Environment-friendly combustion furnace tail gas dust removal equipment

Abstract

The utility model relates to environment-friendly combustion furnace tail gas dust removal equipment which comprises a tank body, an upper cover, a bottom cover, a gas guide mechanism, a water injection pipe, a spraying mechanism, an exhaust pipe and a slag discharge valve pipe. The gas guide mechanism is arranged in the middle of the tank body, tail gas can be conveniently guided into the bottom, full spraying of the spraying mechanism is promoted, and the dust removal efficiency is greatly improved. The water injection pipe is used for supplementing water, the slag discharge valve pipe at the bottom of the bottom cover can discharge precipitated dust, and purified tail gas is discharged through the exhaust pipe. In the gas guide mechanism, a pressurizing piece at the upper end of a smoke guide pipe increases gas pressure to promote tail gas to enter the bottom of the tank body; the diffusion piece and the air hole at the lower end help the tail gas to contact with water so as to preliminarily remove dust. Through the design, the tail gas diffusion and water contact time is prolonged, the dust settling rate is increased, and the dust removal efficiency is remarkably improved. And the gas subjected to primary dust removal is further purified by the spraying mechanism in the rising process. In addition, the slag discharge valve pipe can discharge slag regularly, the overall maintenance is simple and convenient, and the requirement for frequently replacing the filter screen is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas dust removal, in particular to a tail gas dust removal equipment for combustion furnace for environmental protection. BACKGROUND

[0002] The tail gas dust removal equipment for combustion furnace is mainly used for reducing particulate matter and dust discharged by industrial boilers and combustion furnaces, reducing air pollution caused by tail gas, and is widely applied to the field of dust removal to meet environmental regulations and protect air quality.

[0003] In the prior art, the tail gas is directly removed by the filter screen at the beginning. However, the content of smoke dust in the initial stage of tail gas is high, which easily causes the filter screen to be blocked, increases the air flow resistance, and reduces the dust removal efficiency of the tail gas. If the filter screen is frequently replaced, the maintenance cost is increased, and the efficiency and continuity of dust removal are affected.

[0004] That is, the current dust removal equipment has the technical problems of low dust removal efficiency and high maintenance cost. CONTENT OF THE UTILITY MODEL

[0005] Therefore, it is necessary to provide a tail gas dust removal equipment for combustion furnace for environmental protection aiming at the above technical problems.

[0006] In order to achieve the above purpose, the utility model embodiment adopts the following technical scheme:

[0007] A tail gas dust removal equipment for combustion furnace for environmental protection comprises:

[0008] A tank body is connected with an upper cover at the upper end and connected with a bottom cover at the lower end. The tank body and the upper cover and the tank body and the bottom cover can be connected through flanges, directly welded, or made into an integral shell.

[0009] A gas guide mechanism comprises a smoke guide pipe in the middle of the tank body. The upper end of the smoke guide pipe penetrates through the upper cover and is provided with a pressurizing component. The lower end of the smoke guide pipe in the bottom cover is fixed with a diffusion component. The bottom of the diffusion component is sealed, and the side and upper part of the diffusion component are provided with gas permeation holes for gas permeation. The gas guide mechanism is used for guiding the tail gas of the combustion furnace into the bottom of the tank body. The pressurizing component can be a gas pump, a compressor or a blower, as long as it can effectively guide and pressurize the tail gas to flow into the bottom of the tank body along the smoke guide pipe. The diffusion component can be an expansion pipe with a sealed bottom, a diffusion pipe with a sealed bottom, or a flexible connecting pipe with a sealed bottom, and the side and upper part of the diffusion component are provided with gas permeation holes for gas permeation. The diffusion component is used for facilitating the diffusion of the tail gas from the gas permeation holes, reducing local accumulation, and improving the diffusion efficiency of the gas.

[0010] A water injection pipe is connected with the tank body and used for injecting water into the dust removal equipment. The water injection pipe can be arranged on the side of the tank body.

[0011] The spraying mechanism includes a plurality of water supply pipes and nozzles for dust removal of the tail gas introduced by the air guide mechanism. The spraying mechanism can include a series of pipes arranged inside and outside the tank, which can suck water from a water source, transport water into the tank, and finally spray water in the tank through nozzles or spray heads, so that the tail gas rising slowly from the bottom of the tank is fully sprayed.

[0012] The exhaust pipe is arranged at the side of the upper cover and used for discharging the purified gas after dust removal.

[0013] The deslagging valve pipe is arranged at the bottom of the bottom cover and used for deslagging.

[0014] In one embodiment, the pressurizing member is a gas pump.

[0015] In one embodiment, the pressurizing member is a compressor.

[0016] In one embodiment, the diffusing member includes an expansion pipe.

[0017] In one embodiment, the diffusing member includes a diffusing pipe.

[0018] In one embodiment, the tank and the upper cover are connected by flanges, and the tank and the bottom cover are also connected by flanges. Through the flange connection, not only a stable structural support is provided to ensure better sealing, but also the disassembly and maintenance are facilitated, thereby reducing the overall maintenance cost of the dust removal equipment.

[0019] In one embodiment, a sealing ring for sealing is arranged between the smoke guide pipe and the upper cover. The sealing ring improves the sealing of the system and effectively prevents the tail gas from leaking between the smoke guide pipe and the upper cover, thereby further improving the dust removal efficiency.

[0020] In one embodiment, the tail gas dust removal equipment for the environmental protection combustion furnace further includes a filtering mechanism including a first filter screen, which is sleeved outside the smoke guide pipe and arranged below the nozzles of the spraying mechanism. Since the air guide mechanism introduces the tail gas into the bottom of the tank, the tail gas is sprayed by the spraying mechanism when it comes out of the air hole, and the gas continues to rise during the spraying and dust removal process. The first filter screen arranged below the nozzles of the spraying mechanism can further capture the particulate matter that cannot be removed, thereby improving the overall dust removal efficiency.

[0021] In one embodiment, the tail gas dust removal equipment for the environmental protection combustion furnace further includes a second filter screen, which is also sleeved outside the smoke guide pipe and arranged above the nozzles of the spraying mechanism. After the tail gas is fully sprayed, the second filter screen is arranged for the last filtering, thereby ensuring that the discharged gas is cleaner and further improving the overall dust removal efficiency. Both the first filter screen and the second filter screen can be arranged to greatly improve the overall dust removal efficiency.

[0022] In one of the embodiments, the inner ring of the first filter screen and the second filter screen are sleeved with inner rubber rings, and the outer ring of the first filter screen and the second filter screen are sleeved with outer rubber rings, the inner rubber rings are sleeved inside the smoke guide pipe, and the outer rubber rings are tightly attached to the inner surface of the tank body.

[0023] In one of the embodiments, the spraying mechanism comprises a water suction pipe, a water pump, a flow guide pipe, branch pipes, water collecting pipes, shunt pipes and nozzles.

[0024] One end of the water suction pipe is inserted into the inside of the bottom cover, the water pump is connected to the other end of the water suction pipe and the flow guide pipe respectively, the side of the flow guide pipe is connected to a plurality of branch pipes, one end of each branch pipe inserted into the tank body is connected to a ring-shaped water collecting pipe, each water collecting pipe coincides with the central axis of the smoke guide pipe, and each water collecting pipe is connected to a plurality of shunt pipes in the radial direction, and a plurality of nozzles are arranged on each shunt pipe. Among them, the branch pipes and the water collecting pipes are one-to-one corresponding, the number can be adjusted according to actual needs, and the layout of the branch pipes, the water collecting pipes and the shunt pipes should also be reasonably configured according to the flow characteristics of the tail gas to ensure that the sprayed water is evenly distributed, and the dust removal effect is maximized. The number of shunt pipes and nozzles can be adjusted according to actual dust removal needs to ensure that the water sprayed by the nozzles can evenly cover the entire tail gas flow area in the tank body.

[0025] In one of the embodiments, a micro filter screen is arranged at one end of the water suction pipe inserted into the bottom cover to prevent the suction of waste residues. By arranging the micro filter screen, the cleanliness of the suction water is ensured, the water quality in the subsequent processing process is ensured, and the overall dust removal efficiency is improved; at the same time, the opportunity of waste residues entering the spraying mechanism is reduced, the frequency of cleaning and maintenance is reduced, and the maintenance cost is reduced.

[0026] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0027] The above-mentioned tail gas dust removal equipment for combustion furnace of environmental protection comprises a tank body, an upper cover, a bottom cover, a gas guide mechanism, a water injection pipe, a spraying mechanism, an exhaust pipe and a residue discharge valve pipe. The dust removal equipment is provided with the gas guide mechanism for guiding the tail gas in the middle of the tank body, which facilitates the introduction of the tail gas into the bottom of the tank body, thereby facilitating the full spraying of the spraying mechanism and greatly improving the dust removal efficiency; the water injection pipe facilitates the water replenishment in the tank body; the residue discharge valve pipe is arranged at the bottom of the bottom cover, which facilitates the discharge of the dust sinking in the water through the residue discharge valve pipe, and the tail gas after dust removal is discharged through the exhaust pipe.

[0028] In the gas guiding mechanism, a pressurizing component installed at the upper end of the flue gas pipe increases the gas pressure, facilitating gas entry into the bottom of the tank. A diffuser is located at the lower end of the flue gas pipe inside the bottom cover, with vents on its sides and top. This allows the exhaust gas to disperse through the vents into the water inside the bottom cover for initial dust removal. The design of the gas guiding mechanism ensures sufficient diffusion of the exhaust gas after entering the bottom of the tank, extending its contact time with water and improving dust settling rate, thus significantly enhancing dust removal efficiency. The gas, after initial dust removal, undergoes further dust removal via a spray system as it rises within the tank, further purifying the gas quality. Additionally, slag can be discharged periodically via a slag discharge valve. Compared to existing technologies that require frequent filter replacements, the dust removal equipment in this application is generally easy to maintain. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural schematic diagram of an environmentally friendly combustion furnace exhaust gas dust removal device in one embodiment;

[0031] Figure 2 This is a schematic cross-sectional view of an environmentally friendly combustion furnace exhaust gas dust removal device in one embodiment.

[0032] Figure 3 This is a schematic diagram of the spray mechanism in one embodiment;

[0033] Figure 4 for Figure 2 Enlarged structural diagram at point A;

[0034] Figure 5 for Figure 2 A magnified structural diagram at point B in the middle.

[0035] Attached reference numerals: 1-Tank body; 2-Top cover; 3-Bottom cover; 4-Fume guide pipe; 5-Air pump; 6-Expansion pipe; 7-Ventilation hole; 8-Sealing ring; 9-Water injection pipe; 10-Exhaust pipe; 11-Slag discharge valve pipe; 12-Water pump; 13-Water suction pipe; 14-Guide pipe; 15-Branch pipe; 16-Water collection pipe; 17-Diverter pipe; 18-Nozzle; 19-First filter screen; 20-Second filter screen; 21-Inner rubber ring; 22-Outer rubber ring. Detailed Implementation

[0036] For the purpose of promoting the understanding of the present application, the present application will be more fully described by referring to the accompanying drawings. The embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and should not be limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0038] The embodiments of the present application will be described in detail below with reference to the accompanying drawings of the embodiments of the present application.

[0039] In one embodiment, the three-dimensional structure of the tail gas dust removal equipment for the combustion furnace for environmental protection is shown in Figure 1 The cross-sectional structure of the tail gas dust removal equipment for the combustion furnace for environmental protection is shown in Figure 2 The present application provides a tail gas dust removal equipment for the combustion furnace for environmental protection, which comprises a tank body 1, an upper cover 2 installed on the upper end of the tank body 1 through a flange, a bottom cover 3 installed on the lower end of the tank body 1 through a flange, a gas guide mechanism arranged in the middle of the tank body 1 for guiding the tail gas, a spraying mechanism arranged in the tank body 1 for spraying dust removal, a water injection pipe 9 installed on the side of the tank body 1, a residue discharge valve pipe 11 installed on the bottom of the bottom cover 3 for discharging residue, and an exhaust pipe 10 installed on the side of the upper cover 2.

[0040] In the present embodiment, the upper end and the lower end of the tank body 1 are connected to the upper cover 2 and the bottom cover 3 through flanges, thereby facilitating the disassembly of the two ends of the tank body 1 and facilitating the maintenance of the tail gas dust removal equipment. The gas guide mechanism arranged in the middle of the tank body 1 facilitates the introduction of the tail gas into the bottom of the tank body 1 through the gas guide mechanism, thereby facilitating the spraying of the tail gas at the bottom of the tank body 1 by the spraying mechanism and facilitating the sinking of the dust in the tail gas into water under the action of the spraying, so as to achieve the purpose of treating the tail gas. The residue discharge valve pipe 11 installed on the bottom of the bottom cover 3 facilitates the discharge of the dust sunk in water through the residue discharge valve pipe 11, and the water injection pipe 9 facilitates the water replenishment in the tank body 1. The tail gas after dust removal is discharged through the exhaust pipe 10, thereby achieving the purpose of tail gas dust removal.

[0041] Specifically, the gas guide mechanism comprises a smoke guide pipe 4 arranged in the middle of the tank body 1, the upper end of the smoke guide pipe 4 penetrates through the upper cover 2 and is provided with a gas pump 5, the lower end of the smoke guide pipe 4 located in the bottom cover 3 is fixed with an expansion pipe 6, the bottom of the expansion pipe 6 is sealed, the side and the upper part of the expansion pipe 6 are both provided with air permeable holes 7 for air permeation, and a sealing ring 8 for sealing is arranged between the smoke guide pipe 4 and the upper cover 2.

[0042] The air guiding mechanism consists of a smoke guide pipe 4, an air pump 5, an expansion pipe 6, a vent hole 7, and a sealing ring 8. The lower end of the smoke guide pipe 4, located inside the bottom cover 3, is equipped with an expansion pipe 6, which facilitates the flow of exhaust gas through the vent holes 7 on the side and top. This allows the exhaust gas to be dispersed into the water inside the bottom cover 3 for preliminary dust removal. The air pump 5 installed at the upper end of the smoke guide pipe 4 increases the gas pressure, which is beneficial for the gas to enter the bottom cover 3. The sealing ring 8 between the smoke guide pipe 4 and the upper cover 2 facilitates the sealing between the upper cover 2 and the smoke guide pipe 4.

[0043] Combination Figure 3 As shown in the schematic diagram of the spraying mechanism, the spraying mechanism includes a water pump 12 installed on the outside of the bottom cover 3. A suction pipe 13 is installed at the water inlet end of the water pump 12, and the end of the suction pipe 13 is inserted into the inside of the bottom cover 3. A guide pipe 14 is installed at the output end of the water pump 12. A branch pipe 15 is installed on the side of the guide pipe 14. A water collection pipe 16 is installed at one end of the branch pipe 15 inserted into the tank 1. A diversion pipe 17 is installed on the inside of the water collection pipe 16. A nozzle 18 is installed on the surface of the diversion pipe 17. The guide pipe 14, branch pipe 15, water collection pipe 16, diversion pipe 17 and nozzle 18 are connected.

[0044] The spraying mechanism consists of a water pump 12, a suction pipe 13, a guide pipe 14, a branch pipe 15, a collection pipe 16, a diversion pipe 17, and a nozzle 18. The water pump 12 draws water from inside the bottom cover 3 into the guide pipe 14 through the suction pipe 13, and the water is then drawn into the diversion pipe 17 through the branch pipe 15 and the collection pipe 16. This allows the water inside the diversion pipe 17 to be sprayed by the nozzle 18, which is beneficial for removing dust from the exhaust gas through spraying.

[0045] Specifically, in combination Figure 2 , Figure 4 and Figure 5 (in, Figure 4 for Figure 2 Enlarged structural diagram at point A; Figure 5 for Figure 2 As shown in the enlarged structural diagram at point B in the middle: the tank body 1 is also equipped with a filter mechanism, which includes a first filter screen 19 and a second filter screen 20. Both the first filter screen 19 and the second filter screen 20 are sleeved on the outside of the smoke guide pipe 4. The first filter screen 19 and the second filter screen 20 are located on both sides of several water collection pipes 16, that is, on the upper and lower sides of the nozzles of the spraying mechanism.

[0046] In this embodiment, a first filter 19 and a second filter 20 are provided, and the first filter 19 and the second filter 20 are located on both sides of the water collection pipe 16. This facilitates the first filter 19 to filter the exhaust gas, and the second filter 20 to filter the exhaust gas again after spraying, which is beneficial for dust removal from the exhaust gas.

[0047] In the embodiment, four branch pipes 15 and four collecting pipes 16 are provided, and the branch pipes 15 and the collecting pipes 16 are in one-to-one correspondence. The inner ring and the outer ring of the first filter screen 19 and the second filter screen 20 are sleeved with an inner rubber ring 21 and an outer rubber ring 22, the inner rubber ring 21 is sleeved on the outside of the smoke guide pipe 4, and the outer rubber ring 22 is tightly attached to the inner surface of the tank body 1. In the embodiment, the first filter screen 19 and the second filter screen 20 are conveniently installed between the smoke guide pipe 4 and the tank body 1 through cooperation of the inner rubber ring 21 and the outer rubber ring 22.

[0048] In another embodiment, the pressurizing member is a compressor.

[0049] In another embodiment, the diffusing member includes a diffusing pipe.

[0050] In another embodiment, a micro filter screen is arranged at one end of the water suction pipe inserted into the bottom cover, for preventing waste residue from being sucked in.

[0051] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms “arranged”, “mounted”, “connected”, “linked” should be understood in a broad sense, for example, can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0052] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An environmentally friendly combustion furnace exhaust gas dust removal device, characterized in that, include: A tank body, with an upper cover connected to the upper end and a bottom cover connected to the lower end; The gas guiding mechanism includes a smoke guiding pipe in the middle of the tank body. The upper end of the smoke guiding pipe passes through the upper cover and is equipped with a pressurizing component. The lower end of the smoke guiding pipe, located inside the bottom cover, is fixed with a diffuser. The bottom of the diffuser is sealed, and the sides and top of the diffuser are provided with vent holes for ventilation. The gas guiding mechanism is used to guide the exhaust gas from the combustion furnace to the bottom of the tank body. Water injection pipe, which is connected to the tank, is used to inject water into the dust removal equipment; A spraying mechanism, comprising several water supply pipes and nozzles, is used to remove dust from the exhaust gas introduced by the air guiding mechanism. An exhaust pipe is provided on the side of the upper cover and is used to discharge purified gas after dust removal. A slag discharge valve pipe is installed at the bottom of the bottom cover and is used for slag discharge.

2. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 1, characterized in that, The pressurizing component is an air pump or a compressor.

3. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 2, characterized in that, The diffuser includes an expansion tube or a diffuser tube.

4. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 1, characterized in that, The tank body and the top cover are connected by a flange, and the tank body and the bottom cover are also connected by a flange.

5. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 4, characterized in that, A sealing ring is provided between the smoke guide tube and the top cover for sealing.

6. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to any one of claims 1 to 5, characterized in that, Also includes: The filtration mechanism includes a first filter screen, which is sleeved on the outside of the smoke guide pipe and disposed below the nozzle of the spray mechanism.

7. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 6, characterized in that, The filtration mechanism also includes: The second filter screen is also fitted over the outside of the smoke guide pipe and is positioned above the nozzle of the spray mechanism.

8. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 7, characterized in that, Both the first and second filter screens have inner rubber rings fitted around their inner rings, and both the first and second filter screens have outer rubber rings fitted around their outer rings. The inner rubber rings are fitted inside the smoke guide pipe, and the outer rubber rings are tightly attached to the inner surface of the tank.

9. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 1, characterized in that, The spraying mechanism includes: a suction pipe, a water pump, a guide pipe, a branch pipe, a collection pipe, a diversion pipe, and nozzles; One end of the suction pipe is inserted into the interior of the bottom cover. The water pump is connected to the other end of the suction pipe and the guide pipe. Several branch pipes are connected to the side of the guide pipe. One end of each branch pipe is inserted into the tank body and connected to the annular water collection pipe. The central axis of each water collection pipe coincides with that of the smoke guide pipe. Several diversion pipes are connected to each water collection pipe in the radial direction. Several nozzles are provided on each diversion pipe.

10. The environmentally friendly combustion furnace exhaust gas dust removal equipment according to claim 9, characterized in that, A microfilter is provided at one end of the water suction pipe that is inserted into the bottom cover to prevent the intake of waste residue.

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