旋转超重力场净化沥青烟颗粒物的研究

Research on Purification of Asphalt Smoke Particles by Rotating Super-Gravity Field

沥青在加热使用过程中产生大量沥青烟颗粒物,为了克服传统的过滤法容易堵塞滤料、喷淋塔水洗法净化率不高、静电捕集法存在着火隐患等不足。本文研究了旋转超重力机转子外腔体进气,内腔体喷水条件下,转子转速、喷水量、气体流量等参数对沥青烟颗粒物去除率的影响规律。研究发现:沥青烟颗粒物去除率随转速增加而增大,在低转速阶段转速对去除率的影响较大,高转速阶段转速对去除率影响增幅减缓。在不喷水条件下去除率较低,喷水可以有效提高去除率。随入口气体流量增加去除率降低,缩短了停留时间。在本研究最优化条件下最高去除率为99.2%。研究表明超重力机能够有效净化沥青烟颗粒物,为沥青烟颗粒物净化提供一种新技术,具有环保意义和应用价值。

During asphalt heating and usage,many asphalt fume particles are produced.Traditional filtration methods tend to clog easily,and the purification rate of the spray tower water washing method is low.Also,the electrostatic capture method has some fire hazards.We investigated the impact of various factors on the removal rate of asphalt fume particulate matter.These included the rotary supergravity machine rotor outer chamber air intake,inner chamber water spray conditions,rotor speed,water spray,gas flow.The study revealed that increasing the rotational speed improves the removal rate of asphalt fume particles.This effect is more pronounced at low rotational speeds.At high rotational speeds,the effect of rotational speed on the removal rate slows down.The removal rate is lower without water spray.However,water spray can effectively enhance the removal rate.As the inlet gas flow rate increased,the removal rate decreased,and the residence time shortened.Under the optimized conditions in this study,the maximum removal rate was 99.2%.The study demonstrates that the super-gravity field efficiently purifies asphalt fume particles and offers a new technology for purifying such particles,which is environmentally significant and has practical applications.