Vertical evaporator for the production of maple syruo

Abstract From the Canadian patent

An apparatus for concentrating sap from maple to produce maple syrup comprising a vertical housing a plurality of nozzles, in the housing for spraying the sap in droplets throughout the housing a stream of air flowing upwardly in the housing between the droplets adapted to pick up humidity from the droplets and accordingly concentrating the sap. The humidified air is exhausted through the top of the housing while the concentrated sap is picked up at the bottom of the housing. This apparatus is further used for recycling the sap until the latter is sufficiently concentrated. This apparatus is also used in combination with a conventional evaporator while the heat, usually lost by the …