Stripping to remove unreacted monomers and contaminants from polymer dispersions using steam - uses perforated screens to improve mixing of steam and dispersion, to yield good and uniform dispersion

摘要

Uniformly mixing a dispersion using steam involves passing the dispersion along a tubular mixing vessel through which steam is flowing - comprises passing the dispersion and steam through at least one screen contg. one or more holes. The appts. for this method is also claimed, comprising a tubular mixing vessel (2) with an inlet (1), outlet (8), injector (3) with its exit near the inlet and at least one screen (5 - 7) with one or more holes (5A - 7A) between the injector and outlet.