As a subject matter expert in the field of petroleum refining and energy, I have a deep understanding of various fuels and their applications. Straight run fuel oil, also known as atmospheric residue, is a product that is derived directly from the distillation process of crude oil. It is the heavier, less volatile fraction that remains after lighter components such as gasoline, kerosene, and diesel have been removed from the crude oil. This process is known as atmospheric distillation, which is a physical separation technique that relies on temperature differences to separate components.

Straight run fuel oil has a variety of uses due to its unique properties. Here are some of the primary applications:


1. Heating Oil: One of the most common uses of straight run fuel oil is as a heating medium in industrial and commercial settings. Its high energy content makes it an efficient source of heat.


2. Marine Fuel: In the maritime industry, straight run fuel oil is used as a bunker fuel for large ships. It is a cost-effective option for powering marine engines over long distances.


3. Power Generation: Some power plants, especially those that are older or less technologically advanced, may use straight run fuel oil as a source of energy for generating electricity.


4. Manufacturing Process: In certain manufacturing processes, particularly in the production of cement or glass, straight run fuel oil is used as a source of heat to facilitate high-temperature reactions.


5. Refinery Feedstock: While straight run fuel oil has its direct uses, it can also serve as a feedstock for further refining processes. Refineries may subject it to vacuum distillation or catalytic cracking to produce additional valuable products like lubricating oils and other hydrocarbons.


6. Construction and Mining: In construction and mining industries, heavy machinery often requires a reliable and powerful fuel source. Straight run fuel oil meets these requirements, providing the necessary power for heavy equipment operation.

7.
Emergency Backup: In situations where the main fuel supply is disrupted, straight run fuel oil can serve as an emergency backup fuel for power plants and other facilities that rely on a continuous energy supply.

It is important to note that the use of straight run fuel oil has been declining due to environmental regulations and the push for cleaner energy sources. However, it still plays a significant role in certain sectors where its properties are particularly advantageous.

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Straight run fuel oil is the residue that comes out from the distillation column, without further processing in vaccum distillation unit or residue catalytic cracker.read more >>