padovano
Petroleum
- Dec 13, 2006
- 73
Dear All, I am presently monitoring 2 boilers with a pressure of 17 bars . The pH of the boiler waters has falling to below 10.5. I will like to note that the pH of the make up water is about 9.2, that of the feed water is 9.5. A phosphate agent is added to the feed water on its way to the boilers. Morpholine is also added to the storage tank of demineralise water and also to the feed water drum. an oxygen scavenger is added to the feed water drum also.
I had TAC analysis of about 13.6F. pH value of 10.4, Phosphate 56mg/l. TA of 6. The Percentage openning of continuous purges, the tonnage of the boiler did not vary in 24 hrs but the result obtained after 24hrs declined, i.e TAC= 9.8, pH = 10.1, TA = 3.5. What I really want to understand is how to increase the alkalinity of the boiler waters. The boiler is a water tube boiler. I expected the TAC to have increased after 24 hrs with the same tonnage of the boilers.
I had TAC analysis of about 13.6F. pH value of 10.4, Phosphate 56mg/l. TA of 6. The Percentage openning of continuous purges, the tonnage of the boiler did not vary in 24 hrs but the result obtained after 24hrs declined, i.e TAC= 9.8, pH = 10.1, TA = 3.5. What I really want to understand is how to increase the alkalinity of the boiler waters. The boiler is a water tube boiler. I expected the TAC to have increased after 24 hrs with the same tonnage of the boilers.
