The system uses liquefaction, pyrolysis and distillation of plastics. The system can handle almost all the End of Life Plastic that is currently being sent to landfills. A major advantage of the process is its high efficiency. Each plant can produce up to 19k litres of fuel from 20 tonnes of End of Life Plastic.
Current Situation of Recycling of Plastics
Various methodologies have been tried and tested to process waste or end of life plastics for many years, with recycling becoming the most common method reflecting the needs of today. Plastics that cannot be processed are handled by waste management companies mainly through land-filling or incineration.
The building or expanding of incinerators has become difficult due to opposition from governments and community groups with environmental concerns, most notably the levels of emissions.
Liquefaction of plastic is a superior method of reusing this resource. These distillate products are excellent fuels and make the Cynar Technology one of the best, economically feasible and environmentally sensitive recycling systems in the world today.
The synthetic fuels produced, given their low sulphur and high cetane qualities, will most likely be utilised by the recycling organisations on-site for use in the vehicle fleet as SITA plan to do or heavy equipment and generators.
Pyrolysis is a process of thermal degradation of a material in the absence of oxygen. Plastic is continuously treated in a cylindrical chamber and the pyrolytic gases condensed in a specially-designed condenser system to yield a hydrocarbon distillate comprising straight and branched chain aliphatics, cyclic aliphatics and aromatic hydrocarbons. The resulting mixture is essentially equivalent to petroleum distillate. The plastic is pyrolised at 370ºC-420ºC and the pyrolysis gases are condensed and liquid separated using fractional distillation to produce the liquid fuel products.
The essential steps in the pyrolysis of plastics
evenly heating the plastic to a narrow temperature range without excessive temperature variations
purging oxygen from pyrolysis chamber,
managing the carbonaceous char by-product before it acts as a thermal insulator and lowers the heat transfer to the plastic
careful condensation and fractionation of the pyrolysis vapours to produce distillate of good quality and consistency
The heart of the pyrolysis system is the prime chamber, which performs the essential functions of homogenisation and controlled decomposition in a single process. The process requires minimal maintenance and produces a consistent quality distillate from End of Life Plastic..
The key to an efficient pyrolysis process is to ensure the plastic is heated uniformly and rapidly. If temperature gradients develop in the molten plastic mass then different degrees of cracking will occur and products with a wide distribution of chain lengths will be formed.
Cynar has signed an Agreement with Loughborough University in the UK to Partner in the further advancement/optimisation of the Cynar Technolgy and is also looking at converting 'other' End of Life Plastic feedstocks. This strategic partnership will assist in ensuring that the Cynar Technology will remain the world leader in the Pyrolysis of End of Life Plastics to Liquid Fuel.