We have several applications where charge solids into vessels via 8" and 6" diameter charge chutes. These vessels may contain organic solids. We have tried knife (gate) valves, qurter turn ball valves and butterfly valves and each failed for a variety of reasons:
Knife Valves get solids stuck...
We have a 10" rotary valve that handles a dry pharmaceutical solid. The valve body is cast 316 SS and the rotor is 304 SS.
We have seen surface corrosion on the interior surfaces of the valve inlet. It almost looks as if that portion of valve body is carbon steel clad with 316 SS. The rest...
We currently store Isopropyl Ether in a 20,000 gallon 316 SS Tank. The Isopropyl Ether was purchased with BHT added to stablize it against peroxide formation.
I need to get guidelines on how long we can store this material - turnover has been very slow. How we can test for peroxide formation...
