Ammonia gas leakage treatment system and method in ammonia fuel engine general assembly workshop
By setting up a combined design of spray components and ammonia absorption pipelines in the ammonia fuel engine assembly plant, the problem of ammonia leakage treatment is solved, and the rapid capture and treatment of leaked ammonia is achieved, ensuring safety in the factory and Environmental friendly.
Patent Information
- Application Number
- CN202411478180.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2024-12-10
AI Technical Summary
In ammonia fuel engine assembly plants, ammonia leakage may cause health problems and environmental pollution of workers, and it is difficult for the existing technology to effectively capture and deal with leaked ammonia, especially during bench testing.
An ammonia leakage treatment system was designed, including a spray assembly and an ammonia absorption pipeline. The spray head of the spray assembly is located inside the roof ventilator to form a water curtain. The capture port is located below the spray head, and the ammonia absorption pipeline passes through The exhaust device is connected to the exhaust gas treatment device, and uses the I-shaped structure of the spray water and the absorption branch pipe to quickly capture and treat leaked ammonia.
Effectively prevent ammonia from escaping outdoors. Through the combined design of the spray water curtain and the capture port, the leakage ammonia is quickly absorbed and treated, avoiding personnel injuries and environmental pollution, and ensuring safety and environmental protection in the factory. .
Smart Images
Figure CN119098031A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ammonia fuel engines, and in particular to a system and method for treating ammonia leakage in an ammonia fuel engine assembly plant. Background Art
[0002] After assembly, the marine low-speed ammonia fuel engine needs to be tested on a bench. Performance tests can be carried out in the assembly plant, but due to factors such as production and assembly, ammonia fuel leakage may occur during the test. Ammonia is a toxic gas with a strong pungent odor. Excessive ammonia concentration in the plant will cause health problems for workers. Therefore, the maximum allowable concentration in the plant is 30mg / m 3 During bench testing, if ammonia fuel leakage occurs, the leaked ammonia needs to be dealt with quickly.
[0003] The inventors found that since the general assembly plant needs to be equipped with an air tower and a roof ventilator for ventilation, the air tower is generally located at the highest point in the middle of the plant. When ammonia leaks, the ammonia will rise to the roof. If the ammonia is not handled in time, the ammonia will be discharged to the outside through the roof ventilator, thereby polluting the gas environment outside the plant. In order to ensure safety and prevent ammonia from escaping, it is necessary to quickly and effectively capture and handle ammonia when it leaks. Summary of the invention
[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an ammonia leakage treatment system and method in an ammonia fuel engine assembly plant, which can effectively solve the problem of capturing ammonia leakage during bench testing in the plant, avoid personal injury and environmental pollution caused by leakage and spread of ammonia fuel room, and effectively solve the safety and environmental protection problems of ammonia leakage and spread in ammonia fuel bench testing.
[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:
[0006] In a first aspect, an ammonia leakage treatment system in an ammonia fuel engine assembly plant comprises:
[0007] A spray assembly, including a spray pipe, a spray head is provided at the front end of the spray pipe, and the spray head is located inside the roof ventilator at the air building of the plant to form a water curtain;
[0008] The front end of the ammonia absorption pipeline extends to the gas tower and is provided with a collection port, the collection port is located below the spray head, and the rear end of the ammonia absorption pipeline is connected to the tail gas treatment device through the exhaust device.
[0009] As a further implementation method, the spray pipeline includes a spray main pipe and a spray branch pipe, the spray branch pipe body is connected to the spray main pipe, and the spray heads are arranged at both ends of the spray branch pipe.
[0010] As a further implementation, the height of the sprinkler head is greater than the height of the roof ventilator.
[0011] As a further implementation method, the sprinkler pipe is supported at a position near the roof of the factory building through a corresponding pipe support structure, and the rear end of the sprinkler pipe extends to the two side walls of the factory building and is connected to the fire water.
[0012] As a further implementation, the spray assembly also includes a water tank, which is transversely arranged on the roof of the factory building, and the front end of the water tank is located below the spray head.
[0013] As a further implementation method, it also includes ammonia detectors installed on the factory test bench and the gas building.
[0014] As a further implementation method, the ammonia absorption pipeline has a rectangular cross-section and is hoisted under the I-beam of the factory building.
[0015] As a further implementation, the ammonia absorption pipeline includes a discharge pipeline, which serves as a main pipeline to connect several groups of absorption branches, the absorption branches are in an I-shaped structure, and the capture port is arranged at the end of the I-shaped structure.
[0016] As a further implementation, a diffuser is provided at the collection port.
[0017] In a second aspect, a method for treating ammonia leakage in an ammonia fuel engine assembly plant adopts any of the ammonia leakage treatment systems described above, comprising the following steps:
[0018] When ammonia leaks during the test on the test bench in the factory, the ammonia detector at the test bench will first detect the ammonia leak, start the exhaust device to guide the ammonia to escape and rise to the roof; when the ammonia detector at the air building detects the ammonia leak and exceeds the monitoring concentration, the spray assembly will be immediately started, and the sprinkler head will spray water to form a water curtain on the inside of the roof ventilator, and at the same time close the roof ventilator to prevent the ammonia from being discharged to the outside; the leaked ammonia indoors is captured through the capture port, and the collected ammonia is sent to the exhaust gas treatment device through a pipeline.
[0019] The beneficial effects of the present invention are as follows:
[0020] 1. The present invention sets up an ammonia leakage treatment system in the ammonia fuel engine assembly plant. By setting a spray component, the spray head is located on the inner side of the roof ventilator at the air tower position of the plant to form a water curtain, which can prevent the leaked ammonia from escaping from the roof ventilator; the capture port on the ammonia absorption pipeline can quickly absorb the leaked helium, and the escaped ammonia not captured by the capture port can be absorbed and treated by spraying water.
[0021] 2. The capture port of the present invention is located below the spray head, and the spray head is located on the inner side of the roof ventilator at the air tower of the plant, ensuring that in the rising path of ammonia, it is first absorbed by the capture port and then sprayed by the spray water.
[0022] 3. The absorption branch pipe of the present invention has an I-shaped structure, so that the collection port is located near the two side walls of the gas tower. The collection ports are evenly arranged at the gas tower, which can achieve rapid absorption of ammonia.
[0023] 4. The collection port of the present invention is provided with a diffuser to improve the effect of the collection port in absorbing ammonia. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0025] Figure 1 Schematic diagram of an ammonia gas leakage treatment system in an ammonia fuel engine assembly plant according to an embodiment of the present invention;
[0026] Figure 2 Schematic diagram of the arrangement of ammonia absorption pipelines in an embodiment of the present invention;
[0027] Figure 3 Schematic diagram of the end structure of the ammonia absorption pipeline in an embodiment of the present invention;
[0028] Figure 4 is a pipeline hoisting node diagram in an embodiment of the present invention;
[0029] Figure 5 It is a spray arrangement node diagram in an embodiment of the present invention.
[0030] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.
[0031] Among them: 1. Assembly station, 2. Ammonia absorption pipeline, 3. Spray pipeline, 4. Gas tower, 5. I-beam, 6. Tiger clip, 7. Screw, 8. Nut, 9. C-shaped steel, 10. Rectangular pipeline, 11. Pipe support, 12. U-bolt; 21. Capture port, 22. First absorption pipeline, 23. Second absorption pipeline, 24. Third absorption pipeline, 25. Discharge pipeline, 211. Diffuser; 31. Spray branch pipe, 32. Spray head, 41. Roof ventilator. DETAILED DESCRIPTION
[0032] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0033] Embodiment 1
[0034] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 5 As shown, an ammonia leakage treatment system in an ammonia fuel engine assembly plant is provided in the ammonia fuel engine assembly plant to facilitate bench testing of marine low-speed ammonia fuel engines. When an ammonia leakage occurs, the leaked ammonia can be quickly treated by the ammonia leakage treatment system.
[0035] The ammonia leakage treatment system includes a spray assembly and an ammonia absorption pipeline 2, which are respectively used for spraying and absorbing ammonia. By spraying, the ammonia is prevented from diffusing by utilizing the principle that ammonia is easily soluble in water.
[0036] like Figure 1 As shown, an assembly station 1 is provided near the left side of the assembly plant, the roof gradually rises from both sides to the middle, and an air tower 4 is provided in the middle. The cross-section of the air tower 4 is an inverted U-shaped structure, and roof ventilators 41 are provided on both sides for achieving ventilation inside the plant.
[0037] When conducting bench tests on marine low-speed ammonia fuel engines in a factory, if ammonia leakage occurs, it is necessary to quickly deal with the ammonia in the factory to prevent the leaked ammonia from escaping to the outdoors or affecting the health of workers in the factory.
[0038] This embodiment includes multiple ammonia detectors installed on the factory test bench and the gas building, which are used to detect ammonia leakage in the factory. When the set standard is exceeded, a signal can be transmitted to the control mechanism, and the control mechanism starts the spray group component and opens the ammonia absorption pipeline. The control method of the control mechanism is the existing technology.
[0039] The spray assembly includes a spray pipe 3, a spray head 32 is provided at the front end of the spray pipe 3, and the spray head 32 is located inside the roof ventilator 41 at the air tower position of the factory building to form a water curtain.
[0040] like Figure 1 , Figure 5 As shown, the spray pipeline 3 includes a spray main pipe and a spray branch pipe 31. Figure 1 In the middle, it extends from the left and right walls of the top of the factory building to the middle to connect to the sprinkler branch pipe 31. Sprinkler heads 32 are arranged at both ends of the sprinkler branch pipe 31. The rear end of the sprinkler main pipe is close to the left and right walls of the factory building for connecting fire water. The fire water reaches the sprinkler head 32 through the sprinkler main pipe and the sprinkler branch pipe 31.
[0041] The middle position of the spray branch pipe 31 body is vertically connected to the spray main pipe, and the multiple spray branch pipes 31 at the air tower 4 are parallel to each other and arranged in parallel along the length direction of the air tower 4. The spray heads 32 at both ends of the spray branch pipe 31 are atomizing spray heads.
[0042] like Figure 1 and Figure 5 As shown, the spray main pipe on each side extends to the air tower 4 and is distributed along the length direction of the air tower 4. The atomizing spray heads are located on the left and right sides of the spray main pipe at the air tower 4. The spray main pipe of this section is supported by a pipe support 11 structure. The pipe support 11 is a support block structure and can be set on the crossbeam at the air tower 4. The spray pipe 3 is fixedly connected to the pipe support 11 by a U-bolt 12.
[0043] In other examples, the spray pipe 3 may be fixed in other ways, as long as the spray branch pipes 31 are arranged along the length direction of the air tower 4 .
[0044] After the valve on the spray pipe 3 is opened, fire water is sprayed from the spray head 32 to spray ammonia. Figure 5 As shown, the height of the spray head 32 is greater than the height of the roof ventilator 41. The spray head 32 is located inside the roof ventilator 41. When spraying, the roof ventilator 41 is closed, and a water curtain can be formed inside the roof ventilator 41 through spraying, thereby preventing ammonia from escaping from the roof ventilator 41 to the outside of the factory building, which can effectively prevent ammonia from escaping.
[0045] The spray assembly of this embodiment also includes a water tank, which is horizontally arranged on the roof of the factory building. The front end of the water tank is located below the spray head 32. After absorbing ammonia, the spray water can fall into the water tank. The rear end of the water tank can be connected to a wastewater treatment mechanism to centrally treat the wastewater after absorbing ammonia.
[0046] In order to further improve the ammonia treatment effect, an ammonia absorption pipeline 2 is set to quickly absorb the ammonia. Figure 1-Figure 4 As shown, the front end of the ammonia absorption pipeline 2 extends to the gas building 4 and is provided with a collection port 21. The rear end of the ammonia absorption pipeline 2 is connected to the exhaust gas treatment device through an exhaust device. An exhaust fan can be selected to form a negative pressure in the pipeline by exhausting air, thereby guiding the air flow in the factory to rise. When ammonia leaks at the test bench, the ammonia detector at the test bench first detects the ammonia leakage. At this time, the exhaust device is turned on to guide the ammonia to gather upward and suck the gas into the pipeline. The collection port 21 is located below the spray head 32.
[0047] The cross section of the ammonia absorption pipeline 2 is rectangular, and the rectangular pipeline 10 is hoisted under the I-beam 5 of the factory building. Specifically, an I-beam 5 is provided on the roof of the factory building, and the bottom of the I-beam 5 is connected to the screw 7 through a tiger clip 6. A C-shaped steel 9 is provided between the bottom ends of the two screws 7, and a nut 8 cooperates with the bottom end of the screw 7 to support the C-shaped steel 9. Figure 4 As shown, the rectangular pipe 10 is supported on the C-shaped steel 9 between the screw rods 7.
[0048] like Figure 2 As shown, the ammonia absorption pipeline 2 includes a discharge pipeline 25 and an absorption pipeline. The discharge pipeline serves as a main pipeline to connect several groups of absorption branches. The absorption pipeline serves as an absorption branch and includes a first absorption pipeline 22, a second absorption pipeline 23, and a third absorption pipeline 24.
[0049] Two first absorption pipes 22 and one second absorption pipe 23 are connected to form a group of I-shaped structures, which are located at the gas tower, and multiple groups of I-shaped structures are arranged along the length direction of the gas tower. The second absorption pipe 23 of each group of I-shaped structures is connected to the discharge pipe 25 through the third absorption pipe 24, and the capture port is set at both ends of the first absorption pipe 22.
[0050] The discharge pipe 25 is connected to the exhaust gas treatment device through an exhaust fan. When the exhaust fan is turned on, the collection port can absorb ammonia. After the ammonia passes through the collection port 21 and sequentially through the first absorption pipe 22, the second absorption pipe 23, and the third absorption pipe 24, it is discharged to the exhaust gas treatment device through the discharge pipe 25 and the exhaust fan for centralized treatment.
[0051] In order to improve the absorption effect of ammonia, Figure 3 As shown, each collection port 21 is provided with a diffuser 211, and the diffuser 211 is arranged downward to facilitate maximum absorption of ammonia.
[0052] The capture port 21 of this embodiment is located on the inner side of the sprinkler head. The sprinkler head 32 mainly functions to form a water curtain at the roof ventilator 41 to prevent ammonia from escaping outward through the roof ventilator 41 . Most of the ammonia is absorbed through the capture port 21 .
[0053] This embodiment starts with simulating the ammonia leakage diffusion path of the ammonia fuel engine bench test in the plant, designs the ammonia leakage capture system in the assembly bench test plant, takes the ammonia diffusion rising channel as the capture position, and uses the capture port exhaust to guide the diffused ammonia flow direction to capture the leaked ammonia. A water spray curtain is set on the upper side of the capture port to prevent ammonia from escaping, and the collected water vapor is sent to the exhaust gas treatment equipment and water treatment equipment. The system is operated after the ammonia leak is detected, thereby effectively solving the capture problem after the ammonia leak.
[0054] Embodiment 2
[0055] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 5 As shown, a method for treating ammonia leakage in an ammonia fuel engine assembly plant adopts an ammonia leakage treatment system as in Example 1, comprising the following steps:
[0056] When ammonia leaks during the test bench test in the factory, the exhaust device is turned on to guide the ammonia to escape and rise to the roof. When the ammonia detector detects ammonia leakage and exceeds the monitoring concentration, it transmits a signal to the controller. The controller immediately starts the spray assembly, and the spray head 32 sprays water on the inside of the roof ventilator 41 to form a water curtain. At the same time, the roof ventilator 41 is closed to prevent ammonia from being discharged to the outside. The leaked ammonia in the room is captured by the capture port 21, and the collected ammonia is sent to the tail gas treatment device through a pipeline. The escaped ammonia not captured by the capture port 21 is sprayed with water for absorption and treatment. It effectively solves the problem of capturing ammonia leakage during the bench test in the factory, avoids personal injury and environmental pollution caused by the indoor leakage and spread of ammonia fuel, and can effectively solve the safety and environmental protection problems of ammonia leakage and spread in the ammonia fuel bench test.
[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An ammonia leakage treatment system in an ammonia fuel engine assembly plant, characterized in that: include: A spray assembly, including a spray pipe, a spray head is provided at the front end of the spray pipe, and the spray head is located inside the roof ventilator at the air building of the plant to form a water curtain; The front end of the ammonia absorption pipeline extends to the gas tower and is provided with a collection port, the collection port is located below the spray head, and the rear end of the ammonia absorption pipeline is connected to the tail gas treatment device through the exhaust device.
2. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 1, characterized in that: The spray pipeline comprises a spray main pipe and a spray branch pipe, the spray branch pipe body is connected to the spray main pipe, and the spray heads are arranged at both ends of the spray branch pipe.
3. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 2, characterized in that: The height of the sprinkler head is greater than the height of the roof ventilator.
4. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 2, characterized in that: The sprinkler pipe is supported at a position close to the roof of the factory building through a corresponding pipe support structure, and the rear end of the sprinkler pipe extends to the two side walls of the factory building and is connected to the fire water.
5. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 2, characterized in that: The spray assembly also includes a water tank, which is transversely arranged on the roof of the factory building, and the front end of the water tank is located below the spray head.
6. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 1, characterized in that: It also includes ammonia detectors, which are installed on the plant test benches and gas buildings.
7. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 1, characterized in that: The ammonia absorption pipeline has a rectangular cross section and is hoisted under the I-beam of the factory building.
8. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 7, characterized in that: The ammonia absorption pipeline comprises a discharge pipeline, which is used as a main pipeline to connect several groups of absorption branch pipes. The absorption branch pipes are in an I-shaped structure, and the capture port is arranged at the end of the I-shaped structure.
9. The ammonia leakage treatment system in the ammonia fuel engine assembly plant according to claim 8, characterized in that: A diffuser is provided at the collection port.
10. A method for treating ammonia leakage in an ammonia fuel engine assembly plant, characterized in that: The ammonia leakage treatment system according to any one of claims 1 to 9 comprises the following steps: When ammonia leaks during the test on the test bench in the factory, the ammonia detector at the test bench will first detect the ammonia leak, start the exhaust device to guide the ammonia to escape and rise to the roof; when the ammonia detector at the air building detects the ammonia leak and exceeds the monitoring concentration, the spray assembly will be immediately started, and the sprinkler head will spray water to form a water curtain on the inside of the roof ventilator, and at the same time close the roof ventilator to prevent the ammonia from being discharged to the outside; the leaked ammonia indoors is captured through the capture port, and the collected ammonia is sent to the exhaust gas treatment device through a pipeline.