Sawafuji Electric Co., Ltd.

Gifu University

Tokai National Higher Education and Research System

Actree Corporation

National University Corporation Tokai National Higher Education and Research System

Shinji Kambara

Tomonori Miura

Tatsuya Ikeda

Yukio Hayakawa

Megumi Masui

Yuya Tanaka

Nobuyuki Hishinuma

Sho Arai

Provided is a fuel-reforming device comprising: an ammonia tank (); a reformer () for reforming ammonia and generating high-concentration hydrogen gas having a hydrogen content of at least 99%; a mixing tank () for mixing ammonia and hydrogen for temporary storage; and a control means () for controlling the respective supply amounts of ammonia and high-concentration hydrogen gas that are supplied to the mixing tank (). The control means () calculates the combustion rate coefficient C of mixed gas with respect to a reference fuel on the basis of equation (1). Equation (1): S=S×C+S×(1−C). In equation (1), Sis the combustion rate of the reference fuel, Sis the combustion rate of hydrogen, Sis the combustion rate of ammonia, and C is the combustion rate coefficient of mixed gas. In addition, on the basis of equation (2), the control means () determines the volume fractions of ammonia and hydrogen that are supplied to the mixing tank. Equation (2): C=1−exp(−A×M). In equation (2), M is the volume fraction of hydrogen in mixed gas, and A and B are constants.

Fuel-reforming device and fuel-reforming method

Provided are a hydrogen recycle system and a hydrogen recycle method, whereby hydrogen can be purified to high purity at high yield from a gas, said gas being exhausted from a nitride compound production device, and recycled. The hydrogen recycle systemcomprises an exhaust gas supply pathsupplying a gas exhausted from a nitride compound production device, a hydrogen recycle meansand a hydrogen supply path. The hydrogen recycle meansof the hydrogen recycle systemis characterized by comprising: a plasma reaction vesselthat defines at least a part of a discharge space; a hydrogen separation membranethat divides the discharge spacefrom a hydrogen flow pathcommunicated with the hydrogen supply path, defines at least a part of the discharge spaceby one surface thereof and also defines at least a part of the hydrogen flow pathby the other surface thereof; an electrodethat is disposed outside the discharge space; and an adsorbentthat is filled in the discharge spaceand adsorbs the supplied exhaust gas.

Hydrogen recycle system and hydrogen recycle method

Provided are a hydrogen recycle system and a hydrogen recycle method, whereby hydrogen can be purified to high purity at high yield from a gas, said gas being exhausted from a nitride compound production device, and recycled. The hydrogen recycle system comprises an exhaust gas supply path supplying a gas exhausted from a nitride compound production device, a hydrogen recycle means and a hydrogen supply path. The hydrogen recycle means of the hydrogen recycle system is characterized by comprising: a plasma reaction vessel that defines at least a part of a discharge space; a hydrogen separation membrane that divides the discharge space from a hydrogen flow path communicated with the hydrogen supply path, defines at least a part of the discharge space by one surface thereof and also defines at least a part of the hydrogen flow path by the other surface thereof; an electrode that is disposed outside the discharge space; and an adsorbent that is filled in the discharge space and adsorbs the supplied exhaust gas.

Provided are a hydrogen purification device and a hydrogen purification method whereby hydrogen having a high purity can be purified at a high yield from a starting gas. The hydrogen purification device comprises: a starting gas source that supplies a starting gas, said starting gas containing hydrogen molecules and/or a hydride, to a discharge space; a plasma reactor that defines at least a part of the discharge space; a hydrogen flow channel that is connected to the discharge space; and leads out purified hydrogen from the starting gas source; a hydrogen separation membrane that partitions the discharge space from the hydrogen flow channel defines at least a part of the discharge space by one surface thereof and defines at least a part of the hydrogen flow channel by the other surface thereof; an electrode that is positioned outside the discharge space; and an adsorbent that is filled in the discharge space and adsorbs the starting gas. In the hydrogen purification method according to the present invention, the starting gas is adsorbed by the adsorbent in the discharge space. Hydrogen molecules, which have been desorbed from the adsorbent by discharge, are allowed to penetrate through the hydrogen separation membrane 4 and led out into the hydrogen flow channel.

Hydrogen purification device and hydrogen purification method

Provided is a hydrogen generating apparatus adaptable to fluctuating hydrogen demand, particularly by enabling large-scale hydrogen production, generating pure hydrogen at a high yield. The hydrogen generating apparatusgenerates hydrogen gas from a source gas by decomposing the source gas through catalysis and transforming it into plasma through electric discharge. The hydrogen generating apparatusincludes a dielectric bodydefining a source gas flow channel, a catalystthat decomposes at least part of the source gas in the source gas flow channelto generate hydrogen gas, an electrodecontacting the dielectric body, a hydrogen separation membranefacing the electrodeacross the dielectric body, a hydrogen flow channelguiding hydrogen separated by the hydrogen separation membrane, and a high-voltage power supplysupplying power to cause electric discharge between the hydrogen separation membraneand the electrode

Hydrogen generator

Provided is a hydrogen generating apparatus adaptable to fluctuating hydrogen demand, particularly by enabling large-scale hydrogen production, generating pure hydrogen at a high yield. The hydrogen generating apparatusincludes a tabular dielectric bodyhaving a first surfacewith a source gas flow channelformed as a recess and a second surfaceapproximately parallel to the first surface, a grounding electrode, a hydrogen flow channel platewith a hydrogen flow channeland a hydrogen outlet, being arranged on a first surfaceside of dielectric body, a hydrogen separation membranebetween source gas flow channeland hydrogen flow channel, and a high-voltage power supplythat causes electric discharge in source gas flow channelbetween hydrogen separation membraneand grounding electrode. Hydrogen separation membranetransmits hydrogen generated by electric discharge in source gas flow channelinto hydrogen flow channel

An energy carrier system is provided that produces ammonia with high efficiency and that further produces hydrogen as final product and uses the hydrogen as energy. An energy storage transportation method is further provided that is carried out by using energy carrier system. The energy carrier system includes nitric acid production device, an ammonia production device, and hydrogen production device. The nitric acid production device includes a photo-reactor, a gas supply unit that supplies photo-reactor with gas to be treated containing a nitrogen oxide, water, and oxygen, and light source disposed in the photo-reactor. The light source radiates light including ultraviolet of a wavelength shorter than 175 nm. The energy storage transportation method includes nitric acid production step of producing nitric acid from a nitrogen oxide, ammonia production step of producing ammonia through reduction of nitric acid, and hydrogen production step of producing hydrogen through decomposition of the ammonia.

Energy storage transportation method and energy carrier system

To provide a hydrogen generating apparatus that efficiently generates hydrogen from ammonia, and a fuel cell system that generates power using the efficiently generated hydrogen. [Solution] A hydrogen generating apparatus () is provided with a plasma reactor (), a high-voltage electrode (), a grounding electrode (), and a gas supply means () that supplies a gas containing ammonia to the plasma reactor. The high-voltage electrode () is configured with a hydrogen separation membrane () included therein. Under the conditions of room temperature and atmospheric pressure, the hydrogen separation membrane () of the high-voltage electrode () discharges electricity between the grounding electrode () and the hydrogen separation membrane with power supplied from a high-voltage pulse power supply (), and hydrogen is generated by bringing into the plasma state the ammonia contained in the gas thus supplied.

Hydrogen generating apparatus and fuel cell system provided with hydrogen generating apparatus

A denitration device and a denitration method in which denitration is performed efficiently and in a stable manner in a lower-reaction-temperature region without using a catalyst. The denitration device is provided with a combustion chamber, a denitration agent feed means for feeding a denitration agent into the combustion chamber, an exhaust pipe, and an OH-radical-generating substance feed means for feeding an OH radical-generating substance into the exhaust pipe. The denitration agent feed means feeds a denitration agent into the exhaust gas of the combustion chamber to perform a first denitration reaction step, and the OH-radical-generating substance feed means feeds the OH-radical-generating substance into the exhaust gas in the exhaust pipe to perform a second denitration reaction step.

Growing community of inventors

Gifu, Japan

Shinji Kambara