Muriatic acid flush for lime feed lines.
Muriatic acid flush for lime feed lines.
(OP)
It was recommended to periodically flush our lime feed lines with muriatic acid to dissolve any lime buildup. Anyone done this and how is the proper way to do it while the plant is in operation?





RE: Muriatic acid flush for lime feed lines.
When you say lime, do you mean CaCo3 build up? if so you will need to circulate either Hcl or sufphamic (sulfamic) acid through the line at approximately 10%.
We have a mobile acid cart with a tank and mag-drive kynar pump and connect the discharge from the acid pump at the head end of the line and the return from the other end of the pipe back to the tank using plastic flexible hoses.
You will need to circulate the acid solution through the line for at least 40 minutes.
You don't say the pipe size or length. Our pipes are approxiately 30' x 2" dia.
A word about sulphamic acid....
Sulphamic acid or sulfamic acid is a dry crystaline powder similar to sugar and is inert when dry. 25kg bags are available from any chemical supply company. As sulphamic is inert when dry only minimal safety precautions need be taken, you can get the MSDS for it on GOOGLE.
RE: Muriatic acid flush for lime feed lines.
RE: Muriatic acid flush for lime feed lines.
RE: Muriatic acid flush for lime feed lines.
Be careful as the heat of reaction between the lime and acid could be great enough to weaken the poly line and could rupture under excess pressure.
RE: Muriatic acid flush for lime feed lines.
RE: Muriatic acid flush for lime feed lines.
Also, be careful that your system doesn't come apart -- I used an air pressure regulator to drop plant air from 120 down to 70 psig.
RE: Muriatic acid flush for lime feed lines.
RE: Muriatic acid flush for lime feed lines.