipe 31 is provided, and a valve for adjusting the supply and stopping of fuel F2 to the second fuel supply pipe 32 is provided. The second valve 32a is provided with a third valve 33a for adjusting the supply and stop of the fuel F3 to the third fuel supply pipe 33.

並且，設置檢測前述第3燃料供給管33之附近之爐10內之氧氣或一氧化碳之濃度的濃度感測器41，且將由該濃度感測器41所檢測出之氧氣或一氧化碳之濃度的檢出結果輸出至控制裝置40。並且，依據如上方式從濃度感測器41輸出之氧氣或一氧化碳之濃度的檢測結果，藉由前述控制裝置40來控制前述第2燃料供給管32之第2閥32a、或第3燃料供給管33之第3閥33a，以調整經由第2燃料供給管32供給至爐10內之燃料F2的量、或經由第3燃料供給管33供給至爐10內之燃料F3的量。 In addition, a concentration sensor 41 for detecting the concentration of oxygen or carbon monoxide in the furnace 10 near the third fuel supply pipe 33 is provided, and the concentration of oxygen or carbon monoxide detected by the concentration sensor 41 is detected The result is output to the control device 40. Furthermore, according to the detection result of the concentration of oxygen or carbon monoxide output from the concentration sensor 41 in the above manner, the second valve 32a of the second fuel supply pipe 32 or the third fuel supply pipe 33 is controlled by the control device 40 The third valve 33a adjusts the amount of fuel F2 supplied into the furnace 10 via the second fuel supply pipe 32 or the amount of fuel F3 supplied into the furnace 10 via the third fuel supply pipe 33.

接著，具體地說明在該實施形態之工業爐中，使燃燒用空氣A1從前述燃燒用空氣供給管20供給，並使燃料F(F1至F3)燃燒之情形。 Next, in the industrial furnace of this embodiment, the combustion air A1 is supplied from the combustion air supply pipe 20 and the fuel F (F1 to F3) is combusted.

首先，使燃燒用空氣A1從燃燒用空氣供給管20供給並使燃料F(F1至F3)燃燒時，而當爐10內之溫度並未到達燃料F自燃之溫度時，如第2圖(A)所示，在關閉前述第2閥32a及第3閥33a之狀態下，僅打開前述第1閥31a，且藉由前述第1接觸混合式燃燒機構，將燃料F1經由前述第1燃料供給管31供給至燃燒用空氣A1，並且使前述燃燒用空氣 A1與燃料F1混合，並藉由導引燃燒器(未圖示)等，使混合有燃燒用空氣A1與燃料F1者著火並使之燃燒，且在前述一對燃燒用空氣供給管20中，交互地進行該種操作，並使爐10內之溫度加熱至燃料F1會自燃之溫度，前述燃燒用空氣A1係經由收容有前述蓄熱材21a之蓄熱部21供給至燃燒用空氣供給管20。 First, when the combustion air A1 is supplied from the combustion air supply pipe 20 and the fuel F (F1 to F3) is burned, and when the temperature in the furnace 10 does not reach the self-ignition temperature of the fuel F, as shown in Figure 2 (A As shown in ), with the second valve 32a and the third valve 33a closed, only the first valve 31a is opened, and the fuel F1 is passed through the first fuel supply pipe by the first contact mixing combustion mechanism 31 is supplied to the combustion air A1, and the aforementioned combustion air A1 is mixed with fuel F1, and a combustor (not shown) or the like is guided to ignite and burn the mixture of combustion air A1 and fuel F1. In the aforementioned pair of combustion air supply pipes 20, This operation is performed alternately, and the temperature in the furnace 10 is heated to a temperature at which the fuel F1 ignites spontaneously. The combustion air A1 is supplied to the combustion air supply pipe 20 via the heat storage part 21 containing the heat storage material 21a.

並且，如此在使爐10內之溫度加熱至燃料F1會自燃之溫度之後，如第2圖(B)所示，關閉前述第1閥31a並且在關閉前述第3閥33a之狀態下，僅打開第2閥32a，並藉由前述第2接觸混合式燃燒機構，而如前所述從第2燃料供給管32朝向從燃燒用空氣供給管20供給至爐10內之燃燒用空氣A1供給燃料F，並且以使該燃料F2在爐10內與燃燒用空氣A1接觸之方式使之混合並使之燃燒，在前述一對燃燒用空氣供給管20中交互地反覆進行該動作，以使爐10內加熱至預定溫度。 And, after heating the temperature in the furnace 10 to a temperature at which the fuel F1 would spontaneously ignite, as shown in Figure 2(B), the first valve 31a is closed and the third valve 33a is closed and only opened The second valve 32a supplies the fuel F from the second fuel supply pipe 32 to the combustion air A1 supplied from the combustion air supply pipe 20 into the furnace 10 through the aforementioned second contact mixing combustion mechanism as described above , And the fuel F2 is mixed and combusted so that the fuel F2 is brought into contact with the combustion air A1 in the furnace 10. This action is alternately repeated in the pair of combustion air supply pipes 20 to make the furnace 10 Heat to a predetermined temperature.

在此，如上方式使爐10內加熱至預定溫度時，因燃燒溫度之上升等而會使爐10內之NOx的產生量增加，當藉由NOx感測器(未圖示)檢測出包含在燃燒排氣A2之NOx之量成為預定量時，為了抑制爐10內之NOx的產生，因此藉由設置在前述第3燃料供給管33之附近的濃度感測器41來檢測出包含在第3燃料供給管33之附近之爐10內存在之燃燒排氣A2中的氧氣或一氧化碳之濃度，並將其結果輸出至前述控制裝置40。 Here, when the furnace 10 is heated to a predetermined temperature in the above manner, the amount of NOx generated in the furnace 10 will increase due to the increase in the combustion temperature. When the NOx sensor (not shown) detects that the When the amount of NOx in the combustion exhaust gas A2 becomes a predetermined amount, in order to suppress the generation of NOx in the furnace 10, the concentration sensor 41 installed near the third fuel supply pipe 33 is used to detect The concentration of oxygen or carbon monoxide in the combustion exhaust gas A2 present in the furnace 10 in the vicinity of the fuel supply pipe 33, and the result is output to the aforementioned control device 40.

並且，如第2圖(C)所示，依據包含在由前述濃度感測器41所檢測出之第3燃料供給管33的附近之爐10內存在之燃燒排氣A2中的氧氣或一氧化碳之濃度的結果，藉由前述控制裝置40，將處於前述之關閉 狀態之第3閥33a打開適當量，並且經由第3燃料供給管33將適當量之燃料F3供給至爐10內，並且控制前述第2閥32a之打開狀態，調整從第2燃料供給管32供給至爐10內之燃料F2的量，並且使經由第3燃料供給管33供給之燃料F3的量與從第2燃料供給管32供給至爐10內之燃料F2之量的合計量(F3+F2)，成為與經由第3燃料供給管33供給燃料F3之前從第2燃料供給管32供給至爐10內之燃料F2之量相同的量，而使爐10內之整體的燃燒容量成為相同量。 And, as shown in Fig. 2(C), based on the oxygen or carbon monoxide contained in the combustion exhaust gas A2 in the furnace 10 near the third fuel supply pipe 33 detected by the concentration sensor 41 The result of concentration, by the aforementioned control device 40, will be in the aforementioned closed The third valve 33a in the state is opened by an appropriate amount, and an appropriate amount of fuel F3 is supplied into the furnace 10 through the third fuel supply pipe 33, and the open state of the aforementioned second valve 32a is controlled to adjust the supply from the second fuel supply pipe 32 To the amount of fuel F2 in the furnace 10, and the total amount of the amount of fuel F3 supplied through the third fuel supply pipe 33 and the amount of fuel F2 supplied from the second fuel supply pipe 32 into the furnace 10 (F3+F2 ) Is the same amount as the amount of fuel F2 supplied from the second fuel supply pipe 32 into the furnace 10 before the fuel F3 is supplied through the third fuel supply pipe 33, and the entire combustion capacity in the furnace 10 becomes the same amount.

在此，包含在由前述濃度感測器41所檢測出之第3燃料供給管33之附近的爐10內存在之燃燒排氣A2中的氧氣濃度變少，或是一氧化碳之濃度變多時，藉由前述控制裝置40，使經由前述第3燃料供給管33所供給之燃料F3減少，而防止因燃料F3發生爆炸或燃料F3與燃燒排氣A2一同排出至外部，另一方面，隨著使燃料F3減少，而使從前述第2燃料供給管32供給之燃料F2的量增加。相反地，當包含在由前述濃度感測器41所檢測出之第3燃料供給管33之附近之爐10內的燃燒排氣A2中的氧氣濃度變多，或一氧化碳之濃度變少時，藉由前述之控制裝置40使經由前述第3燃料供給管33所供給之燃料F3增加，且使包含在燃燒後之氣體中的氧氣充分地燃燒，另一方面，隨著使燃料F3增加，而使從前述第2燃料供給管32供給之燃料F2的量減少。 Here, when the oxygen concentration in the combustion exhaust gas A2 contained in the furnace 10 near the third fuel supply pipe 33 detected by the aforementioned concentration sensor 41 decreases, or the concentration of carbon monoxide increases, With the control device 40, the fuel F3 supplied through the third fuel supply pipe 33 is reduced to prevent explosion of the fuel F3 or the fuel F3 from being discharged to the outside together with the combustion exhaust gas A2. The fuel F3 decreases, and the amount of the fuel F2 supplied from the second fuel supply pipe 32 is increased. Conversely, when the concentration of oxygen contained in the combustion exhaust gas A2 in the furnace 10 near the third fuel supply pipe 33 detected by the aforementioned concentration sensor 41 increases, or the concentration of carbon monoxide decreases, the The aforementioned control device 40 increases the fuel F3 supplied through the aforementioned third fuel supply pipe 33 and sufficiently combusts the oxygen contained in the combusted gas. On the other hand, as the fuel F3 increases, The amount of fuel F2 supplied from the aforementioned second fuel supply pipe 32 decreases.

如此，可抑制藉由前述第2接觸混合式燃燒機構所供給之燃料F2大多被燃燒而使NOx之產生量增加的情形，並且可藉由經由非接觸式燃燒機構之第3燃料供給管33所供給之燃料F3，使包含在燃燒排氣A2 中的燃燒用空氣A1燃燒，而能夠達到有效地利用從燃燒用空氣供給管20所供給之燃燒用空氣A1使燃料F效率佳地燃燒。 In this way, it can be suppressed that the fuel F2 supplied by the second contact mixing combustion mechanism is mostly burned, and the amount of NOx generated is increased, and the third fuel supply pipe 33 through the non-contact combustion mechanism can be suppressed. The supplied fuel F3 is included in the combustion exhaust gas A2 The combustion air A1 in the fuel is burned, and the combustion air A1 supplied from the combustion air supply pipe 20 can be effectively used to efficiently combust the fuel F.

此外，在本實施形態之工業爐中，就接觸混合式燃燒機構而言，係設置有二個如下所述之接觸混合式燃燒機構：第1接觸混合式燃燒機構，係將燃料F1從第1燃料供給管31供給至經由燃燒用空氣供給管20供給之燃燒用空氣A1，使燃料F1與燃燒用空氣A1混合並使之燃燒；及第2接觸混合式燃燒機構，係將燃料F2從第2燃料供給管32供給至從燃燒用空氣供給管20供給至爐10內之燃燒用空氣A1，且以使該燃料F2在爐10內與燃燒用空氣A1接觸的方式混合並使燃料F2燃燒；惟例如亦可朝向從前述燃燒用空氣供給管20供給至爐10內之燃燒用空氣A1，在使燃料F2從第2燃料供給管32供給之附近設置導引燃燒器(未圖示)，且在使從該第2燃料供給管32所供給之燃料F2與燃燒用空氣A1混合之狀態下著火並使之燃燒，且不設置前述第1接觸混合式燃燒機構。 In addition, in the industrial furnace of this embodiment, as far as the contact mixing combustion mechanism is concerned, two contact mixing combustion mechanisms are provided as follows: The first contact mixing combustion mechanism is used to transfer the fuel F1 from the first The fuel supply pipe 31 is supplied to the combustion air A1 supplied through the combustion air supply pipe 20 to mix and burn the fuel F1 and the combustion air A1; and the second contact mixing combustion mechanism is to transfer the fuel F2 from the second The fuel supply pipe 32 is supplied to the combustion air A1 supplied from the combustion air supply pipe 20 to the furnace 10, and the fuel F2 is mixed in the furnace 10 to contact the combustion air A1 and burns the fuel F2; For example, it is also possible to install a pilot burner (not shown) in the vicinity where the fuel F2 is supplied from the second fuel supply pipe 32 toward the combustion air A1 supplied from the combustion air supply pipe 20 into the furnace 10, and The fuel F2 supplied from the second fuel supply pipe 32 and the combustion air A1 are ignited and burned in a state where they are mixed, and the aforementioned first contact mixing combustion mechanism is not provided.

並且，在該實施形態之工業爐中，係只要在爐10中相對向之一對爐壁11分別設置有僅一個之成對的燃燒用空氣供給管20，且設置一對蓄熱式燃燒機構，惟亦可對於各爐壁11設置複數對之蓄熱式燃燒機構(未圖示)。 In addition, in the industrial furnace of this embodiment, only one pair of combustion air supply pipes 20 are provided in the furnace 10 facing a pair of furnace walls 11, and a pair of regenerative combustion mechanisms are provided. However, a plurality of pairs of regenerative combustion mechanisms (not shown) may be provided for each furnace wall 11.

再者，在該實施形態之工業爐中，係在成對之燃燒用空氣供給管20分別設置收容有蓄熱材21a之蓄熱部21，且藉由收容在前述蓄熱部21而蓄熱之蓄熱材21a使經由一方之燃燒用空氣供給管20供給至爐10內之燃燒用空氣A1加熱，另一方面，將在爐10內使燃料F(F1至F3)燃燒後之燃燒排氣A2經由另一方之燃燒用空氣供給管20導引至前述蓄熱部 21，並且設置使該燃燒排氣A2之熱蓄熱於收容在該蓄熱部21之蓄熱材21a的蓄熱式燃燒機構，惟亦可採用未設置蓄熱部21之一般的燃燒機構。 Furthermore, in the industrial furnace of this embodiment, the pair of combustion air supply pipes 20 are provided with heat storage parts 21 containing heat storage materials 21a, and the heat storage materials 21a stored heat by being stored in the heat storage parts 21 The combustion air A1 supplied to the furnace 10 through the combustion air supply pipe 20 on one side is heated, and on the other hand, the combustion exhaust gas A2 after burning the fuel F (F1 to F3) in the furnace 10 is passed through the other side The combustion air supply pipe 20 leads to the aforementioned heat storage part 21, and a regenerative combustion mechanism for storing the heat of the combustion exhaust gas A2 in the heat storage material 21a contained in the heat storage part 21 is provided, but a general combustion mechanism without the heat storage part 21 may also be used.

10‧‧‧爐 10‧‧‧Stove

11‧‧‧爐壁 11‧‧‧furnace wall

20‧‧‧燃燒用空氣供給管 20‧‧‧Air supply pipe for combustion

21‧‧‧蓄熱部 21‧‧‧Heat storage

21a‧‧‧蓄熱材 21a‧‧‧Heat storage material

31‧‧‧第1燃料供給管 31‧‧‧The first fuel supply pipe

31a‧‧‧第1閥 31a‧‧‧The first valve

32‧‧‧第2燃料供給管 32‧‧‧Second fuel supply pipe

32a‧‧‧第2閥 32a‧‧‧Second valve

33‧‧‧第3燃料供給管 33‧‧‧The third fuel supply pipe

33a‧‧‧第3閥 33a‧‧‧3rd valve

40‧‧‧控制裝置 40‧‧‧Control device

41‧‧‧濃度感測器 41‧‧‧Concentration Sensor

A1‧‧‧燃燒用空氣 A1‧‧‧Air for combustion

F(F1至F3)‧‧‧燃料 F (F1 to F3)‧‧‧Fuel

Claims (8)

一種工業爐，係在使燃燒用空氣與燃料混合並使燃料燃燒之工業爐中，設置有：接觸混合式燃燒機構，係使燃料與從燃燒用空氣供給管供給至爐內之燃燒用空氣接觸並混合而使燃料燃燒；以及非接觸式燃燒機構，係以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒；並且設置控制機構作為控制該工業爐之控制機構，該控制機構係進行下列控制：藉由前述接觸混合式燃燒機構，使從燃燒用空氣供給管所供給之燃燒用空氣與燃料混合並使燃料燃燒，且在使爐內溫度上升至燃料之自燃溫度之後，當爐內之NOx的產生量增加時，使在接觸混合式燃燒機構中供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 An industrial furnace, in an industrial furnace that mixes combustion air with fuel and burns the fuel, is provided with a contact mixing combustion mechanism, which makes the fuel contact the combustion air supplied from the combustion air supply pipe into the furnace And mixed to burn the fuel; and the non-contact combustion mechanism is directed to the direction away from the combustion air supplied from the combustion air supply pipe to the furnace without direct contact with the aforementioned combustion air. The fuel is supplied into the furnace, and the fuel is mixed with the combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism and burned; and a control mechanism is installed to control the industry The control mechanism of the furnace, which performs the following control: by the aforementioned contact mixing combustion mechanism, the combustion air supplied from the combustion air supply pipe is mixed with the fuel to burn the fuel, and the temperature in the furnace is increased After reaching the auto-ignition temperature of the fuel, when the amount of NOx produced in the furnace increases, the amount of fuel supplied in the contact hybrid combustion mechanism is reduced. On the other hand, the non-contact combustion mechanism described above can achieve The combustion air supply pipe supplies the combustion air in the furnace to the direction away from the combustion air without direct contact with the aforementioned combustion air. The fuel is supplied into the furnace and the fuel is mixed with the fuel contained in the "by the aforementioned contact mixing type The combustion mechanism mixes and burns the combustion air in the combustion exhaust gas after the fuel is burned. 如申請專利範圍第1項所述之工業爐，其中，就前述接觸混合式燃燒機構而言，係存在有：第1接觸混合式燃燒機構，係朝經由燃燒用空氣供給管供給之燃燒用空氣，將燃料從第1燃料供給管供給至燃燒用空氣供給管內，並且使燃料在燃燒用空氣供給管內與燃燒用空氣混合並使之燃燒；以及第2接觸混合式燃燒機構，係將燃料從第2燃料供給管供給至從燃燒用空氣供給管供給至爐內的燃燒用空氣，並以使燃料在爐內與燃 燒用空氣接觸之方式混合並使燃料燃燒；並且至少設置前述第2接觸混合式燃燒機構。 As for the industrial furnace described in item 1 of the scope of patent application, in the aforementioned contact mixing combustion mechanism, there is: a first contact mixing combustion mechanism that faces combustion air supplied through a combustion air supply pipe , The fuel is supplied from the first fuel supply pipe to the combustion air supply pipe, and the fuel is mixed and combusted with the combustion air in the combustion air supply pipe; and the second contact mixing combustion mechanism is the fuel From the second fuel supply pipe to the combustion air supplied from the combustion air supply pipe into the furnace, the fuel is combusted in the furnace The combustion uses air contact to mix and burn the fuel; and at least the second contact mixing combustion mechanism is provided. 如申請專利範圍第1項或第2項所述之工業爐，其中，前述之非接觸式燃燒機構係具有：朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向將燃料供給至爐內之第3燃料供給管；並且使該燃料與包含於「藉由前述接觸混合式燃燒機構而使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 Such as the industrial furnace described in item 1 or item 2 of the scope of patent application, wherein the aforementioned non-contact combustion mechanism has: the fuel is directed away from the combustion air supplied from the combustion air supply pipe to the furnace The fuel is supplied to the third fuel supply pipe in the furnace; and the fuel is mixed and burned with the "combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism". 如申請專利範圍第3項所述之工業爐，其中，於與前述接觸混合式燃燒機構相隔之第3燃料供給管之附近的爐內，設置檢測包含在燃燒排氣中的氧氣與一氧化碳之至少一者之濃度的濃度感測器。 The industrial furnace described in item 3 of the scope of patent application, wherein a furnace near the third fuel supply pipe separated from the aforementioned contact mixing combustion mechanism is provided to detect at least one of the oxygen and carbon monoxide contained in the combustion exhaust gas One of the concentration sensors. 如申請專利範圍第1項或第2項所述之工業爐，其中，以成對之方式設置前述燃燒用空氣供給管，並且在成對之各燃燒用空氣供給管分別設置蓄熱部，該蓄熱部收容有蓄熱材，藉由收容在前述蓄熱部之蓄熱材使經由一方之燃燒用空氣供給管供給之燃燒用空氣加熱，另一方面，經由另一方燃燒用空氣供給管將爐內之燃燒排氣導出至收容有前述蓄熱材之蓄熱部，且使燃燒排氣之熱蓄熱於蓄熱部之蓄熱材並使之排氣。 For example, the industrial furnace described in item 1 or item 2 of the scope of patent application, wherein the aforementioned combustion air supply pipes are provided in pairs, and each of the pair of combustion air supply pipes is provided with a heat storage unit, and the heat storage The heat storage material is contained in the heat storage part, and the combustion air supplied through one combustion air supply pipe is heated by the heat storage material contained in the heat storage part. On the other hand, the combustion air in the furnace is discharged through the other combustion air supply pipe. The gas is led out to the heat storage part containing the aforementioned heat storage material, and the heat of the combustion exhaust gas is stored in the heat storage material of the heat storage part and exhausted. 一種工業爐的燃燒控制方法，係於如申請專利範圍第1項或第2項所述之工業爐中，藉由前述接觸混合式燃燒機構，使從燃燒用空氣供給管供給之燃燒用空氣與燃料混合並使燃料燃燒，並且在使爐內溫度上升至燃料之自燃溫度之後，當爐內之NOx的產生量增加時，使在接觸混合式燃燒機構中供給之燃料的量減少，另一方面，藉由前述非接觸式燃燒機構，以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向不 會與前述燃燒用空氣直接接觸之方式將燃料供給至爐內，且使該燃料與包含於「藉由前述接觸混合式燃燒機構使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 A combustion control method for an industrial furnace, in the industrial furnace as described in item 1 or item 2 of the scope of patent application, uses the aforementioned contact mixing combustion mechanism to make the combustion air supplied from the combustion air supply pipe and The fuel mixes and burns the fuel, and after raising the furnace temperature to the autoignition temperature of the fuel, when the amount of NOx produced in the furnace increases, the amount of fuel supplied in the contact mixing combustion mechanism is reduced. On the other hand, , By the aforementioned non-contact combustion mechanism, the direction is different from the combustion air supplied from the combustion air supply pipe to the furnace The fuel is supplied into the furnace in direct contact with the aforementioned combustion air, and the fuel is mixed with the combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism. The burning. 如申請專利範圍第6項所述之工業爐的燃燒控制方法，其中，就前述接觸混合式燃燒機構而言，係設置前述申請專利範圍第2項所述之第1接觸混合式燃燒機構與第2接觸混合式燃燒機構，並且藉由前述第1接觸混合式燃燒機構而使從燃燒用空氣供給管所供給之燃燒用空氣與從第1燃料供給管所供給之燃料混合，並使燃料燃燒，以使爐內溫度上升至燃料之自燃溫度，在使第1接觸混合式燃燒機構停止之後，藉由前述第2接觸混合式燃燒機構，將燃料從第2燃料供給管供給至從燃燒用空氣供給管供給至爐內的燃燒用空氣，且以使燃料在爐內與燃燒用空氣接觸之方式使之混合並使燃料燃燒，然後當NOx之產生量因第2接觸混合式燃燒機構所產生之燃燒而增加時，使從第2燃料供給管供給之燃料之量減少，另一方面，藉由前述非接觸式燃燒機構，以朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向而不會與前述燃燒用空氣直接接觸之方式，將燃料供給至爐內，並且使該燃料與包含於「藉由前述接觸混合式燃燒機構使燃料燃燒後之燃燒排氣中的燃燒用空氣」混合並使之燃燒。 For example, the combustion control method of an industrial furnace described in item 6 of the scope of patent application, wherein the contact mixing combustion mechanism is provided with the first contact mixing combustion mechanism described in item 2 of the patent application and the second 2 Contact mixing combustion mechanism, and by the aforementioned first contact mixing combustion mechanism, the combustion air supplied from the combustion air supply pipe is mixed with the fuel supplied from the first fuel supply pipe to burn the fuel, After stopping the first contact mixing combustion mechanism to raise the furnace temperature to the autoignition temperature of the fuel, the second contact mixing combustion mechanism is used to supply fuel from the second fuel supply pipe to the combustion air supply The tube supplies the combustion air in the furnace, and mixes the fuel in the furnace to contact the combustion air, and burns the fuel. Then, the amount of NOx generated is burned by the second contact mixing combustion mechanism When it increases, the amount of fuel supplied from the second fuel supply pipe is reduced. On the other hand, by the non-contact combustion mechanism described above, the direction is separated from the combustion air supplied from the combustion air supply pipe to the furnace The fuel is supplied to the furnace without direct contact with the aforementioned combustion air, and the fuel is combined with the combustion air contained in the combustion exhaust gas after the fuel is burned by the aforementioned contact mixing combustion mechanism. "Mix and burn. 如申請專利範圍第7項所述之工業爐的燃燒控制方法，其中，在前述非接觸式燃燒機構設置：第3燃料供給管，係朝向與從燃燒用空氣供給管供給至爐內之燃燒用空氣相隔之方向將燃料供給至爐內；並且設置濃度感測器，該濃度感測器係使從該第3燃料供給管所供給之燃料與包含於「藉由前述接觸混合式燃燒機構使燃料燃燒後之燃燒排氣中的燃燒用空 氣」混合並使之燃燒時，檢測於前述第3燃料供給管之附近的爐內，包含在使藉由前述接觸混合式燃燒機構使燃料燃燒後的燃燒排氣中的氧氣與一氧化碳之至少一種之濃度；該控制方法依據由前述濃度感測器所檢測之氧氣與一氧化碳之至少一種之濃度，來控制從前述第2燃料供給管供給之燃料的量、及從前述第3燃料供給管供給之燃料的量。 The combustion control method of an industrial furnace as described in claim 7, wherein the non-contact combustion mechanism is provided with a third fuel supply pipe, which is directed and supplied from the combustion air supply pipe to the furnace for combustion The fuel is supplied into the furnace in a direction away from the air; and a concentration sensor is installed. The concentration sensor makes the fuel supplied from the third fuel supply pipe and the fuel The combustion air in the combustion exhaust after combustion At least one of oxygen and carbon monoxide contained in the combustion exhaust gas after the fuel is burned by the contact mixing combustion mechanism in the furnace near the third fuel supply pipe when it is mixed and combusted The control method controls the amount of fuel supplied from the second fuel supply pipe and the amount of fuel supplied from the third fuel supply pipe based on the concentration of at least one of oxygen and carbon monoxide detected by the aforementioned concentration sensor The amount of fuel.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06159613A (en) * 1992-11-24 1994-06-07 Nippon Furnace Kogyo Kaisha Ltd Low nox combustion method and burner used for the same
US20050211142A1 (en) * 2004-03-24 2005-09-29 Babcock-Hitachi K.K. Burner, fuel combustion method and boiler retrofit method
JP2007263476A (en) * 2006-03-29 2007-10-11 Ihi Corp Atmosphere control method for heating furnace
WO2017112671A1 (en) * 2015-12-23 2017-06-29 Praxair Technology, Inc. Glass furnace with improved production rate
JP6159613B2 (en) 2013-08-05 2017-07-05 公益財団法人電磁材料研究所 Strain sensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3557028B2 (en) * 1996-02-14 2004-08-25 Ｊｆｅスチール株式会社 Combustion burner and combustion method in furnace
JP3031908U (en) 1996-05-31 1996-12-13 古久根建設株式会社 An apartment house that can form an underfloor storage space in the upper door of the floor
JP3958767B2 (en) * 2005-03-18 2007-08-15 川崎重工業株式会社 Gas turbine combustor and ignition method thereof
JP5171065B2 (en) 2007-03-01 2013-03-27 中外炉工業株式会社 Continuous heating furnace
US7632090B2 (en) * 2007-10-30 2009-12-15 Air Products And Chemicals, Inc. Burner system and method of operating a burner for reduced NOx emissions
CN102607022A (en) * 2012-03-20 2012-07-25 朱海生 Energy-saving and environment-friendly regenerative high-temperature air combustor
JP2019015439A (en) * 2017-07-06 2019-01-31 中外炉工業株式会社 Heat-storing-type combustion facility

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06159613A (en) * 1992-11-24 1994-06-07 Nippon Furnace Kogyo Kaisha Ltd Low nox combustion method and burner used for the same
US20050211142A1 (en) * 2004-03-24 2005-09-29 Babcock-Hitachi K.K. Burner, fuel combustion method and boiler retrofit method
JP2007263476A (en) * 2006-03-29 2007-10-11 Ihi Corp Atmosphere control method for heating furnace
JP6159613B2 (en) 2013-08-05 2017-07-05 公益財団法人電磁材料研究所 Strain sensor
WO2017112671A1 (en) * 2015-12-23 2017-06-29 Praxair Technology, Inc. Glass furnace with improved production rate

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