Abstract: An apparatus for enhancing phase contact and chemical reactions is provided. The apparatus comprises at least one high-turbulence mixing stage and at least one high-shear-stress and high-cavitation stage. The stages are adapted to cause an increase in relative sliding speeds of phases involved in a multiphase flow passing through the stages. The high-shear-stress and high-cavitation stage comprises a rotor having radial teeth housed in a cavitation chamber surrounded by a stator having radial teeth. The facing surfaces of the radial teeth have a parabolic profile in circumferential direction. For each tooth, the parabolic profile lies along a curve of a parabola of which a vertex is arranged at a rear edge of the tooth, with respect to a direction of rotation of the rotor, and along a radius extending from the rear edge to a center of the rotor. The focus of the parabola is also located on the radius.

Abstract: An apparatus for enhancing phase contact and chemical reactions is provided. The apparatus comprises at least one first high-turbulence mixing stage and at least one second high-shear-stress and high-cavitation stage. The stages are adapted to cause an increase in the relative sliding speeds of the phases involved in a multiphase flow passing through the stages.

Abstract: Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behavior of the rotating inclined reactor.

Abstract: Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behaviour of the rotating inclined reactor.

Abstract: Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behaviour of the rotating inclined reactor.

Abstract: Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behavior of the rotating inclined reactor.

Abstract: A process for the solid phase continuous polymerization of polyester in order to achieve a molecular weight increase, measurable by the intrinsic viscosity IV increase of the polyester, wherein the use of at least a reactor (15) is provided, the reactor (15) being cylindrical, rotary around its own central axis (S), substantially horizontal, slightly inclined so as to produce the polymerization of the polyester granules passing through the reactor by gravity thanks to the inclination and the rotation of the reactor (15), inside the reactor there being produced a purge gas flow having the same or the opposite direction with respect to the flow of the polyester granules.

Abstract: Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behaviour of the rotating inclined reactor.

Abstract: Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behaviour of the rotating inclined reactor.

Abstract: A reactor and a process for solid phase continuous polymerization of polyethylene terephthalate (PET) in order to achieve an increase of the intrinsic viscosity (I.V.) of a low molecular weight PET pre-polymers flow. A plurality of fluidized stages in series (109; 309) are provided and said PET pre-polymers flow is fed into said fluidized stages in series (109; 309). An inert gas flow is fed either in cross-flow or in counter-current flow with respect to the PET pre-polymers flow.

Abstract: A reactive atmosphere or gaseous composition (A) applicable in processes for the continuous and/or discontinuous solid phase polymerisation of polyester in order to achieve molecular weight increase and, particularly, to be sent into contact with the polyester granules during the reaction step in aforesaid polymerisation processes, said reactive atmosphere (A) comprising at least a reactive substance, or a mixture of reactive substances, (R) preferably diluted under gas and/or aerosol phase into e carrying fluid (V) and a purging inert gas, or a mixture of inert gases, (G) purified and heated, said reactive substance, or mixture of reactive substances, (R) being selected from the category of the molecules that have reactive end-groups with respect to the groups forming the polyesters macromolecules and said purging inert gas (G) being preferably saturated of reactive substance and/or of carrying fluid become reactive.

Abstract: A reactor and a process for solid phase continues polymerisation of polyethylene terephthalate (PET) in order to achieve an increase of the intrinsic viscosity (I.V.) of a low molecular weight PET pre-polymers flow. A plurality of fluidised stages in series (109; 309) are provided and said PET pre-polymers flow is fed into said fluidised stages in series (109; 309). An inert gas flow is fed either in cross-flow or in counter-current flow with respect to the PET pre-polymers flow.