Segmented reactor for hydrothermal synthesis in desulfurization gypsum quality improvement

A segmented reactor for hydrothermal synthesis in desulfurization gypsum quality improvement, comprising:

• a mixing and incubation device and a segmented pressurized reaction device sequentially connected and assembled in that order;
• wherein the mixing and incubation device comprises:
• a premixing reactor (3), defining a steam-injection feed inlet (2) and configured to preheat and mix steam with reaction feedstock;
• a high-speed stirring and mixing component (4), disposed within the premixing reactor
• (3) and configured to uniformly mix a gypsum slurry with the steam;
• and
• a material conveying and dispersing component (5), disposed at a tail end of the premixing reactor (3) and configured to convey the gypsum slurry from the premixing reactor (3) to a pressurized reactor (12) while maintaining in a uniformly mixed state;
• and
• wherein the segmented pressurized reaction device comprises:
• the pressurized reactor (12), having a rotatable cylinder, wherein an interior of the rotatable cylinder defines a primary reaction zone and a residual reaction zone;
• a material tumbling, dispersing and conveying component (14), fixed to an inner wall of the rotatable cylinder and configured to tumble, disperse, and convey the gypsum slurry;
• and
• a steam spray component (13), rotatably mounted along an axial direction of the pressurized reactor (12), wherein the steam spray component (13) comprises a plurality of steam injection nozzles arranged along a movement direction of the gypsum slurry, a number of the steam injection nozzles in the primary reaction zone is greater than that in the residual reaction zone, and a distribution density of the steam injection nozzles in the primary reaction zone is greater than that in the residual reaction zone.