CFD Simulations of a Heat Recovery Steam Generator for the Aid of Power Plant Personnel

Galindo-García, Iván F.; Vázquez-Barragán, Ana K.; Rossano-Román, Miguel

doi:10.1115/icone20-power2012-55214

Cited by 2 publications

(3 citation statements)

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“…Trabajos similares para la combustión de madera o residuos urbanos se han abordado en países desarrollados. Los documentos publicados en Galindo-García et al (2012) y Nielsen et al (2000) demuestran la posibilidad de superar problemáticas similares. En Colombia se han realizado algunos estudios para evaluar el desempeño de calderas que funcionan con biomasa, como es el caso de Carvajal Díaz (2018) o de Albarracín-Becerra et al (2019) en los que se diseña un sistema de cocombustión entre biomasa (palma de aceite) y biogás en una caldera.…”

Section: Introductionunclassified

Hacia el aprovechamiento energético de los raquis de palma en calderas de biomasa

Bayona-Roa

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Jeisson³

et al. 2023

Palmas

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Quemar raquis de palma (también llamado tusa) en las calderas de biomasa trae consigo la superación de distintos problemas tecnológicos asociados a ese biocombustible. En particular, el alto contenido de potasio, fósforo y cloro son elementos potencialmente perjudiciales por la corrosión que generan en las superficies de transferencia de calor. En este artículo se discute cómo superar las problemáticas tecnológicas para que las calderas generadoras de vapor y electricidad en plantas de beneficio de aceite de palma puedan operar quemando raquis que anteriormente no se usaba en la generación de energía en la industria. Estas consideraciones, aunque técnicas, se orientan a mejorar la sostenibilidad y la competitividad de la agroindustria de la palma de aceite.

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Section: Introductionunclassified

Hacia el aprovechamiento energético de los raquis de palma en calderas de biomasa

Bayona-Roa

Navarro

Jeisson³

et al. 2023

Palmas

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“…The CFD simulations have been widely used to visualize the flow and species distributions in industrial vessels including HRSG [6][7][8][9]. Time-dependent simulations are developed as well to study the transient behavior.…”

Section: Introductionmentioning

confidence: 99%

“…The objective of this article is utilizing a transient computational fluid dynamics (CFD) simulation method for estimating the local fuel/air mixture concentrations and refining the calculations for the pressure rise due to deflagration at a fuel lean condition. The CFD simulations have been widely used to visualize the flow and species distributions in industrial vessels including HRSG . Time‐dependent simulations are developed as well to study the transient behavior.…”

Section: Introductionmentioning

confidence: 99%

Method for CFD facilitated pressure rise calculation due to deflagration in heat recovery steam generator

Zhou¹,

Cardenas²,

Moyeda³

2017

Process Safety Progress

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For combined cycle operations, especially during startup and shutdown, safety concerns have always been the top priority. Residual fuels can escape to and accumulate in the downstream heat recovery steam generator (HRSG) if appropriate purge is not taken, which may cause deflagration, an explosion at subsonic condition, during startup when heat source exists. Residual fuel deflagration will lead to pressure rise and therefore, structural and or tube damages depending on the level of pressure increase. Therefore, a careful study of the residual fuel distribution in HRSG and the pressure rise due to possible deflagration is wanted.Historically, thermodynamics relationships and chemical equilibrium calculations are used to estimate the pressure rise. These approaches either assume that all fuel energy is converted into heat, or make assumptions on the amount of fuel in chemical equilibrium that contributes to the pressure rise. These assumptions tend to overestimate the pressure rise. With the development of computational fluid dynamics (CFD) simulation, a more accurate prediction of the fuel concentration in HRSG during transient startup and/or shutdown process is possible. The local fuel concentrations can now be calculated and therefore, how much fuel that are within the explosion limits and contribute to the pressure rise can be detected readily.This article presents the transient CFD modeling results of residual fuel concentration in a typical HRSG configuration during a gas turbine/combined cycle startup failure process. The article then refines the adiabatic mixing model with the predicted local fuel concentrations to provide a better estimation of the pressure rise due to deflagration.

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CFD Simulations of a Heat Recovery Steam Generator for the Aid of Power Plant Personnel

Cited by 2 publications

References 0 publications

Hacia el aprovechamiento energético de los raquis de palma en calderas de biomasa

Hacia el aprovechamiento energético de los raquis de palma en calderas de biomasa

Method for CFD facilitated pressure rise calculation due to deflagration in heat recovery steam generator

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