Patent ID: 7780927
Filing Date: 2010-08-24
Classification: B01F,B01J

Abstract:
1. A spinning tube in tube reactor comprising: a stator including first cylindrical tube constituting a stator tube having upper and lower ends and an interior cylindrical operative surface; a rotor including a second cylindrical tube of smaller diameter constituting a rotor tube having corresponding upper and lower ends and an exterior cylindrical operative surface and disposed within the stator tube for rotation about a common coextensive vertical longitudinal axis; the interior surface of the stator tube being spaced a required distance from the exterior surface of the rotor tube and cooperating to provide between them a reaction passage of annular transverse cross section through which reactants are passed to react together therein while subjected to shear as a result of their passage through the reaction passage and the relative rotation of the two surfaces; first entry means for feeding a first reactant into the reaction passage at a first entry point at the lower end thereof to pass vertically upward in the reaction passage in the form of an annular stream; second entry means for feeding a second reactant into the reaction passage at a second entry point vertically above the first entry point to mix with the first reactant and to react therewith; at least one of the first and second reactants being a liquid; exit means at the upper end of the reaction passage through which reacted reactants pass from the reaction passage; wherein motor means are disposed above the rotor and are connected by a flexible connection to the upper end of the rotor to rotate it about the vertical longitudinal axis; the flexible connection suspending the rotor within the stator, constituting sole means by which the rotor is mounted within the stator, and providing axial and angular freedom for the rotor in its rotation; whereby uniformity of the radial spacing between the stator inner operative surface and the cooperating rotor outer operative surface around their respective circumferences is maintained by the hydrodynamic effect in the reactant liquid or liquid mixture passing upward in the reaction passage, the effect resulting from its passage and the relative rotation of the two surfaces.