CAJ | 학술논문

以桉木为原料，对1.5 t/h 生物质混流式固定床气化炉运行特性进行了测试分析与评价，与文献报道的相关炉型包括上吸式、下吸式、两段式等炉型运行结果进行了比较。实验以气化炉空气通入量作为主要控制变量，对有或无水蒸气条件下的气化炉温度及压力分布、燃气组成、焦油与飞灰含量、气体产率等参数进行了较长周期的测试，结果表明：气化炉运行效果符合设计要求，各项指标相当于或优于传统的下吸式气化炉；气化炉运行温度与压力比较稳定；以冷燃气计算的燃气热值约为4900~5500 kJ/Nm3；气化效率约为70%~78%；燃气焦油含量约600~3500 mg/Nm3，运行负荷在50%以上时，焦油含量一般低于1500 mg/Nm3。研究结果有望为混流式气化炉的改进和操作提供优化建议，同时可为其他气化工艺设计提供参考依据。
이안목위원료，대1.5 t/h 생물질혼류식고정상기화로운행특성진행료측시분석여평개，여문헌보도적상관로형포괄상흡식、하흡식、량단식등로형운행결과진행료비교。실험이기화로공기통입량작위주요공제변량，대유혹무수증기조건하적기화로온도급압력분포、연기조성、초유여비회함량、기체산솔등삼수진행료교장주기적측시，결과표명：기화로운행효과부합설계요구，각항지표상당우혹우우전통적하흡식기화로；기화로운행온도여압력비교은정；이랭연기계산적연기열치약위4900~5500 kJ/Nm3；기화효솔약위70%~78%；연기초유함량약600~3500 mg/Nm3，운행부하재50%이상시，초유함량일반저우1500 mg/Nm3。연구결과유망위혼류식기화로적개진화조작제공우화건의，동시가위기타기화공예설계제공삼고의거。
This paper evaluated the gasification performance of a 1.5 t/h coupled drafting fixed bed gasifier using eucalypt, and compared the operating parameters to other fixed bed gasifiers from literatures including updraft, downdraft and two-stage. The air with or without steam input amount was selected as a major controlling variable, temperature and pressure distribution, syngas composition, tar and fly ash content, gas yield were tested in a long period. The results show that the operating performance of the coupled drafting gasifier meets the design requirements. The operating temperature and pressure are relatively stable. The syngas calorific value is approximately 4 900~5 500 kJ/Nm3. In most of running conditions, the cold gas efficiency of about 70%~78%could be obtained. The syngas tar content is mainly in the range of 600 ~ 3 500 mg/Nm3 and generally lower than 1 500 mg/Nm3 when running at capacities of higher than 50%. The parameters considered are all equal to or better than conventional downdraft fixed bed gasifier. The results are expected to improve the design and operation of the coupled drafting gasifier, and also to provide a reference for other gasification process.