Tail gas collecting and discharging device during decoking of coke tower

Abstract

The utility model relates to the technical field of coke tower cleaning, in particular to a coke tower decoking tail gas collecting and discharging device which comprises a collecting box, a gas inlet pipe and a gas outlet pipe which are communicated and fixed on the collecting box, a first control valve and a second control valve which are respectively fixed on the gas inlet pipe and the gas outlet pipe, and a gas discharging mechanism which is fixed on the collecting box. When the collecting device is used, the collecting cover is in butt joint with a flange at the top opening of the coking tower, so that tail gas in the coking tower during decoking is discharged into the collecting box under the action of the pipeline fan, transitions in the collecting box, then is discharged into a washing tower to be treated, and finally is discharged. The internal tail gas during decoking of the coke tower can be intensively collected, treated and discharged, and the situation that the internal tail gas during decoking of the coke tower pollutes the environment can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coking tower cleaning, in particular to a tail gas collection and emission device during decoking of a coking tower. Background Art

[0002] When the needle coke coking tower is decoking, the top and bottom covers of the coking tower are opened, the coke cutter enters through the top cover, and the cut needle coke coke and coke cutting water enter the open coke pool through the bottom cover. The coke in the coke pool is dehydrated by standing and then loaded by a bridge (or gantry) crane and sent to the downstream device by a belt conveyor. When the coking tower is decoking, the organic gas in the coking tower will overflow through the top cover, and the existing coking tower does not have a collection mechanism for the organic gas, which is randomly diffused into the environment, causing environmental pollution. Therefore, a tail gas collection and emission device for decoking the coking tower is needed to meet the demand. Utility Model Content

[0003] The utility model aims to solve the defect in the prior art that tail gas cannot be collected and discharged when the coking tower is decoking, and proposes a device for collecting and discharging tail gas when the coking tower is decoking.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for collecting and discharging tail gas during decoking of a coking tower is designed, comprising a collecting box, an air inlet pipe and an air outlet pipe connected and fixed on the collecting box, a first control valve and a second control valve being fixed on the air inlet pipe and the air outlet pipe respectively, and an exhaust mechanism being fixed on the collecting box.

[0006] Preferably, the exhaust mechanism includes a sealing plate, which is inserted into the collecting box, and a plurality of limiting rods are evenly fixed on the sealing plate, and the plurality of limiting rods are slidably arranged through the top wall of the collecting box, and a pressing assembly is provided on the collecting box.

[0007] Preferably, the pressing assembly comprises a linear motor, the linear motor is fixed on the outer side wall of the collecting box, a connecting rod is fixed on the slider of the linear motor, and the connecting rod slides through the top wall of the collecting box.

[0008] Preferably, a hose is fixed on the air inlet pipe, a second conduit is fixed on the hose, and a duct fan and a connecting mechanism are fixed on the second conduit.

[0009] Preferably, the connection mechanism comprises a rotary joint, the rotary joint is fixed on the second conduit, the first conduit is fixed on the rotary joint, and the collection cover is fixed on the first conduit.

[0010] Preferably, a reinforcement ring is fixed on the second conduit between the duct fan and the rotary joint, and a reinforcement rod is fixed on the reinforcement ring.

[0011] The utility model provides a device for collecting and discharging tail gas during decoking of a coking tower, and the beneficial effect is that when the device for collecting and discharging tail gas during decoking of a coking tower is in use, a collecting cover is connected to a flange at the top of the coking tower, and the tail gas inside the coking tower during decoking is discharged into a collecting box under the action of a pipeline fan, and then the tail gas is processed in a washing tower before being discharged. The tail gas inside the coking tower during decoking can be collected, processed and discharged in a centralized manner, and the environmental pollution caused by the tail gas inside the coking tower during decoking can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of a tail gas collection and discharge device for decoking a coking tower proposed by the utility model;

[0013] Figure 2 This is a right view of a tail gas collection and discharge device for decoking a coking tower proposed by the utility model;

[0014] Figure 3 This is a left view of a tail gas collection and discharge device for decoking a coking tower proposed by the utility model;

[0015] Figure 4 The utility model provides a top view of a device for collecting and discharging tail gas during decoking of a coking tower.

[0016] In the figure: 1. collecting hood; 2. first duct; 3. rotating joint; 4. second duct; 5. duct fan; 6. reinforcement ring; 7. reinforcement rod; 8. hose; 9. air inlet pipe; 10. first control valve; 11. collecting box; 12. air outlet pipe; 13. sealing plate; 14. limiting rod; 15. connecting rod; 16. linear motor; 17. second control valve. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Example 1

[0019] Reference Figure 1-4A device for collecting and discharging tail gas during decoking of a coking tower comprises a collecting box 11, an air inlet pipe 9 and an air outlet pipe 12 are connected and fixed on the collecting box 11, a first control valve 10 and a second control valve 17 are fixed on the air inlet pipe 9 and the air outlet pipe 12 respectively, the air inlet pipe 9 guides the tail gas inside the coking tower during decoking to the collecting box 11, an exhaust mechanism is fixed on the collecting box 11, the tail gas inside the coking tower during decoking is collected in the collecting box 11, and then discharged to a washing tower through the air outlet pipe 12, the tail gas inside the coking tower during decoking is treated inside the washing tower and then discharged to the environment, so as to ensure that the environment will not be polluted.

[0020] The exhaust mechanism includes a sealing plate 13, which is inserted into the collecting box 11. A plurality of limit rods 14 are evenly distributed and fixed on the sealing plate 13. The plurality of limit rods 14 are slidably arranged to penetrate the top wall of the collecting box 11. A downward pressure component is provided on the collecting box 11. With the assistance of the downward pressure component, the exhaust gas inside the coking tower collected in the collecting box 11 is discharged through the outlet pipe 12 when decoking.

[0021] The downward pressing assembly includes a linear motor 16, which is fixed on the outer wall of the collecting box 11. A connecting rod 15 is fixed on the slider of the linear motor 16. The connecting rod 15 slides through the top wall of the collecting box 11. The linear motor 16 drives the sealing plate 13 to move downward in the collecting box 11 through the connecting rod 15, thereby squeezing out the exhaust gas collected in the collecting box 11 when the coking tower is decoked.

[0022] Working principle: When in use, the air inlet pipe 9 is fixed on the top of the coking tower. When the coking tower is decoking, the internal exhaust gas is discharged into the collecting box 11. Under the action of the exhaust gas pressure, the sealing plate 13 moves up with multiple limit rods 14. When the coking tower is decoking, the internal exhaust gas is collected in the collecting box 11. When it needs to be discharged, the second control valve 17 is opened, and the exhaust gas is discharged into the washing tower through the exhaust pipe 12. The exhaust gas is treated in the washing tower and finally discharged. The internal exhaust gas of the coking tower during decoking can be collected, treated and discharged in a centralized manner, which can effectively prevent the internal exhaust gas from polluting the environment during decoking.

[0023] Example 2

[0024] Based on Example 1, Figure 1-4As another preferred embodiment of the utility model, the difference from embodiment 1 is that a hose 8 is fixed on the air inlet pipe 9, a second conduit 4 is fixed on the hose 8, a duct fan 5 and a connecting mechanism are fixed on the second conduit 4, and the second conduit 4 is detachably connected to the top of the coking tower by the connecting mechanism. The connecting mechanism includes a rotary joint 3, the rotary joint 3 is fixed on the second conduit 4, a first conduit 2 is fixed on the rotary joint 3, a collecting hood 1 is fixed on the first conduit 2, the collecting hood 1 and the top of the coking tower are flange-connected, a reinforcement ring 6 is fixed on the second conduit 4 between the duct fan 5 and the rotary joint 3, a reinforcement rod 7 is fixed on the reinforcement ring 6, and the arrangement of the reinforcement ring 6 and the reinforcement rod 7 facilitates the staff to fix the position of the second conduit 4 and turn the adjusting collecting hood 1, so that the collecting hood 1 can be quickly flange-connected to the top of the coking tower.

[0025] Working principle: When in use, due to the setting of the hose 8, the position of the second conduit 4 is easy to adjust. On the premise that the collecting box 11 does not move, the collecting cover 1 can be moved to the top of the coking tower. With the assistance of the reinforcement ring 6 and the reinforcement rod 7, when the collecting cover 1 is rotated, the second conduit 4 does not rotate together, which is convenient for adjusting the position of the collecting cover 1 and allows the collecting cover 1 to be more quickly flange-connected to the top of the coking tower. Under the action of the duct fan 5, the internal exhaust gas of the coking tower is discharged into the air inlet pipe 9 through the collecting cover 1, the first conduit 2, the second conduit 4 and the hose 8 during decoking, and finally discharged into the collecting box 11 through the air inlet pipe 9. Since the collecting cover 1 is easy to disassemble on the top of the coking tower, it will not affect the entry of the decoking device into the coking tower, nor will it affect the subsequent normal use of the coking tower.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for collecting and discharging tail gas during decoking of a coking tower, comprising a collecting box (11), characterized in that: The invention comprises an air inlet pipe (9) and an air outlet pipe (12) connected and fixed on a collection box (11), a first control valve (10) and a second control valve (17) being fixed on the air inlet pipe (9) and the air outlet pipe (12) respectively, an exhaust mechanism being fixed on the collection box (11), the exhaust mechanism comprising a sealing plate (13), the sealing plate (13) being inserted into the collection box (11), a plurality of limit rods (14) being evenly distributed and fixed on the sealing plate (13), the plurality of limit rods (14) being slidably arranged to penetrate the top wall of the collection box (11), and a pressing assembly being provided on the collection box (11).

2. The tail gas collection and emission device during decoking of a coking tower according to claim 1, characterized in that: The pressing assembly comprises a linear motor (16), the linear motor (16) is fixed on the outer wall of the collection box (11), a connecting rod (15) is fixed on the slider of the linear motor (16), and the connecting rod (15) is slidably arranged to penetrate the top wall of the collection box (11).

3. The tail gas collection and emission device during decoking of a coking tower according to claim 1, characterized in that: A hose (8) is fixed on the air inlet pipe (9), a second conduit (4) is fixed on the hose (8), and a duct fan (5) and a connecting mechanism are fixed on the second conduit (4).

4. The device for collecting and discharging tail gas during decoking of a coking tower according to claim 3, characterized in that: The connection mechanism comprises a rotating joint (3), the rotating joint (3) is fixed on the second conduit (4), the first conduit (2) is fixed on the rotating joint (3), and the collection cover (1) is fixed on the first conduit (2).

5. The device for collecting and discharging tail gas during decoking of a coking tower according to claim 4, characterized in that: A reinforcement ring (6) is fixed on the second conduit (4) between the duct fan (5) and the rotary joint (3), and a reinforcement rod (7) is fixed on the reinforcement ring (6).

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