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.
Identifying an item that is obviously a collectible - something less than 100 years old - as an antique makes savvy buyers feel like you're just trying to pull one over on them. It can also make you look ignorant about what you're selling, or even worse, dishonest. If an object is obviously newer than 100 years in age, just call it a collectible. If you honestly feel like an item is over 100 years in age after doing your homework, then it's perfectly fine to describe it as an antique.