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The term "lamp oil", or the equivalent in the local languages, is common in the majority of Asia and the Southeastern United States, although in Appalachia, it is also commonly referred to as "coal oil". [7] Confusingly, the name "paraffin" is also used to refer to a number of distinct petroleum byproducts other than kerosene.
A kerosene lamp produced by the factory of Karlskrona Lampfabrik in Sweden c. 1890s Swiss flat-wick kerosene lamp. The knob protruding to the right adjusts the wick, and hence the flame size. A kerosene lamp (also known as a paraffin lamp in some countries) is a type of lighting device that uses kerosene as a fuel.
Other names, similarly imprecise, include 'white oil', 'paraffin oil', 'liquid paraffin' (a highly refined medical grade), paraffinum liquidum , and 'liquid petroleum'. Most often, mineral oil is a liquid obtained from refining crude oil to make gasoline and other petroleum products .
An oil lamp is a lamp used to produce light continuously for a period of time using an oil-based fuel source. The use of oil lamps began thousands of years ago and continues to this day, although their use is less common in modern times.
The major use of the Wells light was for the illumination of outdoor construction work. They were portable and simple to operate. Their fuel was cheap and commonly available, especially as the Wells' pressure burner could burn a much lower and cheaper grade of oil than the lamp paraffin that was pure enough to not clog a wick lamp.
For refineries, the interest has been primarily focused on the distribution between the distillation fractions: petrol, paraffin, gas oil, lubricant distillate, etc. Refiners look at the density of the crude oil – whether it is light, medium or heavy – or the sulfur content, i.e. whether the crude oil is “sweet” or “sour”.