High-temperature flue gas treatment device
By using heat exchange tubes and multi-stage dust filter plates in the flue gas treatment device of biomass boiler combined with the design of atomization spray head, the problems of poor flue gas treatment effect and easy blockage of the dust filter plate are solved, and efficient flue gas filtration and cooling effects are achieved.
Patent Information
- Application Number
- CN202422304252.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-21
AI Technical Summary
The flue gas treatment devices of existing biomass boilers have problems such as poor flue gas treatment effect and easy blockage of dust filter plates, which affect the use effect.
Heat exchange pipes are used to cool down heat, and multi-stage filtration is carried out through multiple sets of stacked dust filter plates. Combined with the atomized spray nozzle, water mist is sprayed to cool down the flue gas and clean the dust filter plate to prevent clogging.
It realizes efficient flue gas filtration and decontamination, prevents dust filter plates from being blocked, and improves the service life of the device and the flue gas treatment effect.
Smart Images
Figure CN223192176U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler equipment, in particular to a high-temperature flue gas treatment device. Background Art
[0002] A biomass boiler is a type of boiler that uses biomass energy as fuel. The efficiency of a biomass boiler is generally above 80%, which is 15% higher than the average efficiency level of a coal-fired boiler. However, after combustion, it will produce a large amount of high-temperature dust-laden flue gas. If it is directly discharged into the atmosphere, it will cause certain pollution to the environment. Although there are many flue gas recovery and utilization devices on the market, the existing flue gas recovery and utilization devices on the market generally have the following defects: 1. The flue gas treatment effect is poor and the flue gas cannot be effectively filtered and impurities removed; 2. The dust filter plate is easily clogged if it is not cleaned in time after long-term use, affecting its use. Utility Model Content
[0003] In response to the above-mentioned deficiencies in the prior art, the present invention provides a high-temperature flue gas treatment device, including an insulation box and a heat exchange box, wherein the heat exchange box is located inside the insulation box, a heat exchange pipe is wound around the outside of the heat exchange box, the lower end of the heat exchange pipe is connected to a water inlet pipe, the upper end of the heat exchange pipe is connected to a drain pipe, one side of the drain pipe is connected to a water guide pipe, the upper part of the inner wall of the heat exchange box is connected to an annular water pipe, the other end of the water guide pipe is sealed and passes through the inner wall of the heat exchange box and is connected to the annular water pipe, a plurality of groups of atomizing nozzles are evenly connected on a side wall of the annular water pipe away from the heat exchange box, a plurality of groups of dust filter plates are evenly arranged from top to bottom inside the heat exchange box, a drainage bucket is connected to the lower side wall of the heat exchange box, a smoke inlet pipe is provided at the lower part of one side wall of the heat exchange box, and a smoke exhaust fan is passed through the upper side wall of the heat exchange box.
[0004] As an improvement: the other ends of the water inlet pipe, the drainage pipe, the drainage hopper and the smoke inlet pipe respectively pass through the insulation box.
[0005] As an improvement: the half section of the smoke inlet pipe close to the heat exchange box is a downward inclined structure.
[0006] As an improvement: a mounting plate is provided on the outer side of the upper side of the heat exchange box, and the mounting plate is connected to the upper side wall of the insulation box with a threaded connection.
[0007] As an improvement: the mesh apertures of the multiple groups of dust filter plates increase from small to large from top to bottom.
[0008] As an improvement: a drying box is installed on the upper side of the insulation box, and support rods are provided at the four corners of the lower side of the drying box respectively connected to the upper side of the insulation box. The upper end of the smoke exhaust fan passes through the lower side wall of the drying box, and a smoke exhaust port is provided on one side wall of the drying box.
[0009] Compared with the prior art, the advantages of the present invention are as follows: cooling liquid is fed into the heat exchange tube, and heat is released to the high-temperature flue gas through the heat exchange tube wrapped around the outside of the heat exchange box, and the smoke dust particles in the high-temperature flue gas are filtered in multiple stages through multiple groups of dust filter plates, a small part of the cooling liquid is fed into the inside of the annular water pipe, and water mist is sprayed through multiple groups of atomizing nozzles to cool down and reduce dust in the high-temperature flue gas in the heat exchange box, thereby increasing the spraying speed of the atomizing nozzle, and the multiple groups of dust filter plates can be cleaned and sprayed by water mist, so that the present invention has a good filtering and impurity removal effect, is convenient for basic cleaning of the dust filter plates, is not easy to be blocked, and the dust filter plates can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a structural diagram of a high-temperature flue gas treatment device of the utility model;
[0011] Figure 2 This is a schematic diagram of the internal and external connection structure of a heat exchange box of a high-temperature flue gas treatment device of the utility model;
[0012] Reference table of accompanying symbols:
[0013] 1. Insulation box; 2. Heat exchange box; 3. Heat exchange tube; 4. Water inlet pipe; 5. Drain pipe; 6. Water guide pipe; 7. Annular water pipe; 8. Atomizing nozzle; 9. Dust filter plate; 10. Drain bucket; 11. Support rod; 12. Smoke inlet pipe; 13. Mounting plate; 14. Smoke exhaust fan; 15. Drying box; 16. Smoke exhaust port. DETAILED DESCRIPTION
[0014] The specific implementation of the present utility model will be further described below with reference to the accompanying drawings.
[0015] like Figure 1-Figure 2 As shown, a high-temperature flue gas treatment device includes an insulation box 1 and a heat exchange box 2. The heat exchange box 2 is located inside the insulation box 1. A mounting plate 13 is provided on the upper external side of the heat exchange box 2. The mounting plate 13 is connected to the upper side wall of the insulation box 1 with a threaded connection. The heat exchange box 2 passes through the upper side wall of the insulation box 1. The heat exchange box 2 can be stably installed inside the insulation box 1 through the mounting plate 13.
[0016] A heat exchange tube 3 is wrapped around the outside of the heat exchange box 2, and the lower end of the heat exchange tube 3 is connected to a water inlet pipe 4, and the upper end of the heat exchange tube 3 is connected to a drain pipe 5. One side of the drain pipe 5 is connected to a water guide pipe 6, and the upper part of the inner wall of the heat exchange box 2 is connected to an annular water pipe 7, and the other end of the water guide pipe 6 is sealed and penetrates the inner wall of the heat exchange box 2 and is connected to the annular water pipe 7. A plurality of groups of atomizing nozzles 8 are evenly connected on the side wall of the annular water pipe 7 away from the heat exchange box 2, and a plurality of groups of dust filter plates 9 are evenly provided from top to bottom inside the heat exchange box 2. A drainage bucket 10 is connected to the lower side wall of the heat exchange box 2, and a smoke inlet pipe 12 is provided at the lower part of one side wall of the heat exchange box 2. A smoke exhaust fan 14 is passed through the upper side wall of the heat exchange box 2, and the other ends of the water inlet pipe 4, drain pipe 5, drainage bucket 10 and smoke inlet pipe 12 respectively pass through the insulation box 1.
[0017] The high-temperature dust-laden flue gas is sent to the bottom of the heat exchange box 2 through the smoke inlet pipe 12, and the high-temperature dust-laden flue gas flows upward due to the suction force of the smoke exhaust fan 14. The coolant is sent to the inside of the heat exchange tube 3 through the water inlet pipe 4. Due to the thermal conductivity of the heat exchange tube 3 and the heat exchange box 2, the coolant in the water inlet pipe 4 exchanges heat with the high-temperature dust-laden flue gas. Most of the coolant after heat exchange is discharged through the drain pipe 5 for treatment, and a small part enters the inside of the annular water pipe 7 through the water guide pipe 6. Water mist is sprayed through multiple groups of atomizing nozzles 8 to cool down and reduce dust on the high-temperature dust-laden flue gas inside the heat exchange box 2. The water mist falls on the multiple groups of dust filter plates 9, takes away the smoke on the multiple groups of dust filter plates 9, forms water droplets that fall into the drainage bucket 10, and is discharged in a centralized manner.
[0018] The half section of the smoke inlet pipe 12 close to the heat exchange box 2 is a downwardly inclined structure to prevent water droplets from entering the interior of the smoke inlet pipe 12 .
[0019] The mesh apertures of the multiple groups of dust filter plates 9 increase from small to large from top to bottom, and the high-temperature dust-containing flue gas is filtered in multiple stages from bottom to top.
[0020] A drying box 15 is provided on the upper side of the heat preservation box 1, and support rods 11 are provided at the four corners of the lower side of the drying box 15, which are respectively connected to the upper side of the heat preservation box 1. The upper end of the smoke exhaust fan 14 passes through the lower side wall of the drying box 15, and a smoke exhaust port 16 is provided on one side wall of the drying box 15. The smoke exhaust fan 14 sends the moist flue gas after cooling and dust reduction to the interior of the drying box 15, and absorbs part of the moisture in the flue gas through the desiccant in the drying box 15, and then the flue gas is either discharged or subjected to other reaction treatments.
[0021] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the scope of protection of the present utility model patent.
Claims
1. A high-temperature flue gas treatment device, comprising an insulation box (1) and a heat exchange box (2), wherein the heat exchange box (2) is located inside the insulation box (1), and is characterized in that: The heat exchange box (2) is wound with a heat exchange tube (3) on the outside, the lower end of the heat exchange tube (3) is connected to a water inlet pipe (4), the upper end of the heat exchange tube (3) is connected to a drain pipe (5), one side of the drain pipe (5) is connected to a water guide pipe (6), the upper part of the inner wall of the heat exchange box (2) is connected to an annular water pipe (7), the other end of the water guide pipe (6) is sealed and penetrates the inner wall of the heat exchange box (2) and is connected to the annular water pipe (7), a plurality of groups of atomizing nozzles (8) are evenly connected on the side wall of the annular water pipe (7) away from the heat exchange box (2), a plurality of groups of dust filter plates (9) are evenly provided from top to bottom inside the heat exchange box (2), a drainage bucket (10) is connected to the lower side wall of the heat exchange box (2), a smoke inlet pipe (12) is provided on the lower side wall of the heat exchange box (2), and a smoke exhaust fan (14) is passed through and connected to the upper side wall of the heat exchange box (2).
2. The high-temperature flue gas treatment device according to claim 1, characterized in that: The other ends of the water inlet pipe (4), the drainage pipe (5), the drainage bucket (10) and the smoke inlet pipe (12) respectively pass through the heat preservation box (1).
3. The high-temperature flue gas treatment device according to claim 1, characterized in that: The half section of the smoke inlet pipe (12) close to the heat exchange box (2) is a downwardly inclined structure.
4. The high-temperature flue gas treatment device according to claim 1, characterized in that: The upper side of the heat exchange box (2) is externally connected with a mounting plate (13), and the mounting plate (13) is connected to the upper side wall of the heat preservation box (1) through a threaded connection.
5. The high-temperature flue gas treatment device according to claim 1, characterized in that: The mesh apertures of the plurality of groups of dust filter plates (9) are arranged from small to large from top to bottom.
6. The high-temperature flue gas treatment device according to claim 1, characterized in that: A drying box (15) is installed on the upper side of the heat preservation box (1), and support rods (11) are respectively connected to the upper side of the heat preservation box (1) at the four corners of the lower side of the drying box (15). The upper end of the smoke exhaust fan (14) passes through the lower side wall of the drying box (15), and a smoke exhaust port (16) is provided on one side wall of the drying box (15).