零气耗余热再生式干燥器节能改造和优化

Energy-savingretrofit and optimization of zero air consumption waste heat regenerative dryer

余热再生式干燥器是利用空压机压缩热进行再生吸附水分,传统余热再生式干燥器为了保证性能稳定,利用成品气反吹,存在一定能源损耗。本文针对该问题进行分析,对干燥器流路进行改造,时序进行优化调整,对阀门切换进行试验,在保证输出压空露点合格的情况下,改造成零气耗余热再生式干燥器。新干燥器解决了反吹气源的损耗和换塔前后压力波动等问题,避免了压缩机的喘振,甚至联锁停机,保证设备的安稳运行。

The waste heat regenerative dryer uses the compression heat of the air compressor to regenerate and adsorb water.In order to ensure stable performance,the traditional waste heat regenerative dryer uses the product gas to backflush,and there is a certain energy loss.This paper analyzes this problem,transforms the flow path of the dryer,optimizes and adjusts the timing sequence,and conducts experiments on valve switching.Under the condition that the output dew point is qualified,it is transformed into a regenerative dryer with zero gas consumption and waste heat.The new dryer solves the problems of backflushing air source loss and pressure fluctuation before and after tower replacement,avoiding the surge of the compressor,and even interlocking shutdown,ensuring the stable operation of the equipment.