The boiler water alkalinity is too high; please share some suggestions!
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This post was last edited by zgj2405 on 2010-12-11 at 16:38. It deals with a 15-ton fluidized bed furnace; the quality of the feed water is satisfactory, and chemical dosing has been stopped for a long time. Yet, the alkalinity of the furnace water remains above 20, sometimes even exceeding 30. Despite frequent waste discharge during each shift, it’s still not possible to bring down the alkalinity level. Please share any suggestions! Background: The boiler was previously pickled, and after pickling, chemicals such as descaling agents and trisodium phosphate were added.
Alkalinity needs to be adjusted through continuous blowdown control; it is not advisable to rely on periodic blowdown control to manage the alkalinity of the boiler water. Furthermore, the concept of qualified water supply is also quite vague; specific criteria should be specified.
There’s a problem with your water softening system! !
The quality of our boiler feed water: hardness is less than or equal to 0.03 mmol/L, pH = 7, and alkalinity = 5. Could the friend upstairs explain it more clearly?
The alkalinity of the water you’re using for replenishment is still too high. We have just carried out a water replenishment modification for a 20t furnace; the alkalinity level is 6. Various adjustments to the water replenishment process have not worked over the past few years, so this year we switched to reverse osmosis. The problem has been completely resolved. It’s just that the cost is a bit high.