Oligomeriser with an improved feed system
AssigneeSabic Global Technologies B.V.
InventorsIgnacio Vic Fernandez, Fernan Mateos Salvador, Surya Prakasa Rao Daliparthi
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Abstract
In an embodiment, a reactor for carrying out a melt transesterification reaction at a reactor temperature of 160 to 300° C. and a reactor pressure of 5 to 200 mbar, comprises a cylindrical tank comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from the top; a stirring shaft disposed within the cylindrical tank along an axis thereof so that it is rotatable from outside of the cylindrical tank; a stirring blade extending from the stirring shaft in the cylindrical tank; a reactant solution inlet located on the bottom; and a reaction solution outlet located on the bottom. The reactor can be used for the polymerization of a polycarbonate oligomer.
Claims7
A reactor (10) for carrying out a melt transesterification reaction at a reactor temperature of 160 to 300° C. and a reactor pressure of 5 to 200 mbar, comprising:
- a cylindrical tank (12) comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from the top;
- a stirring shaft (14) disposed within the cylindrical tank (12) along an axis (100) thereof so that it is rotatable from outside of the cylindrical tank (12);
- a stirring blade (16) extending from the stirring shaft (14) in the cylindrical tank (12);
- a reactant solution inlet (40) located on the bottom;
- and
- a reaction solution outlet (20) located on the bottom,
- wherein the stirring blade comprises a flat plate impeller,
- wherein the stirring shaft (14) is disposed from the top of the cylindrical tank (12) along the axis (100) thereof,
- wherein the reactant solution inlet (40) is located on the bottom at a location outside of a rotation column of the stirring blade (16), and
- wherein the reaction solution outlet (20) is concentrically located on the axis (100) of the cylindrical tank (12).
A reactor (10) for carrying out a melt transesterification reaction at a reactor temperature of 160 to 300° C. and a reactor pressure of 5 to 200 mbar, comprising:
- a cylindrical tank (12) comprising a top, a side, and a bottom, wherein the bottom is convex, extending away from the top;
- a stirring shaft (14) disposed within the cylindrical tank (12) along an axis (100) thereof so that it is rotatable from outside of the cylindrical tank (12);
- a stirring blade (16) extending from the stirring shaft (14) in the cylindrical tank (12);
- a reactant solution inlet (40) located on the bottom at a location outside of a rotation column of the stirring blade (16);
- and
- a reaction solution outlet (20) located on the bottom;
- and
- a plurality of heating coils (64) located in the cylindrical tank (12),
- wherein the stirring blade comprises a flat plate impeller.
Dependencies are inferred from the claim text.