STEPS AND ECONOMIC IMPORTANCE OF PYROLYSIS

The essential step in the pyrolysis of plastics involves:

1. Purging oxygen from pyrolysis chamber.

2. Evenly heating the plastic to a narrow temperature range without excessive temperature variations.

3. Pyrolising the plastics.

4. Catalytic conversion of the gases to specific carbon chain lengths.

5. Managing the carbonaceous char by-product before it acts as a thermal insulator and lowers the heat transfer to the plastic.

6. Careful condensation and fractionation of the pyrolysis vapours to produce fuels of excellent quality and consistency.

7. Removal of sulphurs and residual contaminants.

ECONOMIC IMPORTANCE OF PYROLYSIS

 The pyrolysis of waste plastics to fuel has several benefits:

The technology helps to save land resources by utilizing waste plastics to generate valuable energy. Currently, a majority of the waste plastic is land filled and it is not sustainable because waste plastic takes very long time to decay.

It steps up a new cycle of consumption to non-renewable energy sources.

It also provides a considerable source of petrochemicals that reduces the expenditure of non-renewable energy resources.

 It establishes an effective, innovative, and alternative solution for eliminating waste plastics, consequently, preventing them from polluting the environment either through incineration or filling up landfills and waterways.

The fuels produced from this process do not contain sulphur content because there is no sulphur in the waste plastic feedstock. This is an advantage compared with the classic fossil fuels such as diesel because sulphur content in the fuels could form SO₂ after combustion. SO₂ is a pollutant causing severe air pollutions, which affects human health and damages the concrete structure.

Therefore, this technology (Pyrolysis) is environmental friendly and has significant positive impact on the community.