Flue gas dust purification equipment

Abstract

The invention relates to flue gas and dust purification equipment applied to the field of flue dust purification, the flue gas and dust purification equipment comprises a gas inlet pipe and a purification tank, a gas purification disc and purification liquid are arranged on the inner side of the purification tank, one end of the gas inlet pipe extends into the purification liquid, and a slag shifting mechanism comprising a rotating shaft, a follow-up wheel blade, a connecting frame and a slag shifting plate is mounted in the center of the inner bottom end of the purification tank; the rotating shaft extends to the inner side of the gas inlet pipe and is fixed with the follow-up wheel blade, the scum poking plate is located at the liquid level of the purification liquid and is connected with the rotating shaft through the connecting frame, and the follow-up wheel blade is driven by gas flow formed by flue gas passing through the gas inlet pipe to drive the scum poking plate to rotate through the connecting frame, so that scum on the surface of the purification liquid is poked aside; the gas flow purified by the purification liquid can stably overflow, so that the smooth emission and purification of the flue gas are ensured; in addition, the slag stirring mechanism integrally rotates under the action of airflow, a disturbance effect can be achieved on the purification liquid in the purification tank, local high temperature is prevented from being formed in the middle of the purification liquid, and the cooling effect on the flue gas is improved.

Description

Technical Field

[0001] The invention relates to a purification device, in particular to a flue gas dust purification device applied in the field of smoke dust purification. Background Art

[0002] In industrial production, a large amount of gas containing pollutants is easily generated due to combustion or production processes. This gas is collectively called flue gas and cannot be discharged directly into the air. A series of purification treatments are required before discharge to reduce the content of pollutants and minimize environmental pollution.

[0003] For example, the specification of patent publication number CN117244351B discloses a primary flue gas purification device with heat recovery, which includes a purification treatment box, an exhaust pipe is installed on the outside of the purification treatment box, a hollow reciprocating screw is arranged inside the purification treatment box, the hollow reciprocating screw passes through the top of the purification treatment box and extends to the bottom of the purification treatment box, the purification treatment box is rotatably connected to the hollow reciprocating screw, and the primary flue gas purification device with heat recovery draws the flue gas inside the hollow reciprocating screw into the inside of the connecting frame through a connecting pipe, and introduces water through the connecting pipe, and then through the extrusion of the sealing plate, the detergent and the flue gas are fully mixed, the dust in the flue gas is fully combined with the detergent, and the dust is separated, thereby separating the substances in the flue gas, and preheating the water through the heating cylinder to avoid instantaneous evaporation of the hot flue gas after contact with water, and the flue gas can be cooled.

[0004] However, although the above-mentioned flue gas dust purification equipment can effectively purify the dust by introducing it into water for solid-gas separation, some impurities carried in the gas will float on the water surface. As the floating objects accumulate more and more, the flue gas discharge will be poor. Therefore, a flue gas dust purification equipment is proposed to improve the above problem. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that although the existing flue gas dust purification equipment can effectively purify the dust by introducing it into water for solid-gas separation, some impurities carried in the gas will float on the water surface. As the floating objects accumulate more and more, the flue gas discharge will be poor.

[0006] In order to solve the above problems, the present invention provides a flue gas dust purification device, including a purification tank and an air intake pipe: The inner bottom end of the purification tank is filled with purification liquid, and a gas purification disk is arranged on the upper side of the purification liquid. The gas purification disk is detachably installed on the inner side of the purification tank. One end of the air intake pipe passes through the center of the gas purification disk from top to bottom and extends into the purification liquid. The other end of the air intake pipe is connected to the external flue gas exhaust pipe. A slag-prying mechanism is installed at the center of the inner bottom end of the purification tank, and the slag-prying mechanism includes a rotating shaft, a follower blade, a connecting frame and a slag-prying plate; The rotating shaft is installed vertically at the center of the inner bottom end of the purification tank, the top end of the rotating shaft extends to the inner side of the air inlet pipe and is fixed to the follower blade, the slag plate is connected to the side end of the rotating shaft through the connecting frame, and the slag plate is located at the liquid surface of the purification liquid; When the flue gas passes through the air inlet pipe, the follower blade is driven to rotate with the slag plate through the connecting frame. The rotating slag plate removes the slag on the surface of the purification liquid, so that the airflow purified by the purification liquid can overflow stably.

[0007] In the above-mentioned flue gas dust purification equipment, a slag removing mechanism including a rotating shaft, a follower blade, a connecting frame and a slag removing plate is installed at the center of the inner bottom end of the purification tank, and the airflow formed in the process of the flue gas passing through the air intake pipe is used to drive the follower blade to rotate, and the follower blade rotates with the slag removing plate through the connecting frame. The rotating slag removing plate removes the slag on the surface of the purification liquid, so that the airflow purified by the purification liquid can overflow stably, thereby ensuring the smooth discharge and purification of the flue gas; in addition, the slag removing mechanism rotates as a whole under the action of the airflow, which can have a disturbing effect on the purification liquid inside the purification tank, avoid the formation of local high temperature in the middle of the purification liquid, and improve the cooling effect on the flue gas.

[0008] As a further supplement to the present application, the connecting frame includes a connecting cross bar and a connecting vertical bar, the connecting cross bar is horizontally fixed to the side end of the rotating shaft, and the connecting vertical bar is vertically fixed to the upper end of the connecting cross bar; A floating block is installed at the lower end of the slag stripper plate, and a guide sliding hole is provided on the slag stripper plate for vertical sliding cooperation with the connecting vertical rod; in the process of purifying the flue gas with the purification liquid, part of the purification liquid will be carried away by the airflow, and part of it will evaporate due to heat, thereby lowering the liquid level of the purification liquid. By setting the slag stripper plate in conjunction with the floating block, the slag stripper plate can always be located at the liquid level of the purification liquid, ensuring a stable pushing away of the scum on the liquid surface.

[0009] As a further supplement to the present application, in the process of flue gas passing through the air intake pipe, the follower impeller is driven to rotate with the floating block through the connecting frame and the slag plate, and the front end of the floating block along its rotation direction is configured as a water-breaking cone head; the water-breaking cone head can reduce the resistance encountered during its rotation.

[0010] As a further supplement to the present application, the floating block is arranged in an arc shape, and the arc surface of the floating block coincides with the rotation circle where it is located; the arc-shaped floating block can further reduce the rotation resistance.

[0011] As a further supplement to the present application, a first detector is installed at the top of the connecting vertical rod, a second detector is provided on the upper side of the gas purification disk, and the second detector is detachably installed on the inner wall of the purification tank; The first detector and the second detector are both electrically connected to the external monitoring system, and the monitoring system is electrically connected to the user end. The first detector and the second detector respectively detect the gas components before and after purification by the gas purification disk. The monitoring system monitors and compares the data detected by the first detector and the second detector, and issues an alarm to the user end when the data exceeds a manually preset threshold.

[0012] As a further supplement to the present application, multiple gas purification discs are provided, and the multiple gas purification discs are stacked from top to bottom on the inner side of the purification tank; by stacking the multiple gas purification discs from top to bottom, during use, the gas purification discs located on the lower side lose their purification effect first. During replacement operations, several gas purification discs located on the lower side can be replaced, and several gas purification discs located on the upper side can be retained for continued use. There is no need to replace all the gas purification discs, which saves more materials.

[0013] As a further supplement to the present application, a plurality of thermocouples are fixed to the side end of the purification tank, one end of the thermocouple extends into the purified liquid, and the other end of the thermocouple extends to the outside of the purification tank. A protective mesh cover is fixed to the outer wall of the purification tank and is arranged on the outside of the thermocouple. The thermocouple utilizes its efficient heat exchange effect to cooperate with an external converter to convert the thermal energy in the purified liquid into electrical energy for storage, thereby achieving heat recovery while maintaining the purified liquid in a stable low-temperature state, thereby ensuring the cooling effect on the flue gas.

[0014] As a further supplement to the present application, a protective cover is detachably installed on the top of the purification tank, and the protective cover is hollow; the hollow protective cover effectively prevents external debris from falling into the purification tank while ensuring that the purified airflow can be discharged stably.

[0015] As a further supplement to the present application, a multi-directional mounting head is installed at the end of the air inlet pipe located outside the purification tank, and sealing covers can be removably installed at multiple pipe openings on the multi-directional mounting head, so that it is convenient to connect according to the actual direction of the external flue gas exhaust pipe.

[0016] As a further supplement to the present application, the air intake pipe is made of corrosion-resistant and high-temperature-resistant pipe material to extend the service life of the air intake pipe.

[0017] In summary, a slag-prying mechanism including a rotating shaft, a follower blade, a connecting frame and a slag-prying plate is installed at the center of the inner bottom end of the purification tank, and the follower blade is driven to rotate by the airflow formed in the process of the flue gas passing through the air intake pipe. The follower blade rotates with the slag-prying plate through the connecting frame, and the rotating slag-prying plate pushes away the scum on the surface of the purification liquid, so that the airflow purified by the purification liquid can overflow stably, thereby ensuring the smooth discharge and purification of the flue gas. In the process of purifying the flue gas with the purification liquid, part of the purification liquid will be carried away by the airflow, and part of it will evaporate due to heat, thereby lowering the liquid level of the purification liquid. By arranging the slag-prying plate in conjunction with the floating block, the slag-prying plate can always be located at the liquid level of the purification liquid, ensuring the stable pushing away of the scum on the liquid surface. In addition, the slag-moving mechanism rotates as a whole under the action of the airflow, which can disturb the purified liquid inside the purification tank, avoid the formation of local high temperature in the middle of the purified liquid, and improve the cooling effect on the flue gas. The efficient heat exchange of the thermocouple is used in conjunction with an external converter to convert the thermal energy in the purified liquid into electrical energy for storage, thereby achieving heat recovery while keeping the purified liquid in a stable low-temperature state, thereby ensuring the cooling effect on the flue gas. During the purification process, the first detector and the second detector respectively detect the gas components before and after purification by the gas purification disk, and the monitoring system monitors and compares the data detected by the first detector and the second detector, and issues an alarm to the user end when the data exceeds the manually preset threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the first embodiment of the present application; Figure 2 This is a schematic cross-sectional view of the first embodiment of the present application; Figure 3 This is a partial three-dimensional structural schematic diagram of the purification tank according to the first embodiment of the present application; Figure 4 This is a schematic diagram of the three-dimensional structure of the slag removal mechanism and the air intake pipe of the first embodiment of the present application; Figure 5 This is a schematic diagram of the three-dimensional structure of the slag removing mechanism according to the first embodiment of the present application; Figure 6 This is a schematic diagram of the three-dimensional structure of the slag stripper plate and the floating block of the first embodiment of the present application; Figure 7 This is a partial bottom view structural schematic diagram of the first embodiment of the present application; Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0019] Description of the numbers in the figure: 1. Purification tank; 2. Air inlet pipe; 3. Protective cover; 4. Gas purification disk; 5. Slag removal mechanism; 51. Rotating shaft; 52. Follower blade; 53. Connecting cross bar; 54. Connecting vertical bar; 55. Slag removal plate; 5501. Guide slide hole; 56. Floating block; 5601. Water-breaking cone head; 6. First detector; 7. Second detector; 8. Thermocouple; 9. Protective mesh cover; 10. Multi-directional mounting head; 11. Sealing cover. DETAILED DESCRIPTION

[0020] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0021] The first implementation method: The present invention provides a flue gas dust purification device, please refer to Figure 1-8 , including a purification tank 1 and an air intake pipe 2, the inner bottom end of the purification tank 1 is filled with purification liquid, and a gas purification disk 4 is arranged on the upper side of the purification liquid, and the gas purification disk 4 can be detachably installed on the inner side of the purification tank 1, wherein the gas purification disk 4 is a disk-shaped body made of conventional gas purification materials in the prior art; one end of the air intake pipe 2 passes through the center of the gas purification disk 4 from top to bottom and extends into the purification liquid, and the other end of the air intake pipe 2 is connected to the external flue gas exhaust pipe, and the air intake pipe 2 is made of corrosion-resistant and high-temperature resistant pipe material to extend the service life of the air intake pipe 2.

[0022] The air intake pipe 2 is connected to the external flue gas exhaust pipe, and the exhausted flue gas is introduced into the purification liquid through the air intake pipe 2. The purification liquid is used to filter out solid waste such as dust in the flue gas. At the same time, the purification liquid is used to cool the flue gas. The airflow purified by the purification liquid passes through the gas purification disk 4 from bottom to top for purification, and is finally discharged from the top of the purification tank 1.

[0023] Among them, a protective cover 3 is detachably installed on the top of the purification tank 1. The protective cover 3 is hollow. The hollow protective cover 3 can effectively prevent external debris from falling into the purification tank 1 while ensuring that the purified airflow can be discharged stably.

[0024] Among them, a multi-directional mounting head 10 is installed at the end of the air inlet pipe 2 located outside the purification tank 1, and sealing covers 11 can be removably installed at multiple pipe openings on the multi-directional mounting head 10, which is convenient for connection according to the actual direction of the external flue gas exhaust pipe.

[0025] A slag removing mechanism 5 is installed at the center of the inner bottom end of the purification tank 1. The slag removing mechanism 5 includes a rotating shaft 51, a follower blade 52, a connecting frame and a slag removing plate 55. The slag removing plate 55 is a mesh structure with smaller meshes, which can reduce the resistance during the slag removing process. The rotating shaft 51 is vertically rotated and installed at the center of the inner bottom end of the purification tank 1. The top of the rotating shaft 51 extends to the inner side of the air inlet pipe 2 and is fixed to the follower blade 52. The slag removing plate 55 is connected to the side end of the rotating shaft 51 through the connecting frame. The slag removing plate 55 is located at the liquid surface of the purified liquid. In the process of the flue gas passing through the air inlet pipe 2, the follower blade 52 is driven to rotate with the slag removing plate 55 through the connecting frame. The rotating slag removing plate 55 removes the slag on the surface of the purified liquid, so that the airflow purified by the purified liquid can overflow stably.

[0026] The flue gas dust purification device installs a slag removing mechanism 5 including a rotating shaft 51, a follower blade 52, a connecting frame and a slag removing plate 55 at the center of the inner bottom end of the purification tank 1, and utilizes the airflow formed in the process of the flue gas passing through the air intake pipe 2 to drive the follower blade 52 to rotate, and the follower blade 52 rotates with the slag removing plate 55 through the connecting frame. The rotating slag removing plate 55 removes the floating slag on the surface of the purification liquid, so that the airflow purified by the purification liquid can overflow stably, thereby ensuring the smooth discharge and purification of the flue gas; in addition, the slag removing mechanism 5 rotates as a whole under the action of the airflow, which can disturb the purification liquid inside the purification tank 1, avoid the formation of local high temperature in the middle of the purification liquid, and improve the cooling effect on the flue gas.

[0027] Among them, the connecting frame includes a connecting cross bar 53 and a connecting vertical bar 54. The connecting cross bar 53 is horizontally fixed to the side end of the rotating shaft 51, and the connecting vertical bar 54 is vertically fixed to the upper end of the connecting cross bar 53. A floating block 56 is installed at the lower end of the slag remover plate 55, and a guide slide hole 5501 is provided on the slag remover plate 55 to vertically slide with the connecting vertical bar 54.

[0028] Based on the coordinated arrangement of the above structure, in the process of purifying the flue gas with the purification liquid, part of the purification liquid will be carried away by the airflow, and part of it will evaporate due to the heat, thereby lowering the liquid level of the purification liquid. By coordinating the slag stripping plate 55 with the floating block 56, the slag stripping plate 55 can be always located at the liquid level of the purification liquid, ensuring a stable removal of the slag on the liquid surface.

[0029] Among them, Figure 7 and Figure 8 It is shown that, in the process of smoke passing through the air intake pipe 2, the driven follower impeller 52 rotates with the floating block 56 through the connecting frame and the slag plate 55. The front end of the floating block 56 along its rotation direction is configured as a water-breaking cone head 5601. The water-breaking cone head 5601 can reduce the resistance encountered during its rotation. In addition, the floating block 56 is configured in an arc shape, and the arc surface of the floating block 56 coincides with the rotating circle in which it is located. The arc-shaped floating block 56 can further reduce the rotation resistance.

[0030] Among them, a first detector 6 is installed at the top of the connecting vertical rod 54, a second detector 7 is arranged on the upper side of the gas purification disk 4, and the second detector 7 is detachably installed on the inner wall of the purification tank 1, the first detector 6 and the second detector 7 are electrically connected to the external monitoring system, the monitoring system is electrically connected to the user end, the first detector 6 and the second detector 7 respectively detect the gas components before and after purification by the gas purification disk 4, the monitoring system monitors and compares the data detected by the first detector 6 and the second detector 7, and sends an alarm to the user end when the data exceeds the manually preset threshold.

[0031] Among them, a plurality of gas purification disks 4 are provided, and the plurality of gas purification disks 4 are stacked from top to bottom on the inner side of the purification tank 1. By stacking the plurality of gas purification disks 4 from top to bottom, during use, the gas purification disks 4 located on the lower side lose their purification effect first. During replacement, several gas purification disks 4 located on the lower side can be replaced, and several gas purification disks 4 located on the upper side can be retained for continued use. There is no need to replace all the gas purification disks 4, which saves more materials.

[0032] Among them, a plurality of thermocouples 8 are fixed to the side end of the purification tank 1, one end of the thermocouple 8 extends into the purified liquid, and the other end of the thermocouple 8 extends to the outside of the purification tank 1, and a protective mesh cover 9 is fixed on the outer wall of the purification tank 1 and is arranged on the outside of the thermocouple 8. The thermocouple 8 utilizes its efficient heat exchange effect to cooperate with an external converter to convert the thermal energy in the purified liquid into electrical energy for storage, thereby realizing the heat recovery effect and keeping the purified liquid in a stable low-temperature state, thereby ensuring the cooling effect on the flue gas.

[0033] Working principle: the air intake pipe 2 is connected to the external flue gas exhaust pipe, and the exhausted flue gas is introduced into the purification liquid through the air intake pipe 2, and the dust and other solid waste in the flue gas are filtered out by the purification liquid. In this process, the airflow formed by the flue gas passing through the air intake pipe 2 drives the follower blade 52 to rotate, and the follower blade 52 rotates with the slag plate 55 through the connecting frame. The rotating slag plate 55 removes the scum on the surface of the purification liquid, so that the airflow purified by the purification liquid can overflow stably, thereby ensuring the smooth discharge and purification of the flue gas. In the process of purifying the flue gas with the purification liquid, part of the purification liquid will be carried away by the airflow, and part of it will evaporate due to heat, thereby lowering the liquid level of the purification liquid. By setting the slag plate 55 in conjunction with the floating block 56, the slag plate 55 can be always located at the liquid level of the purification liquid, ensuring the stable removal of the scum on the liquid surface; in addition, the slag removing mechanism 5 rotates as a whole under the action of the airflow, which can have a disturbing effect on the purification liquid inside the purification tank 1. Avoid the formation of local high temperature in the middle of the purified liquid, improve the cooling effect on the flue gas, and use the efficient heat exchange effect of the thermocouple 8 to cooperate with the external converter to convert the heat energy in the purified liquid into electrical energy for storage, so as to achieve heat recovery while keeping the purified liquid in a stable low-temperature state, thereby ensuring the cooling effect on the flue gas; the airflow purified by the purified liquid passes through the gas purification disk 4 from bottom to top, and is finally discharged from the top of the purification tank 1. During the purification process, the first detector 6 and the second detector 7 respectively detect the gas components before and after purification by the gas purification disk 4, and the monitoring system monitors and compares the data detected by the first detector 6 and the second detector 7, and issues an alarm to the user end when the data exceeds the manually preset threshold; in addition, during use, the gas purification disk 4 located on the lower side loses its purification effect first. During replacement, several gas purification disks 4 located on the lower side can be replaced, and several gas purification disks 4 located on the upper side can be retained for continued use.

[0034] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A flue gas dust purification device, comprising a purification tank (1) and an air intake pipe (2), characterized in that: The inner bottom end of the purification tank (1) contains a purification liquid, and a gas purification disk (4) is arranged on the upper side of the purification liquid. The gas purification disk (4) is detachably mounted on the inner side of the purification tank (1). One end of the air intake pipe (2) passes through the center of the gas purification disk (4) from top to bottom and extends into the purification liquid. The other end of the air intake pipe (2) is connected to an external flue gas exhaust pipe. A slag removing mechanism (5) is installed at the center of the inner bottom end of the purification tank (1), and the slag removing mechanism (5) comprises a rotating shaft (51), a follower blade (52), a connecting frame and a slag removing plate (55); The rotating shaft (51) is vertically rotatably mounted at the center of the inner bottom end of the purification tank (1), the top end of the rotating shaft (51) extends to the inner side of the air inlet pipe (2) and is fixed to the follower blade (52), the slag stripper plate (55) is connected to the side end of the rotating shaft (51) via the connecting frame, and the slag stripper plate (55) is located at the liquid surface of the purification liquid; When the flue gas passes through the air inlet pipe (2), the follower blade (52) is driven to rotate with the slag removal plate (55) through the connecting frame, and the rotating slag removal plate (55) removes the slag on the surface of the purification liquid, so that the airflow purified by the purification liquid can overflow stably.

2. The flue gas dust purification device according to claim 1, characterized in that: The connecting frame comprises a connecting cross bar (53) and a connecting vertical bar (54), wherein the connecting cross bar (53) is horizontally fixed to a side end of the rotating shaft (51), and the connecting vertical bar (54) is vertically fixed to an upper end of the connecting cross bar (53); A floating block (56) is installed at the lower end of the slag-prying plate (55), and a guide sliding hole (5501) is provided on the slag-prying plate (55) for vertical sliding cooperation with the connecting vertical rod (54).

3. The flue gas dust purification device according to claim 2, characterized in that: When the flue gas passes through the air inlet pipe (2), the follower blade (52) is driven to rotate with the floating block (56) through the connecting frame and the slag removal plate (55); the front end of the floating block (56) along its rotation direction is configured as a water-breaking cone head (5601).

4. The flue gas dust purification device according to claim 3, characterized in that: The floating block (56) is arranged in an arc shape, and the arc surface of the floating block (56) coincides with the rotation circle on which it is located.

5. The flue gas dust purification device according to claim 3, characterized in that: A first detector (6) is installed at the top end of the connecting vertical rod (54), a second detector (7) is provided on the upper side of the gas purification disk (4), and the second detector (7) is detachably installed on the inner wall of the purification tank (1); The first detector (6) and the second detector (7) are both electrically connected to an external monitoring system, and the monitoring system is electrically connected to a user end. The first detector (6) and the second detector (7) respectively detect the gas components before and after being purified by the gas purification disk (4). The monitoring system monitors and compares the data detected by the first detector (6) and the second detector (7), and issues an alarm to the user end when the data exceeds a manually preset threshold.

6. The flue gas dust purification device according to claim 1, characterized in that: A plurality of the gas purification discs (4) are provided, and the plurality of gas purification discs (4) are stacked from top to bottom on the inner side of the purification tank (1).

7. The flue gas dust purification device according to claim 1, characterized in that: A plurality of thermocouples (8) are fixed to the side end of the purification tank (1), one end of the thermocouple (8) extends into the purification liquid, and the other end of the thermocouple (8) extends to the outside of the purification tank (1), and a protective mesh cover (9) is fixed to the outer wall of the purification tank (1) and is arranged to cover the outside of the thermocouple (8).

8. The flue gas dust purification device according to claim 1, characterized in that: A protective cover (3) is detachably mounted on the top of the purification tank (1), and the protective cover (3) is hollow.

9. The flue gas dust purification device according to claim 1, characterized in that: A multi-directional mounting head (10) is mounted on the end of the air inlet pipe (2) located outside the purification tank (1), and sealing covers (11) are detachably mounted on multiple pipe openings on the multi-directional mounting head (10).

10. The flue gas dust purification device according to claim 1, characterized in that: The air intake pipe (2) is made of corrosion-resistant and high-temperature-resistant pipe material.

Images