Patent ID: 9622505
Date: 2017-04-18
CPC Classifications: A23L,B01D,C13B

Claim:
1. A system to produce maple syrup, the system comprising: a fresh maple sap source providing maple sap at a sugar content between 1 and 3° Brix, at least one membrane filtration stage connected to directly receive the maple sap from the fresh maple sap source and operable to concentrate the maple sap to a sugar content of between 30 and 50° Brix and to increase a differential membrane pressure in accordance with an increase of an osmotic pressure as the sugar content increases to eventually reach the sugar content of between 30 and 50° Brix; and a flat pan evaporator stage connected to the at least one membrane filtration stage to directly receive the concentrated maple sap at the sugar content of between 30 and 50° Brix.