Gypsum board calcining flue gas treatment device

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a gypsum board calcination flue gas treatment device which comprises a spraying mechanism and a flue gas treatment mechanism, the spraying mechanism comprises a spraying box body, the flue gas treatment mechanism comprises a flue gas treatment box body, and the gypsum board calcination flue gas treatment device is characterized in that the bottom of the spraying box body is connected with a flue gas inlet; a smoke outlet is formed in the side wall of the bottom of the smoke treatment box body; the top of the spraying box body is communicated with the flue gas treatment box body through the flue gas buffer box body, so that a flue gas moving path is in an inverted U shape. According to the utility model, the flue gas moving path is inverted-U-shaped, so that the gypsum board calcining flue gas is prevented from rising in a straight tube and being exhausted too quickly; the high-temperature hot flue gas is cooled through the composite graphene filter layer, and smoke dust particles in the high-temperature hot flue gas are filtered for the first time; the smoke particles are secondarily filtered by the smoke dispersing mechanism and the non-woven fabric filtering mechanism, so that the dust removal treatment on the smoke is finally realized; the structure is reasonable, use is convenient, and the smoke dust filtering effect is good.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a device for treating flue gas from gypsum board calcination. Background Technology

[0002] In recent years, with the national advocacy of harmonious development between humans and the environment, environmental protection has gradually been put on the agenda. However, the production process of gypsum board requires calcination in a combustion furnace, where the internal hot air temperature can reach 400-600℃, thus generating a large amount of high-temperature hot flue gas. This high-temperature hot flue gas contains a large amount of water vapor and soot, requiring treatment before release.

[0003] Currently, most gypsum board calcination flue gas treatment methods employ a cylindrical structure. For example, in the patented device for flue gas treatment of a calcium oxide calcining furnace with good purification effect (authorization announcement number CN210356677U), the casing is cylindrical. The flue gas generated by the calcining furnace is fed into the casing, and the flue gas passes through the air guiding structure, filter plate, electrolysis treatment box, and photolysis treatment box from bottom to top to complete the waste gas treatment. The internal structure is complex, and because the flue gas temperature is high and rises rapidly, it will quickly pass through the casing and be discharged, resulting in poor filtration of water vapor and dust in the flue gas.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide a treatment device for gypsum board calcination flue gas, which solves the problems of excessively fast direct discharge of gypsum board calcination flue gas through a straight cylinder and poor dust particle filtration effect.

[0006] To achieve the above objectives, this utility model provides a treatment device for gypsum board calcination flue gas, including a spraying mechanism and a flue gas treatment mechanism. The spraying mechanism includes a spraying box, and the flue gas treatment mechanism includes a flue gas treatment box. The device is characterized in that a flue gas inlet is connected to the bottom of the spraying box, and a flue gas outlet is provided on the bottom side wall of the flue gas treatment box. The top of the spraying box is connected to the flue gas treatment box through a flue gas buffer box, so that the flue gas movement path is inverted U-shaped.

[0007] As a preferred technical solution, a spray pipe is provided inside the spray box, and multiple atomizing nozzles are connected to the spray pipe. A composite graphene filter layer is also provided inside the spray box, and the composite graphene filter layer is located below the spray pipe.

[0008] As a preferred technical solution, the composite graphene filter layer is sponge-like.

[0009] As a preferred technical solution, the pore size of the composite graphene filter layer is 20-30 ppi.

[0010] As a preferred technical solution, a flue gas dispersion mechanism is provided on the top of the flue gas treatment box, and a non-woven fabric filter mechanism is provided below the flue gas dispersion mechanism.

[0011] As a preferred technical solution, the flue gas dispersion mechanism includes two symmetrically arranged side plates. The side plates are provided with multiple sliding grooves that are inclined from bottom to top along the flue gas entry direction. The multiple sliding grooves are arranged at equal intervals and their height gradually increases along the flue gas entry direction. A slidable dispersion plate is provided in each sliding groove.

[0012] As a preferred technical solution, the nonwoven filter mechanism includes a drawer-type pull-out box, the bottom surface of which is a mesh surface, and nonwoven fabric is disposed inside the pull-out box.

[0013] As a preferred technical solution, a tube bundle dust collector is provided below the non-woven fabric filter mechanism. The tube bundle dust collector includes multiple regular hexagonal sleeves connected together in a honeycomb pattern. Each regular hexagonal sleeve is provided with a circular through hole, and at least one swirl plate is provided in the circular through hole.

[0014] As a preferred technical solution, a heat insulation layer may be provided between the flue gas treatment box and the spray box.

[0015] This utility model provides a device for treating gypsum board calcination flue gas. The flue gas enters from the flue gas inlet at the bottom of the spray box, then enters the flue gas treatment box through the flue gas buffer box at the top of the spray box, and finally exits through the exhaust port on the bottom side wall of the flue gas treatment box. This makes the flue gas movement path in an inverted U-shape, avoiding the gypsum board calcination flue gas from rising straight up and being discharged too quickly. The high-temperature hot flue gas is cooled by a composite graphene filter layer, and the dust particles in the high-temperature hot flue gas are filtered once. After the flue gas movement path is changed by the flue gas buffer box, the dust particles are filtered a second time by the flue gas dispersion mechanism and the non-woven fabric filter mechanism, finally achieving dust removal treatment of the flue gas. The structure is reasonable, easy to use, and has a good dust filtration effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the gypsum board calcination flue gas treatment device of this utility model;

[0017] Figure 2 This is a schematic diagram of the spraying mechanism;

[0018] Figure 3 This is a side view of the flue gas dispersion mechanism;

[0019] Figure 4 This is a schematic diagram of a nonwoven filter mechanism.

[0020] Figure 5 This is a cross-sectional view of a regular hexagonal sleeve in a tube bundle dust collector;

[0021] Figure 6 This is a photograph of a composite graphene filter layer.

[0022] In the picture:

[0023] 1-Spray chamber, 11-Composite graphene filter layer, 12-Connector, 13-Spray pipe, 2-Flue gas outlet, 3-Flue gas treatment chamber, 31-Exhaust port, 33-Flue gas dispersion mechanism, 331-Side plate, 332-Slide groove, 333-Dispersion plate, 34-Non-woven fabric filter mechanism, 341-Pull-out box, 342-Non-woven fabric, 35-Tube bundle dust collector, 351-Regular hexagonal sleeve, 352-Swirl plate, 353-Circular through hole, 4-Flue gas inlet. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0025] Example 1:

[0026] See Figure 1 This utility model provides a device for treating flue gas from gypsum board calcination, including a spraying mechanism and a flue gas treatment mechanism.

[0027] See Figure 1 and Figure 2 The spraying mechanism includes a spray box 1, with a flue gas inlet 4 connected to the bottom of the spray box 1 and a flue gas outlet 2 connected to the top of the spray box 1. A spray pipe 13 is provided inside the spray box 1, and the spray pipe 13 is connected to multiple atomizing nozzles. The spray pipe 13 is connected to a water source located outside the spray box 1 via a connector 12.

[0028] The spray box 1 is also equipped with a composite graphene filter layer 11, which is located below the spray pipe 13. The composite graphene filter layer 11 is sponge-like with a pore size of 20-30 ppi. (See [reference needed]). Figure 6This is a physical image of the composite graphene filter layer 11. The composite graphene filter layer 11 can withstand temperatures of approximately 750℃ while maintaining its structural stability. Therefore, it will not undergo thermal decomposition when hot flue gas at temperatures of 400-600℃ passes through it, demonstrating strong structural stability. When the atomizing nozzle on the spray pipe 13 sprays mist, the mist has a very low water content, serving only as a sponge skeleton for wetting the composite graphene filter layer 11. After entering through the flue gas inlet 4, the hot flue gas moves upward along the sponge pores of the composite graphene filter layer 11. Passing through the composite graphene filter layer 11, the hot flue gas not only experiences cooling but also has its dust particles adhered to the sponge skeleton of the graphene filter layer 11, achieving primary filtration of dust particles. The high-temperature water vapor liquefies upon cooling and flows down along the sponge skeleton of the graphene filter layer 11, achieving water vapor recovery.

[0029] See Figure 1 The flue gas treatment mechanism includes a flue gas treatment chamber 3, and a flue gas exhaust port 31 is provided on the bottom side wall of the flue gas treatment chamber 3. The spray chamber 1 is connected to the flue gas treatment chamber 3 through a flue gas buffer chamber 2, and then discharged through the exhaust port 31. The flue gas movement path is designed as an inverted U-shape, which slows down the movement rate of the flue gas and helps to improve the filtration and treatment of dust particles contained in the flue gas.

[0030] A heat insulation layer can be installed between the flue gas treatment box 3 and the spray box 1 to block heat exchange between them.

[0031] The top of the flue gas treatment box 3 is provided with a flue gas dispersion mechanism 33, and a non-woven fabric filter mechanism 34 with extremely high air permeability is provided below the flue gas dispersion mechanism 33.

[0032] See Figure 1 and Figure 3 The flue gas dispersion mechanism 33 includes two symmetrically arranged side plates 331. Each side plate 331 has multiple sliding grooves 332 that slope upwards along the flue gas inlet direction. The grooves 332 are evenly spaced and their height gradually increases along the flue gas inlet direction. Each groove 332 contains a slidable dispersion plate 333. To facilitate the installation of the flue gas dispersion mechanism 33 or the replacement of the dispersion plate 333, an openable top door can be provided on the top of the flue gas treatment box 3.

[0033] See Figure 1 and Figure 4The nonwoven fabric filter mechanism 34 includes a drawer-type pull-out box 341. The bottom surface of the pull-out box 341 is a mesh surface, and nonwoven fabric 342 is placed inside the pull-out box 341. In use, after the nonwoven fabric 342 is placed into the pull-out box 341, the pull-out box 341 is sealed and closed. After the pull-out box 341 collects a large amount of smoke particles, the nonwoven fabric 342 is removed and replaced, thus achieving secondary filtration of the smoke particles. The flue gas after two filtrations is discharged through the exhaust port 31, completing the smoke and dust treatment of the flue gas.

[0034] See Figure 1 and Figure 5 To further enhance the treatment of smoke and dust particles, a tube bundle dust collector 35 can be installed below the non-woven fabric filter mechanism 34. The tube bundle dust collector 35 includes multiple regular hexagonal sleeves 351 connected together in a honeycomb pattern. Each regular hexagonal sleeve 351 is provided with a circular through hole 353. At least one swirl plate 352 is provided in the circular through hole 353. The swirl plate 352 includes multiple inclined swirl blades. The flue gas after secondary filtration can pass through the gap between adjacent swirl blades.

[0035] This utility model provides a device for treating gypsum board calcination flue gas. The flue gas enters from the flue gas inlet at the bottom of the spray box, then enters the flue gas treatment box through the flue gas buffer box at the top of the spray box, and finally exits through the exhaust port on the bottom side wall of the flue gas treatment box. This makes the flue gas movement path in an inverted U-shape, avoiding the gypsum board calcination flue gas from rising straight up and being discharged too quickly. The high-temperature hot flue gas is cooled by a composite graphene filter layer, and the dust particles in the high-temperature hot flue gas are filtered once. After the flue gas movement path is changed by the flue gas buffer box, the dust particles are filtered a second time by the flue gas dispersion mechanism and the non-woven fabric filter mechanism, finally achieving dust removal treatment of the flue gas. The structure is reasonable, easy to use, and has a good dust filtration effect.

[0036] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A device for treating gypsum board calcination flue gas, comprising a spraying mechanism and a flue gas treatment mechanism, the spraying mechanism comprising a spraying box body (1), and the flue gas treatment mechanism comprising a flue gas treatment box body (3), characterized in that, The bottom of the spray box (1) is connected with a flue gas inlet (4), and the bottom side wall of the flue gas treatment box (3) is provided with a flue gas outlet (31); the top of the spray box (1) is communicated with the flue gas treatment box (3) through the flue gas buffer box (2), so that the flue gas moving path is inverted U-shaped.

2. A device for treating gypsum board calcination flue gas according to claim 1, characterized in that, The spray box (1) is provided with a spray pipe (13), the spray pipe (13) is connected with a plurality of atomizing nozzles, and the spray box (1) is further provided with a composite graphene filter layer (11), and the composite graphene filter layer (11) is located below the spray pipe (13).

3. A device for treating gypsum board calcination flue gas according to claim 2, characterized in that, The composite graphene filter layer (11) is sponge-like.

4. A device for treating gypsum board calcination flue gas according to claim 3, characterized in that, The pore size of the composite graphene filter layer (11) is 20-30 ppi.

5. A device for treating gypsum board calcination flue gas according to claim 1, characterized in that, The top of the flue gas treatment box (3) is provided with a flue gas dispersion mechanism (33), and the lower portion of the flue gas dispersion mechanism (33) is provided with a non-woven fabric filtering mechanism (34).

6. A device for treating gypsum board calcination flue gas according to claim 5, characterized in that, The flue gas dispersion mechanism (33) comprises two symmetrical non-woven fabric filtering mechanisms (331), the non-woven fabric filtering mechanism (331) is provided with a plurality of chute (332) inclined from bottom to top along the flue gas entering direction, the plurality of chute (332) are arranged at equal intervals and the height gradually increases along the flue gas entering direction; each chute (332) is provided with a slidable dispersion plate (333).

7. A device for treating gypsum board calcination flue gas according to claim 6, characterized in that, The non-woven fabric filtering mechanism (34) comprises a drawer type drawer box (341), the bottom surface of the drawer box (341) is a mesh surface, and the drawer box (341) is provided with a non-woven fabric (342).

8. A device for treating gypsum board calcination flue gas according to claim 7, characterized in that, The lower portion of the non-woven fabric filtering mechanism (34) is provided with a tube bundle dust collector (35), the tube bundle dust collector (35) comprises a plurality of regular hexagonal sleeves (351) connected together in a honeycomb shape, each regular hexagonal sleeve (351) is provided with a circular through hole (353), and the circular through hole (353) is provided with at least one cyclone plate (352).

9. A device for treating gypsum board calcination flue gas according to claim 7, characterized in that, A heat insulation layer can be arranged between the flue gas treatment box (3) and the spray box (1).

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