Coking is a refinery process that produces 19% of finished ...
Coking is a refinery unit operation that upgrades material called bottoms from the atmospheric or vacuum distillation column into highervalue products and, as the name implies, produces petroleum coke—a coallike material. Exports of petroleum coke accounted for about 19% of the nation''s finished petroleum product exports through October 2012 with most going to China and other Asian countries.