Improvement of ammonia mixing in an industrial scale selective catalytic reduction De-NOx system of a coal-fired power plant: A numerical analysis

2021 ◽  
Vol 147 ◽  
pp. 334-345
Author(s):  
Jungho Sohn ◽  
In Sik Hwang ◽  
Jungho Hwang
Keyword(s):  
Numerical Analysis ◽  
Power Plant ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Industrial Scale

Numerical analysis of ammonia homogenization for selective catalytic reduction application

2017 ◽  
Vol 203 ◽  
pp. 1047-1061 ◽  
Author(s):  
Jakov Baleta ◽  
Matija Martinjak ◽  
Milan Vujanović ◽  
Klaus Pachler ◽  
Jin Wang ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction

Selective Catalytic Reduction (SCR) System Installation and Commissioning at the Chow II Power Plant in Chowchilla, California

2003 ◽  
Author(s):  
Don Newburry ◽  
Pat Runnels ◽  
Mike Owings
Keyword(s):  
Power Plant ◽  
Natural Gas ◽  
Selective Catalytic Reduction ◽  
High Efficiency ◽  
Catalytic Reduction ◽  
Industrial Applications ◽  
Urea Solution ◽  
Lean Burn ◽  
High Oxygen Content ◽  
Scr System

Lean burn, natural gas, reciprocating engines are becoming widely utilized for stationary industrial applications due to their high efficiency and low emissions. However, despite the low engine emissions, some locations still require exhaust after-treatment to meet the local emissions requirements. Due to the high oxygen content (greater than 4%) in the exhaust of lean burn engines, 3-Way (non-selective) catalysts are not suitable to reduce NOx. Selective catalytic reduction (SCR), which utilizes a consumable reductant to reduce NOx over a catalyst, is very effective at reducing NOx and is becoming an accepted technology for large, stationary engine applications. In the summer of 2001, Stewart & Stevenson installed 16 Deutz TGB632V16 natural gas fired engines for NEO Corporation at the Chow II power plant. MIRATECH SCR provided and commissioned 16 selective catalytic reduction systems for these engines using a 40% urea solution as the reductant. This paper describes the installed SCR systems and reports some of the emissions testing results and costs. With the SCR systems in place, the engines were successfully able to meet the permitted exhaust emissions requirements of 0.07 g/bhp-hr of NOx, 0.1 g/bhp-hr of CO, and 0.15 g/bhp-hr of VOC’s (volatile organic compounds) with less than 10 ppmvd of ammonia slip @ 15% O2. Additional measurements were made of formaldehyde and acrolein. Very low levels of these emissions were found after the SCR.

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