Back to results
US 7,585,104 B2Granted
Rotary processor
AssigneeUop LLC
InventorJames F. McGehee
Life of this patent
Estimating the term…
Abstract
The present invention provides an apparatus for increasing the intrinsic viscosity of a polymer. The apparatus includes a rotary kiln with internal walls for delaying progress of the polymer to the exit of the kiln to be subject to sufficient processing to obtain desirable intrinsic viscosity.
Claims20
An apparatus for increasing the intrinsic viscosity of a polymer comprising:
- a chamber adapted to be rotated about an axis and defining a first radial dimension, the chamber defining an internal volume and an internal surface, the chamber having a first end wall and a second end wall opposed to the first end wall, the first end wall having a first aperture defining a second radial dimension smaller than the first radial dimension, the second end wall having a second aperture, the first and second apertures providing access to the internal volume;
- a first wall having a first end abutting the first end wall, the first wall further defining the internal volume and extending inwardly from and obliquely to the first end wall, the first wall having a distal end spaced axially apart from the second end wall, the first wall defining a first product contacting surface positioned about a portion of the first aperture;
- and
- a second wall having a first end abutting the second end wall, the second wall further defining the internal volume and extending inwardly from and obliquely to the second end wall, the second wall having a distal end located axially between the second end wall and the distal end of the first wall, the second wall having a second product contacting surface positioned about a portion of the second aperture.
1 more element
An apparatus for increasing the intrinsic viscosity of a polymer comprising:
- a chamber defining a first radial dimension and an axis, the chamber defining an internal volume and an internal surface;
- at least three separating walls, each separating wall having an aperture providing access to a portion of the internal volume, the separating walls spaced along the axis and extending radially to the internal surface;
- and
- a segment being a portion of the internal volume located between axially adjacent first and second separating walls, the segment further comprising a first wall extending inwardly from and obliquely to the first separating wall and having a first product contacting surface, the first wall further defining the portion of the internal volume located between axially adjacent first and second separating walls;
- wherein the apparatus comprises at least a first segment and a second segment, the second segment rotated about the axis relative to the first segment by a first phase angle.
2 more elements
An apparatus for increasing the intrinsic viscosity of a polymer comprising:
- a chamber defining a first radial dimension and an axis, the chamber defining an internal volume and an internal surface;
- at least three separating walls, each separating wall having an aperture providing access to a portion of the internal volume, the separating walls spaced along the axis and extending radially to the internal surface;
- and
- a segment being a portion of the internal volume located between axially adjacent first and second separating walls, the segment further comprising:
- a first wall having a first end abutting the first separating wall and extending inwardly from and obliquely to the first separating wall, the first wall having a distal end spaced axially apart from the second separating wall, the first wall defining a first product contacting surface and further defining the portion of the internal volume located between axially adjacent first and second separating walls;
- a second wall having a first end abutting the second separating wall and extending inwardly from and obliquely to the second separating wall, the second wall having a distal end located between the second separating wall and the distal end of the first wall, the second wall defining a second product contacting surface and further defining the portion of the internal volume located between axially adjacent first and second separating walls;
- wherein the apparatus comprises at least a first segment and a second segment, the second segment rotated about the axis relative to the first segment by a first phase angle.
4 more elements
Dependencies are inferred from the claim text.