Can the structure of glass-lined equipment be used for PTFE-lined equipment?
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Recently, the company received a batch of orders, but the design firm refuses to provide the designs; it’s steel-lined PTFE reactors, with glass-lined blanks covered in PTFE. Is this acceptable? The strength and material calculations meet the requirements. The medium inside the tank is hydrofluoric acid, so PTFE must be used; however, the structure should follow the standards for linings used in the production of blanks. I’m puzzled; a corrosion-resistant material is applied as a lining in all containers.
It seems there’s no such practice! Either glass-lined equipment or PTFE lining! I’ve never heard of glass-lined PTFE!
It uses a glass-lined standard blank, with PTFE lining on the inside
The structural corners of glass-lined equipment feature arc-shaped transitions, which is beneficial for plastic lining.
Yeah, I wonder what the design team was thinking – could it be that there were no standards to refer to?
Yeah, I wonder what the design team was thinking – could it be that there were no standards to refer to?
It’s just that the lining process is different; the technology for using PTFE as a lining should work.
Yes, what he means is that it is used as a standard for enamel-coated equipment: an iron base is lined with PTFE. The requirements regarding welding and stress relief, especially in terms of the R-angle, are higher for these enamel-coated iron bases compared to those made of ordinary carbon steel. As a result, the fluorine-lined equipment produced in this way is also of better quality than ordinary ones
Enameled with PTFE; PTFE offers corrosion resistance, but is the enamel strong enough?