Protective device for fluidized bed furnace

Abstract

The protective device comprises a combustion structure, the combustion structure is communicated with a heat recovery structure, the heat recovery structure is communicated with a desulfurization assembly, and the desulfurization assembly is communicated with a waste gas treatment assembly and used for waste gas treatment. The protection device for the fluidized bed furnace plays a protection role under the auxiliary action of an anti-scalding layer and a protective fence, workers are prevented from being scalded, a hydraulic cylinder in the cleaning assembly drives a scraper through a hydraulic rod to scrape the inner wall of the fluidized bed furnace body, materials generated during sintering of the fluidized bed furnace are prevented from being adhered to the inner wall of the fluidized bed furnace, and the working efficiency is improved. Flue gas generated during combustion of the fluidized bed furnace sequentially passes through a first flue gas conveying pipe and a second flue gas discharging pipe, so that impurities in the flue gas are pretreated, the cleaning or replacing frequency of a filter screen is reduced, and practicability is improved; and finally, the high-temperature flue gas enters a coiled pipe in the boiler barrel and heats the tap water in the boiler barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of boiling furnaces, in particular to a protective device for boiling furnaces. Background Art

[0002] Fluidized bed furnace is also called fluidized bed roasting furnace. A device for roasting sulfide ore using solid fluidization technology has been found to have a protective mechanism for a fluidized bed furnace in the prior art. A typical example is the patent publication number CN218107236U. The gas in the furnace will pass through the first filter, then through the first adsorption layer, then through the second filter, and finally the gas will be discharged through the second adsorption layer. The first adsorption layer and the second adsorption layer can effectively treat the toxic gas. By setting up a double-layer protection, the toxic gas can be effectively prevented from entering the external air and polluting the air. However, there are still some problems, such as a large amount of impurities in the air. It is easy to clog the filter when the filter is directly installed at the outlet of the fluidized bed furnace, increasing the number of cleaning or replacement times. In addition, the exhaust gas temperature in the fluidized bed furnace is high and the hot gas is not reused, resulting in a waste of resources. Utility Model Content

[0003] The purpose of the utility model is to provide a protective device for a boiling furnace to solve the problems mentioned in the above background technology that the air contains a large amount of impurities, and the filter installed directly at the outlet of the boiling furnace is easy to be blocked, increasing the number of cleaning or replacement times, and the exhaust gas temperature in the boiling furnace is high and the hot gas is not reused, resulting in a waste of resources.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a fluidized bed furnace, comprising a combustion structure, the combustion structure is connected to a heat recovery structure, the heat recovery structure is connected to a desulfurization component, the desulfurization component is connected to an exhaust gas treatment component and is used for exhaust gas treatment, the combustion structure comprises a fluidized bed furnace body, a protective component is fixed on the fluidized bed furnace body, a feed port is passed through the left side of the fluidized bed furnace body, an igniter is passed through the fluidized bed furnace body, the igniter is located at the lower side of the cleaning component, the fluidized bed furnace body is telescopically adjusted to adjust the position of the cleaning component through a telescopic structure, the fluidized bed furnace body is connected to a first smoke delivery pipe through a first smoke exhaust port, and the first smoke delivery pipe is connected to a second smoke exhaust pipe through a third smoke exhaust port;

[0005] The protective component includes an anti-scalding layer, which is embedded in the boiling furnace body, and the anti-scalding layer is fixed on the outer shell of the boiling furnace body;

[0006] The cleaning component comprises a supporting plate, and the supporting plate ensures that the scraper always fits the inner wall of the boiling furnace body through a spring shaft.

[0007] Preferably, the heat recovery structure comprises an exhaust gas pipe, and the exhaust gas pipe is connected to the boiler heating component.

[0008] Preferably, the boiler heating assembly includes a filter tube, the filter tube is threadedly connected to a filter screen, the filter tube is connected to a serpentine tube on the boiler barrel, the serpentine tube is wound in the boiler barrel, and the serpentine tube is connected to the first exhaust pipe.

[0009] By adopting the above technical solution, the hot gas generated by the boiling furnace body is recovered and reused by setting up a boiler heating component.

[0010] Preferably, the desulfurization component includes a spray box, a lime water storage tank is arranged on the lower side of the spray box, the lime water storage tank is connected to the first water pipe and the second water pipe through a water pipe, the first water pipe is located at the lower side of the second water pipe, the first water pipe is connected to a high-pressure nozzle, and the second water pipe is connected to an atomizing nozzle.

[0011] By adopting the above technical solution, the waste gas is desulfurized by setting up a desulfurization component.

[0012] Preferably, the waste gas treatment component includes a second exhaust pipe, an electric heating wire mesh is fixed in the second exhaust pipe, the second exhaust pipe is connected to the first waste treatment box, the first waste treatment box is connected to the activated carbon bag box, and the activated carbon filter is slidably connected to the first waste treatment box.

[0013] By adopting the above technical solution, the exhaust gas is treated by setting up an exhaust gas treatment component.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the protective device for the boiling furnace

[0015] (1) A combustion structure and a heat recovery structure are provided, which play a protective role with the assistance of the anti-scalding layer and the guardrail to prevent scalding of the staff. The hydraulic cylinder in the cleaning component drives the scraper to scrape the inner wall of the boiling furnace body through the hydraulic rod to prevent the materials generated during the sintering of the boiling furnace from adhering to the inner wall of the boiling furnace and finally falling into the high-temperature calcined material, affecting the processing quality. The flue gas generated during the combustion of the boiling furnace passes through the first smoke conveying pipe and the second smoke exhaust pipe in turn, thereby pre-treating the impurities in the flue gas, reducing the number of times the filter screen needs to be cleaned or replaced, and increasing practicality. Finally, the high-temperature flue gas enters the serpentine pipe in the boiler barrel and heats the tap water in the boiler barrel, thereby recovering and reusing the heat to avoid wasting resources;

[0016] (2) A desulfurization component and an exhaust gas treatment component are provided. The lime water in the lime water storage tank is sprayed with high pressure through multiple sets of high-pressure nozzles on the first water pipe, and is sprayed again with the assistance of multiple sets of atomizing nozzles on the second water pipe, thereby achieving the effect of desulfurization. The desulfurized lime becomes desulfurized gypsum, which is directly recycled and used later. The exhaust gas after desulfurization is dehumidified and dried with the assistance of an electric heating wire mesh. The exhaust gas is finally treated through two sets of activated carbon filters and activated carbon bags to ensure air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 2 This is a rear view structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the combustion structure of the utility model;

[0020] Figure 4 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the cleaning component of the utility model.

[0022] In the figure: 1. Combustion structure; 11. Boiling furnace body; 12. Protection component; 121. Anti-scalding layer; 122. Guardrail; 13. Feed port; 14. Ignitor; 15. Cleaning component; 151. Support plate; 152. Spring shaft; 153. Scraper; 16. First smoke exhaust port; 17. First smoke delivery pipe; 18. Second smoke exhaust pipe; 19. Third smoke exhaust port; 2. Heat recovery structure; 21. Exhaust pipe; 22. Boiler heating component; 221. Filter pipe ; 222, filter screen; 223, boiler barrel; 224, serpentine pipe; 225, first exhaust pipe; 3, desulfurization component; 31, spray box; 32, lime water storage tank; 33, water pipe; 34, first water pipe; 35, high-pressure nozzle; 36, second water pipe; 37, atomizing nozzle; 4, exhaust gas treatment component; 41, second exhaust pipe; 42, electric heating wire mesh; 43, first waste treatment box; 44, activated carbon filter screen; 45, activated carbon bag box. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-5 The utility model provides a technical solution: a protective device for a boiling furnace such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the combustion structure 1 includes a boiling furnace body 11, a protective component 12 is fixed on the boiling furnace body 11, a feed port 13 passes through the left side of the boiling furnace body 11, an igniter 14 passes through the boiling furnace body 11, and the igniter 14 is located at the lower side of the cleaning component 15. The boiling furnace body 11 adjusts the position of the cleaning component 15 through a telescopic structure. The boiling furnace body 11 is connected to the first smoke delivery pipe 17 through a first smoke exhaust port 16, and the first smoke delivery pipe 17 is connected to the second smoke exhaust pipe 18 through a third smoke exhaust port 19. The protective component 12 includes an anti-scalding layer 121, and the anti-scalding layer 121 is embedded in the boiling furnace body 11. The outer shell of the boiling furnace body 11 fixes the anti-scalding layer 121. The cleaning component 15 includes a support plate 151, and the support plate 151 ensures that the scraper 153 always fits the inner wall of the boiling furnace body 11 through a spring shaft 152;

[0025] Among them, six groups of spring shafts 152 are evenly distributed between the support plate 151 and the scraper 153. The arrangement of the six groups of spring shafts 152 ensures that the scraper 153 always fits the inner wall of the boiling furnace body 11, and when the scraper 153 moves downward, the cleaning effect of the inner wall of the boiling furnace body 11 is ensured;

[0026] Specifically, the telescopic structure in the present application is a hydraulic cylinder, which is a prior art, and the support plate 151 and the scraper 153 are both arranged in a ring shape, four groups of hydraulic rods are fixed on the upper side of the scraper 153, and one group of hydraulic rods is fixed on the support plate 151;

[0027] Furthermore, eight groups of igniters 14 are arranged in an equidistant ring on the boiling furnace body 11, so that the objects entering the boiling furnace body 11 can be burned more evenly;

[0028] In the above scheme, the material enters the boiling furnace body 11 through the feed port 13, the igniter 14 ignites and burns the material, and the burned material is discharged through the lower discharge port. The smoke generated during combustion enters the first smoke duct 17 through the first smoke exhaust port 16, and impurities fall into the lower aggregate trough. The lower top cover of the aggregate trough is rotated later to directly process the impurities. The smoke entering the first smoke duct 17 enters the second smoke exhaust pipe 18 through the third smoke exhaust port 19, and finally enters the exhaust pipe 21. The anti-scalding layer 121 and the guardrail 122 prevent the boiling furnace body 11 from being overheated and scalding the staff. With the assistance of the hydraulic cylinders on the support plate 151 and the scraper 153, the support plate 151 and the scraper 153 are driven downward by the hydraulic rod to clean the inner wall of the boiling furnace body 11.

[0029] like Figure 1 and Figure 2As shown, the combustion structure 1 is connected to the heat recovery structure 2, the heat recovery structure 2 includes an exhaust pipe 21, the exhaust pipe 21 is connected to the boiler heating assembly 22, the boiler heating assembly 22 includes a filter tube 221, the filter tube 221 is internally threadedly connected to the filter screen 222, the filter tube 221 is connected to the serpentine tube 224 on the boiler barrel 223, the serpentine tube 224 is wound in the boiler barrel 223, and the serpentine tube 224 is connected to the first exhaust pipe 225;

[0030] Among them, two groups of filter screens 222 are provided, and the mesh density of the two groups of filter screens 222 is different, so as to ensure the filtering effect. The filter tube 221 is sealed and connected with the exhaust pipe 21 through a hollow threaded connector, which is convenient for disassembly of the filter tube 221. The sealing covers on both sides of the filter tube 221 and the filter screen 222 can be threadedly disassembled and installed, which is convenient for replacing or cleaning the filter screen 222 later.

[0031] In the above scheme, the high-temperature flue gas enters the filter tube 221 through the exhaust pipe 21, and impurities are filtered with the assistance of the filter mesh 222 in the filter tube 221. The filtered high-temperature flue gas enters the serpentine tube 224 in the boiler barrel 223 and heats the tap water in the boiler barrel 223, thereby reusing the residual heat.

[0032] like Figure 1 and Figure 2 As shown, the heat recovery structure 2 is connected to the desulfurization component 3, and the desulfurization component 3 includes a spray box 31. A lime water storage tank 32 is arranged at the lower side of the spray box 31. The lime water storage tank 32 is connected to a first water pipe 34 and a second water pipe 36 through a water pipe 33. The first water pipe 34 is located at the lower side of the second water pipe 36. The first water pipe 34 is connected to a high-pressure nozzle 35, and the second water pipe 36 is connected to an atomizing nozzle 37.

[0033] Among them, four groups are arranged on each of the first water pipe 34 and the second water pipe 36. Multiple high-pressure nozzles 35 and atomizing nozzles 37 are evenly distributed on the four groups of the first water pipe 34 and the second water pipe 36, so as to ensure that the lime water sprays and desulfurizes the flue gas better. The lime water after desulfurization becomes gypsum water, which is directly recycled and processed later. A demister is fixed on the top of the spray box 31 to play a role in demisting.

[0034] Specifically, a filter is fixed at the connection between the water pipe 33 and the lime water storage tank 32 to prevent impurities from entering the water pipe 33, blocking the water pipe 33, and affecting the normal use of the water pipe 33;

[0035] In the above scheme, with the assistance of the pressure pump on the water pipe 33, the lime water in the lime water storage tank 32 enters the high-pressure nozzle 35 and the atomizing nozzle 37 through the water pipe 33, the first water pipe 34 and the second water pipe 36, and is finally sprayed out through the high-pressure nozzle 35 and the atomizing nozzle 37 to desulfurize the flue gas.

[0036] like Figure 1 and Figure 2 As shown, the desulfurization component 3 is connected to the exhaust gas treatment component 4 and is used for exhaust gas treatment. The exhaust gas treatment component 4 includes a second exhaust pipe 41, an electric heating wire mesh 42 is fixed in the second exhaust pipe 41, the second exhaust pipe 41 is connected to a first waste treatment box 43, the first waste treatment box 43 is connected to an activated carbon bag box 45, and an activated carbon filter screen 44 is slidably connected to the first waste treatment box 43;

[0037] Among them, two groups of electric heating wire meshes 42 are provided, and the two groups of electric heating wire meshes 42 ensure the heating and dehumidification effect. Two groups of activated carbon filter meshes 44 are provided, and the mesh densities of the two groups of activated carbon filter meshes 44 are different. The right side of the activated carbon package box 45 runs through the exhaust port, and the exhaust port is embedded with an exhaust fan.

[0038] In the above scheme, the exhaust gas containing water vapor is dried with the assistance of the electric heating screen 42 in the second exhaust pipe 41, and the dried exhaust gas enters the first waste treatment box 43, and is pre-treated with the assistance of two groups of activated carbon filters 44 in the first waste treatment box 43, and the pre-treated exhaust gas enters the activated carbon bag box 45, and is treated again with the assistance of the activated carbon bag in the activated carbon bag box 45 to ensure the exhaust gas treatment effect.

[0039] Working principle: When using the protective device for the boiling furnace, turn on the external power supply, clean the inside of the boiling furnace body 11 by setting the combustion structure 1, recover the hot gas with the assistance of the heat recovery structure 2, desulfurize the flue gas with the assistance of the desulfurization component 3, and treat the exhaust gas with the assistance of the exhaust gas treatment component 4.

[0040] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0041] 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 protective device for a fluidized bed furnace, comprising a combustion structure (1), the combustion structure (1) being connected to a heat recovery structure (2), the heat recovery structure (2) being connected to a desulfurization component (3), the desulfurization component (3) being connected to an exhaust gas treatment component (4) and used for exhaust gas treatment, characterized in that: The combustion structure (1) comprises a fluidized bed furnace body (11), a protective component (12) is fixed on the fluidized bed furnace body (11), a feed port (13) passes through the left side of the fluidized bed furnace body (11), an igniter (14) passes through the fluidized bed furnace body (11), the igniter (14) is located at the lower side of the cleaning component (15), the fluidized bed furnace body (11) is telescopically adjustable in position of the cleaning component (15) through a telescopic structure, the fluidized bed furnace body (11) is connected to a first smoke delivery pipe (17) through a first smoke exhaust port (16), and the first smoke delivery pipe (17) is connected to a second smoke exhaust pipe (18) through a third smoke exhaust port (19); The protection component (12) comprises an anti-scalding layer (121), the anti-scalding layer (121) is embedded in the boiling furnace body (11), and the outer shell of the boiling furnace body (11) fixes the anti-scalding layer (121); The cleaning assembly (15) comprises a support plate (151), and the support plate (151) ensures that the scraper (153) always fits the inner wall of the boiling furnace body (11) via a spring shaft (152).

2. The protective device for a fluidized bed furnace according to claim 1, characterized in that: The heat recovery structure (2) comprises an exhaust gas pipe (21), and the exhaust gas pipe (21) is connected to a boiler heating component (22).

3. The protective device for a boiling furnace according to claim 2, characterized in that: The boiler heating component (22) comprises a filter tube (221), the filter tube (221) is internally threadedly connected to a filter screen (222), the filter tube (221) is connected to a serpentine tube (224) on a boiler barrel (223), the serpentine tube (224) is wound inside the boiler barrel (223), and the serpentine tube (224) is connected to a first exhaust pipe (225).

4. The protective device for a boiling furnace according to claim 1, characterized in that: The desulfurization assembly (3) comprises a spray box (31), a lime water storage tank (32) is arranged at the lower side of the spray box (31), the lime water storage tank (32) is connected to a first water pipe (34) and a second water pipe (36) through a water pipe (33), the first water pipe (34) is located at the lower side of the second water pipe (36), the first water pipe (34) is connected to a high-pressure nozzle (35), and the second water pipe (36) is connected to an atomizing nozzle (37).

5. The protective device for a boiling furnace according to claim 1, characterized in that: The waste gas treatment component (4) comprises a second exhaust pipe (41), an electric heating wire mesh (42) is fixed inside the second exhaust pipe (41), the second exhaust pipe (41) is connected to a first waste treatment box (43), the first waste treatment box (43) is connected to an activated carbon bag box (45), and an activated carbon filter mesh (44) is slidably connected to the first waste treatment box (43).

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