Peer-Reviewed Journal Details
Mandatory Fields
Riedewald, Frank; Patel, Yunus; Wilson, Edward; Santos, Silvia; Sousa-Gallagher, Maria J.
2020
November
Waste Management
Economic assessment of a 40,000 t/y mixed plastic waste pyrolysis plant using direct heat treatment with molten metal: A case study of a plant located in Belgium
Validated
WOS: 5 ()
Optional Fields
Mixed waste plastic Recycling Pyrolysis Economic assessment Accuracy of cost estimates CAPEXOPEX
120
698
707
Pyrolysis has been identified as an ideal process to recycle mixed plastic waste (MPW). This study investigates the economics of a 40,000 t/y MPW pyrolysis process, called PlastPyro, located in Belgium, to an accuracy of +/- 15% i.e. "Definite Estimate". The process uses molten metal in a direct heat treatment process to pyrolyse the waste. An internal rate of return (IRR) of 20% strongly indicates that a 40,000 t/y PlastPyro plant is financially attractive for private investors. The capital expenditure (CAPEX) is estimated to be (sic)20.1 m or (sic)26.1 m if the cost of capital is included. The operating expenditures (OPEX) of the plant are estimated (sic)3.4 m per year. The sensitivity analysis shows six main variables having major impacts on the financial returns of a PlastPyro plant: (1) the addressable volume and quality of plastic waste, (2) the feedstock costs, (3) the capital and operating expenditures, (4) the revenues from the sale of the produced pyrolysis oil (P-oil), (5) the tipping fees and (6) the potential to co-locate a PlastPyro plant with a waste plastic sorting facility. For example, the 15-year low P-oil revenue price of (sic)210/t results in an IRR of 20%; but on the 6th of March 2020 the P-oil price may have achieved (sic)227/t, resulting in an IRR of 37%. The paper also shows that a reliable supply of MPW is available, and that reliable, accessible markets for the P-oil are available. Finally, cost estimates should state their accuracy and usually factorial cost estimates are not accurate enough to state the IRR. (C) 2020 Elsevier Ltd. All rights reserved.
OXFORD
0956-053X
10.1016/j.wasman.2020.10.039
Grant Details