ELECTRIC POWER DEVELOPMENT CO., LTD. Patent applications |
Patent application number | Title | Published |
20140203038 | POWDER SUPPLY DEVICE AND POWDER SUPPLY METHOD - A powder supply device | 07-24-2014 |
20140105249 | IN-FURNACE TEMPERATURE MEASUREMENT DEVICE - The present invention relates to an in-furnace temperature measurement device | 04-17-2014 |
20120094339 | MICRO-ALGA BELONGING TO GENUS NAVICULA, PROCESS FOR PRODUCTION OF OIL BY CULTURE OF THE MICRO-ALGA, AND OIL COLLECTED FROM THE MICRO-ALGA - Disclosed are: a microalga highly capable of producing aliphatic hydrocarbons of 16 to 26 carbon atoms; a process for producing oil, which comprises a step of culturing the microalga; oil collected from the microalga; a fuel produced from the microalga; and a method for fixing carbon dioxide, which comprises a step of culturing the microalga. | 04-19-2012 |
20110318697 | GROUND FLARE - Provided is a ground flare in which a low-frequency vibration generated from a ground flare tower, such as a chimney, is properly adjusted to suppress it below a fixture-vibration generation limit, thereby preventing surrounding objects from resonating and vibrating. In a ground flare that burns a flammable exhaust gas with a burner at the lower end of a chimney, in which the lower end of the chimney and the periphery of the burner are surrounded by a windbreak, the low-frequency-noise sound pressure level of a ground flare tower composed of the chimney and the windbreak is reduced by selecting at least one of changing a natural frequency generated from the ground flare tower, using multiple ground flare towers, and installing a low-frequency-vibration absorber in the ground flare tower. | 12-29-2011 |
20110132243 | METHOD AND APPARATUS OF CONTROLLING EXHAUST GAS IN OXYFUEL COMBUSTION BOILER - In an apparatus of controlling an exhaust gas in an oxyfuel combustion boiler having the boiler | 06-09-2011 |
20110126780 | PULVERIZED COAL BURNER FOR OXYFUEL COMBUSTION BOILER - In order to provide a pulverized coal burner for an oxyfuel combustion boiler which attains uniform combustion from a pulverized coal burner and which constrains a temperature rise of an oxygen injection nozzle, burner inner and outer cylinders are arranged to penetrate a wind box | 06-02-2011 |
20110126742 | METHOD AND APPARATUS OF CONTROLLING FLOW RATE OF PRIMARY RECIRCULATING EXHAUST GAS IN OXYFUEL COMBUSTION BOILER - Provided are a method and an apparatus of controlling a flow rate of a primary recirculating exhaust gas in an oxyfuel combustion boiler, capable of realizing a stable combustion by a burner in oxyfuel combustion. Weight ratio of flow rate of primary recirculating exhaust gas [ton/h] to amount of pulverized coal from a mill [ton/h] is defined as G/C, and the flow rate of primary recirculating exhaust gas is controlled so that the G/C falls within a given range. | 06-02-2011 |
20110107944 | METHOD AND APPARATUS OF CONTROLLING EXHAUST GAS IN OXYFUEL COMBUSTION BOILER - Provided are a method and an apparatus of controlling exhaust gas in an oxyfuel combustion boiler which can attain stable combustion of the boiler while an amount of unburned combustibles and a NO | 05-12-2011 |
20110104624 | METHOD AND APPARATUS OF CONTROLLING COMBUSTION IN OXYFUEL COMBUSTION BOILER - A method and an apparatus of controlling combustion in an oxyfuel combustion boiler are provided which ensure a sufficient furnace heat absorption through prevention of lowering of flame temperature, enabling oxyfuel combustion operations to be performed in a stable manner. A boiler-brought-in oxygen density which is an oxygen density for a total amount of gases introduced into a coal burning boiler is calculated and a flow rate of total recirculating gases is controlled such that the boiler-brought-in oxygen density falls within a predetermined range. | 05-05-2011 |
20110083594 | METHOD AND APPARATUS OF CONTROLLING OXYGEN SUPPLY IN OXYFUEL COMBUSTION BOILER - Provided are a method and an apparatus of controlling an oxygen supply in an oxyfuel combustion boiler capable of attaining stable oxyfuel combustion even when properties of coal are changed. A boiler-brought-in oxygen density is obtained when coal with a fuel ratio measured by fuel measuring means | 04-14-2011 |
20110048295 | METHOD AND FACILITY FOR FEEDING CARBON DIOXIDE TO OXYFUEL COMBUSTION BOILER - Provided are fuel feed means | 03-03-2011 |
20110045421 | METHOD AND APPARATUS OF CONTROLLING OXYGEN SUPPLY FOR BOILER - An apparatus of controlling oxygen supply for a boiler having wind boxes | 02-24-2011 |
20100326974 | METHOD FOR IMPROVING RESIDUAL STRESS IN TUBULAR BODY - An object is to provide a method and an apparatus for improving a residual stress in a tubular body, which are enabled to improve the residual stress reliably by clearly defining controlling rage for treatment conditions without depending on an installation state and configuration of the tubular body. When a cylindrical tubular body ( | 12-30-2010 |
20100059113 | DYE-SENSITIZED SOLAR CELL - A dye-sensitized solar cell is provided, which includes glass substrates ( | 03-11-2010 |
20090304563 | Mercury removal system and method - The present invention provides a mercury removal system and method for effectively removing a mercury component, which is present in a gas stream in an extremely small amount in wet gas cleaning used for coal or heavy oil gasification, petroleum refining and the like. The mercury removal system in wet gas cleaning comprises a water washing tower for introducing therein a target gas containing a mercury component and transferring the mercury component into an absorbing solution, a flush drum ( | 12-10-2009 |
20090272300 | METHOD AND APPARATUS FOR CONTROLLING COMBUSTION IN OXYGEN FIRED BOILER - Provided are a method and an apparatus for controlling combustion in an oxygen fired boiler which are easily applicable to an existing air fired boiler for easy and stable control of the combustion. | 11-05-2009 |
20090249691 | Apparatus and Method for Gasifying Solid Fuel - Apparatus for gasifying a solid fuel that supplies a solid fuel such as coal by dry condition to a gasification furnace of an entrained-bed type is constructed so as to be able to collect the char discharged from the gasification furnace and re-supply the char to the furnace without using a lock hopper and without changing the char into slurry form. | 10-08-2009 |
20090140195 | Gate valve - An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and maintenance to be performed easily. A gate valve installed in a transport line for transporting fluid containing particulate material at a coal gasification plant includes a valve box having an inlet portion and an outlet portion in which a channel constituting a part of the transport line is formed; a valve unit, provided between the inlet portion and the outlet portion, which extends in an opening-and-closing direction orthogonal to an axial direction of the channel, and which is movable in the opening-and-closing direction; a wedge plate provided between the valve unit and the inlet portion so as to extend in the opening-and-closing direction; and a guide plate provided between the valve unit and the outlet portion so as to extend in the opening-and-closing direction. Areas between the valve unit and the wedge plate and between and the valve unit and guide plate are sealed by means of surface contact. | 06-04-2009 |
20080307704 | Coal gasification plant and method for operating the same - It is an object to solve a bypass line corrosion problem effectively, enable prompt supply of a fuel gas into a bypass line in the event of an emergency, and provide an inexpensive coal gasification plant. An integrated coal gasification combined cycle power generation plant includes a coal gasification furnace, a dust remover, a gas refiner, a gas turbine and the like, a main system line connecting therebetween, and a bypass line connecting between the outlet side of the coal gasification furnace in the main system line and a flare stack, wherein a dust remover bypass valve which is disposed in an upstream portion of the bypass line and which opens and closes the bypass line, a treatment gas control valve which is disposed in a downstream portion of the bypass line and which controls the flow rate, and a first inert gas input line which is disposed downstream from the dust remover bypass valve and which supplies the inert gas to the bypass line are provided. | 12-18-2008 |