SU1041844A1 - Device for cooling rotating furnace discharge end - Google Patents

Abstract

1. DEVICE FOR COOLING THE UNLOADING END OF A ROTATING FURNACE, containing heat-receiving pipes placed inside the body on the surface of the lining, the input and output ends of which are combined by the Kortuyktors for the supply and removal of cooled and heated water, characterized in that, in order to extend the life of the vessel, the cooling and heated water is different, then, in order to increase the life time of the pipes. cooling water temperature, it is equipped with a tubular heat exchanger, out of the two HHM covering the housing with a gap of tubular panels in which the pipes are bent around the circumference of the housing B with are interconnected in each panel by means of manifolds for supplying cooling water to the outlet, placed respectively under the body and above it, while the tubular heat exchanger is sequentially, counting along the cooling water, connected to the cooling water supply collector. in a furnace. 2. The device according to claim 1, which is in such a way that the heat-receiving tubes are bent around the circumference of the furnace, b and the collectors are placed along its core.

Description

00 4 4 The invention relates to devices for cooling the unloading equine rotary kiln and can be used in metallurgical, chemical, cement and other areas of the invention used for the heat treatment of materials rotating. A device for cooling the case of the furnace stove is known, which contains a piping system concentrically covering the furnace case with a gap, and water F 1 circulates through KOTofftiM. The disadvantage of this device is the low degree of water heating, which is observed by the low efficiency of heat exchange between the casing and the pipes. In addition, the lack of cooling of the internal space of the cable reduces the effectiveness of the oh-sagging and calcined material. The closest to the proposed technical essence and achieved the result is a device for ojtpolnuyu rotating rotary kiln, containing located inside the case on the surface of the lining of heat-receiving pipes, inlet and outlet ends of which are combined by collectors for supplying and discharging cooling and heated water 2J. The disadvantage of this design is the corrosion of the outer shell of the end of the furnace due to the direct contact of the shell with water falling on the shell from the external assembly above the kiln shell. In this case, intensive precipitation of salts takes place in the pipes located inside the body and on the surface of the body. All this reduces the service life of the discharge end of the furnace. In addition, in this device it is not possible to heat the water to a high temperature, since the pipes communicate with the open container, which limits its use for industrial purposes. The purpose of the invention is to increase the service life of the lining by raising the temperature of the cooling water. This goal is achieved by having a device for engaging the discharge end of a rotary kiln containing heat-receiving pipes placed inside a body on the surface of the lining, whose inlets and outlets are integrated with collectors for supplying and discharging cooling and heated water, sleep & the same tubular heat exchanger, made of two covering the furnace body with a gap of tubular panels, pipes. in which the cai case is bent around the circumference and interconnected in each panel by means of collectors for supplying and discharging cooling water, placed respectively under and above the furnace body, with this tubular heat exchanger sequentially, counting along the cooling water, is connected to the cooling water collector in tepsovospimayuschie pipes placed in the furnace. In addition, the heat-absorbing curved around the circumference of the furnace, and the collectors are placed along its forming. FIG. 1 shows the discharge end of the furnace, a longitudinal section; in fig. 2j, section A-A in FIG. 1. The discharge end of the furnace 1 has a lined body 3 placed inside the connecting plate 2, inside which are heat-receiving pipe 4. The inlet and outlet ends of the pipes 4 are combined by a collector 5 for supplying cooling water and a collector 6 for draining the heated water. A tubular heat exchanger 7 is mounted around the furnace body 3, made of two enclosing body 3 with a gap of panels 8. The pipes in panels 8 are curved around the circumference of body 3 and connected via a collector 9 located under the body 3 to supply cooling water and a collector 10 placed above the stove 3, for draining heated water. The collector 10 of the tubular heat exchanger 7 is connected to the collector 5 of the heat-receiving pipes 4 supplying cooling water. Water is supplied to the collector 9 through the pipe 11. The device operates as follows. The water entering the collectors 9 is distributed through the tubular heat exchanger 7 and, passing through it, is heated by heat radiation from the casing 3 of the loading end of the furnace 1 to 50-100 C. The heated water through the collector 10 is directed to the collector 5 and, after passing through the system of heat-absorbing pipes 4, is heated by heat radiation from the furnace lining and calcined material to 100-ZOO C and is diverted through collectors 6 for further use, for example steam generation. Heat-receiving pipes 4 are curved around the circumference and are located in the upper part of the furnace 1 with a gap to the lining.

3,1041

at the same time, the lecturers 5 and 6 are located along the forming furnace.

The proposed device makes it possible to cool the discharge end of the furnace, both outside and inside, while raising the coolant temperature, by connecting the collectors located above the furnace housing with the collectors inside the furnace. Poi. Since the water in the pipes located outside the furnace and inside it does not come into contact with the oxygen of the atmosphere, this

S444

avoids corrosion of pipes and heat water to high temperatures.

Lack of contact of the pipes located inside the furnace body with burned -. abrasive wear and thus increases the reliability of the discharge end of the furnace. Moreover, the absence of direct contact of the discharge end of the furnace with water eliminates corrosion from the surface of the furnace, which also increases its service life.

one

F (/ g.

AT:

FIG. 2

Claims (2)

1. DEVICE FOR COOLING THE UNLOADING END OF A ROTARY FURNACE, containing heat-absorbing pipes located inside the housing on the surface of the lining, the inlet and outlet ends of which are joined by collectors for supplying and discharging, cooler and heated water, characterized in that the service life is longer for by increasing the temperature of the cooling water, it is equipped with a tubular heat exchanger made of two covering the furnace body with a gap of the tubular panels, the pipes in which are bent around the circumference of the body. and interconnected in each panel by means of collectors for supplying and discharging cooling water, located respectively under the casing and above it, while the tubular heat exchanger in series, counting along the cooling water, is connected to a collector for supplying cooling water to heat-receiving pipes placed in the furnace. 2. The device according to π. 1, due to the fact that the heat-receiving pipes are bent around the circumference of the furnace, and the collectors are placed along its generatrix. SU ..., 1041844> 1 1041