Coal ash dissolving tank

Abstract

The utility model discloses a coal ash dissolving tank, which belongs to the technical field of dissolving tanks and comprises a first air duct pipe, and the top of the first air duct pipe is fixedly sleeved with a coal ash dissolving pipe. According to the device, coal ash is fed into the coal ash dissolving pipe from the coal ash feeding pipe, water is fed into the coal ash dissolving pipe from the coal ash water adding pipe, the water and the coal ash are rapidly mixed in the process that the water and the coal ash descend along the coal ash dissolving pipe, and the water and the coal ash are mixed into emulsion when the water and the coal ash reach the bottom of the coal ash dissolving pipe; the emulsion enters the bottom of the inner cavity of the first air duct, dust-containing air carried by the fly ash dissolving pipe during descending is dedusted for the first time by water at the bottom of the inner cavity of the first air duct, and the dust-containing air sequentially passes through inner cavities of the first air duct, the second air duct and the third air duct; and three-time dust removal is carried out through water sprayed by the spraying nozzles at the tops of the inner cavities of the first air duct, the second air duct and the third air duct, and the practicability is good.

Description

Technical Field

[0001] This utility model relates to the field of dissolving tank technology, and more specifically, to a coal ash dissolving tank. Background Technology

[0002] Fly ash is a residue produced during the industrial combustion of coal, such as in boilers or as a gasification feedstock. Based on its form, it can be divided into two categories: fly ash and slag. Fly ash is used in various industries, including papermaking. Dissolving it with water before use is an essential process. However, the small particle size of fly ash makes it prone to forming fly ash, and the slow dissolution rate limits the amount that can be added. These are two problems that urgently need to be solved in the dissolution process. Typically, such a system requires fly ash storage tanks, fly ash conveying equipment, and fly ash dissolution equipment. The investment in such a system is substantial, which restricts the use of fly ash on a small scale. To address the issue of small-scale fly ash use without requiring large-scale investment in dissolution and ash removal equipment, we propose the fly ash dissolution tank. Utility Model Content

[0003] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide a coal ash dissolving tank.

[0004] To solve the above problems, this utility model adopts the following technical solution: a coal ash dissolving tank, including a first air duct pipe, a fly ash dissolving pipe fixedly sleeved at the top of the first air duct pipe, the bottom end of the fly ash dissolving pipe extending into the inner cavity of the first air duct pipe and having multiple exhaust holes, a first air duct provided in the inner cavity of the first air duct pipe and located on the side of the fly ash dissolving pipe, a fly ash feed pipe fixedly sleeved at the middle of the top surface of the fly ash dissolving pipe, a fly ash water supply pipe fixedly sleeved on the side of the top surface of the fly ash dissolving pipe, a second air duct box fixedly connected to the side of the first air duct pipe, an air duct baffle fixedly connected to the inner cavity of the second air duct box, and the inner cavity of the second air duct box... A second air duct is provided on one side of the air duct partition, and a third air duct is provided on the other side of the air duct partition. An air outlet pipe is fixedly sleeved on the outside of the second air duct, and the end of the air outlet pipe extends into the inner cavity of the third air duct. A coal ash emulsion overflow trough is fixedly connected to the outside of the second air duct. An air guide is provided on the side of the top of the first air duct, and the air guide connects the inner cavities of the second air duct and the first air duct. An ash outlet is provided on the side of the bottom of the first air duct, and the ash outlet connects the bottom of the inner cavities of the first air duct, the second air duct, and the third air duct. A spraying mechanism is provided on the top of the first air duct and the second air duct box.

[0005] As a preferred embodiment of this utility model, the spraying mechanism includes multiple spray mounting holes on the top surface of the first air duct, two spray mounting holes on the top surface of the second air duct box, multiple sets of fixing nozzle screws fixedly connected to the top surface of the first air duct, and two sets of fixing nozzle screws fixedly connected to the top surface of the second air duct box. Fixing nozzle caps are respectively fitted on the multiple sets of fixing nozzle screws. Fixing nozzle nuts are threaded onto the top surface of each fixing nozzle screw. Spray head water inlet pipes are fixedly fitted into the middle of each of the multiple fixing nozzle caps. The bottom ends of two of the spray head water inlet pipes extend through the spray mounting holes to the inner cavities of the second and third air ducts and are fixedly connected to spray nozzles. The bottom ends of the remaining spray head water inlet pipes extend through the spray mounting holes to the inner cavity of the first air duct and are fixedly connected to other spray nozzles.

[0006] As a preferred embodiment of this utility model, the bottom end of the No. 2 air duct box is provided with a pull-out groove, one end of the pull-out groove is connected to the side of the No. 2 air duct box, the inner cavity of the pull-out groove is fitted with a water seal wall plate, the top surface and bottom surface of the water seal wall plate are respectively attached to the top surface and bottom surface of the inner cavity of the pull-out groove, and the end of the water seal wall plate extends to the side of the No. 2 air duct box.

[0007] As a preferred embodiment of this utility model, a bottom water supply pipe is fixedly installed on the side of the bottom end of the No. 1 air duct.

[0008] As a preferred embodiment of this utility model, a fixed nozzle sealing gasket is provided between the bottom surface of the plurality of fixed nozzle caps and the top surface of the No. 1 air duct pipe and the No. 2 air duct box.

[0009] In a preferred embodiment of this utility model, the bottom end of the fly ash dissolving pipe is higher than the top surface of the inner cavity of the ash outlet.

[0010] The advantages of this invention are as follows: In this invention, coal ash is fed into the coal ash dissolving pipe from the coal ash feed pipe, and water is fed into the coal ash dissolving pipe from the coal ash water supply pipe. As the water and coal ash descend along the coal ash dissolving pipe, they mix rapidly. When they reach the bottom of the coal ash dissolving pipe, the water and coal ash mix to form an emulsion. The emulsion enters the bottom of the inner cavity of the first air duct. At the same time, the dust-laden air carried by the coal ash dissolving pipe as it descends is first purged by the water at the bottom of the inner cavity of the first air duct. In addition, the dust-laden air passes through the inner cavities of the first, second, and third air ducts in sequence, and is purged three times by the water sprayed from the spray nozzles at the top of the inner cavities of the first, second, and third air ducts. This multiple purging process ensures the quality of coal ash dissolution. Furthermore, the emulsion produced by dissolution is discharged from the ash outlet, the extraction trough, and the coal ash emulsion overflow trough. This structure requires a small investment, can realize the function of small-scale coal ash solution production, and has good practicality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a top view of the entire utility model;

[0013] Figure 3 This is a side view of the entire utility model;

[0014] Figure 4 This is a cross-sectional schematic diagram of the No. 1 air duct of this utility model;

[0015] Figure 5 This is a cross-sectional schematic diagram of the No. 2 air duct box of this utility model;

[0016] Figure 6 This utility model Figure 4 Enlarged diagram of point A in the diagram.

[0017] The following are the labels in the diagram: 1. Fly ash feed pipe; 2. Fly ash water supply pipe; 3. Fly ash dissolving pipe; 4. No. 1 air duct pipe; 5. Sprayer installation hole; 6. Air outlet pipe; 7. First air duct; 8. Second air duct; 9. Third air duct; 10. Air guide port; 11. Air duct partition; 12. Spray nozzle; 13. Spray nozzle water inlet pipe; 14. Fixed spray nozzle sealing gasket; 15. Fixed spray nozzle gland; 16. Fixed spray nozzle screw; 17. Fixed spray nozzle nut; 18. Bottom supplementary water supply pipe; 19. Fly ash emulsion overflow trough; 20. Ash outlet; 21. Water seal wall plate; 22. Exhaust hole; 23. No. 2 air duct box; 24. Pull-out trough; 25. Spraying mechanism. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1:

[0021] Please see Figures 1-6 The coal ash dissolving tank includes a first air duct 4, with a fly ash dissolving pipe 3 fixedly sleeved at the top of the first air duct 4. The bottom end of the fly ash dissolving pipe 3 extends into the inner cavity of the first air duct 4 and has multiple exhaust holes 22. A first air duct 7 is provided in the inner cavity of the first air duct 4 and on the side of the fly ash dissolving pipe 3. A fly ash feed pipe 1 is fixedly sleeved at the middle of the top surface of the fly ash dissolving pipe 3. A fly ash water supply pipe 2 is fixedly sleeved on the side of the top surface of the fly ash dissolving pipe 3. A second air duct box 23 is fixedly connected to the side of the first air duct 4. An air duct baffle 11 is fixedly connected to the inner cavity of the second air duct box 23. A third air duct box 23 is provided in the inner cavity of the second air duct box 23 and on one side of the air duct baffle 11. A third air duct 9 is provided on the other side of the air duct partition 11 within the inner cavity of the second air duct box 23 and the second air duct box 23. An air outlet pipe 6 is fixedly sleeved on the outer side of the second air duct box 23, and the end of the air outlet pipe 6 extends into the inner cavity of the third air duct 9. A coal ash emulsion overflow trough 19 is fixedly connected to the outer side of the second air duct box 23. An air guide 10 is provided on the side of the top end of the first air duct pipe 4, and the air guide 10 connects the inner cavities of the second air duct 8 and the first air duct 7. An ash outlet 20 is provided on the side of the bottom end of the first air duct pipe 4, and the ash outlet 20 connects the bottom of the inner cavities of the first air duct 7, the second air duct 8, and the third air duct 9. A spraying mechanism 25 is provided on the top of the first air duct pipe 4 and the second air duct box 23.

[0022] In this embodiment, the inner diameter of the vent 22 is between 5 mm and 8 mm, and the top of the fly ash water pipe 2 is connected to an external water pipe, which has a valve.

[0023] For details, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 6The spray mechanism 25 includes multiple spray mounting holes 5 on the top surface of the first air duct 4, two spray mounting holes 5 on the top surface of the second air duct box 23, multiple sets of fixing nozzle screws 16 fixedly connected to the top surface of the first air duct 4, and two sets of fixing nozzle screws 16 fixedly connected to the top surface of the second air duct box 23. Fixing nozzle caps 15 are respectively fitted on the multiple sets of fixing nozzle screws 16. Fixing nozzle nuts 17 are threaded on the top surface of each fixing nozzle screw 16. Spray head water inlet pipes 13 are fixedly fitted in the middle of each of the multiple fixing nozzle caps 15. The bottom ends of two spray head water inlet pipes 13 extend through the spray mounting holes 5 to the inner cavities of the second air duct 8 and the third air duct 9, respectively, and are fixedly connected to spray nozzles 12. The bottom ends of the remaining spray head water inlet pipes 13 extend through the spray mounting holes 5 to the inner cavity of the first air duct 7, respectively, and are fixedly connected to other spray nozzles 12.

[0024] In this embodiment, the top end of the nozzle inlet pipe 13 is connected to the external water supply pipe, so that the spray water is sprayed from the nozzle 12 to the inner cavity of the first air duct 7, the second air duct 8 and the third air duct 9. The external water supply pipe has its own valve.

[0025] For details, please refer to Figure 1 and Figure 4 The bottom end of the second air duct box 23 is provided with a pull-out groove 24. One end of the pull-out groove 24 is connected to the side of the second air duct box 23. A water seal wall plate 21 is fitted inside the inner cavity of the pull-out groove 24. The top and bottom surfaces of the water seal wall plate 21 are respectively attached to the top and bottom surfaces of the inner cavity of the pull-out groove 24. The end of the water seal wall plate 21 extends to the side of the second air duct box 23.

[0026] In this embodiment, the water seal plate 21 is used to seal the pull-out groove 24. At the same time, the water seal plate 21 can be pulled out to allow the emulsion of fly ash and water in the inner cavity of the No. 1 air duct 4 and the No. 2 air duct box 23 to enter the fly ash emulsion overflow trough 19 and be discharged from the fly ash emulsion overflow trough 19. When the water seal plate 21 is pulled out, one end of the water seal plate 21 is located in the inner cavity of the pull-out groove 24 on the side of the No. 2 air duct box 23, so as to seal the end of the pull-out groove 24.

[0027] For details, please refer to Figure 4 A bottom water supply pipe 18 is fixedly installed on the side of the bottom end of the No. 1 air duct pipe 4.

[0028] In this embodiment, the bottom water supply pipe 18 is equipped with a valve, which is used to close the bottom water supply pipe 18 after water is filled into the inner cavity of the first air duct pipe 4 and the second air duct box 23. In addition, the end of the bottom water supply pipe 18 is connected to the external water pipe.

[0029] For details, please refer to Figure 6A fixed nozzle sealing gasket 14 is provided between the bottom surface of multiple fixed nozzle caps 15 and the top surface of No. 1 air duct pipe 4 and No. 2 air duct box 23.

[0030] In this embodiment, the fixed nozzle sealing gasket 14 is used to ensure the installation sealing between the fixed nozzle cover 15 and the first air duct pipe 4, and between the fixed nozzle cover 15 and the second air duct box 23.

[0031] For details, please refer to Figure 4 The bottom end of the fly ash dissolving pipe 3 is higher than the top surface of the inner cavity of the ash outlet 20.

[0032] In this embodiment, it is ensured that the dust-laden air entering the inner cavity of the first air duct 7 from the exhaust port 22 can move smoothly upward and enter the inner cavity of the second air duct 8 from the air guide port 10, thus preventing the dust-laden air from entering the inner cavity of the second air duct 8 from the dust outlet 20.

[0033] Working principle: In operation, the fly ash is first fed from the fly ash feed pipe 1 into the fly ash dissolving pipe 3 using a pneumatic conveying device. Simultaneously, the water required for dissolving the fly ash enters the fly ash dissolving pipe 3 from the fly ash water supply pipe 2. As the water and fly ash descend along the fly ash dissolving pipe 3, they mix rapidly. By the bottom of the fly ash dissolving pipe 3, the water and fly ash have formed an emulsion. Air mixed with the fly ash also descends along the fly ash dissolving pipe 3, reaching the lower end of the pipe. Afterwards, since the lower end of the fly ash dissolving pipe 3 is submerged in water and the pipe wall is evenly distributed with exhaust holes 22, air overflows from the lower end of the fly ash dissolving pipe 3 through the evenly distributed exhaust holes 22 and the lower edge, and enters the first air duct 7. The small holes are used to reduce the size of the air bubbles and improve the ash removal efficiency. The dust-laden air enters the water, causing the dust in the air to be removed for the first time. Then the air enters the first air duct 7 and rises along the duct. The top of the inner cavity of the first air duct 7 is equipped with an evenly distributed spray mechanism 25, which uses spray nozzles 1 on the spray mechanism 25. 2. The downward sprayed water performs a second dust removal on the upward-moving dusty air. The air rising to the top enters the second air duct 8 through the air guide 10 on the side wall of the first air duct 4 and descends along the second air duct 8. The upper part of the inner cavity of the second air duct 8 is also equipped with a spraying mechanism 25. During this process, the dusty air is subjected to a third dust removal by the water sprayed downward by the spray nozzles 12. After descending along the second air duct 8, the dusty air bypasses the air duct partition 11 and enters the third air duct 9, and ascends along the third air duct 9. The upper part of the inner cavity of the third air duct 9 is also equipped with a spraying machine. Structure 25 utilizes water sprayed downwards from the spray nozzle 12 to perform a fourth dust removal on the dust-laden air. When the air rises to the top of the third air duct 9, it is discharged from the air outlet pipe 6, completing the dust removal process for the dust-laden air. Finally, the emulsion of fly ash and water descends to the bottom along the fly ash dissolving pipe 3 and flows from the ash outlet 20 into the bottom of the inner cavity of the second air duct 8 and the third air duct 9. The water seal plate 21 is then pulled out to release the blockage on the pull-out groove 24, allowing the emulsion to enter the fly ash emulsion overflow groove 19 and flow out from the overflow groove 19.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A coal ash dissolving tank, characterized in that: The system includes a No. 1 air duct (4), to which a fly ash dissolving pipe (3) is fixedly sleeved. The bottom end of the fly ash dissolving pipe (3) extends into the inner cavity of the No. 1 air duct (4) and is provided with multiple exhaust holes (22). A first air duct (7) is provided in the inner cavity of the No. 1 air duct (4) and on the side of the fly ash dissolving pipe (3). A fly ash feed pipe (1) is fixedly sleeved in the middle of the top surface of the fly ash dissolving pipe (3). A fly ash water supply pipe (2) is fixedly sleeved on the side of the top surface of the fly ash dissolving pipe (3). A second air duct box (23) is fixedly connected to the side of the No. 1 air duct (4). An air duct partition (11) is fixedly connected to the inner cavity of the second air duct box (23). A second air duct (8) is provided in the inner cavity of the second air duct box (23) and on one side of the air duct partition (11). A third air duct (9) is provided in the inner cavity of the second air duct box (23) and on the other side of the air duct partition (11). An air outlet pipe (6) is fixedly sleeved on the outer side of the second air duct box (23). The end of the air outlet pipe (6) extends to the inner cavity of the third air duct (9). A coal ash emulsion overflow trough (19) is fixedly connected to the outer side of the second air duct box (23). An air guide port (10) is provided on the side of the top of the first air duct pipe (4). The air guide port (10) connects the inner cavity of the second air duct (8) and the first air duct (7). An ash outlet (20) is provided on the side of the bottom end of the first air duct pipe (4). The ash outlet (20) connects the bottom of the inner cavity of the first air duct (7) and the second air duct (8) and the third air duct (9). A spraying mechanism (25) is provided on the top of the first air duct pipe (4) and the second air duct box (23).

2. The coal ash dissolving tank according to claim 1, characterized in that: The spraying mechanism (25) includes multiple spray mounting holes (5) on the top surface of the first air duct (4), two spray mounting holes (5) on the top surface of the second air duct box (23), multiple sets of fixed nozzle screws (16) fixedly connected to the top surface of the first air duct (4), and two sets of fixed nozzle screws (16) fixedly connected to the top surface of the second air duct box (23). Fixed nozzle caps (15) are respectively fitted on the multiple sets of fixed nozzle screws (16), and the top surface of each fixed nozzle screw (16) is threaded. A nozzle fixing nut (17) is installed, and a nozzle inlet pipe (13) is fixedly sleeved in the middle of a plurality of nozzle fixing caps (15). The bottom ends of two of the nozzle inlet pipes (13) pass through the spray mounting hole (5) and extend into the inner cavity of the second air duct (8) and the third air duct (9) respectively, and are fixedly connected to the spray nozzles (12). The bottom ends of the remaining nozzle inlet pipes (13) pass through the spray mounting hole (5) and extend into the inner cavity of the first air duct (7) respectively, and are fixedly connected to other spray nozzles (12).

3. The coal ash dissolving tank according to claim 1, characterized in that: The bottom end of the second air duct box (23) is provided with a pull-out groove (24). One end of the pull-out groove (24) is connected to the side of the second air duct box (23). The inner cavity of the pull-out groove (24) is fitted with a water seal wall plate (21). The top and bottom surfaces of the water seal wall plate (21) are respectively attached to the top and bottom surfaces of the inner cavity of the pull-out groove (24). The end of the water seal wall plate (21) extends to the side of the second air duct box (23).

4. The coal ash dissolving tank according to claim 1, characterized in that: A bottom water supply pipe (18) is fixedly installed on the side of the bottom end of the No. 1 air duct (4).

5. The coal ash dissolving tank according to claim 2, characterized in that: A fixed nozzle sealing gasket (14) is provided between the bottom surface of the multiple fixed nozzle caps (15) and the top surface of the No. 1 air duct pipe (4) and the No. 2 air duct box (23).

6. The coal ash dissolving tank according to claim 1, characterized in that: The bottom end of the fly ash dissolving pipe (3) is higher than the top surface of the inner cavity of the ash outlet (20).

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