SU966464A1 - Heat mass exchange apparatus - Google Patents

Description

(5) HEAT AND MASS EXCHANGE EQUIPMENT

one

The invention relates to heat and mass transfer devices for drying and cooling bulk materials and can be used in the chemical, metallurgical and other industries.

A known dryer for bulk materials, comprising a rotating body with inlet and outlet connections for a heat transfer medium and a mixing device arranged inside the body, made in the form of a system of tilted shelves that are inclined to overlap one another.

The disadvantage of this dryer is the inability to transition from a periodic mode of operation to a continuous mode and time control. stay in it without changing the mode of operation of the drive.

Closest to the present invention is a heat and mass transfer apparatus containing a rotating drum with nozzles of the input and output of coolant and bulk material and a pouring device inside the drum in the form of inclined shelves 2.

The disadvantage of this apparatus is the inability to switch from continuous to periodic operation and control of the residence time without changing the mode of operation of the drive.

The purpose of the invention is the expansion of technological capabilities.

The goal is achieved by the fact that on the inner surface of the drum there are reinforced blades and annular partitions separating them, and the shelves are inclined to the axis of the drum in its longitudinal section and interconnected to form at least two zigzag-like leaks adjacent to each other, each of which equipped with loading and unloading

branch pipes, while the loading nozzles are equipped with separating rotary valves, and the outermost of them are connected to the input and output nozzles of the material, and the discharge nozzles are offset from the loading nozzles by the width of the estrus along the axial movement of the material and placed between the annular partitions.

FIG. 1 shows a heat and mass transfer apparatus, section; in fig. 2, section A-A in FIG. one.

The heat and mass transfer apparatus contains a drum 1 mounted on rollers 2 with rotation from a gear wheel 3, material input and output nozzles 5, input nozzles 6 and heat exchanger 7, blades 8 separated by annular partitions 9 fixed stand 10 with fixed on it established with overlapping one another with shelves 11, which form Zagzag-shaped chutes 12-14 with loading 5 and unloading 16 nozzles. The loading nozzles 15 are equipped with separating rotary valves 17 and 18, fixed by means of the handles 19 and 20. The drum 1 has end covers 21.

Heat and mass transfer apparatus, operates as follows.

The drum 1 is rotated through the aubut wheel 3 from the drive (not shown in Fig.). The material being processed through the loading nozzle enters the chute 12 and is dumped along the inclined shelf system 11 onto the inner surface of the drum 1 and is caught by the transport blades 8. The blades 8 lift the material and dump it into the feeding chute 15 of the chute 13. Similarly, the material from the chute 13 enters. chute C, and then from chute 14 into the outlet 5 of the material and through it is removed from the apparatus.

To regulate the residence time of the material in the heat and mass transfer apparatus, rotary dampers 17 and 18 are used. When the damper 1.7 is moved to the extreme right position using the handle 19, the material, mined estrus 12, enters the estrus 13, thus reducing the residence time of the material in the apparatus.

When translated to the right, the flap-18 material, the heat of 14, falls into

outlet pipe 5, which also reduces the residence time of the material in the apparatus.

For operation of the apparatus in a periodic mode, the flap 17 is moved to the extreme left position. Then ma-; The material passing along the shelves 11 of the chute 12. is captured by the blades 8 and is poured by them along the surface of the valve 17 back into the chute, 12.

Similarly, by moving the shutter 18 to the extreme left position, multiple transport of the material in the heat 14 is achieved.

The placement of the discharge pipes 16 of the chutes between the partitions 9 precludes material being poured between adjacent blades 8 along the generator of the drum 1.

invention formula

Heat and mass transfer apparatus containing a rotating drum with inlet and outlet nozzles for heat carrier and bulk material and a pouring device placed inside the drum in the form of fixed shelves obliquely installed with overlapping one another, in order to expand technological capabilities on the inner surface of the drum the blades and annular partitions separating them are strengthened, and the shelves are inclined to the axis of the drum in its longitudinal section and interconnected with the formation of at least two adjacent to each other zagazobnye leakage, each of which is equipped with loading and unloading nozzles, while the loading nozzles are equipped with separating rotary valve and, and the outermost of them are connected to the input and output nozzles of the material, and the discharge nozzles are shifted relative to the loading nozzles along the axial movement of the material and placed between the annular partitions.

Sources of information taken into account in the examination

1. USSR author's certificate ti 659859, cl. F 26 B 11/06, 1977.

2. Authors certificate of the USSR. № 174553, cl. F 26 B 11/06, 1964.

Claims (1)

Claim A heat and mass transfer apparatus comprising a rotating drum with inlet and outlet nozzles of a coolant and bulk material and a transfer device placed inside the drum in the form of fixed shelves slanted with overlapping one another, characterized in that, in order to expand technological capabilities, the blades are fixed on the inner surface of the drum and the annular partitions separating them, and the shelves have an inclination to the axis of the drum in its longitudinal section and are interconnected with the formation of at least two the zagzag-shaped leaks connecting to each other, each of which is equipped with loading and unloading nozzles, while the loading nozzles are equipped with dividing rotary dampers, and the extreme ones are connected to the material inlet and outlet nozzles, and the discharge nozzles are offset relative to the loading ones by the width of the estrus along the axial movement material and placed between the annular partitions.