VORTEX DRYING CHAMBER FOR DRYING DISPERSE MATERIAL IN SWIR FLOW OF HEAT CARRIER WITH SHF POWER SUPPLY Russian patent published in 2011 - IPC F26B17/10 F26B3/347 

FIELD: machine building.

SUBSTANCE: vortex drying chamber for drying disperse material in swirl flow of heat carrier with SHF-power supply consists of cylinder case with inlet branch for introduction of gas suspension and outlet branch for withdrawal of dried material equipped with SHF-emitter. The distinguished feature of the invention is fluoro-plastic coating of internal surface of the case of the vortex drying chamber to reduce attrition of dried material; also, the branch for introduction of gas suspension is converging at input to the drying chamber. Inside the vortex drying chamber on its side surface there are installed local accelerators of heat carrier flow and guiding insertions made of radio transparent material. Notably, the local accelerators of heat carrier flow are secured on side surface inside the vortex drying chamber so, as to form a stable rotating circular layer of being dried particles of material and to avoid their accumulation in a zone of maximal resistance to particles motion. The guiding insertions separating dried particles from the main rotating circular layer and guiding them into the central zone of the vortex drying chamber are arranged in a zone of particles return to an elevation point. The SHF emitter is arranged tangentially on external cylinder surface of the case of the vortex drying chamber to facilitate the highest density of flow of electromagnetic energy concentrating in a zone of a rotating circular layer of being dried particles of material.

EFFECT: upgraded quality of dried material, intensified process of heat and mass exchange due to raised activity of hydro-dynamic conditions in drying chamber resulted from increased inter-phase relative rates of heat carrier and particles of disperse material, also, facilitation of stable swirl flow of gas suspension and reduced power expenditures for drying process; increased efficiency of absorption of supplied energy with being dried material; simplified design of vortex drying chamber.

3 dwg