摘要:
To provide a solid oxide fuel cell device capable of smooth transition from a startup state to an electrical generating state. The present invention is a solid oxide fuel cell device (1) for generating electricity, having a fuel cell module (2); a reformer (20), a fuel supply device (38); a water supply device (28), a generating oxidant gas supply device (45), and a controller (110) for controlling the fuel supply device and water supply device at the time of startup when the fuel cell module solid oxide fuel cell unit is raised to a temperature at which electrical generation is possible; whereby the controller controls the fuel supply device during the SR operation such that electrical generation is started after reducing the fuel supply flow rate prior to starting electrical generation.
摘要:
To provide a solid oxide fuel cell device capable of smooth transition from a startup state to an electrical generating state. The present invention is a solid oxide fuel cell device (1) for generating electricity, having a fuel cell module (2); a reformer (20), a fuel supply device (38); a water supply device (28), a generating oxidant gas supply device (45), and a controller (110) for controlling the fuel supply device and water supply device at the time of startup when the fuel cell module solid oxide fuel cell unit is raised to a temperature at which electrical generation is possible, inducing in the reformer a SR in which only a steam reforming reaction occurs; wherein the control section maintains the fuel supply flow rate in the SR immediately prior to electrical generation at an electrical generation standby fuel supply flow rate determined according to solid oxide fuel module usage conditions and smaller than the fuel supply flow rate at the time of SR startup.
摘要:
The invention relates to a method and a device for operating a fuel cell system with a recirculation blower (6) arranged in a fuel circuit of the fuel cell system, by means of which fuel (BS1) issuing on the anode side is fed back to the fuel cell system on the inlet side, wherein the fuel (BS1) issuing on the anode side is conveyed in a fuel return line (Z2) at least in places in alternating flow directions (R1 and R2).
摘要:
Bei einem Verfahren zum Betreiben einer Anlage zur gleichzeitigen Erzeugung von elektrischer und thermischer Energie mit mindestens einem Brennstoffzellenstapel (1) mit einem Reformer (2) zur Herstellung von wasserstoffreichem Prozessgas aus Kohlenwasserstoffen und einer Regelung (5), bei der die Regelung (5) die Eingangsvolumenströme, insbesondere den Brenngasstrom des Reformers (2) steuert, wird vorgeschlagen, dass dem Brennstoffzellenstapel (1) soviel Leistung entzogen wird, dass sich eine vorgegebene Sollspannung und / oder Spannungsgradient einstellt.
摘要:
A fuel cell system of the present invention includes: a fuel cell (101); a gas passage through which an electric power generating gas used for electric power generation in the fuel cell (101) flows; a cooling water passage through which cooling water for cooling down the fuel cell (101) flows; a cooling water tank (106) disposed on the cooling water passage to store the cooling water; a humidifier having a moisture permeable membrane (61) and configured to carry out moisture exchange between the cooling water flowing through the cooling water passage and the electric power generating gas flowing through the gas passage via the moisture permeable membrane (61); and a pressure compensating gas supplier (110) configured to supply a pressure compensating gas to a specific section including the humidifier on the gas passage when a pressure in the gas passage lowers, and a water surface of the cooling water tank (106) is higher than an upper end of the moisture permeable membrane (61) of the humidifier.
摘要:
A method for operating, especially for starting, a fuel cell like especially a solid oxide fuel cell (SOFC) is disclosed which method comprises a starting operation with a first or initial start phase and an optional second or intermediate start phase which is initiated when the fuel cell has reached a predetermined medium temperature below a steady state operational temperature range, before a steady state operation is activated, wherein during the first or initial start phase fuel is subjected to an exothermic reaction with oxygen in a burner unit (2) and output gases from the burner unit (2) are used to warm up and passively heat the fuel cell (1). Furthermore, a fuel cell arrangement comprising a fuel cell (1), especially a SOFC hybrid system, for conducting this method is disclosed.
摘要:
In a method for starting up a fuel cell system, reforming is reliably performed from an early stage to more reliably prevent the oxidative degradation of the anode. A method for starting up a fuel cell system including a reformer having a reforming catalyst layer, for reforming a hydrocarbon-based fuel to produce a hydrogen-containing gas, and a high temperature fuel cell for generating electric power using the gas, wherein a) a temperature condition of the catalyst layer under which the fuel at a flow rate lower than a fuel flow rate at the completion of start-up can be reformed, and a temperature condition of the catalyst layer under which the fuel at the flow rate at the completion of start-up can be reformed are previously found, b) the temperature of the catalyst layer is increased, while the temperature of the catalyst layer is measured, c) the measured temperature of the catalyst layer is compared with at least one of the temperature conditions to determine the flow rate of the fuel that can be reformed at a point of time when the measurement is performed, d) the fuel at the determined flow rate is supplied to the catalyst layer and reformed, and the reformed gas is supplied to the anode of the fuel cell, when the determined flow rate exceeds the present value of the fuel flow rate, and the steps c and d are repeated until the feed rate of the fuel to the catalyst layer becomes the flow rate at the completion of start-up. Also provided is a fuel cell system appropriate for this method.
摘要:
When terminating power generation by a fuel cell 3 in a fuel cell system 1, an amount of a raw fuel material introduced to a reforming catalyst 2a of a reformer 2 is reduced. Here, before the temperature of the reforming catalyst 2a is lowered to the un-reformed gas generation temperature, an amount of water supplied to the reforming catalyst 2a is controlled to increase the temperature of the reforming catalyst 2a. Thus, upon termination of power generation in the fuel cell 3, no un-reformed gas is generated and the reformed gas is supplied to the fuel cell 3.