Advantages of FRP storage tank:
The specific gravity of FRP is usually 1.8-2.1, which is 1 / 4-1 / 5 of that of steel, which is higher than the specific strength of steel, cast-in-place and plastic. The thermal expansion coefficient of FRP is roughly the same as that of steel, and the thermal conductivity is only 0.5% of that of steel.
FRP containers and FRP storage tanks are resistant to chemical corrosion and have long service life: FRP has special corrosion resistance. When storing corrosive media, FRP shows incomparable advantages over other materials and can resist a variety of acids, alkalis, salts and organic solvents.
The design flexibility of FRP container and FRP storage tank is large, and the structural performance of tank wall is excellent: fiber wound FRP can change the resin system or reinforcement materials to the physical and chemical properties of high-speed FRP storage tank and non-standard devices, so as to meet the needs of different media and working conditions. Through the structure and design of structural layer thickness, winding angle and wall thickness, the bearing capacity of the tank body is adjusted to make FRP storage tanks and non-standard devices with different pressure levels or some special properties, which can not be compared with isotropic metal materials.
At present, FRP oil storage tanks have been used in petrochemical plants, urban gas stations and oil fields in developed countries for a long time. FRP buried oil storage tanks have been designed into a series of products for users in Europe, the United States, Japan and other regions. Because FRP storage tanks have many special characteristics, such as durability, corrosion resistance, good seismic performance and so on, it is a definite trend for FRP storage tanks to replace steel storage tanks. The economy of FRP storage tank should be weighed by comprehensive indicators such as raw material cost, installation cost and maintenance cost. The price of FRP storage tank is generally higher than that of steel storage tank, but its installation and maintenance cost is low and its service life is long. Therefore, the long-term economic and social benefits of FRP storage tank are very superficial.
Service and protection of FRP tank: it is forbidden to exceed the service conditions specified in the contract: FRP tank is specially designed and manufactured according to the service conditions of the contract. Without the consent of the supplier's technical department, the user shall not change the category of FRP tank storage medium, nor the temperature and concentration of vessel storage medium. No hard object impact or scratch: when entering the FRP tank for cleaning and maintenance, the operating members shall wear soft soled shoes. When using the ladder, all points in contact with the utensils shall be covered with soft pads to prevent scratching the appearance. Avoid hitting utensils with tools, scaffolding and other hard objects when working around. Attention to fire prevention: the FRP tank is completely prohibited from being close to the fire source.
However, there are many reasons that lead to the leakage of FRP storage tanks, including poor compatibility of raw materials, obvious differences in the structural design and process design of FRP storage tanks, obvious differences in each process and specific links in the manufacturing process of FRP, as well as factors in the supply quality of raw materials and FRP facilities. By standardizing the supply channels of raw materials, strengthening the quality supervision of the production process, adopting semi-automatic advanced production technology and other measures to ensure the production quality, and scrupulously abiding by the design, construction and acceptance specifications to ensure reasonable design and high-quality construction, the safety and reliability of the envoy can be guaranteed.
