12505 running status 12505 train 12505 train running status north east ex today's time of northeast express up northeast sf express running status.
Refining is the process of reducing the impurities in a substance. You can't turn crude oil into gasoline without first refining it. Refining is nowadays most commonly associated with the processing of petroleum products such as oil and gas, but it also applies to precious metals, especially those used in jewelry. Sugar is another substance that undergoes refining, which makes it less grainy and more consistent.
Refining separates crude oil into components used for a variety of purposes, from high-performance fuels to plastics. The Facts About Crude Oil. The refining process begins with crude oil. Crude oil is unrefined liquid petroleum, which ranges in color from yellow to black, and may have a paraffin, asphalt or mixed base.Crude oil is composed of thousands of different chemical compounds called hydrocarbons, all with different boiling points.he Refining Process. Generally, crude petroleum is heated and changed into a gas. The hot gases are passed into the bottom of a distillation column and become cooler as they move up the height of the column.