| abstract |
In a biomass extraction circuit there is a need for an improved evaporator. An evaporator (12) includes an inlet for a liquid solvent/biomass mixture, the inlet including a spray nozzle (27). The evaporator (12) includes a heated vessel wall (20a, 20b). When the solvent/biomass mixture flows through the nozzle (27), the pressure drop vaporises some of the solvent. The heated walls (20a, 20b) vaporise the remainder of the solvent. The solvent vapour vents from the evaporator (12) for recycling. Liquid biomass extract collects in the base of the vessel for draining and subsequent use. |