For a 30m3 vertical hydrochloric acid storage tank, should it be made of reinforced polypropylene or fully plastic rotomolded PE?
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The facility needs to install two vertical hydrochloric acid storage tanks with a capacity of 30 m3 each. Fiberglass-reinforced plastic would be a good choice, but the quality of fabrication by local fiberglass manufacturers is not very good, so it’s not desired to use that material. Processed with polypropylene? I think the welds produced during polypropylene processing are a problem; I’m always a bit worried about them ； I’m considering using fully plastic rotomolded PE storage tanks now; I think that since rotomolding eliminates welds, the tanks should be more reliable. Is that true? The thickness of the tank used is 25 mm, so this thickness should be fine. Please give me some advice, thank you!
Each has its advantages and disadvantages. Fiberglass is commonly used, but the market is currently chaotic; prices cannot rise, and some companies lack a strong sense of quality, which makes them hesitant to use it. Use pp; it needs to be thick, mainly regarding welding quality and structure. When using a steel-lined PO, there are issues related to quality control. However, with a steel-lined PO, any problems will become apparent quickly, and it is relatively easy to carry out repairs.
1. Polypropylene is generally used for smaller storage tanks; it is not suitable for containers of this size, mainly because over time polypropylene ages and undergoes stress-induced deformation. High cost. 2. It is recommended to use carbon steel lined with PE; a thickness of 10 mm for the carbon steel shell is sufficient, while 12 mm is required for the bottom head.