SU1765154A1 - Equipment for cooling of looses materials - Google Patents

Abstract

SUMMARY OF THE INVENTION: The device comprises a water bath, a rotating drum, a loading and unloading device. The drum is equipped with cooling pockets and assembled from sections. Sections are mounted from six plates made in the form of ravine trapezoids. Pockets are formed by connecting the plates successively around the perimeter of the section at an internal obtuse angle to each other alternately to the ends of the section with upper and lower bases with a single side slope. opposite the blunt inner corner. The width of the pockets is equal to the difference of the lengths of the upper and lower bases. Each of the trapeziums is joined by a side alternately followed by a trapezoid along its plane and passes through the top at the top base 10 and the side to form an internal cavity, sections in the form of a regular octahedron. The sections are interconnected into the drum by bottom bases of the trapezium. The lower base of the trapezium is larger than the side by the size of the upper base. One-sided overlap on the outer angle between the two plates is directed in the direction of rotation of the drum. 2 hp f-ly, 7 ill. yo

Description

The invention relates to the coke industry, namely to devices for cooling bulk materials, preferably coke.

Closest to the invention is a coke cooling device comprising a drum with cooling pockets and a fixed water bath in which the drum is made of regular truncated pyramids interconnected alternately with large and smaller bases to form ridges, and cooling pockets are formed on the outer drum surfaces by partitions connecting the nearest edges of the pyramids, and overlays connecting the nearest ridges.

The disadvantages of the known device are insufficient cooling efficiency due to low coke mixability and a certain orderliness of coke movement inside the drum, as well as insufficient water irrigation area of the drum surface from the pockets, which leads to insufficient heat exchange between coke and cooling water, as well as complexity designs.

The purpose of the invention is to increase the cooling efficiency and simplify the design.

This is achieved by the fact that the drum sections are mounted from six plates made in the form of equilateral trapezoids,

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pockets are formed by joining plates successively around the perimeter of the section at an internal obtuse angle to each other alternately to the ends of the section with an upper and lower base with one-sided overlap in the direction opposite to an internal obtuse angle equal to the width of the difference between the lengths of the upper and lower bases; alternately with a subsequent trapezoid along its plane and passes through the top at the top base and side, forming an internal cavity, section in the form of a regular oct the airfoil and the sections are interconnected into the drum by the lower bases of the trapeziums, the lower base of the trapeziums is larger than the side by the size of the upper base, and the one-sided inlet over the outer corner between the two plates is directed toward the rotation of the drum.

In this way, pockets of a diamond shape are formed on the outer surface of the drum along the entire perimeter, which captures certain volumes of water, which then, as the drum turns, spread over the entire surface of the drum elements and cover them with a continuous film of water. and the walls of the drum. The presence inside the drum directed towards each other at an angle and to the axis of rotation of the drum flat edges provides a violation of the stationarity of the flow of coke inside the drum and their high miscibility, which increases the intensity of heat exchange processes, coke and drum walls.

FIG. 1 shows the proposed device, a general view; in fig. 2 - front view drum; in fig. 3 is a longitudinal section of the drum of FIG. 2; in fig. 4 is an axonometric projection of a drum surface element in the form of an equilateral trapezium; in fig. 5 is an axonometric projection of the drum section of FIG. 2; in fig. 6 shows section A-A in FIG. 2; in fig. 7 is a section BB in FIG. 2

A device for cooling bulk materials includes a water bath 1, a rotating drum 2 mounted therein with loading 3 and discharge 4 devices. A sprinkler 5 is installed above the drum 2. A dephlegmator 6 is installed above the water bath 1.

The drum 2 is provided with rhomb-shaped pockets formed by protrusions 7 and assembled from sections 8 mounted from six plates made in the form of ravine trapezium 9. Trapezium 9 are connected in series along the perimeter of the section under

internal obtuse angle a to each other alternately to the ends of sections B and D with the upper 10 and lower 11 bases with one-sided overlap 12 in the direction opposite to the internal obtuse angle a with a width equal to the difference of the lengths of the upper 10 and lower 11 bases. Each of the trapezoids 9 is joined by its side 13 alternately with a subsequent trapezoid along its plane 14 and passes through the top 15 at the upper base of the trapezium 10 and the side 13 (the line connecting the two trapezoids along the plane 14 is shown in Fig. 4 by the dashed line), forming closed space in the form of a regular octahedron with edges in the form of equilateral triangles connected to each other along the sides ai with Се; ae with Cs; as with Sz; FOR with Sz; az with sa; aa with d.

Each of the mounted sections is connected to each other into the drum 2 with its lower bases 11 along ends B and G. To obtain pockets 16 of a diamond shape, the lower base 11 is larger than the side 13 by the size of the upper base 10. To provide the largest possible water volume with the pockets 16 and raising this water to a great height, one-sided overlap 12 at the outer sharp corner / 3 is directed in the direction of rotation of the drum 2.

The device works as follows.

Red-hot coke enters the rotating drum 2 with the help of the loading device 3 through a conical tube. The drum 2 is irrigated with water coming from the sprinkler 5. As the drum 2 rotates, the cooling-out pockets 16 of the diamond form capture the water cooling the coke. As the coke passes through the drum 2, it cools and is removed from the device with the aid of the unloading device 4. The coke inside the drum 2 along the horizontal axis moves from the load to the unloading due to the presence of helixes on the drum surface, and can also be adjusted by changing the angle of inclination of the axis of the drum 2 to the horizon.

The steam released during quenching of the coke is condensed in the dephlegmator 6, which reduces the water consumption for quenching. Water in the form of a film, a stack along the plate-walls of the drum 2 which are inclined towards each other, of each of the pockets, cools the most thermally loaded side of the drum 2.

As the coke passes through the drum 2, the plates 9 raise the portions of coke to a certain height and are thrown down, thus intensively mixing layers of coke with different temperatures, which causes an increase in the intensity of heat exchange between the coke and the walls. 16 are permanently covered with a thin film of water, with the water layers moving in pockets towards each other along planes inclined towards each other, which intensifies the heat exchange processes.

Technical and economic advantages are provided due to the intensification of heat exchange, due to the violation of the stationarity of the flow of coke inside the drum, the violation of the stationarity of the water flows in the water bath and on the drum surface due to the relative inclination to each other and to the axis of rotation of the walls-plates of which the drum is assembled, and also due to the simplification of the construction and technology of assembling the drum and pockets, which are assembled from identical-sized plate elements in the form of equilateral trapezoids.

Claims (3)

1. A device for cooling bulk materials, mainly coke, including a water bath, a rotating drum mounted in it with cooling pockets made of sections each of which is mounted from plates, means for loading and unloading material, characterized in that in order to increase cooling efficiency and simplify the construction, the sections are mounted from six plates made in the form of ravine trapeziums, the pockets are formed by connecting the plates successively around the perimeter of the section under the inner blunt angle to each other alternately to the ends of the section of the upper and lower bases with one-sided overlap in the direction opposite to the internal obtuse angle, the width equal to the difference of the lengths of the upper and lower bases, each of the trapezium joining the side alternately followed by a trapezium along its plane and passes through the top at the upper base and side, forming the internal cavity of the section in the form of a regular octahedron, and the sections are interconnected into the drum by the lower bases of the trapezium. 2. The device is pop, 1, characterized in that the lower base of the trapezium is larger than the lateral side by the size of the upper base. 3. The device according to claim 1, characterized in that the one-sided inlet over the outer angle between the two plates is directed in the direction of rotation of the drum. S  (, and l and Ј z that I I four 2 Fi.1 A, B % at tt V fr9l99U ill LA