摘要:
A hydrogen generating apparatus including a reformer which performs a reforming reaction using a material and steam to generate hydrogen-containing gas; a water evaporator which generates the steam supplied to the reformer; a first water pathway through which reforming water to be supplied to the water evaporator flows; a pump which supplies the reforming water to the water evaporator 1a; a second water pathway 7 branching from the first water pathway on the downstream side of the pump; a first water tank to which the water flowing through the second water pathway flows; a first flow rate controller provided on the second water pathway; and a controller which operates the pump and controls the first flow rate controller so that water flows through the second water pathway, thereby stably generating hydrogen and preventing degradation of the reformer thereof is realized.
摘要:
A hydrogen generator includes: a reformer (102) configured to generate a hydrogen-containing gas by a reforming reaction using a raw material; a combustor (104) configured to heat the reformer; an air supplying device (106) configured to supply combustion air to the combustor; a first heat exchanger (108) configured to recover heat from a flue gas discharged from the combustor; a first heat medium passage (110) through which a first heat medium flows, the first heat medium receiving the heat recovered from the flue gas in the first heat exchanger; a first pump (112) configured to cause the first heat medium in the first heat medium passage to flow; a heat accumulator (140) configured to store the heat recovered by the first heat medium; and a controller (114) configured to cause the first pump to operate in a cooling step that is a step of cooling down at least the reformer by supplying the air from the air supplying device to the combustor in a state where the combustor is not carrying out combustion during a stop processing
摘要:
A hydrogen generating apparatus including a reformer which performs a reforming reaction using a material and steam to generate hydrogen-containing gas; a water evaporator which generates the steam supplied to the reformer; a first water pathway through which reforming water to be supplied to the water evaporator flows; a pump which supplies the reforming water to the water evaporator 1a; a second water pathway 7 branching from the first water pathway on the downstream side of the pump; a first water tank to which the water flowing through the second water pathway flows; a first flow rate controller provided on the second water pathway; and a controller which operates the pump and controls the first flow rate controller so that water flows through the second water pathway, thereby stably generating hydrogen and preventing degradation of the reformer thereof is realized.
摘要:
A fuel cell system (301) of the present invention comprises a fuel cell (1); a water circulating path (9) through which water associated with an operation of the fuel cell (1) circulates; a water circulator (10) for circulating water in the water circulating path (9); a heater (14) for heating the water circulating path (9); a first abnormality detector (29, 30) for detecting a first abnormality which is an abnormality relating to leakage of water from the water circulating path (9); and a controller (16); the fuel cell system being configured to cause the water circulator (10) to perform a water circulating operation for circulating the water in the water circulating path (9) and cause the heater (14) to perform a heating operation for heating the water circulating path (9), to suppress freezing in the water circulating path, wherein the controller (16) is configured to inhibit the water circulating operation for suppressing freezing and not to inhibit the heating operation for suppressing freezing, in a case where the fuel cell system (301) is shut down in response to detection of the first abnormality by the first abnormality detector (29, 30).
摘要:
A hydrogen generation apparatus according to the present invention includes: a hydrogen generator configured to generate a fuel gas through a reforming reaction by using a raw fuel; a combustor configured to heat the hydrogen generator; an on-off valve configured to open/block a gas passage through which the gas that is sent out from the hydrogen generator is supplied to the combustor; a combustion air supply device configured to supply combustion air to the combustor; an ignition device provided at the combustor; and a controller. In a case where flame extinction has occurred at the combustor during generation of a hydrogen-containing gas in a start-up process, the controller performs an ignition operation of the ignition device with the on-off valve kept opened.
摘要:
A fuel cell system (301) of the present invention comprises a fuel cell (1); a water circulating path (9) through which water associated with an operation of the fuel cell (1) circulates; a water circulator (10) for circulating water in the water circulating path (9); a heater (14) for heating the water circulating path (9); a first abnormality detector (29, 30) for detecting a first abnormality which is an abnormality relating to leakage of water from the water circulating path (9); and a controller (16); the fuel cell system being configured to cause the water circulator (10) to perform a water circulating operation for circulating the water in the water circulating path (9) and cause the heater (14) to perform a heating operation for heating the water circulating path (9), to suppress freezing in the water circulating path, wherein the controller (16) is configured to inhibit the water circulating operation for suppressing freezing and not to inhibit the heating operation for suppressing freezing, in a case where the fuel cell system (301) is shut down in response to detection of the first abnormality by the first abnormality detector (29, 30).
摘要:
A fuel cell system (100) according to the present invention includes: a hydrogen generator (1) configured to generate a fuel gas through a reforming reaction by using a raw fuel; a fuel cell (7) configured to generate power by using the fuel gas; a combustor (2) configured to heat the hydrogen generator (1); at least one on-off valve (9A, 9B) configured to open/block a gas passage (9) through which the gas that is sent out from the hydrogen generator (1) is supplied to the combustor (2); and a combustion air supply device (4) configured to supply combustion air to the combustor (2); an ignition device (5) provided at the combustor (2), and a controller (30). The combustor (2) is configured to perform combustion during power generation of the fuel cell (7) by using the gas supplied through the gas passage (9). In a case where accidental flame extinction has occurred at the combustor (2) during the power generation of the fuel cell (7), the controller (30) performs an ignition operation of the ignition device (5) with the on-off valve (9A, 9B) kept opened.
摘要:
A hydrogen generation device or a fuel cell system of the present invention can prevent deterioration or breakage of portions of the hydrogen generation device, which is caused by thermal stress attributable to repeated operation and halt. Thus, it is possible to increase the life and enhance the stability of the device and the system.A hydrogen generation device 76 of a fuel cell system 100 includes a hydrogen generation device main body 78 including a combustor 4 provided therein for combusting a predetermined medium capable of generating hydrogen and a plurality of pipes which are connected to the hydrogen generation device main body 78 for allowing the predetermined medium flow into or out of the hydrogen generation device main body 78. A temperature gradient is formed in the hydrogen generation device main body 78 by operation of the combustor 4, whereby a high temperature portion and a low temperature portion are formed in the hydrogen generation device main body 78. All of the plurality of pipes are arranged in the low temperature portion. A support 70 supports the hydrogen generation device main body 78 from an outside of the low temperature portion.
摘要:
A fuel cell system of the present invention includes: a fuel cell (1) configured to generate electric power using a fuel gas and an oxidizing gas; a hydrogen generator (2) having a reformer (71) configured to generate a hydrogen-containing fuel gas from a raw material and steam; a cooling water passage (4) through which cooling water for cooling down the fuel cell (1) flows; a cooling water tank (5) configured to store the cooling water; a recovered water tank (7) configured to store water recovered from the fuel gas and the oxidizing gas discharged from the fuel cell (1); a first water passage (8) connecting the recovered water tank (7) and the reformer (71); a purifier (10) disposed on the first water passage (8); a second water passage (11) branching from the first water passage (8) located downstream of the purifier (10) and connected to the cooling water tank 85); and a first pump (9) configured to feed the water from the recovered water tank (7) to the first water passage (8).
摘要:
The object of the invention is to provide a fuel cell system capable of performing appropriate, expeditious shutdown operation without use of an auxiliary power source and inert gas (nitrogen gas) in the event of an emergency stop situation such as a power failure. The fuel cell system (100) comprises: a fuel cell (12) configured to generate power by consuming a fuel gas and having an outlet port (104) through which the fuel gas flows out; a moisture removal unit (15) configured to remove moisture contained in the fuel gas that has been sent through the outlet port (104); a burner (16) located downstream of the moisture removal unit (15), for combusting the fuel gas; and a gas pipe on-off valve (18) configured to open and close a pipe (106) that makes the moisture removal unit (15) and the burner (16) communicate with each other, and the fuel cell system (100) is designed such that the gas pipe on-off valve (18) closes when the power generation stops.