Application of LES-CFD for predicting pulverized-coal working conditions after installation of NOx control system

被引：50

作者：

Adamczyk, Wojciech P. ^{[1
,2
,3
]}

Isaac, Benjamin ^{[2
]}

Parra-Alvarez, John ^{[2
]}

Smith, Sean T. ^{[2
]}

Harris, Derek ^{[2
]}

Thornock, Jeremy N. ^{[2
]}

Zhou, Minmin ^{[2
]}

Smith, Philip J. ^{[2
]}

Zmuda, Robert ^{[3
]}

机构：

[1] Silesian Tech Univ, Inst Thermal Technol, Gliwice, Poland

[2] Univ Utah, Inst Clean & Secure Energy, Salt Lake City, UT 84112 USA

[3] SBB ENERGY SA, DeNox Technol Dept, Sowinskiego 11, PL-44121 Gliwice, Poland

来源：

ENERGY | 2018年 / 160卷

关键词：

CFD-LES; Combustion; Multiphase; DQMOM; NOx reduction; LARGE-EDDY SIMULATION; DIRECT QUADRATURE METHOD; PARTICLE-LADEN FLOWS; RADIATIVE-TRANSFER; MODEL; DEVOLATILIZATION; COMBUSTION; MOMENTS; ASH;

D O I：

10.1016/j.energy.2018.07.031

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The upcoming environmental requirements outlined at the 2017 European Commission Integrated Pollution Prevention and Control (IPPC) are becoming more and more strict in comparison to the existing standards - lED 2010/75/EU. Questions arise about changes in boiler operating conditions after the adoption of the regulations to fulfill specified emission limits. Of initial concern is the question of which technology to pursue in order to reach the specified level of NOx emissions at 150 mg/Nm(3)@6%O-2. By introducing an air staging technique the NOx limit can be partially achieved; however these changes affect the boiler operation in a detrimental way. In order to investigate impact of de-NOx installation on the temperature and heat flux distribution, numerical techniques can be used. In order to determine the impact of the changes in the boiler operation, this paper presents the application of an advanced, multiphase open-source code Arches, developed at the University of Utah for modeling pulverized-coal combustion using Large-Eddy Simulation (LES). Numerical simulations showed the effect on the boiler's working parameters e.g., heat-transfer rate, temperature distribution, species concentration, and NOx emission before and after proposed modifications. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：693 / 709

页数：17

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