Of all the fuels here, this is probably the easiest one to understand. It’s a blend of charcoal and hickory sawdust (from lumber manufacturing) extruded into a pellet for fueling your pellet grill.
This is bark, sawdust, shavings, and chips—the waste product from sawmills and wood-processing plants. It’s burned in an industrial boiler, furnace, or kiln.
Even the people that know and love Bunker describe it as nasty stuff. Often used for commercial ships, it’s the heavy, viscous oil (otherwise known as Heavy Fuel Oil, or HFO) left after the refining process removed the lighter, cleaner, and more volatile products. It’s burned in industrial boilers, furnaces, and, interestingly enough, sophisticated gas turbines.
No, not the soft drink. Metallurgical-grade coke is the material left after bituminous coal is baked in an oxygen-free oven to drive off volatiles, which themselves are burned to produce energy. Nearly pure carbon is left. This high-carbon Coke, iron ore, limestone (and sometimes anthracite coal) are fed into a blast furnace to produce pig iron, the primary ingredient in cast iron and steel.
It sounds like a contradiction in terms. Natural and gasoline don’t seem to go together. Also known as C5, natural gasoline is a liquid condensate that is produced from natural gas liquids. It’s used as a feedstock to produce motor gasoline.
Other products produced in so-called midstream processing are: ethane, propane, butane, and iso-butane.
Originally posted on Popular Mechanics