The present application provides combined cycle fuel cell systems that include a fuel cell, such as a solid-oxide fuel cell (SOFC), comprising an anode that generates a tail gas and a cathode that generates cathode exhaust. The system or plant may include adding fuel, such as processed or refined tail gas, to the inlet air stream of a reformer to heat the reformer. The system or plant may include removing water from the tail gas and recycling the removed water into an inlet fuel stream. The inlet air stream may be the cathode exhaust stream of the fuel cell, and the inlet fuel stream may be input hydrocarbon fuel that is directed to the reformer to produce hydrogen-rich reformate. The system or plant may direct some of the processed or refined tail gas to a bottoming cycle.

Solid-oxide fuel cell systems

The invention discloses a solid oxide fuel cell system and a starting method thereof. The starting method of the solid oxide fuel cell system comprises the following steps: heating air; heating fuel;and making heated air and fuel enter a fuel cell stack to complete preheating, wherein the step of heating fuel comprises the following specific step: heating fuel with a first heater, and the first heater is connected in series with a fuel reformer; and/or the step of heating air comprises the following specific step: heating air with a second heater, and the second heater is connected in serieswith an air heater. Through adoption of the starting method of the solid oxide fuel cell system disclosed by the invention, the heating speed of the fuel and/or air can be increased, thereby increasing the preheating speed of the fuel cell stack, and shortening the starting time of the solid oxide fuel cell system.

Solid oxide fuel cell system and starting method thereof

The invention discloses a solid oxidation fuel battery, a heat-preservation method and a vehicle The heat-preservation method comprises the following step: when the solid oxidation fuel battery is ata non-working state, heating a pile of the solid oxidation fuel battery by using an auxiliary heater When the solid oxidation fuel battery is at the non-working state, to prevent the pile from beingrapidly cooled, the pile can be heated by using the auxiliary heater, and thus the pile can be constantly kept at a set temperature or greater; due to the arrangement, when the solid oxidation fuel battery is started, a relatively small heating temperature of the pile can be achieved, the start time of the solid oxidation fuel battery can be greatly shortened, and the start speed can be increased

Solid oxidation fuel battery, heat-preservation method and vehicle

The invention relates to a solid oxide fuel cell (SOFC) coke oven gas power generation process and device. The process comprises the following steps of (A) pressurizing air and then making the air enter an SOFC cell stack after heat exchange; and (B) pressurizing coke oven gas and then making the coke oven gas enter a desulfurization device to remove hydrogen sulfide gas in the coke oven gas, carrying out methane reforming in a methane steam reformer at 700-1000 DEG C, converting the methane into carbon monoxide, hydrogen and a small amount of carbon dioxide, and sending the reformed airflow containing the hydrogen, the carbon monoxide, a small amount of carbon dioxide and the water vapor into the SOFC fuel cell stack in order to react with the air to generate electric energy.

Solid oxide fuel cell coke oven gas power generation process and device

The invention provides a distributed cold-heat-power combined supply system, wherein a hydrogen production and hydrogen storage system electrolyzes high-temperature water vapor to generate oxygen andhydrogen; a first fuel cell system utilizes oxygen or air and hydrogen to generate power, and transmits the electric energy generated by the power generation to a micro-grid; a second fuel cell systemutilizes hydrogen or natural gas and air to generate power, transmits electric energy to the micro-grid, and combusts the residual hydrogen or natural gas and air to generate flue gas; an absorptiontype refrigerator utilizes the flue gas and the high-temperature water vapor for refrigeration; a hydrothermal management system educes the heat generated when the first fuel cell system, the hydrogenproduction and storage system and the absorption refrigerator operate and supplies the heat to users in the form of hot water; a renewable energy energy-supply system generates high-temperature steam. The distributed cold-heat-power combined supply system can achieve multi-functional complementation, improve energy supply efficiency and energy safety, reduce fossil fuel consumption, has no defectof large CO2 emission, and can achieve combined supply of heat energy, electric energy and cold energy.

Distributed cold-heat-power combined supply system

The utility model relates to a solid oxide fuel cell system which comprises an anode gas supply station, a cathode gas supply station, a core battery pile, a reforming reactor, a gas heater, a water vapor vaporizer and a water pump. A first gas is pretreated into high-temperature hydrogen outside the core battery pile, a second gas is preheated into a high-temperature gas in front of the core battery pile, and the high-temperature hydrogen and the high-temperature gas chemically react inside the core battery pile to generate a large quantity of electric energy. Because the heating process is carried out outside the core battery pile, the heating process and a reaction process in the core battery pile are more balanced, and the energy utilization rate is higher.

Zhu Yibin

Papers

Solid oxide fuel cell system