서지주요정보
열중량 반응기에서 $(CuO/γ-Al_2O_3)-SO_2$ 탈황반응 특성 = Reaction kinetics of $(CuO/γ-Al_2O_3)-SO_2$ in a thermogravimetric analyzer
서명 / 저자 열중량 반응기에서 $(CuO/γ-Al_2O_3)-SO_2$ 탈황반응 특성 = Reaction kinetics of $(CuO/γ-Al_2O_3)-SO_2$ in a thermogravimetric analyzer / 유경선.
저자명 유경선 ; Yoo, Kyung-Seun
발행사항 [대전 : 한국과학기술원, 1992].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8003018

소장위치/청구기호

학술문화관(문화관) 보존서고

MCE 92024

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Reaction kinetics of CuO/γ-$Al_2O_3$ - $SO_2$ and the kinetics of thermal decomposition of the sulfated sorbent in a thermogravimetric analyzer (TGA) have been studied. The effects of calcination temperature (450~800℃), sulfation temperature (250~550℃), CuO loading on $γ-$Al_2O_3$ (2~11 wt%), particle size (0.01~5mm), $SO_2$ concentration (2000~9000 ppm), alkali salt loading (NaCl; 0~10 wt%), and sorbent type (γ-$Al_2O_3$, silica-alumina) on sulfation reaction of the sorbent have been determined. In thermal regeneration of the sorbent, the effect of temperature (600~900℃) on the thermal decomposition of sulfated sorbent has been determined. Also, the effects of calcination temperature (500~700℃), CuO loading on $γ-$Al_2O_3$(2~8wt%), and sulfation time (0~150 min) on the physical properties (pore size distribution, surface area) of the sorbent have been determined. The optimum calcination temperature for the sulfation reaction of the sorbent is found to be 600℃. Sulfation reaction rate of the sorbent impregnated with CuO 6~11 wt% at the reaction temperature above 500℃ increases lineally with reaction time in the S/Cu mole ratio between 1.5 and 7. The optimum CuO loading at 500℃ is found to be 8 wt % based on the sulfur capture capacity and S/Cu mole ratio in the sorbent. The saturated sulfur capture capacities of the sorbents increase with decreasing CuO loading and increasing reaction temperature. Activation energy for the reaction of CuO/$γ$-$Al_2O_3$-$SO_2$ is 12.7 kJ/gmol. The reaction order of CuO/γ-$Al_2O_3$-$SO_2$ with respect to $SO_2$ concentration of 1000 - 5000 ppm is found to be 1st order. As an additive, NaCl was impregnated on CuO (8 wt%)/γ-$Al_2O_3$ sorbent which enhances sulfation the reaction rate and the optimum NaCl loading is found to be 5 wt.% whereas, the rate of increase in sulfation reaction decreases with 10 wt%-NaCl loading. With the additive of NaCl, ($1.5>S/Cu$ mole ratio) sulfation reaction rate of the sorbent (CuO 8 wt%) impregnated with 5 wt% - NaCl at reaction temperature above 400℃ increases lineally with reaction time in the S/Cu mole ratio of 1.5~7.0 and the saturated sulfur capture capacity of the sorbent is found to be a S/Cu mole ratio of 10. Pore volumes of the sorbent decrease with increasing reaction time, calcination temperature. Pore size distribution of the sorbent is shifted to larger pore size after the thermal regeneration at 800℃. Sulfation reaction rate and the sulfur capture capacity of the regenerated sorbent decrease with increasing the number of reaction cycle in sulfation and regeneration.

서지기타정보

서지기타정보
청구기호 {MCE 92024
형태사항 viii, 107 p. : 삽도, 수표 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Kyung-Seun Yoo
지도교수의 한글표기 : 김상돈
지도교수의 영문표기 : Sang-Done Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 97-99
주제 Chemical processes.
열 무게 분석. --과학기술용어시소러스
화학 공정. --과학기술용어시소러스
Thermogravimetry.
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