How to convert plastic to Diesel or Gasoline ?
Using Pyrolysis we can convert plastic into fuel. Pyrolysis is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen. Plastic takes 100 years to degrade, which means that every single piece we have not recycled still exists. Many of the plastic items we throw away can be recycled into new products -- but some types, known as 'end-of-life' plastics, currently have no second life and end up in landfill, where they can release hazardous chemicals into the environment. How to deal with these plastics is one of the most pressing questions for businesses and local authorities. Technology company Cynar is giving these waste plastics one more life by turning them into synthetic fuel at their plant in Portlaoise, Ireland. Using a process called pyrolysis, plastics are heated in an oxygen-free environment to prevent them from burning, and then broken into their component hydrocarbons to create the equivalent of a petroleum distillate. This can then be separated into different fuels. The end products are cleaner, lower in sulphur and in the case of the diesel, higher quality than regular diesel fuel. Cynar is currently able to produce 19,000 litres of fuel from 20 tonnes of waste plastic. The company plans to set up more plants across the UK, and with 15 million tonnes of plastics still going into landfill in Europe every year, they have plenty of raw materials at their disposal. Oliver Steeds of the earthrise team visits the Cynar plant in Ireland, to find out how the process works. The technique Heat plastic waste in non oxygen environment, it will melt, but will not burn. After it has melted, it will start to boil and evaporate, you just need to put those vapors through a cooling pipe and when cooled the vapors will condense to a liquid and some of the vapors with shorter hydrocarbon lengths will remain as a gas. The exit of the cooling pipe is then going through a bubbler containing water to capture the last liquid forms of fuel and leave only gas that is then burned. If the cooling of the cooling tube is sufficient, there will be no fuel in the bubbler, but if not, the water will capture all the remaining fuel that will float above the water and can be poured off the water. On the bottom of the cooling tube is a steel reservoir that collects all the liquid and it has a release valve on the bottom so that the liquid fuel can be poured out.
Watch BBC Report - How to get diesel from waste plastic - Bang Goes the Theory - Series 7 - BBC
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Tags: plastic waste, plastic to diesel, convert plastic to fuel, plastic to gasoline, plastic to petrol