IN257678: An improved process for the recovery of extraction solvent form brine solution

The invention relates to an improved process for the recovery of extraction solvent from brine solution. This invention particularly relates to the recovery of N-methylpyrolidone (NMP) and sulpholane from brine solution. The process provides for the recovery of extraction solvents like Sulpholane, N-methylpyrolidone (NMP) from brine solutions i.e solutions containing; 50 percent water and salt content as high as 30,000 ppm wt. In addition, the invention provides a process for the recovery of extraction solvent by liquid-liquid extraction technique using light polar hydrocarbons like alcohol, ethyl glycol ethers etc., particularly low boiling aromatics hydrocarbons.