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

Sohn, Jung-Ho; Hwang, In Sik; Hwang, Jungho

doi:10.1016/j.psep.2020.09.043

Cited by 16 publications

(2 citation statements)

References 19 publications

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“…Release of NOx among these gases has a significant impact on environmental degradation. The cause of NOx pollution is automotive exhausts, exhaust gases generated in industries like turbines, power plants and cement kilns (Amoatey et al 2019, Sohn et al 2021. When combustion occurs at high temperature, NOx is likely to be formed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis And Parameter Optimization On The Reduction of NOx From Diesel Engine Using RSM And ANN Model

Chenniappan

Ramya²,

Rajoo

et al. 2021

Preprint

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The feasibility of the Non-thermal Plasma (NTP) process is examined by four operating parameters including NOx concentration (300-400 ppm), gas flow rate (2-6 lpm), voltage (20-30 kV) and electrode gap (3-5 mm) using a Dielectric Barrier Discharge (DBD) reactor for removing NOx from diesel engine exhaust. Based on the NTP study, the NOx removal efficiency and energy efficiency of the NTP reactor are measured. Optimization of process parameters have been carried out using response surface-based Box Behnken Design (BBD) method and Artificial Neural Network (ANN) method. ANN based optimization is carried out using feed-forward network algorithm which has 4 input nodes, 10 hidden nodes and 2 output nodes. Based on the RSM and ANN model study, R2 value are obtained as 0.98 and 0.99 respectively. These models demonstrates that they have strong agreement with the experimental results. The results are indicated that the RSM model's optimum conditions resulted in a maximum NOx reduction of 60.5% and an energy efficiency of 66.24 g/J. The comparison between the two models confirmed the findings, whereas this ANN model displayed a stronger correlation to the experimental evidence.

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Section: Introductionmentioning

confidence: 99%

Experimental Analysis And Parameter Optimization On The Reduction of NOx From Diesel Engine Using RSM And ANN Model

Chenniappan

Ramya²,

Rajoo

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…While convincing test data have shown that the construction of physical models is an adequate way to achieve this goal, some drawbacks, such as high cost and large space demand, have motivated researchers to develop an alternative method [4]. Numerical modeling is attracting increasing attention, with merits including satisfactory flexibility and low cost [5,6]. Provided that the simulation models are appropriately set up and selected, the calculated results can also accurately reflect fluid flow information in actual systems.…”

Section: Introductionmentioning

confidence: 99%

Optimizing flow field in an SCR system of a 600 MW power plant: effects of static mixer alignment style

Yao

Wang

et al. 2021

Waste Dispos. Sustain. Energy

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The fluid flow in a selective catalytic reduction (SCR) system of a 600 MW power station is optimized using the numerical simulation method in this work. Given that guide plates and straightening gratings are properly installed, the relative standard deviation (C v ) of velocity related to the inlet of an ammonia injection grid (AIG) and catalysts satisfy the engineering demand of <15%, suggesting that a relatively uniform velocity field is obtained. The in-line arrangement of static mixers strengthens the disturbance of fluid, promoting the mixing of reductant NH 3 with flue gas. The NH 3 mole fraction C v value correlated to the inlet of catalysts drops to ca. 3.5%, which is lower than that in the cases when the mixers are aligned in a staggered style. These results indicate that a solid foundation is achieved for the effective abatement of NO x in practical applications.

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Experimental analysis and parameter optimization on the reduction of NOx from diesel engine using RSM and ANN Model

Chenniappan¹,

Suresh

Ramesh³

et al. 2022

Environ Sci Pollut Res

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

Cited by 16 publications

References 19 publications

Experimental Analysis And Parameter Optimization On The Reduction of NOx From Diesel Engine Using RSM And ANN Model

Experimental Analysis And Parameter Optimization On The Reduction of NOx From Diesel Engine Using RSM And ANN Model

Optimizing flow field in an SCR system of a 600 MW power plant: effects of static mixer alignment style

Experimental analysis and parameter optimization on the reduction of NOx from diesel engine using RSM and ANN Model

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