DEVICE FOR MELTING OF POLYMERIC COMPOUNDS Russian patent published in 2005 - IPC

FIELD: chemical industry; polymeric machine-building industry; processing of polymeric wastes.

SUBSTANCE: the invention is pertaining to the field of chemical industry and polymeric machine-building industry, in particular, to processing of polymeric wastes, first of all the wastes having a small bulk specific gravity, for example, film-type, filamentary and similar wastes for production of melts at enterprises producing synthetic fibers, plastic materials in chemical industry. The device ensures: retention of structure of a polymeric compound at heating without fracture at the melt temperature approaching the decomposition temperature, reduction of power inputs and an increase of efficiency. The device for melting of polymeric compounds contains a heated body for a heat carrier with inlet and outlet branch-pipes of a heat carrier circulating through the body, a feed bin with a feeding mechanism, a melt conduit with a transportation unit made in the form of a rotating feed screw and a unit of separation. In addition in the body of the device there is a bubble-type unit consisting of a mounted inside the body with a backlash in respect to it cylindrical casing with a bottom, which has holes linked with the heat carrier feeding branch-pipe and a gas-distributing grate. The grate is located above the holes used for the heat carrier feeding. The separation unit is made in the form of a diffuser with a cylindrical branch-pipe mounted inside the body with formation by a wall of the branch-pipe and the upper part of the cylindrical casing of a hydraulic lock. At that in the capacity of the heat carrier serves a heated noble gas. The device also contains an additional the heating element established inside the casing above the gas-distribution grate.

EFFECT: the invention ensures retention of structure of a polymeric compound at heating without fracture at the melt temperature approaching the decomposition temperature, reduction of power inputs and an increase of efficiency.

2 cl, 1 dwg