An example of where this can occur is a storage pile. The tendency of a coal to spontaneously combust or self-heat increases with increasing amounts of sulfur and moisture. They can occur in the form of balls, veins or lenses. This form of sulfur can be separated by washing. An inherent part of the coal that normally cannot be removed by washing.
Larger values indicate oxidation of the coal.
A manufactured product chemically similar in most respects to natural gas, resulting from the conversion or reforming of petroleum hydrocarbons. It may easily be substituted for, or interchanged with, pipeline quality natural gas. Also referred to as substitute natural gas. The amount of material that can move through a facility in a given time period. The determination of carbon, hydrogen, nitrogen, oxygen, ash and sulfur.