Process For Recovering And Recycling A Catalyst

摘要

A process of recovering and recycling a catalyst includes feeding an epoxidized fatty acid ester, a solvent, and a catalyst to a reactor. The solvent is reacted with the epoxidized fatty acid ester to open epoxy rings of the ester and produce a polyol. Some unreacted solvent remains after the reaction. The unreacted solvent is separated from a mixture of the polyol and the catalyst. The polyol/catalyst mixture is passed to an adsorption bed so that the catalyst is adsorbed and the polyol passes through the bed. The polyol is recovered. The adsorption bed is rinsed with the unreacted solvent to desorb the catalyst and obtain a mixture of the solvent and the catalyst. The mixture of solvent and catalyst is recycled to the reactor for further reaction.

主权项

1. A process of recovering and recycling a catalyst comprising:
feeding an epoxidized fatty acid ester, a solvent, and a catalyst to a reactor; reacting the solvent with the epoxidized fatty acid ester to open epoxy rings of the ester and produce a polyol, and some unreacted solvent remaining after the reaction; separating the unreacted solvent from a mixture of the polyol and the catalyst; passing the polyol/catalyst mixture to an adsorption bed so that the catalyst is adsorbed and the polyol passes through the bed; recovering the polyol; rinsing the adsorption bed with the unreacted solvent to desorb the catalyst and obtain a mixture of the solvent and the catalyst; and recycling the mixture of solvent and catalyst to the reactor for further reaction.