CN111575026A - Novel heat insulation structure of coke oven foundation roof - Google Patents

Abstract

The invention relates to a novel heat insulation structure of a coke oven foundation roof, which comprises an integral casting material layer, a transverse preformed hole and a longitudinal preformed hole; the two sides of the foundation top plate are provided with the edge beams, and the top surface of each edge beam is higher than that of the foundation top plate, so that the top of the foundation top plate forms a groove structure; the integral casting material layer is arranged in the groove structure; the integral casting material layer is provided with at least one layer of transverse preformed holes and at least one layer of longitudinal preformed holes, and the transverse preformed holes and the longitudinal preformed holes are formed by a plurality of preformed holes which are arranged in parallel. The invention adopts a refractory castable layer to replace the traditional refractory brick masonry structure, and forms a protective layer on the basic roof of the coke oven in a pouring mode; in the pouring process, holes are reserved through pre-buried plastic pipes, and the hole structures which are arranged vertically and horizontally can play a good heat insulation role, so that the temperature of the concrete of the foundation top plate is reduced, and the service life of the concrete is prolonged; meanwhile, the temperature of the underground chamber of the coke oven is reduced, and the operating condition of the coke oven is improved.

Description

A new type of thermal insulation structure for coke oven foundation roof

technical field

The invention relates to the technical field of coke oven masonry, in particular to a novel heat insulation structure for a coke oven foundation roof.

Background technique

The structure of modern coke oven is composed of four parts: regenerator, chute, combustion chamber and furnace roof from bottom to top. The coke oven body is made of refractory bricks, and is built on the top plate of the coke oven foundation poured with concrete. In the coking oven coking process, the charged coal is heated to about 1000 ℃ in the carbonization chamber to make coke, the heat required for heating is provided by the combustion of the gas in the combustion chamber, and the heated exhaust gas is drawn out of the coke oven. During the process of exhaust gas entering the chimney through the regenerator, small flue and flue, although its temperature gradually decreases, it still transfers a large amount of heat to the concrete structure such as the foundation roof, flue wall and the surrounding environment, which not only causes waste of energy , but also harm the structures of these concrete structures and reduce their service life.

As shown in Figures 1 and 2, in the traditional coke oven structure, before starting to build the coke oven 1 on the foundation roof 2, usually lay 2-3 layers on the top surface of the foundation roof 2, consisting of floating bead bricks 5 and heat insulating bricks 6. Brick masonry composed of refractory bricks such as clay bricks 7, these brick masonry plays a role in supporting the weight of the entire coke oven 1 above and protecting the foundation roof 2 from being damaged by overheating. In the process of laying these refractory bricks, masonry workers are required to use fire clay for masonry, which is cumbersome and time-consuming to operate; and the price of refractory bricks is relatively high, but the cost performance is not high. In addition, because the bricklaying structure has high requirements on the concrete elevation of the top surface of the foundation roof, if the concrete surface is not smooth, it is necessary to grind and level the concrete surface or process and grind the refractory bricks.

SUMMARY OF THE INVENTION

The invention provides a new type of heat insulation structure for the coke oven foundation roof, which adopts a refractory castable layer to replace the traditional refractory brick masonry structure, and forms a protective layer on the coke oven foundation roof by pouring; Holes are reserved for the buried plastic pipes. These vertically and horizontally arranged hole structures can play a good role in heat insulation, thereby reducing the temperature of the foundation roof concrete and improving its service life; at the same time, the temperature of the basement of the coke oven can be reduced and the operating conditions of the coke oven can be improved.

In order to achieve the above object, the present invention adopts the following technical solutions to realize:

A new type of thermal insulation structure for a coke oven foundation roof, comprising an integral castable layer, lateral reserved holes and longitudinal reserved holes; side beams are arranged on both sides of the foundation roof, and the top surface height of the side beams is higher than that of the foundation roof plate. , so that a groove structure is formed on the top of the base top plate; the integral castable layer is arranged in the groove structure; the integral castable layer is provided with at least one layer of lateral reserved holes and at least one layer of longitudinal reserved holes, and the horizontal The reserved holes and the longitudinal reserved holes are composed of a plurality of reserved holes arranged in parallel.

The transverse reserved holes and the longitudinal reserved holes are both formed by plastic pipes pre-buried in the overall castable layer.

The diameters of the lateral reserved holes and the longitudinal reserved holes are

The top surface of the integral castable layer is provided with a leveling layer.

The longitudinal reserved holes are longitudinally arranged along the foundation top plate, and the transverse reserved holes are arranged transversely along the foundation ceiling.

Compared with the prior art, the beneficial effects of the present invention are:

1) Use refractory castables to cast the thermal insulation protection layer on the top of the foundation roof as a whole, and use refractory castables with easy construction in cold state, high strength in hot state and good thermal insulation properties during specific construction; the overall castable layer has a simple structure , good heat insulation, high thermal strength, can reduce the temperature of the foundation roof, improve the service life of the foundation roof, and save investment;

2) Using the method of pouring construction, the construction is convenient and fast, which can save manpower and improve construction efficiency;

3) A reserved hole structure is set in the overall castable layer, which can reduce the temperature of the foundation roof concrete and improve its service life; at the same time, reduce the temperature of the basement of the coke oven and improve the operating conditions of the coke oven;

4) The requirements for the concrete elevation on the top of the foundation roof are reduced, and the construction is simpler.

Description of drawings

FIG. 1 is a front view of a coke oven foundation top plate thermal insulation structure in the conventional technology.

FIG. 2 is an A-A view in FIG. 1 .

Fig. 3 is a front view of a novel heat insulation structure of a coke oven foundation roof according to the present invention.

FIG. 4 is a B-B view in FIG. 3 .

FIG. 5 is a C-C view in FIG. 3 .

In the picture: 1. Coke oven 2. Foundation roof 3. Edge beam 4. Overall castable layer 5. Bricks 6. Insulation bricks 7. Clay bricks 8. Horizontal reserved holes 9. Longitudinal reserved holes 10. Resistance wall

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

As shown in Fig. 3-Fig. 5, a new type of thermal insulation structure for a coke oven foundation top plate according to the present invention comprises an integral castable layer 4, lateral reserved holes 8 and longitudinal reserved holes 9; Side beam 3, the top surface height of the side beam 3 is higher than the top surface height of the foundation top plate 2, so that the top of the foundation top plate 2 forms a groove structure; the integral castable layer 4 is arranged in the groove structure; the overall The castable layer 4 is provided with at least one layer of transverse reserved holes 8 and at least one layer of longitudinal reserved holes 9, and the transverse reserved holes 8 and the longitudinal reserved holes 9 are composed of a plurality of reserved holes arranged in parallel.

The transverse reserved holes 8 and the longitudinal reserved holes 9 are both formed by plastic pipes pre-buried in the integral castable layer 4 .

The diameters of the lateral reserved holes 8 and the longitudinal reserved holes 9 are:

The top surface of the integral castable layer 4 is provided with a leveling layer.

The longitudinal reserved holes 9 are provided along the longitudinal direction of the foundation top plate 2 , and the transverse reserved holes 8 are provided along the transverse direction of the basic ceiling 2 .

As shown in Figures 3-5, the coke oven 1 is built on the foundation roof 2, and the foundation roof 2 is formed by pouring concrete. Side beams 3 are respectively provided on both sides of the base roof 2 corresponding to the machine side and the coke side of the coke oven 1 , and resistance walls 9 are respectively provided on the outer sides of both ends of the base roof 2 . The thermal insulation structure at the top of the foundation roof 2 is in accordance with the conventional construction method, and a layer of refractory brick insulation layer made of floating bead bricks 5, insulation bricks 6 and clay bricks 7 is arranged on the inside of the side beam 3 to prevent the foundation roof. 2 overheating damage. The refractory brick insulation layer is built with refractory mud, which is time-consuming and labor-intensive, and the economy is not high. In addition, when the refractory bricks are built, the flatness of the bottom is required to be high. If the concrete surface on the top of the foundation roof 2 is not flat, the concrete surface needs to be polished and leveled, or the refractory bricks are processed and polished before the first layer is allowed to be built. Floating bead bricks 5.

The novel thermal insulation structure of the coke oven foundation roof according to the present invention adopts the integral castable layer 4 casted by the refractory castable with thermal insulation effect instead of the refractory brick thermal insulation layer of traditional refractory bricks. Before the furnace 1 is formally built, first pour the heat-resistant castable on the foundation top plate 2 inside the side beam 3, and then level it by plastering the surface to make the top surface meet the tolerance requirements of coke oven masonry.

During the pouring process of the integral castable layer 4, the plastic pipes are buried at equal distances in the longitudinal and transverse directions of the coke oven 1, and the longitudinally buried plastic pipes and the transversely buried plastic pipes are buried in two layers in the height direction. The first layer of plastic pipe is buried and temporarily fixed before pouring. Then, as the pouring progresses, the height of the castable layer exceeds the first layer of plastic pipe, and then the upper layer of plastic pipe is buried.

The plastic pipes embedded in the overall casting layer 4 form a plurality of through-length hole structures. During the production process of the coke oven, these holes communicate with the outside atmosphere, and through continuous air circulation, heat insulation is achieved, thereby effectively reducing the foundation. The temperature of the roof concrete increases its service life; at the same time, it reduces the temperature of the basement of the coke oven and improves the operating conditions of the coke oven.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (5)

1. a new type of thermal insulation structure of coke oven foundation top plate, is characterized in that, comprises integral castable layer, horizontal reserved hole and longitudinal reserved hole; Both sides of foundation top plate are provided with side beams, and the top surface height of side beams is higher than that of side beams. The height of the top surface of the base roof, so that the top of the base roof forms a groove structure; the integral castable layer is provided in the groove structure; the integral castable layer is provided with at least one layer of lateral reserved holes and at least one layer The longitudinal reserved holes, the horizontal reserved holes and the longitudinal reserved holes are composed of a plurality of reserved holes arranged in parallel. 2 . A new type of thermal insulation structure for a coke oven foundation top plate according to claim 1 , wherein the lateral reserved holes and the longitudinal reserved holes are formed by plastic pipes pre-buried in the integral castable layer. 3 . 3. The novel thermal insulation structure of a coke oven foundation top plate according to claim 1 or 2, wherein the diameters of the lateral reserved holes and the longitudinal reserved holes are

4. A new type of thermal insulation structure for a coke oven foundation top plate according to claim 1, wherein a leveling layer is provided on the top surface of the integral castable layer. 5. A new type of thermal insulation structure for a coke oven foundation roof according to claim 1 or 2, characterized in that the longitudinal reserved holes are provided along the longitudinal direction of the foundation roof, and the transverse reserved holes are arranged along the transverse direction of the foundation roof. Overall length setting.

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