Boiler with tail gas treatment device

Abstract

The utility model discloses a boiler with a tail gas treatment device, which belongs to the technical field of boilers and comprises a boiler body, a heat exchange box and a filter box are arranged on one side of the boiler body, a first induced draft fan is arranged between the heat exchange box and the filter box, and a gas inlet end of the first induced draft fan is communicated with a first gas outlet pipe. The air outlet end of the first induced draft fan communicates with a second air inlet pipe. A second air outlet pipe is arranged on the right side of the filter box. Two sets of heat exchange pipes are arranged in the heat exchange box side by side, and a plurality of filter screens and activated carbon plates are arranged in the filter box. The heat exchange box is arranged on one side of the boiler body, tail gas firstly enters the heat exchange box, heat exchange is conducted through the heat exchange pipe, heat carried in the tail gas is recycled, and energy waste is reduced; and the tail gas subjected to heat exchange treatment enters a filter box to be treated, dust in the tail gas is filtered and collected through filter screens with different mesh numbers and then is treated in a centralized mode, and harmful substances in the tail gas are adsorbed through an activated carbon plate and are prevented from polluting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a boiler with a tail gas treatment device. Background Art

[0002] A boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electrical energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Boilers are commonly used equipment in industry, and the exhaust gas after boiler combustion contains a large amount of impurities and dust.

[0003] A Chinese patent with application number 202320053230.9 discloses a boiler with an exhaust gas purification device. In the patent, the exhaust gas generated after the combustion of the boiler body enters the dust collecting box through a connecting pipe. By turning on the fan, the air guide pipe sucks the exhaust gas into the purification box through the suction hole. The dust in the exhaust gas will be blocked by the filter bag. After the exhaust gas enters the purification box, the water pump is turned on. The water pump transfers the sodium hydroxide solution in the water tank to the nozzle to spray the exhaust gas. The sodium hydroxide solution reacts with the gas to purify the harmful substances in the exhaust gas. The exhaust gas is finally filtered through an activated carbon plate and discharged from the purification box by the fan through an exhaust pipe to complete the purification and discharge of the exhaust gas. The exhaust gas after the boiler is burned carries a large amount of heat, and direct discharge will cause a waste of heat energy. The exhaust gas purification device recorded in the patent document cannot recycle the heat in the exhaust gas, resulting in a waste of energy. Utility Model Content

[0004] The utility model aims to provide a boiler with an exhaust gas treatment device, so as to solve the problem that the boiler with an exhaust gas treatment device in the prior art cannot recycle the heat in the exhaust gas, thus causing energy waste.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a boiler with an exhaust gas treatment device, comprising a boiler body, a heat exchange box and a filter box are arranged on one side of the boiler body, the heat exchange box is connected with the air outlet of the boiler body through a first air inlet pipe, a first induced draft fan is arranged between the heat exchange box and the filter box, the air inlet end of the first induced draft fan is connected with the first air outlet pipe on the right side of the heat exchange box, the air outlet end of the first induced draft fan is connected with the second air inlet pipe on the left side of the filter box, and a second air outlet pipe is arranged on the right side of the filter box; two groups of heat exchange tubes are arranged in parallel inside the heat exchange box, a plurality of filters are arranged inside the filter box, and an activated carbon plate is arranged on one side of the filter box close to the second air outlet pipe.

[0007] Furthermore, a bracket is provided inside the heat exchange box, and two groups of heat exchange tubes are installed on the front and rear sides of the bracket.

[0008] Furthermore, a water inlet pipe is arranged at the upper end of the heat exchange tube, and a water outlet pipe is arranged at the lower end of the heat exchange tube.

[0009] Furthermore, the mesh sizes of the plurality of filters increase sequentially from left to right.

[0010] Furthermore, a mounting seat is provided on the bottom plate of the filter box, a slot matching the filter screen and the activated carbon board is provided on the mounting seat, a fixing plate is provided on the top surface of the filter screen or the activated carbon board, a pull rod is connected to the top surface of the fixing plate, and a mounting hole matching the filter screen or the activated carbon board is opened on the top surface of the filter box. After the filter screen or the activated carbon board is inserted into the interior of the filter box through the mounting hole, the fixing plate is connected to the filter box by bolts.

[0011] Furthermore, a first valve is installed on the first air intake pipe.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are:

[0013] The utility model arranges a heat exchange box on one side of the boiler body, so that the exhaust gas first enters the heat exchange box, and heat exchange is carried out by using heat exchange tubes, so that the heat carried in the exhaust gas is recovered and reused, thereby reducing energy waste; the exhaust gas after heat exchange treatment then enters the filter box for treatment, and the dust in the exhaust gas is filtered through filters with different mesh sizes, and after collection, it is centrally processed, and the activated carbon plate is used to adsorb harmful substances in the exhaust gas to prevent it from polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 This is a front view of a boiler with an exhaust gas treatment device according to the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the heat exchange box and the filter box of the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the bracket and heat exchange tube of the utility model;

[0018] Figure 4 It is a side view of the bracket and heat exchange tube of the utility model;

[0019] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0020] Explanation of the reference numerals: 1. boiler body; 2. heat exchange box; 3. filter box; 4. first air inlet pipe; 401. first valve; 5. first air outlet pipe; 6. first induced draft fan; 7. second air inlet pipe; 8. second air outlet pipe; 9. bracket; 901. support rod; 10. heat exchange tube; 11. water inlet pipe; 12. water outlet pipe; 13. filter screen; 14. activated carbon plate; 15. mounting seat; 1501. slot; 16. fixing plate; 17. pull rod. DETAILED DESCRIPTION

[0021] like Figure 1-5 As shown, a boiler with an exhaust gas treatment device comprises a boiler body 1, a heat exchange box 2 and a filter box 3 are arranged on one side of the boiler body 1, the heat exchange box 2 is connected with the air outlet of the boiler body 1 through a first air inlet pipe 4, a first valve 401 is installed on the first air inlet pipe 4, a first induced draft fan 6 is installed between the heat exchange box 2 and the filter box 3, the air inlet end of the first induced draft fan 6 is connected with the first air outlet pipe 5 on the right side of the heat exchange box 2, and the air outlet end of the first induced draft fan 6 is connected with the second air inlet pipe 7 on the left side of the filter box 3, and the heat exchange box 2 is connected with the air outlet of the boiler body 1 through a first air inlet pipe 4. A second air outlet pipe 8 is connected to the right side of the filter box 3; two groups of heat exchange tubes 10 are installed in parallel inside the heat exchange box 2, and a plurality of filter screens 13 are installed inside the filter box 3. The plurality of filter screens 13 are arranged in sequence from left to right, and the mesh sizes of the plurality of filter screens 13 increase in sequence from left to right. The dust in the exhaust gas is filtered through the filter screens with different mesh sizes, and is collected and processed centrally to prevent it from polluting the environment; an activated carbon plate 14 is installed on the side of the filter box 3 close to the second air outlet pipe 8, and the activated carbon plate absorbs harmful substances in the exhaust gas to prevent it from polluting the environment.

[0022] Specifically, if Figure 3 , 4 As shown, a bracket 9 is installed inside the heat exchange box 2, and a plurality of support rods 901 are connected to the front and rear sides of the bracket 9. Two groups of heat exchange tubes 10 are installed on the front and rear sides of the bracket 9, and the heat exchange tubes 10 are fixed on the support rods 901 by tube clamps. The upper end of the heat exchange tube 10 is connected to a water inlet pipe 11, and the lower end of the heat exchange tube 10 is connected to a water outlet pipe 12. When in use, the high-temperature exhaust gas contacts the heat exchange tube 10, and the cold water entering from the water inlet pipe 11 enters the water outlet pipe 12 after absorbing the heat energy. The high-temperature water coming out of the water outlet pipe 12 can be transported to other places where warm water is needed, thereby recycling the heat energy carried by the high-temperature exhaust gas and saving resources. The heat exchange efficiency is improved by arranging two groups of heat exchange tubes 10 in parallel.

[0023] A mounting seat 15 is installed on the bottom plate of the filter box 3, and a slot 1501 matching the filter screen 13 and the activated carbon board 14 is provided on the mounting seat 15. A fixing plate 16 is connected to the top surface of the filter screen 13 or the activated carbon board 14, and a pull rod 17 is connected to the top surface of the fixing plate 16. A mounting hole matching the filter screen 13 or the activated carbon board 14 is provided on the top surface of the filter box 3, and a sealing gasket is installed at the mounting hole to improve the sealing performance of the filter box. After being inserted into the filter box 3 through the mounting hole, the bottom of the filter 13 or the activated carbon board 14 is inserted into the slot 1501, and the fixing plate 16 is connected to the filter box 3 by bolts; when the filter 13 or the activated carbon board 14 needs to be replaced, the bolts on the fixing plate 16 are unscrewed, and the filter 13 or the activated carbon board 14 can be taken out by pulling the pull rod 17 upwards, and a new filter 13 or activated carbon board 14 is inserted into the filter box 3, and the fixing plate 16 is connected to the filter box 3 by bolts to complete the replacement.

[0024] The working process of the utility model is as follows:

[0025] First, the high-temperature exhaust gas discharged from the boiler body 1 enters the heat exchange box 2 through the first air inlet pipe 4, the high-temperature exhaust gas contacts the heat exchange tube 10 for heat exchange, and the cold water entering from the water inlet pipe 11 enters the water outlet pipe 12 after absorbing the heat energy. The high-temperature water coming out of the water outlet pipe 12 can be transported to other places where warm water is needed; then, the exhaust gas after the heat exchange treatment enters the filter box 3 for treatment, and the dust in the exhaust gas is filtered through the filter screens 13 with different mesh sizes. After that, the harmful substances in the exhaust gas are absorbed by the activated carbon plate 14 to prevent them from polluting the environment; finally, the exhaust gas is discharged through the second air outlet pipe 8.

[0026] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A boiler with an exhaust gas treatment device, comprising a boiler body (1), characterized in that: A heat exchange box (2) and a filter box (3) are arranged on one side of the boiler body (1); the heat exchange box (2) is connected to the air outlet of the boiler body (1) through a first air inlet pipe (4); a first induced draft fan (6) is arranged between the heat exchange box (2) and the filter box (3); an air inlet end of the first induced draft fan (6) is connected to a first air outlet pipe (5) on the right side of the heat exchange box (2); an air outlet end of the first induced draft fan (6) is connected to a second air inlet pipe (7) on the left side of the filter box (3); a second air outlet pipe (8) is arranged on the right side of the filter box (3); two groups of heat exchange tubes (10) are arranged in parallel inside the heat exchange box (2); a plurality of filter screens (13) are arranged inside the filter box (3); and an activated carbon plate (14) is arranged on one side of the filter box (3) close to the second air outlet pipe (8).

2. The boiler with the tail gas treatment device according to claim 1, characterized in that: A bracket (9) is provided inside the heat exchange box (2), and two groups of heat exchange tubes (10) are installed on the front and rear sides of the bracket (9).

3. The boiler with tail gas treatment device according to claim 1, characterized in that: The upper end of the heat exchange tube (10) is provided with a water inlet pipe (11), and the lower end of the heat exchange tube (10) is provided with a water outlet pipe (12).

4. The boiler with tail gas treatment device according to claim 1, characterized in that: The mesh sizes of the plurality of filter screens (13) increase sequentially from left to right.

5. The boiler with tail gas treatment device according to claim 1, characterized in that: A mounting seat (15) is arranged on the bottom plate of the filter box (3), and a slot (1501) matching the filter screen (13) and the activated carbon plate (14) is arranged on the mounting seat (15). A fixing plate (16) is arranged on the top surface of the filter screen (13) or the activated carbon plate (14), and a pull rod (17) is connected to the top surface of the fixing plate (16). A mounting hole matching the filter screen (13) or the activated carbon plate (14) is opened on the top surface of the filter box (3). After the filter screen (13) or the activated carbon plate (14) is inserted into the interior of the filter box (3) through the mounting hole, the fixing plate (16) is connected to the filter box (3) by bolts.

6. The boiler with tail gas treatment device according to claim 1, characterized in that: A first valve (401) is installed on the first air intake pipe (4).

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