What kinda additives do we normally use? Also, since we are using condensate which is avail at 130 F to mix with the acid powder (to make 3% wt solution), I would assume we would need to cool down the condensate before mixing to avoid corrosion.
Thanks Syd. I did some investigation too and found that sulfamic acid is an acceptable and a widely used descaling agent, the concentration ranging from 2-5 %wt. All I need to find out is confirm the mixing temperature of water and the acid powder. As you suggested, if the temperature is too...
We'll have an acid wash pump to circulate the acid. We have been using this acid for yrs and never had any problems with it. As I mentioned, we are jus trying to optimise it. I been trying to get hold of the acid manufacturers to get an answer on this.
What should be the optimum temperature and concentration of sulfamic acid to be effective as a descaler for heat exchanger? The scaling in my case is from calcium, some protein (we have yeast cooler application also). We been using the evaporator condensate (temp 120-150F) and dump it in a SS...
