On the choice of the type of electric heating of the oil pipeline

Published on:

2023-02-02 15:00

Crude oil refers to "unprocessed" oil, that is, raw materials extracted directly from the ground, and it is also called oil. Crude oil is a fossil fuel, meaning it was naturally formed by the decomposition of ancient marine plants and animals that lived millions of years ago-wherever you find crude oil, there was once a seabed.

Crude oil varies in color (from transparent to charred-black) and viscosity (from watery to nearly solidified). A viscous oily liquid with a special odor, a mixture of alkanes, cycloalkanes, aromatic hydrocarbons, olefins and other liquid hydrocarbons. The main components are carbon and hydrogen, making up 83-87% and 11-14% respectively; a small amount of sulfur, oxygen, nitrogen and 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 ℃.

The heating of the pipeline must be monitored to avoid the solidification of crude oil and ensure normal transportation. Most businesses have abandoned the restrictions of traditional steam and water heating, and electric heating is becoming increasingly popular.

Electric heating is to use electric heat energy to supplement the heat lost by the heating body in the process to maintain the most reasonable process temperature of the flow medium. The oil pipeline uses electric heating to preserve heat to prevent crude oil from solidifying in the pipeline.

As to which electric heating cable is more suitable for oil pipelines, it should be judged according to the actual situation. If the crude oil pipeline is very long, extending for several kilometers or even tens of kilometers, the possibility of electric heating on the skin effect can be considered. The skin effect system does not require the use of a large number of electricity distribution facilities, it is a very economical solution, it allows you to track the heat of more than 20 kilometers of pipelines from one power supply point.

If the pipeline is relatively short, you can consider a self-regulating electric heating cable or a constant power electric heating cable. A large number of petrochemical enterprises have proved that electric heating cables are very effective in freezing protection and heat preservation of oil pipelines, can reach a given temperature range in a short time, have stable temperature, uniform heating, easy installation, easy maintenance, energy saving and environmental protection. Thanks to the advantages of long service life, It is widely used for freezing protection, heat preservation and anticoagulation equipment in petroleum, chemical industry, electric power, fire protection, natural gas, construction and offshore platforms.

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