Abrégé

Disclosed in the present application is a three-stage rotary furnace, comprising a drum, a furnace head device, a furnace tail device, a solid-phase conveying device, a follow-up jacket and an intra-furnace gas exhaust box, wherein the drum rotates continuously in one direction, the interior thereof is successively divided into a pre-drying section, a drying section and a carbonization section which are independent from each other from a feeding end to a discharging end, and the pre-drying section is in communication with the furnace head device; two ends of the solid-phase conveying device are in communication with two adjacent process sections; the follow-up jacket is fixed on a wall of the drum; the drying section and the carbonization section are indirect heating sections; and the pre-drying section is an indirect heating section and/or a direct heating section. The intra-furnace exhaust box is fixedly arranged, an outer wall of the drying section is rotationally connected to the intra-furnace exhaust box in a sealing manner, a drum wall of the drying section is provided with a gas output pipe group which is in communication with the intra-furnace gas exhaust box and the interior of the drying section, and the intra-furnace exhaust box is provided with a second gas exhaust port and a fourth ash discharge port. By means of the three-stage rotary furnace, different processes of materials are completed in one rotary furnace, a residence time of the materials is controlled, and gas in the drying section is discharged from the intra-furnace exhaust box.

Classes IPC  ?

• C10B 53/04 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de charbon pulvérulent
• C10B 57/10 - Séchage
• C10B 57/16 - Caractéristiques des procédés de carbonisation à haute température
• C10B 1/10 - Cornues tournantes

Abrégé

Disclosed is a segmented rotary furnace, comprising a roller, a furnace head device, and a furnace tail device. Both ends of the roller are rotatably and sealably connected to the furnace head device and the furnace tail device which are fixedly arranged, respectively. The roller can continuously rotate in the same direction. The segmented rotary furnace further comprises: one or more segmented plates arranged in the roller, the edges of the segmented plates being sealably connected to the inner wall of the roller, and the segmented plates being used for dividing the roller into a plurality of working condition segments independent from each other along the axial direction; and a solid-phase conveying device, both ends of the solid-phase conveying device being communicated with two adjacent working condition segments, and the solid-phase conveying device being used for conveying solid materials between the two adjacent working condition segments. According to the segmented rotary furnace, the roller is divided, by the segmented plates, into a plurality of working condition segments independent from each other, different working conditions are allowed to be set in each working condition segment, the corresponding process of the materials is completed in each working condition segment, and the adjustment of the solid material conveying and staying time among the working condition segments is achieved by means of the solid-phase conveying device.

Classes IPC  ?

• C10B 51/00 - Distillation destructive des matières carbonées solides par emploi combiné du chauffage direct et du chauffage indirect
• C10B 47/36 - Autres procédés dans des fours munis de transporteurs mécaniques avec dispositifs racleurs rotatifs dans des fours à plusieurs étages
• C10B 1/10 - Cornues tournantes

Abrégé

Disclosed in the present application is a two-stage rotary furnace. The two-stage rotary furnace comprises a drum, a furnace head device, a furnace tail device, a solid-phase conveying device, a follow-up jacket, a central discharging mechanism and a furnace-tail gas intake cylinder, wherein the drum rotates continuously in one direction, a discharge end thereof is closed, and the interior thereof is successively divided, from a feed end to the discharge end, into a drying section and a carbonization section which are independent from each other; two ends of the solid-phase conveying device are in communication with two process sections; the follow-up jacket is fixed on a drum wall of the drum; the carbonization section is an indirect heating section; the drying section is an indirect heating section and/or a direct heating section; the central discharging mechanism is fixed at the discharge end of the drum, is in communication with the carbonization section, is rotationally connected to the furnace tail device in a sealing manner, and is used for controlling the discharge of a pyrolysis gas and biological carbon in the carbonization section to the furnace tail device; and the furnace-tail gas intake cylinder is immovable and is rotationally connected to the drum wall at the discharge end of the drum in sealing manner, and is in communication with the follow-up jacket, and heated gas is introduced therein. By means of the two-stage rotary furnace, different processes of materials are completed in one rotary furnace, and a residence time of the materials is controlled.

Classes IPC  ?

• C10B 51/00 - Distillation destructive des matières carbonées solides par emploi combiné du chauffage direct et du chauffage indirect
• C10B 47/36 - Autres procédés dans des fours munis de transporteurs mécaniques avec dispositifs racleurs rotatifs dans des fours à plusieurs étages
• C10B 1/10 - Cornues tournantes