Monday, 20 October 2014

Thermal technique makes clean crude replacement from mixed plastic waste

Waste plastic could become a more valuable commodity following the development of a process that turns mixed plastic waste into a hydrocarbon-based product.



This is the assessment of Adrian Haworth, sales and marketing director of Recycling Technologies, a company that has developed WarwickFBR, a recycling system that converts mixed plastic waste (MPW) into PlaxOil, a heavy fuel alternative that that can be sold or used in localised on demand combined heat and power (CHP) plants.

Haworth explained that the PlaxOil is produced by its WarwickFBR system following pyrolysis of MPW. To do this, the system first shreds and dries the MPW. It then injects blended product into a fluidised bed where the long hydrocarbon chains in the polymers are broken down by pyrolysis - a multi-step process in which organic materials are decomposed by heat in the absence of oxygen - to form an energy rich gas. This gas is then filtered to remove contamination, cooled and condensed to provide PlaxOil.

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