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Use of Sodium Bicarbonate for Flue Gas Treatment in Small Scale.
Zach, Boleslav ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Václavková, Šárka ; Moško, Jaroslav ; Brynda, Jiří ; Punčochář, Miroslav
The trend of reduction of landfilling can lead, especially in areas with low population density, to the need to build new waste-to-energy capacities in the form of small units. However, flue gas treatment in small scale has to be sufficiently simple to decrease capital costs and allow the construction of such facilities. For that reason, the possibility of one-step dry flue gas treatment at compromise conditions was investigated as well as the limitation of flue gas composition.\n\n
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Fluidized-bed Combustion of Dry Stabilized Sewage Sludge in Oxy-fuel Mode
Moško, Jaroslav ; Pohořelý, Michael ; Durda, Tomáš ; Zach, Boleslav ; Šyc, Michal ; Svoboda, Karel
Sewage sludge is an inevitable waste stream from wastewater treatment and its disposal is complicated due to specific characteristics of its composition. Sewage sludge combustion/incineration is the only suitable way for disposal of large volumes of sewage sludge containing POPs and some heavy metals. Sewage sludge combustion reduces the volume of such waste and causes destruction of organic contaminants. Oxy-fuel combustion is a technology for simplifying CO2 sequestration from the flue gas by using nearly pure oxygen instead of air for the combustion. In order to control the combustion temperature, part of the flue gas is recycled to combustion chamber. The paper brings information about investigation of the effects of combustion temperature and concentration of oxygen in inlet combustion media on the emissions of NOx, N2O and SO2 in FB combustion of sewage sludge. The experimental results have shown that an increase in combustion temperature leads to an increase in NOx and to a decrease in N2O emissions in the temperature range 750–930 °C. The lowest SO2 emissions were measured in the temperature interval from 800 to 820 °C in all experiments with different oxygen concentration in inlet gas. It was found that when the oxygen concentration in inlet gas increased, the emissions of SO2 increased while emissions of NOx slightly decreased.
Fulltext: content.csg - PDF
Plný tet: SKMBT_C22016112214480 - PDF
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