SU1210028A1 - Apparatus for drying solutions and suspensions - Google Patents

Description

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The invention relates to a technique for drying solutions and suspensions and can be used for drying sewage sludge in the engineering, food, chemical and other industrial sectors.

The purpose of the invention is to increase productivity and improve the quality of drying.

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The drawing shows schematically the proposed device.

The device contains a chamber in the form of two truncated cones 1 and 2 with nozzles of the inlet 3 and outlet 4 of the heat carrier agent, a mechanical sprayer 5 in the lower part of the central zone of the chamber, inert I bodies (nozzle) in the form of threads or tapes 6 freely suspended from wall of the upper cone 1 chamber. A conical floor funnel 7, extending from the roof. It is located at the axis of the sprayer 5, and its upper edge is in the plane of the joint between the cones 1 and 2 of the chamber. The diameter of the lower hole of the funnel 6 is not more than the outer diameter of the sprayer 5, and the upper one is not less than the diameter of the nozzle 4 of the drying agent.

The lower ends of the threads or ribbons 6 are located below the funnel 7 at the level of the spray 5.

The device works as follows.

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The drying agent is supplied through the nozzle 3, passes upwards by the sprayer 5, is deflected by the funnel 7 away from the center and crosses the bundle of threads or belts 6 in the transverse direction, giving them some heat, enters the expanded part of the chamber, passes by the funnel 7 to discharge pipe 4, again crossed the bundle of filaments or tapes 6 from the periphery to the center and carry away the dried material. Mechanical spray 5, turning, sprays the pulp (wet material). Particles of the material enter the flow of drying agent and are also partially deposited on the filaments or tapes or are crushed by them into smaller drops. Here, the particles perceive heat from the drying agent, dry, separate as a result of these oscillations (the threads are freely suspended and blown by the cross flow of the drying agent) from the filaments or ribbons .25 and removed through the outlet pipe 4. Since immobile, some heavier, as a rule, wet particles fall down through the hollow conical funnel 7 and fall back onto the sprayer 5,

In this way, an aerofont is provided in the drying chamber, the particles are recycled throughout the volume and deep drying is provided.

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VNRShPI Circulation 635

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Branch P1Sh Patent, Uzhgorod, Proektna St., 4

Claims (1)

DEVICE FOR DRYING SOLUTIONS AND SUSPENSIONS with a lower nozzle leading the coolant under the gas distribution grill and an upper nozzle for removing the coolant, containing a chamber in the form of two truncated cones connected by large bases, a mechanical atomizer and threads or ribbons freely suspended in the chamber, serving as an inert nozzle characterized in that, d · in order to increase productivity and improve the quality of drying, a funnel is additionally installed inside the chamber, the upper edge of which is located in the connection plane cones, while the diameter of the lower base of the funnel is equal to the outer diameter of the nozzle located above the central zone of the grate, and the diameter of the upper hole of the funnel has a size not less than the diameter of the heat transfer pipe, <$ and the threads or ribbons are fixed on the inner surface of the upper cone, and their free the ends are placed at sprayer level. SU,. „1210028> 12100 ^ 8