热风循环干燥设备安全节能改进技术  

Safety and Energy-saving Improvement Technique of Heat Recirculation Dryers

作　　者：田震[1] 戴卓 宋博达 

机构地区：[1]华南理工大学化工机械与安全工程研究所

出　　处：《化工机械》2017年第6期638-642,678,共6页Chemical Engineering & Machinery

基　　金：广州市科技计划产学研合作专项(2013Y2000099)

摘　　要：针对热风循环干燥设备安全性能差、节能效率低的问题,应用模拟分析和本质安全设计方法,提出安全节能改进思路,确定了充氮控氧、抽真空排气和密闭全循环的干燥工艺,并设置氮气双进气、双排气回路以维持干燥罐内微正压(不大于0.1MPa)。使用ISI法评价设备改进前后的本质安全度,本质安全指数从26降至17。能效检测结果表明:改进后设备能耗降低了82.5%,干燥效率提高66.7%,设备本质安全和节能改进效果显著。Considering poor safety performance and low energy-saving efficiency of heat recirculation dryers, adopting methods of simulation analysis and intrinsic safety design to investigate the safety and energy-saving improvement ideas were implemented, including determination of the drying process of nitrogen charge and control, vacuum exhaust and closed and full cycle as well as the setting of nitrogen＇ s two-inlet and dual-exhaust loops so as to maintain a micro-positive pressure（ ≤0.1MPa） in the drying chamber. Making use of the ISI method to improve intrinsic safety degree of the dryers can reduce safety index from 26 to 17. The energy efficiency testing results show that, the energy consumption can be reduced by 82.5% and the drying efficien- cy can be increased by 66.7% together with a significantly improved safety and energy-saving effect.

关 键 词：干燥设备 爆炸 节能 热风循环 本质安全 

分 类 号：TQ055[化学工程]