Reactor control

摘要

A liquid phase reactor comprising a screw within a barrel, the screw and barrel being relatively rotatable and defining a mixing zone therebetween, the barrel having at least two inlets for introduction of components for mixing into the barrel and an outlet for discharge of a product of mixing from the barrel, the screw comprising a spiral groove whereby relative rotation of the screw and barrel is adapted to axially transport the components between the screw and barrel while mixing the components and to extrude the product through the outlet, wherein the reactor is adapted to achieve a substantially constant flow ratio of components into the barrel during operation of the reactor.

主权项

1. A liquid phase reactor comprising a single screw within a barrel, the screw and barrel being relatively rotatable and defining a mixing zone therebetween, the barrel having at least two inlets for introduction of components for mixing into the barrel and an outlet for discharge of a product of mixing from the barrel, the screw comprising a spiral groove whereby relative rotation of the screw and barrel is adapted to axially transport the components between the screw and barrel while mixing the components and to extrude the product through the outlet, wherein the reactor has means for achieving a substantially constant flow ratio of the components into the barrel during operation of the reactor, wherein said means comprises appropriate screw design and positioning of at least one inlet of the at least two inlets relative to the screw to minimize or avoid back-pressure at the at least one inlet of the at least two inlets; wherein the environment presented to the at least one inlet is essentially constant as the screw and barrel rotate relative to each other, so that the back-pressure exerted is essentially constant under steady state operating conditions; wherein the at least one inlet is positioned adjacent a circumferential groove and a feed component is fed into this groove through the at least one inlet; and wherein the spiral groove receives the feed component from the circumferential groove by a feeder groove extending between the two.