Sawafuji Electric Co., Ltd.

Tokai National Higher Education and Research System

Gifu University

National University Corporation Tokai National Higher Education and Research System

Actree Corporation

Tatsuya Ikeda

Tomonori Miura

Shinji Kambara

Yukio Hayakawa

Yuya Tanaka

Megumi Masui

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 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

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

Gunma, Japan

Tatsuya Ikeda