SU1543207A1 - Installation for drying materials - Google Patents

Abstract

The invention relates to a drying technique and can be used in the chemical and other industries of the industry. The invention improves productivity by increasing the concentration of material in the central zone of the chamber. The installation contains a drying chamber in the form of a polyhedron 1, joined in the lower part with a large base of a regular truncated pyramid 2 (for example, tetrahedral) with slotted channels and longitudinal partitions 5 installed in them for supplying the additional heat transfer medium to the drying chamber in the form of semi-bounded canals 6 placed above the channels on the inner surface of the drying chamber, jets. Under the action of these jets, a part of the dried material is pressed out from the near-wall area into the central zone of the chamber, in which, by oscillating movement of the conical spring insert 8 and twisted in the same direction with the help of the main flow swirler, the steady flow is increased and the concentration of the dried material is increased in the zone intense heat exchange. The dry product is removed from the chamber through the device 13, and the spent coolant through the nozzle 14 into the dust cleaning system. 3 il.

Description

The invention relates to a drying technique and can be used in the chemical, food, microbiological and other industries.

The purpose of the invention is to increase productivity by increasing the concentration of the material in the central zone of the chamber.

FIG. 1 shows the installation, section, general view; in fig. 2 - the same, top view; in fig. 3 installation, axonometrics.

The installation comprises a chamber made in the form of a polyhedron conjugated in the lower part with a large base of a regular truncated pyramid 2 (for example, tetrahedral), having slotted channels 3 between the faces, extending from the bottom upward sections, tangentially to the inner the surface of the pyramid 2 and connected to the individual nozzles 4 for supplying additional coolant. In the slotted channels 3, longitudinal partitions 5 are installed, partly extending into the chamber, and on the inner surface of the chamber, above the slotted channels 3 are peaks 6. A gas distribution grill 7 is placed in the lower base of the pyramid 2, and a spring-taper insert 8 is installed along the chamber axis. whose top is rigidly attached to the grid 7, and the base to the rod 9, having the possibility of reciprocating motion.

The installation also contains a main heat carrier pipe 10 with a swirler 11 placed inside it, a device 12 for loading wet material and discharging a dry product 13, and a pipe 1 4 for withdrawing the processed heat carrier.

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The installation works as follows.

The original wet material is fed to the drying chamber with a screw feeder. The supply to the lower part of the drying chamber of an additional coolant in the form of flat jets is provided by longitudinal partitions 5 installed in the slotted channels 3, partially entering inside the drying chamber and placed on the inner surface of the chamber above the channels 3 canals 6.

Under the action of these jets, a part of the material being dried is pressed out from the near-wall area into the central zone of the drying chamber, in which steady spouting is performed by means of oscillatory movement of the conical spring insert 8 and swirled in the same direction with the help of the swirler 11 of the main heat carrier. .

This achieves the expansion of the spout area Vi increasing the concentration of the material being dried in the fountain core (central part of the drying chamber) and thus a significant increase in plant capacity, since the heat exchange intensity in the fountain core is 1 times higher than in the peripheral zone.

The fountain-forming particles of the material being dried are separated at the top of the drying chamber and then dipped into the peripheral zone.

In the peripheral zone, the particles of the material being dried make a pulsating motion along the edges of the pyramid 2 in the streams of additional coolant flow, which prevents the formation of stagnant zones and also intensifies the drying process.

The dry product is removed from the drying chamber through the nozzle 13, and the reflected coolant through the nozzle into the dust collector system (not shown) and then into the atmosphere.

Claims (1)

Invention Formula A plant for drying materials comprising a chamber made in the form of a polyhedron conjugated to a large base of a truncated pyramid, which has slotted channels between the faces, extending from bottom to top, directed tangentially to the inner surface of the pyramid and increasing the concentration of the material in the center in the zone of the chamber, each slotted channel is connected to an individual branch pipe for supplying an additional coolant and is equipped with a visor located in its upper part and a longitudinal partition, located in the chamber, at the same time, the gas distribution grid is additionally installed in the lower part of the chamber, and above it along the chamber axis there is a spring conic insert, the apex of which is directed toward the grid and rigidly Accessory-15 supply pipe is fixed, and the base is connected heat carrier, the main heat carrier supply pipe and the device for loading and unloading the material, which is The goal is to increase the productivity of the PU-ED. .- /: - g Xjrrf- v, № + to the rod, having the possibility of reciprocating motion, with the pipe supplying the main coolant is connected to the sublattice / j ; / Fi & 7 Fie.2