The pressure tap on the SO3 pipeline is blocked
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The pressure tapping points on our pipes carrying the converted SO3 (at a gas concentration of 3%) often get clogged after cooling; I was wondering if any experts have any effective solutions. The temperature after cooling is around 80 degrees. There is a grayish-white substance on the inner wall of the detached pipe.
Hasn’t everyone encountered this problem? Why isn’t anyone responding?
Clogging of the flue gas sampling port is actually a common problem, especially with U-shaped sampling tubes, which cannot be cleared once they become clogged. What we do is install ball valves on the sampling flanges; if a blockage is detected, it can be cleared by using wire to push it through.
It means removing the flange and slowly pricking it with wire