Showing papers on "Spray tower published in 1992"

Biological treatment of waste gases containing poorly-water-soluble pollutants

Abstract: In order to remove small amounts of poorly-water soluble pollutants from a large volume of waste gas, a new system is proposed: the combination spray tower/liquid-impelled loop reactor (LLR). In this system a water-immiscible organic liquid with a high solvent capacity for the pollutant is recycled between absorber and bioreactor. The latter is designed as a liquid-impelled loop reactor, a new type of liquid/liquid contactor. The three-phase design employed here will be compared to a direct gas/water transfer system (two-phase design).

Experimental study of absorption of carbon dioxide from carbon dioxide-air gas mixture by water spray

Abstract: The purpose of the work is to make an experimental approach to absorption of CO 2 from CO 2 -air mixture by water spray

Coal burning flue gas purifier

Abstract: The utility model relates to a coal burning flue gas purifier, comprising a water bath pond, a spray tower and an absorption tower which are erected in the water bath pond. The upper part of the spray tower is provided with a spray pipe and a gas inlet, flue gas entered into the tower is fluently entered into the water bath pond under the action of water sprayed from the spray pipe. The absorption tower is provided with a plurality of cyclones, and rising mixed gas and water moves in rotation mode via the cyclones, which makes the water and gas be separated; purified gas is exhausted through a draught fan. The dust removing efficiency of the purifier reaches as high as 99.5%, and the sulfur dioxide removing efficiency can reach more than 80%.

Dry exhaust gas treatment apparatus of waste refuse incinerator

Abstract: PURPOSE:To remove adsorptively soot, hydrogen cloride, hydrogen fluoride, NOx, SOx, dioxin or heavy metals from the exhaust gas of a waste refuse incinerator by simultaneously treating them. CONSTITUTION:Exhaust gas is introduced into the lower part of a spray tower 10 having an inclined multistage louver tray 20 arranged thereto from an exhaust gas inlet 14 while powdery activated carbon C is supplied to the upper part of the spray tower 10 from an activated carbon supply port 18. Activated carbon C is blown up by the exhaust gas blown off upwardly through the multistage louver tray 20 to be fluidized to repeat the contact with the exhaust gas in a fluidized state and performs the adsorptive removal of harmful substances. The purified exhaust gas is discharged to a flue from an exhaust outlet 16. The used activated carbon is sent to a desorbing tower 12 from the lower end of the spray tower 10 and dust is removed by a carbon separator 28 and supplied to the supply port 18 if necessary to be recirculated and reused.

Process and installation for treating waste liquids, in particular industrial waste water with a high solids content

Abstract: The present invention refers to a method and an apparatus for processing waste liquid, in particular industrial waste water of high solids content, characterized by the following steps: a) spraying and evaporating the waste liquid together with a dry gas, in particular dry air in a counterflow of dry gas, in particular dry air in a spray tower, b) collecting the solids of the waste water in a lower section of the spray tower, c) discharging the moist gas from an upper section of the spray tower and bringing the moist gas in heat exchange with an evaporator of a refrigerating means,wherein the liquid condensed from the evaporator is collected, d) bringing the cooled dry gas in heat exchange with the condensor of said refrigerating means, and e) returning the heated dry gas in a closed loop to the method step a)

Process for making asphalt mixtures with a drying and heating drum placed above the mixing unit and supplementary process for the cooling and washing of exhaust gases

Abstract: The invention relates to a process for making asphalt mixtures with a drying and heating drum (12) placed above the mixing tower and is characterised in that the throughput of pure mineral materials is 100% of the drum capacity or, optionally, depending on the proportion of mineral materials, falling from 100%, contains as much granulated asphalt as desired. The supplement to the process for making asphalt mixtures with a drying and heating drum (12) placed above the mixing tower for the part object of cooling and washing the exit gas provides that the cooling by the heating water for the mineral materials is effected in a closed system by a gas heat exchanger (14) and a spray cooler (14) for further cooling and/or condensation and washing-out of the exit gases is arranged in the form of a spray tower downstream of this exchanger, and the water heated here to 80-90 DEG C is added via a water/water heat exchanger to the cooled heating water coming back from the mineral silos (21) and is then passed through the gas/water heat exchanger.