CN205228132U - Energy -conserving roller kilns of combustion -supporting wind heating energy storage - Google Patents

Abstract

The utility model relates to a roller kiln, in particular to an energy-saving roller kiln in which combustion-supporting wind heats and stores energy. The roller kiln is preheated and fired with an upper combustion-supporting air duct extending along the kiln body above the refractory and thermal insulation materials on both sides of the kiln body. There is a lower combustion-supporting air box extending along the kiln body of the preheating and firing zone on the outside of the material. The combustion-supporting air pipe is connected; a combustion-supporting main pipe is provided outside the preheating and firing belt kiln body, and the high-pressure combustion-supporting air fan and the combustion-supporting air inlet are connected to the combustion-supporting main pipe. Tube and lower combustion air box. The upper combustion-supporting air pipe and the lower combustion-supporting air box of the utility model are buried in the refractory and heat-insulating material of the kiln body, and the outer wall is provided with an insulation layer, which can not only store energy and reduce the heat loss in the kiln body, but also when the temperature of the combustion-supporting air is higher than that of the wall When the temperature of the refractory material is high, the heat can also be reversely transferred to the kiln, which greatly reduces the energy consumption of the kiln.

Description

An energy-saving roller kiln with combustion-supporting air heating and energy storage

technical field

The utility model relates to a roller kiln, in particular to an energy-saving roller kiln in which combustion-supporting wind heats and stores energy.

Background technique

Roller kiln is a kind of kiln, which is usually used for continuous firing of ceramic products such as ceramic tiles and household porcelain. In the existing roller kiln, it is generally equipped with smoke exhaust, preheating, firing, rapid cooling and slow cooling. In the six zones of the tail cooling zone and the existing preheating and firing zones, some kilns directly use low-temperature air as the combustion-supporting air, and some kilns use cooling waste heat to increase the temperature of the combustion-supporting air, but the combustion-supporting pipes are generally placed outside the kiln , out of the kiln body, although simple insulation is done, due to the long pipeline, the temperature drop of the combustion-supporting air is large during the process of sending it to the burner, which wastes a lot of heat, reduces the thermal efficiency of the product, and increases fuel consumption.

Contents of the invention

In order to solve the above-mentioned technical problems, the utility model provides an energy-saving roller kiln for heating and storing combustion-supporting air, which can not only increase the temperature of combustion-supporting air by utilizing cooling waste heat, but also reduce cooling and heat dissipation losses.

In order to achieve the above object, the utility model adopts the following technical solutions:

The preheating and firing zone of the roller kiln includes a preheating and firing zone kiln body, the inner wall of the preheating and firing zone kiln body is surrounded by heat-insulating refractory materials, and the two sides of the preheating and firing zone kiln body are Above the refractory and thermal insulation material of the wall, there is an upper combustion-supporting air duct extending along the kiln body of the preheating and firing zone; The lower combustion-supporting air box, the upper combustion-supporting air duct and the lower combustion-supporting air box are respectively connected with the upper row of burner combustion-supporting air ducts and the lower row of burner combustion-supporting air ducts of the preheating and firing belt; There is a combustion-supporting main pipe on the outside. The high-pressure combustion-supporting air fan and the combustion-supporting air inlet are connected to the combustion-supporting main pipe. The combustion-supporting main pipe is connected to the upper combustion-supporting air pipe and the lower combustion-supporting air box through multiple combustion-supporting air branch pipes on both sides.

Preferably, the upper combustion-supporting air duct is arranged at the corner of the kiln roof and the upper kiln wall.

Preferably, the upper combustion-supporting air duct is buried in the refractory and heat-insulating material of the wall, and an insulating cotton blanket is provided outside the pipe wall.

Preferably, reinforcing ribs of the lower combustion-supporting air box and air deflectors are arranged relatively at intervals in the lower combustion-supporting air box.

Preferably, the lower combustion-supporting air box is buried in the refractory insulation material at the bottom of the kiln, and an insulation cotton board is provided at the bottom.

Preferably, the plurality of combustion-supporting air branch pipes extend equidistantly along the extension direction of the combustion-supporting main pipe.

Due to the adoption of the above structure, an energy-saving roller kiln with combustion-supporting air heating and energy storage of the utility model sends the waste heat obtained by heating through the circulation heating energy-saving system to the upper combustion-supporting air pipe and the lower combustion-supporting air box through the combustion-supporting main pipe. The air duct and the lower combustion-supporting air box are buried in the refractory insulation material of the kiln body and strengthen its own insulation, so it can not only store energy and reduce the heat loss in the kiln body, but also when the temperature of the combustion-supporting air is higher than the temperature of the wall refractory material It can also reverse heat transfer to the kiln, which greatly reduces the energy consumption of the kiln.

Description of drawings

Fig. 1 is the overall structural representation of the utility model embodiment;

Fig. 2 is the partial structure schematic diagram of the utility model embodiment;

Fig. 3 is a schematic diagram of the split structure of Fig. 2 .

detailed description

Since the utility model mainly solves the structural improvement of the preheating and firing zone, the accompanying drawings and the description mainly revolve around the preheating and firing zone, and the remaining parts are omitted.

As shown in Figures 1-3, the energy-saving roller kiln preheating and firing zone of the energy-saving combustion-supporting air heating energy storage of the embodiment of the utility model includes a preheating and firing belt kiln body 1, and a preheating and firing belt kiln body 1. The inner wall is surrounded by fire-resistant and heat-insulating materials. The above two sides of the preheating and firing zone kiln body 1 are located in the refractory heat-preservation material. There are upper combustion-supporting air ducts 2 extending along the preheating and firing zone kiln body 1. Preheating and burning belt kiln body 1 The refractory insulation material at the bottom of the kiln is provided with a lower combustion-supporting air box 3 extending along the preheating and burning belt kiln body, and the upper combustion-supporting air pipe 2 and the lower combustion-supporting air box 3 are respectively connected with the preheating 1. The combustion-supporting air duct 4 of the upper row of burners in the firing zone is connected with the combustion-supporting air duct 5 of the lower row of burners; a combustion-supporting main pipe 6 is arranged outside the preheating and firing belt kiln body 1, and a high-pressure combustion-supporting air duct is connected to the combustion-supporting main pipe 6. Fan 7, combustion-supporting air inlet 8, and combustion-supporting main pipe 6 communicate with upper combustion-supporting air pipe 2 and lower combustion-supporting air box 3 respectively through a plurality of combustion-supporting air branch pipes 9 on both sides.

In order to facilitate the structural manufacture and transformation of the equipment, in this embodiment, the upper combustion-supporting air duct 2 is arranged at the corner of the kiln roof and the upper kiln wall. After being arranged at the corner, the installation of the upper combustion-supporting air duct 2 does not interfere with the masonry of the kiln roof and the kiln wall, and can be installed and maintained independently.

In order to further reduce the heat loss of the upper combustion-supporting air duct 2 itself, in this embodiment, the upper combustion-supporting air duct 2 is buried in the refractory and heat-insulating material of the wall, and a thermal insulation blanket 10 is provided outside the pipe wall.

Since the lower combustion-supporting air box 3 is located inside the kiln bottom, the kiln bottom of the roller kiln body is generally made of insulating bricks, and the lower combustion-supporting air box 3 needs to carry a certain weight. In order to ensure the structural stability of the lower combustion-supporting air box 3, at the same time The combustion-supporting air is guided to a certain extent so that it can reach various parts of the lower combustion-supporting air box more quickly. In this embodiment, the lower combustion-supporting air box 3 is provided with lower combustion-supporting air box reinforcing ribs and air guides at relative intervals plate 11.

Similarly, in order to reduce the self-heat loss of the lower combustion-supporting air box 3, in this embodiment, the lower combustion-supporting air box 3 is buried in the refractory and heat-insulating material at the bottom of the kiln, and a heat-insulating cotton board 12 is provided at the bottom.

In order to make parameters such as pressure and flow of the combustion-supporting air in each part of the kiln body uniform, in this embodiment, the plurality of combustion-supporting air branch pipes 9 extend equidistantly along the extension direction of the combustion-supporting main pipe 6 .

The above descriptions are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (6)

1. the energy saving roller kiln of a combustion air heating accumulation of energy, comprise preheating, clinkering zone kiln body, preheating, clinkering zone kiln body inwall surrounding is provided with flame-proof thermal insulation material, it is characterized in that: described preheating, be provided with along preheating above the flame-proof thermal insulation material of clinkering zone kiln body both walls, the combustion-supporting airduct in top that clinkering zone kiln body extends, preheating, be provided with along preheating outside flame-proof thermal insulation material bottom clinkering zone kiln body, the bottom combustion air box that clinkering zone kiln body extends, the combustion-supporting airduct in top and bottom combustion air box respectively with preheating, the combustion-supporting airduct of upper row's burner of clinkering zone is communicated with the combustion-supporting airduct of lower row's burner, be provided with combustion-supporting supervisor in preheating, clinkering zone kiln external body, combustion-supporting supervisor be connected with high pressure combustion air blower fan and combustion air entrance, combustion-supporting supervisor is communicated with the combustion-supporting airduct in top and bottom combustion air box respectively by multiple combustion air arms of both sides.

2. the energy saving roller kiln of a kind of combustion air heating accumulation of energy as claimed in claim 1, is characterized in that: the corner of kiln top and top kiln wall is located at by the combustion-supporting airduct in described top.

3. the energy saving roller kiln of a kind of combustion air heating accumulation of energy as claimed in claim 2, is characterized in that: the combustion-supporting airduct in described top buries in body of wall flame-proof thermal insulation material, and tube wall outside is provided with insulation cotton blanket.

4. the energy saving roller kiln of a kind of combustion air heating accumulation of energy as claimed in claim 3, is characterized in that: in described bottom combustion air box, relative spacing is provided with bottom combustion air box reinforcement and wind deflector.

5. the energy saving roller kiln of a kind of combustion air heating accumulation of energy as claimed in claim 4, is characterized in that: described bottom combustion air box buries in flame-proof thermal insulation material at the bottom of kiln, and bottom is provided with heat-preservation cotton plate.

6. the energy saving roller kiln of a kind of combustion air heating accumulation of energy as claimed in claim 5, is characterized in that: described multiple combustion air arms are along the equidistant extension of combustion-supporting supervisor's bearing of trend.