The chloride content in the slurry of the desulfurization unit is relatively high

Thread Content

I would like to ask the experts: in the catalytic flue gas desulfurization unit, which uses wet desulfurization, I have recently noticed that the chloride content in the slurry is relatively high, at around 450 mg/l, while the acceptable limit is 500 mg/l； The desulfurization unit uses fresh water and the drain water from the drum as cooling media ； Washing liquid is ammonia-injected, with a concentration of about 20% ； The cooling media include: drum condensate water at a flow rate of 17 t/h with chloride levels of 30 mg/l; fresh water at a flow rate of 10 t/h with chloride levels of 160 mg/l; and wastewater discharged at a flow rate of 20 t/h. The evaporation rate is approximately 8 t/h ； Under the above operating conditions, is the chloride content within normal limits? ； What is the level of other devices? Consult the design institute; it’s best to keep the feedback within 200 characters ； My installation isn’t capable of handling it, and it’s also not possible to use demineralized water – the cost is too high. What mainly causes chlorides? Besides cooling water, is there any relation to flue gas? I hope the experts here can share their insights and advice