NOx removal by selective noncatalytic reduction with urea solution in a fluidized bed reactor

1999 ◽  
Vol 16 (5) ◽  
pp. 614-617 ◽  
Author(s):  
Sang Mun Jeong ◽  
Sang Done Kim
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Urea Solution ◽  
Nox Removal ◽  
Selective Noncatalytic Reduction ◽  
Noncatalytic Reduction

scholarly journals Numerical Study on the Denitrification Efficiency of Selective Noncatalytic Reduction Technology in Decomposing Furnace

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Shunsheng Xu ◽  
Jiazhen He ◽  
Fei Pei ◽  
Kun Li ◽  
Lele Liu ◽  
...  
Keyword(s):  
Numerical Study ◽  
Ammonia Nitrogen ◽  
Molar Ratio ◽  
Urea Solution ◽  
Injection Velocity ◽  
Cement Kiln ◽  
Dry Process ◽  
Optimal Injection ◽  
Selective Noncatalytic Reduction ◽  
Noncatalytic Reduction

In order to reduce the nitrogen oxide emission of cement plant, the denitrification of decomposing furnace is studied in this paper. Based on Fluent software platform, the 2500 t/d new dry-process cement kiln decomposing furnace of a plant is modeled and simulated by using air fractional combustion technology combined with selective noncatalytic reduction technology. The model and simulation methods are verified by the field test. The effects of the urea injection position and ammonia-nitrogen molar ratio on NO, NH3, and denitrification efficiency are studied by numerical simulation. The results show that the optimal injection position of the urea solution is 12 m, the optimal ammonia/nitrogen molar ratio is 1.8, and the optimal injection velocity of the urea solution is 40 m/s. The simulation results obtained under the optimal parameters are as follows: NO concentration is 187.60 mg/m3, NH3 escape is 32.40 mg/m3, and denitrification efficiency is 74.75%.

Influence of additives on selective noncatalytic reduction of nitric oxide with ammonia in circulating fluidized bed boilers

1991 ◽  
Vol 30 (11) ◽  
pp. 2396-2404 ◽  
Author(s):  
Bo Leckner ◽  
Maria Karlsson ◽  
Kim Dam-Johansen ◽  
Claus Erik Weinell ◽  
Pia Kilpinen ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Selective Noncatalytic Reduction ◽  
Fluidized Bed Boilers ◽  
Noncatalytic Reduction

Simultaneous SOx /NOx removal in a fluidized bed reactor using natural manganese ore

2001 ◽  
Vol 76 (10) ◽  
pp. 1080-1084 ◽  
Author(s):  
Soon Kwan Jeong ◽  
Tae Sung Park ◽  
Sung Chang Hong
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactor ◽  
Manganese Ore ◽  
Nox Removal

Removal of microcystin-LR from drinking water with TiO2-coated activated carbon

2004 ◽  
Vol 4 (5-6) ◽  
pp. 21-28
Author(s):  
S.-C. Kim ◽  
D.-K. Lee
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Synergistic Effect ◽  
Fluidized Bed ◽  
Continuous Flow ◽  
High Surface ◽  
High Surface Area ◽  
Fluidized Bed Reactor ◽  
Exterior Surface ◽  
Tio2 Particles

TiO2-coated granular activated carbon was employed for the removal of toxic microcystin-LR from water. High surface area of the activated carbon provided sites for the adsorption of microcystin-LR, and the adsorbed microcystin-LR migrated continuously onto the surface of TiO2 particles which located mainly at the exterior surface in the vicinity of the entrances of the macropores of the activated carbon. The migrated microcystin-LR was finally degraded into nontoxic products and CO2 very quickly. These combined roles of the activated carbon and TiO2 showed a synergistic effect on the efficient degradation of toxic microcystin-LR. A continuous flow fluidized bed reactor with the TiO2-coated activated carbon could successfully be employed for the efficient photocatalytic of microcystin-LR.

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