Demisting and dust-falling device for slag bin

Abstract

The utility model discloses a demisting and dust falling device for a slag bin, and relates to the technical field of waste incineration power generation. The slag bin demisting and dust falling device comprises a slag bin, a suction fan and a water film dust remover are arranged outside the slag bin, an inlet of the suction fan is communicated with an outlet of the water film dust remover, an air suction mother pipe is arranged in the slag bin, one end of the air suction mother pipe is communicated with an inlet of the water film dust remover, and a plurality of air suction openings are formed in the air suction mother pipe. The air suction mother pipe is of a diverging pipe structure in the flowing direction of media in the air suction mother pipe. The suction fan is used for providing suction force, so that the pressure at the air suction opening is smaller than that at the outlet of the suction fan, and under the action of pressure difference, raised dust and water vapor in the slag bin are sucked into the air suction mother pipe by the air suction opening along with air, are fed into the water film dust remover through the air suction mother pipe for dust removal and filtration and then are discharged into the surrounding environment from the outlet of the suction fan; and the purposes of demisting and dust falling of the slag bin are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of waste incineration power generation, in particular to a slag bin demisting and dust reducing device. BACKGROUND

[0002] In the process of waste incineration power generation, the slag after incineration of waste in an incinerator and the accumulated ash discharged from a flue are temporarily stored in a slag bin. Since the slag and the accumulated ash have a high temperature, cooling water needs to be used for temperature reduction, and a large amount of water vapor is generated in the process, which carries wet ash into the air, resulting in humid space in the slag bin, affecting the vision and causing short circuit damage of electrical equipment and corrosion damage of mechanical equipment.

[0003] In addition, the slag in the slag bin also needs to be regularly loaded into a self-unloading vehicle by a slag crane grab and then sent to a slag plant for comprehensive utilization. Dust and water mist are generated in the loading process, resulting in long-term accumulation of mist and dust in the slag bin, which seriously affects the vision of the slag crane operator and the vision of the vehicle driver, reduces the slag loading efficiency of the slag crane, causes excessive accumulation of slag in the slag bin, reduces the available capacity of the slag bin, and causes great safety hazards to the continuous and stable operation of the power plant. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a slag bin demisting and dust reducing device to solve the problem of too much mist and dust in the slag bin.

[0005] The application adopts the technical scheme to solve the technical problem:

[0006] A slag bin demisting and dust reducing device comprises a slag bin, an air suction fan and a water film dust collector are arranged outside the slag bin, the inlet of the air suction fan is communicated with the outlet of the water film dust collector, an air suction main pipe is arranged in the slag bin, one end of the air suction main pipe is communicated with the inlet of the water film dust collector, a plurality of air suction openings are arranged on the air suction main pipe, and the air suction main pipe has a gradually expanding pipe structure along the direction of medium flow in the air suction main pipe.

[0007] Further, the air suction main pipe comprises a plurality of pipe sections connected in sequence, and the cross-sectional size of the plurality of pipe sections gradually increases along the direction of medium flow in the pipe sections.

[0008] Further, at least one air suction opening is arranged on each pipe section.

[0009] Further, the air suction opening is communicated with the outlet of the air valve.

[0010] Further, all the air valves can be linked or controlled individually.

[0011] Further, the inlet of the air valve is provided with a filter screen air opening.

[0012] Further, the air suction fan and the water film dust collector are arranged on the top of the slag bin.

[0013] Further, the air exhaust pipe is further arranged.

[0014] Further, the air exhaust elbow is further arranged, the inlet of the air exhaust elbow is communicated with the outlet of the air exhaust pipe, and the outlet of the air exhaust elbow faces downward.

[0015] Further, the sidewall of the slag bin is provided with a plurality of vehicle entrances and exits, and the top of the vehicle entrance and exit is provided with a downward air blowing warm air curtain.

[0016] The beneficial effects of the present application are as follows:

[0017] The slag bin defogging and dust reducing device provided by the embodiment of the present application utilizes the suction force provided by the air suction fan to make the pressure at the suction port smaller than the pressure at the outlet of the air suction fan, under the action of the pressure difference, the dust and water vapor in the slag bin are sucked into the air suction main pipe by the suction port, and then are sent into the water film dust collector for dust removal and filtration, and then are discharged to the surrounding environment from the outlet of the air suction fan, thereby achieving the purpose of defogging and dust reducing of the slag bin, avoiding long-term accumulation of the fog and dust in the slag bin, preventing the view of the operator of the ash and slag hoist and the view of the driver of the transfer vehicle, and improving the efficiency of the slag hoist in grabbing slag and loading the vehicle; by arranging a plurality of suction ports on the air suction main pipe, a wider area in the slag bin can be covered, the suction dead zone is reduced, and the defogging and dust reducing performance is improved; by arranging the air suction main pipe in a gradually expanding pipe structure along the direction of the flow of the medium in the pipe, the pressure drop and energy loss caused by friction are reduced, the conveying efficiency is improved, the pipeline vibration and noise are reduced, and the energy consumption and maintenance cost are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is the front view of the slag bin defogging and dust reducing device provided by the embodiment of the present application;

[0020] Figure 2 is the side view of the slag bin defogging and dust reducing device provided by the embodiment of the present application;

[0021] Figure 3 is the structural schematic view of the air suction main pipe.

[0022] Reference signs:

[0023] 10-Slag bin;

[0024] 101 - Vehicle import / export;

[0025] 11- Suction fan;

[0026] 12-Water film dust collector;

[0027] 13-Suction main pipe;

[0028] 131-pipe section;

[0029] 14 - Air intake;

[0030] 15-Air valve;

[0031] 16-Filter air outlet;

[0032] 17-Exhaust duct;

[0033] 18-Exhaust elbow;

[0034] 19-Warm air curtain;

[0035] 20-Ash and Slag Crane;

[0036] 21-First connecting tube;

[0037] 22-Second connecting pipe;

[0038] 23-Support base;

[0039] 24 - Roller shutter door. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0041] In the description of this application, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] See Figure 1 , Figure 2 This application provides a slag bin demisting and dust suppression device, including a slag bin 10. A suction fan 11 and a water film dust collector 12 are provided outside the slag bin 10. The inlet of the suction fan 11 is connected to the outlet of the water film dust collector 12. A suction main pipe 13 is provided inside the slag bin 10. One end of the suction main pipe 13 is connected to the inlet of the water film dust collector 12. A plurality of suction ports 14 are provided on the suction main pipe 13. The suction main pipe 13 has a gradually expanding pipe structure along the direction of the flow of the medium inside it.

[0044] Specifically, the slag bin 10 is connected to the incinerator and flue to store slag from the incinerator and ash discharged from the flue. An ash crane 20 is installed inside the slag bin 10 for grabbing slag; the ash crane 20 can move horizontally within the slag bin 10. A vehicle inlet / outlet 101 is provided on the side wall of the slag bin 10, which can serve as a slag outlet for slag transport vehicles. By utilizing the ash crane 20 and the slag transport vehicles, the slag in the slag bin 10 can be periodically transported to a slag yard for comprehensive utilization.

[0045] The slag bin 10 is externally equipped with a suction fan 11 and a water film dust collector 12, and internally equipped with a suction main pipe 13. The inlet of the suction fan 11 is connected to the outlet of the water film dust collector 12 via a first connecting pipe 21, and the inlet of the water film dust collector 12 is connected to one end of the suction main pipe 13 via a second connecting pipe 22. The suction main pipe 13 can be equipped with a plurality of suction ports 14. For example, the plurality of suction ports 14 are spaced apart along the length of the suction main pipe 13. By utilizing the combined functions of the suction fan 11, the water film dust collector 12, and the suction main pipe 13, the slag bin 10 can be periodically demisted and dust-reduced.

[0046] See Figure 1 , Figure 2The slag bin demisting and dust suppression device provided in this application embodiment is used to demist and suppress dust in the slag bin 10. Its working principle is as follows: start the suction fan 11 and the water film dust collector 12. The suction fan 11 provides suction force so that the pressure at the suction port 14 is less than the pressure at the outlet of the suction fan 11. Under the action of this pressure difference, the dust and water vapor in the slag bin 10 are drawn into the suction pipe 13 along with the air through the suction port 14, and then sent to the water film dust collector 12 for dust removal and filtration before being discharged to the surrounding environment from the outlet of the suction fan 11.

[0047] The slag silo demisting and dust suppression device provided in this application embodiment can demist and suppress dust in the slag silo 10, preventing the long-term accumulation of mist and dust in the slag silo 10, preventing it from affecting the vision of the ash crane operators and the drivers of the transfer vehicles, and improving the efficiency of slag crane grabbing and loading. By setting several suction ports 14 on the suction main pipe 13, not only can a wider area be covered in the slag silo 10, reducing the suction dead zone, thereby improving the demisting and dust suppression performance of the entire device, but also, when one suction port 14 fails or is blocked, the other suction ports 14 can still maintain the operation of the entire device, improving the stability of the entire device. By setting the suction main pipe 13 as a gradually expanding pipe structure along the direction of the medium flow, the cross-sectional dimension of the suction main pipe 13 gradually increases along the direction of the medium flow, thereby reducing the pressure drop and energy loss caused by friction, helping to improve the conveying efficiency, reduce pipeline vibration and noise, and thus reduce energy consumption and maintenance costs.

[0048] Several support seats 23 are fixed on the inner surface of the side wall of the slag bin 10, and the suction main pipe 13 is installed on the support seats 23. One suction main pipe 13 or two or more suction main pipes 13 can be installed in the slag bin 10. The specific location and number should be set according to theoretical calculations, and no specific limitation is made here.

[0049] The suction main pipe 13 can be a tapered pipe with one end larger than the other. The larger end of the tapered pipe can be connected to the inlet of the water film dust collector 12 through the second connecting pipe 22, thereby enabling the suction main pipe 13 to form a gradually expanding pipe structure with the cross-sectional size gradually increasing along the direction of the internal medium flow.

[0050] In some embodiments, see Figure 3 The suction header 13 comprises multiple pipe sections 131 connected in sequence. The cross-sectional dimensions of the multiple pipe sections 131 gradually increase along the direction of medium flow, thereby forming a gradually expanding pipe structure with a cross-sectional dimension that gradually increases along the direction of medium flow. Each pipe section 131 may be provided with at least one suction port 14. Of course, some pipe sections 131 may not be provided with suction ports 14, and no specific limitation is made here.

[0051] For example, see Figure 3The medium within the suction header 13 flows from left to right. The suction header 13 comprises four sequentially connected pipe sections 131, with adjacent pipe sections 131 connected by a tapered tube. Each pipe section 131 has a suction port 14. The four pipe sections 131, from left to right, are: first pipe section 131, second pipe section 131, third pipe section 131, and fourth pipe section 131. The cross-sectional dimension of the first pipe section 131 is smaller than that of the second pipe section 131, the second pipe section 131 is smaller than that of the third pipe section 131, and the third pipe section 131 is smaller than that of the fourth pipe section 131. Each pipe section 131 can be a constant cross-section structure with the same cross-sectional dimension along the medium flow direction, or a variable cross-section structure with the cross-sectional dimension gradually increasing along the medium flow direction.

[0052] In some embodiments, see Figure 3 The air intake 14 is connected to the outlet of the air valve 15. Accordingly, by setting the air valve 15, the airflow of the air intake 14 can be adjusted to adapt to different process requirements and environmental conditions. In the case of multi-point air intake, the air valve 15 can also adjust the airflow of different air intakes 14. When the slag in the slag bin 10 near a certain air intake 14 is cleaned away, the air valve 15 can be used to close that air intake 14.

[0053] In some embodiments, all air valves 15 can be controlled in conjunction with each other or individually. For example, all air valves 15 can be electric air valves and connected to a controller to achieve coordinated control; all air valves 15 can also be manual air valves to achieve individual control.

[0054] In some embodiments, see Figure 3 The inlet of the air valve 15 is equipped with a filter screen vent 16. The filter screen vent 16 serves as a preliminary filter, used to filter out large particles of slag, preventing them from entering the pipes and clogging them. Dust in the slag bin 10 can pass through the filter screen vent 16 and be sucked away. The filtration accuracy of the filter screen vent 16 should be set according to the size of the large particles of slag that need to be filtered, and no specific limit is made here.

[0055] In some embodiments, see Figure 1 , Figure 2 The suction fan 11 and the water film dust collector 12 are both located on top of the slag bin 10. Accordingly, this structure allows the suction fan 11 and the water film dust collector 12 to be installed in the slag bin 10, avoiding the suction fan 11 and the water film dust collector 12 occupying additional installation space, making the entire device more compact.

[0056] In some embodiments, see Figure 1It also includes an exhaust duct 17 connected to the outlet of the suction fan 11. Accordingly, the exhaust duct 17 can guide the airflow generated by the suction fan 11 to flow in a predetermined direction and path, ensuring that air can be effectively delivered from the suction fan 11 to the area where it needs to be discharged; the exhaust duct 17 can also help maintain the pressure at the outlet of the suction fan 11, reduce pressure loss, and improve suction efficiency. For example, the exhaust duct 17 is horizontally arranged, with one end connected to the outlet of the suction fan 11 via an elbow.

[0057] In some embodiments, see Figure 1 It also includes an exhaust elbow 18, the inlet of which is connected to the outlet of the exhaust pipe 17, and the outlet of the exhaust elbow 18 faces downward. Accordingly, the exhaust elbow 18 forms a rainproof bend, which can prevent rainwater from falling into the exhaust pipe 17 and play a role in rain protection.

[0058] In some embodiments, see Figure 1 , Figure 2 The slag bin 10 has several vehicle inlets and outlets 101 on its side wall, and the top of each vehicle inlet and outlet 101 is equipped with a downward-blowing warm air curtain 19. Each vehicle inlet and outlet 101 may also be equipped with a roller shutter door 24 that can be opened and closed. For example, the slag bin 10 has three vehicle inlets and outlets 101 on its side wall, two of which are used as slag outlets for slag transport vehicles to pass through, and the other vehicle inlet and outlet 101 serves as a backup outlet.

[0059] By installing a warm air curtain 19 at the top of the vehicle entrance / exit 101, when the roller shutter door 24 is opened, the warm air curtain 19 can blow warm air downwards to cover the vehicle entrance / exit 101 and form a warm air curtain. The warm air curtain can isolate the inside and outside of the vehicle entrance / exit 101, which can not only prevent dust from overflowing from the slag bin 10, but also prevent cold air from entering the slag bin 10 in the cold winter, preventing the hot air inside the slag bin 10 from convecting with the cold air outside the slag bin 10 to generate water mist.

[0060] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A dust suppression and demisting device for slag bins, characterized in that, The slag bin (10) includes a slag bin (10), which is equipped with a blower (11) and a water film dust collector (12). The inlet of the blower (11) is connected to the outlet of the water film dust collector (12). The slag bin (10) is equipped with a main suction pipe (13), one end of which is connected to the inlet of the water film dust collector (12). The main suction pipe (13) is equipped with several suction ports (14). The main suction pipe (13) has a gradually expanding pipe structure along the direction of the flow of the medium inside it.

2. The slag silo demisting and dust suppression device according to claim 1, characterized in that, The suction main pipe (13) includes multiple pipe sections (131) connected in sequence, and the cross-sectional dimensions of the multiple pipe sections (131) gradually increase along the direction of the flow of the medium inside.

3. The slag silo demisting and dust suppression device according to claim 2, characterized in that, Each of the pipe sections (131) is provided with at least one of the air intakes (14).

4. The slag silo demisting and dust suppression device according to claim 1, 2 or 3, characterized in that, The air intake (14) is connected to the outlet of the air valve (15).

5. The slag silo demisting and dust suppression device according to claim 4, characterized in that, All air valves (15) can be linked or controlled individually.

6. The slag bin demisting and dust suppression device according to claim 4, characterized in that, The air valve (15) is equipped with a filter air outlet (16) at its inlet.

7. The slag bin demisting and dust suppression device according to claim 1, 2 or 3, characterized in that, The suction fan (11) and the water film dust collector (12) are both located on the top of the slag bin (10).

8. The slag bin demisting and dust suppression device according to claim 1, 2 or 3, characterized in that, It also includes an exhaust pipe (17) connected to the outlet of the suction fan (11).

9. The slag silo demisting and dust suppression device according to claim 8, characterized in that, It also includes an exhaust elbow (18), the inlet of which is connected to the outlet of the exhaust pipe (17), and the outlet of the exhaust elbow (18) faces downward.

10. The slag bin demisting and dust suppression device according to claim 1, characterized in that, The slag bin (10) has several vehicle inlets and outlets (101) on its side wall, and the top of the vehicle inlets and outlets (101) is provided with a downward-blowing warm air curtain (19).

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