scholarly journals Low temperature SO sub 2 removal with solid sorbents in a Circulating Fluidized Bed Absorber

1992 ◽  
Author(s):  
S.K. Lee ◽  
T.C. Keener
Keyword(s):  
Low Temperature ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Solid Sorbents

scholarly journals Climate effect of an integrated wheat production and bioenergy system with Low Temperature Circulating Fluidized Bed gasifier

2015 ◽  
Vol 160 ◽  
pp. 511-520 ◽  
Author(s):  
Hafthor Ægir Sigurjonsson ◽  
Brian Elmegaard ◽  
Lasse Røngaard Clausen ◽  
Jesper Ahrenfeldt
Keyword(s):  
Low Temperature ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Climate Effect ◽  
Wheat Production ◽  
Fluidized Bed Gasifier

Pilot-Scale Study on Improving SNCR Denitrification Efficiency by Using Gas Additives

2018 ◽  
Vol 17 (3) ◽  
Author(s):  
Zhou Weiqing ◽  
Liu Meng ◽  
Huang Baohua ◽  
Qiu Xiaozhi
Keyword(s):  
Low Temperature ◽  
Fluidized Bed ◽  
Reaction Temperature ◽  
Temperature Region ◽  
Circulating Fluidized Bed ◽  
Catalytic Reduction ◽  
Pilot Scale ◽  
Incomplete Oxidation ◽  
Optimal Value

Abstract The experiment of improving Selective Non-Catalytic Reduction (SNCR) denitrification efficiency with gas additives (CH4 and C3H8) was carried out in the 50 kW circulating fluidized bed (CFB) pilot-scale equipment. The results show that the denitrification efficiency can reach 20 % when the reaction temperature is 650 °C, and the optimum mole ratio of C3H8/NH3 is 0.5. The denitrification efficiency can exceed 50 % when the mole ratio of C3H8/NH3 is 0.4 and the reaction temperature is 720 °C. However, the CH4 additive does not promote denitrification at this temperature. When the reaction temperature is 760 °C, the optimum denitrification efficiency of CH4 is 60 %, and the required CH4/NH3 is 0.8. Once the amount of CH4 exceeds the optimal value, the denitrification efficiency is suppressed. In addition, the concentrations of N2O and CO in the gas increase significantly with an increase of gas additives. Due to the incomplete oxidation of C3H8, a large amount of C2H4 is produced in the low-temperature region (< 750 °C) of SNCR.

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