A loop-type flash drying apparatus configured to dry an object to be treated with a gas by supplying the object into a gas stream circulating in a loop-type drying pipe, wherein the loop-type flash drying apparatus includes: (i) a loop-type drying pipe; (ii) a feeding port configured to feed an object to be treated into the drying pipe; (iii) a second blowing port configured to blow a gas into the drying pipe; (iv) a discharge port configured to discharge the object from the drying pipe; (v) a discharge region formed by the drying pipe and the discharge port; and (vi) a first blowing port through which a gas for accelerating a gas flowing in the discharge region is linearly blown toward the discharge region.

An analysis method and apparatus are disclosed for analysing an absorption filtering medium that filters volatile organic substances in a process gas in a plant for dehumidifying polymer granules, with a fan that generates a flow of gas through the S filtering medium, an analyzer of the total concentration of the organic carbon, a sensor to detect the pressure downstream of the filtering medium, in which the saturation state and/or the absorbent capacity and/or the deterioration over time of the filtering medium is determined by a comparison of the measured concentrations of total organic carbon in the flow of gas upstream and downstream of the filtering medium.

A process for drying granular polymeric material, comprising the steps of: dehumidifying the granular polymeric material by means of a first flow of gas at a first temperature of between 100° C. and 150° C.; heating the dehumidified granular polymeric material to a second temperature, greater than the first temperature; drying the granular polymeric material heated to the second temperature, by applying a predefined vacuum level; and transferring the dried granular polymeric material to a feed hopper (40) provided upstream of a working machine (100).

Method for the preparation of dried polymer pellets in a facility having a dryer with a first chamber and a mechanical agitator, and the facility further having a degassing silo with a second chamber, the method includes the steps of guiding a drying gas flow made from or containing a first gas mixture for drying wet polymer pellets into the first chamber, transferring the dried polymer pellets into the second chamber, guiding a second gas mixture for degassing the dried polymer pellets into the second chamber thereby transforming the second gas mixture into a third gas mixture and guiding a portion of the third gas mixture into the first chamber; and process for manufacturing LDPE pellets.

A supply module (2) for supplying additive manufacturing powder comprises: a main hopper (29) for storing additive manufacturing powder, the main hopper (29) being designed to be connected to a manufacturing module (4) configured to additively manufacture an object from the powder; an inlet (211) of the supply module (2) designed to be connected to the manufacturing module (4) and to receive powder located in the manufacturing module (4); a glovebox (25) being able to be closed in a sealed manner; a provisioning circuit configured to transfer powder located in the glovebox (25) to the main hopper (29); and a circulation system designed to set powder in motion according to a circulation loop closed on itself, the circulation system comprising a suction system (21) designed to evacuate gas present in the circulation loop, the circulation loop passing through the main hopper (29) and the suction system (21).

An injection molding system includes: an injection molding machine where a shaping mold is installed; a material supply device supplying a material to the injection molding machine; a temperature controller controlling a temperature of the shaping mold; a dryer drying a material stored in the material supply device; a controller controlling the injection molding machine; and a casing. The injection molding machine, the material supply device, the temperature controller, the dryer, and the controller are provided inside the casing. The casing has a caster and is configured to be movable.

A rotary dryer can include a screen that is divided into different portions joined together to form the screen structure. The screen portions can be joined together using one or more quick release latches. Each latch can provide a locking connection between the different screen portions. The latch can be unlocked, e.g., using hand pressure, to disconnect one screen portion from an adjacent screen portion. This can allow quick replacement of one or both screen portions with replacement screen portion(s). The latch may include a latch body and a latch rod. The latch rod may be rotatably connected to the latch body. The latch rod can be connected to one screen portion and the latch body connected to another screen portion. The latch body can rotate around the rotatable connection, causing the screen portions to be pulled together for subsequent use of the screen structure.

A process for drying granular polymeric material, includes: dehumidifying the granular polymeric material by a first flow of gas at a first temperature of between 100° C. and 150° C.; heating the dehumidified granular polymeric material to a second temperature, greater than the first temperature; drying the granular polymeric material heated to the second temperature, by applying a predefined vacuum level.
The pressure-sealing elements include a filling unit, which includes a small tank blocked upstream and downstream by shut-off valves, as well as a discharge unit, which includes a small tank blocked upstream and downstream by respective shut-off valves.

An analysis method and apparatus for treating polymer granules at least part of which comes from post-consumer recycling, in which a flow of a process gas is purified from contaminating vapours by traversing, in sequence, first a dust collector filter that retains the solid particles contained in the gas, then a first side of a gas/gas heat exchanger in which the process gas surrenders heat, then a condenser in which the process gas is cooled to below the boiling point of the contaminating vapours to form condensate, then a second side of the exchanger in which the process gas recovers a part of the previously transferred heat, to then enter a container where the polymer granules are treated.

A process for drying polymeric granular material (2) comprises the steps of: —introducing into said drying hopper (10) a process gas having a predefined flow rate so as to heat and dry the polymeric granular material, —discharging a portion of the heated polymeric granular material into a transformation unit (100) for the polymeric material; —loading an amount of fresh polymeric granular material (2a) into the drying hopper. The process gas flow rate is regulated by measuring the inlet temperature of the fresh polymeric granular material (2a) and comparing it with a predefined inlet temperature of the fresh polymeric granular material, on the basis of which the predefined process gas flow rate has been calculated. If the measured inlet temperature is different from the predefined inlet temperature, the flow rate of the process gas is regulated on the basis of the measured inlet temperature.