Industrial flue gas waste heat recycling equipment

Abstract

The invention relates to the technical field of flue gas waste heat recovery, in particular to industrial flue gas waste heat recycling equipment which comprises a base, a shell, first fixing plates and a distribution bin, the shell is fixedly installed above the base, the first fixing plates are fixedly installed at the two ends of the shell, and the distribution bin is fixedly installed on the base. The distribution bin is fixedly installed at the end, away from the shell, of the first fixing plate, and a medium inlet is fixedly formed in the surface of the distribution bin on one side. According to the industrial flue gas waste heat recycling equipment, part of flue gas can be baffled and guided by the flow guide part through the baffling assembly to move in the direction of the condensation pipe set; the other part of the flue gas passes through the flow guide groove and moves towards the inner wall of the shell under the guide of the other side of the flow guide part, so that the inner wall of the shell is continuously heated, and the situation that the temperature of the inner wall of the shell is lower than the condensation point of sulfuric acid steam is avoided; and liquid sulfuric acid is formed on the surface.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas waste heat recovery, and in particular to industrial flue gas waste heat recovery and utilization equipment. Background Art

[0002] Industrial waste gas refers to the general term for various pollutant gases discharged into the air during fuel combustion and production processes within the enterprise's factory area. If the flue gas is discharged directly, it will not only waste the heat energy in it, but also have an impact on the environment. Therefore, industrial flue gas is usually recovered and purified before being discharged.

[0003] The traditional way to recover waste heat is to utilize it through heat exchange equipment. However, during the recovery process, the high-temperature flue gas medium has a high sulfur content, which usually produces sulfur oxides, which combine with water vapor to form sulfuric acid vapor. When the tube wall temperature of the heat exchange equipment is lower than the condensation point of sulfuric acid vapor, liquid sulfuric acid will form on its surface, causing acid corrosion to the tube wall. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an industrial flue gas waste heat recovery and utilization device, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an industrial flue gas waste heat recovery and utilization device, including a base, a shell, a first fixed plate and a distribution bin, the shell is fixedly installed on the top of the base, the first fixed plate is fixedly installed on both ends of the shell, the distribution bin is fixedly installed on the end of the first fixed plate away from the shell, a medium inlet is fixedly installed on the surface of the distribution bin on one side, and a medium outlet is fixedly installed on the surface of the distribution bin on the side away from the medium inlet, a condenser tube group is fixedly installed inside the shell, a fin assembly is arranged on the condenser tube group, the fin assembly is used to increase the heat absorption area, and a baffle assembly is arranged on the condenser tube group, the baffle assembly is used to improve the heat exchange effect.

[0006] Optionally, the fin assembly includes a partition space, the partition space is opened inside the shell, an inspection door is movably installed in the partition space, an inspection port is opened on the surface of the shell, and the inside and outside of the shell are separated by the inspection door;

[0007] A flue gas inlet is fixedly installed at the bottom of the shell, a heat conducting member is fixedly installed on both upper and lower sides of the outer surface of the condensing tube group, a first elastic column is fixedly installed on the surface of the heat conducting member, a fin is fixedly installed at one end of the first elastic column away from the heat conducting member, and a touch plate is fixedly installed on both sides of the fin;

[0008] A servo motor is fixedly mounted on both sides of one end of the shell, a rotating shaft is fixedly mounted on the output shaft of the servo motor, a spacer is fixedly sleeved on the outer surface of the rotating shaft, and the spacer is located between the two touch plates.

[0009] Optionally, the baffle assembly includes a baffle module and a cleaning module, the baffle module includes an upper baffle plate movably mounted on the upper half of the condenser tube group, and a lower baffle plate movably mounted on the lower half of the condenser tube group;

[0010] A flow guide is fixedly mounted on one side of the upper baffle plate and the lower baffle plate facing the smoke inlet. The flow guide is tilted toward the inside of the shell, and a flow guide groove is provided on the surface of the flow guide.

[0011] Optionally, the cleaning module includes a dust guide fixedly mounted on the surface of the upper baffle plate, the surfaces of the upper baffle plate and the lower baffle plate are fixedly mounted with second elastic columns, and the ends of the two second elastic columns away from the upper baffle plate and the lower baffle plate are fixedly mounted with second fixing plates, and the second fixing plates are fixedly connected to the inner wall of the shell;

[0012] The surfaces of the upper baffle plate and the lower baffle plate are fixedly connected with thin cables, and the ends of the two groups of thin cables away from the upper baffle plate and the lower baffle plate are fixedly connected with a gathering wheel, and the gathering wheel is fixedly sleeved on the outer surface of the servo motor;

[0013] A third fixed plate is fixedly installed on one side of the upper deflector and the lower deflector away from the guide member, a rotating rod is movably installed on the surface of the third fixed plate, an abutment wheel is fixedly installed on the top of the rotating rod, the abutment wheel abuts against the inner wall of the shell, and a trigger is fixedly sleeved on the outer surface of the rotating rod.

[0014] Optionally, a through groove is provided inside the shell, the through groove is located on a side of the shell away from the smoke inlet, the inner cavity of the shell is connected to the interlayer space through the through groove, and a smoke outlet is fixedly installed at the bottom of the shell.

[0015] Optionally, the inner end of the smoke inlet penetrates the interlayer space and extends to the inner cavity of the shell, and the inner end of the smoke outlet is communicated with the interlayer space.

[0016] Optionally, the two fin assemblies are circular in shape and fit closely to the heat conducting member.

[0017] Optionally, the upper and lower fins form a ring, and the three rings form a fin group. Three fin groups are evenly distributed on the outer surface of the condenser tube group, and the upper baffle and the lower baffle are located between the fin groups.

[0018] The present invention provides an industrial flue gas waste heat recovery and utilization device, which has the following beneficial effects:

[0019] 1. The industrial flue gas waste heat recovery and utilization equipment can make the spacer wheel in a vertical state through the fin assembly, so that the fin stretches the first elastic column and makes the fin away from the condenser tube group, thereby avoiding interference with the condenser tube group, making it convenient for users to clean the fins. At the same time, during the process of the spacer wheel rotating several circles, the fin will continuously reciprocate up and down under the action of the elastic force provided by the first elastic column, and will contact the heat conductor during the movement, thereby causing the fin to vibrate, making it convenient to shake off the dust in the narrow gap between the fins, further reducing the difficulty of cleaning.

[0020] 2. The industrial flue gas waste heat recovery and utilization equipment can use the deflection component to deflect and guide part of the flue gas by the guide member and move it toward the condenser tube group, thereby increasing the contact time between the flue gas and the condenser tube group and improving the flue gas absorption efficiency. Another part of the flue gas will pass through the guide groove and move toward the inner wall of the shell under the guidance of the other side of the guide member, thereby achieving continuous heating of the inner wall of the shell and avoiding the problem that the temperature of the inner wall of the shell is lower than the condensation point of sulfuric acid vapor and liquid sulfuric acid is formed on its surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 The structure of the present invention is shown in FIG. Figure 3 ;

[0024] Figure 4 The structure of the present invention is shown in FIG. Figure 4 ;

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0026] Figure 6 The schematic diagram of the positional relationship between the fin assembly and the baffle assembly of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 7 The schematic diagram of the positional relationship between the fin assembly and the baffle assembly of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 8 It is a partial three-dimensional exploded structural schematic diagram of the fin assembly of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the baffle module and the cleaning module of the present invention;

[0030] Fig.10 It is a schematic structural diagram of the positional relationship between the smoke inlet, smoke outlet and shell of the present invention.

[0031] In the figure: 1. base; 11. shell; 12. first fixed plate; 13. distribution chamber; 14. medium inlet; 15. medium outlet; 16. condenser tube group; 2. interlayer space; 21. inspection door; 22. flue gas inlet; 23. heat conducting member; 24. first elastic column; 25. fin; 26. touch plate; 27. servo motor; 28. rotating shaft; 29. ​​spacer wheel; 210. inspection port; 3. upper baffle plate; 31. lower baffle plate; 32. guide member; 33. guide groove; 34. dust guide member; 35. second fixed plate; 36. second elastic column; 37. gathering wheel; 38. thin rope; 39. third fixed plate; 310. rotating rod; 311. abutting wheel; 312. touch member; 4. through groove; 41. flue gas outlet. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Example 1: Please refer to Figures 1 to 8 The present invention provides a technical solution: an industrial flue gas waste heat recovery and utilization device, comprising a base 1, a shell 11, a first fixed plate 12 and a distribution bin 13, the shell 11 is fixedly installed above the base 1, the first fixed plate 12 is fixedly installed at both ends of the shell 11, the distribution bin 13 is fixedly installed at one end of the first fixed plate 12 away from the shell 11, a medium inlet 14 is fixedly installed on the surface of the distribution bin 13 on one side, and a medium outlet 15 is fixedly installed on the surface of the distribution bin 13 on the side away from the medium inlet 14, a condenser tube group 16 is fixedly installed inside the shell 11, a fin assembly is arranged on the condenser tube group 16, the fin assembly is used to increase the heat absorption area, and a baffle assembly is arranged on the condenser tube group 16, the baffle assembly is used to improve the heat exchange effect.

[0034] The fin assembly includes a compartment space 2, which is opened inside the shell 11, and an inspection door 21 is movably installed in the compartment space 2. An inspection port 210 is opened on the surface of the shell 11, and the inside and the outside of the shell 11 are separated by the inspection door 21.

[0035] A flue gas inlet 22 is fixedly installed at the bottom of the shell 11, and heat-conducting members 23 are fixedly installed on both upper and lower sides of the outer surface of the condensing tube group 16. A first elastic column 24 is fixedly installed on the surface of the heat-conducting member 23, and a fin 25 is fixedly installed at one end of the first elastic column 24 away from the heat-conducting member 23. Touch plates 26 are fixedly installed on both sides of the fin 25.

[0036] The combined shape of the two fins 25 is circular and fits the heat conducting member 23;

[0037] A servo motor 27 is fixedly mounted on both sides of one end of the housing 11 . A rotating shaft 28 is fixedly mounted on the output shaft of the servo motor 27 . A spacer wheel 29 is fixedly sleeved on the outer surface of the rotating shaft 28 . The spacer wheel 29 is located between the two touch plates 26 .

[0038] Specifically, when using the device, the smoke needs to be first introduced into the inner cavity of the shell 11 from the smoke inlet 22, and the cooling medium is introduced through the medium inlet 14, so that the cooling medium enters the distribution bin 13 and is distributed to the condenser group 16, and then circulates through the condenser group 16 and the medium outlet 15, so as to recover the waste heat of the smoke in the shell 11;

[0039] In the waste heat recovery process, the fins 25 increase the flue gas contact area, so that the heat absorbed by the fins 25 is transferred to the condenser tube group 16 and taken away by the cooling medium, thereby improving the heat absorption efficiency. However, the condenser tube group 16 is arranged closely, and the flue gas contains a large amount of smoke and dust, and often contains highly corrosive sulfide media. When the equipment is operated for a long time, the smoke and dust will adhere to the surface of the condenser tube group 16 and gather in the narrow position between the fins 25, which is difficult to clean, resulting in the accumulation of thicker and thicker scale, making the flue gas side resistance of the waste heat recovery equipment far exceed the design value, reducing the heat exchange efficiency of the equipment, and the equipment is difficult to disassemble and assemble during cleaning, which will also reduce the maintenance efficiency;

[0040] In the present invention, when the inside of the housing 11 needs to be cleaned, after the equipment stops running, the inspection door 21 can be rotated to no longer cover the inspection port 210, thereby exposing the condenser tube group 16, without complicated disassembly steps, thereby improving cleaning efficiency;

[0041] Furthermore, by starting the servo motor 27, the rotating shaft 28 can be driven to rotate, so that the rotating shaft 28 drives the spacer 29 to rotate several circles and then stop, and the spacer 29 is in a vertical state compared to the initial horizontal state. When the spacer 29 is in the vertical state, the touch plate 26 will be driven by the spacer 29, so that the fin 25 stretches the first elastic column 24 and stays away from the condenser tube group 16, thereby avoiding interference with the condenser tube group 16, and facilitating the user to clean the fin 25;

[0042] Furthermore, when the spacer wheel 29 rotates several times, the fins 25 will continuously reciprocate up and down under the action of the elastic force provided by the first elastic column 24, and will contact the heat conducting member 23 during the movement, which will cause the fins 25 to vibrate, making it easier to shake off the dust in the narrow gaps between the fins 25, further reducing the difficulty of cleaning;

[0043] It should be noted that a sealing skirt needs to be provided at the edge of the inspection door 21 to ensure the sealing of the equipment and prevent smoke from escaping through the interlayer space 2 or the inspection port 210 .

[0044] Example 2: Please refer to Figures 3 to 9 The baffle assembly includes a baffle module and a cleaning module. The baffle module includes an upper baffle plate 3 movably mounted on the upper half of the condenser tube group 16, and a lower baffle plate 31 movably mounted on the lower half of the condenser tube group 16;

[0045] A guide member 32 is fixedly mounted on one side of the upper baffle plate 3 and the lower baffle plate 31 facing the smoke inlet 22 . The guide member 32 is tilted toward the inside of the shell 11 , and a guide groove 33 is formed on the surface of the guide member 32 .

[0046] The cleaning module includes a dust guide 34 fixedly mounted on the surface of the upper baffle plate 3, and second elastic columns 36 are fixedly mounted on the surfaces of the upper baffle plate 3 and the lower baffle plate 31. Second fixing plates 35 are fixedly mounted on the ends of the two second elastic columns 36 away from the upper baffle plate 3 and the lower baffle plate 31, and the second fixing plates 35 are fixedly connected to the inner wall of the housing 11;

[0047] The surfaces of the upper baffle plate 3 and the lower baffle plate 31 are fixedly connected with thin cables 38, and the ends of the two sets of thin cables 38 away from the upper baffle plate 3 and the lower baffle plate 31 are fixedly connected with a gathering wheel 37, and the gathering wheel 37 is fixedly sleeved on the outer surface of the servo motor 27;

[0048] A third fixing plate 39 is fixedly installed on one side of the upper baffle plate 3 and the lower baffle plate 31 away from the guide member 32. A rotating rod 310 is movably installed on the surface of the third fixing plate 39. An abutting wheel 311 is fixedly installed on the top of the rotating rod 310. The abutting wheel 311 abuts against the inner wall of the housing 11. A trigger 312 is fixedly sleeved on the outer surface of the rotating rod 310.

[0049] The upper and lower fins 25 form a ring, and the three rings form a fin group. The outer surface of the condenser tube group 16 is evenly distributed with three fin groups, and the upper baffle plate 3 and the lower baffle plate 31 are located between the fin groups.

[0050] On the basis of Example 1, when the flue gas enters the housing 11 and flows toward the medium outlet 15, the upper baffle 3 and the lower baffle 31 block the flue gas, which can cause the flue gas to reflux, thereby increasing the flue gas retention time, and then allowing the condenser tube group 16 to have sufficient time to absorb heat, thereby improving the heat absorption effect;

[0051] Furthermore, when the flue gas contacts the guide member 32, part of the flue gas will be deflected and guided by the guide member 32 and move toward the direction of the condenser tube group 16, thereby increasing the contact time between the flue gas and the condenser tube group 16, thereby improving the flue gas absorption efficiency; and part of the flue gas will pass through the guide groove 33 and move toward the inner wall of the shell 11 under the guidance of the other side of the guide member 32, thereby achieving continuous heating of the inner wall of the shell 11, thereby avoiding the problem that the temperature of the inner wall of the shell 11 is lower than the condensation point of the sulfuric acid vapor and liquid sulfuric acid is formed on its surface;

[0052] Furthermore, in Example 1, during the maintenance and cleaning of the equipment, when the rotating shaft 28 drives the spacer wheel 29 to rotate several times, the gathering wheel 37 will also rotate with the rotating shaft 28. During the rotation of the gathering wheel 37, the thin rope 38 will be gathered. At this time, the thin rope 38 will pull the upper baffle plate 3 or the lower baffle plate 31, so that the upper baffle plate 3 or the lower baffle plate 31 moves on the surface of the condenser tube group 16, thereby cleaning the dust on the inner wall surface of the condenser tube group 16 and the shell 11, and gathering the cleaned dust to improve the cleaning efficiency;

[0053] Under the action of the dust guide 34, the dust on the inner wall of the shell 11 can be gathered between the dust guide 34 and the upper baffle plate 3, and guided out from both sides of the dust guide 34, so as to prevent the dust on the inner wall of the clean shell 11 from falling on the surface of the condenser tube group 16 when the upper baffle plate 3 is above the condenser tube group 16;

[0054] More specifically, during the movement of the upper baffle plate 3 and the lower baffle plate 31, since the abutment wheel 311 abuts against the inner wall of the shell 11, the friction between the two can be used to rotate the abutment wheel 311, thereby driving the rotating rod 310 to rotate, and the rotating rod 310 is used to drive the trigger member 312 to rotate, so that the trigger member 312 contacts the upper baffle plate 3 or the lower baffle plate 31 during the rotation, so that the surface of the upper baffle plate 3 and the lower baffle plate 31 vibrates slightly, and then the dust cleaned from the upper baffle plate 3 and the lower baffle plate 31 is shaken off to the bottom of the inner cavity of the shell 11, which is convenient for cleaning.

[0055] Example 3: Please refer to Figure 3 and Fig.10 A through groove 4 is provided inside the shell 11, and the through groove 4 is located on the side of the shell 11 away from the smoke inlet 22. The inner cavity of the shell 11 is connected to the interlayer space 2 through the through groove 4, and a smoke outlet 41 is fixedly installed at the bottom of the shell 11.

[0056] The inner end of the smoke inlet 22 passes through the interlayer space 2 and extends to the inner cavity of the shell 11 , and the inner end of the smoke outlet 41 is communicated with the interlayer space 2 .

[0057] On the basis of Example 1, when the flue gas is introduced into the inner cavity of the shell 11 from the flue gas inlet 22, it will move in the direction of the medium outlet 15, and enter the interlayer space 2 from the through groove 4, and then move from the interlayer space 2 to the flue gas outlet 41 for discharge. When the flue gas is in the interlayer space 2, the flue gas with the remaining heat will form a gas insulation layer in the interlayer space 2, further preventing the temperature of the inner wall of the shell 11 from being lower than the condensation point of sulfuric acid vapor, preventing the formation of liquid sulfuric acid, and causing acid dew corrosion to the inner wall of the shell 11.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial flue gas waste heat recovery and utilization device, comprising a base (1), a shell (11), a first fixed plate (12) and a distribution bin (13), wherein the shell (11) is fixedly mounted above the base (1), the first fixed plate (12) is fixedly mounted at both ends of the shell (11), the distribution bin (13) is fixedly mounted at one end of the first fixed plate (12) away from the shell (11), a medium inlet (14) is fixedly mounted on the surface of the distribution bin (13) on one side, a medium outlet (15) is fixedly mounted on the surface of the distribution bin (13) on the side away from the medium inlet (14), and a condenser pipe group (16) is fixedly mounted inside the shell (11), characterized in that: The condenser tube group (16) is provided with a fin assembly, the fin assembly is used to increase the heat absorption area, and the condenser tube group (16) is provided with a baffle assembly, the baffle assembly is used to improve the heat exchange effect.

2. The industrial flue gas waste heat recovery and utilization equipment according to claim 1 is characterized in that: The fin assembly comprises a partition space (2), the partition space (2) is opened inside the shell (11), an inspection door (21) is movably installed in the partition space (2), an inspection port (210) is opened on the surface of the shell (11), and the inside and outside of the shell (11) are separated by the inspection door (21); A flue gas inlet (22) is fixedly mounted on the bottom of the shell (11), a heat conducting member (23) is fixedly mounted on both upper and lower sides of the outer surface of the condensing tube group (16), a first elastic column (24) is fixedly mounted on the surface of the heat conducting member (23), a fin (25) is fixedly mounted on one end of the first elastic column (24) away from the heat conducting member (23), and a touch plate (26) is fixedly mounted on both sides of the fin (25); A servo motor (27) is fixedly mounted on both sides of one end of the housing (11); a rotating shaft (28) is fixedly mounted on the output shaft of the servo motor (27); a spacer wheel (29) is fixedly sleeved on the outer surface of the rotating shaft (28); and the spacer wheel (29) is located between the two touch plates (26).

3. The industrial flue gas waste heat recovery and utilization equipment according to claim 2 is characterized in that: The baffle assembly comprises a baffle module and a cleaning module, the baffle module comprises an upper baffle plate (3) movably mounted on the upper half of the condenser tube group (16), and a lower baffle plate (31) movably mounted on the lower half of the condenser tube group (16); A flow guide (32) is fixedly mounted on one side of the upper baffle plate (3) and the lower baffle plate (31) facing the smoke inlet (22); the flow guide (32) is arranged to be inclined toward the inside of the shell (11); and a flow guide groove (33) is provided on the surface of the flow guide (32).

4. The industrial flue gas waste heat recovery and utilization equipment according to claim 3 is characterized in that: The cleaning module comprises a dust guide (34) fixedly mounted on the surface of the upper baffle plate (3), second elastic columns (36) fixedly mounted on the surfaces of the upper baffle plate (3) and the lower baffle plate (31), second fixing plates (35) fixedly mounted on the ends of the two second elastic columns (36) away from the upper baffle plate (3) and the lower baffle plate (31), and the second fixing plates (35) are fixedly connected to the inner wall of the shell (11); The surfaces of the upper baffle plate (3) and the lower baffle plate (31) are both fixedly connected with thin cables (38); one end of the two groups of thin cables (38) away from the upper baffle plate (3) and the lower baffle plate (31) is both fixedly connected with a gathering wheel (37); and the gathering wheel (37) is fixedly sleeved on the outer surface of the servo motor (27); A third fixed plate (39) is fixedly mounted on one side of the upper baffle plate (3) and the lower baffle plate (31) away from the flow guide member (32); a rotating rod (310) is movably mounted on the surface of the third fixed plate (39); an abutment wheel (311) is fixedly mounted on the top of the rotating rod (310); the abutment wheel (311) abuts against the inner wall of the housing (11); and a trigger member (312) is fixedly sleeved on the outer surface of the rotating rod (310).

5. The industrial flue gas waste heat recovery and utilization equipment according to claim 4 is characterized in that: A through groove (4) is provided inside the shell (11), the through groove (4) is located on a side of the shell (11) away from the smoke inlet (22), the inner cavity of the shell (11) is connected to the interlayer space (2) via the through groove (4), and a smoke outlet (41) is fixedly mounted on the bottom of the shell (11).

6. The industrial flue gas waste heat recovery and utilization equipment according to claim 5 is characterized in that: The inner end of the smoke inlet (22) penetrates the interlayer space (2) and extends to the inner cavity of the shell (11), and the inner end of the smoke outlet (41) is in communication with the interlayer space (2).

7. The industrial flue gas waste heat recovery and utilization equipment according to claim 6 is characterized in that: The combined shape of the two fins (25) is circular and fits the heat conducting member (23).

8. The industrial flue gas waste heat recovery and utilization equipment according to claim 7 is characterized in that: The upper and lower fins (25) form a circular ring, and the three circular rings form a fin group. The outer surface of the condenser tube group (16) is evenly distributed with three fin groups, and the upper baffle plate (3) and the lower baffle plate (31) are located between the fin groups.

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