CN212842848U

CN212842848U - Delayed slag-tapping rotary kiln

Info

Publication number: CN212842848U
Application number: CN202021104087.4U
Authority: CN
Inventors: 黄爱军; 胡茂丽; 郑泽; 陈万军; 李岱宏
Original assignee: New Zhongtian Environmental Protection Engineering Chongqing Co ltd
Current assignee: New Zhongtian Environmental Protection Engineering Chongqing Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-03-30
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a time delay rotary kiln of slagging tap, including the kiln body, the kiln body includes furnace barrel body and stove tail, the internal diameter of furnace barrel body diminishes towards the direction of stove tail. By using the rotary kiln with the function of delaying slag discharge, the residence time of slag in the kiln can be prolonged, the slag can be combusted more fully, organic matters contained in the slag can be combusted in an all-around manner, and the thermal ignition loss of the slag can be reduced.

Description

Delayed slag-tapping rotary kiln

Technical Field

The utility model relates to a rotary kiln equipment technical field, concretely relates to rotary kiln of slagging tap delays.

Background

The rotary kiln is a main machine device for cement production, is widely used in many production industries such as building materials, metallurgy, chemical industry, environmental protection and the like, and mainly comprises a kiln cylinder body, a transmission device, a supporting device, a wheel retaining device, a kiln head sealing device, a kiln tail sealing device, a kiln head cover and the like.

In the rotary kiln in the prior art, the kiln tail structure is designed to be a straight cylinder, materials form a composite which rolls along the circumferential direction and moves from high to low along the axial direction under the inclination and slow rotation of the kiln body, and finally the kiln tail is discharged. In such a structure, the residence time of the slag in the kiln is short, and there is a problem that the combustion is insufficient and the thermal ignition loss of the slag is high.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a rotary kiln of slagging tap of delaying, can increase the burning time of slag in the kiln, reduce the hot ignition loss rate of residue to prior art exists not enough.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a time delay rotary kiln of slagging tap, includes the kiln body, the kiln body includes furnace barrel and stove tail, the internal diameter of furnace barrel diminishes towards the direction of stove tail.

The slag rolls in the furnace cylinder and moves towards the furnace tail, and the diameter of the furnace cylinder is reduced, so that the moving stroke is increased, the residence time of the slag in the kiln is increased, and the contact area of the slag and the inner wall of the furnace cylinder is reduced.

The delayed slag-tapping rotary kiln has the beneficial effects that: 1. by increasing the stroke, the residence time of the slag in the kiln is increased, the combustion can be more sufficient, and the hot ignition loss rate of the slag is reduced; 2. by reducing the inner diameter, the thickness of a slag layer can be increased, the heat storage of slag is increased, organic matters contained in the slag are combusted in an all-dimensional mode, and the thermal ignition loss rate is reduced.

Further, the furnace cylinder body comprises a reducing section, and the inner diameter of the reducing section is gradually reduced towards the direction of the furnace tail.

As the inner diameter is gradually reduced, an inclined platform is formed, so that the stroke is increased, the slag needs to pass through for a longer time, and the residence time of the slag in the kiln is increased.

Further, the furnace cylinder body also comprises a gentle section, the gentle section is closer to the furnace tail than the diameter reducing section, and the inner diameter of the gentle section is kept unchanged.

After the slag enters the gentle section from the reducing section, the whole gentle section is cylindrical, the inner diameter is fixed, and the moving speed of the slag after passing through the reducing section tends to be stable.

Furthermore, the inner wall of the kiln body is provided with a lining made of high-temperature resistant materials.

By arranging linings such as refractory bricks on the inner wall, the service life of the rotary kiln can be prolonged, and the energy consumption is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

reference numerals: 1-kiln body, 10-furnace body, 100-reducing section, 110-smooth section, 11-furnace tail and 12-lining.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or structures must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention.

Referring to fig. 1, the utility model provides a rotary kiln with delayed slag discharge, which comprises a kiln body 1, wherein the kiln body 1 comprises a furnace cylinder 10 and a furnace tail 11, and the inner diameter of the furnace cylinder 10 is reduced towards the direction of the furnace tail 11. When the slag moves towards the furnace tail 11 in the furnace cylinder body 10, the inner diameter is reduced, so that the slag needs to pass for a longer time, and the residence time of the slag in the kiln is increased.

Specifically, in the present embodiment, the furnace tube 10 includes a reduced diameter section 100, the cross section of the reduced diameter section 100 is an isosceles trapezoid, and the inner diameter of the reduced diameter section 100 is gradually reduced toward the furnace tail 11. The slag travels a longer path through the reducing section 100 at the ramp formed by the reducing section 100, thereby increasing the residence time in the slag kiln.

The furnace barrel body 10 further comprises a flat section 110, the flat section 110 is closer to the furnace tail 11 than the reducing section 100, and the molten slag enters the flat section 110 after passing through the reducing section 100. The inner diameter of the gentle section 110 is fixed, so that the moving speed of the molten slag can tend to be stable, and the molten slag can flow out of the furnace tail 11 conveniently.

The inner wall of the kiln body 1 is provided with a lining 12 made of a high-temperature resistant material, in this embodiment, a refractory brick. The service life of the rotary kiln can be prolonged by arranging refractory bricks on the inner wall. Meanwhile, due to the reduction of the inner diameter, the material of the refractory brick can be reduced, the cost is saved, the contact area of the residue, the smoke and the refractory brick is reduced, and the service life is prolonged.

The working principle of the rotary kiln capable of delaying slag discharge is as follows: the slag rolls in the circumferential direction in the furnace barrel body 10 and moves towards the furnace tail 11 in the axial direction, and when the slag passes through the reducing section 100, the inner diameter of the reducing section 100 is gradually reduced to form a platform inclined relative to the moving vehicle, so that the moving stroke of the slag is increased. After passing through the reducing section 100, the slag enters the flat section 110, and the speed tends to be stable and flows out of the furnace tail 11.

By using the time-delay slag-tapping rotary kiln, the residence time of the slag in the kiln can be increased, the combustion is more sufficient, the thermal ignition loss rate is reduced, the thickness of the slag layer can be increased, the heat storage of the slag is more, organic matters contained in the slag are combusted in an all-dimensional manner, and the thermal ignition loss rate is further reduced.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The delayed slag-tapping rotary kiln comprises a kiln body and is characterized in that the kiln body comprises a furnace cylinder body and a furnace tail, and the inner diameter of the furnace cylinder body is reduced towards the direction of the furnace tail;

the furnace barrel body comprises a reducing section, and the inner diameter of the reducing section gradually decreases towards the direction of the furnace tail.

2. The time-delay slag-tapping rotary kiln as recited in claim 1, wherein the kiln body further comprises a gentle section, the gentle section is closer to the kiln tail than the reduced-diameter section, and the inner diameter of the gentle section is kept constant.

3. The delayed slag tapping rotary kiln as claimed in claim 1, wherein the inner wall of the kiln body is provided with a lining made of a high temperature resistant material.