Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Sumitomo Seika Chemicals Co., Ltd.

Satoshi Hanai

Hideaki Sumi

Hikaru Okada

Kiyoshi Kasahara

Takahiro Tachihara

Mitsuru Ikeo

Takeshi Yamagami

Yuuji Asano

Nobuyoshi Yoshida

Hiroshi Machida

Takashi Arai

Naoyuki Abe

Jun Machida

Noriyuki Mizojiri

Mitsuru c/o Honda R&D Co Ltd Ikeo

Takeshi c/o Honda R&D Co Ltd Yamagami

Hikaru c/o Honda R&D Co Ltd Okada

Noriyuki c/o Honda R&D Co Ltd Mizojiri

Nobuyoshi c/o Honda R&D Co Ltd Yoshida

Takashi c/o Honda R&D Co Ltd Arai

A fuel modification apparatus is equipped with evaporators for evaporating a raw fuel as a fuel to be modified, a super heater for elevating the temperature of the above evaporated raw fuel to a temperature required for the modification, a modification vessel for modifying the above raw fuel having an elevated temperature to form a modified gas, and a preheater for preheating a heating fluid for evaporating the above raw fuel in the evaporator. The evaporators are arranged on a concentric circle, surrounding the superheater.

Fuel modification apparatus having an evaporator arranged around a superheater

A home fuel gas refining system has a modifier for modifying a hydrogen-containing fuel to produce a modified gas. The modifier includes a hydrogen-containing fuel supply mechanism for supplying the hydrogen-containing fuel and a modifying air supply mechanism for supplying modifying air. The hydrogen-containing fuel delivered from the hydrogen-containing fuel supply mechanism and the modifying air delivered from the modifying air supply mechanism are mixed with each other by a modification fuel ejector, and then delivered to a reactor.

Fuel gas manufacturing apparatus

A heat exchanger includes: a casing; an external cylinder which is arranged inside the casing with a clearance formed between the external cylinder and an inner surface of the casing and is supported in a cantilevered manner, has a closed end portion, and forms a first fluid passage between the external cylinder and the casing; and an internal cylinder which is arranged inside the external cylinder with a clearance formed between the internal cylinder and an inner surface of the external cylinder and is supported in a cantilevered manner, is open at both ends, and forms a second fluid passage, which is turned around at the closed end portion of the external cylinder, between the internal cylinder and the external cylinder.

Heat exchanger and evaporator

A vaporizer generates vapor by vaporizing a liquid. In particular, a vaporizer generates fuel vapor that is used for reforming fuel by vaporizing a liquid fuel that contains a hydrocarbon. This vaporizer includes a heating gas direct movement flow path along which a heating gas flows by moving directly in a horizontal direction; vaporization flow paths that are positioned such that they can exchange heat with the heating gas direct movement flow path, and that vaporizes liquid fuel; a fuel supply pipe that supplies the liquid fuel to the vaporization flow paths; and a vapor flow path that is positioned in an upstream portion on the heating gas direct movement flow path from the vaporization flow paths and that heat fuel vapor that is discharged from the vaporization flow paths. Fuel vapor that is generated on the vaporization flow paths circulates upwards in the direction of gravity along the vaporization flow paths, and subsequently is discharged from a top portion of the vaporization flow paths and is introduced into the vapor flow path. The fuel vapor then circulates in the direction of gravity along the vapor flow path.

Vaporizer that vaporizes a liquid to generate vapor

A residual gas supply means includes a residual gas passage connected to a PSA mechanism and a heater, and a branch passage having opposite ends connected to the residual gas passage and branched from the residual gas passage. The residual gas passage has an opening-adjustable valve having an adjustable opening positioned between the connected opposite ends of the branch passage. The branch passage has a check valve, a chamber for storing the residual gas, and an on-off valve.

Fuel gas manufacturing apparatus and method of operating same

A PSA mechanism has a plurality of adsorption towers having inlet/outlet ends connected to respective valves that are connected to an off-gas discharge passage. The off-gas discharge passage is connected to an off-gas ejector of a residual gas supply. The off-gas ejector has a function to draw an off gas from the PSA mechanism with compressed air that is caused by an air compressor to flow from an off-gas discharging air supply passage into an off-gas passage.

A PSA mechanism has adsorption towers. Cleaning valves and off gas valves are connected to the adsorption towers. Valve positions of at least either the cleaning valves or the off gas valves are determined based on an operation suspension period of the PSA mechanism or internal conditions which vary depending on the operation suspension period.

Fuel gas production apparatus and method of starting operation of fuel gas production apparatus

When a shutoff signal is entered to shut off a fuel gas manufacturing apparatus, it is determined whether a PSA mechanism is in a prescribed shutoff state or not. If the PSA mechanism is judged as not being in the prescribed shutoff state, the fuel gas manufacturing apparatus is continuously operated until the PSA mechanism is brought into the prescribed shutoff state. Then, if the PSA mechanism reaches the prescribed shutoff state, the fuel gas manufacturing apparatus is shut off.

Method of shutting off fuel gas manufacturing apparatus

A method of warming up a fuel evaporator is disclosed. The fuel evaporatorcomprises: an evaporation chamberequipped with a first injection devicefor injecting raw fuel liquid onto a heat sourceand vaporizing the raw fuel liquid on the heat source; a catalyst combustorhaving a combustion catalystand introducing catalytically burned combustion gas into the heat source; a second injection devicefor supplying fuel to the catalyst combustor; a combustion gas transferring deviceequipped with a fuel injection portionand a combustion catalystand the fuel injection portion injecting fuel onto the combustion catalyst to generate a catalytically burned gas; a first temperature measurement device Tfor the catalyst combustor; and a second temperature measurement device Tfor the evaporation chamber. The warm-up method comprises the steps of: transferring the combustion gas with the combustion gas transferring device; stopping the combustion gas transferring device in accordance with a temperature of the catalyst combustor, and transferring fuel to the catalyst combustor with the second injection device; and injecting the raw fuel liquid from the first injection device in accordance with a temperature of the evaporation chamber so as to vaporize the raw fuel liquid within the evaporation chamber.

Method of warming up a fuel evaporator

A raw fuel vaporizing apparatus comprising: a vaporizer for vaporizing liquid raw fuel; a raw fuel introducing device for introducing the liquid raw fuel into the vaporizer; a catalyst combustor into which fuel and air are supplied for catalytic combustion, the catalyst combustor generating heat in the presence of a catalyst and supplying the resulting heat to the vaporizer to vaporize the liquid raw fuel; a fuel introducing device for introducing the fuel into the catalyst combustor; an air introducing device for introducing the amount of the air suitable for catalytic combustion into the catalyst combustor; a heat transferring gas introducing device introducing heat transferring gas into the catalyst combustor to transfer heat retained by the catalyst combustor to the vaporizer; and a controller increasing the amount of the heat transferring gas through the heat transferring gas introducing device when the amount of vapor generated in the vaporizer is increased.

Raw fuel vaporizing apparatus, method of vaporizing raw fuel, and fuel cell system equipped with raw fuel vaporizing apparatus

A fuel cell system comprises a fuel cell stack an evaporator a reforming device a supercharger an offgas heating device and a catalytic combustion chamber Offgas exhausted from the fuel cell stack is burnt in the catalytic combustion chamber and the burnt offgas is introduced to the evaporator to be heat exchanged with a reforming raw fuel and reforming air. The burnt offgas cooled by means of the heat exchange is introduced to the offgas heating device to be used as a heat source for heating the offgas exhausted from the fuel cell stack The offgas can be heated by the burnt offgas, and the moisture in the offgas can be vaporized and introduced to the catalytic combustion chamber

Growing community of inventors

Haga-gun, Japan

Satoshi Hanai