CFD-Based Modeling of Inflight Mercury Capture.

Madsen, J. L. ; O'Brien, T. J.

Technical Information Center Oak Ridge Tennessee

关键词: Inflight mercury capture;    Sorbent injection;    Numerical model;    Microscopic sorbent scale;    Macroscopic flow conditions;   

RP-ID  :  DE2008912855

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A numerical model of sorbent injection and in-flight mercury capture is presented. There are few existing models of mercury capture, and these typically make gross assumptions of plug gas flow, no velocity slip between particle and gas phase, and uniform sorbent dispersion. All of these assumptions are overcome with the current model, which combines the physics of mass transfer at the microscopic sorbent scale with macroscopic flow conditions provided via Computational Fluid Dynamics (CFD) simulations. The implication is a cost-efficient tool for design of injection systems that maximize capture efficiency. The modeling framework will be presented along with results based on simulation of sites from the DOE/NETL sorbent injection field test program.