Abstract:

Abstract:For the problems that existed in the conventional circulating cooling water treatment technology of coal fired power plant,such as poor dosing accuracy,delayed water quality analysis and monitoring,and unstable concentration ratio,etc.This paper proposed a full automatic processing scheme for recirculating cooling water,which could realize theauto additionof anti scale corrosion inhibitor and bactericide,autocontrol ofthe cooling waterblowdown,online monitoring of the pH,corrosion rateof metal, turbidity,fouling resistance,fouling deposition rate,adding quantity of water and drugs,etc.In addition,the scheme also could make a predictionbefore problem occurs and deal with the problem in time.In short,the realization of full automatic process of recirculating cooling water improves the operation security of recirculating cooling water system, saves water,reducesoperation costsand promotes operation management efficiency.

Key words: Keywords:recirculating cooling water, automation control, concentration ratio, fouling resistance