High-temperature furnace flue gas cyclone dust removal device

Abstract

The utility model discloses a high temperature furnace flue gas cyclone dust collector, including bottom support, cylinder portion, conic part and waste heat recovery cylinder, the cylinder portion tangent connection has flue gas inlet pipe, and the top is connected to acid -resistant heat exchange pipe in waste heat recovery cylinder through exhaust pipe and gas guide elbow, and the cylinder portion is equipped with first ceramic wear -resistant layer with the inner wall of conic part, and the exhaust pipe stretches into segment outer wall and is equipped with second ceramic wear -resistant layer, and the outside of each pipeline and cylinder body is equipped with heat -preserving outer protective layer, and waste heat recovery cylinder is equipped with water inlet pipe, hot water outlet pipe and temperature sensor, can recover the waste heat of flue gas after purification, and the conic part bottom end is connected dust collecting chamber through star type dust unloading valve, and the dust collecting chamber is equipped with the push -plate and shovel plate driven by electric push rod, realizes automatic dust cleaning, the utility model effectively prevents the flue gas temperature too fast drop in the dust removal process, and the wear -resistant life is prolonged, and the waste heat recovery utilization and automatic dust cleaning are considered, solve the heat energy waste, equipment corrosion and blockage problem in high temperature flue dust processing, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of cyclone dust removal technology, specifically to a high-temperature furnace flue gas cyclone dust removal device. Background Technology

[0002] Cyclone dust collectors are a type of dust removal device. The dust removal mechanism involves rotating the dust-laden airflow, using centrifugal force to separate dust particles from the airflow and collect them on the device wall. Then, gravity causes the dust particles to fall into the ash hopper. Cyclone dust collectors are widely used in metallurgy, building materials, chemical industry, boilers and other fields. They have the advantages of simple structure, easy manufacturing, installation and maintenance, and low equipment investment and operating costs.

[0003] While traditional cyclone dust collectors are simple in structure and easy to install and use, they are not suitable for the high-temperature characteristics of high-temperature furnace fumes. Ordinary cyclone dust collectors cannot effectively retain and remove the high-temperature furnace fumes. The rapid cooling of the flue gas not only wastes the waste heat resources of the flue gas, but also easily leads to acid condensation and corrosion of equipment or dust deliquescence and adhesion when the flue gas temperature drops rapidly below the dew point, resulting in blockage and hindering the continuous use of the device. Therefore, those skilled in the art have proposed a high-temperature furnace fume cyclone dust collector. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-temperature furnace flue gas cyclone dust removal device, which has the advantages of effectively preventing the high-temperature furnace flue gas from cooling down rapidly during the dust removal process, and being able to recover the waste heat of the high-temperature furnace flue gas after dust removal in a timely manner, reducing heat energy waste and making it more practical, thereby solving the problems in the aforementioned background technology.

[0006] (II) Technical Solution

[0007] To achieve the advantages of effectively preventing rapid cooling of high-temperature flue gas during dust removal, timely recovery of waste heat from the flue gas after dust removal, reducing heat energy waste, and enhancing practicality, the specific technical solution adopted by this utility model is as follows: A high-temperature flue gas cyclone dust removal device includes a bottom support, a cylindrical part, a conical part, and a waste heat recovery cylinder. A mounting frame is welded to the top surface of the bottom support, and a cylindrical part is welded to the center of the top surface of the mounting frame. A conical part is welded to the bottom end of the cylindrical part. An exhaust pipe is welded to the center of the top surface of the cylindrical part, and the top end of the exhaust pipe is connected to one end of a guide pipe via a flange. A mounting base is welded and fixed to the mounting frame, and a mounting base is welded to... The waste heat recovery cylinder has an acid-resistant heat exchange tube fixedly installed in the center of its inner cavity. The top end of the acid-resistant heat exchange tube is connected to the other end of the gas guide bend. A flue gas inlet pipe is connected to the tangential side of the cylindrical part. A water inlet pipe with an inlet valve is connected to the top side of the inner cavity of the waste heat recovery cylinder. A hot water outlet pipe with an outlet valve is connected to the bottom side of the inner cavity of the waste heat recovery cylinder. A temperature sensor is installed on the inner wall of the waste heat recovery cylinder. A first heat insulation outer protective layer is fixedly installed on the outer wall of the flue gas inlet pipe. A second heat insulation outer protective layer is fixedly installed on the outer walls of the cylindrical and conical parts. A third heat insulation outer protective layer is fixedly installed on the outer wall of the exhaust pipe.

[0008] Furthermore, the inner walls of the cylindrical and conical portions are provided with a first ceramic wear-resistant layer, and the outer wall of the exhaust pipe located in the inner cavity of the cylindrical portion is fixedly equipped with a second ceramic wear-resistant layer.

[0009] Furthermore, a ash discharge pipe is connected to the bottom of the inner cavity of the conical part, and a star-shaped ash discharge valve is installed on the ash discharge pipe. A dust collection chamber is connected to the bottom end of the ash discharge pipe. An electric push rod is bolted to the side wall of the dust collection chamber, and a push plate is connected to the output end of the electric push rod. A shovel plate is symmetrically welded to the top and bottom of one side of the push plate.

[0010] Furthermore, a switch box door is installed on one side of the dust collection chamber opening via a hinge.

[0011] Furthermore, a control panel is fixedly installed on the side wall of the mounting bracket, and the control panel is electrically connected to the temperature sensor, the inlet valve, the outlet valve, the star-shaped ash discharge valve, and the electric push rod.

[0012] Furthermore, the central axes of the cylindrical portion, the conical portion, and the exhaust pipe are on the same straight line.

[0013] Furthermore, the central axes of the waste heat recovery cylinder, the mounting base, and the acid-resistant heat exchange tube are on the same straight line.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a high-temperature furnace flue gas cyclone dust removal device, which has the following beneficial effects:

[0016] (1) This utility model is equipped with a bottom support, a cylindrical part, a conical part and a waste heat recovery cylinder. It adopts the cyclone separation principle and generates strong centrifugal force through tangential air intake to achieve dust separation. The high-temperature flue gas after dust removal enters the acid-resistant heat exchange tube and transfers the waste heat to the water body to generate hot water for use, which significantly reduces heat energy waste. The insulation layer design effectively prevents the flue gas temperature from dropping suddenly and ensures the efficiency of subsequent waste heat recovery. At the same time, the acid-resistant heat exchange tube solves the acid corrosion problem.

[0017] (2) The present invention covers the inner wall of the dust collector and key components with a ceramic wear-resistant layer, which greatly alleviates the scouring and wear of high-speed particles and extends the service life of the device. The dust collection chamber is equipped with a star-shaped ash discharge valve to ensure continuous sealed ash discharge, and combined with the electric push rod to drive the push plate and shovel plate to realize the automatic discharge of dust, avoiding manual cleaning and improving the convenience of operation and sealing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a high-temperature furnace flue gas cyclone dust removal device according to an embodiment of the present utility model;

[0020] Figure 2 This is a side sectional view of the dust collection chamber of a high-temperature furnace flue gas cyclone dust removal device according to an embodiment of the present utility model;

[0021] Figure 3 According to the embodiments of this utility model Figure 1 Enlarged view of point A;

[0022] Figure 4 According to the embodiments of this utility model Figure 1 Enlarged view of point B;

[0023] Figure 5 This is a perspective view of the waste heat recovery cylinder of a high-temperature furnace flue gas cyclone dust removal device according to an embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Flue gas inlet pipe; 2. Cylindrical section; 3. Conical section; 4. Rotary rotary valve; 5. Dust collection chamber; 6. Bottom support; 7. Ash discharge pipe; 8. Control panel; 9. Mounting bracket; 10. Mounting base; 11. Waste heat recovery cylinder; 12. Water inlet pipe; 13. Water inlet valve; 14. Acid-resistant heat exchange tube; 15. Temperature sensor; 16. Air guide bend; 17. Exhaust pipe; 18. Electric push rod; 19. Push plate; 20. Shovel plate; 21. Switch box door; 22. First thermal insulation outer protective layer; 23. Second thermal insulation outer protective layer; 24. Third thermal insulation outer protective layer; 25. First ceramic wear-resistant layer; 26. Second ceramic wear-resistant layer; 27. Hot water outlet pipe; 28. Water outlet valve. Detailed Implementation

[0026] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a high-temperature furnace flue gas cyclone dust removal device is provided.

[0028] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-5 As shown, a high-temperature furnace flue gas cyclone dust removal device according to an embodiment of the present invention includes a bottom support 6, a cylindrical part 2, a conical part 3, and a waste heat recovery cylinder 11. A mounting frame 9 is welded to the top surface of the bottom support 6, and a cylindrical part 2 is welded to the center of the top surface of the mounting frame 9. The bottom end of the cylindrical part 2 is connected to and welded to the conical part 3. An exhaust pipe 17 is welded to the center of the top surface of the cylindrical part 2, and the top end of the exhaust pipe 17 is connected to one end of a guide pipe bend 16 via a flange. A mounting base 10 is welded and fixed to the mounting frame 9, and a waste heat recovery cylinder 11 is welded to the mounting base 10. An acid-resistant heat exchange tube 14 is fixedly installed in the center of the inner cavity of the waste heat recovery cylinder 11. The top end of the heat pipe 14 is connected to the other end of the gas guide bend 16. The tangential side of the cylindrical part 2 is connected to the flue gas inlet pipe 1. The top side of the inner cavity of the waste heat recovery cylinder 11 is connected to the water inlet pipe 12, and the water inlet pipe 12 is equipped with a water inlet valve 13. The bottom side of the inner cavity of the waste heat recovery cylinder 11 is connected to the hot water outlet pipe 27, and the hot water outlet pipe 27 is equipped with a water outlet valve 28. The inner wall of the waste heat recovery cylinder 11 is equipped with a temperature sensor 15. The outer wall of the flue gas inlet pipe 1 is fixedly equipped with a first heat insulation outer protective layer 22. The outer walls of the cylindrical part 2 and the conical part 3 are fixedly equipped with a second heat insulation outer protective layer 23. The outer wall of the exhaust pipe 17 is fixedly equipped with a third heat insulation outer protective layer 24.

[0029] It effectively prevents the high-temperature flue gas from cooling down rapidly during the dust removal process, and can promptly recover the waste heat of the high-temperature flue gas after dust removal, reducing heat energy waste and making it more practical.

[0030] Please refer to Figure 3 The inner walls of the cylindrical part 2 and the conical part 3 are provided with a first ceramic wear-resistant layer 25, and the exhaust pipe 17 located in the inner cavity of the cylindrical part 2 is fixedly installed with a second ceramic wear-resistant layer 26 on the outer wall.

[0031] The use of the first ceramic wear-resistant layer 25 and the second ceramic wear-resistant layer 26 can greatly reduce the wear of high-speed dust particles on key parts of the device, which is beneficial to extending the service life of the device.

[0032] Please refer to Figure 2 The bottom of the inner cavity of the conical part 3 is connected to the ash discharge pipe 7, and the ash discharge pipe 7 is equipped with a star-shaped ash discharge valve 4. The bottom end of the ash discharge pipe is connected to the dust collection chamber 5. The side wall of the dust collection chamber 5 is bolted to the electric push rod 18, and the output end of the electric push rod 18 is connected to the push plate 19. The top and bottom of one side of the push plate 19 are symmetrically welded with shovel plates 20.

[0033] It can quickly push out the dust in the dust collection chamber 5 all at once, without the need for the user to manually remove or shovel the dust, making it more convenient and practical to use.

[0034] Please refer to Figure 2 The dust collection chamber 5 has a switch box door 21 installed on one side of the opening via a hinge.

[0035] Please refer to Figure 1 The control panel 8 is fixedly installed on the side wall of the mounting bracket 9, and the control panel 8 is electrically connected to the temperature sensor 15, the inlet valve 13, the outlet valve 28, the star-shaped ash discharge valve 4, and the electric push rod 18.

[0036] The control circuit of control panel 8 can be implemented by simple programming by those skilled in the art. It is common knowledge in the field. It is only used and not modified. Therefore, the control method and circuit connection will not be described in detail.

[0037] Please refer to Figure 1 The central axes of the cylindrical part 2, the conical part 3, and the exhaust pipe 17 are on the same straight line.

[0038] Please refer to Figure 1 The central axes of the waste heat recovery cylinder 11, the mounting base 10, and the acid-resistant heat exchange tube 14 are on the same straight line.

[0039] Working Principle: This utility model is equipped with a bottom support 6, a cylindrical part 2, a conical part 3, and a waste heat recovery cylinder 11. A mounting bracket 9 is welded to the top surface of the bottom support 6, and the cylindrical part 2 is welded to the center of the top surface of the mounting bracket 9. The bottom end of the cylindrical part 2 is connected to and welded to the conical part 3. An exhaust pipe 17 is welded to the center of the top surface of the cylindrical part 2, and the top end of the exhaust pipe 17 is connected to one end of a guide bend 16 via a flange. A mounting base 10 is welded and fixed to the mounting bracket 9, and the waste heat recovery cylinder 11 is welded to the mounting base 10. An acid-resistant heat exchange tube 14 is fixedly installed in the center of the inner cavity of the waste heat recovery cylinder 11, and the top end of the acid-resistant heat exchange tube 14 is connected to the other end of the guide bend 16. An ash discharge pipe 7 is installed at the bottom of the inner cavity of the conical part 3. Furthermore, a star-shaped ash discharge valve 4 is installed on the ash discharge pipe 7, and a dust collection chamber 5 is connected to the bottom end of the ash discharge pipe. A flue gas inlet pipe 1 is connected to the tangential side of the cylindrical section 2. In use, high-temperature flue gas can enter the cylindrical section 2 at high speed along the tangential direction through the flue gas inlet pipe 1. Under the constraint of the cylinder wall, the airflow changes from linear motion to downward rotating spiral motion, thus generating rotational motion. During the high-speed rotation, the dust particles in the flue gas, due to their much greater density than gas, are subjected to strong centrifugal force and are thrown towards the cylinder wall. The particles thrown towards the cylinder wall collide with the wall surface, lose kinetic energy, and slide down along the inner wall of the conical section 3 under the action of downward airflow and gravity. As the airflow rotates downward to the bottom of the conical section 3, most of the dust has been separated. At this time, the purified airflow is in the conical section. Under the pressure at the bottom of part 3, the gas changes direction and is finally discharged through exhaust pipe 17, achieving dust removal of high-temperature flue gas. A first heat-insulating outer layer 22 is fixedly installed on the outer wall of the flue gas inlet pipe 1, a second heat-insulating outer layer 23 is fixedly installed on the outer walls of the cylindrical part 2 and the conical part 3, and a third heat-insulating outer layer 24 is fixedly installed on the outer wall of exhaust pipe 17. This significantly reduces the outward radiation loss of heat from the high-temperature flue gas and prevents a rapid drop in temperature. Simultaneously, a first ceramic wear-resistant layer 25 is provided on the inner wall of the cylindrical part 2 and the part of exhaust pipe 17 located within the inner cavity of the cylindrical part 2 has a second ceramic wear-resistant layer 26 fixedly installed on its outer wall. The first ceramic wear-resistant layer 25 and the second ceramic wear-resistant layer 26 greatly reduce the impact of high-speed dust particles on the flue gas. Wear on key components helps extend the service life of the device. Furthermore, a water inlet pipe 12 is connected to the top side of the inner cavity of the waste heat recovery cylinder 11, and a water inlet valve 13 is installed on the water inlet pipe 12. A hot water outlet pipe 27 is connected to the bottom side of the inner cavity of the waste heat recovery cylinder 11, and a water outlet valve 28 is installed on the hot water outlet pipe 27. In use, water can be first filled into the inner cavity of the waste heat recovery cylinder 11 through the water inlet pipe 12. When the high-temperature flue gas after dust removal enters the inner cavity of the acid-resistant heat exchange tube 14 through the air guide bend 16, the waste heat of the high-temperature flue gas is used to heat the water. A temperature sensor 15 is fixedly installed inside the inner cavity of the waste heat recovery cylinder 11. When the water is heated to the set temperature, the temperature sensor 15 feeds back the signal to the control panel 8.The control panel 8 can open the water outlet valve 28, allowing hot water to be discharged through the hot water outlet pipe 27, thus achieving preliminary and timely recovery of waste heat from the high-temperature flue gas. At this point, most of the dust in the flue gas has been removed, so there is no need to worry about dust deliquescence and adhesion. The acid-resistant heat exchange tube 14 is also not afraid of acid condensation corrosion. This allows the high-temperature flue gas cyclone dust collector to effectively prevent the high-temperature flue gas from cooling down rapidly during the dust removal process, and to recover waste heat from the high-temperature flue gas after dust removal in a timely manner, reducing heat energy waste and making it more practical. In addition, this utility model is equipped with a dust collection chamber 5, a push plate 19, and a shovel plate 20. As mentioned above, the dust particles separated from the high-temperature flue gas fall and accumulate at the bottom of the conical part 3. The user can discharge the dust into the dust collection chamber 5 through the star-shaped ash discharge valve 4. The ash valve 4 can continuously discharge ash and effectively seal, preventing the intake of external cold air, which would disrupt the internal flow field of the cylindrical section 2 and the conical section 3 and lower the temperature. A switch box door 21 is hinged to one side of the dust collection chamber 5. When enough dust accumulates in the dust collection chamber 5, the user can close the star-shaped ash discharge valve 4 and then open the switch box door 21. An electric push rod 18 is bolted to the side wall of the dust collection chamber 5, and a push plate 19 is connected to the output end of the electric push rod 18. A scraper plate 20 is symmetrically welded to the top and bottom of one side of the push plate 19. Activating the electric push rod 18 moves the push plate 19 and the scraper plate 20, quickly and easily expelling the dust from the dust collection chamber 5 without requiring manual shoveling or scraping, making it more convenient and practical.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature furnace flue gas cyclone dust removal device, comprising a bottom support (6), a cylindrical section (2), a conical section (3), and a waste heat recovery cylinder (11), characterized in that, A mounting bracket (9) is welded to the top surface of the bottom support (6), and a cylindrical part (2) is welded to the center of the top surface of the mounting bracket (9). A conical part (3) is welded to the bottom end of the cylindrical part (2). An exhaust pipe (17) is welded to the center of the top surface of the cylindrical part (2), and the top end of the exhaust pipe (17) is connected to one end of a gas guide bend (16) via a flange. A mounting base (10) is welded and fixed on the mounting bracket (9), and a waste heat recovery cylinder (11) is welded to the mounting base (10). An acid-resistant heat exchange tube (14) is fixedly installed in the center of the inner cavity of the waste heat recovery cylinder (11). The top end of the acid-resistant heat exchange tube (14) is connected to the other end of the gas guide bend (16). The tangent of the cylindrical part (2) is... A flue gas inlet pipe (1) is connected to the side of the waste heat recovery cylinder (11). A water inlet pipe (12) is connected to the top side of the inner cavity of the waste heat recovery cylinder (11), and a water inlet valve (13) is installed on the water inlet pipe (12). A hot water outlet pipe (27) is connected to the bottom side of the inner cavity of the waste heat recovery cylinder (11), and a water outlet valve (28) is installed on the hot water outlet pipe (27). A temperature sensor (15) is installed on the inner wall of the waste heat recovery cylinder (11). A first heat-insulating outer protective layer (22) is fixedly installed on the outer wall of the flue gas inlet pipe (1). A second heat-insulating outer protective layer (23) is fixedly installed on the outer walls of the cylindrical part (2) and the conical part (3). A third heat-insulating outer protective layer (24) is fixedly installed on the outer wall of the exhaust pipe (17).

2. The high-temperature furnace flue gas cyclone dust removal device according to claim 1, characterized in that, The inner walls of the cylindrical part (2) and the conical part (3) are provided with a first ceramic wear-resistant layer (25), and the exhaust pipe (17) located in the inner cavity of the cylindrical part (2) is fixedly installed with a second ceramic wear-resistant layer (26) on the outer wall.

3. The high-temperature furnace flue gas cyclone dust collector according to claim 1, characterized in that, The bottom of the inner cavity of the conical part (3) is connected to a ash discharge pipe (7), and a star-shaped ash discharge valve (4) is installed on the ash discharge pipe (7). The bottom end of the ash discharge pipe is connected to a dust collection chamber (5). An electric push rod (18) is bolted to the side wall of the dust collection chamber (5), and a push plate (19) is connected to the output end of the electric push rod (18). A shovel plate (20) is symmetrically welded to the top and bottom of one side of the push plate (19).

4. The high-temperature furnace flue gas cyclone dust collector according to claim 3, characterized in that, The dust collection chamber (5) has a switch box door (21) installed on one side of the opening via a hinge.

5. The high-temperature furnace flue gas cyclone dust collector according to claim 1, characterized in that, The mounting bracket (9) has a control panel (8) fixedly installed on its side wall, and the control panel (8) is electrically connected to the temperature sensor (15), the inlet valve (13), the outlet valve (28), the star-shaped ash discharge valve (4), and the electric push rod (18).

6. The high-temperature furnace flue gas cyclone dust collector according to claim 1, characterized in that, The central axes of the cylindrical part (2), the conical part (3) and the exhaust pipe (17) are on the same straight line.

7. The high-temperature furnace flue gas cyclone dust collector according to claim 1, characterized in that, The central axes of the waste heat recovery cylinder (11), the mounting base (10), and the acid-resistant heat exchange tube (14) are on the same straight line.

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