Catalytic Pyrolysis of Tire Wastes for Liquid Fuel

Authors

1 Department of Energy Science and Engineering, KUET, Khulna, Bangladesh

2 Department of Mechanical Engineering, KUET, Khulna, Bangladesh

Abstract

Severity of energy crisis is so acute in our society whereas environmental degradation is another challenging issue. Combining these two, environmental pollution can be eradicated permanently which is the burning issue for many countries of the world. Nowadays recycling of tire waste can be a dependable solution for minimizing energy crisis and environmental pollution as well as energy crisis. Similar to bio resources these wastes tire have the features of manufacturing energy by altered thermochemical conversion process. In the previous time waste tire pyrolysis was conducted without catalyst whereas the present pyrolysis with catalyst. The objectives were investigating the effect on oil extraction and the composition of derivative oil from tire waste in presence of catalyst. The effect of pyrolysis heating rate, temperature, operating time, catalyst/tire ratio (CT ratio) and sample size etc. on yield were also investigated.  The pyrolysis process was carried out in temperature range of 300 to 600ºC. The most favorable pyrolytic oil attained was 42.0% (wt) for without catalyst as well as 36.67% (wt) for catalytic pyrolysis at 450ºC. Characterization of physical properties of the resulting pyrolytic oil showed that increase in pyrolysis temperature and CT ratio resulted in higher yield of gas at the expense of oil. When CT ratio is increased from 0.13 to 0.30, the gas yield is increased from 13.33 to 15.33% (wt) and oil yield decreased from 36.67 to 28.0% (wt) at temperature of 450oC. High CT ratio favored an increase in the concentration of light naphtha in the pyrolytic oil. A yield of 97% (wt) is obtained from of the pyrolytic oil at 450oC with CT ratio 0.3 by fractional distillation below 350oC. It could be concluded that after proper treatment these oil can be used as substitute of alternative fuel or chemical feedstock to naphtha.

Keywords

References

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Iranian (Iranica) Journal of Energy & Environment
Volume 8, Issue 1
January 2017
Pages 88-94

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