Direct liquefaction of plastics and coliquefaction of coal-plastic mixtures
- Univ. of Kentucky, Lexington, KY (United States); and others
In previous work, we have investigated the direct liquefaction of medium and high density polyethylene (PE), polypropylene (PPE), poly(ethylene terephthalate)(PET), and a mixed plastic waste, and the coliquefaction of these plastics with coals of three different ranks. The results established that a solid acid catalyst(HZSM-5 zeolite) was highly active for the liquefaction of the plastics alone, typically giving oil yields of 80-95% and total conversions of 90-100% at temperatures of 430-450{degrees}C. In the coliquefaction experiments, 50:50 mixtures of plastic and coal were used with a tetralin solvent(tetralin:solid = 3:2). Using {approximately}1% of the HZSM-5 catalyst and a nanoscale iron catalyst, oil yields of 50-70% and total conversions of 80-90% were typical. Our earlier work on the coliquefaction of paper(newsprint) with coal also established that high total conversions were obtained; however, the gas yields were high, while the oil yields were moderate. In the current work, we have conducted further investigations of the liquefaction reactions of PE and the coliquefaction reactions of PE, PPE and Black Thunder subbituminous coal. We have also investigated the coliquefaction reactions of PE, PPE, and newsprint. Several different catalysts have been used in these studies. Initial work has been completed on the direct liquefaction of a commingled waste plastic obtained from the American Plastics Council.
- OSTI ID:
- 433245
- Report Number(s):
- CONF-950402--
- Journal Information:
- Preprints of Papers, American Chemical Society, Division of Fuel Chemistry, Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry Journal Issue: 1 Vol. 40; ISSN ACFPAI; ISSN 0569-3772
- Country of Publication:
- United States
- Language:
- English
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