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.
Antique Jewelry. Antique jewelry (or jewellery as it is spelled in Britain) or the term antique is used to mean different things. The most accepted definition is any object that is over 100 years old in age. Of late, some use the term to mean anything over 75 years old. This is a more recent interpretation given the scarcity of antiques in today's marketplace. The Three Graces features period fine jewelry and most of our collections fall well within the antique (over 100 years old) realm.