Patent application number | Description | Published |
20090055105 | GAS TURBINE PERFORMANCE ANALYSIS METHOD AND GAS TURBINE PERFORMANCE ANALYSIS SYSTEM - A gas turbine performance analysis system comprising:
| 02-26-2009 |
20090132095 | CONTROL DEVICE FOR PLANT, CONTROL DEVICE FOR THERMAL POWER PLANT, AND GAS CONCENTRATION ESTIMATION DEVICE OF COAL-BURNING BOILER - A control device for a plant includes a manipulation signal generation section for generating the manipulation signal to the plant, a model adapted to simulate a characteristic of the plant, a learning section for generating an input signal of the model so that an output signal obtained by the model simulating the characteristic of the plant satisfies a predetermined target, a learning signal generation section for calculating a learning signal in accordance with a learning result in the learning section, a manipulation result evaluation section for calculating a first deviation as a deviation between a first measurement signal of the plant obtained as a result of application of a certain manipulation signal to the plant and a target value of the measurement signal, and a second deviation as a deviation between a second measurement signal of the plant obtained as a result of application of an updated manipulation signal to the plant and the target value, and a correction signal generation section for generating, when the second deviation calculated by the manipulation result evaluation section is greater than the first deviation, a correction signal of the manipulation signal to be generated by the manipulation signal generation section. | 05-21-2009 |
20100101462 | Oxyfuel Boiler and a Method of Controlling the Same - An oxyfuel boiler | 04-29-2010 |
20100107940 | Oxyfuel Boiler System and Method of Controlling the Same - The oxyfuel boiler system comprises: an oxygen generator; a coal mill; a burner to burn pulverized coal; an after-gas port to which oxygen generated at the oxygen generator is supplied; a boiler provided with the burner and the after-gas port on its wall; a flue introducing combustion exhaust gas from the boiler to the outside; a recirculation gas supply pipe having an exhaust gas tapping port in the midway of the flue and supplying recirculation exhaust gas to the coal mill, the burner, and the after gas port; and an oxygen supply pipe supplying oxygen from the oxygen generator to the burner and the after-gas port, wherein the exhaust gas tapping port is disposed downstream of a dry dust-removing apparatus arranged in the flue, and there is provided an oxygen controlling apparatus for making a concentration of oxygen to be supplied to the after-gas port lower than that of oxygen to be supplied to the burner. | 05-06-2010 |
20100114457 | CONTROL SYSTEM FOR CONTROL SUBJECT HAVING COMBUSTION UNIT AND CONTROL SYSTEM FOR PLANT HAVING BOILER - A control system includes a basic control command operating unit, a fuel data storage unit, a running results database for storing past running results values of a control subject, a data creating unit configured to calculate a distance between data of the past running results values and the data sets and determining data set in which a distance between data becomes minimum, a modeling unit configured to model a relationship between operation parameters of a combustion apparatus and components in combustion gas of the combustion apparatus by using the data set determined by the data creating unit and a correcting unit for calculating combustion apparatus operation parameters with which components having a better condition than that of the components in a current gas are provided by using a model of the modeling unit and correcting operation command values of the basic control command operating unit by calculated operation parameters. | 05-06-2010 |
20100212555 | Oxyfuel Combustion Boiler Plant and Operating Method for the Same - An oxyfuel combustion boiler plant having a first boiler and a second boiler for injecting gas including oxygen in higher concentration than that in the air, gas including carbon dioxide in higher concentration than that in the air, and fuel from a burner and generating steam by combustion gas in a furnace, respectively, comprising:
| 08-26-2010 |
20110011315 | Oxyfuel Boiler and Control Method for Oxyfuel Boiler - An oxyfuel boiler structured so as to mix oxygen separated from air with a part of exhaust gas branched from exhaust gas discharged from the boiler for generating vapor and supplying to a vapor demand facility by burning coal fuel, and supply the mixed gas to the boiler as an oxidizing gas for burning the coal, wherein an air separation unit for separating air and manufacturing oxygen from air, an oxygen supply system for leading the oxygen manufactured by the air separation unit to the oxyfuel boiler, a recirculation system for leading a part of exhaust gas branched from the exhaust gas discharged from the oxyfuel boiler to the oxyfuel boiler, and a recirculation fan for supplying the exhaust gas to the recirculation system are installed, respectively. | 01-20-2011 |
20110073020 | Oxyfuel Combustion Boiler Plant - An oxyfuel combustion boiler plant comprising: an air separation unit for manufacturing oxygen by separating nitrogen from air, a boiler having a burner for burning the oxygen supplied from the air separation unit and pulverized coal, and a primary system pipe for supplying the pulverized coal to the burner, an exhaust gas recirculation system pipe for supplying combustion exhaust gas discharged from the boiler to the primary system pipe, and a carbon dioxide capture unit for capturing carbon dioxide in the exhaust gas discharged from the boiler, the oxyfuel combustion boiler plant is further comprising: an oxygen supply pipe for supplying the oxygen manufactured by the air separation unit to the primary system pipe in the burner, and a pipe for supplying the combustion exhaust gas discharged from the boiler to the oxygen supply pipe, wherein an injection port of the oxygen supply pipe is disposed on an upstream side of an injection portion of the burner. | 03-31-2011 |
20110073051 | Oxyfuel Combustion Boiler Plant and Operation Method of Oxyfuel Combustion Boiler Plant - An oxyfuel combustion boiler plant comprising:
| 03-31-2011 |
20110094105 | Retrofit Method for Pulverized Coal Boiler - A method for retrofitting a pulverized coal boiler in an air combustion boiler system is disclosed, which has a plurality of burners over a plurality of stages along the vertical direction on a wall surface of a furnace of the pulverized coal boiler and an after-air port for introducing air for two-stage combustion located above the burners to retrofit into a two-stage combustion pulverized coal boiler in an oxyfuel combustion boiler system. | 04-28-2011 |
20120166375 | POWER PLANT CONTROL DEVICE WHICH USES A MODEL, A LEARNING SIGNAL, A CORRECTION SIGNAL, AND A MANIPULATION SIGNAL - A gas concentration estimation device of a coal-burning boiler adapted to estimate the concentration of the gas component included in an exhaust gas emitted from a coal-burning boiler using a neural network, including: a process database section adapted to store process data of a coal-burning boiler; a filtering processing section adapted to perform filtering processing for extracting data suitable for learning of a neural network from the process data stored in the process database section; a neural-network learning processing section adapted to perform learning processing of the neural network based on the data extracted by the filtering processing section and suitable for learning of the neural network; and a neural-network estimation processing section adapted to perform estimation processing of the CO concentration or the NOx concentration in the exhaust gas emitted from the coal-burning boiler based on the learning processing of the neural-network learning processing section. | 06-28-2012 |
20120324893 | Coal-Fired Power Plant, and Method for Operating Coal-Fired Power Plant - A coal-fired power plant having a control unit including a first flow rate control valve for regulating a water flow rate of a water feed bypass system, a second flow rate control valve installed in an extraction pipe for extracting steam from a steam turbine, a first temperature sensor on a downstream side of a heat recovery device, and a second temperature sensor on a downstream side of a heat exchanger and the control unit regulates opening of the first and second flow rate control valves on the basis of an exhaust gas temperature detected by the first temperature sensor and a feed water temperature detected by the second temperature sensor. | 12-27-2012 |