Petroleum coke waste heat boiler with denitration device

Abstract

The utility model provides a petroleum coke waste heat boiler with a denitration device, which relates to the technical field of boilers, and comprises a bottom plate and a boiler body, one side of the boiler body is fixedly provided with a flue gas inlet pipe, the top of the boiler body is fixedly provided with a flue gas outlet pipe, and the top of the bottom plate is fixedly provided with an ammonia gas storage tank. High-temperature flue gas is conveyed into the furnace body from the flue gas inlet pipe, then the electromagnetic valve is opened, ammonia gas is conveyed into the ammonia gas storage tank from the ammonia gas inlet pipe after the electromagnetic valve is opened, the electromagnetic valve is closed after a certain amount of flue gas is conveyed, and the sucking pump is started after the electromagnetic valve is closed. When the air extracting pump works, ammonia gas in the ammonia gas storage tank is conveyed into the second connecting pipe from the first connecting pipe, the conveyed ammonia gas enters the furnace body from the second connecting pipe, the ammonia gas reacts with NOx in high-temperature flue gas in the furnace body after entering the furnace body, nitrogen and water are generated, and then the denitration process is completed. The serious influence on the air quality caused by high-temperature flue gas emission without denitration is effectively prevented, and the air quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a petroleum coke waste heat boiler with a denitration device. Background Art

[0002] Petroleum coke calcination is an extended processing of petrochemical by-products. The high-temperature flue gas generated by calcining petroleum coke in the calcination kiln is cooled by a rotary cooler and then discharged. The temperature of the flue gas discharged by the rotary cooler is still very high at around 1000°C, and it contains a large amount of volatile substances and granular coke powder. In order to fully utilize the heat of the flue gas, a petroleum coke waste heat boiler is required. At present, traditional petroleum coke waste heat boilers do not have a denitrification structure for high-temperature flue gas, which results in a large amount of nitrogen oxides in the high-temperature flue gas. After emission, it will have a serious impact on air quality, so improvement is needed. Utility Model Content

[0003] The purpose of the utility model is to solve the problem in the prior art that high-temperature flue gas contains a large amount of nitrogen oxides and has a serious impact on air quality after discharge, and to propose a petroleum coke waste heat boiler with a denitrification device.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a petroleum coke waste heat boiler with a denitrification device, comprising a base plate and a furnace body, a flue gas inlet pipe fixedly installed on one side of the furnace body, a flue gas outlet pipe fixedly installed on the top of the furnace body, an ammonia storage tank fixedly installed on the top of the ammonia storage tank, an ammonia inlet pipe fixedly installed on the outer wall of the ammonia inlet pipe, a mounting plate fixedly installed on the top of the base plate, an exhaust pump fixedly installed inside the mounting plate, a connecting pipe 1 fixedly installed on the input end of the exhaust pump, and a connecting pipe 2 fixedly installed on the output end of the exhaust pump.

[0005] Preferably, the end of the second connecting pipe away from the vacuum pump is fixedly connected to the furnace body, and the end of the first connecting pipe away from the vacuum pump is fixedly connected to the ammonia storage tank.

[0006] Preferably, the flue gas outlet pipe and the furnace body are communicated with each other, the flue gas inlet pipe and the furnace body are communicated with each other, and the ammonia inlet pipe and the ammonia storage tank are communicated with each other.

[0007] Preferably, the furnace body is located on top of the bottom plate, and the bottom plate and the furnace body are fixedly connected.

[0008] Preferably, a slot is provided on one side of the furnace body, a filter screen is slidably connected to the inside of the slot, a connecting plate is fixedly installed on the side of the filter screen away from the slot, and limiting holes are symmetrically provided on the bottom of the connecting plate. A frame is fixedly installed on the side of the furnace body close to the connecting plate, a driving motor is fixedly installed on the bottom end of the frame, a screw is fixedly installed on the output end of the driving motor, a slide is threadedly connected to the outer wall of the screw, and limiting columns are symmetrically fixedly installed on the top of the slide.

[0009] Preferably, the limiting plug post is slidably connected to the limiting plug hole, and the slide plate is slidably connected to the frame.

[0010] Preferably, a sealing strip is fixedly installed on one side of the connecting plate close to the furnace body, and a sealing groove is provided on one side of the furnace body close to the connecting plate, and the sealing groove is slidably connected to the sealing strip.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. In the utility model, high-temperature flue gas is transported into the furnace body from the flue gas inlet pipe, and the solenoid valve is opened after the transport. After opening, ammonia is transported from the ammonia inlet pipe into the ammonia storage tank. After a certain amount of transport is completed, the solenoid valve is closed. After closing, the vacuum pump is started. When the vacuum pump is working, the ammonia in the ammonia storage tank will be transported from the connecting pipe 1 to the connecting pipe 2. The transported ammonia will enter the furnace body from the connecting pipe 2. After entering, the ammonia will react with the NOx in the high-temperature flue gas in the furnace body to generate nitrogen and water, thereby completing the denitrification process, effectively preventing the high-temperature flue gas from being discharged without denitrification and causing serious impact on the air quality, thereby improving the air quality.

[0013] 2. In the utility model, the filtering effect of the high-temperature flue gas after the reaction is improved by the filter screen plate, and the discharge of particulate matter is effectively prevented. At the same time, when the filter screen plate is blocked and needs to be disassembled for cleaning, the driving motor is first started. When the driving motor is working, it drives the screw rod to rotate. During the rotation process, the screw rod drives the slide plate to slide downward inside the frame. During the downward sliding process, the slide plate drives the two sets of limit plugs to move downward together. After moving a certain distance, the two sets of limit plugs will move away from the two sets of limit plug holes. After moving away, the connecting plate is pulled to drive the filter screen plate to slide inside the slot through the connecting plate. After sliding a certain distance, the blocked filter screen plate can be taken out for cleaning, thereby improving the operating efficiency and maintenance convenience of the equipment and facilitating the operation of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model proposes a schematic diagram of the overall structure of a petroleum coke waste heat boiler with a denitrification device;

[0015] Figure 2The utility model provides a cross-sectional structural diagram of a petroleum coke waste heat boiler with a denitrification device;

[0016] Figure 3 This is a schematic diagram of the upward explosion structure of a petroleum coke waste heat boiler with a denitrification device proposed in the utility model;

[0017] Figure 4 This utility model proposes a petroleum coke waste heat boiler with a denitrification device Figure 3 Enlarged view of point A in the middle;

[0018] Figure 5 This utility model proposes a petroleum coke waste heat boiler with a denitrification device Figure 3 Enlarged view of point B in the middle.

[0019] Legend: 1. Bottom plate; 2. Furnace body; 3. Flue gas inlet pipe; 4. Flue gas outlet pipe; 5. Ammonia storage tank; 6. Ammonia inlet pipe; 7. Solenoid valve; 8. Mounting plate; 9. Vacuum pump; 10. Connecting pipe 1; 11. Connecting pipe 2; 12. Slot; 13. Filter plate; 14. Connecting plate; 15. Limiting jack; 16. Frame; 17. Drive motor; 18. Screw; 19. Slide plate; 20. Limiting column; 21. Sealing groove; 22. Sealing strip. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: Figure 1-Figure 2As shown, the utility model provides a technical solution: a petroleum coke waste heat boiler with a denitrification device, comprising a bottom plate 1 and a furnace body 2, a flue gas inlet pipe 3 is fixedly installed on one side of the furnace body 2, a flue gas outlet pipe 4 is fixedly installed on the top of the furnace body 2, an ammonia storage tank 5 is fixedly installed on the top of the ammonia storage tank 5, an ammonia inlet pipe 6 is fixedly installed on the top of the ammonia storage tank 5, an electromagnetic valve 7 is fixedly installed on the outer wall of the ammonia inlet pipe 6, a mounting plate 8 is fixedly installed on the top of the bottom plate 1, and an exhaust pump 9 is fixedly installed inside the mounting plate 8. A connecting pipe 10 is fixedly installed at the input end of the pump 9, and a connecting pipe 2 11 is fixedly installed at the output end of the vacuum pump 9. The end of the connecting pipe 2 11 away from the vacuum pump 9 is fixedly connected to the furnace body 2, and the end of the connecting pipe 10 away from the vacuum pump 9 is fixedly connected to the ammonia storage tank 5. The flue gas outlet pipe 4 and the furnace body 2 are interconnected, the flue gas inlet pipe 3 and the furnace body 2 are interconnected, and the ammonia inlet pipe 6 and the ammonia storage tank 5 are interconnected. The furnace body 2 is located on the top of the bottom plate 1, and the bottom plate 1 and the furnace body 2 are fixedly connected.

[0023] In this embodiment, high-temperature flue gas is transported into the furnace body 2 from the flue gas inlet pipe 3, and the solenoid valve 7 is opened after the transport. After opening, ammonia is transported from the ammonia inlet pipe 6 into the ammonia storage tank 5, and the solenoid valve 7 is closed after a certain amount of transport is delivered. After closing, the vacuum pump 9 is started. When the vacuum pump 9 is working, the ammonia in the ammonia storage tank 5 will be transported from the connecting pipe 1 10 to the connecting pipe 2 11. The transported ammonia will enter the furnace body 2 from the connecting pipe 2 11. After entering, the ammonia will react with the NOx in the high-temperature flue gas in the furnace body 2 to generate nitrogen and water, thereby completing the denitrification process, effectively preventing the high-temperature flue gas from being discharged without denitrification and causing serious impact on the air quality, thereby improving the air quality.

[0024] Example 2: Figure 3-Figure 5 As shown, a slot 12 is provided on one side of the furnace body 2, and a filter screen plate 13 is slidably connected to the inside of the slot 12. A connecting plate 14 is fixedly installed on the side of the filter screen plate 13 away from the slot 12, and a limiting socket 15 is symmetrically provided at the bottom of the connecting plate 14. A frame 16 is fixedly installed on the side of the furnace body 2 close to the connecting plate 14, and a driving motor 17 is fixedly installed on the bottom end of the frame 16. A screw rod 18 is fixedly installed on the output end of the driving motor 17, and a slide plate 19 is threadedly connected to the outer wall of the screw rod 18. A limiting plug 20 is symmetrically fixed on the top of the slide plate 19, and the limiting plug 20 is slidably connected to the limiting socket 15, and the slide plate 19 is slidably connected to the frame 16. A sealing strip 22 is fixedly installed on the side of the connecting plate 14 close to the furnace body 2, and a sealing groove 21 is provided on the side of the furnace body 2 close to the connecting plate 14, and the sealing groove 21 is slidably connected to the sealing strip 22.

[0025] In this embodiment, the filtering effect of the high-temperature flue gas after the reaction is improved by the filter plate 13, and the discharge of particulate matter is effectively prevented. At the same time, when the filter plate 13 is blocked and needs to be disassembled for cleaning, the drive motor 17 is first started. When the drive motor 17 is working, it will drive the screw rod 18 to rotate. During the rotation, the screw rod 18 will drive the slide plate 19 to slide downward inside the frame 16. During the downward sliding process, the slide plate 19 will drive the two groups of limit pins 20 to move downward together. After moving a certain distance, the two groups of limit pins 20 will move away from the two groups of limit holes 15. After moving away, the connecting plate 14 is pulled, and the filter plate 13 is driven by the connecting plate 14 to slide inside the slot 12. After sliding a certain distance, the blocked filter plate 13 can be taken out for cleaning, thereby improving the operating efficiency and maintenance convenience of the equipment and facilitating the operation of the operator.

[0026] The working principle of this embodiment is as follows: when in use, the high-temperature flue gas is first transported into the furnace body 2 from the flue gas inlet pipe 3, and then the solenoid valve 7 is opened. After opening, ammonia is transported from the ammonia inlet pipe 6 into the ammonia storage tank 5. After transporting a certain amount, the solenoid valve 7 is closed. After closing, the vacuum pump 9 is started. When the vacuum pump 9 is working, the ammonia in the ammonia storage tank 5 will be transported from the connecting pipe 1 10 to the connecting pipe 2 11. The transported ammonia will enter the furnace body 2 from the connecting pipe 2 11. After entering, the ammonia will react with the NOx in the high-temperature flue gas in the furnace body 2 to generate nitrogen and water, thereby completing the denitrification process. At the same time, the flue gas after the reaction will be filtered through the filter plate 13, and the filtered flue gas will be discharged from the flue gas outlet pipe 4. When the filter screen 13 is clogged and needs to be disassembled and cleaned, the drive motor 17 is first started. When the drive motor 17 is working, it will drive the screw rod 18 to rotate. During the rotation, the screw rod 18 will drive the slide plate 19 to slide downward inside the frame 16. During the downward sliding process of the slide plate 19, it will drive the two groups of limit plugs 20 to move downward together. After moving a certain distance, the two groups of limit plugs 20 will move away from the two groups of limit holes 15. After moving away, the connecting plate 14 will be pulled again, and the filter screen 13 will be driven to slide inside the slot 12 through the connecting plate 14. After sliding a certain distance, the clogged filter screen 13 can be taken out for cleaning, thereby improving the operating efficiency and maintenance convenience of the equipment and facilitating the operation of the operator.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A petroleum coke waste heat boiler with a denitrification device, comprising a bottom plate (1) and a furnace body (2), characterized in that: A flue gas inlet pipe (3) is fixedly mounted on one side of the furnace body (2), a flue gas outlet pipe (4) is fixedly mounted on the top of the furnace body (2), an ammonia storage tank (5) is fixedly mounted on the top of the ammonia storage tank (5), an ammonia inlet pipe (6) is fixedly mounted on the top of the ammonia storage tank (5), an electromagnetic valve (7) is fixedly mounted on the outer wall of the ammonia inlet pipe (6), a mounting plate (8) is fixedly mounted on the top of the bottom plate (1), an air pump (9) is fixedly mounted inside the mounting plate (8), a connecting pipe 1 (10) is fixedly mounted on the input end of the air pump (9), and a connecting pipe 2 (11) is fixedly mounted on the output end of the air pump (9).

2. The petroleum coke waste heat boiler with a denitrification device according to claim 1, characterized in that: The end of the second connecting pipe (11) away from the vacuum pump (9) is fixedly connected to the furnace body (2), and the end of the first connecting pipe (10) away from the vacuum pump (9) is fixedly connected to the ammonia storage tank (5).

3. The petroleum coke waste heat boiler with a denitrification device according to claim 1, characterized in that: The flue gas outlet pipe (4) and the furnace body (2) are in communication with each other, the flue gas inlet pipe (3) and the furnace body (2) are in communication with each other, and the ammonia inlet pipe (6) and the ammonia storage tank (5) are in communication with each other.

4. The petroleum coke waste heat boiler with a denitrification device according to claim 1, characterized in that: The furnace body (2) is located on the top of the bottom plate (1), and the bottom plate (1) and the furnace body (2) are fixedly connected.

5. The petroleum coke waste heat boiler with a denitrification device according to claim 1, characterized in that: A slot (12) is provided on one side of the furnace body (2), a filter screen plate (13) is slidably connected to the interior of the slot (12), a connecting plate (14) is fixedly installed on the side of the filter screen plate (13) away from the slot (12), and a limit plug hole (15) is symmetrically provided on the bottom of the connecting plate (14), a frame (16) is fixedly installed on the side of the furnace body (2) close to the connecting plate (14), a driving motor (17) is fixedly installed on the bottom end of the frame (16), a screw rod (18) is fixedly installed on the output end of the driving motor (17), the outer wall of the screw rod (18) is threadedly connected to a slide plate (19), and a limit plug column (20) is symmetrically fixedly installed on the top of the slide plate (19).

6. The petroleum coke waste heat boiler with a denitrification device according to claim 5, characterized in that: The limiting plug post (20) is slidably connected to the limiting plug hole (15), and the slide plate (19) is slidably connected to the frame (16).

7. The petroleum coke waste heat boiler with a denitrification device according to claim 5, characterized in that: A sealing strip (22) is fixedly mounted on one side of the connecting plate (14) close to the furnace body (2), and a sealing groove (21) is provided on one side of the furnace body (2) close to the connecting plate (14), wherein the sealing groove (21) is slidably connected to the sealing strip (22).

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