Heat pipe flue gas waste heat recovery and purification device

Abstract

The invention provides a heat pipe flue gas waste heat recovery and purification device. The heat pipe flue gas waste heat recovery and purification device comprises a heat pipe body; the dust filtering plate is connected to the starting end of the heat pipe body, and the steam dust removing pipe is connected to the rear portion of the dust filtering plate and distributed in the smoke discharging direction of the heat pipe body. And the steam dust removal pipe is used for introducing steam into the heat pipe body so as to adsorb smoke dust in the flue gas. The flue gas purification device has the effect of improving the flue gas purification effect.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas purification devices, and in particular to a heat pipe flue gas waste heat recovery and purification device. Background Art

[0002] With the rapid development of economy, energy consumption is increasing day by day. As the requirements of energy conservation and emission reduction are constantly increasing, flue gas waste heat recovery and purification are particularly important. Flue gas purification mainly purifies the smoke and dust emitted by industrial furnaces such as metallurgy, electricity, and building materials in production to improve air quality, reduce the damage of particulate matter in smoke and dust to the respiratory system, and reduce the threat to people's health; waste heat recovery reduces energy waste.

[0003] In the relevant technology, common flue gas purification methods include filtration purification and spray purification; filtration purification mostly uses a ceramic filtration structure, and spray purification is to purify the flue gas by spraying; the ceramic filtration structure cannot purify particles with smaller particle sizes, and spray purification will produce a large amount of washing water. If water treatment is not performed, it is easy to cause secondary pollution, resulting in high flue gas purification costs and unsatisfactory flue gas purification effects. Summary of the invention

[0004] In view of this, the present invention aims to propose a heat pipe flue gas waste heat recovery and purification device to improve the effect of flue gas purification.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A heat pipe flue gas waste heat recovery and purification device, comprising:

[0007] Heat pipe body;

[0008] A dust filter plate connected to the beginning of the heat pipe body, and a steam dust removal pipe connected to the rear of the dust filter plate and distributed along the smoke exhaust direction of the heat pipe body;

[0009] The steam dust removal pipe introduces steam into the heat pipe body to adsorb the dust in the flue gas.

[0010] Furthermore, an evaporation box is provided outside the heat pipe body;

[0011] The heat pipe body is connected with a heat exchange pipe which leads from the heat pipe body to the evaporation box, and the heat exchange pipe is located between the dust filter plate and the steam dust removal pipe;

[0012] A conduction pipe is connected between the top plate of the evaporation box and the steam dust removal pipe.

[0013] Furthermore, the steam dust removal pipe is coaxial with the heat pipe body, and the diameter of the steam dust removal pipe is smaller than the inner diameter of the heat pipe body;

[0014] The conduction pipe is connected to the head end of the steam dust removal pipe;

[0015] A waste storage box is connected to the outer wall of the heat pipe body behind the steam dust removal pipe along the smoke exhaust direction of the heat pipe body.

[0016] Furthermore, a condensation filter plate is provided in the heat pipe body; the condensation filter plate is located above the waste storage box;

[0017] The condensation filter plate is a porous plate-shaped structure, and the condensation filter plate gradually inclines from the top end to the bottom end toward a side away from the steam dust removal pipe.

[0018] Furthermore, the heat pipe body includes a flat section pipe and a vertical section pipe, the flat section pipe is connected to both ends of the vertical section pipe, and the two flat section pipes are parallel;

[0019] The dust filter plate is located in the vertical section pipe; the steam dust removal pipe is located in the horizontal section pipe.

[0020] Furthermore, the bottom end of the vertical pipe is connected to a dust hopper.

[0021] Furthermore, a guide pipe is connected between the bottom end of the waste storage box and the dust collecting hopper.

[0022] Furthermore, the dust filter plate is made of ceramic as raw material.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The heat pipe flue gas waste heat recovery and purification device of the present invention filters the smoke in the smoke by setting a dust filter plate in the heat pipe body, thereby filtering the large-diameter particles in the smoke; the filtered smoke passes through a steam dust removal pipe, and the high-temperature steam discharged from the steam dust removal pipe contacts the smoke, and the water molecules in the steam combine with the particles in the smoke. The water molecules adsorb part of the smoke to increase the weight of the smoke particles, and the particles settle under the action of gravity; the large-diameter particles in the smoke are filtered through the dust filter plate, and then steam adsorption is used to purify the smoke, thereby achieving the effect of improving the smoke purification effect. At the same time, water pollution caused by spraying the smoke is reduced, saving natural resources.

[0025] By connecting an evaporator box outside the heat pipe body and setting a heat exchange tube for heat conduction between the evaporator box and the heat pipe body, since the flue gas generated in production is high-temperature flue gas, the heat exchange tube can transfer the temperature of the smoke in the heat pipe body to the evaporator box through the heat exchange tube, heating the water in the evaporator box to a boiling state; and then transfer it to the steam dust removal tube through the conduction tube, thereby filtering the smoke in the flue gas and recycling the waste heat of the flue gas. By setting the heat exchange tube between the dust filter plate and the steam dust removal tube, the flue gas passing through the heat exchange tube is high-temperature flue gas, and it is prevented that the steam flows back to the dust filter plate when the flue gas flow rate is low, causing the smoke to condense on the dust filter plate, further ensuring the effect of filtering the smoke in the flue gas.

[0026] By setting the diameter of the dust removal pipe to be smaller than the inner diameter of the heat pipe body, and setting the steam dust removal pipe coaxially with the heat pipe body, and connecting the conduction pipe to the head end of the steam dust removal pipe, when the high-pressure steam generated in the evaporation box is discharged through the steam dust removal pipe, the steam dust removal pipe has a thinner diameter and a faster flow rate. At this time, the steam airflow flows, and according to the air multiplication principle, it is convenient for the flue gas to enter from the head end of the heat pipe body and be discharged from the end, which has the effect of promoting the circulation of the flue gas in the heat pipe body; the waste storage box realizes the collection of condensed and settled particles.

[0027] By setting a condensation filter plate in the heat pipe body, the particles adsorbed by water molecules are blocked by the condensation filter plate and condensed into heavier particles, which settle under the action of gravity and the blocking effect of the condensation filter plate. The inclined condensation filter plate has a larger contact area with the smoke, which improves the flue gas purification effect.

[0028] The heat pipe body includes a flat pipe and a vertical pipe, and the dust filter plate is arranged in the vertical pipe. After the dust filter plate filters the large-size particles, the large-size dust is deposited. The dust collecting hopper is arranged to collect the deposited dust, and the possibility of the deposited dust blocking the heat pipe body is reduced.

[0029] By setting up the guide pipe, the connection between the waste storage box and the dust collecting hopper is achieved. After the water vapor condenses, the mixture of smoke and water in the waste storage box flows into the dust collecting hopper, avoiding the smoke in the dust collecting hopper from flying when the smoke circulates, and realizing timely cleaning of the waste storage box.

[0030] The dust filter plate is made of ceramic as raw material. Ceramic material has the characteristics of high temperature resistance and corrosion resistance, and is more suitable for high-temperature flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0032] Figure 1It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0033] Figure 2 The cross-sectional view shows a heat exchange tube according to an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1. Heat pipe body;

[0036] 101, flat section pipe; 102, vertical section pipe;

[0037] 2. Dust filter plate;

[0038] 3. Steam dust removal pipe;

[0039] 4. Evaporator box;

[0040] 401, heat exchange tube;

[0041] 5. Conducting tube;

[0042] 6. Waste storage box;

[0043] 7. Coagulation filter plate;

[0044] 8. Dust hopper;

[0045] 9. Draft tube. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0047] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0049] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0050] The present embodiment relates to a heat pipe flue gas waste heat recovery and purification device to improve the flue gas purification effect.

[0051] In terms of overall structure, Figure 1 to Figure 2 As shown, the heat pipe flue gas waste heat recovery and purification device includes: a heat pipe body 1; a dust filter plate 2 connected to the starting end of the heat pipe body 1, and a steam dust removal pipe 3 connected to the rear of the dust filter plate 2 and distributed along the exhaust direction of the heat pipe body 1; the steam dust removal pipe 3 introduces steam into the heat pipe body 1 to adsorb the smoke in the flue gas.

[0052] By setting a dust filter plate 2 in the heat pipe body 1 to filter the smoke in the smoke first, the large-size particles in the smoke can be filtered; the filtered smoke passes through the steam dust removal pipe 3, the high-temperature steam discharged from the steam dust removal pipe 3 contacts the smoke, the water molecules in the steam combine with the particles in the smoke, the water molecules adsorb part of the smoke to increase the weight of the smoke particles, and the particles settle under the action of gravity; the large-size particles in the smoke are filtered by the dust filter plate 2, and then the smoke is purified by steam adsorption, thereby achieving the effect of improving the smoke purification effect. At the same time, the water pollution caused by spraying the smoke is reduced, saving natural resources.

[0053] Based on the above overall introduction, Figure 1 to Figure 2 As shown, the head end of the heat pipe body 1 in this embodiment is connected to the smoke generating device, which is suitable for industrial and non-industrial kilns such as metallurgy, electricity, and building materials; the heat pipe body 1 can use round tubes as production materials, or square tubes as production materials. This application uses square tubes. The dust filter plate 2 is made of ceramics as raw materials, and the dust filter plate 2 is detachably connected to the heat pipe body 1 to facilitate replacement and cleaning of the dust filter plate 2.

[0054] Based on steam dust removal, in order to reduce the consumption of natural resources and realize the utilization of waste heat from flue gas, an evaporation box 4 is provided outside the heat pipe body 1; the heat pipe body 1 is connected with a heat exchange pipe 401 which leads from the heat pipe body 1 to the evaporation box 4, and the heat exchange pipe 401 is located between the dust filter plate 2 and the steam dust removal pipe 3; a conduction pipe 5 is connected between the top plate of the evaporation box 4 and the steam dust removal pipe 3.

[0055] By connecting the evaporator box 4 outside the heat pipe body 1 and setting a heat exchange tube 401 for heat conduction between the evaporator box 4 and the heat pipe body 1, since the flue gas generated in the production is high-temperature flue gas, the heat exchange tube 401 transfers the temperature of the flue dust in the heat pipe body 1 to the evaporator box 4 through the heat exchange tube 401, and heats the water in the evaporator box 4 to a boiling state; and then transfers it to the steam dust removal tube 3 through the conduction tube 5, that is, the filtration of the flue dust in the flue gas is realized, and the waste heat of the flue gas is recovered and utilized. By setting the heat exchange tube 401 between the dust filter plate 2 and the steam dust removal tube 3, the flue gas passing through the heat exchange tube 401 is high-temperature flue gas, and it is prevented that the steam flows back to the dust filter plate 2 when the flue gas flow rate is low, causing the smoke dust to condense on the dust filter plate 2, further ensuring the effect of filtering the smoke dust in the flue gas.

[0056] In order to promote the circulation of flue gas in the heat pipe body 1, the steam dust removal pipe 3 is coaxial with the heat pipe body 1, and the diameter of the steam dust removal pipe 3 is smaller than the inner diameter of the heat pipe body 1; the conduction pipe 5 is connected to the head end of the steam dust removal pipe 3; and a waste storage box 6 is connected to the outer wall of the heat pipe body 1 behind the steam dust removal pipe 3 along the exhaust direction of the heat pipe body 1.

[0057] By setting the diameter of the dust removal pipe to be smaller than the inner diameter of the heat pipe body 1, and setting the steam dust removal pipe 3 coaxially with the heat pipe body 1, connecting the conduction pipe 5 to the head end of the steam dust removal pipe 3, when the high-pressure steam generated in the evaporation box 4 is discharged through the steam dust removal pipe 3, since the diameter of the steam dust removal pipe 3 is relatively thin, the flow rate of the steam dust removal pipe 3 is relatively fast. At this time, the steam airflow flows, and according to the air multiplication principle, it is convenient for the flue gas to enter from the head end of the heat pipe body 1 and be discharged from the end, which has the effect of promoting the circulation of the flue gas in the heat pipe body 1; the waste storage box 6 realizes the collection of condensed and settled particles.

[0058] In order to improve the smoke purification effect, Figure 1 to Figure 2 As shown, a condensation filter plate 7 is provided in the heat pipe body 1; the condensation filter plate 7 is located above the waste storage box 6; the condensation filter plate 7 is a porous plate structure, and the condensation filter plate 7 gradually tilts from the top to the bottom toward the side away from the steam dust removal pipe 3. By arranging the condensation filter plate 7 in the heat pipe body 1, the particles adsorbed by water molecules are blocked by the condensation filter plate 7 and condensed into particles with heavier weight, and settle under the action of gravity and the blocking action of the condensation filter plate 7. The inclined condensation filter plate 7 has a larger contact area with the smoke, thereby improving the flue gas purification effect.

[0059] In order to facilitate the collection of smoke and dust and reduce the possibility of blockage of the heat pipe body 1, the heat pipe body 1 includes a flat section pipe 101 and a vertical section pipe 102. The flat section pipe 101 is connected to both ends of the vertical section pipe 102, and the two flat section pipes 101 are parallel; the dust filter plate 2 is located in the vertical section pipe 102; and the steam dust removal pipe 3 is located in the flat section pipe 101. The bottom end of the vertical section pipe 102 is connected to a dust hopper 8. By setting the heat pipe body 1 to include a flat section pipe 101 and a vertical section pipe 102, and setting the dust filter plate 2 in the vertical section pipe 102, the dust filter plate 2 filters large-size particles, which facilitates the deposition of large-size smoke. By setting the dust hopper 8, it is convenient to collect the deposited smoke and dust, and reduces the possibility of the deposited smoke and dust blocking the heat pipe body 1.

[0060] Based on the fact that the bottom end of the vertical section pipe 102 is connected to the dust collecting hopper 8, a guide pipe 9 is connected between the bottom end of the waste storage box 6 and the dust collecting hopper 8. By setting the guide pipe 9, the connection between the waste storage box 6 and the dust collecting hopper 8 is achieved. After the water vapor condenses, the mixture of smoke and water in the waste storage box 6 is convenient to flow into the dust collecting hopper 8, thereby preventing the smoke in the dust collecting hopper 8 from flying when the smoke circulates, and realizing timely cleaning of the waste liquid in the waste storage box 6.

[0061] The heat pipe flue gas waste heat recovery and purification device described in the embodiment of the present application filters the smoke in the smoke by setting a dust filter plate 2 in the heat pipe body 1 to filter the smoke in the smoke first, so as to filter the large-size particles in the smoke; after filtering, the smoke passes through the steam dust removal pipe 3, and the high-temperature steam discharged from the steam dust removal pipe 3 contacts the smoke, and the water molecules in the steam combine with the particles in the smoke. The water molecules adsorb part of the smoke to increase the weight of the smoke particles, and the particles settle under the action of gravity; the large-size particles in the smoke are filtered by the dust filter plate 2, and then the smoke is purified by steam adsorption, thereby achieving the effect of improving the smoke purification effect. At the same time, the water pollution caused by spraying the smoke is reduced, saving natural resources.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat pipe flue gas waste heat recovery and purification device, characterized in that: include: Heat pipe body (1); A dust filter plate (2) connected to the beginning of the heat pipe body (1), and a steam dust removal pipe (3) connected to the rear of the dust filter plate (2) and distributed along the smoke exhaust direction of the heat pipe body (1); The steam dust removal pipe (3) passes steam into the heat pipe body (1) to adsorb dust in the flue gas.

2. The heat pipe flue gas waste heat recovery and purification device according to claim 1 is characterized in that: An evaporation box (4) is provided outside the heat pipe body (1); The heat pipe body (1) is connected to a heat exchange pipe (401) which leads from the heat pipe body (1) to the evaporation box (4), and the heat exchange pipe (401) is located between the dust filter plate (2) and the steam dust removal pipe (3); A conduction pipe (5) is connected between the top plate of the evaporation box (4) and the steam dust removal pipe (3).

3. The heat pipe flue gas waste heat recovery and purification device according to claim 2 is characterized in that: The steam dust removal pipe (3) is coaxial with the heat pipe body (1), and the diameter of the steam dust removal pipe (3) is smaller than the inner diameter of the heat pipe body (1); The conduction pipe (5) is connected to the head end of the steam dust removal pipe (3); A waste storage box (6) is connected to the outer wall of the heat pipe body (1) behind the steam dust removal pipe (3) along the smoke exhaust direction of the heat pipe body (1).

4. The heat pipe flue gas waste heat recovery and purification device according to claim 3 is characterized in that: A condensation filter plate (7) is provided in the heat pipe body (1); the condensation filter plate (7) is located above the waste storage box (6); The condensation filter plate (7) is a porous plate-shaped structure, and the condensation filter plate (7) gradually inclines from the top end to the bottom end toward a side away from the steam dust removal pipe (3).

5. The heat pipe flue gas waste heat recovery and purification device according to claim 3 is characterized in that: The heat pipe body (1) comprises a flat section pipe (101) and a vertical section pipe (102), the flat section pipe (101) being connected to both ends of the vertical section pipe (102), and the two flat section pipes (101) are parallel; The dust filter plate (2) is located in the vertical section pipe (102); and the steam dust removal pipe (3) is located in the horizontal section pipe (101).

6. The heat pipe flue gas waste heat recovery and purification device according to claim 5 is characterized in that: The bottom end of the vertical section pipe (102) is connected to a dust collecting hopper (8).

7. The heat pipe flue gas waste heat recovery and purification device according to claim 6 is characterized in that: A flow guide pipe (9) is connected between the bottom end of the waste storage box (6) and the dust collecting hopper (8).

8. The heat pipe flue gas waste heat recovery and purification device according to claim 1 is characterized in that: The dust filter plate (2) is made of ceramic as raw material.

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