CAJ | 학술논문

为了研究水激冷相变后固态熔渣的理化特性规律，在气流床水冷壁气化炉热模实验平台上，以神府煤灰渣、柴油、氧气等作为实验介质，采用扫描电镜（SEM）和X射线衍射（XRD）等方法对不同操作温度下不同粒度的熔渣形态、晶相进行表征及对比分析，并探讨液态熔渣遇水快速冷却时的形态转变机理。研究表明：随操作温度升高，熔渣孔隙率和晶体含量减少，无定形玻璃态物质增多。遇水激冷后熔渣的气孔及热应力变化造成多孔熔渣易发生断裂、破碎行为；粒度较大的熔渣易发生断裂、破碎行为。粒度较大的熔渣主要存在开放性孔，粒度较小的熔渣主要存在封闭性孔。
위료연구수격랭상변후고태용사적이화특성규률，재기류상수랭벽기화로열모실험평태상，이신부매회사、시유、양기등작위실험개질，채용소묘전경（SEM）화X사선연사（XRD）등방법대불동조작온도하불동립도적용사형태、정상진행표정급대비분석，병탐토액태용사우수쾌속냉각시적형태전변궤리。연구표명：수조작온도승고，용사공극솔화정체함량감소，무정형파리태물질증다。우수격랭후용사적기공급열응력변화조성다공용사역발생단렬、파쇄행위；립도교대적용사역발생단렬、파쇄행위。립도교대적용사주요존재개방성공，립도교소적용사주요존재봉폐성공。
In order to study the physicochemical property of water-cooled solid slag,from a lab-scale membrane wall entrained-flow gasifier,the surface morphology and crystals of slag at different temperature were investigated by SEM and XRD.The mechanism of morphology change of liquid slag during cooled rapidly by water was also explored.Shenfu slag,diesel oil and oxygen were prepared as raw materials.The experimental results show that both porosity of slag and the content of crystalline particles in ash slag decrease,but the content of glassy amorphous particles increases with the increase of experimental temperature.It shows that fragmentation occurs when the porous slag from furnace wall is cooled by water,and the fragmentation is determined by the porosity of pores and the thermal stress.The large slag particle is more inclined to rupture than the small one.The large slag particle contains open pores,while small one has closed pores.