CAJ | 학술논문

采用快速热解固定床在恒温热解条件下研究了不同混合比例不同煤阶煤与重油残渣共热解焦的形貌和焦产率的规律,进而在热重分析仪上采用非等温气化方法研究了煤焦、重油残渣焦及混合焦的气化反应性。结果表明,煤与重油残渣共热解焦有明显的结块现象,但焦产率与理论值一致,表明共热解过程中两者没有相互作用。重油残渣焦的气化反应性较褐煤和烟煤的低,比无烟煤活性略高,重油残渣与褐煤和烟煤混合焦气化反应速率比计算值高,表明气化过程有促进作用存在,进一步分析表明,煤中的矿物质如Ca、Fe,对重油残渣气化有一定的催化作用。
채용쾌속열해고정상재항온열해조건하연구료불동혼합비례불동매계매여중유잔사공열해초적형모화초산솔적규률,진이재열중분석의상채용비등온기화방법연구료매초、중유잔사초급혼합초적기화반응성。결과표명,매여중유잔사공열해초유명현적결괴현상,단초산솔여이론치일치,표명공열해과정중량자몰유상호작용。중유잔사초적기화반응성교갈매화연매적저,비무연매활성략고,중유잔사여갈매화연매혼합초기화반응속솔비계산치고,표명기화과정유촉진작용존재,진일보분석표명,매중적광물질여Ca、Fe,대중유잔사기화유일정적최화작용。
In order to find an efficient and feasible technological route to dispose and utilize deoiled asphalt ( DOA, a byproduct of solvent deasphalting process) , the co-pyrolysis/gasification of DOA with different rank of coal was investigated. A series of isothermal co-pyrolysis experiments were conducted in a fixed bed reactor to observe the characteristics of the char yields and the pattern of the blends. Then a set of non-isothermal experiments were performed by thermogravimetric system to evaluate the gasification characteristics of the chars of coal, DOA and the blends. It is observed that the co-pyrolysis char formed as blocks, while the char yields show that the co-pyrolysis process has no interaction between the two resources. The gasification reactivity of the DOA char is lower than that of lignite and bituminous coal char, and is a bit higher than that of anthracite char. The gasification reactivity of the blended char of DOA with lignite/bituminous coal is found higher than that of the calculated, which clearly demonstrating that the synergetic effect existed during the gasification process, and that is mainly caused by the minerals such as Ca, Fe contained in coal char.