Showing papers on "Spray tower published in 1979"

Apparatus for cleaning waste flue gases

Abstract: A waste flue gas cleaning method and an apparatus for practicing said method, in which a reactant solution is sprayed into a waste flue gas introduced into a spray tower, whereby a toxic component in the flue gas is caused to be absorbed in and react with the droplets of the sprayed reactant solution, and the water contained in the droplets is vaporized and the reaction products are dried into solid particles by the sensible heat of said flue gas. A series of the above operation is accomplished within the spray tower while maintaining the outlet gas temperature always above the dew point of the flue gas, and the solid particles of the reaction products are removed from the flue gas by an after dust collector.

Multistage spray tower

Abstract: PURPOSE:To provide a dead space-free high performance multistage spray tower is provided with a pressure spray nozzle in the top and second spray chamber and a gravity spray nozzle for jetting a liquid received into a collector around each spray chamber into the everyother obe stage chamber. CONSTITUTION:A gas is introduced into a spray tower main body 11 from the lower part 8 thereof and ascends through a distributer 15. A liquid is sprayed into the gas from the top of the tower and spray nozzles 12 and 12' underthereof with the pump pressure. The liquid sprayed from the nozzle 12 is recovered by a liquid collector 14 around the nozzle 12' and introduced into a gravity spray nozzle 13, which is located as the third stage from the top, through an outer pipe 17 for respraying into the gas. The liquid from the nozzle 12' is sprayed from a nozzle 13' again by gravity through a collector 14'. The collectors 14 and 14' are so shaped as to serve as a gas baffle, concurrently.

Wet desulfurizing apparatus

Abstract: PURPOSE:To maintain the desulfurizing performance of the title apparatus high without causing deflection of exhaust gas in the absorption tower regardless of fluctuations in vol of exhaust gas by regulating the flow of exhaust gas through a dispersing plate and by contacting the gas to an absorbing soln sprayed into the tower CONSTITUTION:SOx-contg exhaust gas is introduced into spray tower 7 from gas inlet duct 1 and passed through gas dispersing porous plate 10 such as unglazed porous plate to make the gas flow rate uniform Next the gas passed through plate 10 is contacted to an absorbing slurry sprayed from nozzles 2 through spray piping 3 to desulfurize the gas, and the desulfurized gas is passed through upper mist catcher 4 in tower 7 to remove accompanying mist and exhausted 5 from the system In this wet desulfurizing apparatus the sprayed slurry is held on plate 10 with gas currents blown up from the lower part of plate 10, the slurry is fluidized to accelerate reaction, and the flow rate of gas can be made uniform

Method and apparatus for treating flue gases

Abstract: A method and apparatus fortreating the flue gas, which is produced as a by-product of the combustion process that takes place during the course of the operation of a fossil fuel-fired steam generation unit. In accordance with the subject method and apparatus, the flue gas is made to pass through an air quality control system embodying a particular arrangement of scrubber means and spray tower means, before the flue gas is released to the atmosphere. The treatment of the flue gas consists of feeding the flue gas (14) to the inlet (12) of the air quality control system (1e), passing the flue gas through spray tower means (22) to effect the removal of sulfur therefrom, effecting a first change in the direction of flow of the flue gas through the air quality control system, effecting a second change in the direction of flow of the flue gas through the air quality control system, passing the flue gas through rod scrubber means (40) to effect the removal of entrained particulates therefrom, from the rod scrubber means passing the flue gas through a dropout section (36) to encourage agglomerates to fall out, effecting a third change in the direction of the flue gas through the air quality control system, passing the flue gas through a bulk entrainment separator and demister means (48) to effect the removal of entrained fine water droplets therefrom, and exhausting the flue gas from the air quality control system (50).

Gassliquid contact apparatus

Abstract: PURPOSE:To eliminate the inclination of gas flow and to improve the gas-liquid contact efficiency and also, to simplify the above mentioned apparatus, by making turning direction of misty liquid from spray nozzle different in every step, at the multistage gas-liquid contact apparatus jetting the liquid. CONSTITUTION:Flowing of the gas A passing through misty liquid, is highly disturbed and gas-liquid contact efficiency is improved, by making turning direction of misty liquid jetting from the spray nozzle 21-25 provided with the spray tower 1 in multistage to the left turning in the nozzle 21, 23, 25 (the arrow mark B) and in the nozzle 22, 24 to the right turning (the arrow mark C). There is no necessity for providing rectifying board etc. for eliminating gas inclination as usual method and the draft loss is decreased and also, the apparatus is able to simplify.