A coal tar online composite cleaning system for gas blowers

Abstract

The invention discloses an online composite cleaning system for coal tar of a gas blower, which relates to the field of coal tar cleaning of a gas blower, and includes a water storage tank, a high-temperature steam generator, a tar dissolving agent storage tank, an external steam pipeline, an external water pipeline, an external dissolving agent pipeline, a first composite spray gun group, a second composite spray gun group, a dissolving agent recovery tank and a control system; the input ends of the first composite spray gun group and the second composite spray gun group are both provided with three interfaces, the output end of the water storage tank is connected to the external water pipeline, and the output end of the high-temperature steam generator is connected to the external steam pipeline. The invention has a reasonable selection of cleaning media, and therefore has a high efficiency and cleaning performance far higher than that of traditional cleaning methods; the system adopts a method of recycling tar dissolving agents to reduce the consumption and discharge of dissolving agents, and has excellent energy-saving and environmental protection effects; the system greatly reduces manual operations through targeted preset control logic, and has extremely high work efficiency and a high degree of automation.

Description

Technical Field

[0001] The invention belongs to the technical field of coal tar cleaning for gas blowers, and in particular relates to an online composite cleaning system for coal tar for gas blowers. Background Art

[0002] In the coal chemical industry, some gas blowers convey coal gas containing coal tar mist, which will condense and adhere to the impeller surface and the volute flow channel surface; the long-term accumulation of tar will destroy the dynamic balance of the fan impeller and rotor, and then cause fan vibration and failure. At the same time, coal tar may also corrode the metal layer on the surface of the equipment, affecting the overall life of the equipment;

[0003] At present, the traditional way of cleaning coal tar in the industry is: shut down the unit, dismantle the fan casing, remove the upper casing, lift the rotor to the cleaning area, and use high-temperature steam or detergent to wash the impeller surface and the inner surface of the casing; the traditional cleaning method has the following disadvantages:

[0004] The maintenance cost is high. Every time the machine is shut down for maintenance, a lot of manpower and material resources are consumed, and the production line has no output during the downtime.

[0005] The cleaning efficiency is low. Tar accumulates on the surface of the equipment for a long time to form a hard tar shell, which is difficult to remove with steam or detergent in a short time.

[0006] The maintenance cycle is short and the tar is not cleaned during the operation of the fan, which will lead to rapid accumulation of tar and frequent maintenance. Summary of the invention

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an online composite cleaning system for coal tar of a gas blower, which effectively solves the problems raised in the background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a coal tar online composite cleaning system for a gas blower, comprising a water storage tank, a high-temperature steam generator, a tar solvent storage tank, an external steam pipeline, an external water pipeline, an external solvent pipeline, a first composite spray gun group, a second composite spray gun group, a solvent recovery tank and a control system;

[0009] The input ends of the first composite spray gun group and the second composite spray gun group are both provided with three interfaces, the output end of the water storage tank is connected to the external water pipeline, the output end of the high-temperature steam generator is connected to the external steam pipeline, the output end of the tar solvent storage tank is connected to the external solvent pipeline, the external steam pipeline, the external water pipeline and the external solvent pipeline are respectively connected to one of the interfaces of the first composite spray gun group, and the output ends of the external steam pipeline, the external water pipeline and the external solvent pipeline are also respectively connected to one of the interfaces of the second composite spray gun group;

[0010] A first solenoid valve is provided at the connection between the external steam pipeline and the first composite spray gun group, and a second solenoid valve is provided at the connection between the external steam pipeline and the second composite spray gun group, a third solenoid valve is provided at the connection between the external water pipeline and the first composite spray gun group, and a fourth solenoid valve is provided at the connection between the external water pipeline and the second composite spray gun group, a fifth solenoid valve is provided at the connection between the external solvent pipeline and the first composite spray gun group, and a sixth solenoid valve is provided at the connection between the external solvent pipeline and the second composite spray gun group, and the control system is simultaneously connected to the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve and the sixth solenoid valve signals and can be controlled;

[0011] The first composite spray gun group is installed on the air inlet of the fan, and the nozzle at the end thereof is aligned with the air inlet of the fan impeller. The first composite spray gun group has three external interfaces, which can evenly mix the cleaning water from the water storage tank, the high-temperature steam generated by the high-temperature steam generator, and the tar dissolving agent pumped out of the tar dissolving agent storage tank. The first composite spray gun group sprays the mixture of the three into the fan impeller flow channel in the form of mist;

[0012] The second composite spray gun group is installed on the fan volute, and the spray direction of the nozzle at the end is tangent to the outer circle of the fan impeller and consistent with the rotation direction of the impeller. The second composite spray gun group has three external interfaces, which can evenly mix the cleaning water from the water storage tank, the high-temperature steam generated by the high-temperature steam generator, and the tar solvent pumped out of the tar solvent storage tank. The second composite spray gun group 8 sprays the mixture of the three into the fan volute flow channel in the form of mist.

[0013] Preferably, the water storage tank is provided with a first liquid level transmitter, and the tar dissolving agent storage tank is provided with a second liquid level transmitter.

[0014] Preferably, the external water pipeline, the external steam pipeline and the external solvent pipeline are all provided with manual ball valves.

[0015] Preferably, a first pipeline pump is provided on one end of the external water pipeline close to the water storage tank, and a second pipeline pump is provided on one end of the external solvent pipeline close to the tar solvent storage tank.

[0016] Preferably, a first pressure gauge is provided on the external steam pipeline, and a second pressure gauge is provided on the external water pipeline.

[0017] Preferably, a filter is also provided on the external water pipeline, and the filter is located between the first pipeline pump and its corresponding manual ball valve.

[0018] Preferably, the tar dissolving agent storage tank is provided with a dissolving agent recovery tank, and the first composite spray gun group and the second composite spray gun group are connected to the dissolving agent recovery tank through pipelines.

[0019] Technical effects and advantages of the present invention:

[0020] 1. Through the control system, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve and the sixth solenoid valve, the spraying time interval, the spraying time and the spraying rhythm of the first composite spray gun group and the second composite spray gun group can be selectively controlled, and different pipelines can be controlled;

[0021] Three cleaning modes are set through the control system. Mode 1: Control the external water pipeline to open, and the external steam pipeline and the external solvent pipeline to close, and wash the fan with water to remove dust particles attached to the impeller and the volute; Mode 2: Control the external water pipeline to open, the external steam pipeline to open, and the external solvent pipeline to close, and wash the fan with high-temperature water mist to clean a small amount of coal tar and most of the dust attached to the impeller and the volute; Mode 3: Control the external water pipeline, the external steam pipeline, and the external solvent pipeline to open at the same time, and perform a composite cleaning on the fan to clean most of the coal tar and most of the dust attached to the impeller and the volute; The first composite spray gun group and the second composite spray gun group can use three cleaning modes;

[0022] In summary, the control system is highly editable. It can set specific cleaning modes and processes according to actual production needs. It can set parameters for cleaning time, cleaning water volume, high-temperature steam consumption, and tar solvent concentration separately. It can clean the inside of the fan online without stopping the fan unit, greatly extending the service life of the fan and the maintenance cycle of the unit.

[0023] The system has a reasonable selection of cleaning media, so it has a much higher cleaning efficiency than traditional cleaning methods; the system adopts the method of recycling tar solvents to reduce the consumption and emissions of solvents, and has excellent energy-saving and environmental protection effects; the system has a targeted preset control logic, which greatly reduces manual operations and has extremely high work efficiency and a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The figures are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the drawings:

[0025] Figure 1 It is the logic principle diagram of the device of the present invention;

[0026] Figure 2 It is a schematic diagram of the installation of the composite spray gun of the present invention.

[0027] In the figure: 1. water storage tank; 11. first liquid level transmitter; 2. high temperature steam generator; 3. tar solvent storage tank; 31. second liquid level transmitter; 4. external steam pipeline; 41. first pressure gauge; 42. first solenoid valve; 43. second solenoid valve; 5. external water pipeline; 51. filter; 52. first pipeline pump; 53. third solenoid valve; 54. fourth solenoid valve; 55. second pressure gauge; 6. external solvent pipeline; 61. second pipeline pump; 62. fifth solenoid valve; 63. sixth solenoid valve; 7. first compound spray gun group; 8. second compound spray gun group; 9. solvent recovery tank; 10. control system. DETAILED DESCRIPTION

[0028] The present invention provides Figure 1-2 The coal tar online composite cleaning system for a gas blower shown comprises a water storage tank 1, a high temperature steam generator 2, a tar solvent storage tank 3, an external steam pipeline 4, an external water pipeline 5, an external solvent pipeline 6, a first composite spray gun group 7, a second composite spray gun group 8, a solvent recovery tank 9 and a control system 10;

[0029] The input ends of the first composite spray gun group 7 and the second composite spray gun group 8 are both provided with three interfaces, the output end of the water storage tank 1 is connected to the external water pipeline 5, the output end of the high-temperature steam generator 2 is connected to the external steam pipeline 4, the output end of the tar dissolving agent storage tank 3 is connected to the external dissolving agent pipeline 6, the external steam pipeline 4, the external water pipeline 5 and the external dissolving agent pipeline 6 are respectively connected to one of the interfaces of the first composite spray gun group 7, and the output ends of the external steam pipeline 4, the external water pipeline 5 and the external dissolving agent pipeline 6 are also respectively connected to one of the interfaces of the second composite spray gun group 8;

[0030] A first solenoid valve 42 is provided at the connection between the external steam pipeline 4 and the first compound spray gun group 7, and a second solenoid valve 43 is provided at the connection between the external steam pipeline 4 and the second compound spray gun group 8, a third solenoid valve 53 is provided at the connection between the external water pipeline 5 and the first compound spray gun group 7, and a fourth solenoid valve 54 is provided at the connection between the external water pipeline 5 and the second compound spray gun group 8, a fifth solenoid valve 62 is provided at the connection between the external solvent pipeline 6 and the first compound spray gun group 7, and a sixth solenoid valve 63 is provided at the connection between the external solvent pipeline 6 and the second compound spray gun group 8, and the control system 10 is simultaneously connected to the first solenoid valve 42, the second solenoid valve 43, the third solenoid valve 53, the fourth solenoid valve 54, the fifth solenoid valve 62 and the sixth solenoid valve 63 signals and can be controlled.

[0031] The first composite spray gun group 7 is installed on the air inlet of the fan, and the nozzle at the end thereof is aligned with the air inlet of the impeller. The first composite spray gun group 7 has three external interfaces, which can evenly mix the cleaning water from the water storage tank 1, the high-temperature steam generated by the high-temperature steam generator 2, and the tar dissolving agent pumped out of the tar dissolving agent storage tank 3. The first composite spray gun group 7 sprays the mixture of the three into the impeller flow channel in the form of mist;

[0032] The second composite spray gun group 8 is installed on the fan volute, and the spray direction of the nozzle at the end thereof is tangent to the outer circle of the impeller and consistent with the rotation direction of the impeller. The second composite spray gun group 8 has three external interfaces, which can evenly mix the cleaning water from the water storage tank 1, the high-temperature steam generated by the high-temperature steam generator 2, and the tar dissolving agent pumped out of the tar dissolving agent storage tank 3. The second composite spray gun group 8 sprays the mixture of the three into the fan volute flow channel in the form of mist;

[0033] The mist mixture containing tar solvent sprayed by the first composite spray gun group 7 and the second composite spray gun group 8 has the impact of cleaning water on impurities, the softening property of high-temperature steam on tar, and the efficient solubility of tar solvent. The mist mixture can soften, dissolve and flush the coal tar attached to and solidified inside the impeller flow channel and the volute flow channel of the gas blower.

[0034] In one embodiment of the present invention: a first liquid level transmitter 11 is provided on the water storage tank 1 , and a second liquid level transmitter 31 is provided on the tar dissolving agent storage tank 3 .

[0035] In one embodiment of the present invention, manual ball valves are provided on the external water pipeline 5 , the external steam pipeline 4 and the external solvent pipeline 6 .

[0036] In one embodiment of the present invention, a first pipeline pump 52 is provided on one end of the external water pipeline 5 close to the water storage tank 1 , and a second pipeline pump 61 is provided on one end of the external solvent pipeline 6 close to the tar solvent storage tank 3 .

[0037] In one embodiment of the present invention, a first pressure gauge 41 is provided on the external steam pipeline 4 , and a second pressure gauge 55 is provided on the external water pipeline 5 .

[0038] In one embodiment of the invention: a filter 51 is also provided on the external water pipeline 5, and the filter 51 is located between the first pipeline pump 52 and its corresponding manual ball valve.

[0039] In one embodiment of the present invention: a solvent recovery tank 9 is provided on the tar solvent storage tank 3, and the first composite spray gun group 7 and the second composite spray gun group 8 are connected to the solvent recovery tank 9 through a pipeline. The solvent recovery tank 9 collects the tar-containing waste liquid discharged from the fan and sends it to a specific treatment device, and sends part of the solvent back to the tar solvent storage tank 3 for recycling.

[0040] Working principle of the present invention: through the control system 10, the first solenoid valve 42, the second solenoid valve 43, the third solenoid valve 53, the fourth solenoid valve 54, the fifth solenoid valve 62 and the sixth solenoid valve 63, the spraying time interval, spraying time and spraying rhythm of the first composite spray gun group 7 and the second composite spray gun group 8 can be selectively controlled, and different pipelines can be controlled;

[0041] Three cleaning modes are set by the control system 10. Mode 1: the external water pipeline 5 is controlled to be opened, and the external steam pipeline 4 and the external solvent pipeline 6 are closed, and the fan is washed with water to remove dust particles attached to the impeller and the volute; Mode 2: the external water pipeline 5 is controlled to be opened, the external steam pipeline 4 is controlled to be opened, and the external solvent pipeline 6 is closed, and the fan is washed with high-temperature water mist to clean a small amount of coal tar and most of the dust attached to the impeller and the volute; Mode 3: the external water pipeline 5, the external steam pipeline 4, and the external solvent pipeline 6 are controlled to be opened at the same time, and the fan is compositely cleaned to clean most of the coal tar and most of the dust attached to the impeller and the volute; the first composite spray gun group 7 and the second composite spray gun group 8 can both use three cleaning modes;

[0042] In summary, the control system 10 is highly editable, and a specific cleaning mode and process can be set according to actual production needs. The parameters of the cleaning time, the amount of cleaning water, the high-temperature steam consumption, and the concentration of the tar dissolving agent can be set separately. The inside of the fan can be cleaned online without stopping the fan unit, which greatly extends the service life of the fan and the maintenance cycle of the unit.

[0043] The system has a reasonable selection of cleaning media, so it has a much higher cleaning efficiency than traditional cleaning methods; the system adopts the method of recycling tar solvents to reduce the consumption and emissions of solvents, and has excellent energy-saving and environmental protection effects; the system has a targeted preset control logic, which greatly reduces manual operations and has extremely high work efficiency and a high degree of automation.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal tar online composite cleaning system for gas blowers, characterized by: It comprises a water storage tank (1), a high-temperature steam generator (2), a tar dissolving agent storage tank (3), an external steam pipeline (4), an external water pipeline (5), an external dissolving agent pipeline (6), a first composite spray gun group (7), a second composite spray gun group (8), a dissolving agent recovery tank (9) and a control system (10); The input ends of the first composite spray gun group (7) and the second composite spray gun group (8) are each provided with three interfaces, the output end of the water storage tank (1) is connected to an external water pipeline (5), the output end of the high-temperature steam generator (2) is connected to an external steam pipeline (4), the output end of the tar solvent storage tank (3) is connected to an external solvent pipeline (6), the external steam pipeline (4), the external water pipeline (5) and the external solvent pipeline (6) are respectively connected to one of the interfaces of the first composite spray gun group (7), and the output ends of the external steam pipeline (4), the external water pipeline (5) and the external solvent pipeline (6) are also respectively connected to one of the interfaces of the second composite spray gun group (8); A first solenoid valve (42) is provided at a connection point between the external steam pipeline (4) and the first composite spray gun group (7), and a second solenoid valve (43) is provided at a connection point between the external steam pipeline (4) and the second composite spray gun group (8), a third solenoid valve (53) is provided at a connection point between the external water pipeline (5) and the first composite spray gun group (7), and a fourth solenoid valve (54) is provided at a connection point between the external water pipeline (5) and the second composite spray gun group (8), a fifth solenoid valve (62) is provided at a connection point between the external solvent pipeline (6) and the first composite spray gun group (7), and a sixth solenoid valve (63) is provided at a connection point between the external solvent pipeline (6) and the second composite spray gun group (8), and the control system (10) is simultaneously connected to the first solenoid valve (42), the second solenoid valve (43), the third solenoid valve (53), the fourth solenoid valve (54), the fifth solenoid valve (62) and the sixth solenoid valve (63) by signals and can be controlled; The first composite spray gun group (7) is installed on the air inlet of the fan, and the nozzle of the end thereof is aligned with the air inlet of the fan impeller. The first composite spray gun group (7) has three external interfaces, which can evenly mix the cleaning water from the water storage tank (1), the high-temperature steam generated by the high-temperature steam generator (2), and the tar dissolving agent pumped out of the tar dissolving agent storage tank (3). The first composite spray gun group (7) sprays the mixture of the three into the fan impeller flow channel in the form of mist; The second composite spray gun group (8) is installed on the fan volute, and the spray direction of the nozzle at the end thereof is tangent to the outer circle of the fan impeller and consistent with the rotation direction of the impeller. The second composite spray gun group (8) has three external interfaces, which can evenly mix the cleaning water from the water storage tank (1), the high-temperature steam generated by the high-temperature steam generator (2), and the tar dissolving agent pumped out of the tar dissolving agent storage tank (3). The second composite spray gun group (8) sprays the mixture of the three into the fan volute flow channel in the form of mist.

2. The coal tar online composite cleaning system for gas blowers according to claim 1, characterized in that: The water storage tank (1) is provided with a first liquid level transmitter (11), and the tar dissolving agent storage tank (3) is provided with a second liquid level transmitter (31).

3. The coal tar online composite cleaning system for gas blowers according to claim 2, characterized in that: Manual ball valves are provided on the external water pipeline (5), the external steam pipeline (4) and the external solvent pipeline (6).

4. The coal tar online composite cleaning system for gas blowers according to claim 3, characterized in that: A first pipeline pump (52) is provided on one end of the external water pipeline (5) close to the water storage tank (1), and a second pipeline pump (61) is provided on one end of the external solvent pipeline (6) close to the tar solvent storage tank (3).

5. The coal tar online composite cleaning system for gas blowers according to claim 4, characterized in that: The external steam pipeline (4) is provided with a first pressure gauge (41), and the external water pipeline (5) is provided with a second pressure gauge (55).

6. The coal tar online composite cleaning system for gas blowers according to claim 5, characterized in that: The external water pipeline (5) is also provided with a filter (51), and the filter (51) is located between the first pipeline pump (52) and its corresponding manual ball valve.

7. The coal tar online composite cleaning system for gas blowers according to claim 6, characterized in that: The tar dissolving agent storage tank (3) is provided with a dissolving agent recovery tank (9), and the first composite spray gun group (7) and the second composite spray gun group (8) are both connected to the dissolving agent recovery tank (9) via pipelines.

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