CN217004523U

CN217004523U - Air-cooled furnace wall structure for hot-blast stove

Info

Publication number: CN217004523U
Application number: CN202220383507.XU
Authority: CN
Inventors: 肖阳
Original assignee: Fujian Zhongmin Lvkang Environmental Protection Equipment Co ltd
Current assignee: Fujian Zhongmin Lvkang Environmental Protection Equipment Co ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-07-19
Anticipated expiration: 2032-02-24

Abstract

The utility model relates to an air-cooled furnace wall structure for a hot-blast furnace, which comprises an outer plate, a cold air channel, an inner plate, an inner heat-insulating layer and a fire-resistant layer which are sequentially arranged from outside to inside, wherein the cold air channel is provided with an air inlet and an air outlet, the air outlet is communicated with an air chamber of the hot-blast furnace, the outer side of the outer plate is sequentially provided with an outer heat-insulating layer and a decorative plate, and the thicknesses of the inner heat-insulating layer and the outer heat-insulating layer are 20-100 mm. The waste of heat in the hot blast stove is greatly reduced, the utilization rate of heat energy is improved, energy conservation and environmental protection are facilitated, and the production cost is reduced.

Description

Air-cooled furnace wall structure for hot-blast furnace

Technical Field

The utility model relates to the technical field of air cooling of hot blast stoves, in particular to an air-cooled furnace wall structure for a hot blast stove.

Background

When cooling air of the air-cooled hot blast stove directly circulates in a cooling air duct, the transverse distribution is easy to generate uneven due to the fact that the cooling air flows too fast, so that the cooling of a hearth and a heat insulation shell is uneven, further, local areas of the hearth are easy to overheat, the thermal stress is too large, and the service life of the hot blast stove is shortened; the local overheat of thermal-insulated casing leads to the hot-blast furnace heat loss big, the extravagant energy, and simultaneously, the hot-blast furnace generally is equipped with the wind channel, like the hot-blast furnace that patent application number 201620577434.2 disclosed, the wind in wind channel is cold wind, can neutralize the temperature in the hot-blast furnace intracavity, influences heat production efficiency.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above problems, the present invention proposes an air-cooled furnace wall structure for a hot blast stove.

In order to achieve the purpose, the utility model adopts the following technical scheme: the air-cooled furnace wall structure for the hot blast furnace comprises an outer plate, a cold air channel, an inner plate, an inner heat-insulating layer and a fire-resistant layer which are sequentially arranged from outside to inside, wherein the cold air channel is provided with an air inlet and an air outlet, the air outlet is communicated with an air chamber of the hot blast furnace, an outer heat-insulating layer and a decorative plate are sequentially arranged on the outer side of the outer plate, and the thicknesses of the inner heat-insulating layer and the outer heat-insulating layer are 20-100 mm.

Further improve, the inner panel is equipped with multiunit radiator unit from top to bottom in proper order towards one side of cold wind passageway, radiator unit includes first heating panel and the second heating panel that sets up along oven length direction interval, the structure size of first heating panel and second heating panel is unanimous, is the arc, and it includes concave surface and convex surface, and the concave surface of first heating panel and second heating panel in the same group radiator unit sets up in opposite directions, just the second heating panel is located about between two adjacent first heating panels directly over.

In a further improvement, the distance between the two left and right adjacent first heat dissipation plates is 1/8-6/8 of the width of the arc-shaped plate.

In a further improvement, the vertical spacing between the first heat dissipation plate and the second heat dissipation plate is equal to the height of the arc-shaped plate.

In a further improvement, the arc-shaped plate is provided with a plurality of through holes at intervals.

The inner plate is further improved, and an outer oxidation resistant layer, an outer corrosion resistant layer, an outer rust resistant layer, a base material layer, an inner rust resistant layer, an inner corrosion resistant layer and an inner oxidation resistant layer are sequentially arranged from outside to inside.

In a further improvement, the outer plate structure is identical to the inner plate structure.

By adopting the technical scheme, the utility model has the beneficial effects that: according to the utility model, the cold air channel is arranged in the furnace wall, and the outer heat-insulating layer and the decorative plate are arranged on the outer side of the furnace wall, so that the heat loss of the hot blast furnace can be effectively avoided while the aesthetic property of the hot blast furnace is improved; furthermore, the heat dissipation assembly is arranged in the cold air channel, so that the heat dissipation cooling area in the cold air channel is increased, and meanwhile, the first heat dissipation plate and the second heat dissipation plate are both arc-shaped plates, so that the turbulence effect on the cold air in the channel can be achieved, the cold air can be uniformly dispersed to the whole channel, and local overheating is avoided; further, through the inner plate and the outer plate structure, the outer oxidation-resistant layer and the oxidation-resistant layer can prevent the furnace wall from being oxidized and corroded, so that the corrosion resistance of the furnace wall is effectively improved, the outer corrosion-resistant layer and the inner corrosion-resistant layer can prevent the furnace wall from being corroded by acidic and basic substances and damaged, so that the corrosion resistance of the furnace wall is effectively improved, the outer rust-resistant layer and the inner rust-resistant layer can prevent the substrate layer from being oxidized at an accelerated speed due to the fact that the furnace wall is heated, and the service life of the furnace wall is effectively prolonged.

Drawings

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

FIG. 2 is a schematic structural view of the inner panel of the present invention;

FIG. 3 is a schematic structural diagram of a heat dissipation assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the first and second heat dissipation plates according to the embodiment of the present invention.

Icon:

1. a decorative plate; 2. an outer insulating layer; 3. an outer plate; 4. a cold air channel; 5. an inner plate; 6. an inner insulating layer; 7. a refractory layer; 101. an outer oxidation resistant layer; 102. an outer corrosion-resistant layer; 103. an outer anti-rust layer; 104. a substrate layer; 105. an inner anti-rust layer; 106. an inner corrosion-resistant layer; 107. an internal oxidation resistant layer; 81. a first heat dissipation plate; 82. a second heat dissipation plate; 801. and a through hole.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 4, the present embodiment provides an air-cooled furnace wall structure for a hot-blast furnace, including a decorative plate 1, an outer insulating layer 2, an outer plate 3, a cold air channel 4, an inner plate 5, an inner insulating layer 6 and a fire-resistant layer 7, which are sequentially arranged from outside to inside, wherein an air inlet is arranged at a lower end of the cold air channel 4, an air outlet is arranged at an upper end of the cold air channel 4, the air outlet is communicated with an air chamber of the hot-blast furnace, the inner insulating layer 6 and the outer insulating layer 2 are both cotton felts, the thickness of the inner insulating layer 6 and the outer insulating layer 2 is 40mm, the inner plate 5 is sequentially provided with an outer oxidation-resistant layer 101, an outer corrosion-resistant layer 102, an outer rust-resistant layer 103, a base material layer 104, an inner rust-resistant layer 105, an inner corrosion-resistant layer 106 and an inner oxidation-resistant layer 107, wherein the inner oxidation-resistant layer 107 and the outer oxidation-resistant layer 101 are preferably tungsten-cobalt alloy plating layers, the inner corrosion-resistant layer 106 and the outer corrosion-resistant layer 102 are preferably zinc plating layers, and the inner rust-resistant layer 105, The outer anti-rust layer 103 is preferably a nickel-phosphorus alloy coating, and the structure of the outer plate 3 is consistent with that of the inner plate 5.

In practical application, the thickness of the inner heat-insulating layer 6 and the outer heat-insulating layer 2 can be any value between 20 mm and 100mm, preferably 30 mm to 50mm, and when the thickness is in the interval, the good heat-insulating effect is achieved, and simultaneously, when the hot blast stove is stopped, the temperature of the stove wall can be rapidly reduced.

In this embodiment, a plurality of sets of heat dissipation assemblies are sequentially disposed from top to bottom on a side of the inner plate 5 facing the cold air channel 4, each heat dissipation assembly includes a first heat dissipation plate 81 and a second heat dissipation plate 82 disposed at an interval along the length direction of the furnace wall, the first heat dissipation plate 81 and the second heat dissipation plate 82 have the same structural size, are both arc-shaped plates, and include a concave surface and a convex surface, the concave surfaces of the first heat dissipation plate 81 and the second heat dissipation plate 82 in the same set of heat dissipation assemblies are disposed opposite to each other, and the second heat dissipation plate 82 is disposed right above the two adjacent left and right first heat dissipation plates 81, wherein, to achieve an optimal flow disturbance effect, the distance between the two adjacent left and right first heat dissipation plates 81 is the arc-shaped plate width 1/4, the vertical distance between the first heat dissipation plates and the second heat dissipation plates 82 is equal to the height of the arc-shaped plates, and, meanwhile, in order to rapidly and evenly disperse the cold air to the whole cold air channel 4, the arc-shaped plate is provided with a plurality of through holes 801 at intervals.

In practical applications, the distance between two adjacent left and right first heat dissipation plates 81 may also be 1/8-6/8 of the width of the arc-shaped plate.

According to the utility model, the cold air channel 4 is arranged in the furnace wall, and the outer heat-insulating layer 2 and the decorative plate 1 are arranged on the outer side of the furnace wall, so that the attractiveness of the hot air furnace is improved, and simultaneously, the heat loss of the hot air furnace can be effectively avoided, and moreover, the air outlet of the cold air channel 4 is communicated with the air duct of the hot air furnace, so that the cold air heated in the cold air channel 4 returns to the furnace chamber through the air duct, the waste of heat in the hot air furnace is greatly reduced, the utilization rate of heat energy is improved, the energy conservation and environmental protection are facilitated, and the production cost is reduced; further, through set up radiator unit in cold wind passageway 4, increased the heat dissipation cooling area in the cold wind passageway 4, simultaneously, first heating panel 81 and second heating panel 82 are the arc, can play the vortex effect to the cold wind in the passageway, make cold wind can the homodisperse to whole passageway, avoid local overheat.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides an air-cooled oven wall structure for hot-blast furnace, includes planking, cold wind passageway, inner panel, interior heat preservation and the flame retardant coating that sets gradually by outer to interior, the cold wind passageway is equipped with air intake and air outlet, its characterized in that: the air outlet is communicated with an air chamber of the hot blast stove, an outer heat insulation layer and a decorative plate are sequentially arranged on the outer side of the outer plate, and the thickness of the inner heat insulation layer and the thickness of the outer heat insulation layer are 20-100 mm.

2. An air-cooled furnace wall construction for a hot blast stove according to claim 1, characterised in that: the inner panel is equipped with multiunit radiator unit from top to bottom in proper order towards one side of cold wind passageway, radiator unit includes first heating panel and the second heating panel that sets up along oven length direction interval, the structure size of first heating panel and second heating panel is unanimous, is the arc, and it includes concave surface and convex surface, and the concave surface of first heating panel and second heating panel in the same group radiator unit sets up in opposite directions, just the second heating panel is located about between two adjacent first heating panels.

3. An air-cooled furnace wall construction for a hot blast stove according to claim 2, characterised in that: the distance between the two adjacent first heat dissipation plates at the left and the right is 1/8-6/8 of the width of the arc-shaped plate.

4. An air-cooled wall construction for a hot blast stove according to claim 3, characterised in that: the vertical distance between the first heat dissipation plate and the second heat dissipation plate is equal to the height of the arc-shaped plate.

5. An air-cooled furnace wall construction for a hot blast stove according to claim 2, characterised in that: the arc-shaped plate is provided with a plurality of through holes at intervals.

6. An air-cooled furnace wall construction for a hot blast stove according to claim 2, characterised in that: the inner plate is sequentially provided with an outer oxidation resistant layer, an outer corrosion resistant layer, an outer rust resistant layer, a base material layer, an inner rust resistant layer, an inner corrosion resistant layer and an inner oxidation resistant layer from outside to inside.

7. An air-cooled furnace wall construction for a hot blast stove according to claim 6, characterised in that: the outer plate structure is consistent with the inner plate structure.