The Dangote Refinery is an oil refinery owned by Aliko Dangote that is under construction in Lekki, Nigeria. When completed, it is expected to have the capacity to process about 650,000 barrels per day of crude oil, making it the largest single-train refinery in the world. The investment is over 25 billion US dollars.
The refinery is situated on a 6,180 acres (2,500 hectares) site at the Lekki Free Trade Zone, Lekki, Lagos State. It is supplied with crude oil by the largest sub-sea pipeline infrastructure in the world (1,100 km long). When fully operational it will be expected to provide 135,000 permanent jobs in the region.
The Dangote Oil Refinery will have a Nelson complexity index of 10.5 which means that it will be more complex than most refineries in the United States (average 9.5) or Europe (average 6.5). (The largest refinery of the world, the Jamnagar Refinery in India, has a complexity of 21.1.) The Nelson complexity index basically increases with the number and capacity of chemical procedures after the distillation, e.g. hydrocracking, NHT, CCR, RFCC, polymerization, etc.
In 2019, the world's largest crude distillation column, weighing 2,350 tons, was installed in place at the Dangote refinery by a specialist Dutch company. With a height of 112 meters, it is slightly taller than the Saturn V rocket which brought the first man to the moon (110.6m), and is 16 meters taller than Big Ben.
In the same year, three more records were set when the world's heaviest refinery regenerator was installed - having already been the "heaviest item ever to be transported over a public road in Africa" at a stately 3,000 tons and also being "the heaviest single piece of steel structure" of the world. As a part of the RFCC (Residue Fluid Catalytic Cracker) a regenerator boils heavy crude oil components until their molecules break up and turn into lighter molecular components like gasoline, kerosene, etc. This improves the efficiency of turning crude oil into more valuable components.
According to Wikipedia