Communication Dans Un Congrès Année : 2023

Techno-economic and environmental survey of an industrial gasification and methanation plant for the production of synthetic methane from tyre crumb

Résumé

A new potential industrial pathway to valorise rubber from worn tyres into synthetic methane is assessed via a techno-economic and environmental analysis. In this process, tyre crumb is firstly gasified in an Entrained Flow Reactor (EFR), which produces syngas that is further adjusted to a H$_2$/CO ratio of 3, cleaned and finally reacted in a methanation reactor to produce synthetic methane. An industrial-scale gasifier (2.5 t/h) was modelled and all other elementary steps of the plant scaled accordingly. Two different pathways were considered: the first one, whereby the syngas adjustment is conducted by a Water Gas Shift (WGS) reactor, and a second one in which H$_2$ produced by an electrolyser is added to the gas stream. Both pathways were shown to have a similar global energy yield, whilst the electrified process demonstrated a significant improvement of carbon use (89 % vs. 35 %). The specific CO$_2$ content of the synthetic methane reached 400 kg/MWh$_{LHV}$ and 227 kg/MWh$_{LHV}$ for the pathway with WGS and the electrolyser, respectively. Finally the Levelised Cost Of methane (LCO$_{CH4}$) was estimated to be equal to 105 €/MWh synthetic fuel, waste valorisation, electrolysis, carbon assessment for the pathway with WGS and 18€/MWh$_{HHV}$ for the pathway with the electrolyser.
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Dates et versions

cea-04205363 , version 1 (12-09-2023)

Identifiants

  • HAL Id : cea-04205363 , version 1

Citer

Pierre-André Maitre, Julie Cren, Sylvie Valin, Etienne Goudal, Etienne Philippe, et al.. Techno-economic and environmental survey of an industrial gasification and methanation plant for the production of synthetic methane from tyre crumb. EUCBE - 31st European Biomass Conference and Exhibition, Jun 2023, Bologne, Italy. ⟨cea-04205363⟩
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