How To Choose Electric Heating Cable For Oil Tank Zone Insulation

Published on:

2023-02-02 15:10

Electric heating is to use the heat emitted by the electric heating belt itself to compensate and maintain the heat lost in the oil storage tank in order to maintain the most reasonable process temperature of the flowing medium. The electric heating is evenly laid on the surface of the tank. It is different from the high-concentration heating device in a small area. The electric heating has a low temperature gradient and strong thermal stability. The power is significantly lower than other electric heating decoration, which is suitable for long-term use.

Oil depot also refers to special equipment used for oil storage, due to the specifics of oil used for storage in the corresponding oil depot. The oil depot is a link for coordinating crude oil production, refining crude oil, supplying and transporting refined oil. Crude oil is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatic hydrocarbons and olefins. The main components are carbon and hydrogen, accounting for 83-87% and 11-14%, respectively, a small amount of sulfur, oxygen and nitrogen are also present, as well as trace amounts of phosphorus, arsenic, potassium, sodium, calcium, magnesium, nickel, Iron, vanadium and other elements. The specific gravity is 0.78-0.97, the molecular weight is 280-300, and the freezing temperature is-50-24 ℃. In order to prevent the oil product temperature from falling during the transportation process, which will affect the normal transportation, it is necessary to use electric heating to solve the freezing problem of the oil depot process pipeline.

Traditional electric heating mainly uses steam, hot water or heat transfer oil as heat transfer fluid, and then provides heat through jacketed pipes, coils, etc. D. However, each of these methods has its advantages and disadvantages. Although the source of steam heating is convenient, and the latent heat is great, its quantity is large, the technique is complex, and temperature control is difficult. Therefore, electric heating appeared. Simply because it can avoid the above disadvantages, it is widely used.

Generally speaking, both self-regulating electric heating cables and series-parallel constant power electric heating cables are used, but sequential constant power is typically used for long piping with or without multiple branches, and parallel constant power and self-regulating temperature are more suitable. For parallel chains More heating pipes.

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