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저온 배연탈황공정의 흡수제 특성에 관한 연구

Characteristics of Sorbents for Flue Gas Desulfurization at Low Temperature

양정선 오의경 김선근

Yang JS Oh EK Kim SG

HWAHAK KONGHAK, October 1996, 34(5), 576-584(9), NONE

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Abstract

배연 탈황 흡수제의 특성을 사상 반응기(sand-bed reactor)를 이용하여 살피었다. 흡수제, 공정변수, 그리고 첨가제를 바꾸어 가며 기상에서의 탈황률을 비교하였다. 그리고 이 결과를 SEM, EDX, XRD, TGA, BET 등으로 탈황 전후의 흡수제 분말을 관찰하고 분석하여 검토하였다. 탈황률은 탈황제의 흡습성, 표면적, 기공 구조(pore structure) 변화 등에 크게 의존하였다. 특히 Ca (OH)₂의 경우 흡수제의 기공 막힘(pore plugging) 현상을 관찰하였으며 습도 및 첨가제의 효과가 이와 직접 연관이 있음을 알았다.

Characteristics of sorbents for flue gas desulfurization has been investigated in sand-bed reactor. SO₂removal efficiency in gas phase was compared for the various sorbents, process variables and additives. The results have been discussed by observing and analyzing the sorbent particles before and after sulfation with SEM, EDX, XRD, TGA and BET. The SO₂removal efficiency of the sorbents was affected by their hygroscopicity, surface area and pore- structure change during the reaction. In case of Ca(OH)₂, pore plugging was observed, and humidity of the gas and addition of the additives were directly related with the pore plugging.

Keywords

Flue Gas Desulfurization Sand-bed Reactor SO₂ Removal Efficiency Ca(OH)₂

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