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Numerical Analysis for Improving of SOx Removal Efficiency in the DSI(Dry Sorbent Injection Technique) of FGD System(I)  

Chung, Jin-Do (Department of Environmental Engineering, Hoseo University)
Kim, Jang-Woo (Department of Display Engineering, Hoseo University)
Kim, Byung-Hwan (Taeyoung EMC)
Park, Young-Moon (Department of Environmental Engineering, Graduated School, Hoseo University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.1, 2007 , pp. 47-53 More about this Journal
Abstract
The aim of this study is to research applicable possibility or Dry Sorbent Injection Technique(DSI) in sox removal process using Computational Fluid Dynamics(CFD) software package. It will be applied for 500MW in capacity coal-fired thermal power plant operated by South Korea N. Power Co., Ltd. The DSI process is adapted between a preheater and an EP process in the technological assembly. The numerical analysis performs in predicting and optimizing of DSI process's characteristics, which consists of structure of duct, position of injection nozzles, injection speed, and dispersion of sorbent. Computing results are shown that degree of sorbent dispersion depends on structure of duct and position of injection nozzles strongly. The highest dispersion efficiency was obtained when we set a Lobed-plate inside the duct and 6 injection nozzles on the duct(4 injection nozzles at the corners and 2 injection nozzles on upper and under walls as a rectangle duct shape). We also know that change of injection speed of sorbent doesn't have an large effect on the sorbent dispersion but it can effect to drop pressure.
Keywords
DSI; FGD; 2-phase Flow; CFD; Sorbent Dispersion;
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