Can trisodium phosphate be added to the remaining boiler drum over the long term?
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Is it appropriate to continuously add trisodium phosphate to the drum of the hydrogen production waste heat boiler in our company in order to maintain the pH level? Can it cause trisodium phosphate crystals in the superheated steam pipes?
It generally gets reacted, and part of it is carried away by the steam; the key is the proportion added
Adding trisodium phosphate is mainly to prevent structural issues, but it should not be used in excess; the amount to be added can be controlled based on the level of phosphates present, and there is no problem with using it over the long term
Adjustments should be made based on the results of the soda sampling tests, right?
Do medium-pressure boilers also require phosphate testing?
It depends on the water quality; adding too much leads to scaling and waste
It is acceptable to add an appropriate amount of phosphate to prevent scaling in the boiler
There are requirements, especially when the generated steam is used in turbines. In the catalytic unit, the pressure of the steam drum is 3.5 MPa, and the phosphate level is 5–15. MTO units also face this issue: in order to control the pH value and reduce the amount of chemicals added, is it really worth it? ! I’ve also posted a question for discussion recently regarding the quality issues of furnace water: http://bbs.hcbbs.com/thread-1485405-1-1.html (Source: Haichuan Chemical Industry Forum)