A waste heat recovery ash hopper for dry coke quenching ground dust removal station

Abstract

The utility model discloses a waste heat recovery ash hopper of a dry coke quenching ground dust removal station, which relates to the technical field of environmental protection equipment, including a support assembly, a recovery hopper, a water bin and a water pump; the recovery hopper includes an ash bin and a first heat exchange tube arranged on the outer surface of the ash bin, the first heat exchange tube is provided with a first opening, and the first heat exchange tube is provided with a second opening; the water bin includes a first water storage tank, a second water storage tank and a heat exchange assembly; the first water storage tank is provided with a water inlet and a water outlet; the first opening is connected to the water inlet through a pipeline, the water outlet is connected to the water pump, and the water pump is connected to the second opening; the side wall of the first water storage tank is connected to the side wall of the second water storage tank through a heat exchange assembly. The utility model utilizes the first heat exchange tube and the first heat transfer fluid in the first water storage tank to transfer the heat of the coke ash to the water bin, and then utilizes the heat transfer assembly to transfer the heat of the first heat transfer fluid to the second heat transfer fluid for storage, thereby realizing the recovery of the heat of the coke ash, which is efficient and stable and has a small requirement for temperature difference.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a waste heat recovery ash hopper of a dry coke quenching ground dust removal station. Background Art

[0002] CDQ is a coke quenching process that uses inert gas to cool down red coke. The supporting equipment of this process usually includes a dust removal station. The dust removal station is usually connected to the CDQ furnace and is used to store coke ash and recover the heat in the coke ash to achieve energy saving and environmental protection.

[0003] In traditional technology, the dust removal station generally includes a waste heat boiler. The coke ash is placed in the inner cavity of the waste heat boiler and exchanges heat with the hot water in the waste heat boiler. This is a passive heat exchange, which has high requirements for temperature difference and low efficiency. Summary of the invention

[0004] In order to overcome the problem in the above-mentioned background technology that "heat recovery of waste heat boilers in traditional dust removal stations has high requirements on temperature difference and low efficiency", the utility model provides a waste heat recovery ash hopper for a dry coke quenching ground dust removal station.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A waste heat recovery ash hopper of a dry coke quenching ground dust removal station comprises a support assembly, a recovery hopper, a water bin and a water pump; the recovery hopper is installed in the support assembly, and the water bin is installed in the support assembly; the recovery hopper comprises an ash collecting bin and a first heat exchange tube arranged on the outer surface of the ash collecting bin, the first heat exchange tube is provided with a first opening, and the first heat exchange tube is provided with a second opening; the water bin comprises a first water storage tank, a second water storage tank and a heat exchange assembly; the first water storage tank is provided with a water inlet and a water outlet; the first opening is connected to the water inlet through a pipeline, the water outlet is connected to the water pump, and the water pump is connected to the second opening; the side wall of the first water storage tank is connected to the side wall of the second water storage tank through the heat exchange assembly.

[0007] As a further optimization solution of the present utility model, the first heat exchange tube is spiral.

[0008] As a further optimization solution of the present invention, the first opening is arranged at the top of the first heat exchange tube.

[0009] As a further optimization solution of the present invention, the second opening is arranged at the bottom of the first heat exchange tube.

[0010] As a further optimization solution of the present utility model, the recovery bucket also includes a first shell and a first fixing assembly; the ash collecting bin is installed in the inner cavity of the first shell through the first fixing assembly.

[0011] As a further optimization scheme of the present utility model, the first fixing component includes a first support ring and a first limiting ring; the bottom surface of the ash collecting bin and the bottom surface of the inner cavity of the first shell are crimped through the first support ring; the side wall of the ash collecting bin and the side wall of the inner cavity of the first shell are connected through the first limiting ring.

[0012] As a further optimization solution of the present utility model, the water tank also includes a second shell and a second fixing assembly; the first water storage tank and the second water storage tank are both installed in the inner cavity of the second shell through the second fixing assembly.

[0013] As a further optimization scheme of the utility model, the second fixing assembly includes a second supporting ring and a second limiting ring; the bottom surface of the first water tank and the bottom surface of the inner cavity of the second shell are crimped by the second supporting ring, and the side wall of the first water tank and the side wall of the inner cavity of the second shell are connected by the second limiting ring; the bottom surface of the second water tank and the bottom surface of the inner cavity of the second shell are crimped by the second supporting ring, and the side wall of the second water tank and the side wall of the inner cavity of the second shell are connected by the second limiting ring.

[0014] As a further optimization solution of the present invention, the heat exchange component is a semiconductor heat exchanger.

[0015] As a further optimization solution of the present utility model, the semiconductor heat exchanger is connected to an external power supply.

[0016] In summary, the benefits of the utility model lie in: a waste heat recovery ash hopper of a dry coke quenching ground dust removal station, comprising a support assembly, a recovery hopper, a water tank and a water pump; the recovery hopper is installed in the support assembly, and the water tank is installed in the support assembly; the recovery hopper comprises an ash collecting bin and a first heat exchange tube arranged on the outer surface of the ash collecting bin, the first heat exchange tube is provided with a first opening, and the first heat exchange tube is provided with a second opening; the water tank comprises a first water storage tank, a second water storage tank and a heat exchange assembly; the first water storage tank is provided with a water inlet and a water outlet; the first opening is connected to the water inlet through a pipe, the water outlet is connected to the water pump, and the water pump is connected to the second opening; the side wall of the first water storage tank is connected to the side wall of the second water storage tank through the heat exchange assembly. The utility model has a simple structure and reliable function. The heat of the coke ash is transferred to the water bin by the first heat exchange tube and the first heat transfer fluid in the first water storage tank. Then, the heat of the first heat transfer fluid is transferred to the second heat transfer fluid for storage by the heat exchange component, thereby realizing the recovery of the heat of the coke ash. It is efficient, stable and has a small temperature difference requirement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application is further described below with reference to the accompanying drawings:

[0018] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the recovery bucket and water tank structure;

[0020] Figure 3 Schematic diagram of the location of the water inlet and outlet;

[0021] Figure 4 It is a schematic diagram of the recovery bucket structure;

[0022] Figure 5 This is a schematic diagram of the water tank structure;

[0023] Figure 6 is a schematic diagram of a cross-sectional top view of the structure of a first limiting ring;

[0024] Figure 7 It is a schematic diagram of the cross-sectional top view of the second limiting ring.

[0025] Description of reference numerals:

[0026] In the figure, 1. support assembly; 2. recovery hopper; 20. first shell; 201. first support ring; 202. first limit ring; 21. ash collection bin; 211. material port; 22. first heat exchange tube; 3. water tank; 30. second shell; 301. second support ring; 302. second limit ring; 31. first water storage tank; 311. water inlet; 312. water outlet; 313. first water outlet; 32. second water storage tank; 321. second water outlet; 33. heat exchange assembly; 4. water pump. DETAILED DESCRIPTION

[0027] Based on the above structural features of the present application, the implementation methods of the present application are further described:

[0028] Reference Figure 1 to Figure 7, this embodiment provides a waste heat recovery ash hopper of a dry coke quenching ground dust removal station, comprising a support assembly 1, a recovery hopper 2, a water tank 3 and a water pump 4; the recovery hopper 2 is installed in the support assembly 1, and the water tank 3 is installed in the support assembly 1. The support assembly 1 is used to support the recovery hopper 2 and the water tank 3, and keep the recovery hopper 2 and the water tank 3 in a vertical state. The recovery hopper 2 includes an ash collecting bin 21 and a first heat exchange tube 22 arranged on the outer surface of the ash collecting bin 21, and the first heat exchange tube 22 is arranged on the outer wall of the ash collecting bin 21 (for example, by welding or by bolts); the cross-section of the first heat exchange tube 22 is semicircular to increase the contact area between the first heat exchange tube 22 and the ash collecting bin 21, and further increase the heat conduction efficiency. The first heat exchange tube 22 is provided with a first opening, and the first heat exchange tube 22 is provided with a second opening; the water tank 3 includes a first water storage tank 31, a second water storage tank 32 and a heat exchange assembly 33; the first water storage tank 31 is provided with a water inlet 311 and a water outlet 312; the first opening is connected to the water inlet 311 through a pipeline, the water outlet 312 is connected to the water pump 4, and the water pump 4 is connected to the second opening; the side wall of the first water storage tank 31 is connected to the side wall of the second water storage tank 32 through the heat exchange assembly 33. The first heat transfer fluid is provided in the first water storage tank 31 and the first heat exchange tube 22, and the first heat transfer fluid is provided in the second water storage tank 32, and the second heat transfer fluid is provided in the second water storage tank 32. The liquid level of the first heat transfer fluid is higher than the first opening and the water inlet 311, so as to ensure that the first heat transfer fluid can circulate in the first water storage tank 31 and the first heat exchange tube 22, and further improve the functional reliability of the utility model.

[0029] Reference Figure 1 to Figure 3 The first heat exchange tube 22 is spirally shaped to increase the contact area between the first heat exchange tube 22 and the ash collecting bin 21, thereby further increasing the heat transfer efficiency.

[0030] Reference Figure 1 to Figure 3 , the first opening is arranged at the top of the first heat exchange tube 22; the second opening is arranged at the bottom of the first heat exchange tube 22. Since the density of hot water is less than that of cold water, the hot water is concentrated at the upper part of the first heat exchange tube 22, and the cold water is concentrated at the lower part of the first heat exchange tube 22; the hot water flows into the first water storage tank 31 through the water inlet 311 and finally conducts the heat to the second water storage tank 32, which can have a higher heat conduction efficiency; the coke ash is collected and enters the ash collecting bin 21, and then accumulates on the bottom wall of the ash collecting bin 21 and exchanges heat with the bottom wall, and the cold water flows into the first heat exchange tube 22 through the second opening and preferentially exchanges heat with the bottom wall of the ash collecting bin 21, so that the utility model has a higher heat conduction efficiency.

[0031] Reference Figure 4The recycling hopper 2 also includes a first shell 20 and a first fixing assembly; the ash bin 21 is installed in the inner cavity of the first shell 20 through the first fixing assembly. The first fixing assembly includes a first support ring 201 and a first limit ring 202; the bottom surface of the ash bin 21 is crimped with the bottom surface of the inner cavity of the first shell 20 through the first support ring 201; the side wall of the ash bin 21 is connected with the side wall of the inner cavity of the first shell 20 through the first limit ring 202.

[0032] Reference Figure 5 The water tank 3 also includes a second shell 30 and a second fixing assembly; the first water tank 31 and the second water tank 32 are both installed in the inner cavity of the second shell 30 through the second fixing assembly. The second fixing assembly includes a second support ring 301 and a second limiting ring 302; the bottom surface of the first water tank 31 is pressed against the bottom surface of the inner cavity of the second shell 30 through the second support ring 301, and the side wall of the first water tank 31 is connected to the side wall of the inner cavity of the second shell 30 through the second limiting ring 302; the bottom surface of the second water tank 32 is pressed against the bottom surface of the inner cavity of the second shell 30 through the second support ring 301, and the side wall of the second water tank 32 is connected to the side wall of the inner cavity of the second shell 30 through the second limiting ring 302.

[0033] Reference Figure 2 , Figure 4 and Figure 6 The cross section of the ash bin 21 is circular, the first support ring 201 is annular, and the first limit ring 202 is annular. The upper surface of the first support ring 201 is crimped with the ash bin 21, and the lower surface of the first support ring 201 is fixedly connected to the first shell 20 (for example, fixedly connected by bolts or fixedly connected by welding); the inner edge of the first limit ring 202 is sleeved with the ash bin 21, and the outer edge of the first limit ring 202 is fixedly connected to the first shell 20 (for example, fixedly connected by bolts or fixedly connected by welding); therefore, the ash bin 21 can be easily pulled out of the first shell 20, and then the ash bin 21 and the coke ash can be transported as a whole. An ash inlet is provided at the top of the ash bin 21.

[0034] Reference Figure 2 , Figure 5 and Figure 7The first water tank 31 has a semicircular cross section, the second water tank 32 has a semicircular cross section, the second support ring 301 has a θ shape, and the second stop ring 302 has a θ shape. The upper surface of the second support ring 301 is crimped with the first water tank 31 and the second water tank 32, and the lower surface of the second support ring 301 is fixedly connected to the second shell 30 (for example, by bolts or welding); the inner edge of the second stop ring 302 is fixedly connected to the first water tank 31 and the second water tank 32 (for example, by bolts or welding); the outer edge of the second stop ring 302 is fixedly connected to the second shell 30 (for example, by bolts or welding), so as to ensure the structural stability of the first water tank 31 and the second water tank 32.

[0035] The heat exchange component 33 is a semiconductor heat exchanger; the semiconductor heat exchanger is connected to an external power supply. The semiconductor heat exchanger is provided with a heat absorbing end and a heat releasing end. The heat absorbing end is placed in the first water storage tank 31 and immersed in the first heat transfer fluid, and the heat releasing end is placed in the second water storage tank 32 and immersed in the second heat transfer fluid. The semiconductor heat exchanger can transfer the heat of the first heat transfer fluid and the heat generated by its own resistance to the second heat transfer fluid, and finally realize the recovery of the heat of the coke ash. The semiconductor heat exchanger, for example, uses Bi2Te3-Sb2Te3 and Bi2Te3-Bi2Se3 semiconductor heat conducting sheets based on bismuth telluride, which is an existing technology in the industry, and the specific structure is not repeated.

[0036] A first insulation layer such as a sponge layer is filled between the second shell 30 and the first water tank 31 ; a second insulation layer such as a sponge layer is filled between the second shell 30 and the second water tank 32 to prevent heat loss of the second heat transfer fluid.

[0037] The support assembly 1 is a frame structure formed by square tubes and channel steels spliced ​​together by bolts and welding. It is a conventional existing technical solution in the industry and is not an innovative point of the present utility model, so it will not be described in detail.

[0038] A first water replenishment hole is opened on the top of the first water storage tank 31 , and a second water replenishment hole is opened on the top of the second water storage tank 32 .

[0039] A material port 211 is provided at the bottom of the ash collecting bin 21, and a first valve is installed at the position of the material port 211. The material port 211 is used to discharge the cooled coke ash (on the premise of avoiding the extraction of the ash collecting bin 21). A first water discharge port 313 is provided at the bottom of the first water storage tank 31 for periodic replacement of the first heat transfer fluid; a second water discharge port 321 is provided at the bottom of the water storage tank for periodic replacement of the second heat transfer fluid. A second valve is provided at the position of the first water discharge port 313, and a third valve is provided at the position of the second water discharge port 321.

[0040] The water pump 4 presses the first heat transfer fluid at the water outlet 312 into the first heat exchange tube 22 through the second opening; the first heat transfer fluid at the first opening flows into the first water storage tank 31 through the water inlet 311, thereby realizing circulation.

[0041] The utility model has a simple structure and reliable functions. The heat of the coke ash is transferred to the water tank 3 by using the first heat exchange tube 22 and the first heat transfer fluid in the first water storage tank 31. Then, the heat of the first heat transfer fluid is transferred to the second heat transfer fluid for storage by using the heat exchange component 33, thereby realizing the recovery of the heat of the coke ash. It is efficient, stable and has a small temperature difference requirement.

[0042] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] To sum up, for those skilled in the art, according to the guidance of the present invention, without departing from the principle and spirit of the present invention, the changes, modifications, replacements and deformations made to the present invention still fall within the protection scope of the present invention.

Claims

1. A waste heat recovery ash hopper for a dry coke quenching ground dust removal station, characterized in that: It comprises a support assembly (1), a recovery bucket (2), a water tank (3) and a water pump (4); the recovery bucket (2) is installed in the support assembly (1), and the water tank (3) is installed in the support assembly (1); The recovery hopper (2) comprises an ash collecting bin (21) and a first heat exchange tube (22) arranged on the outer surface of the ash collecting bin (21), the first heat exchange tube (22) being provided with a first opening, and the first heat exchange tube (22) being provided with a second opening; The water tank (3) comprises a first water storage tank (31), a second water storage tank (32) and a heat exchange component (33); the first water storage tank (31) is provided with a water inlet (311) and a water outlet (312); the first opening is connected to the water inlet (311) via a pipeline, the water outlet (312) is connected to the water pump (4), and the water pump (4) is connected to the second opening; The side wall of the first water storage tank (31) and the side wall of the second water storage tank (32) are connected via the heat exchange component (33).

2. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 1 is characterized by: The first heat exchange tube (22) is in a spiral shape.

3. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 2 is characterized by: The first opening is arranged at the top of the first heat exchange tube (22).

4. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 3 is characterized by: The second opening is arranged at the bottom of the first heat exchange tube (22).

5. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 4 is characterized by: The recovery hopper (2) further comprises a first shell (20) and a first fixing assembly; the ash collecting bin (21) is mounted in the inner cavity of the first shell (20) via the first fixing assembly.

6. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 5 is characterized by: The first fixing assembly comprises a first supporting ring (201) and a first limiting ring (202); the bottom surface of the ash collecting bin (21) and the bottom surface of the inner cavity of the first shell (20) are crimped via the first supporting ring (201); and the side wall of the ash collecting bin (21) and the side wall of the inner cavity of the first shell (20) are connected via the first limiting ring (202).

7. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 6 is characterized by: The water tank (3) further comprises a second shell (30) and a second fixing assembly; the first water storage tank (31) and the second water storage tank (32) are both installed in the inner cavity of the second shell (30) via the second fixing assembly.

8. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 7 is characterized by: The second fixing assembly comprises a second supporting ring (301) and a second limiting ring (302); the bottom surface of the first water storage tank (31) and the bottom surface of the inner cavity of the second shell (30) are crimped together via the second supporting ring (301), and the side wall of the first water storage tank (31) and the side wall of the inner cavity of the second shell (30) are connected via the second limiting ring (302); the bottom surface of the second water storage tank (32) and the bottom surface of the inner cavity of the second shell (30) are crimped together via the second supporting ring (301), and the side wall of the second water storage tank (32) and the side wall of the inner cavity of the second shell (30) are connected via the second limiting ring (302).

9. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to any one of claims 1 to 8, characterized in that: The heat exchange component (33) is a semiconductor heat exchanger.

10. The waste heat recovery ash hopper of the dry coke quenching ground dust removal station according to claim 9, characterized in that: The semiconductor heat exchanger is connected to an external power supply.

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