CAJ | 학술논문

以十二烷基苯磺酸钠和柠檬酸三钠为催化剂,利用常压热分析仪对福建省创宏无烟煤进行了水蒸气气化动力学实验.在850~950,℃下测定了催化剂加载量为0~15%时,转化率随气化时间的变化;并采用缩核模型对实验数据进行拟合,给出相应的动力学参数.结果表明,十二烷基苯磺酸钠和柠檬酸三钠均能明显提高反应的气化速率,降低气化反应活化能;表面活性剂十二烷基苯磺酸钠的催化效果优于络合剂柠檬酸三钠,且与碳酸钠催化效果相当,是一种良好的煤催化气化催化剂.
이십이완기분광산납화저몽산삼납위최화제,이용상압열분석의대복건성창굉무연매진행료수증기기화동역학실험.재850~950,℃하측정료최화제가재량위0~15%시,전화솔수기화시간적변화;병채용축핵모형대실험수거진행의합,급출상응적동역학삼수.결과표명,십이완기분광산납화저몽산삼납균능명현제고반응적기화속솔,강저기화반응활화능;표면활성제십이완기분광산납적최화효과우우락합제저몽산삼납,차여탄산납최화효과상당,시일충량호적매최화기화최화제.
The steam gasification kinetics of Chuanghong anthracite by using sodium dodecyl-benzenesulfonate and sodium citrate as catalysts was investigated in an isothermal thermo-gravimetric analyzer under ambient pressure. The relationships between coal conversion and reaction time at different catalyst concentrations(0—15%)was studied within the temperature range of 850—950,℃. The catalytic steam gasification reaction was well fitted by the shrink-ing-core model and the kinetic parameters were obtained. The research results showed that both catalysts can greatly improve gasification rate and remarkably reduce the activation energy of gasification reaction. Sodium dodecyl-benzenesulfonate has the same catalytic effect as sodium carbonate and better catalytic effect than sodium citrate on gasification rate, so it is a good catalyst for catalytic gisification of anthracite.