废旧橡胶裂解物料运动和传热的模拟研究  

Simulation Study on Material Movement and Heat Transfer in Waste Rubber Cracking Process

作　　者：尹凤福[1] 庄虔晓 徐衍辉 张超 田晓龙[1] 汪传生[1] YIN Fengfu;ZHUANG Qianxiao;XU Yanhui;ZHANG Chao;TIAN Xiaolong;WANG Chuansheng(Qingdao University of Science and Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《橡胶工业》2020年第11期854-860,共7页China Rubber Industry

基　　金：国家自然科学基金资助项目(51875297);山东省自然科学基金重点资助项目(ZR2016XJ003)。

摘　　要：分析裂解回转炉结构并建立废旧橡胶裂解物料颗粒(橡胶物料)运动的数学物理模型,得到回转炉体螺旋角、长度和转速对橡胶物料停留时间的影响公式及橡胶物料在回转炉中充分停留情况下处于滚落运动模式时炉体的理论转速范围;通过颗粒力学仿真软件(EDEM软件)对橡胶物料在回转炉中的运动进行模拟,得到橡胶物料混合程度最佳的炉体转速;对比加入循环介质二氧化锆小球前后的橡胶物料运动状态,分析二氧化锆小球对橡胶物料运动和传热的影响;通过橡胶物料在300℃时的传热情况推断出废旧轮胎裂解过程中回转炉内顺丁橡胶的传热效果较好,其次是溴化丁基橡胶,天然橡胶和丁苯橡胶较差。The structure of pyrolysis rotary kiln was analyzed,and a mathematical model of movement of waste rubber cracking material particle(rubber material)was established.The formula for the influence of helix angle,length and rotation speed of the rotary kiln body on the residence time of the rubber materials was obtained,and the theoretical rotational speed range of the kiln body was obtained when the rubber material was in the rolling motion mode under full retention in the rotary kiln.The particle mechanics simulation software(EDEM software)was used to simulate the rubber material rotation in the kiln,the kiln body rotational speed with the best mixing degree of the rubber material was obtained.The influence of the zirconia ball as the recycling medium on the rubber material movement and heat transfer was analyzed by comparing the rubber material movement state.It could be inferred that the heat transferring effect of butadiene rubber in the rotary kiln at 300℃was the best,followed by bromobutyl rubber,and the natural rubber and styrene-butadiene rubber were poor,during the waste rubber cracking process in the rotary kiln.

关 键 词：废旧橡胶 裂解 物料运动 传热 滚落运动模式 循环介质 EDEM软件 

分 类 号：TQ330.9[化学工程—橡胶工业] O241.82[理学—计算数学]