CAJ | 학술논문

研究了稻草及不同温度热解半焦颗粒在内径100mm、高1000mm的有机玻璃流化床中的流化特性.结果表明,稻草颗粒无法单独流化,而其热解半焦颗粒可单独流化;半焦颗粒的最小流化速度随粒径增大而增大,与床层高度无关,筛分粒径为0.45～0.9,0.18～0.45,0.125～0.18 mm的半焦颗粒的最小流化速度分别为0.19,0.16,0.14 m/s:300～550℃温度范围内稻草热解半焦颗粒的流化特性无明显区别;半焦与稻草颗粒混合流化时,稻草颗粒不大于20%(w)时床层有较好的流化质量,混合颗粒的最小流化速度都随混合颗粒中稻草含量增大而增大.
연구료도초급불동온도열해반초과립재내경100mm、고1000mm적유궤파리류화상중적류화특성.결과표명,도초과립무법단독류화,이기열해반초과립가단독류화;반초과립적최소류화속도수립경증대이증대,여상층고도무관,사분립경위0.45～0.9,0.18～0.45,0.125～0.18 mm적반초과립적최소류화속도분별위0.19,0.16,0.14 m/s:300～550℃온도범위내도초열해반초과립적류화특성무명현구별;반초여도초과립혼합류화시,도초과립불대우20%(w)시상층유교호적류화질량,혼합과립적최소류화속도도수혼합과립중도초함량증대이증대.
Fluidization characteristics of straw and semi-char particles were investigated in a fluidized bed with I.D. of 100 mm and height of 1000 mm. The results show that straw particles can not be fluidized alone, but the semi-char particle fluidized well. The minimum fluidization velocities of semi-char particles increase with the particle size, but they are independent of the bed height, the minimum fluidization velocities of semi-char particles (with the sizes of 0.45～0.90, 0.18～0.45, 0.125～0.18 mm) are 0.19, 0.16, 0.14 m/s. The fluidization characteristics of semi-char particles at different temperatures (300～550 ℃) are similar. The fluidization characteristics of the mixture are well as long as the mass fraction of straw is less than 20%, but the minimum fluidization velocities of the mixture increase with the mass fraction of straw in the mixture.