氧煤燃烧系统设计的降阶模型

IF 1.5 Q3 ENGINEERING, CHEMICAL
S. Rowan, I. Celik, Albio D. Gutierrez, Jose A. Escobar Vargas
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引用次数: 7

摘要

全氧煤燃烧是目前正在开发的解决燃煤电厂温室气体排放问题的较有前途的技术之一。氧煤燃烧是在纯氧和主要由二氧化碳(CO2)组成的循环烟气(RFG)的混合物中燃烧煤炭燃料。因此,许多研究人员和电厂设计人员转向CFD模拟来研究和设计新的全氧煤燃烧电厂,以及将现有的空气煤燃烧设施改造为全氧煤燃烧操作。虽然CFD是一个可以提供大量信息的强大工具,但就计算资源和时间投资而言,模拟本身可能相当昂贵。为了弥补这一缺陷,开发了一种氧煤燃烧的降阶模型(ROM)来补充CFD模拟。利用该模型,可以在给定一组已知的燃料和氧化剂进入电厂锅炉的质量流量的情况下,快速估计燃烧烟气的平均出口温度,并确定在期望的出口温度下所需的反应器进口质量流量。用这个模型研究了几个案例。计算结果与全CFD模拟结果相当吻合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Reduced Order Model for the Design of Oxy-Coal Combustion Systems
Oxy-coal combustion is one of the more promising technologies currently under development for addressing the issues associated with greenhouse gas emissions from coal-fired power plants. Oxy-coal combustion involves combusting the coal fuel in mixtures of pure oxygen and recycled flue gas (RFG) consisting of mainly carbon dioxide (CO2). As a consequence, many researchers and power plant designers have turned to CFD simulations for the study and design of new oxy-coal combustion power plants, as well as refitting existing air-coal combustion facilities to oxy-coal combustion operations. While CFD is a powerful tool that can provide a vast amount of information, the simulations themselves can be quite expensive in terms of computational resources and time investment. As a remedy, a reduced order model (ROM) for oxy-coal combustion has been developed to supplement the CFD simulations. With this model, it is possible to quickly estimate the average outlet temperature of combustion flue gases given a known set of mass flow rates of fuel and oxidant entering the power plant boiler as well as determine the required reactor inlet mass flow rates for a desired outlet temperature. Several cases have been examined with this model. The results compare quite favorably to full CFD simulation results.
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来源期刊
Journal of Combustion
Journal of Combustion ENGINEERING, CHEMICAL-
CiteScore
2.00
自引率
28.60%
发文量
8
审稿时长
20 weeks
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