CDQ environmentally friendly coke drum

Abstract

The present invention provides a dry quenching environmentally friendly coke tank, comprising a tank body and a bottom gate. The tank body has a conical cylinder section, an outlet protection ring is provided on the inner side of the lower coke outlet of the conical cylinder section, and the outlet protection ring is provided with N coke powder outlets. The conical cylinder section has a conical bucket bottom plate, and the coke powder outlets and the conical bucket bottom plate constitute a coke unloading channel. The dry quenching environmentally friendly coke tank solves the problems of extrusion damage to the edge of the coke outlet caused by red coke hanging on the bottom gate, and the impact and coke wear caused by the nearly 4-meter height difference between the coke pusher and the coke tank, by providing an outlet protection ring at the coke outlet. The vulnerable parts of the coke tank are strengthened for protection, and the problems of alignment and sealing between the coke tank cover and the coke tank are solved. This detachable structural setting reduces the equipment cost required for frequent updates of the coke tank as a whole, and extends the service life of the coke tank.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical equipment manufacturing, in particular to a coke pot matched with a dry quenching coke oven. Background Art

[0002] The CDQ coke drum is a device used in conjunction with the CDQ coke oven to hold red coke. The drum is divided into three sections: a cylindrical section at the top, a conical section connected to the bottom, and the drum's bottom gate at the bottom. During operation, the red coke produced by the coke oven is pushed into the drum by a coke pusher. The drum is then transported to the top of the CDQ coke oven by an electric locomotive and hoist. While the electric locomotive is transporting and lifting the CDQ coke drum, the drum's bottom gate is closed. Once the CDQ coke drum is lifted to the top of the CDQ oven and placed on a loading device, the bottom gate automatically opens, and the red coke is discharged into the CDQ oven through the loading device. This process repeats continuously throughout the CDQ process.

[0003] Through research, it was found that since the temperature of the red coke discharged from the coke oven is as high as over 1000℃, although some coke drums have adopted heat-resistant cast steel or ductile iron hanging plates on the inside, there are gaps between the hanging plates on the inside of the coke drum, which can easily cause air to enter and cause oxidation loss of the red coke; especially if the coke drum is not properly maintained after a period of use, it is more likely to burn the heat-resistant cast steel lining, and cause the bottom gate to deform due to heat, resulting in a reduction in the service life of the coke drum; in addition, the cylindrical section and conical section of the coke drum are very prone to coke hanging, which seriously affects the volume inside the coke drum and increases the lifting weight of the coke drum. In more serious cases, the lifting equipment of the elevator cannot be started. At this time, manual cleaning of the coke hanging in the coke drum is required. Due to the high temperature and the continuous working performance of the coke drum, cleaning is very difficult. The discharge port of the cone section is easily damaged due to frequent erosion by red coke and the lining plate at the edge of the discharge port being crushed when the bottom gate is closed after coke is hung on the bottom gate, which seriously affects the service life. In particular, the lining plate made of castable material is very easy to be damaged.

[0004] In addition, the existing CDQ coke tank is prone to accumulation and spillage of red coke in the upper horn section, which can easily cause wear between the tank body and the coke tank cover over time, reducing the sealing performance of the entire CDQ coke tank.

[0005] Aiming at the shortcomings of existing technologies, in order to increase the service life of coke drums, reduce coke loss and recover as much coke sensible heat as possible, solve the problems of coke hanging and discharge port damage, and aim to increase the service life of coke drums and reduce the maintenance workload of coke drums, so as to maximize the energy conservation and emission reduction of the dry quenching system. Summary of the Invention

[0006] The present invention provides a dry quenching environmentally friendly coke tank, comprising a tank body and a bottom gate. The tank body has a conical cylinder section, an outlet protection ring is provided on the inner side of the coke outlet at the lower part of the conical cylinder section, and the outlet protection ring is provided with N coke powder outlets. The conical cylinder section has a conical hopper bottom plate, and the coke powder outlet and the conical hopper bottom plate form a coke unloading channel.

[0007] Furthermore, the technical solution adopted by the present invention to solve the above technical problems is: the coke powder outlet is a coke powder hole radially penetrating the outlet protection ring or a coke powder groove opened at the bottom of the outlet protection ring.

[0008] Furthermore, the technical solution adopted by the present invention to solve the above technical problems is: the cone bucket bottom plate is located below the outlet protection ring, and the outlet protection ring is fixed by the cone bucket bottom plate.

[0009] Specifically, the inner side surface of the outlet protection ring is an arc-shaped convex surface protruding toward the center of the outlet protection ring, and the outer side surface is an arc-shaped concave surface concave toward the center of the outlet protection ring.

[0010] Specifically, a positioning column is protruding from the lower part of the outlet protection ring, and a positioning hole is formed on the bottom plate of the cone bucket, and the positioning column is inserted into the corresponding positioning hole.

[0011] Furthermore, the technical solution adopted by the present invention to solve the above technical problems is: the tank body also includes an upper trumpet section and a cylindrical section, a lining is arranged on the inner side of the tank body, the upper trumpet section, the cylindrical section and the conical cylinder section are connected from top to bottom, the lining includes an upper trumpet lining, a straight section lining and a cone bucket lining, and a guide lining is arranged between the straight section lining and the cone bucket lining.

[0012] Specifically, the guide lining is arc-shaped.

[0013] Specifically, the straight line of the flow lining is connected between the straight section lining and the cone bucket lining, and is in an inverted cone shape.

[0014] Furthermore, the technical solution adopted by the present invention to solve the above technical problems is: the material of the lining plate is ultra-high strength wear-resistant castable, and an insulation layer is provided between the lining plate and the tank body.

[0015] Furthermore, the technical solution adopted by the present invention to solve the above technical problems is: an upper protective ring is provided on the top of the tank body, a sealing ring is provided above the upper protective ring, and the cross-section of the sealing ring along the vertical direction is triangular or arc-shaped.

[0016] Compared with the prior art, the dry quenching environmentally friendly coke tank of the present invention has the following outstanding advantages and beneficial effects: by arranging an outlet protection ring at the coke outlet, the extrusion damage to the edge of the coke outlet caused by red coke hanging on the bottom gate and the impact and coke wear on the coke outlet caused by the height difference of nearly 4 meters between the coke pusher and the coke tank are solved, and the vulnerable parts of the coke tank are strengthened. The detachable structural setting reduces the equipment cost required for frequent replacement of the coke tank as a whole and extends the service life of the coke tank; the inner side of the outlet protection ring is an arc-shaped convex surface and the outer side is an arc-shaped concave surface. After such a setting, the amount of coke hanging on the outlet protection ring is reduced, and the impact on the tank bottom (cone bucket liner) is reduced. The wear and extrusion of the edge of the outlet protection ring and the tank body are reduced, and at the same time, the expansion gap between the outlet protection ring and the tank body is ensured. Even if the expansion gap between the outlet protection ring and the tank body becomes smaller due to thermal expansion, this structural design can effectively reduce the wear (extrusion damage) caused by the residual coke powder between the outlet protection ring and the tank body; the coke powder enters through the expansion gap and is discharged from the coke powder outlet through the coke unloading channel, preventing the coke powder from staying in the expansion gap and squeezing the cone bucket liner or the outlet protection ring. This overcomes the defect that the coke powder enters the expansion gap after the thermal expansion and contraction of the protection ring and has no way to be discharged, reducing the extrusion damage caused by the coke powder to the protection ring and the refractory liner bad; at the same time, the arc-shaped liner between the straight section liner and the cone bucket liner increases the red coke retention angle to reduce the probability of coke hanging, greatly reduces the maintenance workload and increases the service life; the sealing ring is set in a triangular or circular shape and corresponds to the concave area at the bottom of the coke tank cover, which can prevent the red coke from spilling and staying, reduce the gap between the coke tank and the coke tank cover caused by the attached coke slag and affect the sealing effect, protect and strengthen the seal between the coke tank and the coke tank cover, and at the same time avoid the defects of poor sealing between the coke tank and the coke tank cover and the displacement of the coke tank cover in the prior art due to the inaccurate correspondence between the coke tank cover and the coke tank.

[0017] The present invention will be further described below in conjunction with the accompanying drawings: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a prior art tank;

[0019] Figure 2 It is the outline drawing of the metal liner tank body of the prior art;

[0020] Figure 3 It is a structural diagram of a metal liner tank body in the prior art;

[0021] Figure 4 It is a structural diagram of a prior art tank;

[0022] Figure 5 It is an outline drawing of the present invention;

[0023] Figure 6 is a cross-sectional view of the present invention;

[0024] Figure 7 It is a schematic diagram of the tank structure of the present invention;

[0025] Figure 8 yes Figure 7 A partial enlarged view of B in the middle;

[0026] Figure 9 yes Figure 7 A partial enlarged view of middle A;

[0027] Figure 10 This is a schematic diagram of the structure of the arc liner of the present invention;

[0028] Figure 11 This is a schematic diagram of the structure of the outlet protection ring of the present invention;

[0029] Figure 12 This is a schematic diagram of the structure of the cone section of the present invention;

[0030] Figure 13 yes Figure 6 Partial enlarged view of C in the middle. Description of reference numerals:

[0031] In the figure, 1. Tank, 2. Bottom gate, 3. Upper trumpet section, 4. Cylinder section, 5. Liner, 6. Insulation layer, 7. Cone section, 8. Coke outlet, 9. Outlet protection ring, 301. Upper protection ring, 302. Sealing ring, 10. Expansion joint, 11. Coke unloading channel, 501. Upper trumpet liner, 502. Straight section liner, 503. Curved liner, 504. Cone hopper liner, 505. Curved surface, 701. Cone hopper bottom plate, 702. Positioning hole, 703. Bottom plate inner ring, 901. Curved convex surface, 902. Curved concave surface, 903. Positioning column, 904. Coke powder outlet, 905. Lower edge of the protection ring DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] Refer to the instruction manual Figure 5-13 The preferred embodiment of the dry quenching environmentally friendly coke tank of the present invention is described in detail.

[0034] The dry quenching environmentally friendly coke tank described in the present invention includes a tank body 1 and a bottom gate 2. The tank body 1 is composed of an upper trumpet section 3, a cylindrical section 4, a conical section 7, and a lining plate 5. A coke outlet 8 is formed at the lower portion of the tank body 1. The lower portion of the conical section 7 has an annular cone hopper bottom plate 701 corresponding to the coke outlet 8. An outlet protection ring 9 is provided on the cone hopper bottom plate 701. The outlet protection ring 9 is provided with a plurality of coke powder outlets 904. The outlet protection ring 9, the coke powder outlets 904, and the cone hopper bottom plate 701 together constitute a coke unloading channel 11. Specifically, the inner side of the outlet protection ring 9 is an arc-shaped convex surface 901, and the outer side is an arc-shaped concave surface 902. The inner side surface of the outlet protection ring 9 is an arc-shaped convex surface 901 that bulges toward the center of the outlet protection ring 9, and the outer side surface is an arc-shaped concave surface 902 that is concave toward the center of the outlet protection ring 9. In this embodiment, an expansion joint 10 is formed between the outlet protection ring 9 and the tank body 1. In this embodiment, the coke powder outlet 904 is a plurality of coke powder troughs opened upward from the bottom of the outlet protection ring 9. The coke powder troughs are spaced apart along the outer circumference of the outlet protection ring 9. The expansion joint 10 is connected to the coke powder outlet 904 and the inner cavity of the tank body 1. Of course, in addition to the coke powder troughs as described above, the specific structure of the coke powder outlet 904 can also be set as coke powder holes passing through the radial direction of the outlet protection ring 9, and the coke powder holes can be symmetrically arranged or evenly spaced along the outer circumference of the outlet protection ring 9. The cone hopper bottom plate 701 can be a horizontal circular ring or a conical ring. The outlet protection ring 9 can be composed of a plurality of arc segments to form a circle. The inner ring 703 of the bottom plate of the cone bucket 701 at the coke outlet 8 at the lower part of the cone cylinder section 7 is smaller than the lower edge 905 of the protective ring. Since red coke is often hung on the bottom gate 2, the bottom gate 2 needs to be closed when the coke tank 1 has unloaded the red coke. The red coke hanging on the bottom gate 2 will squeeze the tank body 1. Since the edge of the cone bucket liner 504 is protected by the inner ring 703 of the bottom plate and the inner curved convex surface 901 of the outlet protective ring 9, it will not directly squeeze the edge of the cone bucket liner 504. At the same time, the coke powder remaining on the cone bucket liner 504 can easily enter the expansion joint 10. In order to solve the inconsistent expansion amount of the two different materials, a certain expansion joint 10 needs to be left. The coke powder is discharged from the coke powder hole 904 through the expansion joint 10 to prevent the coke powder from staying in the expansion joint and squeezing the cone bucket liner 504 or the outlet protective ring 9. By arranging an outlet protection ring 9 at the coke outlet 8, the extrusion damage to the edge of the coke outlet 8 caused by the red coke hanging on the bottom gate 2, and the impact and coke discharge wear on the coke outlet 8 caused by the height difference of nearly 4 meters between the coke pusher and the coke tank are solved, and the vulnerable positions of the coke tank are strengthened. This detachable structural setting reduces the equipment cost required for frequent updates of the coke tank as a whole, and extends the service life of the coke tank.The inner side of the outlet protection ring 9 is an arc-shaped convex surface, and the outer side is an arc-shaped concave surface, which not only reduces the amount of coke hanging on the outlet protection ring, but also reduces the wear and extrusion on the edge of the bottom of the tank body (cone bucket lining 504), while ensuring that the expansion gap 10 is formed between the outlet protection ring 9 and the tank body 1 without increasing the overall structural size. Even if the outlet protection ring 9 and the tank body 1 expand due to heat and cause the expansion gap to become smaller, this convex arc-shaped expansion gap 10 can effectively reduce the wear between the outlet protection ring and the tank body 1 caused by residual coke powder; coke powder enters through the expansion gap 10 and is discharged from the coke powder outlet 904 through the coke unloading channel 11, preventing coke powder from staying in the expansion gap 10 and squeezing the cone bucket lining or the outlet protection ring 9, overcoming the defect that coke powder enters the expansion gap after the thermal expansion and contraction of the outlet protection ring 9 and the tank body 1 and has no way to be discharged, reducing the extrusion damage of the outlet protection ring 9 and the lining caused by coke powder.

[0035] In specific implementation, the outlet protection ring 9 and the cone bucket bottom plate 701 can be connected by plugging, snapping, etc., or by welding. In this embodiment, a positioning post 903 is provided on the lower part of the outlet protection ring 9, and a positioning hole 702 is formed in the cone bucket bottom plate 701. The positioning post 903 is inserted into the corresponding positioning hole 702. After a tight fit, the connection strength between the two can be further strengthened by welding. The positioning hole 702 is provided on the inner ring 703 of the bottom plate. The positioning hole 702 corresponds to the positioning post 903 on the outlet protection ring 9, which increases the reliability of the welding between the protection ring 9 and the cone bucket bottom plate 701.

[0036] like Figure 5 、 6As shown in Figures 9 and 11, the liner 5 is composed of an upper trumpet liner 501, a straight liner 502, and a cone liner 504. A guide liner 503 is provided between the straight liner 502 and the cone liner 504 to prevent slag accumulation. In this embodiment, the guide liner 503 is arc-shaped, which facilitates the coke flow and reduces the chance of coke hanging. In other words, the inner side surface of the guide liner 503 is an arc-shaped surface 505, which facilitates the downward flow of red coke. However, this is not a limitation. The guide liner 503 can also be connected between the straight liner 502 and the cone liner 504 in an inclined straight line. In this case, the guide liner 503 is in the shape of an inverted cone. Such a configuration is also within the scope of protection of this application. The N guide linings 503 here form an inverted cone with a larger top and smaller bottom, which also facilitates the flow of red coke off the line. The curved surface 505 of the guide lining 503 increases the angle of the lower red coke while smoothly transitioning the existing angle, reducing the chance of red coke getting stuck on the cone hopper lining 504 on the cone section 7. In the prior art, all coke tanks 1 are directly assembled between the cylindrical section 4 and the cone section 7 by using straight linings 502 and cone hopper linings 504. In other words, there is no guide lining 503 as described in this application between the cylindrical section 4 and the cone section 7. This has the disadvantage of creating a relatively large lateral gap after assembly, which is very likely to cause coke to get stuck.

[0037] like Figure 5 As shown, the top of the tank body 1 is provided with an upper protective ring 301, and a sealing ring 302 is provided above the upper protective ring 301. The vertical cross-section of the sealing ring 302 is triangular or arc-shaped. In this embodiment, the protective ring 301 is provided on the upper horn section 3. The arc-shaped shape means that the sealing ring 302 can be semicircular, slightly semicircular, semi-elliptical, etc. However, the shape of the sealing ring 302 is not limited to this. As long as it can prevent the red coke from spilling and remaining on the upper protective ring 301, and has sealing and alignment functions, it is within the scope of the disclosure of the present invention. In actual implementation, the upper protective ring 301 and the sealing ring 302 correspond to the recessed area at the bottom of the coke tank cover. This can prevent the red coke from spilling and remaining on the upper protective ring 301, thereby reducing the possibility of the coke tank cover and the coke tank cover being loose due to the adhesion of coke residue between the coke tank and the coke tank cover. At the same time, it avoids the defect of poor sealing inside the tank body caused by the misalignment of the coke tank cover and the coke tank in the prior art.

[0038] like Figure 5 、 6 As shown in Figures 7 and 8, the material of the lining plate 5 is ultra-high strength wear-resistant castable, specifically, it can be a casting material or a steel material. An insulating layer 6 is provided between the lining plate 5 and the tank body 1. The setting of the insulating layer 6 makes the temperature of the red coke in the coke tank 1 transferred to the outer shell of the tank body 1 lower, thereby improving the safety of use.

[0039] like Figure 5 、 6 As shown in FIG. 8 , the upper horn section 3 is provided with an upper protective ring 301 , which solves the problem of strength of the upper horn section 3 and protects the upper horn lining plate 501 from being squeezed and impacted by the weight of the coke tank cover.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dry quenching environmentally friendly coke tank, comprising a tank body (1) and a bottom gate (2), wherein the tank body (1) has a conical cylinder section (7), characterized in that: An outlet protection ring (9) is provided on the inner side of the coke outlet (8) at the lower part of the cone cylinder section (7), and the outlet protection ring (9) is provided with N coke powder outlets (904). The cone cylinder section (7) has a cone hopper bottom plate (701), and the cone hopper bottom plate (701) is located below the outlet protection ring (9). The outlet protection ring (9) is fixed by the cone hopper bottom plate (701). The coke powder outlet (904) and the cone hopper bottom plate (701) form a coke unloading channel (11). The inner side surface of the outlet protection ring (9) is an arc-shaped convex surface (901) convex toward the center of the outlet protection ring (9), and the outer side surface is an arc-shaped concave surface (901) concave toward the center of the outlet protection ring. 2), an expansion joint (10) is formed between the outlet protection ring (9) and the tank body (1), and the expansion joint (10) is communicated with the coke powder outlet (904) and the inner cavity of the tank body (1). The tank body (1) also includes an upper trumpet section (3) and a cylindrical section (4). A lining plate (5) is provided inside the tank body. The upper trumpet section (3), the cylindrical section (4), and the conical cylinder section (7) are connected from top to bottom. The lining plate (5) includes an upper trumpet lining plate (501), a straight section lining plate (502), and a cone bucket lining plate (504). A guide lining plate (503) is provided between the straight section lining plate (502) and the cone bucket lining plate (504), and the guide lining plate (503) is arc-shaped.

2. The environmentally friendly dry quenching coke tank according to claim 1, characterized in that: The coke powder outlet (904) is a coke powder hole radially penetrating the outlet protection ring (9) or a coke powder groove opened at the bottom of the outlet protection ring (9).

3. The environmentally friendly dry quenching coke tank according to claim 1, characterized in that: A positioning column (903) is protruded from the lower portion of the outlet protection ring, and a positioning hole (702) is formed on the cone bottom plate (701), and the positioning column (903) is inserted into the corresponding positioning hole (702).

4. The environmentally friendly dry quenching coke tank according to claim 1, characterized in that: The guide lining plate (503) is connected between the straight section lining plate (502) and the cone bucket lining plate (504) in an inclined straight line shape and is in an inverted cone shape.

5. The environmentally friendly dry quenching coke tank according to claim 1, characterized in that: The material of the lining plate (5) is an ultra-high strength wear-resistant castable material, and a heat insulation layer (6) is provided between the lining plate (5) and the tank body (1).

6. The environmentally friendly dry quenching coke tank according to claim 1 or 2, characterized in that: An upper protective ring (301) is provided on the top of the tank body (1), a sealing ring (302) is provided on the protective ring (301), and the cross section of the sealing ring (302) is triangular or arc-shaped.

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