Cleaning method, control device, equipment and product of yellow phosphorus furnace gas electrostatic dust collector

Abstract

The invention provides a cleaning method of a yellow phosphorus furnace gas electrostatic dust collector, a control device, equipment and a product. The cleaning method comprises the following steps: receiving a cleaning instruction, and sequentially cutting off furnace gas input and output and a dust remover power supply; the internal temperature of the dust remover monitored by the temperature sensor in real time is received, and when the internal temperature of the dust remover is smaller than or equal to a preset safety threshold value, a cleaning program is triggered; and the cleaning assembly is controlled to conduct spraying cleaning on the interior of the dust remover according to the preset pressure, water temperature and water spraying duration. Dust, coal tar and other similar viscous substances attached to the anode plate and the cathode wire are cleaned through regular water spraying, and therefore the dust removal efficiency is guaranteed. Dust, coal tar and other similar viscous substances attached to the anode plate and the cathode wire are cleaned by spraying water regularly, and the dust removal efficiency is ensured by combining with the arrangement of the spiral dust conveyor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of yellow phosphorus furnace gas purification and dust removal, in particular to a cleaning method, a control device, equipment and products of a yellow phosphorus furnace gas electrostatic precipitator. BACKGROUND

[0002] The dust in the yellow phosphorus furnace gas is partly the dust carried in the raw materials and the dust produced by the cracking of the furnace charge in the electric furnace, and the other part is the volatile compounds generated by the volatile components in the furnace charge meeting high temperature and then condensing after the temperature decreases. The dust content in the furnace gas generated by the yellow phosphorus device is high, and about 100-200 kg of dry dust is generated for every 1 t of yellow phosphorus produced. The high-temperature furnace gas discharged from the furnace top enters the 3-4 stage spray phosphorus recovery condensing tower through the gas guide pipe, and the gaseous yellow phosphorus is condensed and recovered; the dust and harmful impurities in the furnace gas are absorbed and adhered by the liquid drops, and after being captured, they fall into the phosphorus receiving tank at the bottom, among which SiF4 is hydrolyzed into fluorosilicic acid colloid and precipitates, and the dust, fluorosilicic acid and tar are wrapped together with the yellow phosphorus to form mud phosphorus; the crude yellow phosphorus and the mud phosphorus are preliminarily separated due to the difference in density in the phosphorus receiving tank, the crude yellow phosphorus is sent to the refining tank for rinsing and refining to reach the purity of the product yellow phosphorus; the large amount of mud phosphorus separated out wraps the yellow phosphorus, and needs to be treated by closed steam phosphorus to recover the residual phosphorus in the mud phosphorus.

[0003] As can be seen from the foregoing, if the dust in the yellow phosphorus furnace gas cannot be removed before condensation and phosphorus recovery, a large amount of mud phosphorus will be generated in the process of phosphorus recovery, and the subsequent treatment of the mud phosphorus will increase the steam phosphorus process, increase the energy consumption, and there is a potential environmental risk.

[0004] At present, the spray dust removal method used for the yellow phosphorus furnace gas has problems such as large amount of phosphorus mud, low one-time phosphorus recovery rate, long refining time, etc. Dry dust removal of yellow phosphorus furnace gas is an important issue to be solved in the yellow phosphorus industry, and on February 11, 2022, the National Development and Reform Commission and other four departments issued the "Guidelines for Energy Saving and Carbon Reduction Transformation and Upgrading in Key Fields of High Energy-consuming Industries (2022 Edition)", which pointed out that the yellow phosphorus industry should accelerate the application of dry dust removal technology for phosphorus furnace gas in the future in the direction of green technology process.

[0005] Although dry dust removal is an effective method for purifying and removing dust from yellow phosphorus furnace gas, the phosphorus furnace gas contains CO, phosphorus, SiF4, HS, S and fine phosphorus powder, coke powder and other impurities. These impurities enter the dry horizontal electrostatic precipitator together, and in addition, the dust content in the furnace gas generated by the yellow phosphorus device is high, about 100-200 kg of dry dust is generated for every 1 t of yellow phosphorus produced. After the dry horizontal electrostatic precipitator operates for a period of time, the dust, coal tar and other similar sticky substances will adhere to the anode plate and cathode wire in the precipitator, and will be pasted on the surface. If it is not cleaned in time, it will affect the formation of the electrostatic field between the anode plate and the cathode wire, thereby greatly reducing the dust removal efficiency of the dry horizontal electrostatic precipitator. SUMMARY

[0006] To this end, the application provides a yellow phosphorus furnace gas electrostatic precipitator cleaning method, control device, equipment and product, which solves the problem of low dust removal efficiency in the dry horizontal electrostatic precipitator in the existing yellow phosphorus production dust removal process.

[0007] In a first aspect of the application, a yellow phosphorus furnace gas electrostatic precipitator cleaning method is provided, comprising the following steps:

[0008] Receive the cleaning instruction, and sequentially cut off the furnace gas input and output, and the precipitator power supply;

[0009] Receive the internal temperature of the precipitator monitored by the temperature sensor in real time, and trigger the cleaning program when the internal temperature of the precipitator is less than or equal to the preset safety threshold;

[0010] Control the cleaning assembly to spray and clean the inside of the precipitator at a preset pressure, water temperature and water spraying time.

[0011] As an optional embodiment, a screw ash conveying machine for receiving dry ash and sewage is arranged below the precipitator, the screw ash conveying machine comprises an ash discharge pipe connected to a dry ash collecting device and a sewage discharge pipe connected to a sewage collecting device, and the method further comprises,

[0012] During the cleaning process, the screw ash conveying machine is kept running, the ash discharge pipe is closed to stop collecting dry ash, and the sewage discharge pipe is opened to collect cleaning sewage.

[0013] As an optional embodiment, after the cleaning is completed, the furnace gas output and input are restarted to dry the inside of the precipitator, the output humidity of the precipitator is obtained, and the power supply of the precipitator is restored after it is determined that the output humidity is not greater than the preset humidity value.

[0014] As an optional embodiment, the preset safety threshold is 90℃, and the state of the monitoring temperature being less than or equal to 90℃ needs to be maintained for at least 5 minutes before the cleaning program is started.

[0015] As an optional embodiment, the continuous running time of the precipitator and the accumulated ash thickness detected by the thickness sensor in the precipitator are obtained, and a cleaning instruction is issued when the accumulated ash thickness detected by the thickness sensor reaches an accumulated ash cleaning threshold or the continuous running time of the precipitator reaches a cleaning time threshold.

[0016] As an optional embodiment, a stop cleaning instruction is issued when the accumulated ash thickness detected by the thickness sensor reaches a cleaning cleanliness threshold or the cleaning time reaches a cleaning time threshold.

[0017] As an optional embodiment, the method further comprises a rapping program, which comprises,

[0018] Before the cleaning program is started, the rapping device is opened to knock the accumulated ash assembly in the precipitator at a preset frequency; or,

[0019] The cleaning program is started after a preset period of delay, and the knocking device is started to knock the dust assembly in the dust remover at a preset frequency;

[0020] The knocking continues for a preset period of time after the cleaning program is completed, so that residual sewage falls off.

[0021] In a second aspect, the application provides a cleaning control device for a yellow phosphorus furnace gas electrostatic precipitator, comprising,

[0022] The input module is configured to receive a cleaning instruction and receive an internal temperature of the dust remover monitored by a temperature sensor in real time.

[0023] The control module is configured to sequentially cut off the furnace gas input and output and the power supply of the dust remover according to the signals received by the input module, and control the cleaning assembly to spray and clean the dust remover at a preset pressure, water temperature and spraying time.

[0024] The judgment module is configured to determine whether the internal temperature of the dust remover is less than or equal to a preset safety threshold, and trigger the cleaning program if the result is yes.

[0025] In a third aspect, the application provides a device, comprising:

[0026] A processor and a memory arranged to store computer executable instructions that, when executed, cause the processor to perform any of the described methods.

[0027] In a fourth aspect, the application provides a computer program product comprising computer programs / instructions that, when executed by a processor, implement any of the described methods.

[0028] The application provides a cleaning method, control device, equipment and product for a yellow phosphorus furnace gas electrostatic precipitator. The cleaning instruction is received, and the furnace gas input and output and the power supply of the dust remover are sequentially cut off. The internal temperature of the dust remover monitored by a temperature sensor in real time is received. When the internal temperature of the dust remover is less than or equal to a preset safety threshold, the cleaning program is triggered. The cleaning assembly sprays and cleans the dust remover at a preset pressure, water temperature and spraying time. Dust, coal tar and other similar sticky substances attached to the anode plate and cathode wire are cleaned by regular water spraying, thereby ensuring the dust removal efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the application, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0030] Figure 1 A schematic flowchart illustrating a cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas provided in an embodiment of this application;

[0031] Figure 2 A schematic diagram of the overall structure of a cleaning device for an electrostatic precipitator of yellow phosphorus furnace gas provided in this application embodiment;

[0032] Figure 3 A cross-sectional structural schematic diagram of a cleaning device for an electrostatic precipitator of yellow phosphorus furnace gas provided in an embodiment of this application;

[0033] Figure 4 A partially enlarged structural diagram of position A of the cross-sectional structure of a cleaning device for an electrostatic precipitator of yellow phosphorus furnace gas provided in this application embodiment;

[0034] Figure 5 A schematic diagram of the cleaning control device for a yellow phosphorus furnace gas electrostatic precipitator provided in this application embodiment;

[0035] Figure 6 This is a schematic diagram of the structure of a device provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Dust collector; 2-Air inlet; 3-Air inlet valve; 4-Water spray pipe; 5-Cleaning nozzle; 6-Near-end sewage pipe; 7-Near-end sewage pipe valve; 8-Far-end sewage pipe valve; 9-Far-end sewage pipe; 10-Ash discharge pipe; 11-Ash discharge valve; 12-Screw conveyor; 13-Air outlet; 14-High-voltage power supply; 15-Anode plate; 16-Cathode wire; 17-Air outlet valve; 18-Water spray pipe valve;

[0038] 500-Cleaning control device; 501-Input module; 502-Control module; 5021-Ash conveyor control module; 5022-Restart module; 503-Judgment module; 504-Safety monitoring module; 505-Cleaning command sending module; 506-Stop cleaning command sending module; 507-Vibration program module;

[0039] 600 - Device; 601 - Processor; 602 - Memory; 603 - Communication module. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] The wet dust removal process for yellow phosphorus furnace gas, widely used in domestic production, generates a large amount of phosphorus mud. The subsequent treatment of this mud is costly, energy-intensive, and poses potential environmental risks. Therefore, dry dust removal before the furnace gas enters the condenser to collect the solid dust is a new green and low-carbon technology encouraged by the state.

[0042] After a period of operation, dust, coal tar, and other similar sticky substances will adhere to the anode plate and cathode wires of a dry horizontal electrostatic precipitator and stick to the surface. If not cleaned in time, it will affect the formation of an electrostatic field between the anode plate and the cathode wire, thereby greatly reducing the dust removal efficiency of the dry horizontal electrostatic precipitator.

[0043] Therefore, this application provides a cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas, see [link to relevant documentation]. Figure 1 This includes the following steps:

[0044] Upon receiving the cleaning command, the furnace gas input and output, and the dust collector power supply are sequentially cut off.

[0045] The system receives real-time monitoring data of the dust collector's internal temperature from a temperature sensor. When the internal temperature of the dust collector is less than or equal to a preset safety threshold, the cleaning program is triggered.

[0046] The cleaning components are controlled to spray and clean the inside of the dust collector according to preset pressure, water temperature and spray duration.

[0047] In one embodiment provided in this application, a screw conveyor for receiving dry ash and wastewater is installed below the dust collector. The screw conveyor includes an ash discharge pipe connected to a dry ash collection device and a sewage discharge pipe connected to a wastewater collection device. The method further includes...

[0048] During the cleaning process, keep the screw conveyor running, close the ash discharge pipe to stop collecting dry ash, and open the sewage discharge pipe to collect the cleaning wastewater.

[0049] To avoid mixing dry ash and wastewater and affecting their respective recycling, the ash discharge pipe is closed and the sewage discharge pipe is opened during cleaning.

[0050] In one embodiment provided in this application, after cleaning is completed, the furnace gas output and input are restarted to dry the inner cavity of the dust collector, the output humidity of the dust collector is obtained, and after determining that the output humidity is not greater than the preset humidity value, the power supply to the dust collector is restored.

[0051] For example, the humidity value of the gas at the gas inlet is detected by a humidity sensor. If the humidity value is >5%, the drying time is extended until the humidity value is ≤5%.

[0052] In one embodiment provided in this application, the preset safety threshold is 90°C, and before the cleaning program is started, the monitored temperature must be maintained at ≤90°C for at least 5 minutes. This indicates that the temperature has reached a continuous and stable safe range.

[0053] In one embodiment provided in this application, the continuous operating time of the dust collector and the dust accumulation thickness detected by the thickness sensor inside the dust collector are obtained. When the dust accumulation thickness detected by the thickness sensor reaches the dust accumulation cleaning threshold, or the continuous operating time of the dust collector reaches the cleaning time threshold, a cleaning command is issued.

[0054] For example, the thickness sensor is used to measure the overall thickness of the anode plate. The overall thickness of the anode plate minus its own thickness, divided by two, gives the thickness of a single layer of ash accumulation. The ash accumulation cleaning threshold can be set by adding 2 times the anode plate's own thickness to the maximum allowable value for a single layer of ash accumulation. For example, if the anode plate's own thickness is 5mm and the maximum allowable value for a single layer of ash accumulation is 5mm, then the ash accumulation cleaning threshold can be set to 15mm. That is, when the overall thickness of the anode plate detected by the thickness sensor increases to 15mm, a cleaning command is issued.

[0055] A cleaning command is also issued when the continuous operating time of the dust collector reaches the required cleaning time threshold. For example, if the overall thickness of the anode plate is less than 15mm but the continuous operating time is ≥72 hours, cleaning will be forcibly started to avoid the dust collector running for too long or misjudgment caused by the thickness sensor malfunction.

[0056] In one embodiment provided in this application, a stop cleaning command is issued when the dust accumulation thickness detected by the thickness sensor reaches the cleaning threshold, or when the cleaning time reaches the cleaning threshold.

[0057] For example, the cleaning threshold can be set by adding 2 times the anode plate's own thickness to the single-layer cleaning threshold. For instance, if the anode plate's own thickness is 5mm and the single-layer dust accumulation cleaning threshold is 0.02mm, then the cleaning threshold can be set to 5.04mm. That is, when the overall thickness of the anode plate detected by the thickness sensor decreases to 5.04mm, a stop cleaning command is issued.

[0058] Alternatively, a stop cleaning command can be issued when the cleaning time reaches 20 minutes.

[0059] In one embodiment provided in this application, the method further includes a vibration procedure, which includes:

[0060] Before starting the cleaning program, turn on the rapping device to tap the dust-accumulating components inside the dust collector at a preset frequency; or,

[0061] After the cleaning program starts, a preset delay period is applied, and the rapping device is activated to strike the dust-accumulating components inside the dust collector at a preset frequency.

[0062] After the cleaning process is completed, continue vibrating for a preset time to remove any remaining wastewater.

[0063] Before the cleaning process starts, the rapping device is turned on to knock on the dust-accumulating components inside the dust collector at a preset frequency. This includes, during normal dust removal, turning on the rapping device to knock on the anode plate and cathode wire inside the dust collector at a preset frequency to shake off dry ash and reduce dust accumulation.

[0064] After the cleaning program is started, a preset delay period is set, for example, 1 minute, and then the rapping device is activated to strike the anode plate and cathode wire inside the dust collector at a preset frequency to shake off sewage and sludge, promote the cleaning progress, and improve cleaning efficiency.

[0065] After the cleaning process is completed, continue to vibrate for a preset time, such as 2 minutes, to remove residual sewage and reduce subsequent drying time.

[0066] In one embodiment provided in this application, the operating speed of the screw conveyor is matched with the amount of cleaning water sprayed, and the amount of water sprayed is positively correlated with the pressure. For example, it can be set that for every 10% increase in the amount of water sprayed, the speed of the conveyor increases by 15% to ensure efficient discharge of sewage.

[0067] In one embodiment provided in this application, the system is equipped with multiple security protection mechanisms:

[0068] If the temperature rises abnormally to ≥100℃ during the cleaning process, immediately stop the water spray and sound an alarm;

[0069] If the high-voltage power supply is unexpectedly activated, the system will forcibly disconnect the power.

[0070] In one embodiment provided in this application, the cleaning cycle is dynamically adjusted according to the production load, for example:

[0071] During high-load production (furnace gas flow rate ≥ 1000 m³ / h) 3 / h), clean once every 3 days; that is, the forced cleaning cycle is set to 72h;

[0072] During low-load production (furnace gas flow rate < 500 m³ / h) 3 The cleaning cycle is set to 168 hours, with a cleaning frequency of 168 hours per hour.

[0073] The solution provided in this application involves installing a water spraying device on the top of a dry horizontal electrostatic precipitator to periodically spray water to clean the surfaces of the anode plate and cathode wire, keeping the surfaces clean and thus ensuring dust removal efficiency.

[0074] This application provides a cleaning device for an electrostatic precipitator for yellow phosphorus furnace gas, applied to precipitator 1, see [link]. Figures 2-4The dust collector 1 includes an air inlet 2 and an air outlet 13; a screw conveyor 12 is provided below the dust collector 1; a cleaning nozzle 5 is provided at the top of the dust collector 1 and an opening is provided at the bottom so that the dust inside the dust collector 1 falls onto the screw conveyor 12.

[0075] In one embodiment provided in this application, the inlet end of the spiral ash conveyor 12 is arranged lower than the outlet end, and a near-end sewage pipe 6 and a near-end sewage pipe valve 7 are provided near the inlet end, and an ash discharge pipe 10 and an ash discharge valve 11 are provided near the outlet end. The ash discharge pipe 10 is connected to a far-end sewage pipe 9 and a far-end sewage pipe valve 8.

[0076] See Figure 2 The diagram illustrates the orientation of the screw conveyor 12, where the inlet end refers to the left end and the outlet end refers to the right end. Because the screw conveyor 12 has a lifting function, it can transport materials to the discharge end even when the left side is lower than the right side. During normal operation of conveying dry ash, the dry ash is discharged through the conveying pipe 10 at the end of the screw conveyor 12 furthest from the motor end; and a near-end drain pipe 6 and a near-end drain pipe valve 7 are installed near the motor end of the screw conveyor 12. This arrangement ensures that residual water in the screw conveyor 12 can be smoothly discharged through the near-end drain pipe 6 after each water spray, ensuring thorough drainage.

[0077] For example, the tilt angle of the screw conveyor 12 can be set to 10°.

[0078] Before the ash discharge valve 11 of the ash discharge pipe 10, a remote sewage discharge valve 8 and a remote sewage discharge pipe 9 are installed to discharge sewage that may enter the ash discharge pipe 10; the remote sewage discharge pipe 9 and the near-end sewage discharge pipe 6 are combined and enter the mud and phosphorus collection pipeline.

[0079] In one embodiment provided in this application, the cleaning nozzle 5 is supplied with water by a water spray pipe 4 located at the tail end of the dust collector 1, and the inlet end of the water delivery section of the water spray pipe 4 is positioned higher than the outlet end. See also Figure 2 The diagram shows the orientation of the water supply section of the water spray pipe 4, with the inlet end pointing to the right and the outlet end pointing to the left. This arrangement ensures that any residual water in the water spray pipe 4 can be drained away promptly after each spray.

[0080] For example, the inclination angle of the water delivery section of the water spray pipe 4 can be set to 10°. Here, the water delivery section refers to the branch pipe used to connect the various nozzles, and the overall trend is that it is lower on the left and higher on the right.

[0081] In one embodiment provided in this application, the cleaning nozzle 5 is supplied with water by a water spray pipe 4 located at the tail end of the dust collector 1. The water conveying section of the water spray pipe 4 and the screw conveyor 12 are both arranged parallel to the axis of the dust collector 1. The air inlet 2 of the dust collector 1 is arranged lower than the air outlet 13.

[0082] The dust collector 1 can be tilted directly, while the water conveying section of the water spray pipe 4 and the screw conveyor 12 are set parallel to the axis of the dust collector 1 and fixed. This setting method can not only meet the requirements of the left-low and right-high setting of the water conveying section of the water spray pipe 4 and the screw conveyor 12, but also facilitate the adjustment of the angle. Only the tilt angle of the dust collector 1 needs to be adjusted, so that the tilt angle of the water conveying section of the water spray pipe 4 and the screw conveyor 12 can be adjusted synchronously.

[0083] In one embodiment provided in this application, a water spray pipe valve 18 is provided on the water spray pipe 4 to control its opening degree; the water spray pipe 4 is connected to the cleaning nozzle 5 through a branch pipe.

[0084] Multiple cleaning nozzles 5 are provided, arranged in both length and cross-sectional directions. Therefore, multiple branch pipes are arranged in a network to connect each cleaning nozzle 5 in the water conveyance section.

[0085] In one embodiment provided in this application, the dust collector 1 has multiple anode plates 15 for dust collection arranged along its length, and multiple vertical cathode wires 16 for discharge arranged between adjacent anode plates 15; the opening is located below the anode plates 15 and the cathode wires 16.

[0086] The internal space of the dust collector 1 is composed of alternating cathode wires 16 and dust-collecting anode plates 15, i.e., an anode plate-cathode wire-anode plate structure, so that as much flue gas as possible flows through the dust collection channel, and as much dust as possible is trapped. The purified gas is discharged through the outlet. The top of the cathode wires 16 can be hung on the top of the dust collector 1, or a row of cathode wires 16 can be inserted or removed one row at a time by a rod passing through the top of the cathode wires 16 along the length direction.

[0087] The cathode wire is in the form of a needle-like wire, that is, discharge spikes are set on the metal pipe wall. The more discharge spikes there are, the better the corona discharge effect. For example, the dust collector 1 of this application is a dry horizontal electrostatic precipitator, powered by a high-voltage power supply 14. When gas containing dust particles passes through the high-voltage electric field formed between the cathode wire (also known as the corona electrode) connected to the high-voltage DC power supply and the grounded anode plate, the gas is ionized due to the corona discharge of the cathode. At this time, the negatively charged gas ions move towards the anode plate under the action of the electric field force. During the movement, they collide with dust particles, causing the dust particles to become negatively charged. The charged dust particles also move towards the anode under the action of the electric field force. After reaching the anode, they release the electrons they carry, and the dust particles are deposited on the anode plate, and the purified gas is discharged from the dust collector 1.

[0088] In one embodiment provided in this application, the cleaning nozzles 5 are arranged in multiple groups. In the cross-sectional direction, a group of cleaning nozzles 5 is arranged between every two anode plates 15, so that the spray range covers the two anode plates 15 below and the cathode line 16 between the two anode plates 15. In the length direction, a group of cleaning nozzles 5 is arranged above each cathode line 16 so that the spray range covers all cathode lines 16.

[0089] The cleaning nozzles 5 are arranged at the top of the internal space of the dust collector 1. A set of cleaning nozzles 5 is arranged between every two anode plates 15, and the sprayed water is sufficient to cover and clean both anode plates 15 and the large cathode wire 16 between the two anode plates. Cleaning nozzles 5 are also arranged on the top of the two outermost anode plates 15 inside the internal space of the dust collector 1 to ensure that the water can reach the outer side of these two anode plates. The cleaning nozzles 5 must maintain an appropriate distance from the anode plates 15 and the cathode wire 16 to prevent the distance from being too small, which would affect the normal operating voltage of the high-voltage power supply 14 and thus create an electrostatic field between the anode plates 15 and the cathode wire 16.

[0090] In one embodiment provided in this application, the inner wall of the dust collector 1 is provided with a rapping device for striking the anode plate 15 and / or cathode wire 16 to shake off dust.

[0091] In one embodiment provided in this application, the air inlet 2 and the air outlet 13 are respectively provided with an air inlet valve 3 and an air outlet valve 17 to control the opening degree of air inlet and air outlet.

[0092] In one embodiment provided in this application, the water source pressure provided by the spray pipe 4 is not less than 0.2 MPa, the water source is clean water or circulating water, and the water temperature is 10-80℃. Among them, the cleaning effect is better when the water temperature is greater than 35℃.

[0093] This application provides a cleaning device for an electrostatic precipitator for yellow phosphorus furnace gas, which can be cleaned regularly through the following steps:

[0094] Step (1): Close the air inlet valve 3, and then close the air outlet valve 17;

[0095] Step (2): Turn off the high-voltage power supply 14 and stop the power supply. When the dust collector 1 is being cleaned with water spray, it is strictly forbidden to work with the power on.

[0096] Step (3): Before turning off the high-voltage power supply 14 and starting water spraying, the temperature should be cooled down for a period of time. Only when the temperature inside the dust collector 1 drops to below 90℃ (or other set temperature) can the water spray pipe 4 be connected and the water spray pipe valve 18 be opened to start water spraying.

[0097] Step (4): Close the ash discharge valve 11 on the ash discharge pipe 10 to prevent sewage from entering the dry ash collection device; open the remote sewage discharge valve 8 on the remote sewage discharge pipe 9 to discharge sewage that may enter the ash discharge pipe 10; open the near-end sewage discharge valve 7 to discharge the cleaned sewage through the near-end sewage discharge pipe 6.

[0098] Step (5): Connect the water spray valve 18 on the water spray pipe 4 and spray water through the cleaning nozzle 5 for cleaning;

[0099] Step (6): After cleaning, close valve 18 on water spray pipe 4, close valve 8 on remote sewage pipe 9, and close valve 7 on near sewage pipe 6.

[0100] Step (7): Open the outlet valve 17 and the inlet valve 3 to introduce yellow phosphorus furnace gas. After the water on the anode plate 15 and cathode wire 16 has dried, check the furnace gas at the outlet 13. When the water vapor content is not greater than 5% (or other set values), the high-voltage power supply 14 can be turned on again and the dust collector 1 can enter normal operation.

[0101] This application provides a cleaning control device 500 for an electrostatic precipitator of yellow phosphorus furnace gas. See also... Figure 5 ,include,

[0102] The input module 501 is used to receive cleaning instructions and the internal temperature of the dust collector monitored in real time by the temperature sensor.

[0103] The control module 502 is used to sequentially cut off the furnace gas input and output and the dust collector power supply according to the signal received by the input module; it is also used to control the cleaning component to spray and clean the inside of the dust collector according to the preset pressure, water temperature and spray duration.

[0104] The judgment module 503 is used to determine whether the internal temperature of the dust collector is less than or equal to a preset safety threshold, so as to trigger the cleaning program if the result is yes.

[0105] In one embodiment provided in this application, the control module 502 further includes a screw conveyor control module 5021, which is used to keep the screw conveyor running during the cleaning process, close the ash discharge pipe to stop collecting dry ash, and open the sewage discharge pipe to collect cleaning wastewater.

[0106] In one embodiment provided in this application, the control module 502 further includes a restart module 5022, which is used to restart the furnace gas output and input to dry the inner cavity of the dust collector after cleaning is completed, receive the output humidity of the dust collector obtained by the input module 501, receive the result of the judgment module 503 judging that the output humidity is not greater than the preset humidity value, and restore the power supply to the dust collector.

[0107] In one embodiment provided in this application, the cleaning control device 500 further includes a safety monitoring module 504, which is used to confirm that the temperature ≤90°C is maintained for at least 5 minutes before the cleaning program is started.

[0108] In one embodiment provided in this application, the cleaning control device 500 further includes a cleaning command sending module 505, which is used to obtain the continuous running time of the dust collector and the dust accumulation thickness detected by the thickness sensor inside the dust collector. When the dust accumulation thickness detected by the thickness sensor reaches the dust accumulation cleaning threshold, or the continuous running time of the dust collector reaches the required cleaning time threshold, a cleaning command is issued.

[0109] In one embodiment provided in this application, the cleaning control device 500 further includes a stop cleaning command sending module 506, which is used to issue a stop cleaning command when the dust accumulation thickness detected by the thickness sensor reaches the cleaning threshold or the cleaning time reaches the cleaning threshold.

[0110] In one embodiment provided in this application, the cleaning control device 500 further includes a rapping program module 507, which is used to activate the rapping device to tap the dust accumulation components in the dust collector at a preset frequency before the cleaning program is started; or, after the cleaning program is started, after a preset period of delay, activate the rapping device to tap the dust accumulation components in the dust collector at a preset frequency; and continue rapping for a preset time after the cleaning program is completed so that residual sewage falls off.

[0111] Figure 6 This is a schematic diagram of the structure of a device according to an embodiment of this application. For example... Figure 6 As shown, device 600 includes one or more processors 601 (or processing units), and may also include one or more memories 602 coupled to the processors, and may also include a communication module 603 coupled to the processors.

[0112] The communication module 603 can be used to communicate with other devices or apparatuses, such as transmitting or receiving data and / or signals. The communication module 603 may have at least one communication module 603 for communication. The communication module 603 may include any interface necessary for communicating with other devices. Exemplarily, the communication module 603 may be a transceiver, circuit, bus, module, or other type of communication module 603.

[0113] Processor 601 may include, but is not limited to, one or more of the following: a general-purpose computer, a special-purpose computer, a microcontroller, a digital signal processor (DSP), or a controller-based multi-core controller architecture. The device may have multiple processors 601, such as application-specific integrated circuit (ASIC) chips, which are time-dependent on a clock synchronized with the main processor 601.

[0114] Memory 602 may include one or more non-volatile memories 602 and one or more volatile memories 602. Examples of non-volatile memories 602 include, but are not limited to, at least one of the following: read-only memory 602 (ROM), electrically programmable read-only memory 602 (EPROM), flash memory, hard disk, compact disc (CD), digital video disc (DVD), or other magnetic and / or optical storage. Examples of volatile memories 602 include, but are not limited to, at least one of the following: random access memory 602 (RAM), or other volatile memories 602 that do not persist during power-off periods.

[0115] A computer program includes computer-executable instructions that are executed by the associated processor 601. The program may be stored in ROM. The processor 601 can perform any suitable actions and processes by loading the program into RAM.

[0116] Possible implementations of this application can be achieved through a program, enabling the communication device to execute any of the processes discussed in the foregoing embodiments. Possible implementations of this application can also be achieved through hardware or a combination of software and hardware.

[0117] In some implementations, the program may be tangibly contained in a computer-readable storage medium, which may include in a device (such as in memory) or other storage device accessible by the device. The program may be loaded from the computer-readable storage medium into RAM for execution. The computer-readable storage medium may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc.

[0118] This application also provides a computer-readable storage medium storing computer instructions or program code thereon, which, when executed by a processor, causes the processor to perform the methods and functions involved in any of the above embodiments. A computer-readable medium can be any tangible medium that contains or stores a program for or relating to an instruction execution system, apparatus, or device. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. More detailed examples of computer-readable storage media include electrical connections with one or more wires, magnetic media (e.g., disks, floppy disks, hard disks, magnetic tapes, magnetic storage devices), optical media (e.g., optical storage devices, DVDs), semiconductor media (e.g., solid-state drives), random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), or any suitable combination thereof.

[0119] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. Embodiments of this application also provide at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. This computer program product includes one or more computer-executable instructions, such as instructions included in a program module, which execute in a device on a target's real or virtual processor to perform the processes, methods, and functions involved in any of the above embodiments. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0120] This application also proposes a computer program product, including a computer program or instructions that, when run on a computer, cause the computer to perform the processes, methods, and functions described in the above embodiments. Typically, program modules include routines, programs, libraries, objects, classes, components, data structures, etc., that perform specific tasks or implement specific abstract data types. In various embodiments, the functionality of program modules can be combined or divided as needed. The machine-executable instructions for the program modules can be executed locally or in a distributed device. In a distributed device, the program modules can reside in both local and remote storage media.

[0121] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some aspects can be implemented in hardware, while others can be implemented in firmware or software, which can be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of this disclosure are shown and described as block diagrams, flowcharts, or represented using some other illustration, it should be understood that the blocks, apparatuses, systems, techniques, or methods described herein can be implemented as, as non-limiting examples, in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.

[0122] It should be noted that although embodiments of this application have been described above with reference to the accompanying drawings, these embodiments are not independent of each other, and they can be combined to obtain other embodiments. The methods, situations, categories, and classifications of embodiments in this application are only for the convenience of description and should not constitute a special limitation. Various methods, categories, situations, and features in embodiments can be combined with each other if logically consistent. The various embodiments of this application can be arbitrarily combined to achieve different technical effects. The embodiments of this application will not list various combinations.

[0123] Furthermore, although the operation of the methods of this disclosure is described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all of the operations shown must be performed to achieve the desired result. Rather, the steps depicted in the flowcharts may be performed in a different order. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps. It should also be noted that the features and functions of two or more devices according to this disclosure may be embodied in one device. Conversely, the features and functions of one device described above may be further divided and embodied by multiple devices.

[0124] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0125] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas, characterized in that, Includes the following steps: Upon receiving the cleaning command, the furnace gas input and output, and the dust collector power supply are sequentially cut off. The system receives real-time monitoring data of the dust collector's internal temperature from a temperature sensor. When the internal temperature of the dust collector is less than or equal to a preset safety threshold, the cleaning program is triggered. The cleaning components are controlled to spray and clean the inside of the dust collector according to preset pressure, water temperature and spray duration.

2. The cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas according to claim 1, characterized in that, A screw conveyor is installed below the dust collector to receive dry ash and wastewater. The screw conveyor includes an ash discharge pipe connected to a dry ash collection device and a sewage discharge pipe connected to a wastewater collection device. The method also includes... During the cleaning process, keep the screw conveyor running, close the ash discharge pipe to stop collecting dry ash, and open the sewage discharge pipe to collect the cleaning wastewater.

3. The cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas according to claim 1, characterized in that, After cleaning, restart the furnace gas output and input to dry the dust collector's inner cavity, obtain the dust collector's output humidity, and restore the dust collector's power supply after determining that the output humidity is not greater than the preset humidity value.

4. The cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas according to claim 1, characterized in that, The preset safety threshold is 90℃, and the temperature must be maintained at ≤90℃ for at least 5 minutes before the cleaning program is started.

5. The cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas according to claim 1, characterized in that, The system acquires the continuous operating time of the dust collector and the dust accumulation thickness detected by the thickness sensor inside the dust collector. When the dust accumulation thickness detected by the thickness sensor reaches the dust cleaning threshold, or when the continuous operating time of the dust collector reaches the required cleaning time threshold, a cleaning command is issued.

6. The cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas according to claim 5, characterized in that, When the thickness of the accumulated dust detected by the thickness sensor reaches the cleaning threshold, or when the cleaning time reaches the cleaning threshold, a stop cleaning command is issued.

7. The cleaning method for an electrostatic precipitator for yellow phosphorus furnace gas according to claim 1, characterized in that, The method also includes a vibration process, which includes, Before starting the cleaning process, turn on the rapping device to tap the dust-accumulating components inside the dust collector at a preset frequency; or, After the cleaning program starts, a preset delay period is applied, and the rapping device is activated to strike the dust-accumulating components inside the dust collector at a preset frequency. After the cleaning process is completed, continue vibrating for a preset time to remove any remaining wastewater.

8. A cleaning control device for an electrostatic precipitator for yellow phosphorus furnace gas, characterized in that, include, The input module is used to receive cleaning commands and the internal temperature of the dust collector monitored in real time by a temperature sensor. The control module is used to sequentially cut off the furnace gas input and output and the dust collector power supply according to the signals received by the input module; it is also used to control the cleaning components to spray and clean the inside of the dust collector according to preset pressure, water temperature and spray duration. The judgment module is used to determine whether the internal temperature of the dust collector is less than or equal to a preset safety threshold, so as to trigger the cleaning program if the result is yes.

9. A device, characterized in that, include: processor; And a memory arranged to store computer-executable instructions, which, when executed, cause the processor to perform the method of any one of claims 1 to 7.

10. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the method described in any one of claims 1 to 7.

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