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HWAHAK KONGHAK,
Vol.41, No.5, 667-674, 2003
Vol.41, No.5, 667-674, 2003
천연제올라이트를 지지체로 사용한 고온건식 아연계 탈황제의 반응특성 연구
A Study on the Reactivity of Zinc-based Sorbents for Hot Gas Desulfurization using Natural Zeolite as the Support
고온건식 탈황제의 지지체로 알루미나와 천연제올라이트를 사용하여 아연계 탈황제를 제조하였으며 성능을 조사하였다. 두 가지 탈황제의 반응특성실험은 480 ℃/580 ℃(황화/재생온도)에서 칸 밸런스와 고정층 반응장치로 반응속도와 황수용능력을 비교하였으며 내마모 실험장치를 이용하여 탈황제의 내마모도를 조사하였다. 두 탈황제의 성능 실험결과 천연제올라이트를 지지체로 사용한 탈황제의 초기 황화반응속도가 알루미나를 지지체로 사용한 탈황제보다 빨라졌으며, 10 cycle에서 황수용능력이 20 gS/100 g sorbent 이상 유지되었다. 내마모성은 AI(마모지표)값이 14.7%정도였다. 본 연구에서는 천연제올라이트의 고온건식 탈황제의 지지체로 적용 가능성을 확인하였다.
Two types of zinc-based sorbents using alumina and natural zeolite as the supports for hot-gas desulfurization were prepared, and investigated their desulfurization capability. Their reaction rate and sulfur capacity were compared by Cahn balance and over the fixed bed reactor system at 480 ℃/580 ℃ (sulfidation/regeneration). The attrition resistance was measured by ASTM method. The initial sulfidation rate of ZnO/natural zeolite sorbent was higher than that of ZnO/alumina, and
the sulfur capacity of ZnO/natural zeolite sorbent was maintained above 20 gS/100 g sorbent for 10 cycles. A attrition index was 14.7%. The use of natural zeolite as a support of sorbents may be possible for hot gas desulfurization.
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