Crude oil topping units fill a need for crude oil producers that have domestic requirements for diesel, fuel oil, kerosene, AGO, LPG or asphalt but donât have total refining capacity. Essentially they are atmospheric distillation units that produce hydrocarbon boiling point cuts from resid to LPG. topping unit is an inexpensive, technically simple means to enhance the value of crude oil near the source of production. Crude oil distillation is an energy intensive process that requires crude oil heaters with cross heat exchangers.
In the U.S., the legal definition of an Antique is any item over 100 years old. The term Vintage is used to describe something that is second generation or older. So the toys your parents played with, or the clothes they wore when they were your age would be considered Vintage but not Antiques.
An antique item can be a vintage item, but it is not necessarily the other way around. While antique refers to the object itself, vintage is a reference to what time the object was made. It is believed that an antique item must be at least 100 years old. A vintage item can be of any time and era. Summary: Antique vs Vintage â¢ Antique and vintage are used to describe old things, mostly collectibles. Most antique and vintage objects are valuable because of their rarity or uniqueness or quality.