The impact of nano-additives on the properties of sludge microwave pyrolysis products

ABSTRACT

The annual output of refinery waste sludge is huge in our country, and the resource disposal of sludge has become a difficult problem that needs to be overcome. In order to increase the content of renewable gas and light oil after pyrolysis of oil sludge at the bottom of refinery tank, nano-CuO and nano-γ-Al₂O₃ with good wave-absorbing property and good catalytic property were selected to study the effect of additive load on the characteristics of pyrolysis reaction products by experimental research and analysis. The results show that the highest oil and gas yields can be obtained when the nano-CuO content is 10%. When nano-γ-Al₂O₃ was loaded at 15%, the pyrolysis oil and pyrolysis gas yield reached the peak. Moreover, the light component of pyrolysis oil can be improved, and the proportion of gasoline and diesel (C₄ ~ C₁₂, C₁₃ ~ C₁₈) is 75.422%. H₂ volume content reaches the highest at 15% load.

Keywords
oily sludge; microwave pyrolysis; microwave absorbent