Evaporative cooler for dry dedusting and converter flue gas treatment device

Abstract

The invention relates to an evaporative cooler for dry dust removal and a converter flue gas treatment device, the evaporative cooler for dry dust removal comprises a shell, the shell comprises an inlet section and a main body section, the inlet section is provided with a first port connected with a flue gas outlet of an evaporative cooling flue, and the main body section is provided with a second port; the corrugated pipe is made of a metal material, the corrugated pipe is connected between the inlet section and the main body section, and the corrugated pipe is used for deforming when the shell is heated so as to counteract thermal expansion of the shell; the two ends of the first pull rod are connected to the inlet section and the main body section respectively, the first pull rod is of a telescopic structure, and / or the first pull rod is connected with the inlet section and / or the main body section through the telescopic structure, so that the first pull rod meets the deformation quantity of the corrugated pipe. The technical problems that the high-temperature compensator used for being connected with the tail end of the flue on the evaporative cooler is poor in sealing effect and prone to being damaged are solved.

Description

Technical Field

[0001] The present invention relates to the field of converter flue gas treatment, and further to an evaporative cooler for dry dust removal and a converter flue gas treatment device, and in particular to an evaporative cooler for dry dust removal and a converter flue gas treatment device capable of overcoming their own thermal expansion. Background Art

[0002] In the converter dry dust removal system, the flue gas will be cooled to about 1000℃ through the vaporization cooling flue, and then enter the evaporative cooler for cooling, tempering, rough dust removal and other treatments. Therefore, the evaporative cooler can be considered as an important part affecting the dry dust removal effect. Because its operating temperature is about 1000℃ and its own thermal expansion is large, the current converter dry dust removal system generally adopts the method of setting a high-temperature compensator made of non-metallic materials between the end of the flue and the evaporative cooler to absorb the expansion of the equipment, but its main disadvantages are: 1) Since the high-temperature compensator is made of non-metallic materials, it cannot be completely sealed at the connection, and there is a risk of gas leakage. 2) Since the high-temperature compensator is made of non-metallic materials, it is easy to tear and damage, and the cumbersome replacement affects normal smelting, while increasing the workload and cost of the staff, which is not conducive to the development in the direction of high efficiency and economy.

[0003] In the related technology, there is no effective solution to the problem that the high-temperature compensator used to connect the flue end on the evaporative cooler has poor sealing effect and is easy to break.

[0004] Therefore, the inventor, relying on many years of experience and practice in related industries, proposes an evaporative cooler for dry dust removal and a converter flue gas treatment device to overcome the defects of the prior art. Summary of the invention

[0005] The object of the present invention is to provide an evaporative cooler for dry dust removal and a furnace flue gas treatment device, in which a metal bellows structure is arranged at the interface with the end of the flue, the original non-metallic high-temperature compensator is eliminated, the length of the evaporative cooler in the vertical pipe section is effectively increased, and the evaporative cooling effect on the flue gas is improved.

[0006] Another object of the present invention is to provide an evaporative cooler for dry dust removal and a furnace flue gas treatment device. The setting of the bellows structure can overcome its own thermal expansion and does not generate any external force. It can be completely sealed and is not easy to be damaged, thereby extending the service life of the equipment, reducing the inspection and maintenance workload of the staff in harsh environments, and improving production efficiency.

[0007] The purpose of the present invention can be achieved by adopting the following scheme:

[0008] The present invention provides an evaporative cooler for dry dust removal, the evaporative cooler for dry dust removal comprising:

[0009] A shell, the shell comprising an inlet section and a main body section, the inlet section having a first port for connecting to a smoke outlet of a vaporization cooling flue, the smoke in the vaporization cooling flue entering the shell through the first port, and the main body section having a second port for discharging smoke after vaporization cooling in the shell;

[0010] A bellows, the bellows is made of metal material, the bellows is connected between the inlet section and the main section, and the bellows is used to deform when the shell is heated to offset the thermal expansion of the shell;

[0011] At least one first tie rod, both ends of which are respectively connected to the entrance section and the main section, the first tie rod is a telescopic structure, and / or the first tie rod is connected to the entrance section and / or the main section through a telescopic structure so that the first tie rod meets the deformation amount of the bellows.

[0012] In a preferred embodiment of the present invention, the housing is vertically arranged in a cylindrical shape, the inlet section, the bellows and the main section are sequentially connected from top to bottom, and the first port and the second port are respectively located at the top and the bottom of the housing;

[0013] The top end of the first pull rod is hinged to the top outer wall of the inlet section, and the bottom end of the first pull rod is hinged to the bottom outer wall of the main body section.

[0014] In a preferred embodiment of the present invention, a first annular reinforcement is provided on the top outer wall of the entrance section along its circumference, a second annular reinforcement is provided on the bottom outer wall of the main body section along its circumference, the top end of the first pull rod is hinged to the first reinforcement, and the bottom end of the first pull rod is hinged to the second reinforcement.

[0015] In a preferred embodiment of the present invention, the number of the first tie rods is at least four, and the four first tie rods are arranged at intervals along the circumference of the housing.

[0016] In a preferred embodiment of the present invention, the housing comprises a vertically arranged straight tube section, and the inlet section, the bellows and at least a portion of the main body section connected to the bellows are all part of the straight tube section;

[0017] The evaporative cooler for dry dust removal also includes a guide portion, which is in the shape of a cylinder with a top opening and a bottom opening vertically arranged, and the cross-sectional area of ​​the guide portion gradually increases from top to bottom. The guide portion is located in the straight cylinder section and close to the first port. The top opening of the guide portion is connected to the first port, and the bottom opening of the guide portion extends at least to a position opposite to the bellows in the axial direction.

[0018] In a preferred embodiment of the present invention, an annular fixing plate is arranged between the bellows and the guide portion along the circumference of the bellows, a first heat insulating filling layer is arranged between the outer wall surface of the fixing plate and the inner wall surface of the bellows, and a heat-resistant layer is arranged between the inner wall surface of the fixing plate and the outer wall surface of the guide portion.

[0019] In a preferred embodiment of the present invention, a second heat-insulating filling layer is provided between the outer wall surface of the guide portion and the inner wall surface of the inlet section.

[0020] In a preferred embodiment of the present invention, the outer shell includes a tapered section with a gradually decreasing cross-sectional area from top to bottom, the tapered section is a part of the main section and is located at the lower part of the main section, the top of the tapered section is connected to the bottom of the straight tube section, and the bottom of the tapered section forms the second opening.

[0021] In a preferred embodiment of the present invention, in a non-working state, a second pull rod for positioning the length of the bellows is provided on the outer side of the bellows, and the top and bottom ends of the second pull rod are respectively connected to the top and bottom of the bellows.

[0022] In a preferred embodiment of the present invention, a limit support is provided on the outer wall of the shell and located in the middle or upper middle part of the shell, and the limit support is used to support the shell on a preset limit platform;

[0023] And / or, a fixing support is provided at the bottom of the shell, and the fixing support is used to support the shell on a preset fixing platform.

[0024] In a preferred embodiment of the present invention, there are multiple limit supports, which are arranged at intervals along the circumference of the shell, and the limit supports are fixedly connected to the limit platform by bolts;

[0025] And / or, there are multiple fixed supports, the multiple fixed supports are arranged at intervals along the circumference of the shell, and the fixed supports are fixedly connected to the fixed platform by bolts.

[0026] The present invention provides a converter flue gas treatment device, the converter flue gas treatment device comprising:

[0027] The above-mentioned evaporative cooler for dry dust removal;

[0028] The vaporization cooling flue has an inlet connected to a movable smoke hood, and an outlet connected to the evaporative cooler for dry dust removal.

[0029] As described above, the characteristics and advantages of the evaporative cooler for dry dust removal of the present invention are:

[0030] A bellows made of metal material is arranged between the inlet section and the main section of the shell. The bellows is used to absorb thermal expansion and deform when the shell is heated, thereby offsetting the thermal expansion of the shell and avoiding the influence of thermal expansion on other parts of the evaporative cooler. In addition, since a first pull rod is connected between the inlet section and the main section, the first pull rod is a telescopic structure, and / or the first pull rod is connected to the inlet section and / or the main section through the telescopic structure, when the bellows is deformed, the first pull rod can be slightly extended and retracted to meet the deformation amount of the bellows, and the elastic force and blind plate force generated by the bellows will be absorbed by the first pull rod, and the bellows will not generate any external force, thereby ensuring the stable operation of the equipment.

[0031] Through the arrangement of the bellows of the present invention, the connection position between the bellows and the inlet section and the main section can be completely sealed, and the bellows made of metal material can be ensured not to be easily damaged, thereby extending the service life of the equipment, reducing the inspection and maintenance workload of the staff in harsh environments, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0033] in:

[0034] Figure 1 : is a schematic structural diagram of an evaporative cooler for dry dust removal according to the present invention.

[0035] Figure 2 :for Figure 1 A partial enlarged view of position A in the middle.

[0036] The accompanying drawings in the present invention are:

[0037] 1. Vaporization cooling flue; 2. Interface flange;

[0038] 3. Flow guide; 4. Connecting pipe;

[0039] 5. Bellows; 6. First tie rod;

[0040] 7. Second pull rod; 8. Housing;

[0041] 801, straight section; 802, necking section;

[0042] 803, a first reinforcement member; 804, a second reinforcement member;

[0043] 805, entrance section; 806, main section;

[0044] 9. Limit support; 10. Manhole;

[0045] 11. Fixed support; 12. Second thermal insulation filling layer;

[0046] 13. The first heat-insulating filling layer; 14. The heat-resistant layer;

[0047] 15. Fixed plate; 16. Limiting platform;

[0048] 17. Fixed platform. DETAILED DESCRIPTION

[0049] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0050] Implementation Method 1

[0051] like Figure 1 , Figure 2 As shown, the present invention provides an evaporative cooler for dry dust removal, which includes a shell 8, a bellows 5 and at least one first pull rod 6. The shell 8 is a vertically arranged cylindrical shape. The shell 8 includes an inlet section 805 and a main section 806. The inlet section 805, the bellows 5 and the main section 806 are sequentially connected from top to bottom. The inlet section 805 has a first port for connecting to the flue gas outlet of the vaporization cooling flue 1. The flue gas in the vaporization cooling flue 1 enters the shell 8 through the first port. The main section 806 has a first port for evaporating and cooling the flue gas in the shell 8. a second outlet for smoke discharge; the bellows 5 is made of metal material, and the bellows 5 is sealed and connected between the inlet section 805 and the main section 806, and the bellows 5 is used to deform when the shell 8 is heated, so as to offset the thermal expansion of the shell 8 through the setting of the bellows 5; one end of the first pull rod 6 is connected to the inlet section 805, and the other end of the first pull rod 6 is connected to the main section 806, the first pull rod 6 is a telescopic structure, and / or the first pull rod 6 is connected to the inlet section 805 and / or the main section 806 through the telescopic structure, so that the first pull rod 6 meets the deformation amount of the bellows 5.

[0052] In the present invention, a bellows 5 made of metal material is arranged between the inlet section 805 and the main section 806 of the shell 8. The bellows 5 is used to absorb thermal expansion and deform when the shell 8 is heated, thereby offsetting the thermal expansion of the shell 8 and avoiding the influence of thermal expansion on other parts of the evaporative cooler; in addition, since a first pull rod 6 is connected between the inlet section 805 and the main section 806, the first pull rod 6 is a telescopic structure, and / or the first pull rod 6 is connected to the inlet section 805 and / or the main section 806 through the telescopic structure, when the bellows 5 is deformed, the first pull rod 6 can be slightly extended and retracted to meet the deformation amount of the bellows 5, and the elastic force and blind plate force generated by the bellows 5 will be absorbed by the first pull rod 6, and the bellows 5 will not generate any external force, thereby ensuring the stable operation of the equipment.

[0053] The provision of the bellows 5 and the use of metal material in the present invention can achieve complete sealing of the connection between the bellows 5 and the inlet section 805 and the main section 806, and can ensure that the bellows 5 made of metal material is not easily damaged, thereby extending the service life of the equipment, reducing the inspection and maintenance workload of the staff in harsh environments, and improving production efficiency.

[0054] The bellows 5 in the present invention is made of metal material, which has better stability than the existing high-temperature compensators made of non-metallic materials, is not easy to tear and damage, effectively extends the service life, does not require frequent replacement and maintenance by staff, and controls production costs.

[0055] Further, such as Figure 1 As shown, the first port is located at the top of the housing 8 (i.e., the top of the inlet section 805), and the second port is located at the bottom of the housing 8 (i.e., the bottom of the main section 806). The top end of the first pull rod 6 is hinged to the top outer wall of the inlet section 805, and the bottom end of the first pull rod 6 is hinged to the bottom outer wall of the main section 806. In an optional embodiment of the present invention, the first pull rod 6 can adopt a telescopic structure of an inner and outer sleeve. After the bellows 5 is deformed in the length direction, the first pull rod 6 changes its length according to the deformation of the bellows 5 to adapt to the bellows 5. In another optional embodiment of the present invention, a telescopic structure (such as an elastic member such as a spring, or connecting the first pull rod 6 with the inlet section 805 and / or the main section 806 by bolts, and reserving a certain amount of activity margin at the connection position) can also be provided at the connection position of the first pull rod 6 and the inlet section 805 and / or the main section 806, so that the first pull rod 6 can adapt to the deformation of the bellows 5. The specific telescopic structure is not an improvement of the present invention and is not limited here.

[0056] In an optional embodiment of the present invention, Figure 1 , Figure 2As shown, a first annular reinforcement member 803 is provided on the top outer wall of the inlet section 805 along its circumference, a second annular reinforcement member 804 is provided on the bottom outer wall of the main section 806 along its circumference, and the first tie rod 6 is provided vertically, the top end of the first tie rod 6 is hinged to the first reinforcement member 803, and the bottom end of the first tie rod 6 is hinged to the second reinforcement member 804. The first reinforcement member 803 and the second reinforcement member 804 are sleeved on the outer wall of the housing 8 to improve the stability of the housing 8 and provide a connection position for the first tie rod 6.

[0057] Furthermore, the number of the first tie rods 6 is at least four, and the four first tie rods 6 are spaced and evenly arranged along the circumference of the shell 8, so that the overall force of the evaporative cooler is stable.

[0058] In an optional embodiment of the present invention, Figure 1 , Figure 2 As shown, the housing 8 includes a vertically arranged straight section 801 (each position has the same diameter), the inlet section 805, the bellows 5 and at least part of the main section 806 connected to the bellows 5 are all part of the straight section 801; the evaporative cooler for dry dust removal also includes a guide part 3, the guide part 3 is a vertically arranged cylindrical shape with a top opening and a bottom opening, the cross-sectional area of ​​the guide part 3 gradually increases from top to bottom (the guide part 3 is a gradually expanding trumpet shape from bottom to top), the guide part 3 is located in the straight section 801 and close to the first port, the top opening of the guide part 3 is connected to the first port, and the bottom opening of the guide part 3 extends at least to the position opposite to the bellows 5 in the axial direction. The guide part 3 plays a role in guiding the flue gas, avoiding the generation of turbulent areas at the inlet of the flue gas, and ensuring the stability of the airflow.

[0059] Further, such as Figure 2 As shown, a certain annular gap is left between the bellows 5 and the guide part 3, and a circular fixing plate 15 is arranged along the circumference of the bellows 5 at the gap position, a first heat-insulating filling layer 13 is arranged between the outer wall surface of the fixing plate 15 and the inner wall surface of the bellows 5, and a heat-resistant layer 14 is arranged between the inner wall surface of the fixing plate 15 and the outer wall surface of the guide part 3. The fixing plate 15, the first heat-insulating filling layer 13 and the heat-resistant layer 14 cooperate to achieve the effect of heat insulation and cooling, reduce the influence of high temperature on the life of the bellows 5, and ensure the long-term normal use of the bellows 5. Among them, the fixing plate 15 is only fixed at the top or the bottom, so that the setting of the fixing plate 15 does not affect the normal deformation of the bellows 5.

[0060] Furthermore, the first heat-insulating filling layer 13 may be, but is not limited to, a heat-resistant cotton layer; the heat-resistant layer 14 may be, but is not limited to, a heat-resistant transfer layer.

[0061] Further, such as Figure 2As shown, a second thermal insulation filling layer 12 is provided between the outer wall surface of the guide portion 3 and the inner wall surface of the inlet section 805. The second thermal insulation filling layer 12 plays a role of thermal insulation and cooling the inlet section 805 of the outer shell 8, thereby avoiding the influence of high-temperature flue gas on the life of this area.

[0062] Furthermore, the second heat-insulating filling layer 12 may be, but is not limited to, a heat-resistant cotton layer.

[0063] In an optional embodiment of the present invention, Figure 1 As shown, the shell 8 includes a tapered section 802 whose cross-sectional area gradually decreases from top to bottom. The tapered section 802 is a part of the main section 806 and is located at the lower part of the main section 806. The top of the tapered section 802 is connected to the bottom of the straight section 801, and a second opening is formed at the bottom of the tapered section 802, thereby playing a role in drainage, so that the smoke after evaporative cooling can be smoothly discharged through the second opening.

[0064] In an optional embodiment of the present invention, Figure 1 As shown, when the evaporative cooler is not in operation, a second tie rod 7 for positioning the length of the bellows 5 is provided on the outside of the bellows 5, the top end of the second tie rod 7 is fixedly connected to the top of the bellows 5, and the bottom end of the second tie rod 7 is fixedly connected to the bottom of the bellows 5. The length of the bellows 5 is limited by the second tie rod 7 to avoid deformation of the bellows 5 when not in operation, which is convenient for transportation.

[0065] In an optional embodiment of the present invention, Figure 1 As shown, a plurality of manholes 10 are provided on the housing 8, and the plurality of manholes 10 can be arranged at intervals. Workers can enter the interior of the evaporative cooler through the manholes 10, and then can inspect and replace the internal equipment of the evaporative cooler.

[0066] In an optional embodiment of the present invention, Figure 1 As shown, a plurality of limit supports 9 are arranged on the outer wall of the shell 8 and in the middle or upper middle part of the shell 8, the plurality of limit supports 9 are spaced and evenly arranged along the circumference of the shell 8, the limit supports 9 can be fixedly connected with the limit platform 16 by bolts, and the limit supports 9 are used to support the shell 8 on the preset limit platform 16. And / or, a plurality of fixed supports 11 are arranged at the bottom of the shell 8, the plurality of fixed supports 11 are spaced and evenly arranged along the circumference of the shell 8, and the fixed supports 11 are fixedly connected with the fixed platform 17 by bolts, and the fixed supports 11 are used to support the shell 8 on the preset fixed platform 17. Among them, the limit platform 16 and the fixed platform 17 are both fixed positions preset at the production site to fix the evaporative cooler.

[0067] The working process of the present invention is as follows: during the converter smelting process, the converter flue gas is captured by a movable smoke hood, and the captured converter flue gas is cooled by the vaporization cooling flue and then enters the evaporative cooler of the present invention. In the shell 8 of the evaporative cooler, high-pressure water is sprayed through an atomizing spray gun (a plurality of atomizing spray guns are provided on the shell 8 of the evaporative cooler, which is a conventional technology and is not reflected in the present invention) to achieve cooling, tempering, rough dust removal and other treatments of the flue gas. In this process, due to the excessively high temperature of the flue gas, the shell 8 of the evaporative cooler will produce thermal expansion, and the bellows 5 can absorb the thermal expansion of the shell 8, and the deformation of the bellows 5 will produce a large elastic force and blind plate force, all of which will be absorbed by the first pull rod 6, and will not generate forces on external equipment, so that the evaporative cooler of the present invention does not need to be additionally provided with other compensators at the inlet of the evaporative cooler, and can overcome the thermal expansion caused by the high temperature by itself.

[0068] The characteristics and advantages of the evaporative cooler for dry dust removal of the present invention are:

[0069] 1. In the evaporative cooler for dry dust removal, the metal bellows 5 used for heat compensation is integrated with the outer shell 8 of the evaporative cooler, and there is no need to set an additional non-metallic compensator at the inlet of the evaporative cooler. The length of the straight section 801 of the evaporative cooler can be effectively increased, and the residence time of the flue gas in the outer shell 8 of the evaporative cooler can be extended, which effectively improves the cooling and dust removal effect of the evaporative cooler on the flue gas.

[0070] 2. The bellows 5 in the evaporative cooler for dry dust removal is made of metal material, which can be completely sealed compared with non-metal compensators, and can avoid dangerous situations such as gas leakage.

[0071] 3. The evaporative cooler for dry dust removal has good stability, and the bellows 5 is made of metal material, which has high reliability and is not easy to damage, thereby increasing the service life of the equipment and reducing the workload of inspection and maintenance in harsh environments.

[0072] Fourth, in the evaporative cooler for dry dust removal, a guide part 3 is built-in near the inlet of the evaporative cooler, which can guide the incoming flue gas and avoid the generation of a turbulent area at the inlet of the evaporative cooler.

[0073] 5. In the evaporative cooler for dry dust removal, a fixing plate 15 and a first heat-insulating filling layer 13 and a heat-resistant layer 14 located on both sides of the fixing plate 15 are provided on the inner side of the bellows 5, which effectively play a role of heat insulation and cooling, avoid the influence of high temperature on the bellows 5, and ensure that the bellows 5 can be used for a long time and stably.

[0074] 6. In the evaporative cooler for dry dust removal, when the bellows 5 is deformed, the first pull rod 6 can achieve a small extension and contraction to meet the deformation of the bellows 5, and the elastic force and blind plate force generated by the bellows 5 will be absorbed by the first pull rod 6. The bellows 5 will not generate any external force, thereby ensuring the stable operation of the equipment.

[0075] Implementation Method 2

[0076] The present invention provides a converter flue gas treatment device, which includes the above-mentioned evaporative cooler for dry dust removal and a vaporizing cooling flue 1, the inlet of the vaporizing cooling flue 1 is connected to a movable smoke hood (not shown), and the outlet of the vaporizing cooling flue 1 is connected to the evaporative cooler for dry dust removal.

[0077] The converter flue gas treatment device of the present invention has the characteristics and advantages of the above-mentioned evaporative cooler for dry dust removal, which will not be described in detail here.

[0078] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An evaporative cooler for dry dust removal, characterized in that: The evaporative cooler for dry dust removal comprises: A shell, the shell comprising an inlet section and a main body section, the inlet section having a first port for connecting to a smoke outlet of a vaporization cooling flue, the smoke in the vaporization cooling flue entering the shell through the first port, and the main body section having a second port for discharging smoke after vaporization cooling in the shell; A bellows, the bellows is made of metal material, the bellows is connected between the inlet section and the main section, and the bellows is used to deform when the shell is heated to offset the thermal expansion of the shell; At least one first tie rod, both ends of which are respectively connected to the entrance section and the main section, the first tie rod is a telescopic structure, and / or the first tie rod is connected to the entrance section and / or the main section through a telescopic structure so that the first tie rod meets the deformation amount of the bellows.

2. The evaporative cooler for dry dust removal according to claim 1, characterized in that: The shell is vertically arranged in a cylindrical shape, the inlet section, the bellows and the main section are sequentially connected from top to bottom, and the first port and the second port are respectively located at the top and the bottom of the shell; The top end of the first pull rod is hinged to the top outer wall of the inlet section, and the bottom end of the first pull rod is hinged to the bottom outer wall of the main body section.

3. The evaporative cooler for dry dust removal according to claim 2, characterized in that: A first annular reinforcement is arranged on the top outer wall of the entrance section along its circumference, and a second annular reinforcement is arranged on the bottom outer wall of the main body section along its circumference. The top end of the first pull rod is hinged to the first reinforcement, and the bottom end of the first pull rod is hinged to the second reinforcement.

4. The evaporative cooler for dry dust removal according to any one of claims 1 to 3, characterized in that: The number of the first tie rods is at least four, and the four first tie rods are arranged at intervals along the circumference of the housing.

5. The evaporative cooler for dry dust removal according to claim 1, characterized in that: The housing comprises a vertically arranged straight section, and the inlet section, the bellows and at least a portion of the main section connected to the bellows are all part of the straight section; The evaporative cooler for dry dust removal also includes a guide portion, which is in the shape of a cylinder with a top opening and a bottom opening vertically arranged, and the cross-sectional area of ​​the guide portion gradually increases from top to bottom. The guide portion is located in the straight cylinder section and close to the first port. The top opening of the guide portion is connected to the first port, and the bottom opening of the guide portion extends at least to a position opposite to the bellows in the axial direction.

6. The evaporative cooler for dry dust removal according to claim 5, characterized in that: An annular fixing plate is arranged between the bellows and the guide part along the circumference of the bellows, a first heat insulating filling layer is arranged between the outer wall surface of the fixing plate and the inner wall surface of the bellows, and a heat-resistant layer is arranged between the inner wall surface of the fixing plate and the outer wall surface of the guide part.

7. The evaporative cooler for dry dust removal according to claim 5, characterized in that: A second heat-insulating filling layer is provided between the outer wall surface of the guide portion and the inner wall surface of the inlet section.

8. The evaporative cooler for dry dust removal according to claim 5, characterized in that: The shell includes a tapered section with a gradually decreasing cross-sectional area from top to bottom. The tapered section is a part of the main section and is located at the lower part of the main section. The top of the tapered section is connected to the bottom of the straight tube section, and the bottom of the tapered section forms the second opening.

9. The evaporative cooler for dry dust removal according to claim 1, characterized in that: In a non-working state, a second pull rod for positioning the length of the bellows is arranged on the outer side of the bellows, and the top and bottom ends of the second pull rod are respectively connected to the top and bottom of the bellows.

10. The evaporative cooler for dry dust removal according to claim 1, characterized in that: A limit support is provided on the outer wall of the shell and located in the middle or upper middle part of the shell, and the limit support is used to support the shell on a preset limit platform; And / or, a fixing support is provided at the bottom of the shell, and the fixing support is used to support the shell on a preset fixing platform.

11. The evaporative cooler for dry dust removal according to claim 10, characterized in that: There are multiple limit supports, which are arranged at intervals along the circumference of the shell, and the limit supports are fixedly connected to the limit platform by bolts; And / or, there are multiple fixed supports, the multiple fixed supports are arranged at intervals along the circumference of the shell, and the fixed supports are fixedly connected to the fixed platform by bolts.

12. A converter flue gas treatment device, characterized in that: The converter flue gas treatment device comprises: The evaporative cooler for dry dust removal according to any one of claims 1 to 11; The vaporization cooling flue has an inlet connected to a movable smoke hood, and an outlet connected to the evaporative cooler for dry dust removal.

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