CN205878909U - Flash stove reaction tower - Google Patents

Abstract

The utility model discloses a flash furnace reaction tower, which comprises: a shell; a refractory material piece laid on the inner side wall of the shell; a plurality of cooling pieces arranged on the shell and along the The shell is arranged at intervals in the axial direction. In the thickness direction of the shell, one end of each cooling element is connected to the outer wall of the shell, and the other end of each cooling element extends into the refractory material to cool the refractory material. At least a portion of the channel of the cooling element is offset toward the inner end of the refractory element relative to the middle of the sidewall of the refractory element. According to the flash furnace reaction tower of the utility model, the temperature of the refractory material parts close to the reaction furnace chamber can be rapidly cooled, the temperature uniformity of the refractory material parts in the shell can be ensured, and different regions of the refractory material parts are avoided due to large temperature differences. Damage occurs, thereby prolonging the service life of refractory parts.

Description

Flash furnace reaction tower

technical field

The utility model relates to the technical field of metallurgical equipment, in particular to a flash furnace reaction tower.

Background technique

The multiple copper water jackets of the flash furnace reaction tower in the related art are arranged at equal intervals, and the distance between two adjacent copper water jackets is relatively large. This structure can adapt to the early smelting process. However, with the increase in production scale Expanding, the heat load intensity of the inner volume of the reaction tower is getting higher and higher, and this arrangement can no longer meet the production requirements.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

Therefore, the utility model proposes a flash furnace reaction tower. The flash furnace reaction tower has a simple structure, reliable connection of various parts, convenient assembly and disassembly, long service life, and can meet actual production requirements.

The flash furnace reaction tower according to the utility model comprises: a shell, the shell is formed into a column; a refractory material piece, the refractory material piece is laid on the inner side wall of the shell; a plurality of cooling elements, a plurality of The cooling elements are arranged on the casing and arranged at intervals along the axial direction of the casing. In the thickness direction of the casing, one end of each cooling element is connected to the outer side wall of the casing. The other end of each of the cooling parts extends into the refractory material part to cool the refractory material part, and at least a part of the channel of the cooling part is directed toward the center of the side wall of the refractory material part. The inner ends of the refractory pieces are offset.

According to the flash furnace reaction tower of the present utility model, a plurality of cooling elements arranged at intervals along the axial direction of the casing are arranged in the refractory material in the shell, and at least a part of the channel of the cooling element is relatively to the refractory material The middle part of the side wall is biased towards the inner side of the refractory material, which can quickly cool down the refractory material close to the reaction furnace chamber, ensure the temperature uniformity of the refractory material in the shell, reduce the temperature deviation in different areas, and avoid Different areas of the refractory parts are damaged due to large temperature differences, thereby prolonging the service life of the refractory parts and ensuring the normal operation of the flash furnace reaction tower. The reaction tower of the flash furnace has a simple structure, reliable connection of various components, convenient assembly and disassembly, and long service life.

In addition, according to the flash furnace reaction tower of the present utility model, it can also have the following additional technical features:

According to an embodiment of the present invention, the lower part of the reaction tower is a reaction concentration area, and the axial distance between two adjacent cooling elements adjacent to the reaction concentration area is smaller than that far away from the reaction concentration area. The axial spacing between two adjacent cooling elements.

According to an embodiment of the present invention, the axial distance between two adjacent cooling elements gradually decreases from top to bottom along the axial direction of the housing.

According to an embodiment of the present invention, the axial distance between the centers of two adjacent cooling elements adjacent to the reaction concentrated area is D1, 270mm≤D1≤300mm.

Preferably, D1 = 290mm.

According to an embodiment of the present utility model, the axial distance between the centers of two adjacent cooling elements away from the reaction concentrated area is D2, 385mm≤D2≤420mm.

Preferably, D2=390mm.

According to an embodiment of the present utility model, the height of the cooling element in the axial direction of the housing is H, and 75mm≤H<80mm.

Preferably, the height H of the cooling element in the axial direction of the housing is 76mm.

According to an embodiment of the present invention, the cooling element is formed in a ring shape, and the refractory material element is provided on the inner surface of the shell except for the area occupied by the cooling element, and the cooling element extends into the The length inside the casing is less than or equal to the thickness of the refractory material piece.

According to an embodiment of the present invention, the length of the cooling element protruding into the shell is L, the thickness of the refractory material is T, and L/T=0.9-1.

According to an embodiment of the utility model, the cooling element is a copper water jacket.

According to an embodiment of the present invention, the housing is made of steel, flanges are respectively provided on the upper and lower sides of each cooling unit, and the cooling units are fixed on the housing through the flanges.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is a partial structural schematic diagram of a flash furnace reaction tower according to an embodiment of the present invention.

Reference signs:

100: flash furnace reaction tower;

10: shell; 11: reaction chamber;

20: refractory material parts;

30: cooling element;

40: flange;

50: connectors.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

The multiple copper water jackets of the flash furnace reaction tower in the related art are arranged at equal intervals, and the distance between two adjacent copper water jackets is relatively large. This structure can adapt to the early smelting process. However, with the increase in production scale Expanding, the heat load intensity of the volume inside the reaction tower is getting higher and higher, this arrangement can no longer meet the production requirements, so it is necessary to optimize the structural size of the flash furnace reaction tower.

Therefore, the utility model proposes a flash furnace reaction tower. The flash furnace reaction tower has a simple structure, reliable connection of various parts, convenient assembly and disassembly, long service life, and can meet actual production requirements.

The flash furnace reaction tower 100 according to the embodiment of the present utility model will be described in detail below with reference to FIG. 1 .

The flash furnace reaction tower 100 according to the embodiment of the present utility model includes a shell 10 , a refractory material piece 20 and a plurality of cooling pieces 30 . Specifically, the casing 10 is formed into a column shape, the refractory material piece 20 is laid on the inner side wall of the casing 10, and a plurality of cooling elements 30 are arranged on the casing 10 and arranged at intervals along the axial direction of the casing 10. In the thickness direction of 10, one end of each cooling element 30 is connected to the outer wall of the shell 10, and the other end of each cooling element 30 extends into the refractory material element 20 to cool the refractory material element 20. The passage of the cooling element 30 At least a portion (not shown) is offset toward the inner end of the refractory piece 20 relative to the middle of the sidewall of the refractory piece 20 .

In other words, the flash furnace reaction tower 100 is mainly composed of a shell 10 , a refractory material piece 20 and a plurality of cooling pieces 30 . Wherein, the housing 10 is formed as a column extending in the vertical direction (up and down as shown in FIG. The shell 10 that is provided with the refractory material part 20 defines the reaction furnace cavity 11, and by setting the refractory material part 20 on the inner wall of the shell 10, the refractory strength of the shell 10 of the flash furnace reaction tower 100 can be increased, In addition, the thickness of the housing 10 can be increased, thereby improving the structural strength of the housing 10 .

Further, the casing 10 is provided with a plurality of cooling elements 30 arranged at intervals, and the axial distance between the centers of two adjacent cooling elements 30 is D, and one end of each cooling element 30 can be fixed to the shell through a connecting piece 50 On the outer wall of the body 10, the other end of each cooling element 30 extends radially of the casing 10 and extends into the refractory material piece 20. Specifically, the length of each cooling piece 30 inserted into the refractory material piece 20 is less than or equal to The thickness of the refractory material part 20 in the radial direction of the shell 10, when the flash furnace reaction tower 100 is working, a plurality of cooling parts 30 can cool the shell 10 and the refractory material part 20 in the shell 10, avoiding The casing 10 and the refractory material part 20 are damaged due to overheating, and they can support the refractory material part 20 to ensure the structural stability of the flash furnace reaction tower 100 .

Optionally, each cooling element 30 may form an annular plate or a fan-shaped plate, each cooling element 30 is provided with a channel, and in the radial direction of the shell 10, at least a part of the channel is adjacent to the inner wall surface of the refractory material element 20 Set, to carry out rapid cooling to the part of the refractory material part 20 close to the reaction furnace cavity 11, when the flash furnace reaction tower 100 is working, it can pass into the cooling liquid in the channel of the cooling part 30, so that the cooling liquid is in the cooling part The circulating flow in the passage of 30 achieves the purpose of reducing the temperature of the refractory material piece 20 .

Therefore, according to the flash furnace reaction tower 100 of the embodiment of the present utility model, a plurality of cooling elements 30 arranged at intervals along the axial direction of the casing 10 are arranged in the refractory material piece 20 in the casing 10, and the cooling At least a part of the channel of the piece 30 is biased towards the inner side of the refractory piece 20 relative to the middle part of the side wall of the refractory piece 20, so that the temperature of the refractory piece 20 close to the reaction furnace cavity 11 can be rapidly cooled, and the temperature inside the housing 10 can be guaranteed. The temperature uniformity of the refractory material piece 20 can be reduced, the temperature deviation in different areas can be reduced, and the different areas of the refractory material piece 20 can be prevented from being damaged due to large temperature differences, thereby prolonging the service life of the refractory material piece 20 and ensuring the reaction of the flash furnace Tower 100 is working properly. The flash furnace reaction tower 100 has a simple structure, reliable connection of each component, convenient assembly and disassembly, and long service life.

Wherein, according to an embodiment of the present utility model, the lower part of the reaction tower 100 is a concentrated reaction area, and the axial distance between two adjacent cooling elements 30 adjacent to the concentrated reaction area is smaller than that between two adjacent cooling elements 30 away from the concentrated reaction area. Axial spacing between cooling elements 30 .

That is to say, since the lower part in the shell 10 of the reaction tower 100 is the reaction concentrated area, therefore, in the reaction furnace chamber 11 in the shell 10, the temperature in the upper area is relatively low, while the temperature in the lower area is lower. Higher, in order to ensure that the temperature of the refractory material pieces 20 in different regions in the reaction furnace chamber 11 is uniform, cooling pieces 30 with denser intervals can be arranged at positions adjacent to the reaction concentration area, and cooling elements 30 with denser intervals can be arranged at positions far away from the reaction concentration area. The cooling elements 30 are separated by a larger distance.

When the flash furnace reaction tower 100 is in operation, cooling liquid can be introduced into the passages of multiple cooling elements 30. Since the intervals between the cooling elements 30 away from the reaction concentration area are relatively large, the cooling elements 30 adjacent to the reaction concentration area The intervals are small, multiple cooling elements 30 can reduce the temperature deviation of the refractory material 20 in different regions, avoid damage to different regions of the refractory material 20 due to large temperature differences, thereby prolonging the service life of the refractory material 20 .

Preferably, according to an embodiment of the present invention, the axial distance between two adjacent cooling elements 30 decreases gradually along the axial direction of the casing 10 from top to bottom. For example, from top to bottom, the axial distance between two adjacent cooling elements 30 can be gradually reduced according to a certain rule, which can not only ensure the compactness of the structure, but also ensure the temperature uniformity of the refractory material element 20 in the casing 10 , reduce the temperature deviation in different regions, avoid damage to different regions of the refractory material part 20 due to large temperature differences, thereby prolonging the service life of the refractory material part 20 .

Optionally, according to an embodiment of the present invention, the axial distance between the centers of two adjacent cooling elements 30 adjacent to the reaction concentrated area is D1, 270mm≤D1≤300mm. For example, the axial distance D1 between the centers of two adjacent cooling parts 30 adjacent to the reaction concentrated area can be 270 mm, 290 mm or 300 mm, which can meet the casting requirements of the refractory material part 20 and avoid the high cost of the refractory material part 20 .

Optionally, according to an embodiment of the present invention, the axial distance between the centers of two adjacent cooling elements 30 away from the reaction concentrated area is D2, 385mm≤D2≤420mm. For example, the axial distance D2 between the centers of two adjacent cooling parts 30 away from the reaction concentrated area can be 385 mm, 390 mm or 420 mm, etc., to meet the casting requirements of the refractory material part 20 and improve the stability of the refractory material part 20 in the reaction furnace chamber 11. The high temperature resistance strength prolongs the service life of the flash furnace reaction tower 100.

Therefore, by optimizing the axial spacing between the centers of two adjacent cooling elements 30 and adjusting the distance between adjacent two cooling elements 30 according to the distance from the reaction concentrated area, the temperature uniformity of the refractory material element 20 can be ensured. , to prevent damage to the refractory material part 20, ensure the reliability of the refractory material part 20, prolong the service life of the refractory material part 20, save costs and meet the actual production requirements.

Further, the height of the cooling element 30 in the axial direction of the casing 10 is H, and 75mm≦H<80mm. Preferably, the height H of the cooling element 30 in the axial direction of the housing 10 is 75 mm, 76 mm, or 79 mm. For example, if the height H of the cooling element 30 in the axial direction of the housing 10 is 76 mm, the inner sides of two adjacent cooling elements 30 close to the reaction concentration area can be set to 214 mm, and the inner sides of the two adjacent cooling elements 30 away from the reaction concentration area can be set to 214 mm. The inner spacing of each cooling element 30 is set to 314mm, so that the axial spacing between the centers of two adjacent cooling elements 30 in different regions satisfies the above relationship, which can not only meet the actual production requirements, but also reduce the cost.

In some specific embodiments of the present utility model, the cooling element 30 forms a ring shape, and the area occupied by the cooling element 30 is provided with a refractory material element 20 on the inner surface of the shell 10, and the cooling element 30 extends into the shell 10. The length is less than or equal to the thickness of the refractory material piece 20 .

Referring to Fig. 1, the housing 10 is composed of a plurality of columns extending up and down, each section of the column is provided with a refractory material 20 with a certain thickness on the inner wall surface, and the cooling element 30 forms an annular plate and is arranged on two adjacent sides. Between two columns, specifically, the upper surface and the lower surface of the outer end of the cooling element 30 are respectively fixed on the housing 10 through the connecting piece 50, and the upper surface and the lower surface of the inner end of the cooling element 30 are connected with the refractory material piece 20 respectively. Adjacent, in the radial direction of the shell 10, the length of the cooling element 30 protruding into the shell 10 is less than or equal to the thickness of the refractory material piece 20, that is, the inner diameter of the cooling element 30 is greater than or equal to the inner diameter of the refractory material piece 20, and The outer diameter of the cooling element 30 is larger than the outer diameter of the shell 10, which can ensure that the cooling element 30 can be stably installed on the shell 10, and can maximize the cooling effect of the cooling element 30 on the refractory material element 20, The service reliability of the refractory material piece 20 is guaranteed.

Preferably, according to an embodiment of the present invention, the length of the cooling element 30 protruding into the casing 10 is L, the thickness of the refractory material element 20 is T, and L/T=0.9-1. For example, the length of the cooling element 30 protruding into the housing 10 can be equal to the thickness of the refractory material element 20, or it can be 0.9 times, 0.95 times, 0.99 times the thickness of the refractory material element 20, etc., so that the cooling element 30 can be guaranteed The temperature of the refractory material piece 20 is fully cooled in the radial direction of the housing 10 , thereby improving the reliability of the refractory material piece 20 and prolonging the service life of the refractory material piece 20 .

Optionally, the cooling element 30 is a copper water jacket. Specifically, a copper water jacket with appropriate specifications can be selected according to the size of the shell 10 and the thickness of the refractory material part 20, and the heat exchange area can be increased as far as possible on the basis of ensuring the structural strength, thereby improving the effect of the copper water jacket on the refractory material part 20. cooling effect.

Advantageously, according to an embodiment of the present invention, the casing 10 is made of steel, the upper and lower sides of each cooling element 30 are respectively provided with flanges 40 , and the cooling elements 30 are fixed on the casing 10 through the flanges 40 .

Specifically, as shown in FIG. 1 , in this embodiment, each cooling element 30 forms an annular plate, and flanges 40 are provided on the upper surface and the lower surface of the outer end of each cooling element 30 , wherein the cooling The flange 40 above the part 30 is connected to the lower end of the upper column, the flange 40 located below the cooling part 30 is connected to the upper end of the next column, and the two flanges 40 on the upper and lower sides of the cooling part 30 pass through The connecting parts 50 are fixed together to realize the connection between the cooling part 30 and the housing 10. This method has a simple structure, convenient assembly and disassembly, strong manufacturability, and reliable connection, which can meet actual production requirements.

The flash furnace reaction tower 100 according to the embodiment of the present utility model will be specifically described below in conjunction with multiple embodiments.

As shown in FIG. 1 , the entire flash furnace reaction tower 100 is mainly composed of a shell 10 , refractory material pieces 20 , multiple copper water jackets 30 , multiple flanges 40 , and multiple connecting pieces 50 (such as bolts and nuts). Wherein, the shell 10 of the reaction tower 100 forms a column extending in the vertical direction, and the shell 10 is welded by a steel plate with a thickness of 30mm-50mm, and the copper water jacket is fixed on the steel structure shell through the flange 40 and bolts and nuts. 10, refractory materials are filled between two adjacent copper water jackets in the housing 10. In order to better cool the refractory material piece 20 , the length L of the copper water jacket inserted into the shell 10 is optimally 90%-100% of the thickness T of the refractory material piece 20 . Considering that the volumetric heat intensity of different areas in the reaction tower 100 is different, since the lower part of the reaction tower 100 is a concentrated reaction area, the volumetric heat load there is higher, so the distance D1 between two adjacent copper water jackets in this area is required to be smaller, Specifically, the center-to-center distance D1 of two adjacent copper water jackets is controlled within the range of 270mm-300mm, while for the upper part of the reaction tower 100, the center-to-center distance D2 of two adjacent copper water jackets is controlled within the range of 385mm-420mm, so as to satisfy Production requirements, considering the casting requirements and cost of the copper water jacket, it is best to control the height H of the copper water jacket between 75mm and 80mm.

Embodiment one

In this embodiment, the thickness H of the copper water jacket in the axial direction of the housing 10 is 76 mm, and the distance between two adjacent copper water jackets in the reaction concentration area at the bottom of the reaction tower 100 is controlled at 194 mm-224 mm. For example, the reaction The distance between the inner sides of two adjacent copper water jackets in the concentration area can be 214mm, therefore, the center distance between the two adjacent copper water jackets in the reaction concentration area satisfies the condition of 270mm≤D1≤300mm; and the reaction tower 100 The distance between the inner sides of two adjacent copper water jackets in the upper part is controlled at 309mm-344mm. For example, the distance between the inner sides of two adjacent copper water jackets away from the reaction concentration area is 314mm. The center distance between sets satisfies 385mm≤D2≤420mm.

Embodiment two

In this embodiment, the thickness H of the copper water jacket in the axial direction of the housing 10 is 79 mm, and the distance between two adjacent copper water jackets in the reaction concentrated area at the bottom of the reaction tower 100 is controlled at 191 mm-221 mm. Therefore, the reaction The center distance between two adjacent copper water jackets in the concentrated area satisfies the condition of 270mm≤D1≤300mm; while the inner distance between two adjacent copper water jackets on the upper part of the reaction tower 100 is controlled at 306mm-341mm, therefore, The distance between the centers of two adjacent copper water jackets in this area satisfies 385mm≤D2≤420mm.

Therefore, according to the flash furnace reaction tower 100 of the embodiment of the present utility model, a plurality of cooling elements 30 arranged at intervals along the axial direction of the casing 10 are arranged in the refractory material piece 20 in the casing 10, and the cooling At least a part of the channel of the piece 30 is biased towards the inner side of the refractory piece 20 relative to the middle part of the side wall of the refractory piece 20, so that the temperature of the refractory piece 20 close to the reaction furnace cavity 11 can be rapidly cooled, and the temperature inside the housing 10 can be guaranteed. The temperature uniformity of the refractory material piece 20 can be reduced, the temperature deviation in different areas can be reduced, and the different areas of the refractory material piece 20 can be prevented from being damaged due to large temperature differences, thereby prolonging the service life of the refractory material piece 20 and ensuring the reaction of the flash furnace Tower 100 is working properly.

Furthermore, by optimizing the axial distance between the centers of two adjacent cooling elements 30, and adjusting the distance between adjacent two cooling elements 30 according to the distance from the reaction concentrated area, the temperature uniformity of the refractory material element 20 can be ensured. , to prevent damage to the refractory material part 20, ensure the reliability of the refractory material part 20, prolong the service life of the refractory material part 20, save costs and meet the actual production requirements. The flash furnace reaction tower 100 has a simple structure, reliable connection of each component, convenient assembly and disassembly, and long service life.

Other configurations and operations of the flash furnace reaction tower 100 according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail here.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components , unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (13)

1. A flash furnace reaction tower, characterized in that, comprising: a shell, the shell is formed into a column; A piece of refractory material, the piece of refractory material is laid on the inner side wall of the shell; A plurality of cooling elements, the plurality of cooling elements are provided on the casing and arranged at intervals along the axial direction of the casing, in the thickness direction of the casing, one end of each cooling element is connected to The outer side walls of the casing are connected, and the other end of each cooling element extends into the refractory material piece to cool the refractory material piece, and at least a part of the channel of the cooling piece is opposite to the refractory material piece. A central portion of the sidewall of the piece is offset toward the inner end of the piece of refractory material. 2. according to the flash furnace reaction tower described in claim 1, it is characterized in that, the bottom in the described reaction tower is a reaction concentration area, adjacent to the adjacent two cooling parts between the reaction concentration area The axial distance is smaller than the axial distance between two adjacent cooling elements away from the reaction concentration zone. 3 . The flash furnace reaction tower according to claim 2 , wherein the axial distance between two adjacent cooling elements decreases gradually along the axial direction of the casing from top to bottom. 4 . 4 . The flash furnace reaction tower according to claim 2 , wherein the axial distance between the centers of two adjacent cooling elements adjacent to the reaction concentration area is D1, 270mm≤D1≤300mm. 5. The flash furnace reaction tower according to claim 4, characterized in that D1=290mm. 6. The flash furnace reaction tower according to claim 2, characterized in that the axial distance between the centers of two adjacent cooling elements away from the reaction concentration zone is D2, 385mm≤D2≤420mm. 7. The flash furnace reaction tower according to claim 6, characterized in that D2=390mm. 8. The flash furnace reaction tower according to claim 1, characterized in that, the height of the cooling element in the axial direction of the shell is H, and 75mm≤H<80mm. 9. The flash furnace reaction tower according to claim 8, characterized in that, the height H of the cooling element in the axial direction of the casing is 76mm. 10. The flash furnace reaction tower according to claim 1, characterized in that, the cooling element forms an annular shape, and the inner surface of the shell except the area occupied by the cooling element is provided with the refractory A material piece, the length of the cooling piece protruding into the shell is less than or equal to the thickness of the refractory material piece. 11. The flash furnace reaction tower according to claim 1 or 10, characterized in that, the length of the cooling element protruding into the shell is L, and the thickness of the refractory material is T, L/T =0.9-1. 12. The flash furnace reaction tower according to any one of claims 1-10, characterized in that the cooling element is a copper water jacket. 13. The flash furnace reaction tower according to any one of claims 1-10, wherein the housing is a steel material, and flanges are respectively arranged on the upper and lower sides of each cooling member, The cooling element is fixed on the housing through a flange.