Patent ID: 8821731
Filing Date: 2014-09-02
Classification: B01D,C07C,C10L,C12M,Y02P

Abstract:
1. A method of regenerating solvents used to remove gaseous contaminants from gaseous mixtures with significantly reduced energy required, the method comprising: directing a solution comprising the solvents and the preferentially absorbed and/or dissolved gaseous contaminants through a nano-filtration system comprising a membrane having pre-determined diffusion rates and having a pore size sufficient to permit at least some of the solvent to pass through the membrane so that the gaseous contaminant that passes through the membrane remains substantially absorbed and/or dissolved in solution and so that a substantial portion of the gaseous contaminants pass through the filter, permitting the passage of substantially all of the gaseous contaminants through the membrane for further processing recirculating the separated solvent so that it may be used again to remove new gaseous contaminants, and electrolyzing a sulfide solution to convert the sulfides into elemental sulfur or alkali metal polysulfides in an electrochemical cell.