Polycondensation apparatus
First Claim
Patent Images
1. An apparatus for preparing a condensation polymer, said apparatus comprising:
- mixing means for mixing reactants to form a feed mixture;
pressurizing means connected to said mixing means for pressurizing said feed mixture;
heating means for receiving said pressurized feed mixture from said pressurizing means and heating said mixture;
at least one reactor connected to said heating means, said reactor comprising means for heating said reactor to temperatures of about 400°
F. to about 1000°
F. and designed to maintain turbulent flow of a dispersion of particles of liquid or solid in a continuous vapor phase;
means for forming a dispersion of particles of liquid or solid in a continuous vapor phase from said heated feed mixture, said means located at an entrance to said reactor;
throttling means located at an exit from said reactor to control the pressure in said reactor; and
finishing means connected to the exit from the reactor to post-polymerize a reactor product.
3 Assignments
0 Petitions
Accused Products
Abstract
A process for preparing condensation polymers comprises forming a dispersion of a reaction mixture in a continuous vapor phase, maintaining the dispersion while passing it through a reaction zone, heating the dispersion in the reaction zone to polymerize reactants in the reaction mixture and form a polycondensate.
67 Citations
14 Claims
-
1. An apparatus for preparing a condensation polymer, said apparatus comprising:
-
mixing means for mixing reactants to form a feed mixture; pressurizing means connected to said mixing means for pressurizing said feed mixture; heating means for receiving said pressurized feed mixture from said pressurizing means and heating said mixture; at least one reactor connected to said heating means, said reactor comprising means for heating said reactor to temperatures of about 400°
F. to about 1000°
F. and designed to maintain turbulent flow of a dispersion of particles of liquid or solid in a continuous vapor phase;means for forming a dispersion of particles of liquid or solid in a continuous vapor phase from said heated feed mixture, said means located at an entrance to said reactor; throttling means located at an exit from said reactor to control the pressure in said reactor; and finishing means connected to the exit from the reactor to post-polymerize a reactor product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An apparatus for preparing a condensation polymer, said apparatus comprising:
-
a stirred vessel for mixing reactants to form a feed mixture; a pump connected to said vessel for pressurizing said feed mixture; a conduit connected to said pump for receiving said pressurized feed mixture, said conduit comprising means for increasing temperature of the pressurized feed mixture over at least a portion of the conduit; a plurality of heated, parallel tubular reactors connected to said conduit for heating a dispersion formed from said feed mixture, said heated tubular reactors designed to maintain turbulent flow of a dispersion of particles of liquid or solid in a continuous vapor phase therethrough and comprising means for heating the reactors to temperatures of about 400°
F. to about 1000°
F. to provide a heat flux to the dispersion;a plurality of orifices with one such orifice located at an entrance to each of said reactors for forming a dispersion of particles of liquid or solid in a continuous vapor phase from said heated feed mixture each such orifice being sized to allow a stream of said feed mixture to pass therethrough while maintaining pressure of the feed mixture in said conduit and allowing volatile components in the feed mixture to flash into a lower pressure region in the reactor; a valve located at an outlet of such tubular reactors to control the pressure in said reactors; and a post-polymerization finishing reactor connected to such tubular reactors for receiving a product from such tubular reactors and post-polymerizing said product. - View Dependent Claims (13, 14)
-
Specification