JP2018184631A - Hydrogen production method and produced hydrogen supplying apparatus - Google Patents

Hydrogen production method and produced hydrogen supplying apparatus Download PDF

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JP2018184631A
JP2018184631A JP2017086258A JP2017086258A JP2018184631A JP 2018184631 A JP2018184631 A JP 2018184631A JP 2017086258 A JP2017086258 A JP 2017086258A JP 2017086258 A JP2017086258 A JP 2017086258A JP 2018184631 A JP2018184631 A JP 2018184631A
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steam
hydrogen
combustion
generated
boiler
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石原 達己
Tatsuki Ishihara
達己 石原
哲 山佳
Satoru Yamayoshi
哲 山佳
重憲 小出
Shigenori Koide
重憲 小出
淳一 小関
Junichi Koseki
淳一 小関
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TOKUSHU GIKEN KINZOKU KK
Kyushu University NUC
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TOKUSHU GIKEN KINZOKU KK
Kyushu University NUC
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/36Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/133Renewable energy sources, e.g. sunlight
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/20Waste processing or separation

Abstract

PROBLEM TO BE SOLVED: To provide a hydrogen production method in which, saving the consumption of fossil fuel such as petroleum, heat energy derived from waste utilization that leads to the reduction of carbon dioxide being a possible cause of global warming, or heat energy produced in biomass power generation is used as a heat source for obtaining steam to be supplied to a steam electrolysis device.SOLUTION: Heat produced by combustion of waste or heat produced by combustion in biomass power generation is introduced into a boiler. After the steam produced in the boiler is heated up through a steam heating device and the temperature of the steam is adjusted, the steam is introduced to a steam electrolysis device to be electrolyzed, and then the produced hydrogen is taken out.SELECTED DRAWING: Figure 1

Description

本発明は、例えば水素自動車や燃料電池自動車の燃料、家庭用燃料電池の燃料などとなる水素を製造する方法および装置、ならびに上記の燃料など各種用途に水素を供給するための水素製造供給装置に関する。 The present invention relates to a method and apparatus for producing hydrogen , for example, as fuel for hydrogen vehicles and fuel cell vehicles, fuel for household fuel cells, and the like, and a hydrogen production and supply device for supplying hydrogen to various uses such as the above fuel. .

例えば燃料電池自動車の普及に向け、水素を効率よく製造する方法として、水蒸気電解法が知られている。この方法は、例えば、700〜900℃の高温の水蒸気を電気分解することにより低い電解電圧で水素を製造するというもので、水蒸気電解セルは、固体酸化物電解質材料の両側に水素極と酸素極を設け、一例として、固体酸化物電解質材料として酸化物イオン導電性を有するイットリア安定化ジルコニア、水素極としてニッケル、酸素極としてランタン・ストロンチウム・マンガン系複合酸化物が用いられている。 For example , a steam electrolysis method is known as a method for efficiently producing hydrogen for the spread of fuel cell vehicles. In this method, for example, hydrogen is produced at a low electrolysis voltage by electrolyzing high-temperature water vapor at 700 to 900 ° C., and the water vapor electrolysis cell has a hydrogen electrode and an oxygen electrode on both sides of the solid oxide electrolyte material. As an example, yttria-stabilized zirconia having oxide ion conductivity as a solid oxide electrolyte material, nickel as a hydrogen electrode, and lanthanum / strontium / manganese composite oxide as an oxygen electrode are used.

また、中温域の水蒸気を電解して水素を製造する方法も開発されており、例えば、電解質としてイオン伝導性が高いプロトン伝導性酸化物を用い、水蒸気電解装置全体に負荷がかからない600℃以下の中温度域で電解を行う中温水蒸気電解により水素を製造する方法が提案されている。 In addition, a method for producing hydrogen by electrolyzing water vapor in the middle temperature range has been developed. For example, a proton conductive oxide having high ion conductivity is used as an electrolyte, and the load is not applied to the entire water vapor electrolysis apparatus. There has been proposed a method for producing hydrogen by medium temperature steam electrolysis in which electrolysis is performed in an intermediate temperature range.

水蒸気電解装置には、温度を調整した水蒸気を供給して電解を行わなければならず、水蒸気を得るための熱源が必要となる。例えば、燃料電池自動車の燃料となる水素を効率よく大量に製造するためのシステムをつくるためには、環境問題において大きな課題となっている地球温暖化対策として二酸化炭素の削減にも配慮しなければならない。 The steam electrolyzer must be electrolyzed by supplying steam whose temperature is adjusted, and a heat source for obtaining steam is required. For example, in order to create a system for efficiently producing a large amount of hydrogen as fuel for fuel cell vehicles, we must consider reducing carbon dioxide as a measure against global warming, which is a major issue in environmental issues. Don't be.

特開平7−34277号公報JP 7-34277 A 特開2009−19236号公報JP 2009-19236 A

本発明は、石油など化石燃料の消費を節約し、地球温暖化の原因である二酸化炭素の削減にもつながる廃棄物利用による熱エネルギーやバイオマス発電に伴う熱エネルギーを水蒸気電解装置に供給する水蒸気を得るための熱源としようとするものであり、その目的は、廃棄物の燃焼により生じる熱またはバイオマス発電における燃焼により生じる熱を水蒸気電解装置に供給する水蒸気を得るための熱源として用いた水素製造方法および装置、ならびに水素製造供給装置を提供することにある。 The present invention saves the consumption of petroleum fossil fuels, the steam provides heat energy due to thermal energy and biomass power generation by the waste utilization leads to reduction of carbon dioxide is a cause of global warming steam electrolysis apparatus A method for producing hydrogen using heat as a heat source for obtaining steam that supplies heat generated by combustion of waste or heat generated by combustion in biomass power generation to a steam electrolysis apparatus. And an apparatus, and a hydrogen production and supply apparatus .

上記の目的を達成するための請求項1による水素製造方法は、廃棄物の燃焼により生じる熱またはバイオマス発電における燃焼により生じる熱をボイラーに導入し、ボイラーで生成された水蒸気を水蒸気加熱装置に通して水蒸気を加熱し水蒸気の温度を調整したのち、水蒸気電解装置に導入して水蒸気を電気分解し、生成された水素を取り出すことを特徴とする。 In order to achieve the above object, a hydrogen production method according to claim 1 introduces heat generated by combustion of waste or heat generated by combustion in biomass power generation into a boiler, and passes steam generated by the boiler through a steam heating device. Then, after the water vapor is heated and the temperature of the water vapor is adjusted, the water vapor is introduced into a water vapor electrolysis apparatus to electrolyze the water vapor, and the generated hydrogen is taken out .

請求項2による水素製造方法は、請求項1において、前記水蒸気電解装置として中温水蒸気電解装置を使用することを特徴とする。 The hydrogen production method according to claim 2 is characterized in that, in claim 1, a medium temperature steam electrolyzer is used as the steam electrolyzer.

請求項3による水素製造方法は、請求項1または2において、前記水蒸気電解装置に水蒸気を導入して水蒸気を電気分解し、生成された水素を取り出すとともに、水素と共に生成される酸素を前記廃棄物の燃焼またはバイオマス発電における燃焼に使用することを特徴とする。 According to a third aspect of the present invention, there is provided a method for producing hydrogen according to the first or second aspect, wherein steam is introduced into the steam electrolyzer to electrolyze the steam, and the generated hydrogen is taken out, and oxygen generated together with hydrogen is removed from the waste It is characterized by being used for combustion of biomass or combustion in biomass power generation .

請求項4による水素製造装置は、廃棄物の燃焼装置またはバイオマス発電における燃焼装置と、該燃焼装置からの熱を導入するボイラーと、ボイラーで生成された水蒸気を加熱し水蒸気の温度を調整する水蒸気加熱装置と、水蒸気加熱装置で温度を調整した水蒸気を導入して水蒸気を電気分解する水蒸気電解装置と、電気分解により生成された水素を取り出す装置をそなえてなることを特徴とする。 A hydrogen production apparatus according to claim 4 is a waste combustion apparatus or a combustion apparatus in biomass power generation, a boiler that introduces heat from the combustion apparatus, and steam that heats steam generated by the boiler and adjusts the temperature of the steam A heating device, a steam electrolysis device for electrolyzing water vapor by introducing steam whose temperature is adjusted by the steam heating device, and a device for taking out hydrogen generated by electrolysis are provided.

請求項5による水素製造供給装置は、廃棄物の燃焼装置またはバイオマス発電における燃焼装置と、該燃焼装置からの熱を導入するボイラーと、ボイラーで生成された水蒸気を加熱し水蒸気の温度を調整する水蒸気加熱装置と、水蒸気加熱装置で温度を調整した水蒸気を導入して水蒸気を電気分解し水素および酸素を生成させる水蒸気電解装置と、生成された水素を貯蔵する水素タンクと、水素タンクに貯蔵された水素を各種用途に供給するための水素供給装置と、水蒸気電解装置で水素と共に生成される酸素を前記燃焼装置に導入する酸素供給装置をそなえてなることを特徴とするA hydrogen production and supply apparatus according to claim 5 is a waste combustion apparatus or a combustion apparatus in biomass power generation, a boiler that introduces heat from the combustion apparatus, and water vapor generated by the boiler is heated to adjust the temperature of the water vapor. A steam heater, a steam electrolyzer that introduces steam whose temperature is adjusted by the steam heater and electrolyzes the steam to generate hydrogen and oxygen, a hydrogen tank that stores the generated hydrogen, and a hydrogen tank that is stored in the hydrogen tank And a hydrogen supply device for supplying hydrogen to various uses, and an oxygen supply device for introducing oxygen generated together with hydrogen in the steam electrolysis device into the combustion device .

本発明は、廃棄物利用による熱エネルギーやバイオマス発電に伴う熱エネルギーを使用して水蒸気を生成し、得られた水蒸気を水蒸気電解装置に供給して水蒸気を電気分解して水素を得ようとするものであるため、石油など化石燃料の消費を節約し、地球温暖化の原因である二酸化炭素の削減につながり、また、連続的に安定してエネルギー源が得られるなどの利点がある。 This invention produces | generates water vapor | steam using the heat energy by utilization of waste, or the heat energy accompanying biomass power generation , supplies the obtained water vapor | steam to a water vapor electrolysis apparatus, and tries to obtain hydrogen by electrolyzing water vapor | steam Therefore, there are advantages such as saving consumption of fossil fuels such as oil, reducing carbon dioxide, which causes global warming, and obtaining a stable energy source continuously.

本発明の構成の概略を示すフローチャートである。It is a flowchart which shows the outline of a structure of this invention. 本発明の構成の概略を示す水素製造装置稼働後のフローチャートである。It is a flowchart after the hydrogen production apparatus operation which shows the outline of the structure of this invention.

本発明による水素製造方法は、図1〜2のフローチャートに示すように、廃棄物の燃焼により生じる熱(廃熱)またはバイオマス発電における燃焼により生じる熱をボイラーに導入し、ボイラーで生成された水蒸気を水蒸気加熱装置に通して水蒸気を加熱し水蒸気の温度を調整したのち、水蒸気電解装置に導入して水蒸気を電気分解して水素と酸素を生成させ、生成された水素を取り出すことを特徴とするものであり、その装置構成は、廃棄物燃焼炉などの廃棄物の燃焼装置またはバイオマス発電における燃焼装置と、該燃焼装置からの熱を導入するボイラーと、ボイラーで生成された水蒸気を加熱し水蒸気の温度を調整する水蒸気加熱装置と、水蒸気加熱装置で温度を調整した水蒸気を導入して水蒸気を電気分解する水蒸気電解装置と、電気分解により生成された水素を取り出す装置をそなえてなる。 As shown in the flowcharts of FIGS. 1 and 2, the hydrogen production method according to the present invention introduces heat generated by combustion of waste (waste heat) or heat generated by combustion in biomass power generation into a boiler, and steam generated by the boiler. The steam is heated through a steam heating device to adjust the temperature of the steam, and then introduced into the steam electrolysis device to electrolyze the steam to generate hydrogen and oxygen, and the generated hydrogen is taken out. The apparatus configuration includes a waste combustion apparatus such as a waste combustion furnace or a combustion apparatus in biomass power generation, a boiler for introducing heat from the combustion apparatus, and steam generated by the boiler by heating the steam. a steam heater for adjusting the temperature, the electrolysis of water vapor electrolysis apparatus water vapor by introducing steam to adjust the temperature in the steam heater, electric It becomes provided with a device for taking out the hydrogen produced by the decomposition.

廃棄物の燃焼装置とは、生ごみなどの可燃性ごみを燃焼させる生ごみ焼却炉などの廃棄物燃焼炉などであり、バイオマス発電における燃焼装置とは、木くずや間伐材、可燃性ごみのバイオマス燃料を直接燃焼して蒸気タービンを回す直接発電方式、燃料を熱処理することでガス化しガスタービンを回す熱分解ガス化方式や、家畜の糞尿や生ごみ、下水汚泥などを発酵させて生じるメタンガスなどのバイオガスを燃焼させガスタービンを回す生物化学的ガス化方式によるバイオマス発電における燃焼装置である Waste combustion equipment is a waste combustion furnace such as a garbage incinerator that burns combustible waste such as garbage. Biomass power generation equipment is wood biomass, thinned wood, combustible waste biomass, etc. Direct power generation method that directly burns fuel and turns the steam turbine, pyrolysis gasification method that turns the gas turbine by gasifying the fuel by heat treatment, methane gas produced by fermenting livestock manure, garbage, sewage sludge, etc. It is a combustion device in biomass power generation by the biochemical gasification system that burns the biogas and turns the gas turbine .

廃棄物の燃焼装置またはバイオマス発電における燃焼装置からの熱は、直接ボイラーに導入してもよく、いったん蓄熱装置に蓄えたのちに利用することもできる。例えば、燃焼炉の煙道に水管を設けて排熱でボイラーへの給水を加熱してボイラーの効率を高めることもできる。なお、本発明においては、廃棄物の燃焼装置からの熱とバイオマス発電における燃焼装置からの熱を併用して使用してもよい。 The heat from the waste combustion device or the combustion device in biomass power generation may be introduced directly into the boiler, or may be used after being stored in the heat storage device. For example, the efficiency of the boiler can be increased by providing a water pipe in the flue of the combustion furnace and heating the feed water to the boiler with exhaust heat. In the present invention, the heat from the waste combustion apparatus and the heat from the combustion apparatus in biomass power generation may be used in combination.

ボイラーで生成された水蒸気は水蒸気加熱装置に導入され、水蒸気の温度調整が行われる。水蒸気加熱装置としては、電熱蒸気加熱装置、高周波蒸気加熱装置、誘導加熱による加熱装置など公知の装置が適用される。 The steam generated by the boiler is introduced into a steam heating device, and the temperature of the steam is adjusted. As the steam heating device, a known device such as an electrothermal steam heating device, a high-frequency steam heating device, or a heating device by induction heating is applied.

水蒸気加熱装置で温度を調整した水蒸気は水蒸気電解装置に導入される。水蒸気電解装置においては水蒸気が電気分解され水素と酸素が生成され、各種用途に供するため水素が取り出される。水蒸気電気装置としては、700〜900℃の高温の水蒸気を電気分解する高温水蒸気電解装置と、600℃以下の中温度域の水蒸気を電気分解する中温水蒸気電解装置が適用されるが、全体に負荷がかからないで電解を行うことができるという点で中温水蒸気電解を適用するのが望ましい。 The steam whose temperature is adjusted by the steam heater is introduced into the steam electrolyzer. In the steam electrolysis apparatus, steam is electrolyzed to generate hydrogen and oxygen, and hydrogen is taken out for use in various applications. As the steam electric device, a high temperature steam electrolyzer that electrolyzes high temperature steam at 700 to 900 ° C. and a medium temperature steam electrolyzer that electrolyzes water vapor in a middle temperature range of 600 ° C. or less are applied, but the entire load It is desirable to apply medium-temperature steam electrolysis in that electrolysis can be performed without being applied.

高温水蒸気電解装置は、導電性の固体酸化物電解質の片側に水素極をそなえ他側に酸素極をそなえた水蒸気電解セルを構成し、水素極(陰極、カソード)に直流電源の負極を接続し、酸素極(陽極、アノード)に直流電源の正極を接続して、両極間に所要の直流電圧を印加し、水素極(陰極)側に高温の水蒸気を供給して電気分解を行う。水素極で水素発生反応が生じて水素が発生し、酸素極で酸素が発生する。この場合、水素極および酸素極の電極構造を多孔構造に形成すると、両極における水蒸気や水素、酸素の拡散が容易となって反応が促進され、水素生成効率を向上させることができる。 The high-temperature steam electrolyzer consists of a steam electrolysis cell with a hydrogen electrode on one side of a conductive solid oxide electrolyte and an oxygen electrode on the other side, and the negative electrode of the DC power supply is connected to the hydrogen electrode (cathode, cathode). Then, a positive electrode of a DC power source is connected to the oxygen electrode (anode, anode), a required DC voltage is applied between both electrodes, and high-temperature steam is supplied to the hydrogen electrode (cathode) side to perform electrolysis. Hydrogen generation reaction occurs at the hydrogen electrode to generate hydrogen, and oxygen is generated at the oxygen electrode. In this case, if the electrode structure of the hydrogen electrode and the oxygen electrode is formed in a porous structure, the diffusion of water vapor, hydrogen, and oxygen at both electrodes is facilitated, the reaction is promoted, and the hydrogen generation efficiency can be improved.

中温水蒸気電解装置は、例えば特許第6042385号公報の図5に示されるように、絶縁体から形成されたハウジング内に、電解質の一方側に多孔質のカソードを設け、反対側に多孔質のアノードを設けたセラミックパイプからなる複数本の電解セルを構成し、中温水蒸気をカソード側に連続的に供給しながら、カソードとアノード間に電圧を印加して電気分解を行うことにより中温水蒸気を分解して水素と酸素を生成する。 For example, as shown in FIG. 5 of Japanese Patent No. 6042385, the intermediate temperature steam electrolyzer is provided with a porous cathode on one side of an electrolyte and a porous anode on the opposite side in a housing formed of an insulator. A plurality of electrolytic cells consisting of ceramic pipes provided with a medium temperature water vapor is decomposed by applying a voltage between the cathode and the anode while continuously supplying the medium temperature water vapor to the cathode side and performing electrolysis. To produce hydrogen and oxygen.

水蒸気の電気分解を行うために水蒸気電解装置に供給する電力は、商用電源から供給することもでき、太陽光発電、風力発電、バイオマス発電など再生可能エネルギーを利用する発電から得られた電力を用いることもできる(図1〜2参照)。 The power supplied to the steam electrolyzer for electrolysis of steam can also be supplied from a commercial power source, and uses the power obtained from power generation using renewable energy such as solar power generation, wind power generation, biomass power generation, etc. (See FIGS. 1-2).

水蒸気電解装置での電気分解により水素と共に生成される高純度の酸素は、酸素ガス冷却装置、酸素タンクなどを含む酸素供給装置を介して廃棄物の燃焼またはバイオマス発電における燃焼に使用され、廃棄物やバイオマス燃料の燃焼促進のために供されることができる(図2)。 High-purity oxygen produced together with hydrogen by electrolysis in a steam electrolyzer is used for combustion of waste or combustion in biomass power generation through an oxygen supply device including an oxygen gas cooling device, an oxygen tank, etc. And can be used to promote combustion of biomass fuel (FIG. 2).

水蒸気電解装置での電気分解により生成された水素は水素タンクに貯蔵され、水素供給装置を介して水素自動車や燃料電池自動車の燃料として供給される。具体的には、水蒸気電解装置における電気分解により生成された水素は、水素ガス分離装置を通して水分を除去して高純度の水素としたのち、水素タンクに貯蔵し、増圧装置を介して水素燃料供給装置によりスタンド形式で水素を燃料とする水素自動車および燃料電池自動車に供給することができる。Hydrogen generated by electrolysis in the steam electrolyzer is stored in a hydrogen tank and supplied as fuel for a hydrogen vehicle or a fuel cell vehicle via a hydrogen supply device. Specifically, hydrogen produced by electrolysis in a steam electrolyzer is removed through a hydrogen gas separator to obtain high-purity hydrogen, which is then stored in a hydrogen tank and hydrogen fuel via a pressure intensifier. It can be supplied to hydrogen vehicles and fuel cell vehicles that use hydrogen as fuel in a stand form by the supply device.

また、水蒸気電解装置での電気分解により生成された水素を貯蔵した水素タンクを運搬し、水素燃料供給装置を介して家庭用燃料電池の燃料として供給することもでき、その他、例えば、半導体製造時の材料ガス、金属に優れた特性を与えるための熱処理炉での使用、樹脂生成における還元剤など種々の用途に供することもできる。宇宙分野においても水素燃料は注目されている It is also possible to transport a hydrogen tank that stores hydrogen produced by electrolysis in a steam electrolyzer and supply it as fuel for a household fuel cell via a hydrogen fuel supply device. It can also be used in various applications such as a material gas, use in a heat treatment furnace to give excellent properties to metals, and a reducing agent in resin production. Hydrogen fuel is also attracting attention in the space field .

本発明は、例えば水素自動車や燃料電池自動車の燃料、家庭用燃料電池の燃料などとなる水素を製造する方法および上記の燃料など各種用途に水素を供給するための水素製造供給装置に関する。 The present invention relates to a method for producing hydrogen, for example, as fuel for hydrogen vehicles and fuel cell vehicles, fuel for household fuel cells, and the like, and a hydrogen production and supply device for supplying hydrogen to various uses such as the above fuel .

本発明は、石油など化石燃料の消費を節約し、地球温暖化の原因である二酸化炭素の削減にもつながる廃棄物利用による熱エネルギーやバイオマス発電に伴う熱エネルギーを水蒸気電解装置に供給する水蒸気を得るための熱源としようとするものであり、その目的は、廃棄物の燃焼により生じる熱またはバイオマス発電における燃焼により生じる熱を水蒸気電解装置に供給する水蒸気を得るための熱源として用いた水素製造方法および水素製造供給装置を提供することにある。 The present invention saves the consumption of fossil fuels such as petroleum and reduces the carbon dioxide, which is the cause of global warming. A method for producing hydrogen using heat as a heat source for obtaining steam that supplies heat generated by combustion of waste or heat generated by combustion in biomass power generation to a steam electrolysis apparatus. And providing a hydrogen production and supply apparatus .

上記の目的を達成するための請求項1による水素製造方法は、廃棄物の燃焼により生じる熱またはバイオマス発電における燃焼により生じる熱をボイラーに導入し、ボイラーで生成された水蒸気を水蒸気加熱装置に通して水蒸気を加熱し水蒸気の温度を600℃以下に調整したのち、水蒸気電解装置に導入し、商用電源からの電力または再生可能エネルギーを利用する発電から得られる電力を供給して水蒸気を電気分解し、生成された水素を取り出すとともに、水素と共に生成される酸素を前記廃棄物の燃焼またはバイオマス発電における燃焼に使用することを特徴とする。 In order to achieve the above object, a hydrogen production method according to claim 1 introduces heat generated by combustion of waste or heat generated by combustion in biomass power generation into a boiler, and passes steam generated by the boiler through a steam heating device. The water vapor is heated to adjust the temperature of the water vapor to 600 ° C. or less, and then introduced into the water vapor electrolysis apparatus, and the water vapor is electrolyzed by supplying electric power from a commercial power source or power generation using renewable energy. The produced hydrogen is taken out , and oxygen produced together with the hydrogen is used for combustion of the waste or combustion in biomass power generation .

請求項による水素製造供給装置は、廃棄物の燃焼装置またはバイオマス発電における燃焼装置と、該燃焼装置からの熱を導入するボイラーと、ボイラーで生成された水蒸気を加熱し水蒸気の温度を調整する水蒸気加熱装置と、水蒸気加熱装置で温度を600℃以下に調整した水蒸気を導入し、商用電源からの電力または再生可能エネルギーを利用する発電から得られる電力を供給して水蒸気を電気分解し水素および酸素を生成させる水蒸気電解装置と、生成された水素を貯蔵する水素タンクと、水素タンクに貯蔵された水素を各種用途に供給するための水素供給装置と、水蒸気電解装置で水素と共に生成される酸素を前記燃焼装置に導入する酸素供給装置をそなえてなることを特徴とする。 A hydrogen production and supply apparatus according to claim 2 is a waste combustion apparatus or a combustion apparatus in biomass power generation, a boiler that introduces heat from the combustion apparatus, and steam generated by the boiler is heated to adjust the temperature of the steam. A steam heater, steam introduced at a temperature of 600 ° C. or less by the steam heater, and supplied with power from a commercial power source or power generated using renewable energy to electrolyze the steam to produce hydrogen and A steam electrolyzer for generating oxygen, a hydrogen tank for storing the generated hydrogen, a hydrogen supply device for supplying hydrogen stored in the hydrogen tank for various uses, and oxygen generated together with hydrogen in the steam electrolyzer Is provided with an oxygen supply device for introducing the gas into the combustion device.

Claims (5)

廃棄物の燃焼により生じる熱またはバイオマス発電における燃焼により生じる熱をボイラーに導入し、ボイラーで生成された水蒸気を水蒸気加熱装置に通して水蒸気を加熱し水蒸気の温度を調整したのち、水蒸気電解装置に導入して水蒸気を電気分解し、生成された水素を取り出すことを特徴とする水素製造方法。 Heat generated by combustion of waste or heat generated by combustion in biomass power generation is introduced into the boiler, and the steam generated by the boiler is passed through a steam heating device to adjust the temperature of the steam, and then the steam electrolysis device A method for producing hydrogen, comprising introducing water to electrolyze water vapor and taking out the produced hydrogen. 前記水蒸気電解装置として中温水蒸気電解装置を使用することを特徴とする請求項1記載の水素製造方法。 The method for producing hydrogen according to claim 1, wherein a medium temperature steam electrolyzer is used as the steam electrolyzer. 前記水蒸気電解装置に水蒸気を導入して水蒸気を電気分解し、生成された水素を取り出すとともに、水素と共に生成される酸素を前記廃棄物の燃焼またはバイオマス発電における燃焼に使用することを特徴とする請求項1または2に記載の水素製造方法。 The steam is electrolyzed by introducing steam into the steam electrolyzer , hydrogen generated is taken out, and oxygen generated together with hydrogen is used for combustion of the waste or combustion in biomass power generation. Item 3. The method for producing hydrogen according to Item 1 or 2. 廃棄物の燃焼装置またはバイオマス発電における燃焼装置と、該燃焼装置からの熱を導入するボイラーと、ボイラーで生成された水蒸気を加熱し水蒸気の温度を調整する水蒸気加熱装置と、水蒸気加熱装置で温度を調整した水蒸気を導入して水蒸気を電気分解する水蒸気電解装置と、電気分解により生成された水素を取り出す装置をそなえてなることを特徴とする水素製造装置。 Waste combustion apparatus or combustion apparatus in biomass power generation, a boiler for introducing heat from the combustion apparatus, a steam heating apparatus for adjusting steam temperature by heating steam generated by the boiler, and temperature by the steam heating apparatus A hydrogen production apparatus comprising: a steam electrolyzer for introducing water vapor adjusted to electrolyze water vapor; and a device for taking out hydrogen generated by electrolysis . 廃棄物の燃焼装置またはバイオマス発電における燃焼装置と、該燃焼装置からの熱を導入するボイラーと、ボイラーで生成された水蒸気を加熱し水蒸気の温度を調整する水蒸気加熱装置と、水蒸気加熱装置で温度を調整した水蒸気を導入して水蒸気を電気分解し水素および酸素を生成させる水蒸気電解装置と、生成された水素を貯蔵する水素タンクと、水素タンクに貯蔵された水素を各種用途に供給するための水素供給装置と、水蒸気電解装置で水素と共に生成される酸素を前記燃焼装置に導入する酸素供給装置をそなえてなることを特徴とする水素製造供給装置 Waste combustion apparatus or combustion apparatus in biomass power generation, a boiler for introducing heat from the combustion apparatus, a steam heating apparatus for adjusting steam temperature by heating steam generated by the boiler, and temperature by the steam heating apparatus A water vapor electrolyzer that introduces water vapor adjusted to produce hydrogen and oxygen by electrolyzing the water vapor, a hydrogen tank that stores the generated hydrogen, and for supplying hydrogen stored in the hydrogen tank to various uses A hydrogen production and supply apparatus comprising: a hydrogen supply apparatus; and an oxygen supply apparatus that introduces oxygen generated together with hydrogen in a steam electrolysis apparatus into the combustion apparatus .
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