摘要:
The air pollution control device includes: NH4Cl solution supply means 16 for spraying an NH4Cl solution 14 by a plurality of spray nozzles 15 into a flue gas duct 13 at the downstream of the boiler 11; a reduction-denitration device 18 including a denitration catalyst for reducing NOx in the flue gas 12 with NH3 and for oxidizing Hg under the coexistence with HCl; and a wet desulfurization device 22 for reducing the amount of Hg oxidized in the reduction-denitration device 18 by using a limestone-gypsum slurry 21. The NH4Cl solution supply means 16 supplies the NH4Cl solution 14 from the spray nozzles 15 so as to prevent the NH4Cl solution 14 from being adhered to an inner wall of the flue gas duct 13 through which the flue gas 12 is flowing.
摘要:
An air pollution control device is an air pollution control device for reducing the amounts of NOx and Hg contained in flue gas 12 from a boiler 11. The air pollution control device includes: NH4Cl solution supply means 16 for spraying an NH4Cl solution 14 by a spray nozzle 15 into a flue gas duct 13 at the downstream of the boiler 11; a mixer 17 provided on the downstream side of a region where NH4Cl is gasified, for promoting mixing, with the flue gas 12, HCl and NH3 which are generated when NH4Cl is gasified; a reduction-denitration device 18 including a denitration catalyst for reducing NOx in the flue gas 12 with NH3 and for oxidizing Hg under the coexistence with HCl; and a wet desulfurization device 22 for reducing the amount of Hg oxidized in the reduction-denitration device 18 using a limestone-gypsum slurry 21.
摘要:
The air pollution control device includes: NH4Cl solution supply means 16 for spraying an NH4Cl solution 14 by a plurality of spray nozzles 15 into a flue gas duct 13 at the downstream of the boiler 11; a reduction-denitration device 18 including a denitration catalyst for reducing NOx in the flue gas 12 with NH3 and for oxidizing Hg under the coexistence with HCl; and a wet desulfurization device 22 for reducing the amount of Hg oxidized in the reduction-denitration device 18 by using a limestone-gypsum slurry 21. The NH4Cl solution supply means 16 supplies the NH4Cl solution 14 from the spray nozzles 15 so as to prevent the NH4Cl solution 14 from being adhered to an inner wall of the flue gas duct 13 through which the flue gas 12 is flowing.
摘要:
An air pollution control apparatus includes at least one denitration catalyst layer for reducing the amounts of nitrogen oxides in flue gas from a boiler and oxidizing mercury with hydrogen chloride sprayed into the flue gas. Spraying pipe headers 51 are disposed in a flue gas duct 19. The spraying pipe headers 51 are inserted into the flue gas duct 19 and arranged in a direction orthogonal to the direction of a gas flow in the flue gas duct 19. At least four spray nozzles 52-1 to 52-4 are disposed on the spraying pipe header 51 to form a vertical vortex flow 53 in the gas flow direction. The diffusion of hydrogen chloride is thereby facilitated in a rapid manner. Therefore, the number of the nozzles can be reduced, and the uniformity of the concentration of hydrogen chloride at the location of the catalyst can be ensured even when the spacing between the nozzles is increased.
摘要:
An air pollution control apparatus 10 according to an embodiment of the present invention has a denitration catalyst layer 13 that removes nitrogen oxides in flue gas, and atomizes hydrochloric acid into flue gas to oxidize mercury, and also includes a swirling-flow generating member 15A including a vertical axis 22 provided in a passage 14 of a honeycomb catalyst, and four swirling-flow generating vanes 23 provided radially with respect to the vertical axis 22 for generating a turbulent flow in flue gas, with the swirling-flow generating vanes 23 being arranged in a direction of the vertical axis 22 with a predetermined gap therebetween. With this configuration, by generating a swirling flow in flue gas in the passage 14 in the denitration catalyst layer 13, a contact time between flue gas and a denitration catalyst can be increased, and the oxidation reaction efficiency between mercury in flue gas and the denitration catalyst can be improved.
摘要:
An air pollution control apparatus 10 according to an embodiment of the present invention has a denitration catalyst layer 13 that removes NOx in flue gas 12, and atomizes HCl into the flue gas 12 to oxidize Hg, and also includes a swirling-flow generating member 30A that includes a swirling-flow generating-member body being partitioned to correspond to each passage of the denitration catalyst layer 13 and a plurality of swirling-flow generating vanes arranged on the partition inner walls to generate a turbulent flow, on an inlet 13a side of the denitration catalyst layer 13. With this configuration, a laminar flow of the flue gas 12 in a flue gas duct 19 is changed to a swirling flow, thereby enabling to increase a contact time between the flue gas 12 and a denitration catalyst and to improve the oxidation reaction efficiency between Hg in the flue gas 12 and the denitration catalyst.
摘要:
There is provided a panel structure for an electronic apparatus that is capable of exhibiting two types of design images. During daytime hours for example, a design-applied portion of a panel main body can be visually recognized through a panel made of a light transmitting material. During nighttime hours for example, when light is conducted from one X direction-wise end to the other x direction-wise end in the panel, as well as from the other x direction-wise end to one X direction-wise end in the panel 1, the design-applied portion is shielded with the light illuminating the panel. In this way, by making a difference between the daytime visual impression and the nighttime visual impression of the panel, it is possible to impart two types of design images to the panel structure.
摘要:
A printer with a main body having a printing head, motors, a plurality of circuits driving the printing head and the motors, a processor and a random access memory. The printer also includes a cartridge for containing memory devices for storing the data for at least one character font set and for storing the printing operation control program. A connector removably connects the cartridge mechanically and electrically to the main body of the printer. As a result, the print operation control program and character font set data can be selectively set by connecting an appropriate cartridge to the main body of the printer.
摘要:
A printer with a main body having a printing head, motors, a plurality of circuits driving the printing head and the motors, a processor and a random access memory. The printer also includes a cartridge for containing memory devices for storing the data for at least one character font set and for storing the printing operation control program. A connector removably connects the cartridge mechanically and electrically to the main body of the printer. As a result, the print operation control program and character font set data can be selectively set by connecting an appropriate cartridge to the main body of the printer.