초록 ▼

A process for forming a purified solute from an aqueous solution is provided whereby a mixture of an extractant, a hydrate former and the aqueous solution is first formed. The hydrate former forms a hydrate with water while the solute does not form a hydrate. The extractant takes up the solute from

A process for forming a purified solute from an aqueous solution is provided whereby a mixture of an extractant, a hydrate former and the aqueous solution is first formed. The hydrate former forms a hydrate with water while the solute does not form a hydrate. The extractant takes up the solute from the aqueous solution. The mixture is subjected to a temperature and pressure sufficient to form the solid hydrate of the hydrate former, an aqueous solution of the solute and a portion comprising the extractant containing the solute. The solute is recovered from the portion comprising the extractant and the solute.

대표청구항 ▼

A process for forming a purified solute from an aqueous mixture containing water and a solute comprising forming a mixture of an extractant, a hydrate former and said aqueous mixture, said hydrate former being capable of forming a hydrate with water at temperatures and pressures at which said solute

A process for forming a purified solute from an aqueous mixture containing water and a solute comprising forming a mixture of an extractant, a hydrate former and said aqueous mixture, said hydrate former being capable of forming a hydrate with water at temperatures and pressures at which said solute does not form a hydrate, said hydrate former being present in an amount sufficient to permit hydrate formation with water in said aqueous mixture, said extractant being a solvent or adsorbant capable of taking up significant amounts of the solute from water, subjecting said mixture to conditions of temperature and pressure to form a hydrate of said hydrate former with water thereby forming a second mixture comprising a solid portion consisting of water hydrate of said hydrate former, a liquid portion comprising a water solution of said solute, a portion comprising hydrate former and a portion comprising extractant containing concentrated amounts of solute, removing at least some of said extractant portion from said solid portion and said liquid portion and separating said solute from said extractant to form a purified solute.