Performance Evaluation of a Novel Thermal Power Plant Process with Low-Temperature Selective Catalytic Reduction

Seongil Kim, Taeyoung Chae, Yongwoon Lee, Won Yang and Sungho Hong
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Seongil Kim: Clean Energy System R&D Department, Research Institute of Clean Manufacturing System, Korea Institute of Industrial Technology, Cheonan 31056, Korea
Taeyoung Chae: Clean Energy System R&D Department, Research Institute of Clean Manufacturing System, Korea Institute of Industrial Technology, Cheonan 31056, Korea
Yongwoon Lee: Clean Energy System R&D Department, Research Institute of Clean Manufacturing System, Korea Institute of Industrial Technology, Cheonan 31056, Korea
Won Yang: Clean Energy System R&D Department, Research Institute of Clean Manufacturing System, Korea Institute of Industrial Technology, Cheonan 31056, Korea
Sungho Hong: GEESCO, LTD, Geumcheon-gu, Seoul 08589, Korea

Energies, 2020, vol. 13, issue 21, 1-22

Abstract: We present the concept of a novel thermal power plant process in conjunction with low-temperature selective catalytic reduction (SCR). This process can be employed to achieve modern standards for NOx emissions and solve problems related to post-gas cleaning processes, such as thermal fatigue, catalyst damage, and an increase in differential pressure in the boiler. Therefore, this study is aimed at evaluating the performance of a novel flue-gas cleaning process for use in a thermal power plant, where a low-temperature SCR is implemented, along with the existing SCR. We developed a process model for a large-scale power plant, in which the thermal power plant was divided into a series of heat exchanger block models. The mass and energy balances were solved by considering the heat transfer interaction between the hot and cold sides to obtain the properties of each material flow. Using the process model, we performed a simulation of the new process. New optimal operating conditions were derived, and the effects that the new facilities have on the existing process were evaluated. The results show that the new process is feasible in terms of operating stability and cost, as well as showing an increase in the boiler thermal efficiency of up to 1.3%.

Keywords: low-temperature selective catalyst reduction; thermal power plant; flue gas cleaning; process model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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