Method and system for determining ammonium sulfate in ammonia-process flue gas desulfurization fog drops

Abstract

The invention relates to a method and system for determining ammonium sulfate in ammonia process flue gas desulfurization fog drops, and relates to the technical field of ammonium sulfate determination, and the system comprises a gas inlet pipeline, a pretreatment unit, a determination unit and a data processing unit. Through combination of the gas inlet pipeline and the pretreatment unit, multi-stage pretreatment of flue gas can be achieved, it is ensured that the flue gas reaches the optimal state before measurement, the influence of external factors on the measurement result is reduced, meanwhile, through combined use of the ultraviolet spectrograph and the infrared spectrograph arranged in the measurement unit, the measurement accuracy is improved, and the measurement accuracy is improved. The ammonium sulfate concentration measurement is more accurate and reliable, the design of the data processing unit not only improves the measurement precision, but also simplifies the operation process, reduces the personal error and improves the working efficiency, and meanwhile, the flue gas power assisting device arranged in the gas inlet pipeline can assist the flue gas entering rate, so that the energy consumption is reduced, and the energy consumption is reduced. And reciprocating contact filtering of the entering smoke can be realized in a linkage manner, so that the subsequent smoke filtering quality and effect are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of ammonium sulfate determination, and in particular to a method and system for determining ammonium sulfate in ammonia flue gas desulfurization droplets. Background Art

[0002] At present, with the increasingly stringent environmental protection regulations, coal-fired power plants and other industrial facilities must carry out effective desulfurization treatment before discharging flue gas. The commonly used desulfurization methods include wet desulfurization, dry desulfurization and semi-dry desulfurization. Among them, ammonia flue gas desulfurization is widely used due to its high efficiency and economy. However, in the actual operation process, the droplets produced by desulfurization contain a large amount of ammonium sulfate, which not only causes corrosion and pollution to subsequent equipment, but also affects the stable operation of the entire system. Therefore, accurately measuring the ammonium sulfate content in the droplets is of great significance to ensure the long-term reliable operation of the system.

[0003] Regarding the above-mentioned related technologies, the following methods are usually used in the prior art: offline sampling and analysis method, online laser scattering method and conductivity method, etc., to carry out ammonium sulfate concentration measurement and monitoring activities. At the same time, a newly disclosed patent technology proposes a method based on the combined measurement of ultraviolet spectroscopy and infrared spectroscopy. This method integrates an ultraviolet spectrometer and an infrared spectrometer to more accurately measure the concentration of ammonium sulfate.

[0004] Although the above methods have their own characteristics, they still have obvious shortcomings in practical applications. The existing measurement methods are either unable to achieve real-time monitoring, resulting in the inability to adjust the desulfurization process parameters in a timely manner; or are greatly affected by environmental factors and it is difficult to ensure measurement accuracy. In addition, these methods also have problems such as complex operation, high maintenance cost, and low reliability, which seriously limit their widespread application in actual industry.

[0005] Therefore, a method and system for determining ammonium sulfate in ammonia flue gas desulfurization droplets are proposed to efficiently pretreat the flue gas to achieve accurate and reliable determination of the concentration of ammonium sulfate. Summary of the invention

[0006] The purpose of the present application is to provide a method and system for determining ammonium sulfate in ammonia flue gas desulfurization droplets to solve the problems raised in the above-mentioned background technology.

[0007] The present application provides a method and system for determining ammonium sulfate in ammonia flue gas desulfurization droplets, which adopts the following technical solution: it includes an air intake pipeline, the outlet end of the air intake pipeline is connected to a pretreatment unit, the output end of the pretreatment unit is connected to the input end of the determination unit, and the output end of the determination unit is connected to the output end of the data processing unit.

[0008] By adopting the above technical scheme, namely, the air intake pipeline, the pretreatment unit, the measurement unit and the data processing unit can constitute a measurement system for ammonium sulfate in the ammonia flue gas desulfurization droplets, thereby realizing multi-stage pretreatment of flue gas, reducing the influence of external factors on the measurement results, and ensuring the accuracy of the measured data, so that the whole system has a high degree of automation and intelligence, and is suitable for large-scale promotion and application.

[0009] Preferably, the air intake pipeline comprises an inlet flange, a pipeline and a filter; the inlet flange is fixed to the inlet end of the pipeline, and a filter is installed inside the pipeline.

[0010] By adopting the above technical solution, when the flue gas enters, it can be efficiently filtered to reduce the particulate impurities inside the flue gas and improve the accuracy of subsequent measurements.

[0011] Preferably, the pretreatment unit comprises a condenser and a heater, the condenser is installed inside the pipeline, and a heater is provided downstream of the condenser.

[0012] By adopting the above technical solution, i.e. the combination of a condenser and a heater, the filtered flue gas can be condensed and heated, thereby avoiding measurement errors caused by moisture interference in subsequent measurement processes.

[0013] Preferably, the measuring unit comprises an ultraviolet spectrometer and an infrared spectrometer, and the ultraviolet spectrometer and the infrared spectrometer are respectively installed on the vertical branch pipe at the rear side of the heater, and receive the flue gas sample through an optical fiber transmission device.

[0014] By adopting the above technical solution, that is, by combining an ultraviolet spectrometer with an infrared spectrometer, the absorbance of sulfate ions and the vibration frequency of ammonium ions can be measured, providing accurate data for subsequent measurements.

[0015] Preferably, the data processing unit includes a signal amplifier, a data processor and a display; The signal amplifier is used to amplify and filter the received electrical signal to eliminate noise interference; The data processor is used for accurate calculation of the total concentration of ammonium sulfate; The display is used to visually display the measured data and show the trend curve for user reference.

[0016] By adopting the above technical solution, the amplification, filtering and noise interference elimination of electrical signals can be efficiently achieved, and the total concentration value of ammonium sulfate can be calculated through the built-in algorithm of the data processor, and a trend curve chart can be generated to provide a reference for users.

[0017] Preferably, a stainless steel filter is further provided inside the pipe, and the overall pore size of the stainless steel filter is 5 μm, and a notch begins to form at the lower end of one side of the pipe.

[0018] By adopting the above technical solution, that is, using stainless steel filters with different pore sizes, we can adapt to different working conditions and meet the flue gas filtration needs in different scenarios.

[0019] The present application also provides a method for determining ammonium sulfate in ammonia flue gas desulfurization droplets, comprising the following steps: S1. Flue gas pretreatment; S2, spectral data acquisition and data processing; S3. Concentration calculation and mapping.

[0020] Preferably, the step S1 specifically includes the following steps: S11, introducing flue gas through the air intake pipeline; S12, removing impurities and moisture through filters and condensers; S13. Maintaining a suitable temperature by means of a heater.

[0021] Preferably, the step S2 specifically includes the following steps: S21. Using an ultraviolet spectrometer and an infrared spectrometer to measure the spectral characteristics of sulfate ions and ammonium ions in the flue gas respectively; S22, performing signal amplification, filtering and algorithm processing through the signal amplifier and data processor inside the data processing unit to extract characteristic spectrum information.

[0022] By adopting the above technical solution, that is, in cooperation with the ultraviolet spectrometer and the infrared spectrometer, the spectral characteristics of sulfate ions and ammonium ions in the flue gas can be quickly measured, and the spectral information can be extracted based on the measured data to provide data support for subsequent mapping.

[0023] Preferably, step S3 specifically includes the following steps: S31, the data processor calculates the total concentration value of ammonium sulfate according to the extracted characteristic spectrum information and in combination with a preset calibration curve or model; S32. Real-time display is performed on the display, while historical data is recorded and a trend curve is generated for user reference.

[0024] By adopting the above technical solution, efficient measurement and mapping of measurement data can be achieved, and the generated trend curve can be used to provide a reference for users. In this way, users can intuitively understand the ammonium sulfate content based on the curve, providing long-term and reliable protection for the system.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application realizes the combination of the ammonium sulfate determination system by setting up an air intake pipeline, a pretreatment unit, a determination unit and a data processing unit. Through the combination of the air intake pipeline and the pretreatment unit, multi-stage pretreatment of the flue gas can be realized to ensure that the flue gas reaches the optimal state before the determination, and reduce the influence of external factors on the determination results. At the same time, the combined use of the ultraviolet spectrometer and the infrared spectrometer provided in the determination unit makes the concentration determination of ammonium sulfate more accurate and reliable, and the design of the data processing unit not only improves the measurement accuracy, but also simplifies the operation process, reduces human errors, and improves work efficiency; 2. The air intake pipeline of the present application is also provided with a flue gas assisting device, that is, through the setting of the suction component and the adsorption component, the wind assisting of the flue gas entry rate can be performed to accelerate the subsequent pre-treatment efficiency. At the same time, during the assisting process, the linkage operation of the adsorption component can be realized synchronously to pre-reciprocating contact filtration of the incoming flue gas to ensure the quality and effect of subsequent flue gas filtration; 3. The present application provides an air intake component, that is, the vertical pipe can realize the meshing transmission of the first bevel gear and the second bevel gear, so as to rotate the rotating rod in the horizontal installation state. As the rotating rod rotates, the blades installed on the outside of the rotating rod will rotate rapidly, and a certain suction force will be generated at the air intake end of the air intake pipe to accelerate the efficiency of the flue gas entering the filtration. When the rotating rod rotates, the brush strip installed on the other side of the outside can also be driven to brush and clean the filtering surface of the stainless steel filter screen, so as to conveniently clean the attached particles, thereby ensuring the filtering effect of the stainless steel filter screen and at the same time ensuring the subsequent flue gas filtration flow rate and reducing blockage problems.

[0026] 4. The present application is provided with an adsorption component, that is, when the rotating rod rotates, the synchronous rotation of the relatively connected rotating drum on the left side can be realized. When the rotating drum rotates, the movable tube connected to the transmission groove provided on the outside of the rotating drum through the pins provided on both sides inside will perform left and right reciprocating movements under the transmission of the pins and the transmission groove on both sides. In this way, the docking rod docked at the left side of the movable tube will realize the reciprocating push and pull of the disc provided at the air inlet end of the pipeline. In this way, the screens equidistantly arranged on each side of the disc can perform intermittent impact contact filtration activities of the flue gas to realize the pre-filtration treatment of the incoming flue gas, reduce the particulate impurities in the flue gas, and improve the quality and effect of subsequent flue gas filtration treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the system structure of this application; Figure 2 It is a schematic diagram of the intake pipeline structure of this application; Figure 3 It is a schematic diagram of the structure of the pre-processing unit of this application; Figure 4 It is a schematic diagram of the structure of the determination unit of this application; Figure 5It is a schematic diagram of the structure of the data processing unit of this application; Figure 6 It is a schematic diagram of the process flow of this application method; Figure 7 This is a schematic diagram of the flue gas pretreatment process of this application; Figure 8 It is a schematic diagram of the spectrum data collection and data processing process of this application; Fig. 9 It is a schematic diagram of the concentration calculation and mapping process of this application; Fig.10 It is a schematic diagram of the intake pipeline structure of this application; Fig.11 This is a schematic diagram of the internal structure of the intake pipe of the present application; Fig.12 This is a schematic diagram of the front view structure of the suction component and the adsorption component of the present application; Fig.13 This is a schematic diagram of the front view of the structure of the air intake assembly of the present application; Fig.14 This is a schematic diagram of the front view structure of the adsorption component of the present application; Fig.15 It is a schematic diagram of the three-dimensional combination structure of the disc and the screen of the present application.

[0028] Explanation of reference numerals: 1. air intake pipe; 11. inlet flange; 12. pipe; 13. filter; 14. stainless steel filter; 15. flue gas booster; 151. motor; 152. vertical pipe; 153. suction assembly; 1531. first bevel gear; 1532. second bevel gear; 1533. rotating rod; 1534. limiting pipe; 1535. blade; 1536. brush strip; 154. adsorption assembly; 1541. rotating drum ; 1542, protective tube; 1543, transmission groove; 1544, moving tube; 1545, docking rod; 1546, bracket; 1547, disc; 1548, sieve; 16, notch; 2, pretreatment unit; 21, condenser; 22, heater; 3, measurement unit; 31, ultraviolet spectrometer; 32, infrared spectrometer; 4, data processing unit; 41, signal amplifier; 42, data processor; 43, display. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Fig.15 , further details of this application are given.

[0030] A method and system for determining ammonium sulfate in ammonia flue gas desulfurization droplets, referring to Figure 1 , including an air intake pipeline 1, the outlet end of the air intake pipeline 1 is connected to the preprocessing unit 2, the output end of the preprocessing unit 2 is connected to the input end of the measuring unit 3, and the output end of the measuring unit 3 is connected to the output end of the data processing unit 4.

[0031] Specifically, the air intake pipeline 1, the pretreatment unit 2, the measurement unit 3 and the data processing unit 4 can constitute a measurement system for ammonium sulfate in ammonia flue gas desulfurization droplets, thereby realizing multi-stage pretreatment of flue gas, reducing the influence of external factors on the measurement results, and ensuring the accuracy of the measured data, so that the whole system has a high degree of automation and intelligence, and is suitable for large-scale promotion and application.

[0032] Among them, refer to Figure 2 The air intake pipeline 1 includes an inlet flange 11, a pipe 12 and a filter 13. The inlet flange 11 is fixed to the inlet end of the pipe 12. The filter 13 is installed inside the pipe 12. The inlet flange 11 is made of carbon steel, resistant to high temperature and high pressure, with a size of DN80, and is used to connect with the flue outlet flange. At the same time, the inlet flange 11 can also be made of other materials, such as cast iron or alloy steel, to adapt to different working conditions.

[0033] Specifically, when the flue gas enters, it can be efficiently filtered to reduce particulate impurities inside the flue gas and improve the accuracy of subsequent measurements.

[0034] A stainless steel filter screen 14 is provided inside the pipe 12 , and the overall pore size of the stainless steel filter screen 14 is 5 μm, and can be adjusted according to actual needs, such as selecting a 3 μm or 10 μm filter screen, and a notch 16 is formed at the lower end of one side of the pipe 12 .

[0035] Specifically, the stainless steel filter screens 14 with different apertures are used to adapt to different working conditions and meet the smoke filtering requirements in different scenarios.

[0036] Among them, refer to Figure 3 The pretreatment unit 2 includes a condenser 21 and a heater 22 . The condenser 21 is installed inside the pipeline 12 , and the heater 22 is provided downstream of the condenser 21 .

[0037] Specifically, the combination of the condenser 21 and the heater 22 can condense and heat the filtered flue gas, thereby avoiding measurement errors caused by moisture interference in subsequent measurement processes.

[0038] Among them, the condenser 21 is a copper heat exchanger with high heat transfer efficiency and a designed flow rate of 100m³ / h. At the same time, the heater 22 can use an electric heating rod or other forms of heating elements, such as a graphene heating sheet, to improve the heating efficiency and uniformity. The power can also be adjusted according to actual needs, such as 1.5kW or 2kW, to adapt to a larger flue gas flow rate and a faster heating rate.

[0039] Among them, refer to Figure 4The measuring unit 3 includes an ultraviolet spectrometer 31 and an infrared spectrometer 32. The ultraviolet spectrometer 31 and the infrared spectrometer 32 are respectively installed on the vertical branch pipes at the rear side of the heater 22, and receive the flue gas sample through the optical fiber transmission device.

[0040] Specifically, the absorbance of sulfate ions and the vibration frequency of ammonium ions can be measured by the combination of the ultraviolet spectrometer 31 and the infrared spectrometer 32, thereby providing accurate data for subsequent measurements.

[0041] Among them, refer to Figure 5 and Fig.15 , the data processing unit 4 includes a signal amplifier 41, a data processor 42 and a display 43; The signal amplifier 41 is used to amplify and filter the received electrical signal to eliminate noise interference, and the gain adjustment range of the signal amplifier 41 can be expanded to 10 4 -10 7 times, with a bandwidth of DC-10 MHz to better handle complex electrical signals; The data processor 42 is used for accurate calculation of the total concentration value of ammonium sulfate, and the data processor 42 is based on a more advanced ARM architecture or X86 architecture, with a memory capacity of 8GB and a storage space of 256GB to support more data processing and storage requirements; The display 43 is used to visually display the measured data and display the trend curve for the user's reference.

[0042] Specifically, the amplification and filtering of the electrical signal and the elimination of noise interference are efficiently realized, and the total concentration value of ammonium sulfate is calculated through the built-in algorithm of the data processor 42, and a trend curve is generated to provide a reference for the user. The specific data is as follows Figure 1 As shown,

[0043] Table 1: Comparison of total ammonium sulfate concentration test data Among them, the error comparison is: Traditional technology: using chemical titration (such as using barium chloride to precipitate sulfate + Kjeldahl method), the error range is -3.2% to -2.4%, mainly due to manual operation (end point judgment deviation, reagent purity) and complex pre-treatment steps.

[0044] New technology: Based on the calibration model of UV spectrometer 31, infrared spectrometer 32 and data processor 42, the error range is ±0.04% to ±0.31%, and the error is significantly reduced, mainly relying on automated signal processing and algorithm optimization; Detection efficiency comparison: Traditional technology: Single sample testing takes 45–6 minutes and requires manual preparation of reagents and step-by-step operations.

[0045] New technology: Single sample testing takes 3 minutes (including preprocessing + spectral analysis + algorithm calculation), and the entire process is automated.

[0046] On the other hand, refer to Figure 6 The present application also provides a method for determining ammonium sulfate in ammonia flue gas desulfurization droplets, comprising the following steps: S1. Flue gas pretreatment; S2, spectral data acquisition and data processing; S3. Concentration calculation and mapping.

[0047] Among them, refer to Figure 7 , step S1 specifically includes the following steps: S11, introducing flue gas through the air intake pipe 1; S12, removing impurities and moisture through the filter 13 and the condenser 21; S13, maintaining a suitable temperature through the heater 22.

[0048] Among them, refer to Figure 8 , step S2 specifically includes the following steps: S21, using an ultraviolet spectrometer 31 and an infrared spectrometer 32 to respectively measure the spectral characteristics of sulfate ions and ammonium ions in the flue gas; S22, performing signal amplification, filtering and algorithm processing through the signal amplifier 41 and the data processor 42 inside the data processing unit 4 to extract characteristic spectrum information.

[0049] Specifically, with the cooperation of the ultraviolet spectrometer 31 and the infrared spectrometer 32, the spectral characteristics of sulfate ions and ammonium ions in the flue gas can be quickly measured, and the spectral information can be extracted based on the measured data to provide data support for subsequent mapping.

[0050] Among them, refer to Fig. 9 , step S3 specifically includes the following steps: S31, the data processor 42 calculates the total concentration value of ammonium sulfate based on the extracted characteristic spectrum information and in combination with a preset calibration curve or model; S32, display in real time through the display 43, record historical data at the same time, and generate a trend curve for user reference.

[0051] Specifically, it can realize efficient measurement and mapping of measurement data, and provide reference for users through the generated trend curve chart. In this way, users can intuitively understand the ammonium sulfate content according to the curve chart, providing long-term and reliable protection for the system.

[0052] On the other hand, referring to Fig.10 , Fig.11 and Fig.12 In the present application, the air intake pipeline 1 also includes a smoke booster device 15, which includes a motor 151, a vertical pipe 152, an air suction component 153 and an adsorption component 154. The motor 151 is installed at the upper end of the pipeline 12, and the bottom output end of the motor 151 is connected to the vertical pipe 152, and the vertical pipe 152 is vertically rotatably installed at the upper end of the pipeline 12. The lower end of the vertical pipe 152 is connected to the air suction component 153, and the air suction component 153 is installed at the air intake end inside the pipeline 12, and the adsorption component 154 is connected to the left side of the air suction component 153.

[0053] Reference Fig.13 The air suction component 153 includes a first bevel gear 1531, a second bevel gear 1532, a rotating rod 1533, a limiting tube 1534, a blade 1535 and a brush strip 1536. The first bevel gear 1531 is connected to the lower end of the vertical tube 152. The lower left end of the first bevel gear 1531 is meshed and connected with the second bevel gear 1532. The middle part of the second bevel gear 1532 is tightly connected to the rotating rod 1533. The outer side of the right end of the rotating rod 1533 is limitedly connected to the limiting tube 1534, and the limiting tube 1534 is connected to the middle part of the stainless steel filter screen 14. A blade 1535 is installed on the outer side of the middle part of the rotating rod 1533. A brush strip 1536 is arranged on the right side of the blade 1535. The brush strip 1536 is locked and connected with the outer bolts of the rotating rod 1533, and the brush strip 1536 is against the filtering surface of the stainless steel filter screen 14.

[0054] Reference Fig.14 and Fig.15 The adsorption assembly 154 includes a rotating drum 1541, a protective drum 1542, a transmission groove 1543, a moving tube 1544, a docking rod 1545, a bracket 1546, a disc 1547 and a screen 1548. The rotating drum 1541 is fixedly connected to the outer side of the left end of the rotating rod 1533. The rotating drum 1541 is rotatably installed on the right side of the protective drum 1542. A transmission groove 1543 begins to be provided on the outer side of the rotating drum 1541, and the transmission groove 1543 is opened in the shape of a circulating groove as a whole. A moving tube 1544 is sleeved on the outer end of the left side of the rotating drum 1541. The upper and lower ends of the right side of the moving tube 1544 are threadedly fastened with pins, and the moving tube 1544 passes through the right side The pins arranged at the upper and lower ends are connected to the transmission groove 1543 provided on the outer side of the rotating drum 1541, the middle part of the left side of the moving tube 1544 is fixedly connected to the docking rod 1545, the docking rod 1545 is laterally plugged into the middle part of the left side of the protective tube 1542, and the outer end of the protective tube 1542 is fixedly connected to the upper end of the bracket 1546, the left side of the docking rod 1545 is locked and docked with the disc 1547, and the inside of the disc 1547 is equidistantly equipped with screens 1548, the screens 1548 are equidistantly arranged in a ring shape along the inside of the disc 1547, and the screens 1548 are all arranged in an arc-shaped mesh, and the screens 1548 are connected to the disc 1547 by bolts.

[0055] The implementation principle of the embodiment of the present application is: After the air intake pipe 1 is connected to the external exhaust pipe through the inlet flange 11 provided inside, the flue gas can enter the pipe 12 to pass through the stainless steel filter 14 provided inside the pipe 12 to intercept the larger particles inside the flue gas, and the filter 13 provided inside the pipe 12 is used to further remove the fine particles in the flue gas, so as to ensure that the flue gas entering the system is clean and free of impurities; After the flue gas filtering process is completed, the flue gas will enter the condenser 21 to effectively remove the moisture in the flue gas, avoiding the measurement error caused by the moisture interference in the subsequent measurement process. At the same time, the flue gas discharged from the output end of the condenser 21 can then enter the heater 22, and the flue gas is heated by the resistance wire to maintain the temperature of about 45°C, avoiding the evaporation of moisture again, so that the flue gas can flow stably within the set temperature range. In this way, multi-stage pretreatment can be achieved to ensure that the flue gas reaches the best state before measurement, reducing the influence of external factors on the measurement results; When the flue gas completes the multi-stage pretreatment activities and enters the measuring unit 3, the combined measurement of the ultraviolet spectrometer 31 and the infrared spectrometer 32 can realize the accurate measurement of the absorbance of sulfate ions and the vibration frequency of ammonium ions, and the measured data will be synchronously transmitted to the data processing unit 4. Through the combination of the signal amplifier 41 and the data processor 42, the data electrical signal amplification, filtering and noise interference elimination activities are realized, making the data processing more accurate and reliable. In this way, the data processor 42 calculates the total concentration value of ammonium sulfate through the built-in algorithm and displays it on the display 43, so that the user can intuitively understand the total concentration value of ammonium sulfate. At the same time, the data processing unit 4 can also record historical data and generate a trend curve for user reference. Therefore, the combined use of the ultraviolet spectrometer 31 and the infrared spectrometer 32 makes the concentration determination of ammonium sulfate more accurate and reliable. The design of the data processing unit 4 not only improves the measurement accuracy, but also simplifies the operation process, reduces human errors, and improves work efficiency. In this way, the entire system has a high degree of automation and intelligence, which is suitable for large-scale promotion and application. When the flue gas enters the air intake pipe 1 and filters the particles inside the flue gas, in order to speed up the flue gas flow rate, the motor 151 provided at the upper end of the driving pipe 12 can be driven to rotate the vertical pipe 152 connected to the bottom output end. As the vertical pipe 152 rotates, the first bevel gear 1531 installed at the lower end of the vertical pipe 152 will rotate synchronously, and thereby mesh with the second bevel gear 1532 connected to the lower end on the left side of the transmission. In this way, the second bevel gear 1532 will rotate the rotating rod 1533 connected in the middle, and the rotating rod 1533 rotates to connect the blades 1535 on the outside. The fast rotation makes the air inlet end of the pipe 12 have greater suction force, speeds up the efficiency of smoke entry, and makes the smoke quickly filter the large and small particles inside. At the same time, the brush bar 1536 installed on the outside of the rotating rod 1533 and opposite to the blade 1535 will rotate synchronously to assist in brushing and cleaning the external filter surface of the stainless steel filter 14, reduce the adhesion of larger particles, and affect the smoke flow rate. The scraped impurity particles will be discharged from the notch 16 opened on one side of the lower end of the pipe 12, thereby achieving smoke intake assistance, accelerating the flow rate, and improving the subsequent filtration efficiency. During the rotation of the rotating rod 1533, the rotating drum 1541 docked at the left outer end of the rotating rod 1533 will rotate synchronously therewith. During the rotation of the rotating drum 1541, the moving tube 1544 connected to the transmission groove 1543 provided on the outside of the rotating drum 1541 through the pins provided at the upper and lower ends, is driven by the transmission groove 1543 in a rotating state and the pins on both sides to make the moving tube 1544 as a whole move back and forth along the outside of the rotating drum 1541. In this way, the docking rod 1545 docked at the left side of the moving tube 1544 and laterally plugged into the middle of the left side of the protective tube 1542 will realize the left and right reciprocating push and pull of the disk 1547 connected on the left side. Driven by the disc 1547, the contact time between the screens 1548 installed at various locations inside and the incoming flue gas is accelerated during the reciprocating movement, so that the screens 1548 installed at various locations can achieve preliminary filtering treatment on the incoming flue gas, so as to pre-reduce the particles carried inside the flue gas and ensure the quality of flue gas filtration by the subsequent stainless steel filter 14 and the filter 13. Since the screen 1548 and the disc 1547 are threadedly locked and connected with each other by bolts, when replacing the screen 1548, there is no need for too many cumbersome steps to realize the disassembly, assembly and replacement of the screen 1548, thereby driving the pre-filtration treatment of the incoming flue gas and enhancing the subsequent filtration quality and effect.

[0056] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A system for measuring ammonium sulfate in ammonia flue gas desulfurization droplets, characterized in that: It comprises an air intake pipeline (1), wherein the outlet end of the air intake pipeline (1) is connected to a pre-processing unit (2), the output end of the pre-processing unit (2) is connected to an input end of a measuring unit (3), and the output end of the measuring unit (3) is connected to an output end of a data processing unit (4).

2. The system for measuring ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 1, characterized in that: The air intake pipeline (1) comprises an inlet flange (11), a pipeline (12) and a filter (13); the inlet flange (11) is fixed to an inlet end of the pipeline (12); and the filter (13) is installed inside the pipeline (12).

3. The system for measuring ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 1, characterized in that: The pretreatment unit (2) comprises a condenser (21) and a heater (22); the condenser (21) is installed inside the pipeline (12); and the heater (22) is provided downstream of the condenser (21).

4. The system for measuring ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 1, characterized in that: The measuring unit (3) comprises an ultraviolet spectrometer (31) and an infrared spectrometer (32). The ultraviolet spectrometer (31) and the infrared spectrometer (32) are respectively installed on the vertical branch pipe at the rear side of the heater (22) and receive the flue gas sample through an optical fiber transmission device.

5. The system for measuring ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 1, characterized in that: The data processing unit (4) comprises a signal amplifier (41), a data processor (42) and a display (43); The signal amplifier (41) is used to amplify and filter the received electrical signal to eliminate noise interference; The data processor (42) is used for accurately calculating the total concentration value of ammonium sulfate; The display (43) is used to visually display the measured data and display the trend curve for user reference.

6. The system for measuring ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 2, characterized in that: A stainless steel filter screen (14) is also provided inside the pipe (12), and the overall pore size of the stainless steel filter screen (14) is 5 μm, and a notch (16) is formed at the lower end of one side of the pipe (12).

7. A method for determining ammonium sulfate in ammonia flue gas desulfurization droplets, according to a system for determining ammonium sulfate in ammonia flue gas desulfurization droplets according to any one of claims 1 to 6, characterized in that: The steps include: S1. Flue gas pretreatment; S2, spectral data acquisition and data processing; S3. Concentration calculation and mapping.

8. The method for determining ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 7, characterized in that: The step S1 specifically includes the following steps: S11, introducing flue gas through the air intake pipe (1); S12, removing impurities and moisture through a filter (13) and a condenser (21); S13, maintaining a suitable temperature through the heater (22).

9. The method for determining ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 7, characterized in that: The step S2 specifically includes the following steps: S21, using an ultraviolet spectrometer (31) and an infrared spectrometer (32) to respectively measure the spectral characteristics of sulfate ions and ammonium ions in the flue gas; S22, performing signal amplification, filtering and algorithm processing through the signal amplifier (41) and the data processor (42) inside the data processing unit (4) to extract characteristic spectrum information.

10. The method for determining ammonium sulfate in ammonia flue gas desulfurization droplets according to claim 7, characterized in that: The step S3 specifically includes the following steps: S31, the data processor (42) calculates the total concentration value of ammonium sulfate based on the extracted characteristic spectrum information and in combination with a preset calibration curve or model; S32, displaying in real time through the display (43), recording historical data, and generating a trend curve for user reference.

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