Differences between external floating roof storage tanks and internal floating roof storage tanks

The process of sending and receiving the stored liquid is the same. The difference between the external floating roof tank and the fixed roof internal floating roof tank is as follows: 1. Both can greatly reduce the evaporation loss; 2. Under the same sealing effect, the internal floating roof tank The evaporation loss can be further reduced than that of the external floating roof tank, because the shielding of the fixed roof and the gas phase layer between the fixed roof and the inner floating plate have a more significant thermal insulation effect than the double disk floating roof of the external floating roof tank . 3. The liquid surface of the floating tank is covered by the floating roof, which isolates the liquid storage in the tank from the air, reduces air pollution and the risk of fire and explosion, and is easy to ensure the quality of liquid storage, especially suitable for storing high-grade gasoline, jet fuel and toxic and easily polluted liquid chemicals 4. Compared with the internal floating roof storage tank, the external floating roof storage tank has many advantages, the application range is wider and wider, and it is a promising storage tank. A well-designed internal floating roof tank is the best way to control evaporative losses from a fixed roof storage tank with the least investment. In the case of ketones, internal floating roof tanks can be used to store volatile petroleum products such as gasoline and jet fuel, as well as liquid chemicals such as aldehydes, alcohols (methanol, ethanol) and benzene (benzene, toluene, xylene, styrene). 5. Fixed-roof storage tanks include inner floating-roof tanks, which can effectively prevent sand, rain, snow or dust from contaminating liquid storage tanks and ensure the quality of liquid storage tanks under various weather conditions, so they are called 'all-weather storage tanks' 6. The inner floating plate of the inner floating roof tank is different from the floating plate of the upper opening of the outer floating roof tank, so there is no possibility of rain and snow load. The load on the inner floating plate is small, the structure is simple and light, and the accessories such as the central drain pipe and the rotating floating ladder on the floating plate can be omitted. Easy to construct and maintain, the material of the sealing part can avoid the aging caused by sunlight.