CPFD study of a full-loop three-dimensional pilot-scale circulating fluidized bed based on EMMS drag model

2018 ◽  
Vol 323 ◽  
pp. 534-547 ◽  
Author(s):  
Qiuya Tu ◽  
Haigang Wang
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Three Dimensional ◽  
Pilot Scale ◽  
Drag Model

Cluster structure-dependent drag model for liquid–solid circulating fluidized bed

2015 ◽  
Vol 26 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Guodong Liu ◽  
Peng Wang ◽  
Fan Yu ◽  
Yanan Zhang ◽  
Wentao Guo ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Cluster Structure ◽  
Drag Model

Carbon dioxide purity and combustion characteristics of oxy firing compared to air firing in a pilot-scale circulating fluidized bed

Energy ◽  
2019 ◽  
Vol 166 ◽  
pp. 183-192 ◽  
Author(s):  
Ji-Hong Moon ◽  
Sung-Ho Jo ◽  
Sung Jin Park ◽  
Nguyen Hoang Khoi ◽  
Myung Won Seo ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Pilot Scale ◽  
Combustion Characteristics

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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