CN218864747U - Vertical kiln prevents heat expansion kiln wall - Google Patents

Abstract

The utility model relates to a refractory material technical field, concretely relates to vertical kiln heat-proof bloated kiln wall includes the wall body, the wall body comprises a plurality of walls that set up side by side, wherein the furnace wall includes first wall, the second wall, the third wall, and first wall is close to the vertical kiln inboard, the third wall is close to the vertical kiln outside, the second wall is located between first wall and third wall, and there is the clearance second wall respectively with first wall and third wall, through the structure of constituteing by three wall and clearance with current integral wall replacement, because set up the clearance between three wall, make it when thermal expansion, there is sufficient space release stress, reduce the whole probability that appears warping of kiln.

Description

Vertical kiln prevents heat expansion kiln wall

Technical Field

The utility model relates to a refractory material technical field, concretely relates to vertical kiln heat expansion prevention kiln wall.

Background

The shaft kiln is also called as a vertical kiln, coal is used as fuel in the conventional vertical kiln, the conventional vertical kiln is required to be environment-friendly, most vertical kilns are replaced by natural gas as fuel, as shown in figure 2, the conventional kiln mostly uses integral wall surfaces, the adjacent wall surfaces are connected through a filling agent, after the coal is changed into the natural gas as the fuel, in order to improve the heat preservation effect, the whole thickness of the wall surface is increased, the wall surface is thickened, the expansion coefficient is also increased, and the problems of kiln wall deformation, fire running, air leakage and the like are easy to occur in long-time use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to above problem, provide a vertical kiln heat expansion prevention kiln wall.

The technical scheme who adopts is, a vertical kiln heat expansion prevention kiln wall includes the wall body, and the wall body comprises a plurality of wall that set up side by side, and wherein the wall includes first wall, second wall, third wall, and first wall is close to the vertical kiln inboard, and the third wall is close to the vertical kiln outside, and the second wall is located between first wall and third wall, and there is the clearance second wall respectively with first wall and third wall.

Optionally, a first gap exists between the second wall and the first wall, a second gap exists between the second wall and the third wall, the first gaps in the left and right adjacent wall surfaces are communicated with each other, and the second gaps in the left and right adjacent wall surfaces are also communicated with each other.

Optionally, the first gap and the second gap are arranged in a staggered manner in the upper and lower adjacent wall surfaces.

Furthermore, the wall body comprises a first wall surface and a second wall surface, the first wall surface, the second wall surface and the third wall surface in the first wall surface are the same in size, the first wall surface and the third wall surface in the second wall surface are the same in size, and the second wall surface is smaller than the first wall surface and the third wall surface in size.

Optionally, the vertical projection of the first gap in the first wall surface is located outside the vertical projection of the first gap in the second wall surface, and the vertical projection of the second gap in the first wall surface is located outside the vertical projection of the second gap in the second wall surface.

Optionally, the thickness of the wall is 1.5m, and the widths of the first gap and the second gap are 15cm.

The utility model has the advantages that at least one of the following advantages is included;

1. the existing integral wall surface is replaced by a structure consisting of three wall surfaces and gaps, and the gaps are formed among the three wall surfaces, so that when the wall surface is heated to expand, enough space is provided for releasing stress, and the probability of deformation of the whole kiln is reduced.

2. Meanwhile, the specific heat capacity of the air is higher than that of the bricks, so that the bricks can absorb more heat, and the heat preservation effect is increased to a certain extent.

3. The first gap and the second gap in the upper wall surface and the lower wall surface are arranged in a staggered mode and are not communicated with each other, so that the kiln walls still keep an integral connection relationship.

Drawings

FIG. 1 is a schematic view of a vertical kiln;

FIG. 2 is a schematic view of a conventional wall structure;

FIG. 3 is a schematic structural view of a heat expansion resistant kiln wall;

FIG. 4 is a schematic view of another heat expansion proof kiln wall structure;

FIG. 5 is a schematic view of the structure of the lower layer of the wall of the thermal expansion prevention kiln;

labeled as: 1 is a furnace body, 2 is a cooling zone, 3 is a high-temperature zone, 4 is a preheating zone, 5 is a combustion surface, 12 is a wall surface, 13 is a first wall, 14 is a second wall, 15 is a third wall, 16 is a first gap, and 17 is a second gap.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 3 to 5, the heat expansion prevention wall for the vertical kiln comprises a wall body, wherein the wall body is composed of a plurality of wall surfaces 12 arranged side by side, the wall surfaces 12 comprise a first wall surface 13, a second wall surface 14 and a third wall surface 15, the first wall surface 13 is close to the inner side of the vertical kiln, the third wall surface 15 is close to the outer side of the vertical kiln, the second wall surface 14 is located between the first wall surface 13 and the third wall surface 15, and gaps exist between the second wall surface 14 and the first wall surface 13 and between the second wall surface 14 and the third wall surface 15.

The aim at of design like this, replace to the structure of constituteing by three face wall and clearance through will having integral wall now, because set up the clearance between three face wall, make it when the thermal expansion, there is sufficient space release stress, reduce the whole probability that appears of kiln, solved current kiln wall body in order to improve the heat preservation effect, the whole thickness of wall increases, the wall bodiness, the expansion coefficient also increases, kiln wall deformation easily appears in long-time the use, run out fire, run out gas and run out wind scheduling problem, the specific heat capacity of air is higher than the specific heat capacity of brick, make it can absorb more heat, thereby the heat preservation effect has been increased to a certain extent.

Meanwhile, a first gap 16 exists between the second wall 14 and the first wall 13, a second gap 17 exists between the second wall 14 and the third wall 15, the first gaps 16 in the left and right adjacent wall surfaces 12 are communicated with each other, the second gaps 17 in the left and right adjacent wall surfaces 12 are also communicated with each other, and the first gaps 16 and the second gaps 17 in the upper and lower adjacent wall surfaces 12 are arranged in a staggered mode.

The first gap and the second gap in the upper wall surface and the lower wall surface are arranged in a staggered mode and are not communicated with each other, so that the kiln walls still keep an integral connection relation.

The specific staggered arrangement mode is as shown in fig. 5, the wall body comprises a first type of wall surface and a second type of wall surface, wherein fig. 3 shows that the sizes of a first wall 13, a second wall 14 and a third wall 15 in the first type of wall surface are the same, fig. 4 shows that the sizes of the first wall 13 and the third wall 15 in the second type of wall surface are the same, the size of the second wall 14 is smaller than the sizes of the first wall 13 and the third wall 15, the vertical projection of a first gap 16 in the first type of wall surface is positioned outside the vertical projection of a first gap 16 in the second type of wall surface, and the vertical projection of a second gap 17 in the first type of wall surface is positioned outside the vertical projection of a second gap 17 in the second type of wall surface.

When the first wall, which is close to the inside of the shaft furnace, expands when heated, the first gap provides ample space for its expansion, followed by the expansion of the second wall when heated, and finally by the third wall, which, in the shaft furnaces used by the applicant at present, is between 10 and 20cm, and usually 15cm.

Meanwhile, it should be noted that, in normal use, the filling agent is required to fill and connect the wall surfaces, which is omitted in this embodiment, and is not used, but only the gap formed after filling and connecting is 10-20cm.

Furthermore, as shown in fig. 1, this embodiment further provides a vertical kiln using a heat expansion-proof kiln wall, which includes a furnace body 1, the furnace body 1 is provided with a preheating zone 4, a high-temperature zone 3 and a cooling zone 2 from top to bottom, the high-temperature zone 3 and the cooling zone 2 are in a circular truncated cone structure, the upper part of the circular truncated cone structure is a small head end, the lower part of the circular truncated cone structure is a big head end, the preheating zone 4 is in a circular truncated cone structure, the upper part of the preheating zone 4 is a big head end, the lower part of the preheating zone 4 is a small head end, the lower part of the preheating zone 4 is communicated with the upper part of the high-temperature zone 3, the lower part of the preheating zone 4 is further provided with a combustion surface 5, the combustion surface 5 is in a circular truncated cone structure, and the lower part of the combustion surface 5 is a small head end and is communicated with the upper part of the high-temperature zone 3.

The vertical kiln which is in the shape of a chimney and is small in upper part and large in lower part is adjusted to be composed of two circular truncated cones, wherein the circular truncated cones are arranged above one another in an inverted mode, namely the existing preheating zone is inverted, the size is increased to a certain extent, so that material storage can be increased, the staying time of the preheating zone is prolonged, the furnace can be fully preheated, and heat consumption is reduced to a certain extent. Meanwhile, along with the increase of the retention time of the stock in the preheating zone, the stock is not easy to crack due to the preheating of sufficient time, the shape of the stock is not easy to damage, and natural water, structural water and crystal water in the stock are easier to discharge along with the increase of the preheating time, so that water vapor is not easy to generate when the stock enters the high-temperature zone, and the high-temperature zone can be protected from having higher temperature.

The temperature at the combustion surface is near 1450 ℃, the baited stones do not agglomerate at the temperature, the temperature of the preheating zone is gradually reduced upwards, and the temperature is near 100 ℃ when the temperature reaches the inlet at the top of the preheating zone.

Through the comparison statistics, the existing vertical kiln stores material dwell time in the preheating zone is 20h, because the embodiment structurally improves, the direct is increased, and the structure of the inverted round table is adopted, so that the store material can stay in the preheating zone for as long as 70h, and the preheating effect is fully improved along with the increase of time.

It should be noted that, the combustion surface in this embodiment is not the actual combustion position, but is located above the combustion position, and this area is high in temperature, and meanwhile, a circular truncated cone structure is adopted, and the lower portion of the combustion surface is a small end and is communicated with the upper portion of the high temperature zone, so that the size of the port of the preheating zone entering the high temperature zone is further reduced, and heat accumulation occurs in this area, and the temperature is raised and is not easily lost.

In the embodiment, the natural gas is mainly introduced into the furnace body to improve combustion and the cooling zone gas close to the high-temperature zone is introduced into the joint of the high-temperature zone and the preheating zone, so that the overall temperature distribution of the high-temperature zone is uniform, and heat utilization is realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a vertical kiln heat expansion prevention kiln wall, includes the wall body, the wall body comprises a plurality of wall (12) that set up side by side, its characterized in that: wall (12) include first wall (13), second wall (14), third wall (15), and first wall (13) are close to the vertical kiln inboard, third wall (15) are close to the vertical kiln outside, second wall (14) are located between first wall (13) and third wall (15), and second wall (14) have the clearance with first wall (13) and third wall (15) respectively.

2. The vertical kiln heat expansion prevention kiln wall as recited in claim 1, wherein: a first gap (16) exists between the second wall (14) and the first wall (13), a second gap (17) exists between the second wall (14) and the third wall (15), the first gaps (16) in the left adjacent wall surface and the right adjacent wall surface (12) are communicated with each other, and the second gaps (17) in the left adjacent wall surface and the right adjacent wall surface (12) are also communicated with each other.

3. The vertical kiln heat expansion prevention kiln wall as claimed in claim 2, characterized in that: the first gap (16) and the second gap (17) are arranged in a staggered manner in the upper wall surface and the lower wall surface (12) which are adjacent.

4. The heat expansion preventing kiln wall of the vertical kiln as claimed in claim 3, characterized in that: the wall body comprises a first wall surface and a second wall surface, the first wall surface (13), the second wall surface (14) and the third wall surface (15) in the first wall surface are the same in size, the first wall surface (13) and the third wall surface (15) in the second wall surface are the same in size, and the second wall surface (14) is smaller than the first wall surface (13) and the third wall surface (15) in size.

5. The vertical kiln heat expansion prevention kiln wall as claimed in claim 4, wherein: the vertical projection of the first gap (16) in the first wall surface is positioned outside the vertical projection of the first gap (16) in the second wall surface, and the vertical projection of the second gap (17) in the first wall surface is positioned outside the vertical projection of the second gap (17) in the second wall surface.

6. The vertical kiln heat expansion prevention kiln wall of claim 5, wherein: the thickness of the wall body is 1.5m, and the widths of the first gap (16) and the second gap (17) are 15cm.

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