Abstract: A CO2 recovery system includes: a combustion facility; a CO2 absorption tower that brings an exhaust gas containing CO2, which is discharged from the combustion facility and introduced into the CO2 absorption tower, into contact with a CO2 absorption liquid to remove the CO2 from the exhaust gas; and a decarbonated gas introduction line that is connected to the CO2 absorption tower and the combustion facility and allows at least a portion of a decarbonated gas, which is the exhaust gas from which the CO2 has been removed in the CO2 absorption tower, to be introduced into the combustion facility.

Abstract: An exhaust gas treatment system includes: a dust collection facility that includes a denitration layer on which a denitration catalyst is carried and through which exhaust gas passes; a carbon dioxide recovery device that is positioned on a downstream side of the dust collection facility in a flow direction of the exhaust gas; a first heat recovery device that is positioned on an upstream side of the dust collection facility in the flow direction of the exhaust gas and that performs heat exchange between the exhaust gas and a heat medium; a sensor that includes a first thermometer capable of detecting a temperature of the exhaust gas flowing between the first heat recovery device and the dust collection facility, and a second thermometer capable of detecting a temperature of the exhaust gas flowing between the dust collection facility and the carbon dioxide recovery device; and a control device.

Abstract: A control device for a CO2 recovery device disposed on a downstream side of a combustion furnace that combusts a combustible material in which a biomass-derived combustible material and a non-biomass-derived combustible material are mixed and recovering CO2 in exhaust gas generated includes: a first acquisition unit that acquires a ratio of weights of the biomass-derived combustible material and the non-biomass-derived combustible material to a weight of the combustible material introduced into the combustion furnace; a first calculation unit that calculates a ratio of CO2 generated from the biomass-derived combustible material and the non-biomass-derived combustible material to CO2 generated from the combustible material in accordance with the acquired ratio; and a second calculation unit that calculates an intake amount of the exhaust gas to the CO2 recovery device based on the calculated ratio of the CO2 generated from the non-biomass-derived combustible material and a flow rate of the exhaust gas.

Abstract: A CO2 recovery system includes: a combustion facility; a CO2 absorption tower that brings an exhaust gas containing CO2, which is discharged from the combustion facility and introduced into the CO2 absorption tower, into contact with a CO2 absorption liquid to remove the CO2 from the exhaust gas; and a decarbonated gas introduction line that is connected to the CO2 absorption tower and the combustion facility and allows at least a portion of a decarbonated gas, which is the exhaust gas from which the CO2 has been removed in the CO2 absorption tower, to be introduced into the combustion facility.

Abstract: A CO2 recovery system includes: a combustion facility; a dust collector into which exhaust gas containing CO2, discharged from the combustion facility, is introduced, and which removes solid components from the exhaust gas; an exhaust gas cooling device into which the exhaust gas is introduced, and which cools the exhaust gas through contact with cooling water; a CO2 absorption tower into which the exhaust gas cooled by the exhaust gas cooling device is introduced, and which removes the CO2 from the exhaust gas in contact with a CO2 absorbent; and a cooling water introduction line which is-connected to the exhaust gas cooling device and to a supply site on an upstream side, in the flow of exhaust gas, of the dust collector, and which guides at least a portion of the cooling water inside the exhaust gas cooling device to the supply site.

Abstract: An analysis condition adjusting device of a fuel analyzer includes a first NOx computing unit for calculating a reference NOx estimation value using a previously obtained first industrial analysis value of a fuel sample, a second NOx computing unit for calculating a plurality of varied NOx estimation value by varying a value of each of components of the first industrial analysis value, a NOx error computing unit for computing an error as a NOx error between the reference NOx estimation value and each of the varied NOx estimation values, an analysis error tolerance range setting unit for setting an analysis error tolerance range of each of the components based on a value variation amount of each of the components, the value variation amount being defined such that the NOx error is within a tolerance range, and an analysis condition adjusting unit for adjusting an analysis condition of a fuel analyzer.

Abstract: An analysis condition adjusting device of a fuel analyzer includes a first NOx computing unit for calculating a reference NOx estimation value using a previously obtained first industrial analysis value of a fuel sample, a second NOx computing unit for calculating a plurality of varied NOx estimation value by varying a value of each of components of the first industrial analysis value, a NOx error computing unit for computing an error as a NOx error between the reference NOx estimation value and each of the varied NOx estimation values, an analysis error tolerance range setting unit for setting an analysis error tolerance range of each of the components based on a value variation amount of each of the components, the value variation amount being defined such that the NOx error is within a tolerance range, and an analysis condition adjusting unit for adjusting an analysis condition of a fuel analyzer.

Abstract: Provided is a reheat boiler in which the imbalance in temperature distribution of the temperature of the combustion gas at the outlet of a reheat furnace is reduced by changing the gas flow pattern in the reheat burner. A reheat boiler includes a main boiler configured such that main combustion gas generated in combustion in a burner flows from a furnace through a superheater and evaporator tubes, a reheat furnace that is disposed on the downstream of the evaporator tubes and produces reheat combustion gas by combustion in a reheat burner, and a reheater disposed above the reheat furnace. A closing plate, serving as a drift preventing portion, is provided at a reheat furnace outlet that connects the reheat furnace and the reheater to form a flow path for the combustion gas and the reheat combustion gas so as to narrow the cross-sectional area of the flow path for the combustion gas.

Abstract: Provided is a marine boiler structure that is capable of remedying non-uniformity in corrosion progression by making the temperature distribution of combustion gas that passes through a superheater uniform, and that is also capable of reducing the level of NOx contained in the combustion gas. In a marine boiler structure configured such that combustion gas generated by combustion in a burner flows from a furnace through a superheater and an evaporator tube bundle, a bottom air port that supplies part of the combustion air as bottom air from a furnace bottom portion of the furnace is provided, the bottom air port is positioned closer to the superheater relative to a burner center line, and an ejecting direction of the bottom air is set within a range inclining in the burner direction from the vertically upward direction.

Abstract: A reheat boiler according to the present invention includes a main boiler configured to make combustion gas originating from combustion in a burner flow from a furnace (102) and pass through a super heater and an evaporation tube bank, a reheat furnace (108) including a reheat burner (107) provided downstream of the evaporation tube bank, and a reheater (109) provided on the upper side of the reheat furnace (108), and also includes a combustion air supply portion (12) that is provided at a position opposite to the reheat burner (107) in the reheat furnace (108) to supply a part of the combustion air as combustion air (11b). By making combustion gas (107a) and the combustion air (11b) collide head-on to facilitate mixing of the combustion gas (107a) with the combustion air (11b), the flow patterns of the combustion gas are changed, whereby temperature unevenness of the combustion gas (107a) at the outlet of the reheat furnace (108) is reduced.

Abstract: A boiler according to the present invention is a boiler configured to make combustion gas originating from combustion in a burner (101) flow from a furnace (102) and pass through a super heater (SH) (104) and an evaporation tube bank (105). The boiler includes a downstream shield plate (11A) that is slidable in the vertical direction of the super heater (104) at a position downstream of the combustion gas flowing above the super heater (104), thereby regulating the flow rate of combustion gas entering the upper space A of the super heater (104). By regulating the flow rate of bypass gas (12) with the downstream shield plate (11A) and in turn regulating the flow rate of mainstream gas (13), the temperature of steam output from the super heater (104) is controlled.