能量回收型脱湿工艺探讨

Discussion on energy recovery dehumidification process

目前常用的脱湿技术为冷凝降温技术,通过冷水机组制得冷冻水,送入脱湿器实现湿空气的降温脱湿。该技术不能有效利用脱湿的冷凝水冷量,且脱湿后的湿空气携带液态水会对后续生产设备和管道造成影响。文章提出一种能量回收型脱湿工艺,通过冷凝水冷量回收和脱湿后湿空气再热,提高入炉空气干度和温度,降低冷却塔循环水进出口水温温差,减少循环水蒸发水耗。结果表明:与传统冷冻脱湿工艺相比,能量回收型脱湿工艺可以降低系统冷量1.3%~1.9%,循环水回收湿空气冷量约占整个循环水冷量的12.3%~18.8%。

The condensation and cooling technology is used dehumidification technology.The chilled water is prepared by the chiller and sent to the dehumidifier to cool and dehumidify the wet air.The technology fails to effectively use the cooling capacity of condensate water,and the liquid water carried by the dehumidified wet air will affect the subsequent production equipment and piplines.An energy recovery dehumidification process is proposed.Through the recovery of condensate water cooling capacity and the reheating of wet air after dehumidification,it can save energy,improve the dryness and temperature of incoming air,reduce the temperature difference between the inlet and outlet of circulating water in the cooling tower,and reduce the evaporation water consumption of circulating water.The results show that compared with the traditional condensing dehumidification process,the energy recovery type dehumidification process can reduce the system cooling capacity by 1.3%~1.9%,and the circulating water recovery wet air cooling capacity accounts for about 12.3%~18.8%of the whole circulating water cooling capacity.