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    • 1. 发明专利
    • BOILER APPARATUS
    • CA2731746A1
    • 2011-09-29
    • CA2731746
    • 2011-02-14
    • HITACHI LTD
    • MISHIMA NOBUYOSHISUGIURA TAKASHIKOSAKA TETSUYA
    • F22B33/00F22B37/00
    • A boiler apparatus is provided that generates a heat source capable of efficiently regenerating absorbing liquid while maintaining steam turbine efficiency to a maximum extent. The boiler apparatus includes: an economizer 54 preheating water serving as working fluid of a steam turbine system 500; an air preheater 69 installed downstream of the economizer 54; an evaporator 5 installed downstream of the economizer 54; an evaporator drum 6 using the water vapor from the evaporator 5 to generate saturated water vapor; a reboiler 20 using the saturated water vapor from the evaporator drum 6 to evaporate the absorbing liquid from a regeneration tower 23; a steam bypass pipe 15 connected to a steam pipe 14 through which the saturated water vapor from the evaporator drum 6 passes; a steam escape valve 16 installed in the steam bypass pipe 15; an exhaust gas bypass pipe 44 connected to an exhaust gas pipe 40 connecting the air preheater 69 with an absorption tower 26; and a butterfly valve 43 installed in the exhaust gas bypass pipe 44.
    • 2. 发明专利
    • FOSSIL FUEL COMBUSTION THERMAL POWER SYSTEM INCLUDING CARBON DIOXIDE SEPARATION AND CAPTURE UNIT
    • CA2722195A1
    • 2011-05-25
    • CA2722195
    • 2010-11-23
    • HITACHI LTD
    • MISHIMA NOBUYOSHISUGIURA TAKASHIMATSUURA OSAMUKOSAKA TETSUYA
    • F01K13/00F01K17/04F01N3/08F23J15/04
    • A fossil fuel combustion thermal power system including a carbon dioxide separation and capture unit comprising: a fossil fuel combustion thermal power system including a boiler for burning fossil fuel and generating steam and a steam turbine including a high-pressure turbine driven by the steam generated by the boiler for generating power, and a carbon dioxide separation and capture unit including an absorption tower for absorbing and capturing carbon dioxide included in the exhaust gas discharged from the boiler by burning fossil fuel in the boiler of the fossil fuel combustion thermal power system and a reproduction tower of an absorbing solution for separating carbon dioxide from the absorbing solution absorbing carbon dioxide by circulating the absorbing solution between the reproduction tower and the absorption tower, the fossil fuel combustion thermal power system including the carbon dioxide separation and capture unit further comprising: a back-pressure turbine driven by extraction steam extracted from the high-pressure turbine of the fossil fuel combustion thermal power system through an extraction pipe; a reboiler for supplying heating steam to the reproduction tower of the carbon dioxide separation and capture unit; a steam pipe for supplying steam flowing down through the back-pressure turbine of the fossil fuel combustion thermal power system to the reboiler as a heat source; an emergency relief pipe interconnected to the extraction pipe for supplying the extraction steam extracted from the high-pressure turbine of the fossil fuel combustion thermal power system to the back-pressure turbine for permitting the extraction steam flowing down through the extraction pipe to bypass the back-pressure turbine and flow down to a condenser; and an emergency relief valve installed on the emergency relief pipe for controlling flow of the extraction steam through the emergency relief pipe.
    • 6. 发明专利
    • FOSSIL FUEL COMBUSTION THERMAL POWER SYSTEM INCLUDING CARBON DIOXIDE SEPARATION AND CAPTURE UNIT
    • CA2722195C
    • 2013-03-19
    • CA2722195
    • 2010-11-23
    • HITACHI LTD
    • MISHIMA NOBUYOSHISUGIURA TAKASHIMATSUURA OSAMUKOSAKA TETSUYA
    • F01K13/00F01K17/04F01N3/08F23J15/04
    • A fossil fuel combustion thermal power system including a carbon dioxide separation and capture unit comprising: a fossil fuel combustion thermal power system including a boiler for burning fossil fuel and generating steam and a steam turbine including a high-pressure turbine driven by the steam generated by the boiler for generating power, and a carbon dioxide separation and capture unit including an absorption tower for absorbing and capturing carbon dioxide included in the exhaust gas discharged from the boiler by burning fossil fuel in the boiler of the fossil fuel combustion thermal power system and a reproduction tower of an absorbing solution for separating carbon dioxide from the absorbing solution absorbing carbon dioxide by circulating the absorbing solution between the reproduction tower and the absorption tower, the fossil fuel combustion thermal power system including the carbon dioxide separation and capture unit further comprising: a back-pressure turbine driven by extraction steam extracted from the high-pressure turbine of the fossil fuel combustion thermal power system through an extraction pipe; a reboiler for supplying heating steam to the reproduction tower of the carbon dioxide separation and capture unit; a steam pipe for supplying steam flowing down through the back-pressure turbine of the fossil fuel combustion thermal power system to the reboiler as a heat source; an emergency relief pipe interconnected to the extraction pipe for supplying the extraction steam extracted from the high-pressure turbine of the fossil fuel combustion thermal power system to the back-pressure turbine for permitting the extraction steam flowing down through the extraction pipe to bypass the back-pressure turbine and flow down to a condenser; and an emergency relief valve installed on the emergency relief pipe for controlling flow of the extraction steam through the emergency relief pipe.
    • 8. 发明专利
    • GASIFICATION POWER GENERATION SYSTEM PROVIDED WITH CARBON DIOXIDE SEPARATION AND RECOVERY DEVICE
    • CA2720387A1
    • 2011-05-10
    • CA2720387
    • 2010-11-08
    • HITACHI LTD
    • MISHIMA NOBUYOSHITAKEDA YASUSHIHOSOI KISHUFUKUHARA HIROTSUGU
    • C10J3/72C01B32/50
    • A gasification power generation system provided with a carbon dioxide separation and recovery device comprising: a carbon dioxide separation and recovery device having: a shift reactor to convert carbon monoxide contained in fuel gas into carbon dioxide by mixing steam into the fuel gas containing carbon monoxide and hydrogen to cause a shift reaction; a carbon dioxide absorption tower to produce fuel gas from which carbon dioxide has been removed by allowing an absorption liquid to absorb carbon dioxide from the fuel gas containing carbon dioxide flowing down the shift reactor; and an absorption liquid recycling device to recycle an absorption liquid by separating carbon dioxide absorbed by the absorption liquid in the carbon dioxide absorption tower; and a gasification power generation system having: a gas turbine device driven by burning the fuel gas from which carbon dioxide has been removed in the carbon dioxide absorption tower of the carbon dioxide separation and recovery device in a combustor; an exhaust heat recovery boiler having a drum to generate steam by an exhaust gas discharged from the gas turbine device; and a steam turbine driven by the steam generated by the drum of the exhaust heat recovery boiler; wherein an evaporator to generate steam heated by heat exchange with the fuel gas heated by shift reaction heat generated in the shift reactor of the carbon dioxide separation and recovery device is disposed downstream of the shift reactor, a steam line to supply a steam mixer disposed in a fuel gas line upstream of the shift reactor with the heated steam generated by the evaporator is provided, and the heated steam supplied through the steam line is allowed to flow from the steam mixer into the shift reactor as shift steam together with the fuel gas.