http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박영철,양현수,손재익 ( Young Cheol Bak,Hyun Soo Yang,Jae Ek Son ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.3
The numerical analysis for the 7.5 ㎝ I. D. atmospheric lab. scale fluidized bed coal gasifier was conducted with the bubble assemblage model for gas, the population balance model for solid, and the basic coal gasification kinetic equation in the form of power law. The mole percent of H₂ in the product gas was 10-30%, that of CO was 5-20%, that of CO₂ was 6-12%, and that of CH₄ was 2-4% with variation of the simulation condition such as temperature(750-1000℃), air flow rate(1.5-5.0 ㎏/hr-air/㎏/hr-char), and steam flow rate(0.5-2.5 ㎏/hr-steam/㎏/hr-char).
박영철,양현수,손재익 ( Young Cheol Bak,Hyun Soo Yang,Jae Ek Son ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.1
Gasification of Victoria subbituminous coal was conducted in a 7.5 ㎝-ID atmospheric lab-scale fluidized-bed gasifier with variation of operating conditions such as temperature(800-900℃), char feeding rate(1.6 ㎏/hr), air flow rate(4.33-6.5 ㎏/hr), particle size(0.31 ㎜, 0.6 ㎜), and steam flow rate(0.8-2.5 ㎏/hr). As a result, the mol concentration of H₂ in the product gas was 21.4-8.8%, that of CH₄ was 1.0-0.05%, that of CO was 18.5-7.3%, and that of CO₂ was 18.37-8.44%. The calorific value of product gas was in the range of 1,308 ㎉/㎥ to 500 ㎉/㎥, and carbon conversion was in the range of 71% to 94%.
비등온법에 의한 석탄의 열분해 및 촤 - CO 2 가스화 반응특성
손재익,박영철 한국화학공학회 1987 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.26 No.1
동원 무연탄, 호주 역청탄, 파키스탄 갈탄을 시료로 하여 수평형 열중량분석기를 이용한 석탄 열분석 실험을 하였다. 비등온 열분해 반응에서 온도 250-600℃ 사이에서 전체반응의 80%가 완결되었고, 열분해 반응속도는 온도, 가열속도, 석탄종류에 영향을 받았다. 열분해 반응 활성화에너지는, 호주 역청탄이 28.28㎉/g-㏖, 파키스탄 갈탄이 11.18㎉/g-㏖ 이었다. 비등온 촤-CO₂가스화 반응에서는 온도 500-750℃ 범위에서 화학반응 율속조건을 만족하였다. 동원무연탄 촤, 호주 역청탄 촤의 경우 CO₂ 농도 6.2×10^(-5)g-㏖/㎤(20℃, 200KPa)에서 부터 파키스탄 갈탄 촤는 4×10^(-5)g-㏖/㎤(20℃, 200KPa)에서 부터 CO₂기체농도의 영향을 받지 않게 되었다. 비등온 촤-CO₂가스화 반응에서의 활성화에너지는 동원 무연탄 촤 29.4.㎉/g-㏖, 호주 역청탄 16.39㎉/g-㏖, 파키스탄 갈탄 촤 22.20㎉/g-㏖로 각각 구하여졌다. Thermal analysis were conducted to characterize the pyrolysis and char-CO₂ gasification by measuring the reactivities of different coal samples in a horizontal thermogravimetric analyzer. The tested coal samples were Don-Won anthracite, Australia bituminous coal and Pakistan lignite. Nearly 80% of nonisothermal pyrolysis reaction is completed between 250℃ and 600℃. Reaction rate of pyrolysis is affected by reaction temperature, heating rate and coal properties. Measured activation energies of pyrolysis reaction are 28.28㎉/g-㏖ for Australia bituminous coal and 11.18㎉/g-㏖ for Pakistan lignite. Chemical reaction control region of nonisothermal char-CO₂ gasification reaction is between 500℃ and 750℃. The concentration of CO₂ gas does not influence on the reaction in the concentration over 6.2 × 10^(-5) g-㏖/㎤3 for DongWon anthracite char and Australia bituminous char, and over 4 × 10^(-5) g-㏖/㎤ for Pakistan lignite char. Measured activation energies of char-CO₂ gasification reaction are 29.4 ㎉/g-㏖ for Dong-Won anthracite char, 16.39 ㎉/g-㏖ for Australia bituminous char and 22.20 ㎉/g-㏖ for Pakistan lignite char.