Emission purification treatment device for circulating fluidized bed boiler

Abstract

The utility model discloses an emission purification treatment device for a circulating fluidized bed boiler, which comprises a first conveying pipe, a treatment mechanism is arranged on the first conveying pipe, the treatment mechanism comprises a treatment component and a dust treatment box, the dust treatment box is communicated with one end of the first conveying pipe, and a sealing cover is arranged at the bottom of the dust treatment box. The top of the dust treatment box is communicated with a first L-shaped pipe, the other end of the first L-shaped pipe is fixedly connected with a flue gas purification box, a first rectangular hole is formed in the top of the flue gas purification box, rectangular blocks are fixedly connected to the two sides of the flue gas purification box, and the rectangular holes are formed in the rectangular blocks. The utility model relates to the technical field of circulating fluidized bed boilers. According to the emission purification treatment device for the circulating fluidized bed boiler, the problem that in the prior art, the circulating fluidized bed boiler is lack of a device for effectively separating and treating emitted flue gas and particulate matters, so that the air quality and the environment are influenced is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of circulating fluidized bed boilers, in particular to an emission purification treatment device for circulating fluidized bed boilers. Background Art

[0002] The circulating fluidized bed boiler uses the most industrialized clean coal combustion technology. The circulating fluidized bed boiler uses fluidized combustion, and its main structure includes two parts: the combustion chamber (including the dense phase zone and the dilute phase zone) and the circulating furnace (including the high-temperature gas-solid separator and the return system).

[0003] The existing treatment device also has the following problems, referring to a circulating fluidized bed boiler disclosed in the publication number CN205592943U, which includes a furnace, a cyclone separator, a smoke exhaust pipe connecting the smoke exhaust port of the furnace and the inlet of the cyclone separator, a return pipe connecting the return port of the furnace and the discharge port of the cyclone separator, a tail flue connected to the tail gas discharge port of the cyclone separator, and a selective catalytic reduction system arranged in the tail flue, wherein the circulating fluidized bed boiler also includes a plurality of heating units arranged in the furnace and an ammonia raw material proportioning system for providing ammonia raw materials to the cyclone separator, and the heating unit can absorb heat and reduce the flue gas discharge temperature of the furnace to the temperature required for the ammonia raw materials to produce ammonia. The heat and flow of the flue gas in the cyclone separator enable the ammonia raw materials entering the cyclone separator to decompose and produce ammonia, and the generated ammonia is fully mixed with the flue gas in the cyclone separator before entering the tail flue, so as to achieve the purpose of denitrification in the selective catalytic reduction system.

[0004] However, the above technology cannot solve the problem in the prior art that circulating fluidized bed boilers lack an effective device for separating and treating the emitted flue gas and particulate matter, which affects the air quality and the environment. To this end, the utility model provides an emission purification treatment device for circulating fluidized bed boilers. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an emission purification treatment device for a circulating fluidized bed boiler, which solves the problem in the prior art that the circulating fluidized bed boiler lacks an effective device for separating and treating the emitted flue gas and particulate matter, thereby affecting the air quality and the environment.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an emission purification treatment device for a circulating fluidized bed boiler, comprising a first conveying pipe, a treatment mechanism is arranged on the first conveying pipe, the treatment mechanism comprises: a treatment component, comprising a dust treatment box connected to one end of the first conveying pipe, a closing cover is arranged at the bottom of the dust treatment box, a filtering component for filtering solid particles is arranged on the closing cover, a first L-shaped pipe is connected to the top of the dust treatment box, a flue gas purification box is fixedly connected to the other end of the first L-shaped pipe, a first rectangular hole is opened at the top of the flue gas purification box, rectangular blocks are fixedly connected to both sides of the flue gas purification box, a pair of the rectangular blocks are opened with rectangular through grooves, a fixing strip is arranged between the pair of the rectangular blocks, an activated carbon plate is arranged at the bottom of the fixing strip, and a positioning component for fixing the position of the fixing strip is arranged on the fixing strip.

[0007] Preferably, the filter assembly includes a cylindrical filter screen fixedly connected to the inner bottom wall of the closing cover, a group of first fixing blocks fixedly connected to the closing cover, and a group of second fixing blocks fixedly connected to the dust treatment box, and the first fixing blocks and the second fixing blocks are fixed by first bolts.

[0008] Preferably, an air pump is fixedly connected to the bottom of the closing cover via a pair of L-shaped blocks, and a connecting pipe is provided at the output end of the air pump, and the top end of the connecting pipe passes through the inner bottom wall of the closing cover.

[0009] Preferably, the positioning assembly comprises a rectangular groove, a pair of the rectangular grooves are respectively provided at two ends of the fixing strip, and a limiting block is fixedly connected in the pair of rectangular grooves via a spring.

[0010] Preferably, a pair of sliding grooves are provided on the top of the fixing strip, and the pair of sliding grooves are respectively connected to a pair of rectangular grooves, and a toggle block is fixedly connected to the top of a pair of limiting blocks, and the toggle block is slidably connected in the sliding grooves.

[0011] Preferably, a pair of threaded grooves are provided at the bottom of the activated carbon plate, a pair of threaded holes are provided on the fixing strip, and a second bolt is threadedly connected between the threaded grooves and the threaded holes.

[0012] Beneficial Effects

[0013] The utility model provides a circulating fluidized bed boiler emission purification treatment device. Compared with the prior art, it has the following beneficial effects:

[0014] (1) The emission purification treatment device for a circulating fluidized bed boiler transports the flue gas mixed with ash particles from a first conveying pipe to a dust treatment box, and then the air flow of the air pump drives the flue gas to be transported upward. The provided cylindrical filter can intercept the dust particles, thereby treating the dust and avoiding it from being discharged into the atmosphere. The first fixing block and the second fixing block are fixed by a first bolt, and the closing cover can be disassembled to facilitate cleaning of the dust particles and the cylindrical filter. The flue gas is then purified by the provided activated carbon plate and then discharged, thereby avoiding affecting the surrounding environment.

[0015] (2) The emission purification treatment device for the circulating fluidized bed boiler has a pair of toggle blocks. When the filter plate needs to be replaced, the toggle blocks can be toggled at the same time to release the locking effect of the pair of limit blocks, so that the fixing bar and the activated carbon plate can be removed at the same time. When the carbon plate is replaced, the activated carbon plate can be fixed by a pair of second bolts, which is convenient for replacement and can stably purify the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is an exploded view of the fixing bar of the utility model;

[0018] Figure 3 This is an exploded view of the activated carbon plate of the utility model;

[0019] Figure 4 It is an exploded view of the limit block of the utility model;

[0020] Figure 5 It is a schematic diagram of the connecting pipe of the utility model.

[0021] In the figure: 1. first conveying pipe; 2. dust treatment box; 3. closing cover; 4. first L-shaped pipe; 5. air purification box; 6. first rectangular hole; 7. rectangular block; 8. rectangular through groove; 9. fixing strip; 10. activated carbon plate; 11. cylindrical filter screen; 12. first fixing block; 13. second fixing block; 14. air pump; 15. connecting pipe; 16. rectangular groove; 17. limiting block; 18. sliding through groove; 19. toggle block; 20. threaded groove; 21. threaded hole; 22. second bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model provides a technical solution: an emission purification treatment device for a circulating fluidized bed boiler, comprising a first conveying pipe 1, on which a treatment mechanism is arranged, the treatment mechanism comprising: a treatment component, comprising a dust treatment box 2 connected to one end of the first conveying pipe 1, a closing cover 3 is arranged at the bottom of the dust treatment box 2, a filtering component for filtering solid particles is arranged on the closing cover 3, a first L-shaped pipe 4 is connected to the top of the dust treatment box 2, a flue gas purification box 5 is fixedly connected to the other end of the first L-shaped pipe 4, a first rectangular hole 6 is opened at the top of the flue gas purification box 5, rectangular blocks 7 are fixedly connected to both sides of the flue gas purification box 5, a pair of rectangular blocks 7 are opened on each of which rectangular through grooves 8, a fixing strip 9 is arranged between the pair of rectangular blocks 7, an activated carbon plate 10 is arranged at the bottom of the fixing strip 9, a positioning component for fixing the position of the fixing strip 9 is arranged on the fixing strip 9, the filtering component comprises a cylindrical filter screen 11 fixedly connected to the inner bottom wall of the closing cover 3, and a filter screen 11 is fixedly connected to the inner bottom wall of the closing cover 3. A group of first fixing blocks 12 are fixedly connected, and a group of second fixing blocks 13 are fixedly connected to the dust treatment box 2. The first fixing blocks 12 and the second fixing blocks 13 are fixed by first bolts. An air pump 14 is fixedly connected to the bottom of the closing cover 3 by a pair of L-shaped blocks. A connecting pipe 15 is provided at the output end of the air pump 14, and the top of the connecting pipe 15 passes through the inner bottom wall of the closing cover 3. The flue gas mixed with ash particles is transported from the first conveying pipe 1 to the dust treatment box 2, and then the air flow conveying of the air pump 14 drives the flue gas to be transported upward. The dust particles can be intercepted by the set cylindrical filter screen 11, so that the dust can be processed to avoid being discharged into the atmosphere. The first fixing block 12 and the second fixing block 13 are fixed by the first bolt, and the closing cover 3 can be disassembled to facilitate cleaning of dust particles and the cylindrical filter screen 11. Then the flue gas is purified by the set activated carbon plate 10 and then discharged to avoid affecting the nearby environment.

[0024] In this embodiment, the positioning component includes a rectangular groove 16, a pair of rectangular grooves 16 are respectively opened at both ends of the fixing strip 9, and the pair of rectangular grooves 16 are fixed with limit blocks 17 by springs. A pair of sliding grooves 18 are opened at the top of the fixing strip 9, and the pair of sliding grooves 18 are respectively connected with the pair of rectangular grooves 16. A pair of toggle blocks 19 are fixed to the top of the pair of limit blocks 17, and the toggle blocks 19 are slidably connected in the sliding grooves 18. A pair of threaded grooves 20 are opened at the bottom of the activated carbon plate 10, and a pair of threaded holes 21 are opened on the fixing strip 9. The threaded grooves 20 and the threaded holes 21 are threadedly connected with second bolts 22; by setting a pair of toggle blocks 19, when it is necessary to replace the filter plate, the toggle blocks 19 can be toggled at the same time to release the positioning effect of the pair of limit blocks 17, so that the fixing strip 9 and the activated carbon plate 10 can be removed at the same time. When the carbon plate is replaced, the activated carbon plate 10 can be fixed by a pair of second bolts 22, which is convenient to replace and can stably purify the flue gas.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] During operation, the flue gas mixed with ash particles is transported from the first conveying pipe 1 to the dust treatment box 2, and then the airflow conveying of the air pump 14 can drive the flue gas to be transported upward. The dust particles can be intercepted by the cylindrical filter screen 11, so that the dust can be processed to avoid being discharged into the atmosphere. The first fixing block 12 and the second fixing block 13 are fixed by the first bolt, and the closing cover 3 can be disassembled to facilitate the cleaning of dust particles and the cylindrical filter screen 11. The flue gas is then purified by the set activated carbon plate 10 and then discharged, which can avoid affecting the surrounding environment. By setting a pair of toggle blocks 19, when the filter plate needs to be replaced, the toggle blocks 19 can be toggled at the same time to release the locking effect of the pair of limit blocks 17, so that the fixing bar 9 and the activated carbon plate 10 can be removed at the same time. When replacing the carbon plate, the activated carbon plate 10 can be fixed by a pair of second bolts 22. The replacement is convenient and the flue gas purification can be stably performed.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating fluidized bed boiler exhaust purification device, comprising a first delivery pipe (1), characterized in that: The first conveying pipe (1) is provided with a processing mechanism, which comprises: A processing component comprises a dust processing box (2) connected to one end of a first conveying pipe (1), a closing cover (3) being provided at the bottom of the dust processing box (2), a filtering component for filtering solid particles being provided on the closing cover (3), a first L-shaped pipe (4) being connected to the top of the dust processing box (2), a flue gas purification box (5) being fixedly connected to the other end of the first L-shaped pipe (4), a first rectangular hole (6) being provided at the top of the flue gas purification box (5), rectangular blocks (7) being fixedly connected to both sides of the flue gas purification box (5), a pair of rectangular blocks (7) being provided with rectangular through grooves (8), a fixing strip (9) being provided between the pair of rectangular blocks (7), an activated carbon plate (10) being provided at the bottom of the fixing strip (9), and a positioning component for fixing the position of the fixing strip (9) being provided on the fixing strip (9).

2. The circulating fluidized bed boiler exhaust purification device according to claim 1, characterized in that: The filter assembly comprises a cylindrical filter screen (11) fixedly connected to the inner bottom wall of the closing cover (3), a group of first fixing blocks (12) fixedly connected to the closing cover (3), and a group of second fixing blocks (13) fixedly connected to the dust treatment box (2), wherein the first fixing blocks (12) and the second fixing blocks (13) are fixed by first bolts.

3. The circulating fluidized bed boiler exhaust purification device according to claim 2, characterized in that: An air pump (14) is fixedly connected to the bottom of the closing cover (3) via a pair of L-shaped blocks. A connecting pipe (15) is provided at the output end of the air pump (14). The top end of the connecting pipe (15) passes through the inner bottom wall of the closing cover (3).

4. The circulating fluidized bed boiler exhaust purification device according to claim 1, characterized in that: The positioning assembly comprises a rectangular groove (16), a pair of the rectangular grooves (16) are respectively arranged at two ends of the fixing strip (9), and a limiting block (17) is fixedly connected in the pair of rectangular grooves (16) via a spring.

5. The circulating fluidized bed boiler exhaust purification device according to claim 4, characterized in that: A pair of sliding grooves (18) are provided on the top of the fixing strip (9), and the pair of sliding grooves (18) are respectively connected to the pair of rectangular grooves (16); a pair of limit blocks (17) are fixedly connected to the top with a toggle block (19), and the toggle block (19) is slidably connected in the sliding grooves (18).

6. The circulating fluidized bed boiler exhaust purification device according to claim 1, characterized in that: A pair of threaded grooves (20) are provided at the bottom of the activated carbon plate (10), a pair of threaded holes (21) are provided on the fixing strip (9), and a second bolt (22) is internally threadedly connected between the threaded grooves (20) and the threaded holes (21).

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