TWI833206B - Ammonia fuel combustion device - Google Patents

Ammonia fuel combustion device Download PDF

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Publication number
TWI833206B
TWI833206B TW111115843A TW111115843A TWI833206B TW I833206 B TWI833206 B TW I833206B TW 111115843 A TW111115843 A TW 111115843A TW 111115843 A TW111115843 A TW 111115843A TW I833206 B TWI833206 B TW I833206B
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Taiwan
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ammonia
fuel
burner
supply pipe
supplied
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TW111115843A
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Chinese (zh)
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TW202311666A (en
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河本祐作
田口脩平
仲井和成
大倉莉奈
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日商中外爐工業股份有限公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/22Fuel supply systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C1/00Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
    • F23C1/08Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air liquid and gaseous fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J7/00Arrangement of devices for supplying chemicals to fire
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L7/00Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/02Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F23R3/04Air inlet arrangements
    • F23R3/10Air inlet arrangements for primary air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/30Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising fuel prevapourising devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/36Supply of different fuels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

The present invention provides an ammonia fuel combustion device in which ammonia gas NH3 supplied through an ammonia supply pipe 11 and combustion air Air supplied through an air supply pipe 12 are mixed by a combustion burner 10 and burned in a furnace 1, wherein an injection device 20 to which hydrocarbon-based fuel CmHn is supplied through an auxiliary fuel supply pipe 21 is provided near the combustion burner, and hydrocarbon-based fuel is injected into the furnace toward a flame from the combustion burner and combusted.

Description

氨燃料燃燒裝置 Ammonia fuel combustion device

本發明係關於一種使氨燃料與燃燒用空氣混合並藉由燃燒器而在爐內使之燃燒之氨燃料燃燒裝置。特別是具有下述特點:在使氨燃料(例如氨氣)與燃燒用空氣混合並藉由燃燒器而在爐內使之燃燒之際,除了氨燃料之外,亦將烴系燃料供給至爐內,藉由烴系燃料使氨燃料在爐內充分地燃燒。 The present invention relates to an ammonia fuel combustion device that mixes ammonia fuel and combustion air and combusts them in a furnace through a burner. In particular, when ammonia fuel (for example, ammonia gas) is mixed with combustion air and burned in the furnace by a burner, hydrocarbon-based fuel is also supplied to the furnace in addition to the ammonia fuel. In the furnace, the ammonia fuel is fully burned by the hydrocarbon fuel.

在使燃料與燃燒用空氣混合並使之燃燒之燃燒裝置中,一般而言,係採用使用烴系燃料作為燃料者。 In a combustion device that mixes fuel with combustion air and combusts it, generally, a hydrocarbon-based fuel is used as the fuel.

然而,當如上述方式使烴系燃料與燃燒用空氣混合並使之燃燒時,會有產生許多二氧化碳CO2等溫室效應氣體之問題。 However, when a hydrocarbon-based fuel is mixed with combustion air and burned as described above, there is a problem that a large amount of greenhouse effect gases such as carbon dioxide CO 2 are produced.

並且,近年來,期待減少二氧化碳CO2等溫室效應氣體,而正在研究使用烴系燃料以外的燃料作為燃料。 In addition, in recent years, in order to reduce greenhouse effect gases such as carbon dioxide CO 2 , studies have been conducted on using fuels other than hydrocarbon-based fuels as fuel.

並且,已知以往使用氨燃料作為燃燒裝置之燃料,惟氨燃料與烴系燃料相比較,其燃燒性差,難以使之完全燃燒,且在低溫下進行燃燒時容易失火,另一方面,當使之強力地燃燒時,會有火焰溫度變高且NOx之產生量增加的問題。 In addition, it is known that ammonia fuel has been used as a fuel for combustion devices in the past. However, compared with hydrocarbon-based fuels, ammonia fuel has poor combustibility and is difficult to completely burn. It is easy to catch fire when burned at low temperatures. On the other hand, when used, When burning intensely, there is a problem that the flame temperature becomes high and the amount of NOx produced increases.

並且,如前所述在使燃燒性差之氨燃料燃燒之際,在專利文獻1中,提案有一種在預先使低燃燒性燃料之氨與燃燒用空氣混合而均勻化之後,一面藉由旋流器(swirler)使如上述方式預先混合之氣體旋轉並強力地進行攪拌,一面使之燃燒,以提升氨之燃燒性。 Furthermore, as mentioned above, when burning ammonia fuel with poor combustibility, Patent Document 1 proposes a method of mixing ammonia, which is a low combustibility fuel, with combustion air and making them homogenous, while using a swirling flow. The swirler rotates the gas premixed in the above manner and stirs it vigorously while burning it to improve the flammability of ammonia.

然而,如專利文獻1所示,當一面藉由旋流器使預先混合有氨及燃燒用空氣之氣體旋轉並將其強力地進行攪拌,一面使之燃燒時,與習知之情形同樣地,會有氨快速地被燃燒使得火焰溫度變高而產生許多之NOx的問題。 However, as shown in Patent Document 1, when the gas mixed with ammonia and combustion air in advance is rotated by a cyclone and strongly stirred while being burned, as in the conventional case, the gas will be burned. Ammonia is burned rapidly, causing the flame temperature to become high and causing many NOx problems.

並且,在專利文獻2中,提案有一種沿著燃燒裝置燃燒器之圓周,交互地設置使氨燃燒之氨燃燒器及使天然氣燃燒之天然氣燃燒器,且分別在氨燃燒器及天然氣燃燒器中使氨及天然氣燃燒者。 Furthermore, Patent Document 2 proposes a method in which an ammonia burner for burning ammonia and a natural gas burner for burning natural gas are alternately provided along the circumference of the burner of the combustion device, and the ammonia burner and the natural gas burner are respectively provided. Those who burn ammonia and natural gas.

然而,由於沿著燃燒裝置燃燒器之圓周交互地設置氨燃燒器及天然氣燃燒器,因此設備成本會增高,而且氨之燃燒火焰與天然氣之燃燒火焰係分開,因此整體之燃燒會變得不穩定,而難以均勻地變更其與天然氣之比例並使之燃燒,且亦非常難以使氨完全地燃燒。 However, since ammonia burners and natural gas burners are alternately arranged along the circumference of the burner of the combustion device, the equipment cost will increase, and the combustion flame of ammonia and the combustion flame of natural gas are separated, so the overall combustion will become unstable. , and it is difficult to uniformly change the ratio of it to natural gas and burn it, and it is also very difficult to completely burn ammonia.

(先前技術文獻) (prior technical literature)

(專利文獻) (patent document)

專利文獻1:日本特開2016-130619號公報 Patent Document 1: Japanese Patent Application Publication No. 2016-130619

專利文獻2:日本特開2020-139700號公報 Patent Document 2: Japanese Patent Application Publication No. 2020-139700

本發明之課題係在於解決氨燃料燃燒裝置之前述問題,該氨燃料燃燒裝置係使氨燃料與燃燒用空氣混合並藉由燃燒器而在爐內使之燃燒者。 An object of the present invention is to solve the above-mentioned problems of an ammonia fuel burning device that mixes ammonia fuel with combustion air and combusts them in a furnace with a burner.

亦即,本發明之課題係在於:在如前所述使氨燃料與燃燒用空氣混合並藉由燃燒器而在爐內使之燃燒的氨燃料燃燒裝置中,除了氨燃料之外,亦將烴系燃料供給至爐內,可藉由烴系燃料使氨燃料在爐內充分地燃燒。 That is, the subject of the present invention is that in an ammonia fuel combustion device in which ammonia fuel and combustion air are mixed and burned in a furnace by a burner as described above, in addition to the ammonia fuel, The hydrocarbon-based fuel is supplied into the furnace, and the ammonia fuel can be fully burned in the furnace by the hydrocarbon-based fuel.

在本發明之氨燃料燃燒裝置中,為了要解決前述之課題,係在藉由燃燒器使經由氨供給管而供給之氨燃料與經由空氣供給管而供給之燃燒用空氣混合而在爐內使之燃燒的氨燃料燃燒裝置中,在前述燃燒器之附近設置有經由輔助燃料供給管而被供給烴系燃料之噴射裝置,藉由前述噴射裝置,使烴系燃料朝前述燃燒器所產生之火焰噴射至爐內並使之燃燒。 In order to solve the aforementioned problems in the ammonia fuel combustion device of the present invention, the ammonia fuel supplied through the ammonia supply pipe and the combustion air supplied through the air supply pipe are mixed with the burner and used in the furnace. In the ammonia fuel combustion device, an injection device for supplying hydrocarbon fuel through an auxiliary fuel supply pipe is provided near the burner, and the hydrocarbon fuel is directed toward the flame generated by the burner by the injection device. Spray it into the furnace and let it burn.

並且,如本發明之氨燃料燃燒裝置,燃燒器係使經由氨供給管而供給之氨燃料與經由空氣供給管而供給之燃燒用空氣混合而在爐內使之燃燒,在燃燒器之附近設置有經由輔助燃料供給管而被供給烴系燃料之噴射裝置,藉由該噴射裝置,使烴系燃料朝藉由燃燒器混合氨燃料與燃燒用空氣而在爐內使之燃燒所形成的火焰噴射並使之燃燒,當如此形成時,燃燒性低之氨燃料會因藉由噴射裝置所噴射之烴系燃料而充分地燃燒,並且與僅使烴系燃料燃燒之情形相比較,會抑制二氧化碳CO2之產生。 Moreover, like the ammonia fuel combustion device of the present invention, the burner mixes the ammonia fuel supplied through the ammonia supply pipe and the combustion air supplied through the air supply pipe to burn them in the furnace, and is installed near the burner. There is an injection device that supplies hydrocarbon fuel through an auxiliary fuel supply pipe. The injection device injects the hydrocarbon fuel toward a flame formed by mixing ammonia fuel and combustion air in the burner and burning them in the furnace. When it is formed in this way, the ammonia fuel with low combustibility is fully burned by the hydrocarbon fuel injected by the injection device, and compared with the case where only the hydrocarbon fuel is burned, the carbon dioxide CO2 is suppressed 2 is produced.

再者,由於在氨燃料進行燃燒時添加烴系燃料,因此火焰會成為一個而使燃燒穩定。 Furthermore, since the hydrocarbon-based fuel is added when the ammonia fuel is burned, the flame becomes one and the combustion is stabilized.

在此,在本發明之氨燃料燃燒裝置中,可設置:氨調整閥,係用以調整經由前述氨供給管而供給至燃燒器之氨燃料的量;空氣調整閥,係用以調 整經由前述空氣供給管而供給至燃燒器之燃燒用空氣的量;輔助燃料調整閥,係用以調整經由前述輔助燃料供給管而供給至噴射裝置之烴系燃料的量;以及控制裝置,係控制前述氨調整閥、前述空氣調整閥及前述輔助燃料調整閥。 Here, the ammonia fuel combustion device of the present invention may be provided with: an ammonia adjustment valve for adjusting the amount of ammonia fuel supplied to the burner through the ammonia supply pipe; and an air adjustment valve for adjusting the ammonia fuel combustion device. The amount of combustion air supplied to the burner via the air supply pipe is adjusted; the auxiliary fuel adjustment valve is used to adjust the amount of hydrocarbon fuel supplied to the injection device via the auxiliary fuel supply pipe; and the control device is The ammonia regulating valve, the air regulating valve and the auxiliary fuel regulating valve are controlled.

如此一來,藉由前述控制裝置,控制前述空氣調整閥,以調整經由前述空氣供給管而供給至燃燒器之燃燒用空氣的量,並且控制前述氨調整閥,以調整經由前述空氣供給管而供給至燃燒器之燃燒用空氣的量,而且控制前述輔助燃料調整閥,以調整經由輔助燃料供給管而供給至噴射裝置且從該噴射裝置朝燃燒器所產生之火焰噴射之烴系燃料的量,藉此,與前述同樣地可容易進行使氨燃料與烴系燃料穩定地燃燒而獲得所希望之發熱量,並且亦可簡單地進行控制,使經由氨供給管而供給至燃燒器之氨燃料、與經由輔助燃料供給管而從噴射裝置朝燃燒器所產生之火焰噴射之烴系燃料的比例均勻地變更,以獲得所希望之發熱量。 In this way, the aforementioned control device controls the aforementioned air regulating valve to regulate the amount of combustion air supplied to the burner through the aforementioned air supply pipe, and controls the aforementioned ammonia regulating valve to regulate the amount of combustion air supplied to the burner through the aforementioned air supply pipe. The amount of combustion air supplied to the burner is controlled, and the aforementioned auxiliary fuel adjustment valve is controlled to adjust the amount of hydrocarbon fuel supplied to the injection device via the auxiliary fuel supply pipe and injected from the injection device toward the flame generated by the burner. , thereby making it easy to stably combust the ammonia fuel and the hydrocarbon-based fuel to obtain the desired calorific value as described above, and it is also possible to simply control the ammonia fuel supplied to the burner through the ammonia supply pipe. , and the ratio of the hydrocarbon fuel injected from the injection device to the flame generated by the burner through the auxiliary fuel supply pipe is uniformly changed to obtain the desired calorific value.

並且,在本發明之氨燃料燃燒裝置中,係可使用液體氨作為前述氨燃料,且使液體氨經由前述氨供給管而呈霧狀地供給至前述燃燒器。當如上述方式使用液體氨作為氨燃料,且使液體氨經由前述氨供給管而呈霧狀地供給至前述燃燒器時,無須使經由氨供給管而供給至燃燒器之氨燃料氣體化,會減少使氨燃料氣體化之設備成本,並且與以氣體之狀態將氨燃料導引至燃燒器之情形相比較,氨供給管之配管等會變得簡單,而可使設備小型化。 Furthermore, in the ammonia fuel combustion device of the present invention, liquid ammonia can be used as the ammonia fuel, and the liquid ammonia can be supplied to the burner in a mist form through the ammonia supply pipe. When liquid ammonia is used as the ammonia fuel in the above manner and the liquid ammonia is supplied to the burner in a mist form through the ammonia supply pipe, it is not necessary to gasify the ammonia fuel supplied to the burner through the ammonia supply pipe. The cost of equipment for gasifying ammonia fuel is reduced, and compared with the case where ammonia fuel is introduced to the burner in a gaseous state, the piping of the ammonia supply pipe is simplified, and the equipment can be downsized.

在本發明之氨燃料燃燒裝置中,如前所述形成為:燃燒器係使經由氨供給管而供給之氨燃料與經由空氣供給管而供給之燃燒用空氣混合而在爐內使之燃燒,在燃燒器之附近設置有經由輔助燃料供給管而被供給烴系燃料之 噴射裝置,藉由該噴射裝置,使烴系燃料朝藉由燃燒器混合氨燃料與燃燒用空氣而在爐內使之燃燒所形成的火焰噴射並使之燃燒;因此,燃燒性低之氨燃料會因藉由噴射裝置所噴射之烴系燃料而充分地燃燒,並且與僅使烴系燃料燃燒之情形相比較,會抑制二氧化碳CO2之產生。 In the ammonia fuel combustion device of the present invention, as described above, the burner mixes the ammonia fuel supplied through the ammonia supply pipe and the combustion air supplied through the air supply pipe to burn them in the furnace. An injection device for supplying hydrocarbon-based fuel through an auxiliary fuel supply pipe is provided near the burner. This injection device causes the hydrocarbon-based fuel to be mixed with ammonia fuel and combustion air through the burner, and is then injected into the furnace. The flame formed by the combustion is injected and burned; therefore, the ammonia fuel with low combustibility is fully burned by the hydrocarbon fuel injected by the injection device, and compared with the case where only the hydrocarbon fuel is burned, the Inhibit the production of carbon dioxide CO2 .

1:爐 1: furnace

10:燃燒器 10:Burner

11:氨供給管 11: Ammonia supply pipe

11a:氨調整閥 11a: Ammonia adjustment valve

11b:噴霧噴嘴 11b: Spray nozzle

12:空氣供給管 12:Air supply pipe

12a:空氣調整閥 12a:Air adjustment valve

20:噴射裝置 20:Injection device

21:輔助燃料供給管 21: Auxiliary fuel supply pipe

21a:輔助燃料調整閥 21a: Auxiliary fuel adjustment valve

30:控制裝置 30:Control device

Air:燃燒用空氣 Air: air for combustion

CmHn:烴系燃料 CmHn: hydrocarbon fuel

NH3:氨氣 NH 3 : Ammonia gas

liq.NH3:液體氨 liq.NH 3 : liquid ammonia

圖1係本發明實施型態之氨燃料燃燒裝置的概略說明圖。 FIG. 1 is a schematic explanatory diagram of an ammonia fuel combustion device according to an embodiment of the present invention.

圖2係顯示變更例的概略說明圖,該變更例係在前述實施型態之氨燃料燃燒裝置中,使用液體氨作為氨燃料,且使液體氨經由氨供給管而呈霧狀地供給至燃燒器內。 FIG. 2 is a schematic explanatory diagram showing a modified example in which liquid ammonia is used as the ammonia fuel in the ammonia fuel combustion device of the aforementioned embodiment, and the liquid ammonia is supplied to the combustion in a mist state through the ammonia supply pipe. inside the device.

以下,依據圖式具體地說明本發明實施型態之氨燃料燃燒裝置。此外,本發明之氨燃料燃燒裝置並不限定於下述實施型態所示者,而是可在不變更發明之要旨的範圍內適當地變更實施者。 Hereinafter, the ammonia fuel combustion device according to the embodiment of the present invention will be specifically described based on the drawings. In addition, the ammonia fuel combustion device of the present invention is not limited to the embodiment shown below, and the embodiment can be appropriately modified within the scope that does not change the gist of the invention.

在本發明實施型態之氨燃料燃燒裝置中,如圖1所示,經由氨供給管11將氨燃料之氨氣NH3供給至設置於爐1之燃燒器10,並且經由空氣供給管12供給燃燒用空氣Air,使前述氨氣NH3與燃燒用空氣Air在燃燒器10中混合而在爐1內使之燃燒。 In the ammonia fuel combustion device according to the embodiment of the present invention, as shown in FIG. 1 , ammonia gas NH 3 of the ammonia fuel is supplied to the burner 10 provided in the furnace 1 through the ammonia supply pipe 11 and is also supplied through the air supply pipe 12 The combustion air Air mixes the ammonia gas NH 3 and the combustion air Air in the burner 10 and combusts them in the furnace 1 .

再者,在該實施型態之氨燃料燃燒裝置中,係在前述氨供給管11設置氨調整閥11a,並藉由控制裝置30來控制該氨調整閥11a,以調整供給至燃 燒器10之氨氣NH3的量,並且在前述空氣供給管12設置空氣調整閥12a,藉由前述控制裝置30來控制該空氣調整閥12a,以調整供給至燃燒器10之燃燒用空氣Air的量。 Furthermore, in the ammonia fuel combustion device of this embodiment, an ammonia adjustment valve 11a is provided in the ammonia supply pipe 11, and the ammonia adjustment valve 11a is controlled by the control device 30 to adjust the ammonia supply to the burner 10. The air supply pipe 12 is provided with an air regulating valve 12a, and the air regulating valve 12a is controlled by the control device 30 to adjust the amount of combustion air Air supplied to the burner 10.

再者,在該實施型態之氨燃料燃燒裝置中,在前述燃燒器10之附近設置噴射裝置20,將天然氣等烴系燃料CmHn經由輔助燃料供給管21而供給至該噴射裝置20,在前述輔助燃料供給管21設置輔助燃料調整閥21a,並藉由前述控制裝置30來控制該輔助燃料調整閥21a,以調整供給至噴射裝置20之烴系燃料CmHn的量,如上述方式,使供給至噴射裝置20之烴系燃料CmHn朝藉由前述燃燒器10所燃燒之火焰噴射並使之燃燒。 Furthermore, in the ammonia fuel combustion device of this embodiment, an injection device 20 is provided near the burner 10, and hydrocarbon fuel CmHn such as natural gas is supplied to the injection device 20 through the auxiliary fuel supply pipe 21. As mentioned above, The auxiliary fuel supply pipe 21 is provided with an auxiliary fuel adjustment valve 21a, and the auxiliary fuel adjustment valve 21a is controlled by the aforementioned control device 30 to adjust the amount of hydrocarbon-based fuel CmHn supplied to the injection device 20, as described above. The hydrocarbon fuel CmHn of the injection device 20 is injected toward the flame burned by the burner 10 to cause combustion.

在此,在該實施型態之氨燃料燃燒裝置中,如前所述,藉由控制裝置30控制設置於前述空氣供給管12之空氣調整閥12a,以調整供給至燃燒器10之燃燒用空氣Air的量,並且控制設置於氨供給管11之氨調整閥11a,以調整供給至燃燒器10之氨氣NH3的量,使前述氨氣NH3與前述燃燒用空氣Air在燃燒器10中混合而在爐1內使之燃燒,並且如前所述,藉由前述控制裝置30控制設置於輔助燃料供給管21之輔助燃料調整閥21a,以調整供給至噴射裝置20之烴系燃料CmHn的量,並且使供給至該噴射裝置20之烴系燃料CmHn朝藉由前述燃燒器10所燃燒之火焰噴射並使之燃燒。 Here, in the ammonia fuel combustion device of this embodiment, as mentioned above, the air adjustment valve 12a provided in the air supply pipe 12 is controlled by the control device 30 to adjust the combustion air supplied to the burner 10 Air, and control the ammonia adjustment valve 11a provided in the ammonia supply pipe 11 to adjust the amount of ammonia gas NH 3 supplied to the burner 10, so that the ammonia gas NH 3 and the combustion air Air are in the burner 10 The mixture is mixed and burned in the furnace 1, and as described above, the auxiliary fuel adjustment valve 21a provided in the auxiliary fuel supply pipe 21 is controlled by the control device 30 to adjust the hydrocarbon fuel CmHn supplied to the injection device 20. The amount of the hydrocarbon fuel CmHn supplied to the injection device 20 is injected toward the flame burned by the burner 10 to cause combustion.

如此一來,燃燒性低之氨氣NH3係藉由從噴射裝置20朝燃燒器10中之火焰噴射之烴系燃料CmHn輔助燃燒,從而充分地燃燒,並且與僅使烴系燃料CmHn燃燒之情形相比較,會抑制二氧化碳CO2之產生。 In this way, the ammonia gas NH 3 with low combustibility is assisted by the hydrocarbon-based fuel CmHn injected from the injection device 20 toward the flame in the burner 10 to be fully burned, and is different from the combustion of only the hydrocarbon-based fuel CmHn. Compared with the situation, the production of carbon dioxide CO2 will be inhibited.

並且,如前所述,當藉由控制裝置30來控制前述空氣調整閥12a,以調整供給至燃燒器10之燃燒用空氣Air的量,並且控制前述氨調整閥11a,以 調整供給至燃燒器10之氨氣NH3的量,而且控制前述輔助燃料調整閥21a,以調整從噴射裝置20朝燃燒器10所產生之火焰噴射之烴系燃料CmHn的量時,控制由前述氨氣NH3及烴系燃料CmHn所進行之燃燒,而可容易地獲得所希望之發熱量。 Furthermore, as mentioned above, when the control device 30 controls the air adjustment valve 12a to adjust the amount of combustion air Air supplied to the burner 10, and controls the ammonia adjustment valve 11a to adjust the amount of combustion air supplied to the burner, When the amount of ammonia gas NH 3 is 10, and the aforementioned auxiliary fuel adjustment valve 21a is controlled to adjust the amount of hydrocarbon fuel CmHn injected from the injection device 20 toward the flame generated by the burner 10, the amount of the aforementioned ammonia gas NH 3 and The desired calorific value can be easily obtained by burning the hydrocarbon fuel CmHn.

再者,藉由前述控制裝置30,亦可簡單地進行使供給至燃燒器10之氨氣NH3的量、與從噴射裝置20朝燃燒器10所產生之火焰噴射之烴系燃料CmHn的量之比例變更,以獲得所希望之發熱量,例如,能夠以下列方式進行調整:當爐1內之溫度上升且氨氣NH3變得容易燃燒時,藉由前述控制裝置30來控制氨調整閥11a,以使供給至燃燒器10之氨氣NH3的量增加,另一方面,控制輔助燃料調整閥21a,以使從噴射裝置20朝燃燒器10所產生之火焰噴射之烴系燃料CmHn的量減少。 Furthermore, the control device 30 can also easily control the amount of the ammonia gas NH 3 supplied to the burner 10 and the amount of the hydrocarbon fuel CmHn injected from the injection device 20 toward the flame generated by the burner 10 . To obtain the desired calorific value, the ratio can be changed, for example, it can be adjusted in the following manner: when the temperature in the furnace 1 rises and the ammonia gas NH 3 becomes easy to burn, the ammonia adjustment valve is controlled by the aforementioned control device 30 11a to increase the amount of ammonia gas NH3 supplied to the burner 10, and on the other hand, the auxiliary fuel adjustment valve 21a is controlled so that the hydrocarbon fuel CmHn is injected from the injection device 20 toward the flame generated by the burner 10. amount decreases.

此外,在該實施型態之氨燃料燃燒裝置中,雖使用氨氣NH3作為氨燃料,惟如圖2所示,亦可使用液體氨liq.NH3作為氨燃料。 In addition, in the ammonia fuel combustion device of this embodiment, ammonia gas NH 3 is used as the ammonia fuel, but as shown in FIG. 2 , liquid ammonia liq.NH 3 can also be used as the ammonia fuel.

並且,如前所述,當使用液體氨liq.NH3作為氨燃料時,如圖2所示,藉由控制裝置30來控制氨調整閥11a,並經由氨供給管11將適量之液體氨liq.NH3供給至燃燒器10,藉由噴霧噴嘴11b使如上述方式供給之液體氨liq.NH3噴霧至燃燒器10內,並且使如上述方式噴霧之液體氨liq.NH3與如前所述經由空氣供給管12而供給至燃燒器10之燃燒用空氣Air混合,而在爐1內使之燃燒。 And, as mentioned above, when using liquid ammonia liq.NH 3 as ammonia fuel, as shown in FIG. 2 , the ammonia regulating valve 11a is controlled by the control device 30, and an appropriate amount of liquid ammonia liq is supplied through the ammonia supply pipe 11. .NH 3 is supplied to the burner 10, and the liquid ammonia liq.NH 3 supplied as above is sprayed into the burner 10 through the spray nozzle 11b, and the liquid ammonia liq.NH 3 sprayed as above is mixed with the above-mentioned method. The combustion air Air supplied to the burner 10 via the air supply pipe 12 is mixed and burned in the furnace 1 .

在此,如前所述,在使用液體氨liq.NH3作為氨燃料,且以液體氨liq.NH3之狀態供給至燃燒器10時,無須使供給至燃燒器10之氨燃料氣體化, 會減少使氨燃料氣體化之設備成本,並且與以氣體之狀態將氨燃料導引至燃燒器10之情形相比較,氨供給管11之配管等會變得簡單,而可使設備小型化。 Here, as mentioned above, when liquid ammonia liq.NH 3 is used as the ammonia fuel and is supplied to the burner 10 in the state of liquid ammonia liq.NH 3 , it is not necessary to gasify the ammonia fuel supplied to the burner 10. This reduces the equipment cost for gasifying ammonia fuel, and compared with the case where the ammonia fuel is introduced to the burner 10 in a gaseous state, the piping of the ammonia supply pipe 11 and the like can be simplified, and the equipment can be downsized.

1:爐 1: furnace

10:燃燒器 10:Burner

11:氨供給管 11: Ammonia supply pipe

11a:氨調整閥 11a: Ammonia adjustment valve

12:空氣供給管 12:Air supply pipe

12a:空氣調整閥 12a:Air adjustment valve

20:噴射裝置 20:Injection device

21:輔助燃料供給管 21: Auxiliary fuel supply pipe

21a:輔助燃料調整閥 21a: Auxiliary fuel adjustment valve

30:控制裝置 30:Control device

Air:燃燒用空氣 Air: air for combustion

CmHn:烴系燃料 CmHn: hydrocarbon fuel

NH3:氨氣 NH 3 : Ammonia gas

Claims (3)

一種氨燃料燃燒裝置,係在燃燒器內使經由氨供給管而供給之氨燃料與經由空氣供給管而供給之燃燒用空氣混合,而在爐內使之燃燒者,其中,在前述燃燒器之附近設置有經由輔助燃料供給管而被供給烴系燃料之噴射裝置,藉由前述噴射裝置,使烴系燃料朝前述燃燒器所產生之火焰噴射至爐內並使之燃燒。 An ammonia fuel combustion device that mixes ammonia fuel supplied via an ammonia supply pipe with combustion air supplied via an air supply pipe in a burner and combusts them in a furnace, wherein between the above-mentioned burners An injection device for supplying hydrocarbon fuel via an auxiliary fuel supply pipe is provided nearby. The injection device injects the hydrocarbon fuel into the furnace toward the flame generated by the burner and burns it. 如請求項1所述之氨燃料燃燒裝置,其中,係設置有:氨調整閥,係用以調整經由前述氨供給管而供給至燃燒器之氨燃料的量;空氣調整閥,係用以調整經由前述空氣供給管而供給至燃燒器之燃燒用空氣的量;輔助燃料調整閥,係用以調整經由前述輔助燃料供給管而供給至噴射裝置之烴系燃料的量;以及控制裝置,係控制前述氨調整閥、前述空氣調整閥及前述輔助燃料調整閥。 The ammonia fuel combustion device according to claim 1, wherein: an ammonia adjustment valve is provided for adjusting the amount of ammonia fuel supplied to the burner through the ammonia supply pipe; and an air adjustment valve is used for adjusting an amount of combustion air supplied to the burner via the air supply pipe; an auxiliary fuel adjustment valve for adjusting the amount of hydrocarbon fuel supplied to the injection device via the auxiliary fuel supply pipe; and a control device for controlling The aforementioned ammonia regulating valve, the aforementioned air regulating valve and the aforementioned auxiliary fuel regulating valve. 如請求項1或2所述之氨燃料燃燒裝置,其中,使用液體氨作為前述氨燃料,且使液體氨經由前述氨供給管而呈霧狀地供給至前述燃燒器。 The ammonia fuel combustion device according to claim 1 or 2, wherein liquid ammonia is used as the ammonia fuel, and the liquid ammonia is supplied to the burner in a mist form through the ammonia supply pipe.
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