Reducing particulates and gaseous emissions through fuel switching from coal to wood pellets at power plants in South Korea during 2005 to 2022

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2023-10-26 DOI:10.15376/biores.18.4.8458-8472

Seung-Rok Lee, Sae Byul Kang, Gyu-Seong Han

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引用次数: 0

Abstract

This study analyzed the particulates and gaseous emissions from 2005 to 2022 for power plants in South Korea (Utility scale: 125 MW (B-1) and 200 MW (B-2), respectively), which recently successfully converted from coal to wood pellets. The analysis showed that (1) NOx reduction was 78.9 to 90.0% (with outlet denitrification facility), (2) SOx reduction was 95.0 to 99.6% (without desulfurization facility condition), and (3) total suspended particles (TSP) reduction was 70.3 to 87.2% (with improved filtration and dust collection facility). This research confirmed the capabilities of wood pellets as a baseload power source and demonstrated their superior NOx reduction compared to coal. In the case of SOx, the desulfurization facility was discontinued at the stage of the fuel switch, so the value was affected by exogenous variable factors other than fuel. The TSP appears to be a combination of the ‘fine dust’ contained in the wood pellets and the performance of the filtration dust collector. The results suggest that fuel switching to wood pellets is a viable alternative to fossil fuels as an appropriate climate technology.

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2005年至2022年期间，通过在韩国发电厂从煤炭转向木质颗粒燃料，减少颗粒物和气体排放

该研究分析了最近成功将煤炭转化为木屑颗粒的韩国发电厂(公用事业规模:125兆瓦(B-1)和200兆瓦(B-2)) 2005年至2022年的颗粒物和气体排放情况。分析表明:(1)有出口脱硝装置时，NOx的降低率为78.9 ~ 90.0%;(2)无脱硫装置时，SOx的降低率为95.0 ~ 99.6%;(3)有改进过滤和集尘装置时，总悬浮粒子(TSP)的降低率为70.3 ~ 87.2%。这项研究证实了木屑颗粒作为基本负荷电源的能力，并证明了与煤炭相比，它们具有更好的氮氧化物还原能力。以SOx为例，由于在燃料切换阶段停止了脱硫设施，因此该值受到燃料以外的外生变量因素的影响。TSP似乎是木屑颗粒中含有的“细粉尘”和过滤除尘器性能的结合。结果表明，燃料转换为木屑颗粒是化石燃料的可行替代品，是一种适当的气候技术。

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.