Flue gas acid-making waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat recovery, and discloses a flue gas acid making waste heat recovery device which comprises a heat absorption tank, the inner wall of the heat absorption tank is rotationally connected with a rotating ring through a bearing, a dust removal pipe is rotationally connected between the left inner side wall and the right inner side wall of the heat absorption tank through a bearing, and the outer surface of the dust removal pipe fixedly communicates with two L-shaped pipes. And the other ends of the two L-shaped pipes are fixedly connected with the rotating ring, and the outer surfaces of the two L-shaped pipes and the dust removal pipe fixedly communicate with a plurality of high-pressure nozzles. According to the flue gas acid making waste heat recovery device, by arranging the vibration motor, the purpose of high-frequency vibration of the heat absorption tank can be achieved, dust attached to the surface of the heat exchange pipe and dust on the inner wall of the heat absorption tank can be shaken off and separated, and the dust removal pipe and the L-shaped pipe are matched for rotary air injection; dust on the surface of the heat exchange tube and the inner wall of the heat absorption tank can be thoroughly removed, the service life of the heat exchange tube is effectively prolonged, and the heat conduction effect of the heat exchange tube is improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste heat recovery, and specifically to a waste heat recovery device for flue gas acid production. Background Art

[0002] Waste heat recovery refers to the waste heat generated in the industrial production process, which is recovered and reused in a certain way to achieve the purpose of energy saving. The exhaust temperature of industrial heating furnaces is as high as 200~300℃. The flue gas temperature can be lowered by a heat exchanger before being discharged, and the heat taken out can be used to heat the air.

[0003] The existing patent (publication number: CN214384460U) discloses a flue gas waste heat boiler system for preparing sulfuric acid, which relates to the field of flue gas waste heat utilization technology, and includes a furnace body, a heat exchange tube group is installed in the furnace body, condensed water is introduced into the heat exchange tube group, and high-temperature sulfur dioxide is introduced into the furnace body; a steam drum is arranged on the top of the furnace body, and the heat exchange tube group and the steam drum are connected through a pipeline; a steam turbine is connected to the steam drum, and a transmission motor is arranged at the output shaft of the steam turbine, and the output shaft of the steam turbine is connected to the rotating shaft of the transmission motor. This application has the function of generating steam through flue gas heat exchange, driving the steam turbine to work through steam, and the operation of the steam turbine can drive the transmission motor to rotate, and the transmission motor can be connected to the fan and drive the fan to rotate, so as to achieve the purpose of utilizing the waste heat of sulfur dioxide to generate electricity, thereby achieving the effect of saving electricity.

[0004] During the use of the above-mentioned hot boiler system, a heat exchange tube group is installed in the furnace body, condensed water is passed into the heat exchange tube group, and high-temperature sulfur dioxide is passed into the furnace body. When the sulfur dioxide flue gas comes into contact with the heat exchange tube group, its surface is easily covered with dust, which not only easily corrodes the tube group and reduces its service life, but also affects the heat absorption effect of the tube group and reduces the recovery efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a flue gas acid production waste heat recovery device with advantages such as dust removal, which solves the problem of easy corrosion of the tube group, reducing the service life, and affecting the heat absorption effect of the tube group, thereby reducing the recovery efficiency.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a waste heat recovery device for flue gas acid production, comprising a heat absorption tank, the inner wall of the heat absorption tank is rotatably connected to a rotating ring through a bearing, a dust removal pipe is rotatably connected to the left and right inner walls of the heat absorption tank through a bearing, the outer surface of the dust removal pipe is fixedly connected with two L-shaped pipes, the other ends of the two L-shaped pipes are fixedly connected to the rotating ring, the outer surfaces of the two L-shaped pipes and the dust removal pipe are fixedly connected with multiple high-pressure nozzles, the right side surface of the outer wall of one end of the dust removal pipe that passes through the heat absorption tank is rotatably connected to an air collecting box through a bearing, the right side surface of the air collecting box is fixedly connected to an air intake pipe, the outer surface of the air intake pipe is fixedly connected to a first flange, two vibration motors are fixedly installed on the outer surface of the heat absorption tank, a heat exchange pipe is installed inside the heat absorption tank, both ends of the heat exchange pipe are fixedly embedded in the heat absorption tank, and the heat exchange pipe is spring-shaped.

[0007] Through the above scheme, by setting up a vibration motor, the purpose of making the heat absorption tank vibrate at high frequency can be achieved, and the dust attached to the surface of the heat exchange tube and the dust on the inner wall of the heat absorption tank can be shaken off and separated, and in conjunction with the rotating jet of the dust removal pipe and the L-shaped pipe, the dust on the surface of the heat exchange tube and the inner wall of the heat absorption tank can be thoroughly cleared, effectively extending the service life of the heat exchange tube and improving the thermal conductivity of the heat exchange tube.

[0008] Furthermore, the bottom end of the heat absorbing tank is fixedly connected to a smoke inlet pipe.

[0009] Through the above solution, by setting the smoke inlet pipe, external smoke can enter the interior of the heat absorption tank.

[0010] Furthermore, the top end of the heat absorbing tank is fixedly connected to a smoke outlet pipe.

[0011] Through the above scheme, by setting the smoke outlet pipe, it is possible to exhaust the smoke inside the heat absorption tank.

[0012] Furthermore, a second flange is fixedly mounted on the bottom end of the smoke inlet pipe.

[0013] Through the above solution, by providing the second flange, it is convenient for the user to connect the smoke inlet pipe with the external smoke duct.

[0014] Furthermore, a third flange is fixedly mounted on the top end of the smoke outlet pipe.

[0015] Through the above solution, by providing the third flange, it is convenient for the user to connect the smoke outlet pipe with the external smoke duct.

[0016] Furthermore, fourth flanges are installed at both ends of the heat exchange tube.

[0017] Through the above solution, by setting the heat exchange tube, it is convenient for the user to connect it with an external water pump.

[0018] Furthermore, two support frames are fixedly connected to the outer surface of the heat absorbing tank.

[0019] Through the above scheme, the purpose of supporting the heat absorption tank can be achieved through the support frame.

[0020] Furthermore, the right side of the heat absorption tank is rotatably connected to a power shaft through a bearing, and the outer surfaces of the power shaft and the dust removal pipe are fixedly connected to gears, the two gears are meshingly connected, and the right end of the power shaft is fixedly connected to the external motor output end.

[0021] Through the above solution, by setting the gears, power can be provided for the rotation of the dust suction pipe.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The flue gas acid-making waste heat recovery device can achieve the purpose of making the heat absorption tank vibrate at high frequency by arranging a vibration motor, so that the dust attached to the surface of the heat exchange tube and the dust on the inner wall of the heat absorption tank can be shaken off and separated, and the dust on the surface of the heat exchange tube and the inner wall of the heat absorption tank can be completely removed by cooperating with the rotary jet of the dust removal pipe and the L-shaped pipe, thereby effectively extending the service life of the heat exchange tube and improving the thermal conductivity effect of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A cross-sectional view of the top view of the heat absorbing tank of this application;

[0025] Figure 2 This is the left side view of the heat absorbing tank for this application;

[0026] Figure 3 This is the right side view of the heat absorbing tank for this application;

[0027] Figure 4 This is a sectional view of the left side view of the heat absorption tank of this application.

[0028] In the figure:

[0029] 1. Heat absorption tank; 2. Rotating ring; 3. Dust removal pipe; 4. L-shaped pipe; 5. High-pressure nozzle; 6. Air collecting box; 7. Inlet pipe; 8. First flange; 9. Vibration motor; 10. Heat exchange tube; 11. Smoke inlet pipe; 12. Smoke outlet pipe; 13. Second flange; 14. Third flange; 15. Fourth flange; 16. Support frame; 17. Power shaft; 18. Gear. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] See also Figure 1 , Figure 3 and Figure 4 In this embodiment, a waste heat recovery device for acid production from flue gas includes a heat absorbing tank 1, the inner wall of which is rotatably connected to a rotating ring 2 via a bearing, and the outer surface of the heat absorbing tank 1 is fixedly connected to two support frames 16, and the support frames 16 can achieve the purpose of supporting the heat absorbing tank 1. Among them, a dust removal pipe 3 is rotatably connected between the left and right inner walls of the heat absorbing tank 1 via a bearing, and a power shaft 17 is rotatably connected to the right side of the heat absorbing tank 1 via a bearing, and a gear 18 is fixedly connected to the outer surface of the power shaft 17 and the dust removal pipe 3, and the two gears 18 are meshed and connected, and the right end of the power shaft 17 is fixedly connected to the output end of the motor outside, and the setting of the gear 18 can provide power for the rotation of the dust collection pipe.

[0032] At the same time, a smoke inlet pipe 11 is fixedly connected to the bottom end of the heat absorption tank 1. Through the setting of the smoke inlet pipe 11, external smoke can enter the interior of the heat absorption tank 1. The top end of the heat absorption tank 1 is fixedly connected to a smoke outlet pipe 12. Through the setting of the smoke outlet pipe 12, the smoke inside the heat absorption tank 1 can be discharged.

[0033] In addition, a second flange 13 is fixedly installed at the bottom end of the smoke inlet pipe 11. The second flange 13 facilitates the user to connect the smoke inlet pipe 11 with an external smoke duct. A third flange 14 is fixedly installed at the top end of the smoke outlet pipe 12. The third flange 14 facilitates the user to connect the smoke outlet pipe 12 with an external smoke duct.

[0034] In addition, two L-shaped tubes 4 are fixedly connected to the outer surface of the dust removal pipe 3, and the other ends of the two L-shaped tubes 4 are fixedly connected to the rotating ring 2. The two L-shaped tubes 4 and the outer surface of the dust removal pipe 3 are fixedly connected with multiple high-pressure nozzles 5.

[0035] See also Figure 1 , Figure 2 and Figure 3The dust removal pipe 3 passes through the right side of the outer wall of one end of the heat absorption tank 1 and is rotatably connected to the air collecting box 6 through a bearing. The right side of the air collecting box 6 is fixedly connected to the air intake pipe 7. The outer surface of the air intake pipe 7 is fixedly connected to the first flange 8. Two vibration motors 9 are fixedly installed on the outer surface of the heat absorption tank 1, and the output end of the vibration motor 9 is connected to the outer surface of the heat absorption tank 1. (The vibration motor is a new type of electromechanical product that utilizes the pulse electromagnetic force generated by the energized coil and the magnet to attract the rotor core, deform the spring to store potential energy, release energy during the operation of the single-phase half-wave current, and perform reciprocating vibration at the frequency of the alternating current.), a heat exchange tube 10 is installed inside the heat absorption tank 1, and both ends of the heat exchange tube 10 are fixedly embedded in the heat absorption tank 1. The heat exchange tube 10 is spring-shaped, and both ends of the heat exchange tube 10 are installed with a fourth flange 15. Through the arrangement of the heat exchange tube 10, it is convenient for the user to connect it to an external water pump.

[0036] A flue gas acid production waste heat recovery device in the present embodiment can achieve the purpose of making the heat absorption tank 1 vibrate at high frequency by setting a vibration motor 9, so that the dust attached to the surface of the heat exchange tube 10 and the dust on the inner wall of the heat absorption tank 1 can be shaken off and separated, and the dust on the surface of the heat exchange tube 10 and the inner wall of the heat absorption tank 1 can be completely removed by cooperating with the rotating jet of the dust removal pipe 3 and the L-shaped tube 4, thereby effectively extending the service life of the heat exchange tube 10 and improving the thermal conductivity of the heat exchange tube 10.

[0037] It should be noted that the right end of the air inlet pipe 7 needs to be connected to an external air pump to provide an air source.

[0038] The working principle of the above embodiment is as follows: when in use, by connecting the smoke inlet pipe 11 with the external smoke pipe, connecting the two ends of the heat exchange tube 10 with the external water pump, when the smoke enters the heat absorption tank 1, the high-temperature gas contacts the heat exchange tube 10 for heat conduction, the hot gas cools down and the flowing liquid inside the heat exchange tube 10 heats up, and the cooled gas is discharged through the smoke outlet pipe 12;

[0039] In addition, after the heat exchange is completed, by starting the vibration motor 9 to drive the heat absorption tube to vibrate, the dust attached to the surface of the heat absorption tank 1 and the heat exchange tube 10 can be separated and shaken off, and at the same time, the external motor is started to drive the power shaft 17 to rotate, and the dust removal tube 3 and the L-shaped rod are driven by the gear 18 to make a circular motion, and the air nozzle is made to move in a circular motion to spray, which can remove dust from the surface of the heat exchange tube 10 and the heat absorption tank 1 to avoid corrosion of the heat absorption tank 1 and the heat exchange tube 10, and at the same time can improve the heat exchange efficiency of the heat exchange tube 10 to avoid dust affecting the heat transfer of the heat exchange tube 10.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A flue gas acid waste heat recovery device, comprising a heat absorbing tank (1), characterized in that: The inner wall of the heat absorbing tank (1) is rotatably connected to a rotating ring (2) via a bearing, a dust removal pipe (3) is rotatably connected between the left and right inner walls of the heat absorbing tank (1) via a bearing, the outer surface of the dust removal pipe (3) is fixedly connected to two L-shaped pipes (4), the other ends of the two L-shaped pipes (4) are fixedly connected to the rotating ring (2), and the outer surfaces of the two L-shaped pipes (4) and the dust removal pipe (3) are fixedly connected to a plurality of high-pressure nozzles (5); The dust removal pipe (3) passes through the right side surface of the outer wall of one end of the heat absorption tank (1) and is rotatably connected to an air collecting box (6) through a bearing. The right side surface of the air collecting box (6) is fixedly connected to an air intake pipe (7). The outer surface of the air intake pipe (7) is fixedly connected to a first flange (8). Two vibration motors (9) are fixedly installed on the outer surface of the heat absorption tank (1). A heat exchange tube (10) is installed inside the heat absorption tank (1). Both ends of the heat exchange tube (10) are fixedly embedded in the heat absorption tank (1). The heat exchange tube (10) is spring-shaped.

2. The flue gas acid-making waste heat recovery device according to claim 1, characterized in that: The bottom end of the heat absorbing tank (1) is fixedly connected to a smoke inlet pipe (11).

3. The waste heat recovery device for acid production from flue gas according to claim 1, characterized in that: The top end of the heat absorbing tank (1) is fixedly connected to a smoke outlet pipe (12).

4. The flue gas acid waste heat recovery device according to claim 2, characterized in that: A second flange (13) is fixedly mounted on the bottom end of the smoke inlet pipe (11).

5. The flue gas acid waste heat recovery device according to claim 3, characterized in that: A third flange (14) is fixedly mounted on the top end of the smoke outlet pipe (12).

6. The flue gas acid waste heat recovery device according to claim 1, characterized in that: Fourth flanges (15) are installed at both ends of the heat exchange tube (10).

7. The flue gas acid waste heat recovery device according to claim 1, characterized in that: Two support frames (16) are fixedly connected to the outer surface of the heat absorbing tank (1).

8. The flue gas acid waste heat recovery device according to claim 1, characterized in that: The right side surface of the heat absorption tank (1) is rotatably connected to a power shaft (17) via a bearing, and the outer surfaces of the power shaft (17) and the dust removal pipe (3) are fixedly connected to gears (18), the two gears (18) are meshingly connected, and the right end of the power shaft (17) is fixedly connected to an external motor output end.

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