Boiler convenient for flue gas recovery

Abstract

The utility model discloses a boiler convenient for flue gas recovery, which comprises a boiler body, one side of the boiler body is connected with a cyclone separator, one side of the cyclone separator is connected with a filter box, an adsorption filter mechanism is arranged in the filter box, the other side of the filter box is connected with an induced draft fan, and the output end of the induced draft fan is connected with a gas conveying pipe and a gas conveying branch pipe. According to the utility model, flue gas can be subjected to primary purification treatment through the cyclone separator, the flue gas can be further filtered through the adsorption filtering mechanism, and purified gas can be conveyed to equipment needing heat supply through the gas conveying pipe to be recycled; according to the flue gas purifying device, water can be heated by one part of gas through the heat exchange pipes and the fins, the heat exchange efficiency between the heat exchange pipes and the water can be improved through the stirring mechanism, and through the arrangement, flue gas purifying treatment is facilitated, pollution to the environment is reduced, and meanwhile the flue gas recycling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler waste heat recovery, in particular to a boiler which is convenient for flue gas recovery. Background Art

[0002] A boiler is an energy conversion device. The energy input into the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. When a thermal power plant recovers waste heat from the boiler, the general method is to directly extract and utilize the flue gas discharged from the boiler.

[0003] The commonly used boiler waste heat recovery device, in actual use, directly passes the flue gas pipe into the cold water of the recovery box, the recovery efficiency is not high, and after the recycling is completed, the flue gas is directly discharged to the outside without any purification treatment, which will cause certain pollution to the environment.

[0004] Therefore, a boiler that is convenient for flue gas recovery is needed to solve the problems raised in the above background technology. Utility Model Content

[0005] In view of the above problems, the utility model provides a boiler which is convenient for flue gas recovery.

[0006] The utility model provides the following technical solutions: a boiler that is convenient for flue gas recovery, comprising a boiler body, wherein the flue gas exhaust pipe of the boiler body is connected to the air inlet pipe of a cyclone separator installed on the inner side of a support frame, the exhaust port of the cyclone separator is connected to a filter box through a connecting pipe, the interior of the filter box is provided with an adsorption and filtering mechanism that is convenient for flue gas filtering, the other side of the filter box is connected to an induced draft fan through the connecting pipe, the output end of the induced draft fan is connected to an air supply pipe, one end of the air supply pipe is provided with a flange, the middle section of the air supply pipe is provided with an air supply branch pipe connected to a water storage tank, the interior of the water storage tank is provided with a heat exchange pipe connected to the air supply branch pipe, the other end of the heat exchange pipe extends to the outside of the water storage tank and is connected to one end of an exhaust valve, and the inner side of the water storage tank is provided with a stirring mechanism that improves heat exchange efficiency;

[0007] The adsorption and filtration mechanism includes a filter screen and an activated carbon adsorption plate. Two groups of slide seats are correspondingly provided at the inner top and bottom of the filter box. The inner sides of the two groups of slide seats are slidably connected with mounting frames. The filter screen and the activated carbon adsorption plate are respectively installed on the inner sides of the two groups of mounting frames.

[0008] In a further technical solution, a box door is hinged on one side of the filter box, and when the box door is in a closed state, the box door conflicts with one side of the two groups of mounting frames.

[0009] In a further technical solution, valves are installed near the ends of the gas supply pipe and the gas supply branch pipe.

[0010] In a further technical solution, the heat exchange tube is arranged in a spiral shape, and the outer ring of the heat exchange tube is provided with multiple groups of fins.

[0011] In a further technical solution, the stirring mechanism includes a motor installed on one side of the water tank, a rotating drum is rotatably connected to the inner side of the water tank, a plurality of stirring plates are provided on the inner wall of the rotating drum, a rack belt is provided on the outer wall of the rotating drum near the top, a through groove is provided on one side of the water tank, a driving gear connected to the output end of the motor passes through the inner side of the through groove, and the driving gear is meshed with the rack belt.

[0012] In a further technical solution, an output pipe is installed on one side of the water storage tank.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can transport the flue gas generated in the boiler body to the inside of the cyclone separator through the connection between the boiler body and the cyclone separator. Under the action of the cyclone separator, the dust and solid particles in the flue gas can be separated from the airflow, so that the flue gas can be preliminarily purified. The purified flue gas can enter the filter box through the connecting pipe. Under the action of the induced draft fan, the flue gas can be driven to pass through the filter screen and the activated carbon adsorption plate in sequence, so that the flue gas can be further filtered, which greatly improves the purification effect of the flue gas. Furthermore, through the setting, the purification of the flue gas can be facilitated, and the pollution to the environment can be effectively reduced.

[0015] 2. The high-temperature gas purified by the utility model can be transported to the equipment requiring heating through the gas transmission pipe for recycling. Through the arranged gas transmission branch pipe, a part of the high-temperature gas can be transported to the water storage tank. Through the action of the heat exchange pipe, the water inside the water storage tank can be heated, so as to achieve the purpose of heat recovery and utilization. Through the arranged exhaust valve, the discharge of the airflow after heat exchange can be facilitated. Through the arranged stirring mechanism, the heat exchange efficiency between the heat exchange pipe and water can be improved, and then through the arrangement, the recovery efficiency of the flue gas is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a side view of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the filter box;

[0019] Figure 4 It is a top view of a section of a water tank;

[0020] Figure 5 for Figure 4 Enlarged view of part A in .

[0021] In the figure: 1, boiler body, 2, smoke exhaust pipe, 3, cyclone separator, 4, air inlet pipe, 5, support frame, 6, connecting pipe, 7, filter box, 8, box door, 9, slide seat, 10, mounting frame, 11, filter screen, 12, activated carbon adsorption plate, 13, induced draft fan, 14, gas pipe, 15, gas branch pipe, 16, water storage tank, 17, valve, 18, heat exchange pipe, 19, exhaust valve, 20, fin, 21, rotating drum, 22, stirring plate, 23, through groove, 24, rack belt, 25, driving gear, 26, motor, 27, output pipe. DETAILED DESCRIPTION

[0022] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0023] Example:

[0024] Reference Figure 1-Figure 5 A boiler for facilitating flue gas recovery comprises a boiler body 1, a flue gas exhaust pipe 2 of the boiler body 1 is connected to an air inlet pipe 4 of a cyclone separator 3 installed on the inner side of a support frame 5, an exhaust port of the cyclone separator 3 is connected to a filter box 7 through a connecting pipe 6, an adsorption filtering mechanism for facilitating flue gas filtering is arranged inside the filter box 7, an induced draft fan 13 is connected to the other side of the filter box 7 through a connecting pipe 6, an output end of the induced draft fan 13 is connected to an air supply pipe 14, one end of the air supply pipe 14 is provided with a flange, a gas supply branch pipe 15 connected to a water storage tank 16 is arranged in the middle section of the air supply pipe 14, a heat exchange pipe 18 connected to the gas supply branch pipe 15 is arranged inside the water storage tank 16, the other end of the heat exchange pipe 18 extends to the outside of the water storage tank 16 and is connected to one end of an exhaust valve 19, and a stirring mechanism for improving heat exchange efficiency is arranged inside the water storage tank 16;

[0025] The adsorption and filtration mechanism includes a filter screen 11 and an activated carbon adsorption plate 12. Two groups of slide seats 9 are correspondingly provided at the top and bottom of the inner side of the filter box 7. The inner sides of the two groups of slide seats 9 are slidably connected with mounting frames 10. The inner sides of the two groups of mounting frames 10 are respectively installed with the filter screen 11 and the activated carbon adsorption plate 12.

[0026] Specifically, through the connection between the boiler body 1 and the cyclone separator 3, the flue gas generated in the boiler body 1 can be transported to the inside of the cyclone separator 3. Under the action of the cyclone separator 3, the dust and solid particles in the flue gas can be separated from the airflow, so that the flue gas can be preliminarily purified. The purified flue gas can enter the filter box 7 through the connecting pipe 6. Under the action of the induced draft fan 13, the flue gas can be driven to pass through the filter screen 11 and the activated carbon adsorption plate 12 in sequence, so that the flue gas can be further filtered, which greatly improves the purification effect of the flue gas. The purified high-temperature gas can The heat is transported to the equipment requiring heat supply through the gas pipe 14 for recycling. A part of the high-temperature gas can be transported to the water tank 16 through the gas branch pipe 15. The water inside the water tank 16 can be heated by the heat exchange pipe 18, so as to achieve the purpose of heat recovery. The exhaust valve 19 can facilitate the discharge of the airflow after heat exchange. The stirring mechanism can improve the heat exchange efficiency between the heat exchange pipe 18 and water. Furthermore, the above structure can facilitate the purification of the flue gas, effectively reduce the pollution to the environment, and greatly improve the recovery efficiency of the flue gas.

[0027] Among them, a door 8 is hinged on one side of the filter box 7. When the door 8 is in a closed state, the door 8 conflicts with one side of the two sets of mounting frames 10. The setting of the door 8 and the slidingly connected mounting frames 10 can facilitate the cleaning and replacement of the filter screen 11 and the activated carbon adsorption plate 12.

[0028] Among them, valves 17 are installed near the ends of the gas pipeline 14 and the gas branch pipe 15. The opening and closing of the gas pipeline 14 and the gas branch pipe 15 can be conveniently controlled by the provided valves 17.

[0029] The heat exchange tube 18 is arranged in a spiral shape, and a plurality of groups of fins 20 are arranged on the outer ring of the heat exchange tube 18. The heat exchange efficiency can be effectively improved by arranging the spiral heat exchange tube 18 and the plurality of groups of fins 20.

[0030] Among them, the stirring mechanism includes a motor 26 installed on one side of the water tank 16, and a rotating drum 21 is rotatably connected to the inner side of the water tank 16. A plurality of stirring plates 22 are provided on the inner wall of the rotating drum 21, and a rack belt 24 is provided on the outer wall of the rotating drum 21 near the top. A through groove 23 is opened on one side of the water tank 16, and a driving gear 25 connected to the output end of the motor 26 passes through the inner side of the through groove 23. The driving gear 25 is meshed with the rack belt 24. By starting the motor 26, the motor 26 can drive the driving gear 25 to rotate. The driving gear 25 can drive the rotating drum 21 to rotate through the meshing action with the rack belt 24. The rotating drum 21 can drive the plurality of stirring plates 22 to rotate. Under the action of the plurality of stirring plates 22, the water inside the water tank 16 can be stirred, so that the water can fully contact the heat exchange tube 18 and the fin 20, further improving the heat exchange efficiency and ensuring the heat recovery efficiency.

[0031] An output pipe 27 is installed on one side of the water tank 16 , and the output pipe 27 can facilitate the output and utilization of the hot water in the water tank 16 .

[0032] Working principle: First, the flue gas generated in the boiler body 1 can be transported to the inside of the cyclone separator 3. The cyclone separator 3 can separate the dust and solid particles in the flue gas from the air flow, so as to preliminarily purify the flue gas. The purified flue gas can enter the filter box 7 through the connecting pipe 6. Under the action of the induced draft fan 13, the flue gas can be driven to pass through the filter screen 11 and the activated carbon adsorption plate 12 in turn, so as to further filter the flue gas, which greatly improves the purification effect of the flue gas. The purified high-temperature gas can be transported to the equipment that needs heating through the gas pipe 14. For recycling, a part of the high-temperature gas can be transported to the water tank 16 through the gas transmission branch pipe 15. Under the action of the heat exchange tube 18 and the fin 20, the water can be heated, so as to achieve the purpose of heat recovery and utilization. By starting the motor 26, the motor 26 can drive the driving gear 25 to rotate, the driving gear 25 can drive the rotating drum 21 to rotate, and the rotating drum 21 can drive the multiple groups of stirring plates 22 to rotate, so that the water inside the water tank 16 can be stirred, so that the water can fully contact the heat exchange tube 18 and the fin 20, further improving the heat exchange efficiency, and then completing the entire operation process.

[0033] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A boiler for facilitating flue gas recovery, comprising a boiler body, characterized in that: The smoke exhaust pipe of the boiler body is connected to the air inlet pipe of the cyclone separator installed on the inner side of the support frame, the exhaust port of the cyclone separator is connected to a filter box through a connecting pipe, the interior of the filter box is provided with an adsorption and filtering mechanism for facilitating smoke filtering, the other side of the filter box is connected to an induced draft fan through the connecting pipe, the output end of the induced draft fan is connected to an air supply pipe, one end of the air supply pipe is provided with a flange, the middle section of the air supply pipe is provided with an air supply branch pipe connected to a water storage tank, the interior of the water storage tank is provided with a heat exchange pipe connected to the air supply branch pipe, the other end of the heat exchange pipe extends to the outside of the water storage tank and is connected to one end of the exhaust valve, and the inner side of the water storage tank is provided with a stirring mechanism for improving heat exchange efficiency; The adsorption and filtration mechanism includes a filter screen and an activated carbon adsorption plate. Two groups of slide seats are correspondingly provided at the inner top and bottom of the filter box. The inner sides of the two groups of slide seats are slidably connected with mounting frames. The filter screen and the activated carbon adsorption plate are respectively installed on the inner sides of the two groups of mounting frames.

2. A boiler for facilitating flue gas recovery according to claim 1, characterized in that: A box door is hinged on one side of the filter box. When the box door is in a closed state, the box door conflicts with one side of the two groups of mounting frames.

3. A boiler for facilitating flue gas recovery according to claim 1, characterized in that: Valves are installed near the ends of the gas delivery pipe and the gas delivery branch pipe.

4. A boiler for facilitating flue gas recovery according to claim 3, characterized in that: The heat exchange tube is arranged in a spiral shape, and the outer ring of the heat exchange tube is provided with multiple groups of fins.

5. A boiler for facilitating flue gas recovery according to claim 4, characterized in that: The stirring mechanism includes a motor installed on one side of the water tank, a rotating drum is rotatably connected to the inner side of the water tank, a plurality of stirring plates are provided on the inner wall of the rotating drum, a rack belt is provided on the outer wall of the rotating drum near the top, a through groove is opened on one side of the water tank, a driving gear connected to the output end of the motor passes through the inner side of the through groove, and the driving gear is meshed with the rack belt.

6. A boiler for facilitating flue gas recovery according to claim 5, characterized in that: An output pipe is installed on one side of the water storage tank.

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