PROCESS FOR PREPARING OF N-METHYL PYRROLIDONE

摘要

PURPOSE: A method for preparing N-methyl prolidone is provided to save energy and easily isolating N-methyl pyrolidone. CONSTITUTION: A method for preparing N-methyl prolidone comprises: a step of supplying monomethylamine(MMA) solution and gamma-butyrolactone(GBL) into a reactor; a step of separating N-methyl pyrolidone(NMP) and water; a step of mixing the water and monomethylamine to prepare monomethylamine solution; and a step of introducing the solution into a reactor. The monomethyl amine solution contains 25-65 weight% of monomethylamine and 35-75 weight% of water.