Abstract: Disclosed is a fuel cell-based multiple power supply system, and more particularly a fuel cell-based multiple power supply system capable of alternately operating a polymer electrolyte membrane fuel cell that is rapidly started up and provides fast response and a solid oxide fuel cell that provides high power generation efficiency depending on required situations and remedying some power deficiency using an energy storage system or a secondary battery, such as a super capacitor, thereby flexibly dealing with a situation difficult to solve using a single fuel cell.

Abstract: A system for oxidizing nitrogen monoxide (NO) contained in exhaust gas injects a liquid oxidizing agent into the exhaust gas and simultaneously removes nitrogen oxides and sulfur oxides from exhaust gas using an organic catalyst. The system includes an absorption tank for storing an absorption solution containing an organic catalyst, the absorption tank communicating with an oxygen supply pipe for supplying oxygen-containing gas to the absorption tank; an absorption tower, extending upward from the absorption tank, through which the exhaust gas flows from an exhaust gas inlet duct to an exhaust gas outlet; a first injection unit to inject the absorption solution into the absorption tower; a second injection unit to inject an oxidizing agent solution into at least one of the inlet duct and the absorption tower; and an oxidizing agent supply unit for supplying the oxidizing agent solution to the second injection unit.

Abstract: A wet flue gas desulfurization apparatus includes an absorption tank in which an absorption solution containing an alkaline absorbent is stored; an absorption tower extending upward from the absorption tank; a flue gas inlet duct communicating with a first portion of the absorption tower; a flue gas outlet duct communicating with a second portion of the absorption tower; a spray unit to spray the absorption solution inside the absorption tower; a circulation pump to pump the absorption solution from the absorption tank and to supply the absorption solution to the spray unit; a byproduct discharging unit to discharge a byproduct downward from the absorption tank; and an oxygen supply pipe through which an oxygen-containing gas is supplied to a target point in the absorption tank, the target point being adjustable along a vertical direction or a horizontal direction, enabling adjustment of an internal position to which the gas is supplied.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a first barrier partitioning the space into first and second chamber regions, a flue gas inlet to introduce raw flue gas into the first chamber region, and a flue gas outlet to discharge desulfurized flue gas from the second chamber region; a second barrier partitioning a slurry reservoir into a first reservoir part to store a first pH alkaline slurry and a second reservoir part to store a second pH alkaline slurry; a first sprayer to spray the alkaline slurry from the first reservoir part into the first chamber region to remove sulfur from the flue gas in the first chamber region; and a second sprayer to spray the alkaline slurry from the second reservoir part into the second chamber region to remove sulfur from the flue gas in the second chamber region.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a tubular barrier partitioning the space into an inner chamber region having a first volume and an outer chamber region surrounding the inner chamber region and having a second volume, a flue gas inlet to introduce raw flue gas into the outer chamber region, and a flue gas outlet to discharge desulfurized flue gas from the inner chamber region; a slurry reservoir disposed under the chamber to receive and store an alkaline slurry; first and second sprayers to spray the alkaline slurry into the outer and inner chamber regions, respectively, in order to remove sulfur from the flue gas in the corresponding chamber region; and a demister disposed in the inner chamber region between the second sprayer and the flue gas outlet to remove mist from the flue gas in the inner chamber region.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a first barrier partitioning the space into first and second chamber regions, a flue gas inlet to introduce raw flue gas into the first chamber region, and a flue gas outlet to discharge desulfurized flue gas from the second chamber region; a second barrier partitioning a slurry reservoir into a first reservoir part to store a first pH alkaline slurry and a second reservoir part to store a second pH alkaline slurry; a first sprayer to spray the alkaline slurry from the first reservoir part into the first chamber region to remove sulfur from the flue gas in the first chamber region; and a second sprayer to spray the alkaline slurry from the second reservoir part into the second chamber region to remove sulfur from the flue gas in the second chamber region.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a tubular barrier partitioning the space into an inner chamber region having a first volume and an outer chamber region surrounding the inner chamber region and having a second volume, a flue gas inlet to introduce raw flue gas into the outer chamber region, and a flue gas outlet to discharge desulfurized flue gas from the inner chamber region; a slurry reservoir disposed under the chamber to receive and store an alkaline slurry; first and second sprayers to spray the alkaline slurry into the outer and inner chamber regions, respectively, in order to remove sulfur from the flue gas in the corresponding chamber region; and a demister disposed in the inner chamber region between the second sprayer and the flue gas outlet to remove mist from the flue gas in the inner chamber region.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a first barrier partitioning the space into first and second chamber regions, a flue gas inlet to introduce raw flue gas into the first chamber region, and a flue gas outlet to discharge desulfurized flue gas from the second chamber region; a second barrier partitioning a slurry reservoir into a first reservoir part to store a first pH alkaline slurry and a second reservoir part to store a second pH alkaline slurry; a first sprayer to spray the alkaline slurry from the first reservoir part into the first chamber region to remove sulfur from the flue gas in the first chamber region; and a second sprayer to spray the alkaline slurry from the second reservoir part into the second chamber region to remove sulfur from the flue gas in the second chamber region.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a tubular barrier partitioning the space into an inner chamber region having a first volume and an outer chamber region surrounding the inner chamber region and having a second volume, a flue gas inlet to introduce raw flue gas into the outer chamber region, and a flue gas outlet to discharge desulfurized flue gas from the inner chamber region; a slurry reservoir disposed under the chamber to receive and store an alkaline slurry; first and second sprayers to spray the alkaline slurry into the outer and inner chamber regions, respectively, in order to remove sulfur from the flue gas in the corresponding chamber region; and a demister disposed in the inner chamber region between the second sprayer and the flue gas outlet to remove mist from the flue gas in the inner chamber region.

Abstract: A system for oxidizing nitrogen monoxide (NO) contained in exhaust gas injects a liquid oxidizing agent into the exhaust gas and simultaneously removes nitrogen oxides and sulfur oxides from exhaust gas using an organic catalyst. The system includes an absorption tank for storing an absorption solution containing an organic catalyst, the absorption tank communicating with an oxygen supply pipe for supplying oxygen-containing gas to the absorption tank; an absorption tower, extending upward from the absorption tank, through which the exhaust gas flows from an exhaust gas inlet duct to an exhaust gas outlet; a first injection unit to inject the absorption solution into the absorption tower; a second injection unit to inject an oxidizing agent solution into at least one of the inlet duct and the absorption tower; and an oxidizing agent supply unit for supplying the oxidizing agent solution to the second injection unit.

Abstract: A wet flue gas desulfurization apparatus includes an absorption tank in which an absorption solution containing an alkaline absorbent is stored; an absorption tower extending upward from the absorption tank; a flue gas inlet duct communicating with a first portion of the absorption tower; a flue gas outlet duct communicating with a second portion of the absorption tower; a spray unit to spray the absorption solution inside the absorption tower; a circulation pump to pump the absorption solution from the absorption tank and to supply the absorption solution to the spray unit; a byproduct discharging unit to discharge a byproduct downward from the absorption tank; and an oxygen supply pipe through which an oxygen-containing gas is supplied to a target point in the absorption tank, the target point being adjustable along a vertical direction or a horizontal direction, enabling adjustment of an internal position to which the gas is supplied.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a tubular barrier partitioning the space into an inner chamber region having a first volume and an outer chamber region surrounding the inner chamber region and having a second volume, a flue gas inlet to introduce raw flue gas into the outer chamber region, and a flue gas outlet to discharge desulfurized flue gas from the inner chamber region; a slurry reservoir disposed under the chamber to receive and store an alkaline slurry; first and second sprayers to spray the alkaline slurry into the outer and inner chamber regions, respectively, in order to remove sulfur from the flue gas in the corresponding chamber region; and a demister disposed in the inner chamber region between the second sprayer and the flue gas outlet to remove mist from the flue gas in the inner chamber region.

Abstract: A wet desulfurization apparatus includes a chamber enclosing a space for passing flue gas and including a first barrier partitioning the space into first and second chamber regions, a flue gas inlet to introduce raw flue gas into the first chamber region, and a flue gas outlet to discharge desulfurized flue gas from the second chamber region; a second barrier partitioning a slurry reservoir into a first reservoir part to store a first pH alkaline slurry and a second reservoir part to store a second pH alkaline slurry; a first sprayer to spray the alkaline slurry from the first reservoir part into the first chamber region to remove sulfur from the flue gas in the first chamber region; and a second sprayer to spray the alkaline slurry from the second reservoir part into the second chamber region to remove sulfur from the flue gas in the second chamber region.

Abstract: A fuel cell using biogas as a fuel is provided, in which the fuel cell is supplied with a first gas required at a fuel electrode and a second gas required at an air electrode, which are separated from the biogas by a selective permeation method using a separation membrane of a gas-purification separation unit, and supplies gas discharged from the fuel cell along with the biogas to the gas-purification separation unit.

Abstract: Disclosed is a molten carbonate fuel cell comprising a reinforced lithium aluminate matrix, a cathode, an anode, a cathode frame channel and an anode frame channel, wherein at least one of the cathode frame channel and the anode frame channel is filled with a lithium source. Disclosed also are a method for producing the same, and a method for supplying a lithium source. The molten carbonate fuel cell in which a lithium source is supplied to an electrode has high mechanical strength and maintains stability of electrolyte to allow long-term operation.

Abstract: A fuel cell using biogas as a fuel is provided, in which the fuel cell is supplied with a first gas required at a fuel electrode and a second gas required at an air electrode, which are separated from the biogas by a selective permeation method using a separation membrane of a gas-purification separation unit, and supplies gas discharged from the fuel cell along with the biogas to the gas-purification separation unit.

Abstract: Disclosed herein is a separator for a molten carbonate fuel cell, the separator including four steel sheets in which edges of the four steel sheets are joined to each other thereby providing three spaces therebetween, comprising a cathode channel, serving as a flow path of oxidant gas, formed in the first space; an anode channel, serving as a flow path of fuel gas, formed in the second space such that the anode channel is separated from the cathode channel; and a fuel gas reforming channel formed in the third space, which is located between the first space and the second space. The separator for a molten carbonate fuel cell is advantageous in that the volume of the fuel cell is decreased, and the structure thereof is simple, thus reducing the production cost thereof.

Abstract: Disclosed herein is a method of manufacturing an anode for in-situ sintering for a molten carbonate fuel cell, in which an anode green sheet is prepared using a slurry, and then a reinforcing layer is placed on the anode green sheet and then pressed, thereby improving the mechanical stability of a fuel cell stack and the long term stability of an anode, and an anode manufactured using the method.

Abstract: Disclosed is a molten carbonate fuel cell comprising a reinforced lithium aluminate matrix, a cathode, an anode, a cathode frame channel and an anode frame channel, wherein at least one of the cathode frame channel and the anode frame channel is filled with a lithium source. Disclosed also are a method for producing the same, and a method for supplying a lithium source. The molten carbonate fuel cell in which a lithium source is supplied to an electrode has high mechanical strength and maintains stability of electrolyte to allow long-term operation.

Abstract: The steam generator for a fuel cell with dual use for heating fuel electrode gas according to the invention is configured as a single unit comprising a steam generator (100) that heats introduced water to generate steam, a steam superheater (200) that is connected to the steam generator (100) and used to supply superheat to the steam in order to elevate the temperature of the steam, and a fuel electrode gas heater (300) that is used to supply heat to the fuel electrode gas in order to elevate the temperature of the fuel electrode gas. The steam generator (100), steam superheater (200) and fuel electrode gas heater (300) are connected with an air electrode exhaust gas flow path through which the air electrode exhaust gas passes, to receive heat supply through heat exchange.