SUSPENDED LAYER DRYER WITH INERT ATTACHMENT Russian patent published in 2018 - IPC F26B17/10 

FIELD: technological processes.

SUBSTANCE: invention relates to the disperse materials drying technique in fluidized bed and can be used in dye-making and dye-using industries, in food, pharmaceutical, microbiological, chemical and other industries. This is achieved by the fact, that in a suspended layer dryer with an inert attachment comprising a housing with a gas distribution grid in the form of a package of grids assembled from springs arranged in the same plane and connected to vibrating plates, and with an inert attachment, nozzle, a vibrating mechanism made in the form of plates mounted in the dryer housing with the possibility of rotation relative to the axes, additional plates of different lengths are rigidly fixed on the vibrating plates in staggered order, at an angle to vibrating plates lying in the range, for example, 80…40°. Additional plates free tops at the right vibrating plate face upward, while at the left one they face downwards, wherein in the lower part of the housing a catchment system is arranged including an acoustic installation, where an acoustic agglomeration of fine particles takes place, a cyclone and a baghouse filter with a hopper. Nozzle is made acoustic in the form of a housing with placed inside an acoustic oscillations generator in the form of a nozzle and a resonator, nozzles for air and liquid supply. Acoustic oscillations generator is made in form of conical nozzle coaxial with housing and having annular throttle opening with external diameter dc formed by nozzle cut and resonator rod with diameter dct, and an annular cavity resonator of length h, formed by a resonator rod and a cylindrical cavity with an outer diameter dp in the fastening member. Volume resonator cavity is separated from nozzle cut at distance b, and air supply pipe is perpendicular to housing axis and is connected to annular cavity formed by roller and inner surface of housing. On the platen a cage with throttling holes is fixed coaxial with the ring throttle opening, and also a coaxially fixed resonator rod, and the sprayed liquid is supplied through a branch pipe perpendicular to the axis of the housing into an annular cavity, formed by the casing and the outer surface of the nozzle. At that, one end of the casing is made solid and is connected to the housing, and in the other end, enclosing the conical nozzle, throttling openings are made coaxial with the annular throttle opening. From the side, opposite to volumetric resonator, provision is made for adjustment mechanism in the form of hand wheel with packer, which is installed on the roller free end, and the ratio of the annular volumetric resonator length h to the distance b from the volumetric resonator cavity open surface to the nozzle cut lies in the optimal range of values: h/b=0.7÷1.3; ratio of the annular volumetric resonator outer diameter dp to the resonator rod outer cylindrical surface diameter dct lies in the optimal range of values: d_p/d_ct=1.2÷1.9; ratio of the nozzle annular throttle opening diameter dc to the resonator rod outer cylindrical surface diameter dct lies in the optimal range of values: d_c/d_ct=1.1÷1.7. External diffuser is coaxially attached to the nozzle casing, and an internal perforated diffuser is coaxially attached to the fastening element of the annular cavity resonator with the resonator rod in such a way that the output sections of the external and internal diffusers lie in one plane perpendicular to the axis of the annular volume resonator. Additional flow divider coaxially attached to the external diffuser is made in the form of a cylindrical shell, at the end part of which a perforated plate is fixed on the side opposite the diffuser.

EFFECT: increase in drying performance.

1 cl, 4 dwg