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 object of considerable age valued for its aesthetic or historical significance. In the antiques trade, the term refers to objects more than 100 years old. Some dealers are attempting to lower the standard of an antique. They believe that items over 50 years old should be considered an antique. Those who are reputable antique dealers say the 50 years definition lowers the standard to a point that dealers can sell collectibles under the name of antiques. This leads us to the word Collectible.