petroleum processing

1. a process of separation of solids from liquids or gases by interposing a medium through which only the fluid can pass
4. column a cylindrical tower in which a compressed gaseous oil is stored
5. to use a chemical substance or process to clean or preserve substances
6. a chemical element with symbol S a yellow solid,non-metal, brittle (easily broken) and crystalline, it burns easily releasing toxic fumes
7. point the temperature at which the liquid changes into a vapour
8. an amount of a larger molecule that remains after its distillation and evaporation
9. to convert a substance from its liquid state to its gas phase
11. to change the physical state of a substance from a gas to a liquid
12. flat stainless steel boards in the cylindrical tower

1. a separation process in which a certain quantity of a mixture is divided during its phase transition into smaller quantities called fractions
2. oil found in its natural state
3. an elecrical conductor through which electricity can flow
10. a plant or factory that purifies oil
11. oxide a compound from the two elements copper and oxygen (Cu2O or CuO or Cu2O3)