Open AccessExperimental study of the co‐gasification of wood and polyethylene in a two‐stage gasifier
Author(s) -
Harouna Ibrahim G.,
Berger Benjamin,
Hervé Jeanmart,
Sanogo Oumar,
Daho Tizane,
Ouiminga Salifou K.,
Koulidiati Jean
Publication year - 2020
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.667
Subject(s) - wood gas generator , pyrolysis , char , carbon fibers , materials science , fraction (chemistry) , charcoal , mass fraction , chemical engineering , chemistry , pulp and paper industry , waste management , composite material , coal , organic chemistry , metallurgy , composite number , engineering
Co‐gasification of wood mixed with 20% (mass fraction) of polyethylene (PE) in a two‐stage NOTAR ® fixed‐bed gasifier was studied in the present paper. The ratio of air flow injected in the pyrolyzer and air flow injected in the oxidation zone is called the air ratio (AR). The AR of 0.35, 0.43, and 0.49 were used for test runs. Mass and energy balances were established. The study showed the feasibility of co‐gasification of wood mixed with 20% of PE in the two‐stage gasifier. However, considerable quantity of residues rich in fixed carbon content (17% of the fuel mass and 69% of fixed carbon content) was produced due to a low reactivity of the charcoal obtained after the pyrolysis. AR increasing reduces the gas CO content due to overconsumption of char at the pyrolysis stage. H 2 and CH 4 highest values are obtained for the intermediate AR = 0.43 which maximized the LHV, energy efficiency, and carbon conversion with respectively 4674 kJ/Nm 3 , 64.35%, and 74.52%. Low reactivity and carbon content of the pyrolysis char likely lead to lower performance of co‐gasification of PE mixed with wood compared to wood gasification.