C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
C10J 3/58 (2006.01) C10J 3/20 (2006.01)
Patent
CA 2672812
The present invention relates to a process for producing synthesis gas (S) from biomass, said process comprising the steps of drying the biomass and gasifying the biomass. The invention also relates to an equipment to carry out the process according to the present invention. It is significant of the present invention that the process comprises the further steps: subjecting the outgoing gases (CO2, N2 and H2O) from the gasifying step to a first heat exchange, where the outgoing gases (CO2, N2 and H2O) are cooled, purifying the outgoing gases (CO2, N2 and H2O) to achieve a process gas (P), said purification being effected by eliminating nitrogen (N2) from the outgoing gases (CO2, N2 and H2O), subjecting the process gas (P) to heat exchange, where the process gas (P) is heated, reducing the process gas (P) to synthesis gas (S), subjecting the synthesis gas (S) to heat exchange, where the synthesis gas (S) is cooled and supply air to the gasification is heated.
La présente invention concerne un procédé pour produire un gaz de synthèse (S) à partir de biomasse, ledit procédé comprenant des étapes consistant à sécher la biomasse et à la gazéifier. L'invention concerne également un matériel pour réaliser le procédé selon la présente invention. Il est significatif de la présente invention que le procédé comprend les étapes additionnelles consistant à : soumettre les gaz sortants (CO2, N2 et H2O) provenant de l'étape de gazéification à un premier échange thermique, où les gaz sortants (CO2, N2 et H2O) sont refroidis, purifier les gaz sortants (CO2, N2 et H2O) pour obtenir un gaz de procédé (P), ladite purification étant effectuée par élimination d'azote (N2) des gaz sortants (CO2, N2 et H2O), soumettre le gaz de procédé (P) à un échange thermique, où le gaz de procédé (P) est chauffé, réduire le gaz de procédé (P) à un gaz de synthèse (S), soumettre le gaz de synthèse (S) à un échange thermique, où le gaz de synthèse (S) est refroidi et l'air d'alimentation à la gazéification est chauffé.
Cortus Ab
Mcfadden Fincham
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