WO2023037644A1 - Combustion device - Google Patents
Combustion device Download PDFInfo
- Publication number
- WO2023037644A1 WO2023037644A1 PCT/JP2022/017043 JP2022017043W WO2023037644A1 WO 2023037644 A1 WO2023037644 A1 WO 2023037644A1 JP 2022017043 W JP2022017043 W JP 2022017043W WO 2023037644 A1 WO2023037644 A1 WO 2023037644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- combustion
- ammonia
- liquid ammonia
- injection device
- combustion burner
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 109
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000000446 fuel Substances 0.000 claims abstract description 33
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 25
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 21
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 21
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 21
- 239000012159 carrier gas Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 28
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 16
- 229910002092 carbon dioxide Inorganic materials 0.000 description 14
- 239000001569 carbon dioxide Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000005431 greenhouse gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Images
Classifications
-
- 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
- F23C1/00—Combustion 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
- F23C1/08—Combustion 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J7/00—Arrangement of devices for supplying chemicals to fire
-
- 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
Definitions
- the present invention relates to a combustion apparatus having a combustion burner for mixing hydrocarbonaceous fuel with combustion air and combusting it in a furnace.
- a combustion burner for mixing hydrocarbonaceous fuel with combustion air and combusting it in a furnace.
- hydrocarbon fuel is mixed with combustion air and burned by a combustion burner, it is possible to easily suppress the generation of greenhouse gases such as carbon dioxide CO2 and nitrogen oxides NOx. It is characterized by points.
- Patent Documents 1 and 2 a hydrocarbon gas of a hydrocarbon fuel and combustion air are supplied to a combustion burner, and the hydrocarbon gas and combustion air are mixed by the combustion burner.
- a reducing gas supply mechanism is provided near the combustion burner to supply a reducing power-enriched gas or ammonia gas from which a highly reducing component is extracted, and an oxygen-containing gas is placed away from the reducing gas supply mechanism.
- An oxidizing gas supply mechanism for supplying gas is provided.
- a reducing power-enriched gas or ammonia gas is supplied from a reducing gas supply mechanism provided near the combustion burner to denitrify the combustion exhaust gas after combustion, and It is shown that the oxygen-containing gas is supplied from an oxidizing gas supply mechanism provided at a position distant from the reducing gas supply mechanism, and the residual combustion amount not burned by the combustion burner is burned.
- An object of the present invention is to solve the above problems in a combustion apparatus having a combustion burner that mixes hydrocarbon fuel with combustion air and burns it.
- the present invention produces greenhouse gases such as carbon dioxide CO2 and nitrogen oxides NOx when a hydrocarbon fuel is mixed with combustion air and burned by a combustion burner.
- the problem is to suppress the occurrence of this without incurring high equipment costs.
- the combustion apparatus has a combustion burner that mixes a hydrocarbon fuel with combustion air and combusts it in a furnace. is provided in the vicinity of the combustion burner, and the liquid ammonia is injected into the furnace toward the flame of the combustion burner by the injection device for combustion.
- an injection device for supplying liquid ammonia through an ammonia supply pipe is provided near a combustion burner that mixes a hydrocarbon fuel with combustion air and burns it in the furnace,
- this injection device is used to inject liquid ammonia into the furnace toward the flame of the combustion burner and burn it, carbon dioxide CO 2 is not generated by the combustion of ammonia, and the calorific value is low, so nitrogen
- the generation of NOx oxides is also suppressed, and since liquid ammonia is supplied to the injection device through the ammonia supply pipe, there is no need for equipment for gasifying the liquid ammonia, which reduces the equipment cost, and the ammonia gas is in a gaseous state.
- the equipment can be made smaller than in the case of guiding.
- the liquid ammonia can be heated and injected by the injection device.
- the injection device heats the liquid ammonia to facilitate combustion and injects it toward the flame of the combustion burner, the injected liquid ammonia is reliably burned by the flame of the combustion burner.
- the injection device when the liquid ammonia is injected into the furnace toward the flame of the combustion burner by the injection device as described above, the injection device is used to atomize the liquid ammonia.
- a nozzle portion is provided, or a carrier gas is supplied from a carrier gas supply passage to the injection device to which liquid ammonia is supplied, and the liquid ammonia is sprayed from the injection device together with the carrier gas. be able to.
- the liquid ammonia supply pipe can be insulated or cooled. In this way, the liquid ammonia can be injected (sprayed) toward the flame of the combustion burner while remaining liquid.
- an injection device to which liquid ammonia is supplied through an ammonia supply pipe is provided in the vicinity of the combustion burner that mixes the hydrocarbon fuel with the combustion air and burns it in the furnace as described above.
- the liquid ammonia supplied through the ammonia supply pipe is injected into the furnace toward the flame of the combustion burner and burned, so carbon dioxide CO 2 is generated by combustion of ammonia.
- ammonia has a low calorific value, the generation of nitrogen oxides NOx is suppressed.
- liquid ammonia is supplied to the injection device through the ammonia supply pipe, there is no need for equipment for gasifying liquid ammonia. The cost can be reduced, and the equipment can be made smaller than when ammonia gas is introduced in a gaseous state.
- FIG. 1 is a schematic explanatory diagram showing the structure of a combustion device according to one embodiment of the present invention
- FIG. FIG. 4 is a schematic explanatory diagram showing a first modification of the combustion device according to the embodiment
- FIG. 5 is a schematic explanatory diagram showing a second modification of the combustion device according to the embodiment
- FIG. 5 is a schematic explanatory diagram showing a third modified example of the combustion device according to the embodiment
- combustion air Air is supplied, and the hydrocarbon fuel CmHn and the combustion air Air are mixed in the combustion burner 10 and combusted in the furnace 1 .
- the fuel supply pipe 11 is provided with a fuel adjustment valve 11a to adjust the amount of the hydrocarbon fuel CmHn supplied to the combustion burner 10, and the air supply pipe 12 is supplied with An air control valve 12 a is provided to adjust the amount of combustion air Air supplied to the combustion burner 10 .
- an injection device 20 is provided near the combustion burner 10, and liquid ammonia liq. NH 3 is supplied, and the liquid ammonia liq.
- a heating device 22 is provided to heat the NH 3 to make it readily combustible. It should be noted that the vicinity mentioned above means liquid ammonia liq. It means the distance in which NH 3 reaches the flame of the combustion burner 10 .
- liquid ammonia liq. NH 3 is injected toward the flame burned by the combustion burner 10 and burned.
- the amount of the hydrocarbon fuel CmHn supplied to the combustion burner 10 is adjusted by the fuel adjustment valve 11a provided in the fuel supply pipe 11 as described above, and the air The amount of combustion air Air supplied to the combustion burner 10 is adjusted by an air control valve 12a provided in the supply pipe 12, and the hydrocarbon fuel CmHn and the combustion air Air supplied as described above are adjusted in the combustion burner 10. are mixed and burned in the furnace 1, and the liquid ammonia liq. NH 3 and the liquid ammonia liq. NH3 is heated to make it more combustible, and thus heated liquid ammonia liq.
- NH 3 is injected by the injection device 20 toward the flame burned by the combustion burner 10 and combusted, and the hydrocarbon fuel CmHn and the liquid ammonia liq.
- the amount of heat generated by combustion with NH 3 is controlled, and the hydrocarbon fuel CmHn to be burned and the liquid ammonia liq.
- the ratio with NH3 is controlled.
- the liquid ammonia liq. NH 3 is injected by the injector 20 towards the flame ignited by the combustion burner 10 and combusted, the heated liquid ammonia liq. NH3 is reliably burned by the flame in the combustion burner 10, and carbon dioxide CO2 is not generated by the combustion of ammonia, so the amount of carbon dioxide CO2 generated during combustion is reduced, and furthermore, the amount of ammonia is reduced. Since the amount of heat generated by combustion is low, the generation of nitrogen oxides NOx is also suppressed.
- ammonia can be replaced with liquid ammonia liq.
- the liquid ammonia liq This eliminates the need to provide equipment for gasifying NH 3 and allows the equipment to be made smaller than in the case of introducing ammonia in a gaseous state.
- liquid ammonia liq in the combustion device in this embodiment, the liquid ammonia liq.
- the method of injecting NH 3 from the injector 20 toward the flame of the combustion burner 10 is not limited to that shown in FIG. 1 above.
- NH 3 is sprayed in the form of a mist from the spray nozzle portion 23 provided in the injection device 20 toward the flame of the combustion burner 10 to form liquid ammonia liq.
- NH3 can be made combustible.
- liquid ammonia liq. A carrier gas cg such as air is supplied through a carrier gas supply passage 24 to the injector 20 to which NH 3 is supplied, and liquid ammonia liq. NH 3 can be combined with carrier gas cg and sprayed from the injector 20 described above.
- carbon dioxide CO 2 is not generated by combustion of ammonia, so the amount of carbon dioxide CO 2 generated during combustion is reduced, and heat generated by combustion of ammonia Since the amount is low, the generation of nitrogen oxides NOx is also suppressed, and ammonia is converted into liquid ammonia liq.
- the injector 20 in the form of NH 3 , the liquid ammonia liq. This eliminates the need to provide equipment for gasifying NH 3 and allows the equipment to be made smaller than in the case of introducing ammonia in a gaseous state.
- cryogenic liquid ammonia liq In order to inject (spray) the NH 3 as a liquid toward the flame burned by the combustion burner 10, as shown in FIG. It can be cooled by Alternatively, both heat insulation by the heat insulating material 25 and cooling by the cooling means may be performed.
Landscapes
- 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
Provided is a combustion device having a combustion burner 10 in which a hydrocarbon-based fuel CmHn and air for combustion are mixed and which combusts the mixed fuel and air in a furnace 1, wherein a fuel injection device 20, to which liquid ammonia liq.NH3 is supplied via an ammonia supply line 21, is provided in the vicinity of the combustion burner, and the fuel injection device injects the liquid ammonia into the furnace toward the flame of the combustion burner so that the liquid ammonia is combusted.
Description
本発明は、炭化水素系燃料を燃焼用空気と混合させて炉内で燃焼させる燃焼バーナーを有する燃焼装置に関するものである。特に、炭化水素系燃料を燃焼用空気と混合させて燃焼バーナーにより燃焼させた場合に、二酸化炭素ＣＯ２等の温室効果ガスや、窒素酸化物ＮＯｘが発生するのを簡単に抑制できるようにした点に特徴を有するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus having a combustion burner for mixing hydrocarbonaceous fuel with combustion air and combusting it in a furnace. In particular, when hydrocarbon fuel is mixed with combustion air and burned by a combustion burner, it is possible to easily suppress the generation of greenhouse gases such as carbon dioxide CO2 and nitrogen oxides NOx. It is characterized by points.
従来から、燃料に炭化水素系燃料を用い、この炭化水素系燃料を燃焼用空気と混合させて炉内で燃焼させる燃焼バーナーを有するようにした燃焼装置が広く使用されている。
Conventionally, a combustion apparatus that uses a hydrocarbon fuel as fuel and has a combustion burner that mixes this hydrocarbon fuel with combustion air and burns it in a furnace has been widely used.
ここで、このような燃焼装置においては、炭化水素系燃料を燃焼用空気と混合させて燃焼バーナーにより燃焼させた際に、二酸化炭素ＣＯ２等の温室効果ガスが発生しやすく、また燃焼が強くなって火炎温度が高くなった場合には、窒素酸化物ＮＯｘが発生しやすくなるという問題があった。
Here, in such a combustion apparatus, when the hydrocarbon fuel is mixed with the combustion air and burned by the combustion burner, greenhouse gases such as carbon dioxide CO2 are likely to be generated, and the combustion is strong. As a result, when the flame temperature rises, there is a problem that nitrogen oxides NOx are likely to be generated.
また、近年においては、特許文献１、２に示されるように、炭化水素系燃料の炭化水素ガスと燃焼用空気を燃焼バーナーに供給し、この燃焼バーナーにより炭化水素ガスと燃焼用空気を混合させて燃焼させるにあたり、燃焼バーナーの近くに還元性の強い成分を抽出した還元力富化ガス又はアンモニアガスを供給する還元ガス供給機構を設けると共に、この還元ガス供給機構よりも離れた位置に酸素含有ガスを供給する酸化ガス供給機構を設けたものが示されている。
In recent years, as shown in Patent Documents 1 and 2, a hydrocarbon gas of a hydrocarbon fuel and combustion air are supplied to a combustion burner, and the hydrocarbon gas and combustion air are mixed by the combustion burner. A reducing gas supply mechanism is provided near the combustion burner to supply a reducing power-enriched gas or ammonia gas from which a highly reducing component is extracted, and an oxygen-containing gas is placed away from the reducing gas supply mechanism. An oxidizing gas supply mechanism for supplying gas is provided.
そして、特許文献１、２に示されるものにおいては、燃焼バーナーの近くに設けた還元ガス供給機構から還元力富化ガス又はアンモニアガスを供給して、燃焼後の燃焼排ガスの脱硝を行い、また還元ガス供給機構よりも離れた位置に設けた酸化ガス供給機構から酸素含有ガスを供給して、燃焼バーナーによって燃焼されなかった残余の燃焼分を燃焼処理することが示されている。
In the devices disclosed in Patent Documents 1 and 2, a reducing power-enriched gas or ammonia gas is supplied from a reducing gas supply mechanism provided near the combustion burner to denitrify the combustion exhaust gas after combustion, and It is shown that the oxygen-containing gas is supplied from an oxidizing gas supply mechanism provided at a position distant from the reducing gas supply mechanism, and the residual combustion amount not burned by the combustion burner is burned.
ここで、前記のように還元ガス供給機構からアンモニアガスを供給する場合、アンモニア燃料をガス化させるために、特許文献３に示すようなアンモニア気化器等が必要になって設備コストが高くつくと共に、アンモニアガスをガスの状態で還元ガス供給機構に導くアンモニアガス供給管の配管が必要になって、コストが高くつくと共に設備が大型化するという問題があった。
Here, when supplying ammonia gas from the reducing gas supply mechanism as described above, an ammonia vaporizer or the like as shown in Patent Document 3 is required in order to gasify the ammonia fuel, which increases the equipment cost. In addition, there is a problem that an ammonia gas supply pipe is required to lead the ammonia gas in a gaseous state to the reducing gas supply mechanism, which increases the cost and increases the size of the equipment.
本発明は、炭化水素系燃料を燃焼用空気と混合させて燃焼させる燃焼バーナーを有する燃焼装置における前記のような問題を解決することを課題とするものである。
An object of the present invention is to solve the above problems in a combustion apparatus having a combustion burner that mixes hydrocarbon fuel with combustion air and burns it.
すなわち、本発明は、前記のような燃焼装置において、炭化水素系燃料を燃焼用空気と混合させて燃焼バーナーにより燃焼させた場合に、二酸化炭素ＣＯ２等の温室効果ガスや、窒素酸化物ＮＯｘが発生するのを高い設備コストをかけずに抑制できるようにすることを課題とするものである。
That is, in the combustion apparatus as described above, the present invention produces greenhouse gases such as carbon dioxide CO2 and nitrogen oxides NOx when a hydrocarbon fuel is mixed with combustion air and burned by a combustion burner. The problem is to suppress the occurrence of this without incurring high equipment costs.
本発明に係る燃焼装置においては、前記のような課題を解決するため、炭化水素系燃料を燃焼用空気と混合させて炉内で燃焼させる燃焼バーナーを有する燃焼装置において、アンモニア供給管を通して液体アンモニアが供給される噴射装置を前記の燃焼バーナーの近傍に設け、前記の噴射装置により、液体アンモニアを燃焼バーナーによる火炎に向けて炉内に噴射させて燃焼させるようにした。
In order to solve the above problems, the combustion apparatus according to the present invention has a combustion burner that mixes a hydrocarbon fuel with combustion air and combusts it in a furnace. is provided in the vicinity of the combustion burner, and the liquid ammonia is injected into the furnace toward the flame of the combustion burner by the injection device for combustion.
そして、本発明に係る燃焼装置のように、炭化水素系燃料を燃焼用空気と混合させて炉内で燃焼させる燃焼バーナーの近傍に、アンモニア供給管を通して液体アンモニアが供給される噴射装置を設け、この噴射装置により液体アンモニアを前記の燃焼バーナーによる火炎に向けて炉内に噴射させて燃焼させるようにすると、アンモニアの燃焼によっては二酸化炭素ＣＯ２が発生せず、また発熱量も低いため、窒素酸化物ＮＯｘの発生も抑制され、さらにアンモニア供給管により液体アンモニアを噴射装置に供給させるため、液体アンモニアをガス化させる設備が必要なくなって設備コストが低減されると共に、アンモニアガスをガスの状態で導く場合に比べて設備を小型ができる。
Then, as in the combustion device according to the present invention, an injection device for supplying liquid ammonia through an ammonia supply pipe is provided near a combustion burner that mixes a hydrocarbon fuel with combustion air and burns it in the furnace, When this injection device is used to inject liquid ammonia into the furnace toward the flame of the combustion burner and burn it, carbon dioxide CO 2 is not generated by the combustion of ammonia, and the calorific value is low, so nitrogen The generation of NOx oxides is also suppressed, and since liquid ammonia is supplied to the injection device through the ammonia supply pipe, there is no need for equipment for gasifying the liquid ammonia, which reduces the equipment cost, and the ammonia gas is in a gaseous state. The equipment can be made smaller than in the case of guiding.
ここで、本発明に係る燃焼装置においては、前記の噴射装置により、液体アンモニアを加熱させて噴射させるようにすることができる。このように、噴射装置により液体アンモニアを加熱させて燃焼しやすくして、燃焼バーナーによる火炎に向けて噴射させると、噴射された液体アンモニアが燃焼バーナーにおける火炎によって確実に燃焼されるようになる。
Here, in the combustion device according to the present invention, the liquid ammonia can be heated and injected by the injection device. In this way, when the injection device heats the liquid ammonia to facilitate combustion and injects it toward the flame of the combustion burner, the injected liquid ammonia is reliably burned by the flame of the combustion burner.
また、本発明に係る燃焼装置においては、前記のように噴射装置により、液体アンモニアを燃焼バーナーによる火炎に向けて炉内に噴射させるにあたり、噴射装置に、液体アンモニアを霧状にして噴霧させる噴霧ノズル部を設けるようにしたり、液体アンモニアが供給される前記の噴射装置に、キャリアガス供給路からキャリアガスを供給し、液体アンモニアをキャリアガスと一緒にして前記の噴射装置から噴霧させるようにすることができる。
Further, in the combustion apparatus according to the present invention, when the liquid ammonia is injected into the furnace toward the flame of the combustion burner by the injection device as described above, the injection device is used to atomize the liquid ammonia. A nozzle portion is provided, or a carrier gas is supplied from a carrier gas supply passage to the injection device to which liquid ammonia is supplied, and the liquid ammonia is sprayed from the injection device together with the carrier gas. be able to.
また、本発明に係る燃焼装置においては、前記の液体アンモニア供給管を断熱若しくは冷却させることができる。このようにすると、液体アンモニアを液体のままで、燃焼バーナーによる火炎に向けて噴射（噴霧）させることができる。
Also, in the combustion apparatus according to the present invention, the liquid ammonia supply pipe can be insulated or cooled. In this way, the liquid ammonia can be injected (sprayed) toward the flame of the combustion burner while remaining liquid.
本発明におけるアンモニア燃料燃焼装置においては、前記のように炭化水素系燃料を燃焼用空気と混合させて炉内で燃焼させる燃焼バーナーの近傍に、アンモニア供給管を通して液体アンモニアが供給される噴射装置を設け、この噴射装置により、アンモニア供給管を通して供給された液体アンモニアを前記の燃焼バーナーによる火炎に向けて炉内に噴射させて燃焼させるようにしたため、アンモニアの燃焼によっては二酸化炭素ＣＯ２が発生せず、またアンモニアは発熱量は低いため、窒素酸化物ＮＯｘが発生するのも抑制され、さらにアンモニア供給管により液体アンモニアを噴射装置に供給させるため、液体アンモニアをガス化させる設備が必要なくなり、設備コストが低減されると共に、アンモニアガスをガスの状態で導く場合に比べて設備を小型ができるようになる。
In the ammonia fuel combustion apparatus of the present invention, an injection device to which liquid ammonia is supplied through an ammonia supply pipe is provided in the vicinity of the combustion burner that mixes the hydrocarbon fuel with the combustion air and burns it in the furnace as described above. With this injection device, the liquid ammonia supplied through the ammonia supply pipe is injected into the furnace toward the flame of the combustion burner and burned, so carbon dioxide CO 2 is generated by combustion of ammonia. In addition, since ammonia has a low calorific value, the generation of nitrogen oxides NOx is suppressed. Furthermore, since liquid ammonia is supplied to the injection device through the ammonia supply pipe, there is no need for equipment for gasifying liquid ammonia. The cost can be reduced, and the equipment can be made smaller than when ammonia gas is introduced in a gaseous state.
以下、本発明の実施形態に係る燃焼装置を添付図面に基づいて具体的に説明する。なお、本発明に係るアンモニア燃料燃焼装置は、下記の実施形態に示したものに限定されず、発明の要旨を変更しない範囲において、適宜変更して実施できるものである。
A combustion device according to an embodiment of the present invention will be specifically described below with reference to the accompanying drawings. It should be noted that the ammonia fuel combustion apparatus according to the present invention is not limited to those shown in the following embodiments, and can be modified as appropriate without changing the gist of the invention.
この実施形態における燃焼装置においては、図１に示すように、炉１に設けた燃焼バーナー１０に、燃料供給管１１を通して都市ガス等の炭化水素系燃料ＣｍＨｎを供給すると共に、空気供給管１２を通して燃焼用空気Ａｉｒを供給し、炭化水素系燃料ＣｍＨｎと燃焼用空気Ａｉｒとを燃焼バーナー１０において混合させて炉１内で燃焼させるようにしている。
In the combustion apparatus of this embodiment, as shown in FIG. The combustion air Air is supplied, and the hydrocarbon fuel CmHn and the combustion air Air are mixed in the combustion burner 10 and combusted in the furnace 1 .
そして、この実施形態における燃焼装置においては、前記の燃料供給管１１に燃料調整弁１１ａを設け、燃焼バーナー１０に供給する炭化水素系燃料ＣｍＨｎの量を調整すると共に、前記の空気供給管１２に空気調整弁１２ａを設け、燃焼バーナー１０に供給する燃焼用空気Ａｉｒの量を調整するようにしている。
In the combustion apparatus of this embodiment, the fuel supply pipe 11 is provided with a fuel adjustment valve 11a to adjust the amount of the hydrocarbon fuel CmHn supplied to the combustion burner 10, and the air supply pipe 12 is supplied with An air control valve 12 a is provided to adjust the amount of combustion air Air supplied to the combustion burner 10 .
また、この実施形態における燃焼装置においては、前記の燃焼バーナー１０の近傍に噴射装置２０を設け、この噴射装置２０にアンモニア供給管２１を通して液体アンモニアｌｉｑ．ＮＨ３を供給させるようにし、前記のアンモニア供給管２１に噴射装置２０に供給する液体アンモニアｌｉｑ．ＮＨ３の量を調整するアンモニア調整弁２１ａを設けると共に、前記のアンモニア供給管２１を通して噴射装置２０に供給された液体アンモニアｌｉｑ．ＮＨ３を加熱して燃焼しやすい状態にさせる加熱装置２２を設けている。なお、前記の近傍とは、噴射装置２０から噴射（噴霧）した液体アンモニアｌｉｑ．ＮＨ３が燃焼バーナー１０の火炎に届く範囲の距離をいう。
Further, in the combustion apparatus of this embodiment, an injection device 20 is provided near the combustion burner 10, and liquid ammonia liq. NH 3 is supplied, and the liquid ammonia liq. The liquid ammonia liq. A heating device 22 is provided to heat the NH 3 to make it readily combustible. It should be noted that the vicinity mentioned above means liquid ammonia liq. It means the distance in which NH 3 reaches the flame of the combustion burner 10 .
そして、前記の噴射装置２０により、前記の加熱装置２２によって加熱された液体アンモニアｌｉｑ．ＮＨ３を、前記の燃焼バーナー１０により燃焼された火炎に向けて噴射させて燃焼させるようにしている。
Then, liquid ammonia liq. NH 3 is injected toward the flame burned by the combustion burner 10 and burned.
ここで、この実施形態における燃焼装置においては、前記のように燃料供給管１１に設けた燃料調整弁１１ａにより、燃焼バーナー１０に供給する炭化水素系燃料ＣｍＨｎの量を調整すると共に、前記の空気供給管１２に設けた空気調整弁１２ａにより燃焼バーナー１０に供給する燃焼用空気Ａｉｒの量を調整し、燃焼バーナー１０において前記のように供給された炭化水素系燃料ＣｍＨｎと燃焼用空気Ａｉｒとを混合させて炉１内において燃焼させると共に、前記のようにアンモニア供給管２１に設けたアンモニア調整弁２１ａにより前記の噴射装置２０に供給する液体アンモニアｌｉｑ．ＮＨ３の量を調整すると共に、前記の加熱装置２２により噴射装置２０に供給された液体アンモニアｌｉｑ．ＮＨ３を加熱して燃焼しやすくし、このように加熱された液体アンモニアｌｉｑ．ＮＨ３を、噴射装置２０により燃焼バーナー１０により燃焼させた火炎に向けて噴射させて燃焼させるようにし、炭化水素系燃料ＣｍＨｎと液体アンモニアｌｉｑ．ＮＨ３との燃焼による発熱量を制御すると共に、燃焼させる炭化水素系燃料ＣｍＨｎと液体アンモニアｌｉｑ．ＮＨ３との割合を制御するようにしている。
Here, in the combustion apparatus of this embodiment, the amount of the hydrocarbon fuel CmHn supplied to the combustion burner 10 is adjusted by the fuel adjustment valve 11a provided in the fuel supply pipe 11 as described above, and the air The amount of combustion air Air supplied to the combustion burner 10 is adjusted by an air control valve 12a provided in the supply pipe 12, and the hydrocarbon fuel CmHn and the combustion air Air supplied as described above are adjusted in the combustion burner 10. are mixed and burned in the furnace 1, and the liquid ammonia liq. NH 3 and the liquid ammonia liq. NH3 is heated to make it more combustible, and thus heated liquid ammonia liq. NH 3 is injected by the injection device 20 toward the flame burned by the combustion burner 10 and combusted, and the hydrocarbon fuel CmHn and the liquid ammonia liq. The amount of heat generated by combustion with NH 3 is controlled, and the hydrocarbon fuel CmHn to be burned and the liquid ammonia liq. The ratio with NH3 is controlled.
そして、前記のように加熱装置２２により加熱された液体アンモニアｌｉｑ．ＮＨ３を、噴射装置２０により燃焼バーナー１０により燃焼させた火炎に向けて噴射させて燃焼させるようにすると、加熱された液体アンモニアｌｉｑ．ＮＨ３が燃焼バーナー１０における火炎によって確実に燃焼されるようになると共に、アンモニアの燃焼によっては二酸化炭素ＣＯ２が発生しないため、燃焼時における二酸化炭素ＣＯ２の発生量が少なくなり、さらにアンモニアの燃焼による発熱量が低いため、窒素酸化物ＮＯｘの発生も抑制されるようになる。
Then, the liquid ammonia liq. NH 3 is injected by the injector 20 towards the flame ignited by the combustion burner 10 and combusted, the heated liquid ammonia liq. NH3 is reliably burned by the flame in the combustion burner 10, and carbon dioxide CO2 is not generated by the combustion of ammonia, so the amount of carbon dioxide CO2 generated during combustion is reduced, and furthermore, the amount of ammonia is reduced. Since the amount of heat generated by combustion is low, the generation of nitrogen oxides NOx is also suppressed.
また、前記のようにアンモニアを液体アンモニアｌｉｑ．ＮＨ３の状態で噴射装置２０に供給するため、液体アンモニアｌｉｑ．ＮＨ３をガス化させる設備を設ける必要がなくなると共に、アンモニアをガスの状態で導く場合に比べて、設備を小型ができるようになる。
Also, as described above, ammonia can be replaced with liquid ammonia liq. In order to supply the injector 20 in the form of NH 3 , the liquid ammonia liq. This eliminates the need to provide equipment for gasifying NH 3 and allows the equipment to be made smaller than in the case of introducing ammonia in a gaseous state.
なお、この実施形態における燃焼装置において、噴射装置により、液体アンモニアｌｉｑ．ＮＨ３を噴射装置２０により燃焼バーナー１０による火炎に向けて噴射させる方法は、前記の図１に示したものに限定されない。
In addition, in the combustion device in this embodiment, the liquid ammonia liq. The method of injecting NH 3 from the injector 20 toward the flame of the combustion burner 10 is not limited to that shown in FIG. 1 above.
例えば、図２に示すように、前記の噴射装置２０に噴霧ノズル部２３を設け、アンモニア供給管２１を通して噴射装置２０に供給された液体アンモニアｌｉｑ．ＮＨ３を、噴射装置２０に設けた前記の噴霧ノズル部２３から燃焼バーナー１０による火炎に向けて霧状にして噴霧させて、液体アンモニアｌｉｑ．ＮＨ３を燃焼しやすくすることができる。
For example, as shown in FIG. NH 3 is sprayed in the form of a mist from the spray nozzle portion 23 provided in the injection device 20 toward the flame of the combustion burner 10 to form liquid ammonia liq. NH3 can be made combustible.
さらに、図３に示すように、アンモニア供給管２１を通して液体アンモニアｌｉｑ．ＮＨ３が供給される前記の噴射装置２０に、キャリアガス供給路２４を通して空気等のキャリアガスｃｇを供給し、液体アンモニアｌｉｑ．ＮＨ３をキャリアガスｃｇと一緒にして前記の噴射装置２０から噴霧させるようにすることができる。
Furthermore, as shown in FIG. 3, liquid ammonia liq. A carrier gas cg such as air is supplied through a carrier gas supply passage 24 to the injector 20 to which NH 3 is supplied, and liquid ammonia liq. NH 3 can be combined with carrier gas cg and sprayed from the injector 20 described above.
そして、前記の図２や図３に示す変更例においても、アンモニアの燃焼によっては二酸化炭素ＣＯ２が発生しないため、燃焼時における二酸化炭素ＣＯ２の発生量が少なくなり、さらにアンモニアの燃焼による発熱量が低いため、窒素酸化物ＮＯｘの発生も抑制されるようになり、さらにアンモニアを液体アンモニアｌｉｑ．ＮＨ３の状態で噴射装置２０に供給するため、液体アンモニアｌｉｑ．ＮＨ３をガス化させる設備を設ける必要がなくなると共に、アンモニアをガスの状態で導く場合に比べて、設備を小型ができるようになる。
Also in the modified examples shown in FIGS. 2 and 3, carbon dioxide CO 2 is not generated by combustion of ammonia, so the amount of carbon dioxide CO 2 generated during combustion is reduced, and heat generated by combustion of ammonia Since the amount is low, the generation of nitrogen oxides NOx is also suppressed, and ammonia is converted into liquid ammonia liq. In order to supply the injector 20 in the form of NH 3 , the liquid ammonia liq. This eliminates the need to provide equipment for gasifying NH 3 and allows the equipment to be made smaller than in the case of introducing ammonia in a gaseous state.
また、低温の液体アンモニアｌｉｑ．ＮＨ３を液体のまま、燃焼バーナー１０により燃焼させた火炎に向けて噴射（噴霧）させるため、図４に示すように、アンモニア供給管２１を断熱材２５で断熱したり、冷却手段（図示せず）によって冷却させるようにすることができる。また、断熱材２５による断熱と、冷却手段による冷却との両方を行うようにしてもよい。
Also, cryogenic liquid ammonia liq. In order to inject (spray) the NH 3 as a liquid toward the flame burned by the combustion burner 10, as shown in FIG. It can be cooled by Alternatively, both heat insulation by the heat insulating material 25 and cooling by the cooling means may be performed.
１ ：炉
１０ ：燃焼バーナー
１１ ：燃料供給管
１１ａ ：燃料調整弁
１２ ：空気供給管
１２ａ ：空気調整弁
２０ ：噴射装置
２１ ：アンモニア供給管
２１ａ ：アンモニア調整弁
２２ ：加熱装置
２３ ：噴霧ノズル部
２４ ：キャリアガス供給路
２５ ：断熱材
Ａｉｒ ：燃焼用空気
ＣｍＨｎ ：炭化水素系燃料
ｌｉｑ．ＮＨ３ ：液体アンモニア
ｃｇ ：キャリアガス Reference Signs List 1: Furnace 10: Combustion burner 11:Fuel supply pipe 11a: Fuel control valve 12: Air supply pipe 12a: Air control valve 20: Injector 21: Ammonia supply pipe 21a: Ammonia control valve 22: Heating device 23: Spray nozzle 24: carrier gas supply path 25: heat insulating material Air: combustion air CmHn: hydrocarbon fuel liq. NH 3 : liquid ammonia cg: carrier gas
１０ ：燃焼バーナー
１１ ：燃料供給管
１１ａ ：燃料調整弁
１２ ：空気供給管
１２ａ ：空気調整弁
２０ ：噴射装置
２１ ：アンモニア供給管
２１ａ ：アンモニア調整弁
２２ ：加熱装置
２３ ：噴霧ノズル部
２４ ：キャリアガス供給路
２５ ：断熱材
Ａｉｒ ：燃焼用空気
ＣｍＨｎ ：炭化水素系燃料
ｌｉｑ．ＮＨ３ ：液体アンモニア
ｃｇ ：キャリアガス Reference Signs List 1: Furnace 10: Combustion burner 11:
Claims (5)
- 炭化水素系燃料を燃焼用空気と混合させて炉内で燃焼させる燃焼バーナーを有する燃焼装置において、アンモニア供給管を通して液体アンモニアが供給される噴射装置を前記の燃焼バーナーの近傍に設け、前記の噴射装置により、液体アンモニアを燃焼バーナーによる火炎に向けて炉内に噴射させて燃焼させることを特徴とする燃焼装置。 In a combustion apparatus having a combustion burner that mixes a hydrocarbon fuel with combustion air and burns it in a furnace, an injection device to which liquid ammonia is supplied through an ammonia supply pipe is provided near the combustion burner, and the injection A combustion apparatus characterized by injecting liquid ammonia into a furnace toward a flame of a combustion burner to burn it.
- 請求項１に記載の燃焼装置において、前記の噴射装置により、液体アンモニアを加熱させて噴射させることを特徴とする燃焼装置。 The combustion apparatus according to claim 1, wherein the injection device heats and injects the liquid ammonia.
- 請求項１又は請求項２に記載の燃焼装置において、前記の噴射装置に、液体アンモニアを霧状にして噴霧させる噴霧ノズル部を設けたことを特徴とする燃焼装置。 The combustion apparatus according to claim 1 or claim 2, wherein the injection device is provided with a spray nozzle section for spraying the liquid ammonia in the form of a mist.
- 請求項１又は請求項２に記載の燃焼装置において、液体アンモニアが供給される前記の噴射装置に、キャリアガス供給路からキャリアガスを供給し、液体アンモニアをキャリアガスと一緒にして前記の噴射装置から噴霧させることを特徴とする燃焼装置。 3. The combustion apparatus according to claim 1, wherein a carrier gas is supplied from a carrier gas supply passage to said injection device to which liquid ammonia is supplied, and liquid ammonia is combined with said carrier gas to said injection device. A combustion device characterized by spraying from.
- 請求項１～請求項４の何れか１項に記載の燃焼装置において、前記のアンモニア供給管を断熱若しくは冷却することを特徴とする燃焼装置。 5. The combustion apparatus according to any one of claims 1 to 4, wherein said ammonia supply pipe is thermally insulated or cooled.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280029003.0A CN117242302A (en) | 2021-09-09 | 2022-04-04 | Combustion apparatus |
| KR1020237035287A KR20240064586A (en) | 2021-09-09 | 2022-04-04 | combustion device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021146922A JP2023039684A (en) | 2021-09-09 | 2021-09-09 | Combustion device |
| JP2021-146922 | 2021-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023037644A1 true WO2023037644A1 (en) | 2023-03-16 |
Family
ID=85507463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/017043 WO2023037644A1 (en) | 2021-09-09 | 2022-04-04 | Combustion device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2023039684A (en) |
| KR (1) | KR20240064586A (en) |
| CN (1) | CN117242302A (en) |
| WO (1) | WO2023037644A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257808A (en) * | 1999-03-11 | 2000-09-22 | Babcock Hitachi Kk | Pressure vessel, pressurized fluidized bed boiler and ammonia injection device |
| JP2016098144A (en) * | 2014-11-21 | 2016-05-30 | 株式会社タクマ | Urea hydrolysis device and control method thereof |
| JP2019086189A (en) * | 2017-11-02 | 2019-06-06 | 株式会社Ihi | Combustion device and boiler |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875111A (en) | 1994-09-06 | 1996-03-19 | Osaka Gas Co Ltd | Combustion apparatus |
| JPH0875113A (en) | 1994-09-06 | 1996-03-19 | Osaka Gas Co Ltd | Alternate combustion heat-storage type combustion apparatus |
| JPWO2020115822A1 (en) | 2018-12-04 | 2021-02-15 | 中国電力株式会社 | Ammonia vaporizer |
-
2021
- 2021-09-09 JP JP2021146922A patent/JP2023039684A/en active Pending
-
2022
- 2022-04-04 WO PCT/JP2022/017043 patent/WO2023037644A1/en active Application Filing
- 2022-04-04 CN CN202280029003.0A patent/CN117242302A/en active Pending
- 2022-04-04 KR KR1020237035287A patent/KR20240064586A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000257808A (en) * | 1999-03-11 | 2000-09-22 | Babcock Hitachi Kk | Pressure vessel, pressurized fluidized bed boiler and ammonia injection device |
| JP2016098144A (en) * | 2014-11-21 | 2016-05-30 | 株式会社タクマ | Urea hydrolysis device and control method thereof |
| JP2019086189A (en) * | 2017-11-02 | 2019-06-06 | 株式会社Ihi | Combustion device and boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023039684A (en) | 2023-03-22 |
| KR20240064586A (en) | 2024-05-13 |
| CN117242302A (en) | 2023-12-15 |
| TW202311665A (en) | 2023-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5458481A (en) | Burner for combusting gas with low NOx production | |
| CA1053565A (en) | Liquid or gaseous fuel burner using primary and secondary air | |
| CN107975429B (en) | Gas turbine combustor and method of operating the same | |
| JP7076930B2 (en) | Ammonia fuel combustion device | |
| US9388745B2 (en) | Method for switching over a combustion device between a first fuel and a second fuel | |
| CA2897422A1 (en) | Low nox combustion method and apparatus | |
| US20090280442A1 (en) | Device And Method Of Combusting Solid Fuel With Oxygen | |
| WO2023037644A1 (en) | Combustion device | |
| TWI839719B (en) | Combustion device | |
| KR101171320B1 (en) | Pure oxy/genair combustion combined burner and burning system having the same | |
| US10352556B2 (en) | Method and burner for reducing nitrogen oxide emissions during the combustion of a gaseous fuel | |
| JP2002061517A (en) | Power generating plant and its operating method | |
| KR101359089B1 (en) | Oxygen enriched combustion apparatus and method of the same | |
| WO2023037643A1 (en) | Ammonia fuel combustion device | |
| KR102485943B1 (en) | Coal burner with mixed gas of water and natural gas for NOx reduction | |
| US9004910B2 (en) | Method for combustion of a low-grade fuel | |
| JP7387243B2 (en) | Ammonia fuel combustion equipment | |
| JP7210119B2 (en) | industrial furnace | |
| JP7091377B2 (en) | Oxygen enriched burner and its combustion method | |
| JP2001141207A (en) | Combustor and method for combustion | |
| KR100989955B1 (en) | Catalyst-assisted oxy-fuel combustor for low heating value fuels | |
| JP2023039682A (en) | Ammonia fuel combustion device | |
| US20110185954A1 (en) | Oxycombustion chamber | |
| JPS5926201B2 (en) | Two-fluid vaporization co-firing burner | |
| KR20230094008A (en) | Method for using mixed fuel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22866976 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202280029003.0 Country of ref document: CN |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |