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Research on products of simultaneous removal of SO2 and NOx from flue gas by ozonation and alkaline absorption

Głomba M., Hałat A., Kordylewski W., Łuszkiewicz D.

Environment Protection Engineering

2016

Vol. 42, nr 2

125--136

The results of laboratory scale research have been presented on the effects of ozonation of carrier gas containing NOx and SO2 on by-products trapped in Dreschel washers with solution of sodium hydroxide. The controlling parameter in this process was the ozonation intensity determined by the molar ratio O3/NOx. The measured by-products in a scrubber were SO32- , SO42- , NO2- and NO3- ions. It has been shown that ozonation of flue gas favours oidation of nitrites to nitrates and sulfites to sulfates in alkaline solution. Some of these results were confirmed in a pilot scale studies. Pilot plant was located in Wroclaw CHP (Combined Heat and Power), which provided flue gas for testing at a rate of 200 m3/h from the OP-430 boiler. Exhaust gases were ozonized and captured simultaneously with SO2. Sodium hydroxide was used in a pilot scale as an absorbent.

Simultaneous removal of NOx, SO2, CO and Hg from flue gas by ozonation. Pilot plant studies

Głomba M., Kordylewski W.

Environment Protection Engineering

2014

Vol. 40, nr 3

113--125

The results of pilot plant investigations of simultaneous removal of NOx, SO2 and Hg from flue gas with ozone as the oxidizing agent and the spray tower absorber with NaOH solution as the absorbent have been presented. Flue gas was delivered into the pilot plant at the flow rate of 200 m3/h from the coal fired OP-430 boiler. The effectiveness of NOx removal was over 95% when the molar ratio O3/NO reached 2.0. Sulfur dioxide was practically completely washed out from flue gas in the absorber at the liquid-to-gas ratio 7.5 dm3/m3. The effectiveness of Hg removal in the studied system was approximately 80%. It was pointed out that CO concentration in flue gas could considerably increase the ozone consumption. The effect of carbon dioxide in flue gas on the chemistry of absorption due to hydroxides conversion into carbonates and bicarbonates was noticed.

Smart metering w energetyce

Rutkowski W.

Wiadomości Elektrotechniczne

2012

R. 80, nr 5

37-39

Przedstawiono koncepcję inteligentnego opomiarowania odbiorców energii elektrycznej przez operatora systemu dystrybucyjnego oraz korzyści dla beneficjentów tego systemu pomiarowego.

The paper presents an idea of smart measurement system for electric energy consumers realized by distribution system operator. Benefits of the system are given.