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US 12,612,588 B2Granted
Method for cleaning a reactor for processing a lignocellulosic biomass
AssigneesIfp Energies Nouvelles, Institut National de Recherche Pour L'Agriculture, L'Alimentation et L'Environment, Argo Industries Recherche Et Developpement
InventorsMeriem Bouras, Caroline Aymard, Olivier Carnnot
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Abstract
The present invention relates to a processing method at acidic or neutral pH in a reactor (4) for processing lignocellulosic biomass (P), said process including a continuous cleaning phase of the reactor which comprises introducing a basic aqueous solution (EB) into said reactor containing the biomass being processed.
Claims12
A process for treatment of a lignocellulosic biomass (P), said process comprising:
- impregnating the lignocellulosic biomass (P) with an acidic aqueous solution (EA) in an impregnation reactor (3) to form an impregnated lignocellulosic biomass (P),
- pretreating the impregnated lignocellulosic biomass (P) in a pretreatment reactor (4), and
- providing a phase of continuous cleaning of the pretreatment reactor (4) while pretreating the impregnated lignocellulosic biomass (P) in a pretreatment reactor (4), wherein the phase of continuous cleaning comprises:
- introducing a basic aqueous solution (EB) into said pretreatment reactor (4) containing the impregnated lignocellulosic biomass (P), and
- adjusting a concentration of the basic aqueous solution (EB) to increase a pH of the impregnated lignocellulosic biomass (P) in the pretreatment reactor (4) from an acidic pH range of between 0.5 and 3, to a basic pH range of between 8 and 14,
- wherein the pH of the basic aqueous solution (EB) before introduction into the pretreatment reactor (4) is greater than or equal to 9.
3 more elements
Dependencies are inferred from the claim text.