Description
FRP Tanks
FRP (Fiberglass Reinforced Plastics, also known as GRP, or Glass Reinforced Plastics) is a modern composite material of construction for chemical plant equipment like tanks and vessels. Chemical equipment that ranges in size from less than a meter to 20 meters is fabricated using FRP as the material of construction.
FRP Chemical Equipment is manufactured mainly by Hand Lay-up and filament winding processes.
Tanks
A typical storage tank made of FRP has an inlet, an outlet, a vent, an access port, a drain, and an overflow nozzle. However, other features can be included in the tank. Ladders on the outside allow for easy access to the roof for loading. The vessel must be designed to withstand the load of someone standing on these ladders, and even withstand a person standing on the roof. Sloped bottoms allow for easier draining. Level gauges allow someone to accurately read the liquid level in the tank. The vessel must be resistant to the corrosive nature of the fluid it contains. Typically, these vessels have a secondary containment structure, in case the vessel bursts.
Varieties of FRP & Dual Laminate Tanks
- Cylindrical Vertical Tank
- Cylindrical Horizontal Tank
- Rectangular Tank
- Conical Bottom Tank
- Vertical Open Top Tank
Dual Laminate
Due to the corrosion-resistant nature of FRP, the tank can be made entirely from the composite, or a second liner can be used. In either case, the inner liner is made using different material properties than the structural portion. Hence the name dual (meaning two) and laminate (a word commonly used for a layer of composite material).
If the liner is not made of FRP, there are multiple choices for a thermoplastic liner. The engineer will need to design the tank based on the chemical corrosion requirement of the equipment. PP, PVC, PTFE, ECTFE, ETFE, FEP, CPVC, and PVDF are used as common thermoplastic liners.
Applications
FRP tanks and designed are widely used in the chemical industry in the following sectors: chlor-alkali manufacturers, fertilizer, wood pulp and paper, metal extraction, refining, electroplating, brine, vinegar, food processing, and in air pollution control equipment, especially at municipal wastewater treatment plants and water treatment plants.
FRP (Fiberglass Reinforced Plastics) used in Various Type Plants
- Chemical Plants (agrochemicals, chemicals for pharma industries, organic/inorganic chemicals, dyes, intermediates, specialty chemicals etc.)
- Fertilizers plants
- Textile Plant
- Edible Oil Industry
- Oil Refineries
- Beverage Plant
- Power Plant
- Wastewater & Effluents Treatment Plants
- Food Processing
- Pulp and Paper Factory
- Electroplating / Galvanization plants
- Metallurgical plants & Metal Finishing Industry
- Transportation
Materials of construction
If the liner is not made of FRP, there are multiple choices for a thermoplastic liner. The engineer will need to design the tank based on the chemical corrosion requirement of the equipment. PP, PVC, PTFE, ECTFE, ETFE, FEP, CPVC, and PVDF are used as common thermoplastic liners.
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