Can a steel-lined PTFE reactor reach 150°C? Is the technology for steel-lined PTFE high-temperature mixing tanks mature?
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It is understood that the temperature tolerance limit of steel-lined PTFE storage tanks is 120°C; currently, the operating temperature of some equipment is 150°C. It is not clear whether such steel-lined PTFE mixing tanks can be used in these conditions
Enameled glass is generally chosen; under normal conditions, PTFE deforms at such temperatures. If the new PTFE material you have developed can withstand such high temperatures, it should be usable, but this will need to be proven through practical use.
Technology is advancing rapidly these days, and the bonding process has been partially replaced by spraying processes. The original poster can consult relevant companies; there should be solutions available.
It is recommended to use PTFE spraying technology, which is what we use to manufacture PTFE transport tanks for our customers.
I’ve learned about it; this is the first time I’ve seen Teflon. We manufacture glass-lined equipment; glass lining works fine at temperatures below 200°C.
Perfluorinated materials have advantages in applications where glass-lined materials cannot be used as alternatives, such as environments containing fluoride ions.
Regardless of the manufacturing process, as long as two materials are used, there will inevitably be differences in their coefficients of thermal expansion and contraction. These differences become more apparent when the temperature changes significantly; layering tends to occur during start-up and shutdown processes. Therefore, special attention must be paid to controlling the rates of heating and cooling during operation.
It depends on the specific operating conditions. Generally, if enamel can meet the process requirements, then enamel should be chosen; otherwise, an appropriate Teflon material should be used.
Yes, there are quite a few products in the industry that can handle high temperatures these days； 1. Ountu tetrafluoro material can be used at high temperatures, but its anti-corrosion layer is very thin and easily damaged ； 2. Enameled steel is also an option, but its corrosion resistance is not as good as that of PTFE; it cannot be used for long periods in environments with strong acids or bases ； 3. The newly developed process of using PTFE-lined high-temperature plates is excellent; the temperature can be around 180°C, the thickness is not less than 3 mm, and its corrosion resistance is also very good, making it the preferred choice ；