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.
The difference between fine jewelry and costume jewelry is the quality of the metal used in the jewelry and the authenticity of the stones set into the pieces.Additionally, fine jewelry can last for generations, and it is often considered an investment or something worth collecting and passing down to family members.ostume jewelry first appeared in the 1930s. Wearing costume jewelry was a way to embellish a costume or an outfit. When the term costume jewelry is used today, it is sometimes interchanged with the term fashion jewelry. Both have become synonymous with one another.