等离子烟气硫、硝、汞一体化脱除的中试研究
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摘要
利用自主研发的窄脉冲高压电源放电产生的等离子体对某燃煤电厂脱硫后烟气中的硫、硝、汞一体化脱除进行研究。结果表明:脉冲放电等离子体作用后烟气中的NO、SO_2和Hg~0浓度明显降低;喷水或喷雾对等离子脱除NO没有明显影响,而喷水时SO_2的脱除效率却有明显提高,但单独喷雾作用其也无明显变化;提高脉冲频率利于NO和SO_2的脱除;本文研究对脉冲放电等离子燃煤烟气脱硫脱硝工业化应用具有一定指导意义。
The simultaneous removal of sulfur,nitrate and mercury from coal-fired flue gas after desulfurization was studied through plasma through plasma produced by the narrow pulse high voltage discharge. The results showed that the concentration of NO,SO_2 and Hg~0 in flue gas was decreased obviously after pulsed discharge plasma. Water spraying or spraying had no obvious influence on the removal of NO under plasma treatment,but the removal efficiency of SO_2 was increased obviously when spraying water,and there was no changed under pure spraying. The increase of pulse frequency was beneficial to removal of NO and SO_2. This research had a guiding significant for industrial application of pulse discharge plasma on desulfurization and denitrification from flue gas.
The simultaneous removal of sulfur,nitrate and mercury from coal-fired flue gas after desulfurization was studied through plasma through plasma produced by the narrow pulse high voltage discharge. The results showed that the concentration of NO,SO_2 and Hg~0 in flue gas was decreased obviously after pulsed discharge plasma. Water spraying or spraying had no obvious influence on the removal of NO under plasma treatment,but the removal efficiency of SO_2 was increased obviously when spraying water,and there was no changed under pure spraying. The increase of pulse frequency was beneficial to removal of NO and SO_2. This research had a guiding significant for industrial application of pulse discharge plasma on desulfurization and denitrification from flue gas.
引文
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[3]Ighigeanua D,Martina D,Zissulescub E,et al.SO2and NOx removal by electron beam and electrical discharge induced non-thermal plasmas[J].Vacuum,2005,77(4):493-500.
[4]邰德荣,韩宾冰.电子束烟气脱硫技术工业示范工程进展[J].环境科学进展,1999,7(2):125-135.
[5]Mizuno A,Clements J S,Davis R H.A Method for the Removal of Sulfur Dioxide from Exhaust Gas Utilizing Pulsed Streamer Corona for Electron Energization[J].IEEE Trans Ind Appli.,1986,IA-22(3):516-522.
[6]陈伟华,任先文,王保健,等.脉冲放电等离子体烟气脱硫脱硝工业试验研究[J].环境污染治理技术与设备,2006,7(9):21-26.
[7]Chang J S,Urashim K,Tong Y X,et al.Simultaneous removal of NOx and SO2from coal boiler flue gases by DC corona discharge ammonia radical shower systems:pilot plant tests[J].International Conference on Applied Electrostatics,2001,57(3-4):313-323.
[8]段钰锋,江贻满,杨立国,等.循环流化床锅炉汞排放和吸附实验研究[J].中国电机工程学报,2008,28(32):1-5.
[9]Obradovic B M,Sretenovic G B,Kuraica M M.A dual-use of DBD plasma for simultaneous NOx and SO2removal from coal-combustion flue gas[J].Journal of Hazardous Materials,2011,185(2-3):1280-1286.
[10]Xu F,Luo Z Y,Cao W,et al.Simultaneous oxidation of NO,SO2and Hg0from flue gas by pulsed corona discharge[J].Journal of Environmental Sciences,2009,21(3):328-332.
[2]Wang W C,Zhao Z B,Liu F,et al.Study of NO/NOx removal from flue gas contained fly ash and water vapor by pulsed corona discharge[J].Journal of Electrostatics,2005,63(2):155-164.
[3]Ighigeanua D,Martina D,Zissulescub E,et al.SO2and NOx removal by electron beam and electrical discharge induced non-thermal plasmas[J].Vacuum,2005,77(4):493-500.
[4]邰德荣,韩宾冰.电子束烟气脱硫技术工业示范工程进展[J].环境科学进展,1999,7(2):125-135.
[5]Mizuno A,Clements J S,Davis R H.A Method for the Removal of Sulfur Dioxide from Exhaust Gas Utilizing Pulsed Streamer Corona for Electron Energization[J].IEEE Trans Ind Appli.,1986,IA-22(3):516-522.
[6]陈伟华,任先文,王保健,等.脉冲放电等离子体烟气脱硫脱硝工业试验研究[J].环境污染治理技术与设备,2006,7(9):21-26.
[7]Chang J S,Urashim K,Tong Y X,et al.Simultaneous removal of NOx and SO2from coal boiler flue gases by DC corona discharge ammonia radical shower systems:pilot plant tests[J].International Conference on Applied Electrostatics,2001,57(3-4):313-323.
[8]段钰锋,江贻满,杨立国,等.循环流化床锅炉汞排放和吸附实验研究[J].中国电机工程学报,2008,28(32):1-5.
[9]Obradovic B M,Sretenovic G B,Kuraica M M.A dual-use of DBD plasma for simultaneous NOx and SO2removal from coal-combustion flue gas[J].Journal of Hazardous Materials,2011,185(2-3):1280-1286.
[10]Xu F,Luo Z Y,Cao W,et al.Simultaneous oxidation of NO,SO2and Hg0from flue gas by pulsed corona discharge[J].Journal of Environmental Sciences,2009,21(3):328-332.