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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
영남대학교 응용화학공학부 국가지정연구실, 712-749 경북 경산시 대동 214-1 1경북대학교 화학공학과, 702-701 대구시 북구 산격동 1370
National Research Laboratory, School of Chemical Engineering and Technology, Yeungnam University, 214-1 Dae-dong, Gyeongsan, Kyungpook 712-749, Korea 1Department of Chemical Engineering, Kyungpook National University, 1370 Sankeuk-dong, Bukgu, Daegu 702-701, Korea
HWAHAK KONGHAK, October 2003, 41(5), 667-674(8), NONE
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Abstract
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_x000D_
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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Park NK, Lee CU, Ryu SO, Lee TJ, Kim JC, Energy Eng. J., 11(2), 136 (2002)
Lee YW, Son JE, Chem. Ind. Technol., 13(1), 53 (1995)
Yi CK, Wi YH, Chem. Ind. Technol., 13(5), 466 (1995)
Rutkowski MD, Klett MG, Zaharchuk R, "Assesment of Hot Gas Containment Control," Proceeding of the Advanced Coal-Fired Power Systems '96 Review Meeting, METC (1996)
Copeland RJ, Cesario M, Dubovik M, Feinberg D, Windecker B, "A Long Life ZnO-TiO2 Sorbent," Proceeding of the Advanced Coal-Fired Power Systems '95 Review Meeting Volume I, 394 (1995)
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Rhee YW, Lee TJ, Yi CK, Chem. Ind. Technol., 15(3), 237 (1997)
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Ayala R, March DW, Ind. Eng. Chem. Res., 30(1), 55 (1991)
Woods MC, Gangwal SK, Ind. Eng. Chem. Res., 30(1), 100 (1991)
Gibson JB, Herrison DP, Ind. Eng. Chem. Process Des. Dev., 19, 231 (1980)
Sa LN, Focht GD, Ranade PV, Harrison DP, Chem. Eng. Sci., 44(2), 215 (1989)
Kidd DR, "Nickel-Promoted Absorbing Compositions for Selective Removal of Hydrogen Sulfide," U.S. Patent, No. 5,094,996 (1992)
Kidd DR, Delzer GA, Kubick DH, Schubert PF, "Selective Removal of Hydrogen Sulfide over a Zinc Oxide and Silica Absorbing Composition," U.S. Patent, No. 5,358,921 (1994)
Khare GP, Cass BW, "Fluidizable Sulfur Sorbent and Fluidized Sorption Process," U.S. Patent, 5,439,867 (1995)
Kidd DR, "Selective Removal of Hydrogen Sulfide over a Nickel-promoted Absorbing Composition," U.S. Patent, No. 4,990,318 (1991)
Lim CJ, Cha YK, Park NK, Ryu SO, Lee TJ, Kim JC, HWAHAK KONGHAK, 38(1), 111 (2000)
Kang SC, Jun HK, Lee TJ, Ryu SO, Kim JC, HWAHAK KONGHAK, 40(3), 289 (2002)
Gupta RP, Gangwal SK, "Enhanced Durability of High-Temprature Desulfurization Sorbents for Fluidized-Bed Applications," Topical Report to DOE/METC, November (1992)
ASTM D 5757-95, "Standard Method for Detemination of Attrition of Powered Catalysts by Air Jets," (1995)
Jun HK, Lee TJ, Kim JC, Ind. Eng. Chem. Res., 41(19), 4733 (2002)
Lee HS, Kang MP, Song YS, Lee TJ, Rhee YW, Korean J. Chem. Eng., 18(5), 635 (2001)
Jun HK, Lee TJ, Ryu SO, Kim JC, Ind. Eng. Chem. Res., 40(16), 3547 (2001)
Szekely J, Evans JW, Sohn HY, "Gas-Solid Reactions," Academic Press, New York (1976)
Gibson JB, Harrison DP, Ind. Eng. Chem. Process Des. Dev., 19, 231 (1980)
Sasaoka E, Hatori M, Yoshimura H, Su C, Uddin MA, Ind. Eng. Chem. Res., 40(11), 2512 (2001)
Park NK, Lee CU, Ryu SO, Lee TJ, Kim JC, Energy Eng. J., 11(2), 136 (2002)
