Abstract: A denitration device comprising a duct (22) that leads and distributes exhaust gas from a turbine (56) of a gas turbine (50) including a compressor (52) and the turbine (56), an ammonia injection grid (24) that sprays, into the duct (22), an mixed gas in which ammonia gas and dilution air are mixed with each other, and a denitration catalyst (26) that is installed on a downstream side of flow of the exhaust gas of the ammonia injection grid in the duct (22), and there is provided an air bleeding line (76) that is connected to a low compression portion of the compressor (52) of the gas turbine (50) and supplies air bled of the compressor (52) into the ammonia injection grid (24) as the dilution air.

Abstract: A denitration device comprising a duct (22) that leads and distributes exhaust gas from a turbine (56) of a gas turbine (50) including a compressor (52) and the turbine (56), an ammonia injection grid (24) that sprays, into the duct (22), an mixed gas in which ammonia gas and dilution air are mixed with each other, and a denitration catalyst (26) that is installed on a downstream side of flow of the exhaust gas of the ammonia injection grid in the duct (22), and there is provided an air bleeding line (76) that is connected to a low compression portion of the compressor (52) of the gas turbine (50) and supplies air bled of the compressor (52) into the ammonia injection grid (24) as the dilution air.

Abstract: An object of the present invention is to easily reduce dust having large particle diameter that affects blocking and abrasion to prevent deposition thereof in a reactor. An exhaust gas NOx removal apparatus comprises a NOx removal rector having a catalyst layer for removing nitrogen oxides in a combustion exhaust gas; a duct structure having a stab-up point at which a flow of the exhaust gas changes from a horizontal direction to a vertical direction in an exhaust gas duct on the upstream side of the NOx removal reactor; a tilt thin plate slit in which a number of thin plates are disposed in the duct of the horizontal direction of an inlet of the stub-up point or/and in an inlet of the catalyst layer in the NOx removal reactor in a vertical direction with a slit width smaller than an opening width of the catalyst layer at a predetermined inclination angle relative to the cross-section of an exhaust gas flow path; and a dust collecting/discharging portion attached to the lower end of a tilt thin plate slit.

Abstract: An object of the present invention is to easily reduce dust having large particle diameter that affects blocking and abrasion to prevent deposition thereof in a reactor. An exhaust gas NOx removal apparatus comprises a NOx removal rector having a catalyst layer for removing nitrogen oxides in a combustion exhaust gas; a duct structure having a stab-up point at which a flow of the exhaust gas changes from a horizontal direction to a vertical direction in an exhaust gas duct on the upstream side of the NOx removal reactor; a tilt thin plate slit in which a number of thin plates are disposed in the duct of the horizontal direction of an inlet of the stub-up point or/and in an inlet of the catalyst layer in the NOx removal reactor in a vertical direction with a slit width smaller than an opening width of the catalyst layer at a predetermined inclination angle relative to the cross-section of an exhaust gas flow path; and a dust collecting/discharging portion attached to the lower end of a tilt thin plate slit.