CAJ | 학술논문

煤粉料仓下料是气流床粉煤气化工艺中粉体供料单元的重要组成部分，其安全稳定运行具有重大的经济意义。在煤粉循环供料系统上，研究了以空气和CO2为载气的气力输送供料对料仓内煤粉重力下料和通气下料的影响。研究表明，料仓内粉体的堆积或流化状态对后续粉体的流动行为影响明显。对于重力下料，CO2供料后的重力下料过程中煤粉床层空隙率较高，下料流率较大；对于通气下料，空气供料后煤粉难以被CO2气体流化，从而对应较低的下料流率。
매분료창하료시기류상분매기화공예중분체공료단원적중요조성부분，기안전은정운행구유중대적경제의의。재매분순배공료계통상，연구료이공기화CO2위재기적기력수송공료대료창내매분중력하료화통기하료적영향。연구표명，료창내분체적퇴적혹류화상태대후속분체적류동행위영향명현。대우중력하료，CO2공료후적중력하료과정중매분상층공극솔교고，하료류솔교대；대우통기하료，공기공료후매분난이피CO2기체류화，종이대응교저적하료류솔。
Hopper discharge is one of the most important components in the entrained-flow gasification technology of pulverized coal. Safe and stabilized hopper discharge is of great economic significance. The effect of feeding gas, including air and CO2 on hopper discharge was studied in the loop feeding system of pulverized coal. Both gravity discharge and aerated discharge were examined and analyzed. The behavior and flowability of powders would be influenced by their previous bulk or fluidized state. For gravity discharge, the pulverized coal fed by CO2 showed a higher void and thus corresponded to higher discharge rate. For aerated discharge, the pulverized coal fed by air was hard to be fluidized by CO2, resulting in lower discharge rate.