Research and Governance on Catalyst Abrasion for Selective Catalytic Reduction (SCR) System in Power Plant Boiler

2014 ◽  
Vol 1023 ◽  
pp. 125-131
Author(s):  
Li Ming Ren ◽  
Lei Wang ◽  
Chun Yu Wang ◽  
Jing Xue An
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Field Experiment ◽  
Selective Catalytic Reduction ◽  
Flue Gas ◽  
Preliminary Analysis ◽  
Catalytic Reduction ◽  
Power Plant Boiler ◽  
Scr System ◽  
Plant Boiler

This paper presents a research on the problem of catalyst failure in a selective catalytic reduction (SCR) system. The preliminary analysis indicates that the catalyst failure is caused by abrasion. For this, firstly, the mechanism of abrasion is analyzed through a field experiment. Secondly, according to the results from the field experiment, a scheme is put forward to optimize the flow field. Finally, the application results show that the uniformity of fly ash distribution in the flue gas are improved prominently, the reliability of the SCR system is enhanced at the same time.

scholarly journals Intelligent monitoring system of unburned carbon of fly ash for coal fired power plant boiler

2017 ◽  
Vol 131 ◽  
pp. 02003
Author(s):  
Pogganeswaran Gurusingam ◽  
Firas Basim Ismail ◽  
Prem Gunnasegaran ◽  
Taneshwaren Sundaram
Keyword(s):  
Fly Ash ◽  
Power Plant ◽  
Monitoring System ◽  
Unburned Carbon ◽  
Intelligent Monitoring ◽  
Power Plant Boiler ◽  
Plant Boiler

The Discharge Status and Technical Analysis of NOX of Thermal Power Plant Boiler

2014 ◽  
Vol 535 ◽  
pp. 131-134 ◽  
Author(s):  
Dong Yang ◽  
Qing Wen Chen
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Thermal Power Plant ◽  
Catalytic Reduction ◽  
Thermal Power ◽  
Combustion Technology ◽  
Discharge Status ◽  
Low Nox Combustion ◽  
Plant Boiler ◽  
Flue Gas Denitrification

NOXis one of the pollutants which will be key governanced by Government in Twelfth Five, and thermal power plant boiler is the main source of NOXin the atmospheric. Overview of the discharge status of NOXand the state-controlled status of the power plant NOXdischarge regulations with the latest standards, analysis of the current two thermal power plant NOXcontrol technology: low-NOx combustion technology and flue gas denitrification technology. Low NOx combustion technology introduces low excess air combustion technology, air staged combustion technology, flue gas recirculation technology, flue gas denitrification technology introduced four methods which is selective catalytic reduction, selective non-catalytic reduction, hybrid SNCR-SCR catalyst reduction combined metgod and wet NOXabsorption system, principle of denitration and their advantages and disadvantages of different methods are discussed. Finally a brief introduction of the difficulties of governance NOXand some necessary issues when select zhe control methods.

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.

Analysis of Flue-Gas Side Abrasion in Thermal Power Plant Boiler

2011 ◽  
Vol 418-420 ◽  
pp. 987-992
Author(s):  
Yong Yan Zhou ◽  
Yong Fu Zhao ◽  
Tian Sheng Chen ◽  
Guo Hua Lu
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Influence Factors ◽  
Power Plant Boiler ◽  
Prevention Methods ◽  
Plant Boiler

Several different kinds of flue-gas side abrasions occurred in thermal power plant were discussed. And the occurring positions, characteristics, influence factors as well as identification and prevention methods were also introduced in detail. So some advice may serve a reference for efficiently identificating and preventing boiler failure caused by flue-gas side abrasion.

Sign in / Sign up

Export Citation Format

Share Document