Disclosed is a slurry drying plant (1) comprising a slurry inlet (2) for feeding slurry to the slurry drying plant (1) and two or more meshing screw conveyors (3, 4) arranged to at least partly divide the slurry while conveying the slurry in a transport direction from the slurry inlet (2) to a slurry outlet (5). The slurry drying plant (1) further includes slurry heating means (6) comprising means for passing superheated steam substantially at atmospheric pressure past the slurry and the two or more meshing screw conveyors (3, 4), while they are conveying the slurry. Furthermore, a method for drying slurry and use of a slurry drying plant (1) is disclosed.

Disclosed is a slurry drying plant (1) comprising a slurry inlet (2) for feeding slurry to the slurry drying plant (1) and two or more meshing screw conveyors (3, 4) arranged to at least partly divide the slurry while conveying the slurry in a transport direction from the slurry inlet (2) to a slurry outlet (5). The slurry drying plant (1) further includes slurry heating means (6) comprising means for passing superheated steam substantially at atmospheric pressure past the slurry and the two or more meshing screw conveyors (3, 4), while they are conveying the slurry. Furthermore, a method for drying slurry and use of a slurry drying plant (1) is disclosed.

The invention relates to a device for the heat treatment of a product, comprising an enclosure, means of conveyance inside the enclosure, which comprise a screw mounted so as to rotate in the enclosure about a geometrical rotational axis and means for rotating the screw about said axis, and means for heating the screw by Joule effect. According to the invention, the screw comprises a strip which is made of an electrically insulating material and is applied to the screw so as to form an outer circumference of the screw.

The invention relates to a device for the heat treatment of a product, comprising an enclosure, means of conveyance inside the enclosure, which comprise a screw mounted so as to rotate in the enclosure about a geometrical rotational axis and means for rotating the screw about said axis, and means for heating the screw by Joule effect. According to the invention, the screw comprises a strip which is made of an electrically insulating material and is applied to the screw so as to form an outer circumference of the screw.

A method of producing a bioplastic granulate on the basis of sunflower seed shells or sunflower seed hulls. In the method, ground sunflower seed shells/sunflower seed hull material is provided, wherein the particle size is in the region of 3 mm or less, preferably in the region of 0.01 to 1 mm, preferably in the region of 0.1 to 0.3 mm. A plastic material is provided, which is compounded with the sunflower seed shells/sunflower seed hull material, wherein the compounding operation is preferably effected in an extruder, preferably a double-screw extruder. The compounded material is chopped at the end of the extruder section with a tool with the addition of water, wherein the water is at a temperature of preferably more than 50 C., preferably about 80 to 90 C., to cool down the compound material. During the compounding operation, the compounding material is subjected to atmospheric degassing and/or vacuum degassing.

A drying device for a mixture of a liquid and one or more solids, having a receiving container for the mixture, a rotor that is situated with one section of its circumference in the receiving container, and a drive device for rotatively driving the rotor, the rotor having a plurality of flat entrainment elements, characterized in that the entrainment elements have a radial orientation with respect to a rotational axis of the rotor, wherein at least some of the entrainment elements have a configuration in which relatively narrow entrainment elements alternate with relatively wide entrainment elements in the circumferential direction of the rotor, and/or at least some of the entrainment elements are provided with a plurality of through openings.

A drying device for a mixture of a liquid and one or more solids, having a receiving container for the mixture, a rotor that is situated with one section of its circumference in the receiving container, and a drive device for rotatively driving the rotor, the rotor having a plurality of flat entrainment elements, characterized in that the entrainment elements have a radial orientation with respect to a rotational axis of the rotor, wherein at least some of the entrainment elements have a configuration in which relatively narrow entrainment elements alternate with relatively wide entrainment elements in the circumferential direction of the rotor, and/or at least some of the entrainment elements are provided with a plurality of through openings.

The present disclosure provides a bottom drying type sludge drying device, comprising: a housing in which a curved-face partition is provided for separating space in the housing into first and second drying chambers; a feed gate and an outlet provided on an upper portion of the first drying chamber, and a discharge gate provided on the circumferential wall of the first drying chamber. An inlet is provided on a side wall or bottom of the second drying chamber. The curved-face partition comprises a depressed area in which a communication opening is formed, and a bridge-shaped element is provided above the communication opening, forming a lateral aperture between the bridge-shaped element and the partition. A sludge stirring assembly is provided in the first drying chamber, which comprises a rotary shaft and a stirring unit fixed on the rotary shaft, and the stirring unit is configured to cut, break and stir the sludge and/or that a front end thereof faces and is close to the lateral aperture, such that the front end scrapes the sludge in or at the communication opening as the stirring unit rotates. The present disclosure further provides a method of drying sludge using a sludge drying device.

Apparatus for pressing and drying a pre-defined amount of waste includes a metal main frame positioned to provide rigid support, and a body mechanically linked to the main frame through a plurality of linkage plates. The apparatus also includes an inlet vertically mounted on the body and a twin screw assembly to press and dehydrate the pre-defined amount of waste. A plurality of mesh screens is rigidly linked to the main frame along the longitudinal axis of the apparatus to remove compressed liquid. The body is also designed to support rotation of the twin screw assembly, and the inlet includes an ingress cross-sectional opening to receive the pre-defined amount of waste.

Apparatus for pressing and drying a pre-defined amount of waste includes a metal main frame positioned to provide rigid support, and a body mechanically linked to the main frame through a plurality of linkage plates. The apparatus also includes an inlet vertically mounted on the body and a twin screw assembly to press and dehydrate the pre-defined amount of waste. A plurality of mesh screens is rigidly linked to the main frame along the longitudinal axis of the apparatus to remove compressed liquid. The body is also designed to support rotation of the twin screw assembly, and the inlet includes an ingress cross-sectional opening to receive the pre-defined amount of waste.