Patent DE-102005003731-A1 (DE)
Title: Device, for continuous degassing of highly viscous liquid, comprises reaction zones that are formed separately/partially coupled to rotors and the rotor in first and second zones has a product inlet and in the last zone has spatial lattice
Inventor: STRENG MICHAEL
IPC: B01F35/60
Filed: 2005-01-26
Abstract: Device, for continuous degassing of highly viscous liquid or pasty products, comprises two reaction zones that are formed separately or partially coupled to rotors, the rotor in reaction zone I and/or additionally in reaction zone II exhibits a product inlet device, the rotor in the last reaction zone exhibits a construction in form of a spatial lattice and the rotors with longitudinal bars at their periphery and are provided with anchorages. Device, for continuous degassing of highly viscous liquid or pasty products e.g. for the polycondensation of polyester from bi- or more-functional alcohols and carboxylic acids and their sub types with or without comonomer portions such as: polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexane dimethylene terephthalate (PCT), polypropylene terephthalate (PPT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polycyclohexane trimethylene naphthalate (PCN) or polypropylene naphthalate (PPN), where the rotor or rotor of systems are driven, which are installed outside the reactor and that or the rotors are divided into several portions, comprises using the reactor for preparing a product with intrinsic viscosities of 0.9 dl/g, has two reaction zones that are formed separately or partially coupled to rotors, which are driven separately from accompanying hydraulic systems and the rotor accompanying waves are leas as primary wave by the reactor and is connected with the rotor and one or more of the primary waves are stored as hollow shafts, where they penetrate the front of the reactor and are connected respectively to the drives, or the primary wave as a two divided waves that are carried at their respective end positions in the reactor by the interiorly positioned waves, separately driven and stored or in addition at least a hollow shaft of the primary wave is separately driven, the intrinsic viscosity is measured from measuring point as a function of the product temperature in relation to the hydraulic guiding system or average value(s) of the hydraulic systems determined torque, where the controlled variables resulting from it regulates the vacuum in the system to the target viscosity of the product with clearly less dead times adjusted in the regulation and constantly held as that with the conventional systems, the reaction zones of the reactor in the sphere of influence of that of the rotors are equipped with separate and individually adjustable heater, the product has inlet over one or more mirror arrangement in the form of slit nozzles (16) on the rotors, where the product is quickly generated on the disks by necessary reaction surface, the rotor in reaction zone I and/or additionally in reaction zone II exhibits a product inlet device in the form of dead-space-free shovels, with which an additional pro-active distribution of the product can be obtained from the product residue, the reactor is regulated over one or more product discharge corresponding to the product properties, which are to be reached, the rotor in the last reaction zone exhibits a construction in form of a spatial lattice, which is a transverse mixture necessary for adjusting the product properties and are optimally generated from reaction surface and the rotors with longitudinal bars at their periphery and are provided with anchorages, which causes a reinforcement of the rotors against deflection.