TW202115347A - Liquid fuel combustion device - Google Patents

Liquid fuel combustion device Download PDF

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Publication number
TW202115347A
TW202115347A TW109124277A TW109124277A TW202115347A TW 202115347 A TW202115347 A TW 202115347A TW 109124277 A TW109124277 A TW 109124277A TW 109124277 A TW109124277 A TW 109124277A TW 202115347 A TW202115347 A TW 202115347A
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liquid fuel
oxygen
combustion gas
supply nozzle
combustion
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TW109124277A
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Chinese (zh)
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TWI811556B (en
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友澤健一
伊藤貴之
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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
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/106—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting at the burner outlet
    • 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
    • F23C5/02—Structural details of mounting
    • 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
    • F23C7/008—Flow control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/002—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle arranged within furnace openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/108—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel intersecting downstream of the burner outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/38—Nozzles; Cleaning devices therefor
    • 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
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007—Supplying oxygen or oxygen-enriched air
    • 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
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
    • F23C2700/02—Combustion apparatus using liquid fuel
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

In the present invention, while atomizing liquid fuel sprayed out from a liquid fuel supplying nozzle 11 into mist-shape by first combustion gas sprayed out from an atomizing gas supplying nozzle 12 disposed at outer peripheral, and further spray out second combustion gas from a primary combustion gas supplying nozzle 13 disposed at outer peripheral for conducting primary combustion for liquid fuel, introduces oxygen into at least one of the first combustion gas and second combustion gas, and sprays out oxygen into the liquid fuel has been conducted primary combustion from an oxygen supplying nozzle 14 disposed at a position of outer peripheral side away from first combustion gas supplying nozzle.

Description

液體燃料燃燒裝置 Liquid fuel burning device

本發明係關於一種使從液體燃料供給噴嘴之前端噴出之液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒的液體燃料燃燒裝置。特別是，具有下述特徵點：在使從液體燃料供給噴嘴之前端噴出之液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒的液體燃料燃燒裝置中，在使液體燃料燃燒時，對於與液體燃料混合之燃燒用氣體供給氧，以提升熱效率而謀求省能源化，並使在供給氧而使液體燃料燃燒時所產生之燃燒時的噪音降低。 The present invention relates to a liquid fuel burning device that mixes and burns liquid fuel sprayed from the front end of a liquid fuel supply nozzle and combustion gas sprayed from its surroundings. In particular, it has the following feature: in a liquid fuel combustion device that mixes and burns the liquid fuel sprayed from the front end of the liquid fuel supply nozzle and the combustion gas sprayed from its surroundings, when the liquid fuel is burned, Oxygen is supplied to the combustion gas mixed with the liquid fuel to improve the thermal efficiency to achieve energy saving, and to reduce the combustion noise generated when the liquid fuel is combusted by supplying oxygen.

以往，就液體燃料燃燒裝置而言，如專利文獻1、2等所示，係採用使油等液體燃料與燃燒用氣體一起從燃料噴霧噴嘴之前端噴霧並使之燃燒者。 Conventionally, as shown in Patent Documents 1, 2 and the like, liquid fuel combustion apparatuses spray liquid fuels such as oil from the front end of a fuel spray nozzle and burn them together with combustion gas.

在此，在該種液體燃料燃燒裝置中，當使油等液體燃料與燃燒用空氣混合並使之燃燒時，與使之與燃燒用氧混合並使之燃燒之情形相比較，會有熱效率低之問題。 Here, in this type of liquid fuel combustion device, when the liquid fuel such as oil is mixed with combustion air and burned, compared with the case where it is mixed with combustion oxygen and burned, the thermal efficiency is low. The problem.

再者，在習知技術中，如專利文獻1所示，係揭示有如以下所示者：在使液體燃料之油噴出之油噴嘴的外周設置第2空氣噴嘴及第1 空氣噴嘴，而於從該等空氣噴嘴之外周側供給高溫之預熱燃燒用空氣並使油燃燒時，使第1空氣噴嘴前進後退，而可在油噴嘴與第2空氣噴嘴之間形成供冷卻空氣流通之冷卻空氣通路，並且，對第2空氣噴嘴內供給少量之低溫空氣，以防止油噴嘴之高溫化，而且，使第2空氣噴嘴之前端部比第1空氣噴嘴之前端部位於更前方，以防止油附著在第1空氣噴嘴之前端部內面，並且利用高溫之預熱燃燒用空氣而可燃燒重質油。 Furthermore, in the prior art, as shown in Patent Document 1, it is disclosed that a second air nozzle and a first air nozzle are provided on the outer periphery of an oil nozzle that sprays liquid fuel oil. Air nozzles, when supplying high-temperature preheated combustion air from the outer periphery of these air nozzles and burning oil, the first air nozzle is moved forward and backward, and cooling can be formed between the oil nozzle and the second air nozzle. Cooling air passage for air circulation, and a small amount of low-temperature air is supplied to the second air nozzle to prevent the oil nozzle from heating up, and the front end of the second air nozzle is positioned more forward than the front end of the first air nozzle , To prevent oil from adhering to the inner surface of the front end of the first air nozzle, and to use high-temperature preheated combustion air to burn heavy oil.

然而，在該專利文獻1所示者中，雖如前所述利用高溫之預熱燃燒用空氣而可燃燒重質油，但如以氧使之燃燒時，無法提升液體燃料之熱效率。 However, in the patent document 1, although heavy oil can be burned by using high-temperature preheated combustion air as described above, if it is burned with oxygen, the thermal efficiency of liquid fuel cannot be improved.

再者，在如專利文獻2所示者中，提案有一種如下所述者：為了提升液體燃料之熱效率，而將供給氧之氧供給口設置在對液體燃料施加壓力並使之噴霧的液體燃料供給噴嘴的前端附近之外周，並且使從液體燃料供給噴嘴之前端噴霧的液體燃料與從前述氧供給口供給之氧混合，以使液體燃料燃燒。 In addition, as shown in Patent Document 2, there is a proposal as follows: In order to improve the thermal efficiency of the liquid fuel, an oxygen supply port for supplying oxygen is provided in the liquid fuel that applies pressure to the liquid fuel and sprays it. The nozzle is supplied to the outer periphery near the front end, and the liquid fuel sprayed from the front end of the liquid fuel supply nozzle is mixed with the oxygen supplied from the oxygen supply port to burn the liquid fuel.

在此，如專利文獻2所示，於從液體燃料供給噴嘴對液體燃料施加壓力並使之噴霧，而使液體燃料與從設置在該液體燃料供給噴嘴的外周之氧供給口所供給之氧立即混合並使之燃燒時，雖可提升液體燃料之熱效率而謀求省能源化，但在如上方式使從液體燃料供給噴嘴所噴霧之液體燃料與氧立即混合並使之燃燒時，會有燃燒時之噪音變大之問題。 Here, as shown in Patent Document 2, when pressure is applied from the liquid fuel supply nozzle to the liquid fuel and sprayed, the liquid fuel and the oxygen supplied from the oxygen supply port provided on the outer periphery of the liquid fuel supply nozzle are immediately When mixing and burning it, although the thermal efficiency of the liquid fuel can be improved and energy saving is achieved, when the liquid fuel sprayed from the liquid fuel supply nozzle is immediately mixed with oxygen and burned in the above manner, there will be a burning time. The problem of increased noise.

[先前技術文獻] [Prior Technical Literature]

[專利文獻] [Patent Literature]

專利文獻1：日本特公昭63-3206號公報 Patent Document 1: Japanese Patent Publication No. 63-3206

專利文獻2：日本特開昭54-24323號公報 Patent Document 2: Japanese Patent Application Laid-Open No. 54-24323

本發明之課題係在於解決液體燃料燃燒裝置之前述問題，該液體燃料燃燒裝置係使從液體燃料供給噴嘴之前端噴出之油等液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒者。 The subject of the present invention is to solve the aforementioned problems of a liquid fuel combustion device that mixes and combusts liquid fuel such as oil sprayed from the front end of a liquid fuel supply nozzle with combustion gas sprayed from its surroundings .

特別是，其課題在於：在使從液體燃料供給噴嘴之前端噴出之液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒時，對於與液體燃料混合並使之燃燒的燃燒用氣體供給氧而提升熱效率，以謀求省能源化，並且使在將氧供給至燃燒用氣體而使液體燃料燃燒時所產生之燃燒時的噪音降低。 In particular, the problem is to supply the combustion gas that is mixed with the liquid fuel and burned when the liquid fuel sprayed from the front end of the liquid fuel supply nozzle is mixed with the combustion gas sprayed from its surroundings and burned. Oxygen improves thermal efficiency to save energy and reduces noise during combustion that is generated when liquid fuel is combusted by supplying oxygen to combustion gas.

在本發明之液體燃料燃燒裝置中，為了要解決前述之課題，係在使從液體燃料供給噴嘴之前端噴出之液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒的液體燃料燃燒裝置中，在前述液體燃料供給噴嘴之外周側，設置用以供給使從該液體燃料供給噴嘴之前端噴出之液體燃料以霧狀噴霧之第1燃燒用氣體的噴霧用氣體供給噴嘴，並且，在該噴霧用氣體供給噴嘴之外周側設置一次燃燒用氣體供給噴嘴，且使第2燃燒用氣體從該一次燃燒用氣體供給噴嘴噴出至前述之以霧狀噴霧之液體燃料，而使前述液體燃料進行一次燃燒，此時，使氧導入於前述之供給至噴霧用氣 體供給噴嘴之第1燃燒用氣體及供給至一次燃燒用氣體供給噴嘴之第2燃燒用氣體的至少一者，並且，在與前述一次燃燒用氣體供給噴嘴相隔離之外周側的位置設置氧供給噴嘴，且使氧從該氧供給噴嘴噴出至前述之進行一次燃燒之液體燃料，而使液體燃料進行二次燃燒。 In the liquid fuel combustion device of the present invention, in order to solve the aforementioned problems, it is a liquid fuel combustion device that mixes and combusts the liquid fuel sprayed from the front end of the liquid fuel supply nozzle and the combustion gas sprayed from its surroundings In the above-mentioned liquid fuel supply nozzle, a spray gas supply nozzle for supplying a first combustion gas for spraying the liquid fuel sprayed from the front end of the liquid fuel supply nozzle in a mist form is provided on the outer peripheral side of the liquid fuel supply nozzle, and The gas supply nozzle for spraying is provided with a gas supply nozzle for primary combustion on the outer peripheral side, and the second combustion gas is ejected from the gas supply nozzle for primary combustion to the above-mentioned liquid fuel sprayed in the form of mist, so that the above-mentioned liquid fuel is performed once Combustion, at this time, introduce oxygen into the aforementioned gas for spraying At least one of the first combustion gas supplied to the primary combustion gas supply nozzle and the second combustion gas supplied to the primary combustion gas supply nozzle, and an oxygen supply is provided at a position on the outer peripheral side isolated from the aforementioned primary combustion gas supply nozzle Nozzle, and eject oxygen from the oxygen supply nozzle to the aforementioned liquid fuel for primary combustion, so that the liquid fuel is subjected to secondary combustion.

並且，在本發明之液體燃料燃燒裝置中，係如前所述使液體燃料從液體燃料供給噴嘴之前端噴出，且藉由從設置在該液體燃料供給噴嘴之外周側的噴霧用氣體供給噴嘴噴出之第1燃燒用氣體，使如上方式從液體燃料供給噴嘴噴出之液體燃料以霧狀噴霧，並且使燃燒用氣體從設置在噴霧用氣體供給噴嘴之外周側的第2燃燒用氣體供給噴嘴噴出至該以霧狀噴霧之液體燃料，而使該液體燃料進行一次燃燒，此時，使氧導入於前述之供給至噴霧用氣體供給噴嘴之第1燃燒用氣體及供給至一次燃燒用氣體供給噴嘴之第2燃燒用氣體的至少一者而進行一次燃燒，且更進一步使氧從設置在與前述一次燃燒用氣體供給噴嘴相隔離之外周側之位置的氧供給噴嘴噴出，而使經一次燃燒之液體燃料進行二次燃燒。 In addition, in the liquid fuel combustion device of the present invention, the liquid fuel is sprayed from the front end of the liquid fuel supply nozzle as described above, and by spraying from the gas supply nozzle for spraying provided on the outer periphery of the liquid fuel supply nozzle For the first combustion gas, the liquid fuel sprayed from the liquid fuel supply nozzle in the above manner is sprayed in a mist form, and the combustion gas is sprayed from the second combustion gas supply nozzle arranged on the outer peripheral side of the spray gas supply nozzle to The liquid fuel sprayed in a mist form is burned once. At this time, oxygen is introduced into the first combustion gas supplied to the spray gas supply nozzle and supplied to the primary combustion gas supply nozzle. At least one of the second combustion gases is combusted once, and oxygen is further ejected from the oxygen supply nozzles located on the outer peripheral side separated from the aforementioned primary combustion gas supply nozzles, so that the primary combustion liquid The fuel undergoes secondary combustion.

如此，藉由從噴霧用氣體供給噴嘴噴出之第1燃燒用氣體，使從液體燃料供給噴嘴噴出之液體燃料以霧狀噴霧，並且使第2燃燒用氣體從一次燃燒用氣體供給噴嘴噴出至如上所述以霧狀噴霧之液體燃料，而使液體燃料進行一次燃燒，此時，當使氧導入於供給至噴霧用氣體供給噴嘴之第1燃燒用氣體及供給至一次燃燒用氣體供給噴嘴之第2燃燒用氣體的至少一者而使液體燃料進行一次燃燒，且更進一步使氧從設置在與一次燃燒用氣體供給噴嘴相隔離之外周側之位置的氧供給噴嘴噴出，而使經一次燃燒之液體燃料進行二次燃燒時，就會藉由混合有氧之第1燃燒用氣體 及/或第2燃燒用氣體，而使液體燃料有效率地進行一次燃燒，並且，藉由從氧供給噴嘴噴出之氧，而使經一次燃燒之液體燃料在廣泛之範圍內有效率地進行二次燃燒，而可提升液體燃料之熱效率並且實現省能源化。再者，還將前述第1燃燒用氣體與第2燃燒用氣體之除了氧以外者設為空氣，且在液體燃料之噴霧及/或一次燃燒中，使氧與空氣混合，藉此，與僅以氧進行噴霧或一次燃燒之情形相比較，燃燒時之噪音亦會變小。 In this way, by the first combustion gas ejected from the spray gas supply nozzle, the liquid fuel ejected from the liquid fuel supply nozzle is sprayed in a mist form, and the second combustion gas is ejected from the primary combustion gas supply nozzle to the above The liquid fuel sprayed in the form of a mist is used for primary combustion of the liquid fuel. At this time, oxygen is introduced into the first combustion gas supplied to the spray gas supply nozzle and the first combustion gas supplied to the primary combustion gas supply nozzle. 2 At least one of the combustion gas causes the liquid fuel to be combusted once, and the oxygen is further ejected from the oxygen supply nozzle arranged on the outer peripheral side isolated from the gas supply nozzle for the primary combustion, so as to cause the primary combustion gas When the liquid fuel is subjected to secondary combustion, it will be mixed with the first combustion gas with oxygen And/or the second combustion gas, so that the liquid fuel is combusted efficiently at one time, and the oxygen ejected from the oxygen supply nozzle is used to efficiently combust the liquid fuel in a wide range. It can improve the thermal efficiency of liquid fuel and realize energy saving. Furthermore, the first combustion gas and the second combustion gas other than oxygen are set to air, and during the spraying and/or primary combustion of the liquid fuel, the oxygen is mixed with the air. Compared with the case of spraying with oxygen or one-time combustion, the noise during combustion will also be reduced.

再者，在本發明之液體燃料燃燒裝置中，可設置有用以調整供給至前述液體燃料供給噴嘴之液體燃料之量的燃料調整閥，並且，在前述之供給第1燃燒用氣體之噴霧用氣體供給噴嘴、及前述之供給第2燃燒用氣體之一次燃燒用氣體供給噴嘴的至少一者，可設置調整前述第1燃燒用氣體及/或第2燃燒用氣體之空氣與氧之比率的燃燒用氣體調整閥。 Furthermore, in the liquid fuel combustion device of the present invention, a fuel adjustment valve for adjusting the amount of liquid fuel supplied to the liquid fuel supply nozzle may be provided, and the spray gas for supplying the first combustion gas At least one of the supply nozzle and the aforementioned primary combustion gas supply nozzle for supplying the second combustion gas can be provided with a combustor that adjusts the ratio of air to oxygen in the first combustion gas and/or the second combustion gas Gas adjustment valve.

如此，即可對應於供給至液體燃料供給噴嘴之液體燃料的量或燃燒條件等，適當地控制使氧導入於從噴霧用氣體供給噴嘴或一次燃燒用氣體供給噴嘴噴出之燃燒用氣體的時間點或導入之氧的量，藉由導入的氧而使被噴霧之液體燃料在適當之狀態下進行一次燃燒，並且，還可控制從氧供給噴嘴噴出之氧的量，而適當地控制使經一次燃燒之液體燃料進行二次燃燒的狀態，可提升液體燃料之熱效率而更進一步地實現省能源化。再者，還將前述第1燃燒用氣體與第2燃燒用氣體之除了氧以外者設為空氣，且在液體燃料之噴霧及/或一次燃燒中，使氧與空氣混合，藉此，與僅以氧進行噴霧或一次燃燒之情形相比較，燃燒時之噪音亦可變小。 In this way, it is possible to appropriately control the timing of introducing oxygen into the combustion gas ejected from the spray gas supply nozzle or the primary combustion gas supply nozzle in accordance with the amount of liquid fuel supplied to the liquid fuel supply nozzle or the combustion conditions. Or the amount of oxygen introduced, the sprayed liquid fuel is burned in a proper state by the introduced oxygen, and the amount of oxygen ejected from the oxygen supply nozzle can also be controlled, and the amount of oxygen can be controlled appropriately. The state of secondary combustion of the burned liquid fuel can improve the thermal efficiency of the liquid fuel and further realize energy saving. Furthermore, the first combustion gas and the second combustion gas other than oxygen are set to air, and during the spraying and/or primary combustion of the liquid fuel, the oxygen is mixed with the air. Compared with the case of spraying with oxygen or one-time combustion, the noise during combustion can also be reduced.

本發明之液體燃料燃燒裝置中，係藉由從噴霧用氣體供給噴嘴噴出之第1燃燒用氣體，而使如上方式從液體燃料供給噴嘴噴出之液體燃料以霧狀噴霧，並且，使第2燃燒用氣體從一次燃燒用氣體供給噴嘴噴出至如上方式以霧狀噴霧之液體燃料，而使液體燃料進行一次燃燒，此時，使氧導入至供給至噴霧用氣體供給噴嘴之第1燃燒用氣體及供給至一次燃燒用氣體供給噴嘴之第2燃燒用氣體的至少一者而使液體燃料進行一次燃燒，且更進一步使氧從設置在與一次燃燒用氣體供給噴嘴相隔離之外周側之位置的氧供給噴嘴噴出，而使經一次燃燒之液體燃料進行二次燃燒，因此，會藉由混合有氧之第1燃燒用氣體及/或第2燃燒用氣體而有效率地使液體燃料進行一次燃燒，並且，還會藉由從氧供給噴嘴噴出之氧而使經一次燃燒之液體燃料在廣泛之範圍內有效率地進行二次燃燒，而可提升液體燃料之熱效率並且實現省能源化。再者，還將前述第1燃燒用氣體與第2燃燒用氣體之除了氧以外者設為空氣，且在液體燃料之噴霧及/或一次燃燒中，使氧與空氣混合，藉此，與僅以氧進行噴霧或一次燃燒之情形相比較，燃燒時之噪音亦可變小。 In the liquid fuel combustion device of the present invention, the first combustion gas sprayed from the spray gas supply nozzle is used to spray the liquid fuel sprayed from the liquid fuel supply nozzle as described above in a mist form, and the second combustion The gas is sprayed from the gas supply nozzle for primary combustion to the liquid fuel sprayed as a mist in the above manner, and the liquid fuel is combusted once. At this time, oxygen is introduced to the first combustion gas supplied to the gas supply nozzle for spraying and At least one of the second combustion gas supplied to the gas supply nozzle for primary combustion causes the liquid fuel to be combusted once, and the oxygen is further removed from the oxygen provided at a position on the outer peripheral side isolated from the gas supply nozzle for primary combustion The supply nozzle sprays to cause the primary combustion of the liquid fuel to perform secondary combustion. Therefore, the first combustion gas and/or the second combustion gas with oxygen are mixed to efficiently perform the primary combustion of the liquid fuel. In addition, the oxygen ejected from the oxygen supply nozzle allows the once-combusted liquid fuel to be efficiently combusted in a wide range, thereby improving the thermal efficiency of the liquid fuel and realizing energy saving. Furthermore, the first combustion gas and the second combustion gas other than oxygen are set to air, and during the spraying and/or primary combustion of the liquid fuel, the oxygen is mixed with the air. Compared with the case of spraying with oxygen or one-time combustion, the noise during combustion can also be reduced.

結果，本發明之液體燃料燃燒裝置中，在使從液體燃料供給噴嘴之前端噴出之液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒時，於藉由液體燃料、及混合有氧之第1燃燒用氣體及/或第2燃燒用氣體而經一次燃燒後，藉由從氧供給噴嘴噴出之氧而使經一次燃燒之液體燃料在廣泛之範圍內有效率地進行二次燃燒，而可提升液體燃料之熱效率，且謀求省能源化。再者，還將前述第1燃燒用氣體與第2燃燒用氣體之除了氧以外者設為空氣，且在液體燃料之噴霧及/或一次燃燒中，使氧與空氣混 合，藉此，與僅以氧進行噴霧或一次燃燒之情形相比較，可使燃燒時之噪音降低。 As a result, in the liquid fuel combustion device of the present invention, when the liquid fuel sprayed from the front end of the liquid fuel supply nozzle is mixed with the combustion gas sprayed from its surroundings and combusted, the liquid fuel is mixed with oxygen. After the first combustion gas and/or the second combustion gas undergoes primary combustion, the primary combustion of the liquid fuel is efficiently combusted in a wide range by the oxygen sprayed from the oxygen supply nozzle, And it can improve the thermal efficiency of liquid fuel and seek energy saving. Furthermore, the first combustion gas and the second combustion gas other than oxygen are set to air, and the oxygen is mixed with the air in the spray and/or primary combustion of the liquid fuel. Combined, by this, compared with the case of spraying with oxygen only or one-time combustion, the noise during combustion can be reduced.

1:爐 1: Furnace

1a:爐壁 1a: furnace wall

10:液體燃料燃燒裝置 10: Liquid fuel combustion device

11:液體燃料供給噴嘴 11: Liquid fuel supply nozzle

11a:燃料調整閥 11a: Fuel adjustment valve

11b:燃料供給管 11b: Fuel supply pipe

12:噴霧用氣體供給噴嘴 12: Gas supply nozzle for spray

12a1:氧調整閥 12a1: Oxygen adjustment valve

12a2:空氣調整閥 12a2: Air adjustment valve

12b:第1燃燒用氣體供給管 12b: The first combustion gas supply pipe

12b1:氧供給管 12b1: Oxygen supply pipe

12b2:空氣供給管 12b2: Air supply pipe

13:一次燃燒用氣體供給噴嘴 13: Gas supply nozzle for primary combustion

13a1:氧調整閥 13a1: Oxygen adjustment valve

13a2:空氣調整閥 13a2: Air adjustment valve

13b:第2燃燒用氣體供給管 13b: The second combustion gas supply pipe

13b1:氧供給管 13b1: Oxygen supply pipe

13b2:空氣供給管 13b2: Air supply pipe

14:氧供給噴嘴 14: Oxygen supply nozzle

14a:氧調整閥 14a: Oxygen adjustment valve

14b:氧供給管 14b: Oxygen supply pipe

圖1係在本發明之一實施形態中使用之液體燃料燃燒裝置的概略剖面說明圖。 Fig. 1 is a schematic cross-sectional explanatory view of a liquid fuel combustion apparatus used in an embodiment of the present invention.

圖2係概略剖面說明圖，係顯示下列狀態：在使用於前述實施形態之液體燃料燃燒裝置中，對於液體燃料供給噴嘴供給適量之液體燃料並使之噴出，且使以適當比例混合有空氣與氧之第1燃燒用氣體從噴霧用氣體供給噴嘴噴出而使前述液體燃料噴霧，並且，使以適當比例混合有空氣與氧之第2燃燒用氣體從一次燃燒用氣體供給噴嘴噴出而使前述液體燃料進行一次燃燒，且更進一步使適量之氧從設置在與一次燃燒用氣體供給噴嘴相隔離之外周側的氧供給噴嘴噴出，而使前述油進行二次燃燒。 2 is a schematic cross-sectional explanatory view showing the following state: In the liquid fuel combustion device used in the foregoing embodiment, an appropriate amount of liquid fuel is supplied to the liquid fuel supply nozzle and ejected, and air and air are mixed in an appropriate ratio The first combustion gas of oxygen is sprayed from the spraying gas supply nozzle to spray the liquid fuel, and the second combustion gas mixed with air and oxygen in an appropriate ratio is sprayed from the primary combustion gas supply nozzle to spray the liquid The fuel is combusted once, and an appropriate amount of oxygen is further ejected from the oxygen supply nozzle provided on the outer peripheral side isolated from the gas supply nozzle for primary combustion, so that the aforementioned oil is subjected to secondary combustion.

圖3係概略剖面說明圖，係顯示下列狀態：在使用於前述實施形態之液體燃料燃燒裝置中，僅使適量之空氣作為第1燃燒用氣體從前述噴霧用氣體供給噴嘴噴出而使前述液體燃料噴霧，另一方面僅使適量之氧作為第2燃燒用氣體從一次燃燒用氣體供給噴嘴噴出而使液體燃料進行一次燃燒，然後，使適量之氧從氧供給噴嘴噴出而使前述液體燃料進行二次燃燒。 3 is a schematic cross-sectional explanatory view showing the following state: In the liquid fuel combustion device used in the foregoing embodiment, only a suitable amount of air is ejected from the spray gas supply nozzle as the first combustion gas to make the liquid fuel Spray, on the other hand, only an appropriate amount of oxygen is ejected as the second combustion gas from the primary combustion gas supply nozzle to burn the liquid fuel once, and then an appropriate amount of oxygen is ejected from the oxygen supply nozzle to cause the liquid fuel to perform two steps. Times burned.

圖4係概略剖面說明圖，係顯示下列狀態：在使用於前述實施形態之液體燃料燃燒裝置中，僅使適量之氧作為第1燃燒用氣體從前述噴霧用氣體供給噴嘴噴出而使前述液體燃料噴霧，另一方面僅使適量之空氣作為第 2燃燒用氣體從一次燃燒用氣體供給噴嘴噴出而使液體燃料進行一次燃燒，然後，使適量之氧從氧供給噴嘴噴出而使前述液體燃料進行二次燃燒。 4 is a schematic cross-sectional explanatory view showing the following state: in the liquid fuel combustion device used in the foregoing embodiment, only a proper amount of oxygen is ejected as the first combustion gas from the spray gas supply nozzle to make the liquid fuel Spray, on the other hand, only make a proper amount of air as the first 2 The combustion gas is ejected from the primary combustion gas supply nozzle to cause the liquid fuel to be combusted once, and then an appropriate amount of oxygen is ejected from the oxygen supply nozzle to perform the secondary combustion of the liquid fuel.

以下，依據附圖具體地說明本發明實施形態之液體燃料燃燒裝置。此外，本發明之液體燃料燃燒裝置並不限定於下述之實施形態所示者，而係可在不變更發明之要旨的範圍內適當地變更而實施者。 Hereinafter, a liquid fuel combustion apparatus according to an embodiment of the present invention will be specifically explained based on the drawings. In addition, the liquid fuel combustion apparatus of the present invention is not limited to those shown in the following embodiments, but can be implemented with appropriate changes within a range that does not change the gist of the invention.

在此實施形態中，如圖1所示，在設置於爐1之爐壁1a之液體燃料燃燒裝置10的中心部，設置使油等液體燃料朝向爐1內噴出之液體燃料供給噴嘴11，並且在將液體燃料導引至該液體燃料供給噴嘴11之燃料供給管11b設置燃料調整閥11a，且藉由該燃料調整閥11a來調整供給至液體燃料供給噴嘴11之液體燃料的量。 In this embodiment, as shown in FIG. 1, at the center of the liquid fuel burning device 10 installed on the furnace wall 1a of the furnace 1, a liquid fuel supply nozzle 11 for spraying liquid fuel such as oil toward the furnace 1 is provided, and A fuel regulating valve 11a is provided in a fuel supply pipe 11b that guides the liquid fuel to the liquid fuel supply nozzle 11, and the amount of liquid fuel supplied to the liquid fuel supply nozzle 11 is adjusted by the fuel regulating valve 11a.

再者，還在該液體燃料供給噴嘴11之外周側設置噴霧用氣體供給噴嘴12，且使第1燃燒用氣體從該噴霧用氣體供給噴嘴12之前端噴出，而使從前述液體燃料供給噴嘴11之前端噴出的液體燃料以霧狀噴霧。 Furthermore, a spraying gas supply nozzle 12 is provided on the outer peripheral side of the liquid fuel supply nozzle 11, and the first combustion gas is ejected from the front end of the spraying gas supply nozzle 12, and the liquid fuel supply nozzle 11 The liquid fuel sprayed from the front end is sprayed in mist.

在此，在將第1燃燒用氣體供給至該噴霧用氣體供給噴嘴12時，係在對噴霧用氣體供給噴嘴12導引第1燃燒用氣體之第1燃燒用氣體供給管12b，連接供給氧之氧供給管12b1及供給空氣之空氣供給管12b2，並且，設置調整供給至前述氧供給管12b1之氧的量之氧調整閥12a1，以及設置調整供給至前述空氣供給管12b2之空氣之量的空氣調整閥12a2。 Here, when the first combustion gas is supplied to the spray gas supply nozzle 12, the first combustion gas supply pipe 12b that guides the first combustion gas to the spray gas supply nozzle 12 is connected to supply oxygen. The oxygen supply pipe 12b1 and the air supply pipe 12b2 for supplying air, and an oxygen adjustment valve 12a1 for adjusting the amount of oxygen supplied to the oxygen supply pipe 12b1, and an oxygen adjustment valve 12a1 for adjusting the amount of air supplied to the air supply pipe 12b2 Air adjustment valve 12a2.

再者，還在前述噴霧用氣體供給噴嘴12之外周側設置一次燃燒用氣體供給噴嘴13，使第2燃燒用氣體從該一次燃燒用氣體供給噴嘴13之前端噴出至如上方式以霧狀噴霧之液體燃料，而使前述液體燃料進行一次燃燒。 Furthermore, a primary combustion gas supply nozzle 13 is provided on the outer periphery of the aforementioned spraying gas supply nozzle 12, and the second combustion gas is sprayed from the front end of the primary combustion gas supply nozzle 13 to the mist sprayed in the above manner. Liquid fuel, and the aforementioned liquid fuel is combusted once.

在此，在對該一次燃燒用氣體供給噴嘴13供給第2燃燒用氣體時，係在對一次燃燒用氣體供給噴嘴13導引第2燃燒用氣體之第2燃燒用氣體供給管13b，連接供給氧之氧供給管13b1及供給空氣之空氣供給管13b2，並且，設置調整供給至前述氧供給管13b1之氧之量的氧調整閥13a1，以及設置調整供給至前述空氣供給管13b2之空氣之量的空氣調整閥13a2。 Here, when the second combustion gas is supplied to the primary combustion gas supply nozzle 13, the second combustion gas supply pipe 13b that guides the second combustion gas to the primary combustion gas supply nozzle 13 is connected and supplied An oxygen supply pipe 13b1 for oxygen and an air supply pipe 13b2 for supplying air, and an oxygen adjustment valve 13a1 for adjusting the amount of oxygen supplied to the oxygen supply pipe 13b1, and an amount of air supplied to the air supply pipe 13b2 are installed The air adjustment valve 13a2.

並且，在與前述一次燃燒用氣體供給噴嘴13相隔離之外周側的爐壁1a之位置設置複數個氧供給噴嘴14，且使氧從各個氧供給噴嘴14之前端噴出至以前述方式進行一次燃燒之液體燃料，而使液體燃料進行二次燃燒。 In addition, a plurality of oxygen supply nozzles 14 are provided at the position of the furnace wall 1a on the outer peripheral side separated from the gas supply nozzle 13 for primary combustion, and oxygen is ejected from the front end of each oxygen supply nozzle 14 to perform primary combustion in the aforementioned manner. The liquid fuel is used for the secondary combustion of the liquid fuel.

在此，在對前述各個氧供給噴嘴14供給氧時，係對各個氧供給噴嘴14分別設置導引氧之氧供給管14b，並且在各個氧供給管14b分別設置調整供給至氧供給噴嘴14之氧之量的氧調整閥14a。 Here, when supplying oxygen to each of the aforementioned oxygen supply nozzles 14, an oxygen supply pipe 14b for guiding oxygen is provided for each oxygen supply nozzle 14, and each oxygen supply pipe 14b is provided to adjust the supply to the oxygen supply nozzle 14. Oxygen adjustment valve 14a for the amount of oxygen.

接著，針對在前述液體燃料燃燒裝置10中，使油等液體燃料從前述液體燃料供給噴嘴11之前端朝向爐1內噴出並使之燃燒之例加以說明。此外，圖中之各個閥係以反白顯示打開之情形，並以塗黑顯示關閉之情形。 Next, a description will be given of an example in which liquid fuel such as oil is sprayed into the furnace 1 from the front end of the liquid fuel supply nozzle 11 in the liquid fuel combustion device 10 and burned. In addition, each valve in the figure is shown in reverse white when it is open, and in black when it is closed.

在此，在圖2所示之第1例中，係藉由前述燃料調整閥11a，來調整透過燃料供給管11b供給至液體燃料供給噴嘴11之液體燃料之量，而使液體燃料從該液體燃料供給噴嘴11之前端朝向爐1內噴出，並且，使第1燃燒用氣體從前述噴霧用氣體供給噴嘴12之前端噴出，而使從液體燃料供給噴嘴11之前端噴出之液體燃料以霧狀噴霧。 Here, in the first example shown in FIG. 2, the amount of liquid fuel supplied to the liquid fuel supply nozzle 11 through the fuel supply pipe 11b is adjusted by the aforementioned fuel adjustment valve 11a, so that the liquid fuel is removed from the liquid fuel. The front end of the fuel supply nozzle 11 is sprayed into the furnace 1, and the first combustion gas is sprayed from the front end of the spraying gas supply nozzle 12, and the liquid fuel sprayed from the front end of the liquid fuel supply nozzle 11 is sprayed in a mist form .

並且，在如上方式使第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，而使從液體燃料供給噴嘴11之前端噴出之液體燃料以霧狀噴霧時，在第1例中，係使氧調整閥12a1及空氣調整閥12a2分別打開預定量，而使由氧與空氣成為預定比例而成之第1燃燒用氣體從前述第1燃燒用氣體供給管12b供給至噴霧用氣體供給噴嘴12，並且，使該第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，而使液體燃料噴霧，其中該氧調整閥12a1係設置在供給氧的氧供給管12b1，該空氣調整閥12a2係設置在供給空氣之空氣供給管12b2，該氧供給管12b1與該空氣供給管12b2係連接在將第1燃燒用氣體導引至噴霧用氣體供給噴嘴12之第1燃燒用氣體供給管12b。 In addition, when the first combustion gas is sprayed from the front end of the spraying gas supply nozzle 12 as described above, and the liquid fuel sprayed from the front end of the liquid fuel supply nozzle 11 is sprayed in a mist form, in the first example, The oxygen regulating valve 12a1 and the air regulating valve 12a2 are respectively opened by a predetermined amount, so that the first combustion gas, which is composed of oxygen and air in a predetermined ratio, is supplied from the first combustion gas supply pipe 12b to the spray gas supply nozzle 12, The first combustion gas is sprayed from the front end of the spraying gas supply nozzle 12 to spray liquid fuel, wherein the oxygen regulating valve 12a1 is provided in the oxygen supply pipe 12b1 for supplying oxygen, and the air regulating valve 12a2 is provided In the air supply pipe 12b2 for supplying air, the oxygen supply pipe 12b1 and the air supply pipe 12b2 are connected to a first combustion gas supply pipe 12b that guides the first combustion gas to the spray gas supply nozzle 12.

再者，還使第2燃燒用氣體從設置於前述噴霧用氣體供給噴嘴12之外周側的一次燃燒用氣體供給噴嘴13的前端，朝向如前述方式以霧狀噴霧之液體燃料噴出，而使前述液體燃料進行一次燃燒。 Furthermore, the second combustion gas is also sprayed from the tip of the primary combustion gas supply nozzle 13 provided on the outer peripheral side of the spray gas supply nozzle 12 toward the liquid fuel sprayed in a mist form as described above, so that the aforementioned The liquid fuel is burned once.

在此，在如上所述使第2燃燒用氣體從一次燃燒用氣體供給噴嘴13之前端朝向以霧狀噴霧之液體燃料噴出，而使液體燃料進行一次燃燒時，在第1例中，係將使氧調整閥13a1及空氣調整閥13a2分別打開預定量而使氧與空氣成為預定比例所得之第2燃燒用氣體，從前述第2燃燒 用氣體供給管13b供給至一次燃燒用氣體供給噴嘴13，並且，使該第2燃燒用氣體從一次燃燒用氣體供給噴嘴13之前端朝向以霧狀噴霧之液體燃料噴出，而使液體燃料進行一次燃燒，其中該氧調整閥13a1係設置在供給氧的氧供給管13b1，該空氣調整閥13a2係設置在供給空氣之空氣供給管13b2，該氧供給管13b1與該空氣供給管13b2係連接在將第2燃燒用氣體導引至一次燃燒用氣體供給噴嘴13之第2燃燒用氣體供給管13b。此外，當於如上方式從噴霧用氣體供給噴嘴12之前端噴出之第1燃燒用氣體及從一次燃燒用氣體供給噴嘴13之前端噴出之第2燃燒用氣體採用在空氣中混合有氧之燃燒用氣體時，就會藉由如上方式混合之氧而使以霧狀噴霧之液體燃料有效率地進行一次燃燒。 Here, when the second combustion gas is sprayed from the front end of the primary combustion gas supply nozzle 13 toward the liquid fuel sprayed in the form of a mist as described above, and the liquid fuel is combusted once, in the first example, The second combustion gas obtained by opening the oxygen regulating valve 13a1 and the air regulating valve 13a2 respectively by a predetermined amount so that oxygen and air become a predetermined ratio is obtained from the aforementioned second combustion gas The gas supply pipe 13b is used to supply the gas supply nozzle 13 for primary combustion, and the second combustion gas is ejected from the front end of the gas supply nozzle 13 for primary combustion toward the liquid fuel sprayed in the form of a mist, so that the liquid fuel is delivered once Combustion, wherein the oxygen regulating valve 13a1 is installed in the oxygen supply pipe 13b1 for supplying oxygen, the air regulating valve 13a2 is installed in the air supply pipe 13b2 for supplying air, and the oxygen supply pipe 13b1 and the air supply pipe 13b2 are connected to The second combustion gas is guided to the second combustion gas supply pipe 13b of the primary combustion gas supply nozzle 13. In addition, when the first combustion gas sprayed from the front end of the spray gas supply nozzle 12 and the second combustion gas sprayed from the front end of the primary combustion gas supply nozzle 13 in the above manner are used for combustion in which oxygen is mixed in the air In the case of gas, the liquid fuel sprayed in the form of mist will be burned efficiently by the oxygen mixed in the above manner.

接著，對於如前所述從液體燃料供給噴嘴11之前端朝向爐1內噴出而經一次燃燒之液體燃料，使氧從如前所述設置在與一次燃燒用氣體供給噴嘴13相隔離之外周側之爐壁1a的位置之各個氧供給噴嘴14之前端噴出，而使經一次燃燒之液體燃料更進一步進行二次燃燒。此外，在如上方式使氧從各個氧供給噴嘴14之前端噴出，而使經一次燃燒之液體燃料更進一步進行二次燃燒時，係藉由設置在將氧導引至各個氧供給噴嘴14之各個氧供給管14b的氧調整閥14a，來調整透過各個氧供給管14b從各個氧供給噴嘴14之前端噴出之氧的量，並且使從液體燃料供給噴嘴11噴出之液體燃料適當地進行二次燃燒。 Next, for the liquid fuel sprayed from the front end of the liquid fuel supply nozzle 11 into the furnace 1 and burned as described above, oxygen is provided on the outer peripheral side separated from the gas supply nozzle 13 for primary combustion as described above. The oxygen supply nozzle 14 at the position of the furnace wall 1a is sprayed from the front end, so that the liquid fuel that has undergone the primary combustion is further combusted. In addition, when oxygen is ejected from the front end of each oxygen supply nozzle 14 in the above manner, and the liquid fuel that has undergone the primary combustion is further subjected to secondary combustion, it is arranged to guide oxygen to each of the oxygen supply nozzles 14 The oxygen adjustment valve 14a of the oxygen supply pipe 14b adjusts the amount of oxygen ejected from the front end of each oxygen supply nozzle 14 through each oxygen supply pipe 14b, and appropriately performs secondary combustion of the liquid fuel ejected from the liquid fuel supply nozzle 11 .

在此，當使氧與空氣成為預定比例所得之燃燒用氣體從噴霧用氣體供給噴嘴12或一次燃燒用氣體供給噴嘴13噴出至如前所述從液體燃料供給噴嘴11之前端朝向爐1內噴出之液體燃料，而使前述液體燃料進 行一次燃燒時，液體燃料會有效率地進行一次燃燒。然後，當如前所述使適量之氧從各個氧供給噴嘴14之前端噴出，而使有效率地經一次燃燒之液體燃料更進一步進行二次燃燒時，即可使經一次燃燒之液體燃料在廣泛之範圍內有效率地進行二次燃燒，而使液體燃料之熱效率更進一步提升而謀求省能源化，並且，與使多量之氧一起供給至燃燒用氣體而使液體燃料燃燒之情形相比較，可使在燃燒時所產生之噪音降低。 Here, when the combustion gas obtained by making oxygen and air into a predetermined ratio is sprayed from the spray gas supply nozzle 12 or the primary combustion gas supply nozzle 13 to the front end of the liquid fuel supply nozzle 11 into the furnace 1 as described above The liquid fuel, and the aforementioned liquid fuel enters When one is burned, the liquid fuel will be burned efficiently. Then, when an appropriate amount of oxygen is ejected from the front end of each oxygen supply nozzle 14 as described above, and the liquid fuel that has been combusted once more efficiently undergoes secondary combustion, the liquid fuel that has been combusted can be The post-combustion is carried out efficiently in a wide range, and the thermal efficiency of the liquid fuel is further improved to achieve energy saving, and compared with the case where a large amount of oxygen is supplied to the combustion gas and the liquid fuel is combusted, It can reduce the noise generated during combustion.

再者，即使在圖3所示之第2例中，也與前述第1例同樣地，藉由前述燃料調整閥11a來調整透過燃料供給管11b供給至液體燃料供給噴嘴11之液體燃料的量，且使液體燃料從該液體燃料供給噴嘴11之前端朝向爐1內噴出，並且，使第1燃燒用氣體從前述噴霧用氣體供給噴嘴12之前端噴出，而使從液體燃料供給噴嘴11之前端噴出之液體燃料以霧狀噴霧。 Furthermore, even in the second example shown in FIG. 3, as in the first example, the amount of liquid fuel supplied to the liquid fuel supply nozzle 11 through the fuel supply pipe 11b is adjusted by the fuel adjustment valve 11a. , And the liquid fuel is sprayed from the front end of the liquid fuel supply nozzle 11 toward the inside of the furnace 1, and the first combustion gas is sprayed from the front end of the spray gas supply nozzle 12, and the liquid fuel is sprayed from the front end of the liquid fuel supply nozzle 11. The sprayed liquid fuel is sprayed in mist.

在此，在如上方式使第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，而使從液體燃料供給噴嘴11之前端噴出之液體燃料以霧狀噴霧時，在第2例中，係使氧調整閥12a1關閉，另一方面使空氣調整閥12a2打開預定量，而使由預定量之空氣所構成之第1燃燒用氣體從前述第1燃燒用氣體供給管12b供給至噴霧用氣體供給噴嘴12，並且，使該第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，而使液體燃料噴霧，其中該氧調整閥12a1係設置在供給氧的氧供給管12b1，該空氣調整閥12a2係設置在供給空氣之空氣供給管12b2，該氧供給管12b1與該空氣供給管12b2係連接在將第1燃燒用氣體導引至噴霧用氣體供給噴嘴12之第1燃燒用氣體供給管12b。 Here, when the first combustion gas is sprayed from the front end of the spraying gas supply nozzle 12 as described above, and the liquid fuel sprayed from the front end of the liquid fuel supply nozzle 11 is sprayed in a mist form, in the second example, The oxygen regulating valve 12a1 is closed, and the air regulating valve 12a2 is opened by a predetermined amount, so that the first combustion gas composed of a predetermined amount of air is supplied from the first combustion gas supply pipe 12b to the spray gas supply Nozzle 12, and the first combustion gas is ejected from the front end of the spraying gas supply nozzle 12 to spray liquid fuel, wherein the oxygen regulating valve 12a1 is provided in the oxygen supply pipe 12b1 for supplying oxygen, and the air regulating valve 12a2 is installed in an air supply pipe 12b2 that supplies air, and the oxygen supply pipe 12b1 and the air supply pipe 12b2 are connected to a first combustion gas supply pipe 12b that guides the first combustion gas to the spray gas supply nozzle 12 .

並且，在使第2燃燒用氣體從設置在前述噴霧用氣體供給噴嘴12之外周側的一次燃燒用氣體供給噴嘴13之前端朝向如前所述以霧狀噴霧之液體燃料噴出，而使前述液體燃料進行一次燃燒時，在第2例中，係使氧調整閥13a1打開預定量，另一方面使空氣調整閥13a2關閉，而使由預定量之氧所構成之第1燃燒用氣體從前述第2燃燒用氣體供給管13b供給至一次燃燒用氣體供給噴嘴13，且使該第2燃燒用氣體從一次燃燒用氣體供給噴嘴13之前端朝向以霧狀噴霧之液體燃料噴出，而使液體燃料進行一次燃燒，其中該氧調整閥13a1係設置在供給氧的氧供給管13b1，該空氣調整閥13a2係設置在供給空氣之空氣供給管13b2，該氧供給管13b1與該空氣供給管13b2係連接在將第2燃燒用氣體導引至一次燃燒用氣體供給噴嘴13之第2燃燒用氣體供給管13b。 In addition, the second combustion gas is sprayed from the front end of the primary combustion gas supply nozzle 13 provided on the outer peripheral side of the spray gas supply nozzle 12 toward the liquid fuel sprayed in the form of mist as described above, so that the liquid When the fuel is burned once, in the second example, the oxygen regulating valve 13a1 is opened by a predetermined amount, and the air regulating valve 13a2 is closed on the other hand, so that the first combustion gas composed of a predetermined amount of oxygen is removed from the aforementioned first combustion gas 2 The combustion gas supply pipe 13b is supplied to the primary combustion gas supply nozzle 13, and the second combustion gas is sprayed from the front end of the primary combustion gas supply nozzle 13 toward the liquid fuel sprayed in the form of a mist, so that the liquid fuel is discharged. For primary combustion, the oxygen regulating valve 13a1 is installed in the oxygen supply pipe 13b1 for supplying oxygen, the air regulating valve 13a2 is installed in the air supply pipe 13b2 for supplying air, and the oxygen supply pipe 13b1 and the air supply pipe 13b2 are connected to The second combustion gas is guided to the second combustion gas supply pipe 13b of the primary combustion gas supply nozzle 13.

在此，即使在如上方式使由預定量之空氣所構成之第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，另一方面使由預定量之氧所構成之第2燃燒用氣體從一次燃燒用氣體供給噴嘴13之前端噴出時，亦與前述第1例之情形同樣地，除了空氣之外還混合適量之氧，而使以霧狀噴霧之液體燃料有效率地進行一次燃燒。 Here, even if the first combustion gas composed of a predetermined amount of air is ejected from the front end of the spray gas supply nozzle 12 as described above, on the other hand, the second combustion gas composed of a predetermined amount of oxygen is ejected from When the gas supply nozzle 13 for primary combustion is ejected from the front end, as in the case of the first example, an appropriate amount of oxygen is mixed in addition to air to efficiently perform primary combustion of the liquid fuel sprayed in the form of mist.

然後，與前述第1例之情形同樣地，使氧從前述各個氧供給噴嘴14之前端噴出至如前所述經一次燃燒之液體燃料，並使經一次燃燒之液體燃料更進一步進行二次燃燒。 Then, as in the case of the aforementioned first example, oxygen is ejected from the front end of each of the aforementioned oxygen supply nozzles 14 to the liquid fuel that has undergone the primary combustion as described above, and the liquid fuel that has undergone the primary combustion is further subjected to secondary combustion. .

如此，與前述第1例之情形同樣地，可使有效率地經一次燃燒之液體燃料更進一步在廣泛之範圍內有效率地進行二次燃燒，以更進一 步提升熱效率而謀求省能源化，並且，可使在將氧供給至燃燒用氣體而使液體燃料燃燒時所產生之燃燒時的噪音降低。 In this way, as in the case of the aforementioned first example, the liquid fuel that has been efficiently burned once can be further burned more efficiently in a wide range, so as to further improve The thermal efficiency is improved to save energy, and it is possible to reduce the noise during combustion that is generated when the liquid fuel is combusted by supplying oxygen to the combustion gas.

並且，即使在圖4所示之第3例中，亦與前述第1及第2例同樣地，藉由前述燃料調整閥11a來調整透過燃料供給管11b供給至液體燃料供給噴嘴11之液體燃料的量，使液體燃料從該液體燃料供給噴嘴11之前端朝向爐1內噴出，並且，使第1燃燒用氣體從前述噴霧用氣體供給噴嘴12之前端噴出，而使從液體燃料供給噴嘴11之前端噴出之液體燃料以霧狀噴霧。 In addition, even in the third example shown in FIG. 4, as in the first and second examples described above, the fuel adjustment valve 11a adjusts the liquid fuel supplied to the liquid fuel supply nozzle 11 through the fuel supply pipe 11b. The amount of liquid fuel is sprayed from the front end of the liquid fuel supply nozzle 11 into the furnace 1, and the first combustion gas is sprayed from the front end of the spray gas supply nozzle 12, and the liquid fuel is sprayed from the front end of the liquid fuel supply nozzle 11 The liquid fuel sprayed from the front end is sprayed in mist.

在此，在如上方式使第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，而使從液體燃料供給噴嘴11之前端噴出之液體燃料以霧狀噴霧時，在第3例中，係使氧調整閥12a1打開預定量，另一方面使空氣調整閥12a2關閉，而使由預定量之氧所構成之第1燃燒用氣體從前述第1燃燒用氣體供給管12b供給至噴霧用氣體供給噴嘴12，而使該第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，以使液體燃料噴霧；其中該氧調整閥12a1係設置在供給氧的氧供給管12b1，該空氣調整閥12a2係設置在供給空氣之空氣供給管12b2，該氧供給管12b1與該空氣供給管12b2係連接在將第1燃燒用氣體導引至噴霧用氣體供給噴嘴12之第1燃燒用氣體供給管12b。 Here, when the first combustion gas is sprayed from the front end of the spraying gas supply nozzle 12 as described above, and the liquid fuel sprayed from the front end of the liquid fuel supply nozzle 11 is sprayed in a mist form, in the third example, The oxygen regulating valve 12a1 is opened by a predetermined amount, while the air regulating valve 12a2 is closed, so that the first combustion gas composed of a predetermined amount of oxygen is supplied from the first combustion gas supply pipe 12b to the spray gas supply Nozzle 12, and the first combustion gas is ejected from the front end of the spraying gas supply nozzle 12 to spray liquid fuel; wherein the oxygen regulating valve 12a1 is provided in the oxygen supply pipe 12b1 for supplying oxygen, and the air regulating valve 12a2 It is provided in an air supply pipe 12b2 for supplying air, and the oxygen supply pipe 12b1 and the air supply pipe 12b2 are connected to a first combustion gas supply pipe 12b that guides the first combustion gas to the spray gas supply nozzle 12.

再者，在使第2燃燒用氣體從設置在前述噴霧用氣體供給噴嘴12之外周側的一次燃燒用氣體供給噴嘴13的前端朝向如前所述以霧狀噴霧之液體燃料噴出，而使前述液體燃料進行一次燃燒時，在第3例中，係使氧調整閥13a1關閉，另一方面使空氣調整閥13a2打開預定量，而使 由預定量之空氣所構成之第2燃燒用氣體從前述第2燃燒用氣體供給管13b供給至一次燃燒用氣體供給噴嘴13，且使該第1燃燒用氣體從一次燃燒用氣體供給噴嘴13之前端朝向以霧狀噴霧之液體燃料噴出，而使液體燃料進行一次燃燒，其中該氧調整閥13a1係設置在供給氧的氧供給管13b1，該空氣調整閥13a2係設置在供給空氣之空氣供給管13b2，該氧供給管13b1與該空氣供給管13b2係連接在將第2燃燒用氣體導引至一次燃燒用氣體供給噴嘴13之第2燃燒用氣體供給管13b。 Furthermore, the second combustion gas is sprayed from the tip of the primary combustion gas supply nozzle 13 provided on the outer peripheral side of the spray gas supply nozzle 12 toward the liquid fuel sprayed in the form of mist as described above, so that the aforementioned When the liquid fuel is combusted once, in the third example, the oxygen regulating valve 13a1 is closed, and on the other hand, the air regulating valve 13a2 is opened by a predetermined amount, so that The second combustion gas composed of a predetermined amount of air is supplied from the second combustion gas supply pipe 13b to the primary combustion gas supply nozzle 13, and the first combustion gas is supplied from one of the primary combustion gas supply nozzles 13 The front end is sprayed toward the liquid fuel sprayed in a mist form to cause the liquid fuel to be burned once. The oxygen regulating valve 13a1 is installed in the oxygen supply pipe 13b1 for supplying oxygen, and the air regulating valve 13a2 is installed on the air supply pipe for supplying air. 13b2, the oxygen supply pipe 13b1 and the air supply pipe 13b2 are connected to a second combustion gas supply pipe 13b that guides the second combustion gas to the primary combustion gas supply nozzle 13.

在此，在如上方式使由預定量之氧所構成之第1燃燒用氣體從噴霧用氣體供給噴嘴12之前端噴出，另一方面使由預定量之空氣所構成之第2燃燒用氣體從一次燃燒用氣體供給噴嘴13之前端噴出時，亦與前述第1例及第2例之情形同樣地，除了空氣之外還混合適量之氧，而使以霧狀噴霧之液體燃料有效率地進行一次燃燒。 Here, in the above manner, the first combustion gas composed of a predetermined amount of oxygen is ejected from the front end of the spray gas supply nozzle 12, and on the other hand, the second combustion gas composed of a predetermined amount of air is ejected from the primary When spraying from the front end of the combustion gas supply nozzle 13, as in the first and second examples described above, in addition to air, an appropriate amount of oxygen is mixed, so that the liquid fuel sprayed in the form of a mist can be efficiently carried out once. combustion.

然後，與前述第1例及第2例之情形同樣地，使氧從前述各個氧供給噴嘴14之前端噴出至如前所述經一次燃燒之液體燃料，並使經一次燃燒之液體燃料更進一步進行二次燃燒。 Then, as in the case of the first and second examples described above, oxygen is ejected from the front end of each oxygen supply nozzle 14 to the liquid fuel that has been burned once as described above, and the liquid fuel that has been burned is made further Perform secondary combustion.

如此，與前述第1例及第2例之情形同樣地，可使有效率地經一次燃燒之液體燃料更進一步在廣泛之範圍內有效率地進行二次燃燒，以更進一步提升熱效率而謀求省能源化，並且可使在將氧供給至燃燒用氣體而使液體燃料燃燒時所產生之燃燒時的噪音降低。 In this way, as in the case of the first and second examples described above, the liquid fuel that has been efficiently burned once can be further burned more efficiently in a wide range, and the thermal efficiency can be further improved to achieve savings. It is energy-saving and can reduce the noise during combustion that is generated when the liquid fuel is burned by supplying oxygen to the combustion gas.

在此，於該實施形態之液體燃料燃燒裝置10中，係使供給氧之氧供給管12b1及供給空氣之空氣供給管12b2連接在用以將第1燃燒用氣體導引至設置於液體燃料供給噴嘴11之外周側之噴霧用氣體供給噴 嘴12之第1燃燒用氣體供給管12b，並且，使供給氧之氧供給管13b1及供給空氣之空氣供給管13b2連接在用以將第2燃燒用氣體導引至設置於該噴霧用氣體供給噴嘴12之外周側之一次燃燒用氣體供給噴嘴13之第2燃燒用氣體供給管13b，但是，無須使供給氧之氧供給管12b1、13b1、及供給空氣之空氣供給管12b2、13b2連接在前述第1燃燒用氣體供給管12b與第2燃燒用氣體供給管13b兩者。 Here, in the liquid fuel combustion device 10 of this embodiment, an oxygen supply pipe 12b1 for supplying oxygen and an air supply pipe 12b2 for supplying air are connected to guide the first combustion gas to the liquid fuel supply. Gas supply jet for spraying on the outer peripheral side of nozzle 11 The first combustion gas supply pipe 12b of the nozzle 12, and the oxygen supply pipe 13b1 for supplying oxygen and the air supply pipe 13b2 for supplying air are connected to guide the second combustion gas to the spray gas supply The second combustion gas supply pipe 13b of the primary combustion gas supply nozzle 13 on the outer periphery of the nozzle 12, but it is not necessary to connect the oxygen supply pipes 12b1, 13b1, and the air supply pipes 12b2, 13b2 for supplying oxygen to the aforementioned Both the first combustion gas supply pipe 12b and the second combustion gas supply pipe 13b.

雖未圖示，但亦可例如僅使供給氧之氧供給管12b1連接在用以將第1燃燒用氣體導引至噴霧用氣體供給噴嘴12之第1燃燒用氣體供給管12b，另一方面僅使供給空氣之空氣供給管13b2連接在用以將第2燃燒用氣體導引至一次燃燒用氣體供給噴嘴13之第2燃燒用氣體供給管13b，或僅使與上述情形相反之管連接。 Although not shown in the figure, for example, only the oxygen supply pipe 12b1 for supplying oxygen may be connected to the first combustion gas supply pipe 12b for guiding the first combustion gas to the spray gas supply nozzle 12. On the other hand, Only the air supply pipe 13b2 for supplying air is connected to the second combustion gas supply pipe 13b for guiding the second combustion gas to the primary combustion gas supply nozzle 13, or only the pipe opposite to the above is connected.

1:爐 1: Furnace

1a:爐壁 1a: furnace wall

10:液體燃料燃燒裝置 10: Liquid fuel combustion device

11:液體燃料供給噴嘴 11: Liquid fuel supply nozzle

11a:燃料調整閥 11a: Fuel adjustment valve

11b:燃料供給管 11b: Fuel supply pipe

12:噴霧用氣體供給噴嘴 12: Gas supply nozzle for spray

12a1:氧調整閥 12a1: Oxygen adjustment valve

12a2:空氣調整閥 12a2: Air adjustment valve

12b:第1燃燒用氣體供給管 12b: The first combustion gas supply pipe

12b1:氧供給管 12b1: Oxygen supply pipe

12b2:空氣供給管 12b2: Air supply pipe

13:一次燃燒用氣體供給噴嘴 13: Gas supply nozzle for primary combustion

13a1:氧調整閥 13a1: Oxygen adjustment valve

13a2:空氣調整閥 13a2: Air adjustment valve

13b:第2燃燒用氣體供給管 13b: The second combustion gas supply pipe

13b1:氧供給管 13b1: Oxygen supply pipe

13b2:空氣供給管 13b2: Air supply pipe

14:氧供給噴嘴 14: Oxygen supply nozzle

14a:氧調整閥 14a: Oxygen adjustment valve

14b:氧供給管 14b: Oxygen supply pipe

Claims (2)

一種液體燃料燃燒裝置，係在使從液體燃料供給噴嘴之前端噴出之液體燃料與從其周圍噴出之燃燒用氣體混合並使之燃燒者，其中，在前述液體燃料供給噴嘴之外周側，設置用以供給使從該液體燃料供給噴嘴之前端噴出之液體燃料以霧狀噴霧之第1燃燒用氣體的噴霧用氣體供給噴嘴，並且，在該噴霧用氣體供給噴嘴之外周側設置一次燃燒用氣體供給噴嘴，且使第2燃燒用氣體從該一次燃燒用氣體供給噴嘴噴出至前述之以霧狀噴霧之液體燃料，而使前述液體燃料進行一次燃燒，此時，使氧導入於前述之供給至噴霧用氣體供給噴嘴之第1燃燒用氣體及供給至一次燃燒用氣體供給噴嘴之第2燃燒用氣體的至少一者，並且，在與前述一次燃燒用氣體供給噴嘴相隔離之外周側的位置設置氧供給噴嘴，且使氧從該氧供給噴嘴噴出至前述之進行一次燃燒之液體燃料，而使液體燃料進行二次燃燒。 A liquid fuel combustion device that mixes and burns the liquid fuel sprayed from the front end of the liquid fuel supply nozzle and the combustion gas sprayed from its surroundings, wherein the liquid fuel supply nozzle is provided on the outer peripheral side A spray gas supply nozzle for supplying the first combustion gas for spraying the liquid fuel sprayed from the front end of the liquid fuel supply nozzle in a mist form, and a primary combustion gas supply is provided on the outer periphery of the spray gas supply nozzle Nozzle, and the second combustion gas is ejected from the primary combustion gas supply nozzle to the aforementioned liquid fuel sprayed in the form of a mist, so that the aforementioned liquid fuel is burned once, at this time, oxygen is introduced into the aforementioned supply to the spray At least one of the first combustion gas supplied to the gas supply nozzle and the second combustion gas supplied to the primary combustion gas supply nozzle, and oxygen is provided at a position on the outer peripheral side isolated from the aforementioned primary combustion gas supply nozzle The nozzle is supplied, and oxygen is ejected from the oxygen supply nozzle to the aforementioned liquid fuel for primary combustion, and the liquid fuel is subjected to secondary combustion. 如請求項1所述之液體燃料燃燒裝置，其中，設置有用以調整供給至前述液體燃料供給噴嘴之液體燃料之量的燃料調整閥，並且，在前述之供給第1燃燒用氣體之噴霧用氣體供給噴嘴、及前述之供給第2燃燒用氣體之一次燃燒用氣體供給噴嘴的至少一者，設置調整前述第1燃燒用氣體及/或第2燃燒用氣體之空氣與氧之比率的調整閥。 The liquid fuel combustion device according to claim 1, wherein a fuel adjustment valve for adjusting the amount of liquid fuel supplied to the liquid fuel supply nozzle is provided, and the spray gas for supplying the first combustion gas At least one of the supply nozzle and the primary combustion gas supply nozzle for supplying the second combustion gas is provided with an adjustment valve that adjusts the ratio of air to oxygen in the first combustion gas and/or the second combustion gas.
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