PTA装置干燥机入口积料分析及处理方法  

Analysis and treatment method of material accumulation at the inlet of PTA drying machine

作　　者：李亮宏 Li Liang-hong(Urumqi Petrochemical Department,Urumqi 830019,China)

机构地区：[1]乌鲁木齐石化化工部,新疆乌鲁木齐830019

出　　处：《聚酯工业》2025年第2期53-55,共3页Polyester Industry

摘　　要：PTA装置是典型的化工装置,其干燥工序由于物料呈粉末固态,通常选用非标设备。在2006年之前,PTA装置的干燥机一直依赖进口设备。离心分离后的固体物料通过螺旋输送至干燥机入口下料槽,再由干燥机入口螺旋推入干燥机内进行干燥。改造前,由于干燥机入口螺旋积料和气相通道不畅,经常出现干燥效果不佳的情况,具体表现为入口螺旋高电流跳停、出口气送线安全阀起跳,导致生产中断。通过对干燥机入口螺旋结构的分析,找到了导致干燥机入口积料和气相通道堵塞的原因,并针对性地对干燥机入口螺旋结构进行了改进。改进后,成功消除了干燥机入口积料及气相堵塞问题,解决了制约PTA精制单元干燥机长期稳定运行的难题。PTA plant is a typical chemical plant,and its drying process usually uses non-standard equipment because the materials are in powder solid state.Prior to 2006,PTA plant dryers relied on imported equipment.The solid material separated by centrifugation is transported by a screw to the discharge chute at the inlet of the dryer,and then pushed into the dryer by the screw at the inlet for drying.Before the renovation,due to the blockage of the spiral material accumulation and gas phase channels at the inlet of the dryer,the drying effect was often poor,manifested as high current tripping of the inlet spiral and safety valve tripping of the outlet gas delivery line,resulting in production interruption.Through the analysis of the spiral structure at the inlet of the dryer,the causes of material accumulation and gas phase channel blockage were identified,and targeted improvements were made to the spiral structure at the inlet of the dryer.After improvement,the problems of material accumulation and gas phase blockage at the inlet of the dryer were successfully eliminated,solving the problem of long-term stable operation of the PTA refining unit dryer.

关 键 词：干燥机 积料 改造 

分 类 号：TQ313[化学工程—高聚物工业]