Is low volatile matter in coal Good?
By Penelope Carter
Is low volatile matter in coal Good?
Low volatile coals are capable of replacing more coke due to their high carbon content and calorific value.
What is the role of volatile matter in coal?
Volatile matters are the methane, hydrocarbons, hydrogen and carbon monoxide, and incombustible gases like carbon dioxide and nitrogen found in coal. Thus the volatile matter is an index of the gaseous fuels present. Proportionately increases flame length, and helps in easier ignition of coal.
What is the significance of volatile matter in coal?
Volatile matter is one of the most common parameters measured in coal. It is part of a standard proximate analysis. Volatile matter is essentially a measure of the nonwater gases formed from a coal sample during heating.
What is the effect of volatile matter in combustion process?
Thus the volatile matter is an index of the gaseous fuels present. Typical range of volatile matter is 20 to 35%. Proportionately increases flame length, and helps in easier ignition of coal.
What is coal density?
Coal is slightly denser than water (1.0 megagram per cubic metre) and significantly less dense than most rock and mineral matter (e.g., shale has a density of about 2.7 megagrams per cubic metre and pyrite of 5.0 megagrams per cubic metre).
What is volatile matter coal?
Volatile matter is defined as the gases driven off when coal is heated to 950°C (1742°F) in the absence of air under specified conditions and is consisted of short and long chain aliphatic carbon atoms (linked in open chains) or aromatic hydrocarbons (one or more six-carbon rings characteristic of benzene series) and …
How are volatile substances affected by surface conditions?
At a given temperature a more volatile substance will more readily turn to gas as the molecules escape from the surface, such as solvents and paint, shown in Figure 1. Thus the more volatile a substance is, the lower vapour pressure it has.
