Heat exchange unit of roasting furnace cooler
By adopting the disconnected continuous heat dissipation fin design in the roasting furnace cooler heat exchange unit, the problems of poor material flowability and high cost are solved, and more efficient material heat exchange and fluidity are achieved, reducing production costs and occupation local demand.
Patent Information
- Application Number
- CN202420239500.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-01
AI Technical Summary
The fin structure of the existing roasting furnace cooler heat exchange unit causes the material flow effect to be worse and the production cost is high.
The disconnected continuous heat dissipation fin design is adopted, and symmetrically disconnected continuous heat dissipation fins are set on the outside of the heat exchange tube through high-frequency welding and mechanical cutting, which increases material flowability and strengthens the heat exchange effect, while reducing labor costs and equipment investment.
The material flow rate and heat exchange efficiency are improved, the heat exchange area and heat transfer coefficient are increased, the material mixing uniformity is ensured, and the production cost and land occupation demand are reduced.
Smart Images
Figure CN222165792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a roasting furnace cooler heat exchange unit. Background Art
[0002] The rapid development of the alumina industry has promoted the continuous improvement of its production technology and equipment level, the continuous expansion of factory scale, and the continuous improvement of production processes, making production equipment increasingly large-scale and efficient. The specifications of a single aluminum hydroxide roasting furnace have developed from 360t / d to 4000t / d, and the matching cooler heat exchange unit has also been optimized to ensure that the cooling effect of alumina meets the requirements of belt conveyor. Traditional technologies such as increasing the size of the heat exchange unit, replacing the heat exchange tube from a plain tube to a corrugated tube, a wide-pitch spiral fin tube, a narrow-pitch independent circular fin tube or a square fin tube, etc.
[0003] The fins on existing heat exchange tubes are mostly continuous structures, which can improve the heat exchange effect of materials, but easily lead to poor flow effect of materials in the heat exchange unit. Therefore, how to increase material fluidity while ensuring the heat exchange effect of materials and reduce costs is the key to current technology. Utility Model Content
[0004] The utility model aims to provide a roasting furnace cooler heat exchange unit to solve the problems existing in the above-mentioned prior art, ensure the heat exchange effect of materials, increase the fluidity of materials and reduce costs.
[0005] To achieve the above purpose, the utility model provides the following solutions:
[0006] The utility model provides a roasting furnace cooler heat exchange unit, comprising a first header, a second header, a first rising riser group, a first descending riser group, a second rising riser group, a second descending riser group, a third rising riser group, a third descending riser group, a fourth rising riser group and a fourth descending riser group; the first header has at least one cavity group one, each of the cavity groups one includes a first cavity, a second cavity and a third cavity separated from each other, the second header has at least one cavity group two, each of the cavity groups two includes a fourth cavity and a fifth cavity separated from each other; an inlet for a cooling medium to enter is provided on the first cavity, and the first cavity is connected to the first descending riser group, the first descending riser group is connected to the first rising riser group through a plurality of heat exchange tubes; the first rising riser group is connected to the fourth cavity; the fourth cavity is connected to the second descending riser group , the second descending riser group is connected to the second ascending riser group through a plurality of the heat exchange tubes; the second ascending riser group is connected to the second cavity; the second cavity is connected to the third descending riser group, and the third descending riser group is connected to the third ascending riser group through a plurality of the heat exchange tubes; the third ascending riser group is connected to the fifth cavity; the fifth cavity is connected to the fourth descending riser group, and the fourth descending riser group is connected to the fourth ascending riser group through a plurality of the heat exchange tubes; the fourth ascending riser group is connected to the third cavity, and an outlet for discharging cooling medium is provided on the third cavity; the heat exchange tube includes a transverse tube and a continuous heat dissipation fin, the continuous heat dissipation fin is fixedly arranged on the outer side wall of the transverse tube, the continuous heat dissipation fin is symmetrically broken on two opposite sides, and the distance between adjacent fins of the continuous heat dissipation fin is 10mm.
[0007] Preferably, the length of the disconnected portion of the continuous heat dissipating fin is 2 mm to 8 mm.
[0008] Preferably, the first rising riser group, the first descending riser group, the second rising riser group, the second descending riser group, the third rising riser group, the third descending riser group, the fourth rising riser group and the fourth descending riser group each include N vertical risers, where N is an integer between 2 and 10.
[0009] Preferably, the continuous heat dissipating fins have a fin height of 12.5 mm and a fin thickness of 2 mm.
[0010] Preferably, it further comprises a sewage pipe, which is arranged below each of the heat exchange tubes, and the sewage pipe is connected to each of the heat exchange tubes located at the bottom.
[0011] Preferably, it further comprises a cooling medium inlet pipe and a cooling medium outlet pipe, wherein the cooling medium inlet pipe is connected to and communicated with the first cavity, and the cooling medium outlet pipe is connected to and communicated with the fifth cavity.
[0012] Compared with the prior art, the utility model has achieved the following technical effects:
[0013] The heat exchange unit of the roasting furnace cooler provided by the utility model can increase the flow of materials along the continuous heat dissipation fins and improve the material flow rate by adopting the disconnection design of the heat exchange tube; it can slow down the material flow rate compared with the wide-pitch spiral fin tube, strengthen the material heat exchange efficiency, increase the heat exchange area and the heat transfer coefficient; when it adopts the narrow-pitch spiral fin structure, in terms of its processing and manufacturing process, it can use high-frequency welding to weld the continuous spiral fins on the horizontal tube using welding equipment, and then mechanically cut the outer continuous heat dissipation fins symmetrically, and each heat exchange tube has two The fracture in the line direction is completely processed by mechanical means, which reduces labor costs, ensures welding quality, and reduces equipment investment. Compared with the existing continuous narrow-pitch spiral finned tubes, the disconnected design can increase the material flow rate and make the material mixing more uniform, avoiding the small heat exchange area of the corrugated tube, the poor heat exchange effect of the wide-pitch spiral finned tube, the difficulty in cutting the narrow-pitch independent finned tube, and the difficulty in ensuring the quality of manual welding due to manual processing. The heat exchange area per unit space is increased, the comprehensive heat transfer coefficient is increased, the material flow is smooth, the space is small, and the investment is low.
[0014] Furthermore, the length of the disconnected portion of the continuous heat dissipating fin is set to 2 mm to 8 mm, which can be used in the cutting gap of the existing cutting equipment and can also ensure that the flow effect of the material is increased to a certain extent.
[0015] Furthermore, the number of vertical risers is 2 to 10, which can be reasonably arranged according to the required size to be suitable for use with different heat exchange requirements.
[0016] Furthermore, the height and thickness setting of the continuous heat dissipation fins can ensure that the spiral fins are more stable, firm and not deformed during use, and can fully exchange heat for the material.
[0017] Furthermore, the provision of the sewage pipe can discharge the dirt deposited in each heat exchange tube at the bottom in time, thereby avoiding blockage and affecting the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1A front view of a roasting furnace cooler heat exchange unit provided by the utility model;
[0020] Figure 2 A left side view of a roasting furnace cooler heat exchange unit provided by the utility model;
[0021] Figure 3 A top view of a roasting furnace cooler heat exchange unit provided by the utility model;
[0022] Figure 4 The utility model provides a schematic diagram of the structure of the heat exchange tube in the roasting furnace cooler heat exchange unit.
[0023] In the figure: 100 - roasting furnace cooler heat exchange unit;
[0024] 10-first header; 11-first cavity; 12-second cavity; 13-third cavity;
[0025] 20-second header; 21-fourth cavity; 22-fifth cavity;
[0026] 30-heat exchange tube; 31-horizontal tube; 32-continuous heat dissipation fin;
[0027] 40-vertical riser;
[0028] 50-Cooling medium inlet pipe;
[0029] 60-cooling medium discharge pipe;
[0030] 70-Sewage pipe. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] The utility model aims to provide a roasting furnace cooler heat exchange unit to solve the problems existing in the prior art, ensure the heat exchange effect of materials, increase the fluidity of materials and reduce costs.
[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0034] Embodiment 1
[0035] This embodiment provides a roasting furnace cooler heat exchange unit, which is mainly but not limited to heat exchange in an aluminum hydroxide roasting furnace, such as Figure 1 to Figure 4 As shown, it includes a first header 10, a second header 20, a first rising riser group, a first descending riser group, a second rising riser group, a second descending riser group, a third rising riser group, a third descending riser group, a fourth rising riser group and a fourth descending riser group; the first header 10 has at least one cavity group one, each cavity group one includes a first cavity 11, a second cavity 12 and a third cavity 13 separated from each other, the second header 20 has at least one cavity group two, each cavity group two includes a fourth cavity 21 and a fifth cavity 22 separated from each other; an inlet for the cooling medium to enter is provided on the first cavity 11, and the first cavity 11 is connected to the first descending riser group, and the first descending riser group is connected to the first rising riser group through a plurality of heat exchange tubes 30; the first rising riser group is connected to the fourth cavity 21; the fourth cavity 21 is connected to the second descending riser group The second descending riser group is connected with the second ascending riser group through a plurality of heat exchange tubes 30; the second ascending riser group is connected with the second cavity 12; the second cavity 12 is connected with the third descending riser group, and the third descending riser group is connected with the third ascending riser group through a plurality of heat exchange tubes 30; the third ascending riser group is connected with the fifth cavity 22; the fifth cavity 22 is connected with the fourth descending riser group, and the fourth descending riser group is connected with the fourth ascending riser group through a plurality of heat exchange tubes 30; the fourth ascending riser group is connected with the third cavity 13, and the third cavity 13 is provided with an outlet for discharging the cooling medium; the heat exchange tube 30 includes a transverse tube 31 and a continuous heat dissipation fin 32, the continuous heat dissipation fin 32 is fixedly arranged on the outer side wall of the transverse tube 31, the continuous heat dissipation fin 32 is symmetrically disconnected on the opposite sides, and the distance between adjacent fins of the continuous heat dissipation fin 32 is 10mm.
[0036] By adopting the disconnection design of the heat exchange tube 30, the flow of materials along the continuous heat dissipation fins 32 can be increased, and the material flow rate can be improved; compared with the wide-pitch spiral fin tube, it can slow down the material flow rate, enhance the material heat exchange efficiency, and increase the heat exchange area and heat transfer coefficient; when it adopts a narrow-pitch spiral fin structure, it can use high-frequency welding to weld the continuous spiral fins to the horizontal tube 31 using welding equipment, and then mechanically cut the outer continuous heat dissipation fins 32 symmetrically, and each heat exchange tube 30 has two disconnections along its axis. This method completely adopts mechanical processing, reduces labor costs, ensures welding quality, and reduces equipment investment; and compared with the existing continuous narrow-pitch spiral finned tubes, the disconnected design can increase the material flow rate and make the material mixing more uniform, avoiding the small heat exchange area of the corrugated tube, the poor heat exchange effect of the wide-pitch spiral finned tube, the difficulty in cutting the narrow-pitch independent finned tube, and the difficulty in ensuring the quality of manual welding due to manual processing, so as to increase the heat exchange area per unit space, increase the comprehensive heat transfer coefficient, smooth material flow, small footprint, and low investment.
[0037] Specifically, the heat exchange tube 30 with a disconnected structure can be formed by directly cutting the fracture on the basis of an existing corrugated tube, a spiral fin tube with a wide pitch, an independent circular fin tube with a narrow pitch, or a square fin tube, etc., and has a low degree of processing difficulty.
[0038] Specifically, the continuous heat dissipation fins 32 may be continuous spiral fins or a plurality of independent circular fins or square fins.
[0039] Specifically, Figure 4 As shown, the continuous heat dissipation fins 32 are formed by cutting the continuous spiral fins.
[0040] Specifically, the transverse tube 31 may be a smooth tube, and its outer diameter may be 25 mm, 32 mm, or 38 mm.
[0041] In the optional solution of this embodiment, it is more preferred that the length of the disconnection of the continuous heat dissipation fin 32 is 2mm to 8mm. The length of the disconnection of the continuous heat dissipation fin 32 is set to 2mm to 8mm, which can be used in the cutting gap of the existing cutting equipment and can also ensure that the flow effect of the material is increased to a certain extent.
[0042] In the optional solution of this embodiment, preferably, the first rising riser group, the first descending riser group, the second rising riser group, the second descending riser group, the third rising riser group, the third descending riser group, the fourth rising riser group and the fourth descending riser group all include N vertical risers 40, where N is an integer between 2 and 10. The number of vertical risers 40 is 2 to 10, which can be reasonably set according to the required size, so as to be suitable for use with different heat exchange requirements.
[0043] In the optional scheme of this embodiment, it is more preferred that the fin height of the continuous heat dissipation fin 32 is 12.5mm and the fin thickness is 2mm. The height and thickness setting of the continuous heat dissipation fin 32 can ensure that the spiral fin is more stable and firm without deformation during use, and can fully exchange heat for the material.
[0044] Among the optional solutions of this embodiment, it is more preferred that Figure 2 As shown, the roasting furnace cooler heat exchange unit 100 also includes a drain pipe 70, which is arranged below each heat exchange tube 30, and the drain pipe 70 is connected to each heat exchange tube 30 at the bottom. The setting of the drain pipe 70 can timely discharge the dirt deposited in each heat exchange tube 30 at the bottom to avoid blockage and affect the heat exchange effect.
[0045] Among the optional solutions of this embodiment, it is more preferred that Figure 1 to Figure 3 As shown, the roasting furnace cooler heat exchange unit 100 also includes a cooling medium inlet pipe 50 and a cooling medium outlet pipe 60 . The cooling medium inlet pipe 50 is connected and communicated with the first cavity 11 , and the cooling medium outlet pipe 60 is connected and communicated with the fifth cavity 22 .
[0046] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A roasting furnace cooler heat exchange unit, characterized in that: It includes a first header, a second header, a first rising riser group, a first descending riser group, a second rising riser group, a second descending riser group, a third rising riser group, a third descending riser group, a fourth rising riser group and a fourth descending riser group; The first header has at least one cavity group 1, each of the cavity groups 1 includes a first cavity, a second cavity and a third cavity separated from each other, and the second header has at least one cavity group 2, each of the cavity groups 2 includes a fourth cavity and a fifth cavity separated from each other; The first cavity is provided with an inlet for the cooling medium to enter, and the first cavity is connected to the first descending riser group, and the first descending riser group is connected to the first ascending riser group through a plurality of heat exchange tubes; The first rising riser group is in communication with the fourth cavity; the fourth cavity is in communication with the second descending riser group, and the second descending riser group is in communication with the second rising riser group through a plurality of the heat exchange tubes; The second rising riser group is in communication with the second cavity; the second cavity is in communication with the third descending riser group, and the third descending riser group is in communication with the third rising riser group through a plurality of the heat exchange tubes; The third rising riser group is in communication with the fifth cavity; the fifth cavity is in communication with the fourth descending riser group, and the fourth descending riser group is in communication with the fourth rising riser group through a plurality of the heat exchange tubes; The fourth rising riser group is in communication with the third cavity, and the third cavity is provided with a discharge port for discharging cooling medium; The heat exchange tube includes a transverse tube and continuous heat dissipation fins. The continuous heat dissipation fins are fixedly arranged on the outer side wall of the transverse tube. The continuous heat dissipation fins are symmetrically broken on two opposite sides, and the distance between adjacent fins of the continuous heat dissipation fins is 10 mm.
2. The roasting furnace cooler heat exchange unit according to claim 1, characterized in that: The length of the disconnected portion of the continuous heat dissipation fin is 2 mm to 8 mm.
3. The roasting furnace cooler heat exchange unit according to claim 1, characterized in that: The first rising riser group, the first descending riser group, the second rising riser group, the second descending riser group, the third rising riser group, the third descending riser group, the fourth rising riser group and the fourth descending riser group each include N vertical risers, where N is an integer between 2 and 10.
4. The roasting furnace cooler heat exchange unit according to claim 1, characterized in that: The continuous heat dissipation fins have a fin height of 12.5 mm and a fin thickness of 2 mm.
5. The roasting furnace cooler heat exchange unit according to claim 1, characterized in that: It also includes a sewage pipe, which is arranged below each of the heat exchange tubes, and the sewage pipe is connected to each of the heat exchange tubes located at the bottom.
6. The roasting furnace cooler heat exchange unit according to claim 1, characterized in that: It also includes a cooling medium inlet pipe and a cooling medium outlet pipe, wherein the cooling medium inlet pipe is connected to and communicated with the first cavity, and the cooling medium outlet pipe is connected to and communicated with the fifth cavity.