CAJ | 학술논문

利用新开发的微型流化床反应分析仪（micro－fluidized bed reaction analysis， MFBRA）考察了义马烟煤半焦的原位以及两种非原位半焦气化行为并测定了其动力学参数，其中，原位半焦气化是指煤热解温度和气氛与半焦气化过程一致，非原位半焦1气化是指煤在 Ar 气氛下热解，热态条件下直接在 CO2气氛下气化；非原位半焦 2气化是指煤在 Ar 气氛下热解，冷却收集后再在 CO2气氛下气化。研究发现，原位半焦具有最大的比表面积和最小的平均孔径，石墨化程度最弱，且对 CO2的化学吸附能力最强，表面活性位点最多。在最小化气体扩散的实验条件下，原位半焦气化反应的反应速率明显比非原位半焦气化反应快，且求取的活化能数据较小。实验揭示了原位半焦和非原位半焦结构和反应性的差异，也证明了 MFBRA 对原位等温气化反应的适用性。
이용신개발적미형류화상반응분석의（micro－fluidized bed reaction analysis， MFBRA）고찰료의마연매반초적원위이급량충비원위반초기화행위병측정료기동역학삼수，기중，원위반초기화시지매열해온도화기분여반초기화과정일치，비원위반초1기화시지매재 Ar 기분하열해，열태조건하직접재 CO2기분하기화；비원위반초 2기화시지매재 Ar 기분하열해，냉각수집후재재 CO2기분하기화。연구발현，원위반초구유최대적비표면적화최소적평균공경，석묵화정도최약，차대 CO2적화학흡부능력최강，표면활성위점최다。재최소화기체확산적실험조건하，원위반초기화반응적반응속솔명현비비원위반초기화반응쾌，차구취적활화능수거교소。실험게시료원위반초화비원위반초결구화반응성적차이，야증명료 MFBRA 대원위등온기화반응적괄용성。
In-situ char and ex-situ char gasification characteristic was studied by using a newly developed micro fluidiz ed bed reaction anal yzer (MFBRA) and the reaction kinetics parameter s were obtained.The in-s itu char gasification proceedsu sing the same atmosphere, temperature and reactor in the gasification following the pyrolysis; the ex-situc har 1 ga sification is defin ed as coal pyrolysis in Ar atmospher e and then gasification at hot state in the same reac tor; and ex-situ char 2 gasif cati on reaction is defined as coal pyrolysis in Ar atmosphere and then gasification after thermal annealing.By analyzing the three kinds of char, it can be seen that in-situ char has the largest specific surface area, lowest graphitiza tion degree, and strongest sorpt ion ability for CO2 .U ndert he minimized limitat ions of heat and mass transfer, in-si tu char gasification has the highest reaction rate, and lo west rea ction energy.The study also proves ther eliability of MFBRA for in-situ char gasification reaction.