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Wednesday, 6 July 2011

Plastic2Oil process turns plastic waste into fuel
July 4, 2011

While a lot of people may be doing their part for the environment by sending their discarded plastic items off for recycling, the fact is that much of the plastic currently in use is non-recyclable. In a not particularly eco-friendly process, some of this plastic is burned to generate electricity, while much of it simply ends up in landfills. Canadian company JBI, however, has developed a process that uses those plastics as a feedstock, and turns them into fuel.

JBI's Plastic2Oil process starts with a variety of unwashed post-commercial and industrial non-recyclable plastics, which are fed through a shredder and a granulator - the system can handle up to 1,800 pounds (816.5 kg) at a time. It is then heated in a process chamber, after which it proceeds into the main reactor. There, a proprietary (read "secret") reusable catalyst is used to crack the plastic's hydrocarbons into shorter hydrocarbon chains, which exit the plastic in a gaseous state. Those gases are captured, compressed and stored.

Gases containing gasoline and diesel can be condensed and separated, the resulting liquid fuel then temporarily stored in tanks. Methane, ethane, butane and propane "off-gas" out of those tanks, and are subsequently compressed and stored themselves. The butane and propane liquefy upon compression, allowing them to be separated, stored and sold, while the others are used to help power the system. Emissions that make it into the atmosphere are said to be less than those that would be produced by a natural gas furnace.
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