阅读说明：本技术 一种全氧燃烧玻璃窑炉大碹保温结构 (Big arch insulation construction of oxy-fuel combustion glass kiln ) 是由 张文斌 仝小飞 张军 赵龙旭 杨波 于 2020-05-01 设计创作，主要内容包括：一种全氧燃烧玻璃窑炉大碹保温结构,包括大碹砖,所述的大碹砖表面铺设全氧燃烧电熔大碹保温层,所述的全氧燃烧电熔大碹保温层依次包括锆质密封料、硬质烧结耐火材料、轻质保温砖和可塑保温涂料,大碹砖两侧为碹碴砖,所述的全氧燃烧电熔大碹保温层边部和碹碴砖接触部位设置收边结构。本发明结构合理稳固,能够增强保温效果,可以加强碹碴砖的散热,提高窑炉安全系数。(A big arch heat preservation structure of a total oxygen combustion glass kiln comprises a big arch brick, wherein a total oxygen combustion electric melting big arch heat preservation layer is laid on the surface of the big arch brick, the total oxygen combustion electric melting big arch heat preservation layer sequentially comprises zirconium sealing materials, hard sintering refractory materials, light heat preservation bricks and plastic heat preservation coatings, arch slag bricks are arranged on two sides of the big arch brick, and a side folding structure is arranged at the contact position of the edge of the total oxygen combustion electric melting big arch heat preservation layer and the arch slag bricks. The invention has reasonable and stable structure, can enhance the heat preservation effect, can strengthen the heat dissipation of arch slag bricks and improve the safety factor of the kiln.)

1. The large arch heat preservation structure of the total oxygen combustion glass kiln is characterized by comprising a large arch brick (2), wherein a total oxygen combustion electric melting large arch heat preservation layer is paved on the surface of the large arch brick (2), the total oxygen combustion electric melting large arch heat preservation layer sequentially comprises zirconium sealing materials, hard sintering refractory materials, light heat preservation bricks and plastic heat preservation coatings, arch slag bricks (1) are arranged on two sides of the large arch brick (2), and a trimming structure (3) is arranged at the contact position of the edge of the total oxygen combustion electric melting large arch heat preservation layer and the arch slag bricks (1).

2. The crown heat insulation structure of the oxy-fuel combustion glass furnace as claimed in claim 1, wherein the thickness of the zirconium sealant is 30-50 mm.

3. The crown insulation structure of a oxy-fuel combustion glass furnace as claimed in claim 1, wherein the hard sintered refractory material is selected from a primary standard high alumina brick or a mullite brick with a thickness of 65 mm.

4. The crown insulation structure of the oxy-fuel combustion glass furnace as claimed in claim 1, wherein the lightweight insulation brick is a standard lightweight mullite brick with 2-4 layers.

5. The crown heat insulation structure of the oxy-fuel combustion glass furnace as claimed in claim 1, wherein the thickness of the plastic heat insulation coating is 50-150 mm.

6. The crown heat preservation structure of the oxy-fuel combustion glass furnace as claimed in claim 1, wherein the edge-closing structure (3) is made of hard sintered refractory materials which are vertically arranged, staggered with each other, and contracted inwards layer by layer.

Technical Field

The invention relates to the technical field of glass kilns, in particular to a crown heat insulation structure of a total oxygen combustion glass kiln.

Background

The main arch of the total oxygen combustion glass kiln is built by using an electric melting material, oxygen is used for supporting combustion, fuel is fully combusted, the flame blackness is high, the radiation capability is strong, and the temperature in the kiln is obviously improved. The density of the electric melting material is high, particularly the stress of the arch slag bricks is large, and arch slag cooling wind is arranged in the total oxygen combustion kiln to carry out forced cooling on arch feet. Compared with the silicon brick main arch, the electric melting main arch has high heat conductivity coefficient, and the heat preservation effect of the main arch is enhanced, so that the heat dissipation of the main arch is reduced, and the safety of the main arch structure is ensured. At present, the heat-insulating layer of the main arch for total oxygen combustion is basically formed by light heat-insulating bricks, creep and burning loss are easy to occur, a short wall is generally built on arch slag bricks by using sintering materials at the edge part as a supporting point of the heat-insulating layer, the vertical short wall structure is easy to deform, the load of the main arch is increased, the short wall wraps the arch slag bricks, the heat dissipation of the arch slag bricks is not facilitated, and certain potential hazards are caused to the safety of a kiln.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a heat insulation structure of a main arch of a total oxygen combustion glass kiln, which has a reasonable and stable structure, can enhance the heat insulation effect, can strengthen the heat dissipation of arch slag bricks and improve the safety coefficient of the kiln.

In order to achieve the purpose, the invention adopts the technical scheme that:

a big arch heat preservation structure of a total oxygen combustion glass kiln comprises a big arch brick 2, a total oxygen combustion electric melting big arch heat preservation layer is laid on the surface of the big arch brick 2 and sequentially comprises zirconium sealing materials, hard sintering refractory materials, light heat preservation bricks and plastic heat preservation paint, arch slag bricks 1 are arranged on two sides of the big arch brick 2, and a side folding structure 3 is arranged at the contact position of the edge of the total oxygen combustion electric melting big arch heat preservation layer and the arch slag bricks 1.

The thickness of the zirconium sealing material is 30-50 mm.

The hard sintered refractory material is a first-grade high-alumina standard brick or a mullite standard brick with the thickness of 65 mm.

The light heat-insulating brick is a light mullite standard brick with 2-4 layers.

The thickness of the plastic heat-insulating coating is 50-150 mm.

The edge closing structure 3 is composed of hard sintered refractory materials which are vertically placed, staggered mutually and contracted inwards layer by layer.

The invention has the beneficial effects that:

through the selection of the material of the heat-insulating layer of the main arch of the total-oxygen combustion glass kiln and the resetting of the arrangement of the heat-insulating layer, the heat-insulating effect of the kiln can be improved, the heat loss is reduced, the burning loss of the light heat-insulating layer can be prevented, and the hot repair operation in the later stage of the kiln is reduced. The 1 st layer of the main arch heat-insulating layer is made of zirconium sealing materials, so that the whole sealing effect can be achieved, the 2 nd layer is made of hard sintered refractory materials, the heat insulation effect is achieved, and the main arch fire caused by creep deformation of the upper layer light refractory materials is prevented. Light mullite standard bricks are used on the 3 rd layer to the 5 th layer, so that the heat insulation effect is further enhanced, and the plastic heat insulation coating is selected on the uppermost layer, so that the outer layer sealing and molding operation is realized. The edge-receiving structure is arranged at the contact position of the edge part of the heat-insulating layer and the arch slag bricks, the arch slag bricks are exposed in the air, the heat dissipation of the arch slag bricks can be enhanced, and the safety coefficient of the oxy-fuel combustion electric melting main arch is increased. The whole heat preservation configuration is matched with the oxy-fuel combustion kiln, the structure is reasonable and stable, the safety and the economy are both considered, and the advancement of the oxy-fuel combustion technology is highlighted.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the edge folding structure 3 of the present invention.

FIG. 3 is a schematic structural view of an insulating layer of a total oxygen combustion electrocast arch.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, fig. 2, fig. 3: a large arch heat-insulating structure suitable for a total oxygen combustion glass kiln comprises selection and distribution of large arch heat-insulating materials and structural arrangement of a large arch heat-insulating layer.

Selecting the material and distribution of the main arch.

The main arch of the oxy-fuel combustion kiln is made of an electric melting material, the heat conduction coefficient is greatly increased compared with that of the silica brick main arch, heat insulation is enhanced relative to the silica brick main arch, heat loss of the main arch is reduced, and the creep resistance of an insulating layer is improved by adding a hard sintered refractory material. As shown in figure 1, the total oxygen combustion electric melting main arch heat preservation layer is laid on the main arch brick 2, and 5-7 layers, preferably 6 layers, are arranged. The layer 1 is a zirconium sealing material, and is formed into a whole after high-temperature sintering, so that the whole sealing effect is achieved, and the thickness is selected to be 30-50 mm, preferably 30 mm; the 2 nd layer is made of hard sintered refractory materials, so that the effect of isolating heat is achieved, because the 2 nd layer is wrapped in the upper layer of heat insulation materials, if light heat insulation bricks are used, creep deformation can occur quickly to cause a crown to fire, and the hard refractory materials can be first-grade high-alumina standard bricks or mullite standard bricks with the thickness of 65 mm; 2-4 layers of light heat-insulating bricks can be selected above the 3 rd layer, and 3 layers of light mullite standard bricks with the thickness of 65mm are preferably selected to further play a heat-insulating role; the topmost layer chooses for use plastic heat preservation coating, plays the outer sealed effect of moulding, and 50 ~ 150mm, preferred 100mm are selected to thickness. It should be noted that the temperature of the inner and outer surfaces of each insulating layer is calculated by checking when the thickness of the insulating layer is set, the temperature cannot exceed the refractoriness under load of the selected material, and the load of the arch per unit area is considered by checking.

And selecting a main arch insulating layer edge-closing structure.

As shown in figure 1, the edge-closing structure 3 is arranged at the contact position of the edge of the heat-insulating layer and the arch slag brick 1 and is used as a supporting point of the heat-insulating layer, the edge-closing structure 3 is made of hard sintered refractory materials which are vertically arranged, staggered mutually, and contracted inwards layer by layer, and the edge-closing brick is tightly pressed on the arch slag brick 1 by utilizing the gravity action of the heat-insulating layer, so that the building is convenient, and the structure is stable. The arch ballast bricks 1 can be exposed in the air, the heat dissipation of the arch ballast bricks is enhanced, and the safety factor of the oxy-fuel combustion electric melting main arch is increased.

The edge-receiving structure 3 is arranged at the contact position of the edge part of the heat-insulating layer and the arch ballast bricks, and the arch ballast bricks are exposed in the air, so that the heat dissipation of the arch ballast bricks can be enhanced, and the safety coefficient of the oxy-fuel combustion electric melting main arch is increased. The whole heat preservation configuration and oxy-fuel combustion kiln phase-match, it is rational in infrastructure firm, can improve kiln heat preservation effect, reduce calorific loss, can prevent that the light heat preservation from scaling down, reduce the hot repair operation in kiln later stage, security and economic nature compromise, have highlighted the advance of oxy-fuel combustion technique.