A single pass, multiple stage, rotary drum heat exchange dryer (22) is provided for drying products such as distillers grains and includes a tubular shell (64) with a moist product inlet (66), an opposed dried product outlet (70), and an internal drying chamber (78). The chamber (78) includes a convection drying first stage (80), and conductive drying final curing stage (82) an intermediate stage (84); the intermediate stage (84) is subdivided into a plurality of contiguous drying zones (86-92). The zones (86-92) include individual flighting assemblies (164) which are of substantially the same density and heat transfer ratios.

A heating device (124) for heating particles to be freeze-dried in a rotary drum (102) of a freeze-dryer (100) is provided, the device comprising at least one radiation emitter (202) for applying radiation heat to the particles, and a tube-shaped separator (204) for separating the particles from the at least one emitter (202). The separator (202) being integrally closed at one end and separating an emitter volume (206) encompassing the at least one emitter (202) from a drum process volume (126) inside the drum (102), wherein the heating device (124) protrudes into the drum process volume (126) such that said integrally closed end of the separator (204) is arranged inside the drum (102) as a free end.

A tumbler may be used as defluidizer, dryer, coater, classifier, or dynamic filter. The tumbler includes a rotatable drum that receives a solid/fluid slurry through an inlet chute. As the slurry travels through the drum, fluid exits the drum through a plurality of apertures in screens attached to the sides of the drum, while the solids continue along the drum's length until they reach one or more openings and exit the drum into an outlet chute. The outlet chute includes ridges that wrap around rings extending from the openings of the drum to prevent solids from escaping the outlet chute. To further dry the solids before they exit the drum, an air tube at least partially disposed within the drum is configured to introduce a flow of air into the drum.

A single pass, multiple stage, rotary drum heat exchange dryer (22) is provided for drying products such as distillers grains and includes a tubular shell (64) with a moist product inlet (66), an opposed dried product outlet (70), and an internal drying chamber (78). The chamber (78) includes a convection drying first stage (80), and conductive drying final curing stage (82) an intermediate stage (84); the intermediate stage (84) is subdivided into a plurality of contiguous drying zones (86-92). The zones (86-92) include individual flighting assemblies (164) which are of substantially the same density and heat transfer ratios.

A hybrid drying apparatus including: a bed portion having a horizontally disposed top surface; an object-to-be-dried supplying portion configured to spread an object to be dried on the top surface of the bed portion; and a driving unit configured to rotate and drive the bed portion or the object-to-be-dried supplying portion, wherein the object to be dried supplied from the object-to-be-dried supplying portion is spread on the top surface of the bed portion while the bed portion or the object-to-be-dried supplying portion is rotated, and the top surface of the bed portion is heated in such a manner that a lower portion of the bed portion is primarily heated so that the bed portion is used to dry the object to be dried coated on the top surface of the bed portion by the object-to-be-dried supplying portion.

A tumbler may be used as defluidizer, dryer, coater, classifier, or dynamic filter. The tumbler includes a rotatable drum that receives a solid/fluid slurry through an inlet chute. As the slurry travels through the drum, fluid exits the drum through a plurality of apertures in screens attached to the sides of the drum, while the solids continue along the drum's length until they reach one or more openings and exit the drum into an outlet chute. The outlet chute includes ridges that wrap around rings extending from the openings of the drum to prevent solids from escaping the outlet chute. To further dry the solids before they exit the drum, an air tube at least partially disposed within the drum is configured to introduce a flow of air into the drum.

The invention relates to a freeze-drying device comprising: an evaporation chamber (5) comprising heating means (15, 16), a condensing chamber (10) communicating with the said evaporation chamber, the said evaporation chamber (5) and the said condensing chamber (10) being mounted secured to one another about an axle (30) capable of rotating, characterized in that the device further comprises: a products inlet and outlet (1, 8) which are connected to the said evaporation chamber (5) by flexible connectors, the products inlet and outlet (1, 8) being mounted fixedly with respect to the evaporation chamber, and a motor (12) driving the said axle (30) on itself with the following back-and-forth movement: a first movement driving the said axle (30) in a first direction of rotation with an angle of rotation (1) of between 5 and 90, and a second movement driving the said axle (30) in a second direction of rotation, opposite to the first angle of rotation, with an angle of rotation (2) of between 5 and 90.

A system for drying a wet lactose product stream includes a disperser configured to disperse agglomerated lactose particulates in a wet lactose stream into a dispersed wet lactose stream. A back-mixed partial drying zone is configured to at least partially dry the dispersed wet lactose stream by recirculating a partially dried lactose stream with the dispersed wet lactose stream. A plug-flow secondary drying zone is configured to dry the partially dried lactose stream to generate a substantially dried lactose stream.

A hybrid drying apparatus including: a bed portion having a horizontally disposed top surface; an object-to-be-dried supplying portion configured to spread an object to be dried on the top surface of the bed portion; and a driving unit configured to rotate and drive the bed portion or the object-to-be-dried supplying portion, wherein the object to be dried supplied from the object-to-be-dried supplying portion is spread on the top surface of the bed portion while the bed portion or the object-to-be-dried supplying portion is rotated, and the top surface of the bed portion is heated in such a manner that a lower portion of the bed portion is primarily heated so that the bed portion is used to dry the object to be dried coated on the top surface of the bed portion by the object-to-be-dried supplying portion.

The invention relates to the field of petroleum processing, particularly to a method for processing heavy petroleum feedstock. The method for processing heavy petroleum feedstock comprises the steps of: slurry-phase hydrocracking (SPH) of a feedstock including a heavy petroleum feedstock and a carbon additive, followed by separation into a SPH-subjected feedstock stream and a heavy residue stream, wherein the heavy residue stream is a slurry of an unconverted high-boiling residue and a spent carbon additive; hydrocracking of the feedstock hydrocracking products obtained at the SPH step, in a gas phase with a fixed bed catalyst, followed by fractionation of resulting hydrocracking products; performing a method for purifying an unconverted residue of a heavy petroleum feedstock hydrocracking process from a spent carbon additive to obtain a spent carbon additive and a purified unconverted residue of a heavy petroleum feedstock hydrocracking. The technical effect resides in increasing the efficiency of separation of the spent carbon additive from the mixture of the unconverted residue with the solvent, ensuring stable equipment operation with a specified performance and preventing the clogging of equipment by deposits, thus avoiding long-term equipment downtime and labor-intensive work required to clean deposits from the equipment.