Volume No. 12 Issue No.: 2 Page No.: 157-166 Oct.-Dec. 2017




Chauhan Y. P.*, Jadhav O. R., Chougule U. B., Patil S. D. and Kadam O. J.

Department of Plastic Engineering, Government Polytechnic, Miraj Dist. Sangli, Maharashtra State (INDIA)


Received on : August 22, 2017




Due to the use and throw nature of human beings, plastic waste creates huge problem as well as the challenge for its proper disposal in front of the society. As plastic is not biodegradable, it should be recycled or its thermal degradation should be done to useful products. Thermocatalytic cracking is one of the processes for conversion of waste plastics into liquid fuel as it contains long chain hydrocarbons; which can be broken into small chain hydrocarbons as present in the liquid fuel like diesel. This work is the little attempt towards the recycling of waste plastics conducted at Department of Plastic Engineering, Government Polytechnic, Miraj. The term ‘Polyfuel’ here is for the fuel made up of waste plastics. In this study, we have performed the experiment for conversion of waste plastics like PP, PE (LDPE and HDPE), PS etc. to liquid fuel. This is done by catalytic cracking of these waste plastics by means of thermal energy in the temperature range of 300-3500C. Coal fly ash is used as a catalyst for this process. The conversion of process was observed to be 47.22 % during experimentation. We modified readymade mild still pressure cooker of 9 litre capacity as a reactor for this experiment. The glass condenser is used for condensing the generated vapours during process. We found 510 ml of fuel from 1080 grams of waste plastics at reaction temperature of 300-3500C. This collected fuel was treated as the crude fuel before its distillation. Distillation of this crude fuel is done to get the pure fuel which is termed as “Polyfuel”. We got 400 ml of Polyfuel from 500 ml crude fuel after distillation. The Polyfuel analysis shows that the specific gravity at 280C is 0.73, density at 280C is 0.72 g/cm3, volatile matter is 99.73 %, flash point is 6 0C, pour point is <-5 0C, acid value is 6.90, total ash is 0.00 %, moisture content is 0.10 %, carbon residue is <0.10 %, sulphur content is 165 ppm and gross calorific value is 9980 kcal/kg which is comparable with the regular diesel fuel.


Keywords : Polyfuel, Waste plastics, Coal fly ash, Catalytic cracking, Distillation