SU1695104A1 - Recuperative cooler of rotary kiln - Google Patents

Abstract

This invention relates to a technique for cooling materials baked in rotary kilns and can be used in the building materials industry. The purpose of the invention is to increase the cooling efficiency of the material. For this, the recuperator cooler of the rotary kiln 1 with the conical discharge part 6 contains drums 2 and 3 arranged concentrically around the kiln body, through one which are displaced along the axis of the kiln 1 with the formation; two parallel rows The drums 2 of the first row in the course of the movement of the material are connected to the furnace by the charging pipes 4 installed on the cylindrical part of the furnace body, and the discharge pipes 5 to the conical unloading part 6 of the furnace at the smaller base of the cone. The drums 3 of the second row are connected to the furnace by the loading nozzles 7 installed on the conical discharge part b of the furnace i at the larger base of the cone. At the same time between the boot nozzles 4 and 7 of the first and second rows of drums 2 and 3 there is a restrictive retaining leg 8, the end of the conical part 6 of the furnace is located on the same vertical with the end of the drums 3 of the recuperator cooler. I z p f-ly, 3 ill. % Doi

Description

The invention relates to devices for cooling cement clinker, fireclay, magnesite and other materials fired in a rotary kiln, and can be used in the construction materials industry.

The aim of the invention is to increase the cooling efficiency of the material.

In FIG. 1 shows a longitudinal section through a recuperative cooler of a rotary kiln with a conical discharge part; in FIG. 2 and 3 are respectively sections A-A and BB in FIG. 1.

The recuperator refrigerator contains drums 2 and 3 arranged concentrically around the furnace body 1, through one: displaced along the axis of the furnace 1 with the formation of two parallel rows. Drums 2; the first row in the direction of movement of the material (through the loading nozzles 4 are connected with the cylindrical part of the furnace body 1, and by means of the discharge nozzles 5 - with the conical discharge part 6 of the furnace 1 at the smaller base of the cone. The drums 3 of the second row along the movement of the material have loading nozzles 7 mounted on the conical discharge part 6 of the furnace 1 at the larger base of the cone. Between the loading nozzles 4 and 7 of the first and second rows of drums 2 and: 3, a restrictive retaining ring is installed 8. The conical part 6 and 1 is made of such a length that its end face is on the same vertical line with the end face of the recuperative cooler drums 3. Moreover, the conical unloading part 6 of the furnace 1 can be equipped with a conveying guide device, for example screw-mounted lifting shelves (not shown in the drawings) , and the ends of the cone are made closed, for example, using a metal washer 9.

The refrigerator operates as follows.

The clinker from the rotary kiln 1 continuously through the nozzles 4 enters the drums 2 of the first row, passing through which it is cooled and unloaded through the discharge nozzles 5 into the conical discharge part 6 at its smaller base. Due to the presence of the inverse cone and the guide lifting shelves, the clinker returns to the larger base of the cone and, through the loading nozzles 7, enters the drums 3 of the second row. Passing the drums 3, the clinker is finally cooled and discharged from the recuperator refrigerator.

This path of clinker in the refrigerator is also facilitated by the size of the restrictive retaining ring 8, which prevents the clinker from entering the cylindrical directly into the conical part, as well as the presence of the inverse cone and sealing its ends. At the same time, the cooling air moving towards the clinker in drums 2 and 3, as well as in the direction of the clinker in the conical unloading part 6, enters the furnace hot, where it is used for burning fuel.

Thus, in the recuperator refrigerator, the residence time of the material increases by a factor of 2–3, the process of cooling the material improves, and the temperature of the secondary air entering the furnace for burning fuel increases, which allows us to save fuel consumption in the furnace.

Claims (2)

Claim 1. A recuperator cooler of a rotary kiln with a conical unloading part, comprising two rows of drums located concentrically around the furnace body, through one displaced along the axis of the furnace, communicating with its working space by means of loading nozzles and having discharge nozzles, and the loading nozzles of the drums of the first row in the direction of travel material installed on the cylindrical part of the furnace, characterized in that, in order to improve the cooling efficiency of the material, the discharge pipes of the drums of the first th row are connected to a conical discharge part of the furnace at its smaller base, and the loading tubes of the second row of the conical drums are connected to a discharge part at the larger base, the boot between the nozzles of the first and second rows of reels installed brace ring. 2. The refrigerator according to claim 1, with the fact that the end face of the conical discharge part of the furnace is located on the same vertical line with the end face of the drums of the second row of the recuperator refrigerator. FIG. 3