Optimal Design of a Tower Type SCR-deNOx Facility for a 1000 MW Coal-Fired Power Plant Based on CFD Simulation and FMT Validation

Zeng, Haojun; Yuan, Jingqi; Wang, Jingcheng

doi:10.3390/app9051012

Cited by 7 publications

(6 citation statements)

References 25 publications

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“…In an SCR, the design of the mixer affects the performance, and Mehdi et al studied the optimal design to reduce NOx using a numerical investigation [3]. Zeng et al used CFD simulation to study the optimal design of a towertype SCR [4], and the method of analyzing the gas flow of the SCR using numerical analysis is being used with its accuracy verified.…”

Section: Introductionmentioning

confidence: 99%

A 1D–3D Approach for Fast Numerical Analysis of the Flow Characteristics of a Diesel Engine Exhaust Gas

Kong

2021

Machines

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It is necessary to analyze the intake/exhaust gas flow of a diesel engine when turbocharger matching and when installing emission control devices such as exhaust gas recirculation (EGR), selective catalytic reduction (SCR), and scrubbers. Analyzing the intake/exhaust gas flow using a 3D approach can use various analytical models, but it requires a significant amount of time to perform the computation. An approach that combines 1D and 3D is a fast numerical analysis method that can utilize the analysis models of the 3D approach and obtain accurate calculation results. In this study, the flow characteristics of the exhaust gas were analyzed using a 1D–3D coupling algorithm to analyze the unsteady gas flow of a diesel engine, and whether the 1D–3D approach was suitable for analyzing exhaust systems was evaluated. The accuracy of the numerical analysis results was verified by comparison with the experimental results, and the flow characteristics of various shapes of the exhaust system of a diesel engine could be analyzed. Numerical analysis using the 1D–3D approach was able to be computed about 300 times faster than the 3D approach, and it was a method that could be used for research focused on the exhaust system. In addition, since it could quickly and accurately calculate intake/exhaust gas flow, it was expected to be used as a numerical analysis method suitable for analyzing the interaction of diesel engines with emission control devices and turbochargers.

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Section: Introductionmentioning

confidence: 99%

A 1D–3D Approach for Fast Numerical Analysis of the Flow Characteristics of a Diesel Engine Exhaust Gas

Kong

2021

Machines

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“…Many studies have used CFD methods to calculate the distribution, formation and reduction of nitrogen oxides [21]. Many works also model sub-systems of power boilers, such as SCR reactors [10,22] or dedusting systems. In [23], the mixing of the flue gas stream with primary air was modeled to increase the flue gas temperature before the SCR installation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis on the Flue Gas Temperature Maintenance System of a Solid Fuel-Fired Boiler Operating at Minimum Loads

Kurkus-Gruszecka¹,

Krawczyk²,

Lewandowski³

2021

Energies

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Currently, energy policy is associated with the increase in the share of renewable sources in systemic energy production. Due to this trend, coal-fired power units must increase their work flexibility. Adapting a coal power plant to work with a lower load often causes the issue of maintaining the temperature before the selective catalytic reduction (SCR) installation at a sufficiently high level. This paper presents a CFD analysis of the mixing area of two flue gas streams before the SCR installation with various methods for mixing flue gas streams. The novelty of the work is mixing the flue gas streams of different temperatures using a flap shape developed by the authors. A series of numerical simulations were performed to develop the location and method of introducing the higher temperature gas, obtaining a uniform distribution of the exhaust gas temperature. The simulation scheme was applied to a series of geometrical modifications of the boundary conditions. The tested solution using only a single, straight flap in the flue gas duct allows the amplitude to be reduced from 298 K to 144 K. As a result of the research, a mixing flap design was developed to reduce the initial temperature amplitude of the flue gas streams from 298 K to 43 K.

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“…Nitrogen oxides (NOx) are common air pollutants in industrial exhaust gas. The massive emission of NOx is responsible for the formation of smog, acid rain and photochemical smog, which causes great harm to the environment and human health [1,2]. According to the relative policy, the NOx emission is limited to 100 mg•Nm -3 for the pulverized coal boiler in China [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have explored how to optimize the flow field in the SCR system. Zeng et al [1] found that installing small-sized baffles upstream of the facility was helpful to improve the uniformity of flow field. Yu et al [6] and Zhong et al [7] paid their attention to the effect of gas-solid flow on catalyst erosion.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rectifier Grid on Flow Field Upstream of Ammonia Injection Grid

Yuhao¹,

Wu²,

Yuan³

et al. 2021

Preprint

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Optimal Design of a Tower Type SCR-deNOx Facility for a 1000 MW Coal-Fired Power Plant Based on CFD Simulation and FMT Validation

Cited by 7 publications

References 25 publications

A 1D–3D Approach for Fast Numerical Analysis of the Flow Characteristics of a Diesel Engine Exhaust Gas

A 1D–3D Approach for Fast Numerical Analysis of the Flow Characteristics of a Diesel Engine Exhaust Gas

Numerical Analysis on the Flue Gas Temperature Maintenance System of a Solid Fuel-Fired Boiler Operating at Minimum Loads

Effect of Rectifier Grid on Flow Field Upstream of Ammonia Injection Grid

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