Abstract:

Refrigeration process is applied to the chilled water at the lower stage of COG cooler,and open cycle is switched to closed cycle,so that water temperature is reduced by 10~15℃,meeting the process requirement.After comissioning and start-up,cooling water flow reaches 200m3/h,CO2 emission is reduced by 12 000t/a,steam recovered by 69 120t/a,and water saved by 1 400 000m3/a.The energy saving and emission reduction effect is remarkable.