SU585388A2 - Interspersion heat-exchanging device of rotary furnace - Google Patents

Description

one

The invention relates to heat-treated devices of rotary kilns, for example, rotary kilns for tepovoy processing of cement raw mix.

From the main auth. St. i No 420857 A rotary furnace rotary heat exchanger device, 1, containing a stopper repaired to the furnace body at an angle to each other not less than two trapezoidal pastines inclined to the plane perpendicular to the axis of rotation of the furnace, is known, and the plates are made diverging along the furnace rotation. and installed with a gap between the large bases of the trapezium ij.

A disadvantage of the known heat exchanging device is the formation of an uneven movement pattern of the material layer, leading to a deterioration of the technical and economic performance of the furnace.

The chain of the invention is to ensure uniform movement of the layer of material.

This is achieved by the fact that in the pouring-over heat exchange device of the rotary kiln a trapezoidal plate

(THAT the movement of the material is made elongated in the direction of the outflow of the material of the short-circuit of the heat exchanging device and a value of 2.0-2.5 of the size of the gap between the large trapezium bases.

FIG. 1 shows a general view of the pouring heat exchange device; in fig. 2 is a view along arrow A in FIG. one.

Heat exchanger 3 is attached to the body of the furnace 1 by means of Hronshtv 2. The heat exchanging device consists of two trapezoidal plates 4 that embed a small base a and a larger base b and are made divergent during the rotation of the furnace 1.

The plate is located along the course of the movement of the material. (In Fig. 2 it is indicated by arrow B). elongated in the direction of the outflow of material from the heat exchanging device 3 by an amount of 2.0-2.5 of the size of the gap between the large bases of the trapezium.

Claims (1)

As the furnace body 1 rotates, the heat exchanger device 3 moves towards the pouring material layer. At the same time, the material fills the internal space formed by the inclined plates 4. With the fullest rotation of the furnace 1 |. and lifting the plates 4 of the material flows through the gap, while the material is perceived by the plate 4, which changes the direction of its movement, which leads to a change in the nature of its expiration. The nature of the outflow in this case approaches normal. The material is further agitated by lateral movement. The lengthening of the plate 4, located along the movement of the material, allows one to organize the approximation of the movement of the material and to preserve the effect obtained from an increase in the slope of the material. It has been established that the size of the elongation of the plate 4 should be within 2, O-2.5 of the size of the gap between the large bases of the trapeziums. The lower limit is defined on the conditions for maintaining the normal flow regime. The test institute limit is determined from the condition of complete precipitation of the material and heat exchanger device 3 with a material outflow equal to 0.1-0.3 of the lifting rate of the heat exchanging device 3, equal to the speed of furnace 1, without dispersing over the gas flow section. The manufacture of a heat exchanger is possible from a standard rolling plate. Claims of the Investigation Rotary kiln heat exchange device according to the author. St. Ni 420857, characterized in that, with a chain of ensuring uniform movement of a layer of material: a trapezoidal plate, located along the movement of the material, is made extending towards the outflow of material and exchanging a device between 2.0 and 215 the size of the gap between the large base of trapeziums . Sources of information taken into account in the examination: 1. USSR Copyright Certificate 420867, 1КП. T 27 B 7/16, 1972. Fi9.1