Patent ID: 9624112
Date: 2017-04-18
CPC Classifications: B01D,C02F,Y02A

Claim:
1. A filter press system for water desalination, said filter press system comprising: a frame; a plurality of filter plates configured to form a stack of parallel plates, each of said plurality of filter plates being movably attached to said frame, said plurality of filter plates further being configured to form a multiplicity of chambers, each of said multiplicity of chambers being formed by adjacent filter plates of said plurality of filter plates, each of said multiplicity of chambers being lined by filter cloths and substantially filled with beads, wherein said plurality of filter plates, said multiplicity of chambers and said filter cloths are configured to allow water vapor to escape from said chambers while retaining salts from said water to form a filter cake; a radio frequency heater, for heating said water in said multiplicity of chambers; a condenser for condensing said water vapor; and a separator for separating said beads from said filter cake after said filter cake is released from said chambers; wherein said radio frequency heater comprises parallel electrode plates electrically coupled to a radio frequency generator, said parallel electrode plates being configured (1) with the planes of said parallel electrode plates roughly orthogonally to the planes of each of said plurality of filter plates, (2) in close proximity to the outer surface of said plurality of filter plates, and (3) on either side of said plurality of filter plates.