An on-line monitoring device for stationary sources of condensable particulate matter and method of use

By integrating devices for particulate matter classification, heating, condensation, and atomization, online monitoring of the mass concentration of condensable particulate matter from stationary sources was achieved. This solved the problems of long detection time and cumbersome procedures in existing technologies, avoided SO2 gas interference, and realized efficient particulate matter monitoring.

CN117129392BActive Publication Date: 2025-10-21FUDAN UNIVERSITY
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Patent Information

Application Number
CN202311047042.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-20
Publication Date
2025-10-21
Estimated Expiration
2043-08-20

AI Technical Summary

Technical Problem

Existing technologies cannot effectively address the issue of online monitoring of the mass concentration of condensable particulate matter from stationary sources, and the detection process is time-consuming and cumbersome.

Method used

The system employs a particulate matter classification device, pipeline heating device, reflux collision condenser tube, water cooling radiator, semiconductor refrigeration chip, heat dissipation water radiator, peristaltic pump, gas flow meter, air extraction device, distributor, collection net rope, atomizing device, drying device, particulate matter mass concentration sensor, air purification device, air particulate matter filter device, and air supply device to achieve online monitoring of condensable particulate matter mass concentration.

Benefits of technology

It enables online monitoring of the mass concentration of condensable particulate matter, avoids SO2 gas interference, simulates the process of flue gas condensing into particulate matter after actual emission, and has a short detection time.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application belongs to the field of pollution source monitoring, and particularly relates to a fixed source condensable particulate matter online monitoring device and a use method. The online monitoring device comprises a particulate matter grading device, a pipeline heating device, a backflow collision type condenser pipe, a first water cooling row, a second water cooling row, a semiconductor refrigeration sheet, a heat dissipation water row, a peristaltic pump, a gas flow meter, an air extraction device, a flow divider, a collection net rope, an atomization device, a drying device, a particulate matter mass concentration sensor, an air purification device, an air particulate matter filtering device and a gas supply device. The total particulate matter in flue gas is calculated, the filterable particulate matter mass concentration measured by a CEMS flue gas emission continuous monitoring system is obtained, and then the difference is calculated to obtain the condensable particulate matter. The present application can avoid the interference of SO2 and other gases in the condensable particulate matter, and can simulate the condensation of flue gas into particulate matter after actual emission, and the drying process in the atmospheric environment diffusion, and can be widely used in the online monitoring of the condensable particulate matter of fixed pollution sources.
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Description

Technical Field

[0001] The present invention belongs to the field of testing technology, and specifically relates to an online monitoring device for fixed-source condensable particulate matter and a method for using the device. Background Art

[0002] Particulate matter emitted from stationary sources includes not only filterable particulate matter in the form of liquid or solid particles, but also particulate matter that is gaseous at flue temperature and quickly condenses into solid or liquid particles after being discharged from the flue into the atmosphere.

[0003] The most widely used sampling device and method for stationary source condensable particulate matter (CPM) is Method 202, recommended by the United States Environmental Protection Agency (US EPA). First, a PM2.5 cutting head and filter membrane are used to remove filterable particulate matter. A heated sampling gun, typically maintained at 120°C, prevents condensation of hot flue gas inside the gun. During sampling, the condenser and impinger are cooled in a water bath to maintain a flue gas temperature below 30°C at the CPM filter membrane outlet. After sampling, the condenser tubing is rinsed with deionized water, and the rinse and condensate are used as the inorganic fraction. The tubing is then rinsed with acetone and n-hexane, with the rinse used as the organic fraction. Immediately after sampling, the inorganic condensate is purged with high-purity nitrogen at a flow rate of 14.5 L / min for one hour to remove SO2 gas interference. The condensate is extracted with n-hexane, and the extract is mixed with the organic fraction. The CPM inorganic and organic solutions are evaporated to constant weight, and the masses of the inorganic and organic fractions are measured, respectively. Before and after sampling, the collected filter membranes were placed in a constant temperature and humidity balance chamber for 24 hours of equilibration and conditioning, and after static electricity removal, they were weighed using a 0.01 mg precision balance. This was used as the mass of the filter membrane fraction, and the sum of the three fractions was the CPM mass. The CPM concentration in the flue gas was then calculated based on the sampled flue gas volume. A disadvantage of this method is that the presence of SO2 gas interference can lead to a positive CPM bias.

[0004] The International Organization for Standardization (ISO) has published a dilution method for determining PM in flue gas. 2.5 The standard sampling method for determining PM2.5 is ISO 25597:2013. The corresponding sampling device is ISO 25597:2013. Stationary source emissions-test method for determining PM2.5 is ISO 25597:2013. 2.5 and PM 10mass in stack gases using cyclone samplers and sampling dilution[S].ISO:Geneva,Switzerland,2013. The method used by the sampling device is to use a cyclone cutter to remove particles larger than 2.5 μm in the flue gas, and then 2.5 The smoke of particulate matter is mixed with the dilution air in the dilution chamber to cool down, and finally the total PM is collected by the filter membrane. 2.5 Therefore, this method and device are used to collect PM in stationary source flue gas. 2.5 The collected particulate matter is a mixture of condensable particulate matter and filterable particulate matter. Similar device structures and methods are also disclosed in the dilution sampling system published by England GC, Watson JG, Chow JC, et al. Dilution-based emissions sampling from stationary sources: Part 1 - compact sampler methodology and performance [J]. Journal of Air & Waste Management Association, 2007, 57(1): 65-78.

[0005] The invention patent "A fixed source condensable particulate matter sampling device and sampling method" (patent publication number CN110441099 A) discloses a fixed source condensable particulate matter sampling device and sampling method. After the flue gas passes through the particulate matter classification device to remove large-size particulate matter, it is then divided into two parts through a heated and insulated flue gas pipeline. The first flue gas enters the air distribution plate, and the second flue gas enters the insulated and heated filterable particulate matter collection device. All particulate matter in the second flue gas is collected on the filter membrane in the filterable particulate matter collection device. The second flue gas then passes through the filterable particulate matter flowmeter and reaches the filterable particulate matter extraction device. The dilution air provided by the dilution air supply device passes through the dilution air organic matter and water vapor removal device, the dilution air particulate matter filter device and the dilution air flowmeter in sequence, enters the dilution chamber, and then mixes with the first flue gas through the air distribution plate to reduce the temperature. The mixture of the dilution air and the first flue gas is divided into two paths. The first mixed gas is used as bypass gas and passes through the bypass gas particulate filter device, bypass gas flow meter, and bypass gas exhaust device in sequence. The second mixed gas passes through the total particulate matter collection device. All the particulate matter in the second mixed gas is collected on the filter membrane of the total particulate matter collection device. Then, the second mixed gas passes through the total particulate matter flow meter and reaches the total particulate matter exhaust device. The weight gain of the filter membrane of the filterable particulate matter collection device and the filter membrane of the total particulate matter collection device are weighed separately. The weight gain of the filter membrane of the total particulate matter collection device is subtracted from the weight gain of the filter membrane of the filterable particulate matter collection device to obtain the mass of the condensable particulate matter. The mass concentration of the condensable particulate matter in the flue gas is then calculated based on the readings of the filterable particulate matter flow meter or the total particulate matter flow meter. This method is an offline sampling and measurement method with a long detection timeline and complicated steps. Summary of the Invention

[0006] In view of the deficiencies of the existing technology, the object of the present invention is to provide an online monitoring device and a method for using fixed source condensable particulate matter, which can monitor the mass concentration of condensable particulate matter online with a short detection time.

[0007] The present invention provides an online monitoring device for stationary source condensable particulate matter, comprising: a particulate matter classification device, a pipeline heating device, a reflux collision type condenser, a No. 1 water cooling radiator, a No. 2 water cooling radiator, a semiconductor refrigeration plate, a heat dissipation water radiator, a peristaltic pump, a gas flow meter, an air extraction device, a flow divider, a collection net rope, an atomization device, a drying device, a particulate matter mass concentration sensor, an air purification device, an air particulate matter filter device, and an air supply device; wherein:

[0008] The particle classification device is placed and fixed in the flue of the pollution source to collect flue gas and remove large-sized particles in the pollution source; 2.5 Particulate matter cyclone sampler or PM 2.5 particle impactor;

[0009] The pipeline heating device is a heating resistance wire attached to the flue gas pipeline. The pipeline heating device is used to heat the flue gas pipeline and maintain it at 120°C;

[0010] The inlet of the reflux impingement condenser is connected to the flue gas pipeline, and the outlet of the reflux impingement condenser is connected to the diverter; the reflux impingement condenser with patent application number 202310670481.6 is preferred;

[0011] The first water-cooling radiator is connected to the cold surface of the semiconductor refrigeration plate, and the second water-cooling radiator is connected to the hot surface of the semiconductor refrigeration plate; the semiconductor refrigeration plate cools the heat transfer medium in the first water-cooling radiator and transfers heat to the heat transfer medium in the second water-cooling radiator;

[0012] The heat dissipation water row is connected to the second water cooling row through a pipeline, and after cooling the heat transfer medium in the second water cooling row, it circulates back to the second water cooling row to continue absorbing heat;

[0013] The peristaltic pump is a high-precision peristaltic pump; the peristaltic pump is used to extract the condensed liquid in the diverter to the atomizing device;

[0014] The gas flow meter is used to set the gas volume of the gas extraction device and the gas supply device;

[0015] The exhaust device is used to extract the flue gas in the flue; the exhaust device is specifically an exhaust pump or a fan;

[0016] The diverter is made of glass and is equipped with a collection net rope. The collection net rope is made of polytetrafluoroethylene. The materials that come into contact with the condensed liquid meet the non-stick requirements of the condensed liquid, which not only improves the flue gas condensation efficiency but also ensures the collection quality.

[0017] The flow divider has two interfaces, the first interface is connected to the gas flow meter and the air extraction device in sequence; the other interface is connected to two peristaltic pumps through a hose;

[0018] The atomizing device is a compression atomizer, an ultrasonic atomizer, a mesh atomizer, or an electric atomizer; the lower end of the atomizing device is sequentially connected to an air purification device, an air particulate filter, a gas flow meter, and an air supply device; the outlet of the atomizing device is sequentially connected to a drying device, a tee pipe, and a particulate matter mass concentration sensor;

[0019] The drying device is a Nafion drying tube or a diffusion drying tube;

[0020] The particulate matter mass concentration sensor is a micro-oscillation balance, a β-attenuation monitor, a light scattering method particulate matter sensor or a light scintillation method particulate matter sensor.

[0021] The air supply device is used to provide an air source, and specifically can be an air compressor, a gas cylinder or a blower.

[0022] The air purification device is used to remove organic matter and water vapor in the gas provided by the gas supply device.

[0023] The air particle filter device is used to filter and remove particles in the gas provided by the gas supply device.

[0024] The present invention also provides a method for using the above-mentioned fixed source condensable particulate matter online monitoring device, which specifically comprises the following steps:

[0025] Step 1: Turn on the pipeline heating device to heat and keep the flue gas pipeline at 120°C; turn on the semiconductor refrigeration plate and the heat dissipation water row to cool the heat transfer medium in the reflux collision condenser; turn on the exhaust device, set the gas flow meter, and start extracting flue gas;

[0026] Step 2: The flue gas passes through the particle classification device to remove large-size particles, and then enters the reflux collision condenser through the heated and insulated flue gas pipeline. The flue gas condenses into liquid in the reflux collision condenser and enters the diverter;

[0027] Step 3: The peristaltic pump extracts all the condensed liquid in the diverter into the atomizing device;

[0028] Step 4: Turn on the air supply device. The air provided by the air supply device passes through the air flow meter, the air particulate filter device and the air purification device in sequence, so that a certain amount of air enters the atomizer;

[0029] Step 5: The condensed liquid extracted by the atomizer and the peristaltic pump enters the drying device; the particle mass concentration sensor extracts part of the atomized particles to detect their mass concentration. The total particle concentration in the flue gas is then calculated based on the air volume supplied by the air supply device and the flue gas volume extracted by the extraction device.

[0030] Step 6: Read the filterable particulate matter mass concentration of the CEMS flue gas emission continuous monitoring system, and then calculate the difference between the total particulate matter concentration and the filterable particulate matter mass concentration to obtain the condensable particulate matter mass concentration.

[0031] The beneficial effects of the present invention are:

[0032] (1) Compared with the condensation method (US EPA Method-202), the present invention can avoid the interference of gases such as SO2 in condensable particulate matter, and can simulate the process of flue gas condensing into particulate matter after actual emission and then diffusing and drying in the atmospheric environment;

[0033] (2) Compared with the fixed-source condensable particulate matter sampling device and sampling method (Patent Publication No. CN 110441099A), the present invention can monitor the mass concentration of condensable particulate matter online with a short detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of the online monitoring device for stationary source condensable particulate matter of the present invention.

[0035] Figure 2 It is a schematic diagram of the structure of the split-flow collision type high-efficiency condenser tube in the device of the present invention.

[0036] Figure 3 This is a cross-sectional view of the split-flow, collision-type high-efficiency condenser structure in the device of the present invention.

[0037] The numbers in the figure are: 1 is a particle classification device, 2 is a pipeline heating device, 3 is a reflux collision type condenser, 401 is a water cooling row No. 1, 402 is a water cooling row No. 2, 5 is a semiconductor refrigeration plate, 6 is a heat dissipation water row, 7 is a peristaltic pump, 8 is a gas flow meter, 9 is an exhaust device, 10 is a diverter, 11 is an atomizing device, 12 is a drying device, 13 is a particle mass concentration sensor, 14 is an air purification device, 15 is an air particle filtering device, 16 is an air supply device, 17 is a collecting net rope, 301 is a pipe side, 3011 is a throat pipe, 3012 is a ring pipe, 302 is a shell side, 3021 is a cooling medium inlet, 3022 is a cooling medium inlet, 303 is a pipe side inlet, and 304 is a pipe side outlet. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0039] Example: See Figure 1 The system comprises: a particle classification device 1, a pipe heating device 2, a reflux collision type condenser 3, a No. 1 water cooling radiator 401, a No. 2 water cooling radiator 402, a semiconductor refrigeration plate 5, a heat dissipation water radiator 6, a peristaltic pump 7, a gas flow meter 8, an air extraction device 9, a flow divider 10, an atomization device 11, a drying device 12, a particle mass concentration sensor 13, an air purification device 14, an air particle filter 15, an air supply device 16, a collection net rope 17, a pipe side 301, a throat pipe 3011, a ring pipe 3012, a shell side 302, a cooling medium inlet 3021, a cooling medium inlet 3022, a pipe side inlet 303, and a pipe side outlet 304.

[0040] In this embodiment, the particle classification device 1 is a PM 2.5 Particulate matter cyclone sampler or PM 2.5 Particle impactors, such as PM 2.5 Cyclone sampler, PM 2.5 Inertial impactor sampler.

[0041] In this embodiment, the flue gas pipeline is a pipeline made of stainless steel or other materials capable of transmitting gas. The pipeline heating device is a heating resistance wire attached to the flue gas pipeline. The pipeline heating device 3 maintains the flue gas pipeline at 120°C.

[0042] In this embodiment, the reflux impingement condenser 3 adopts the split impingement condenser in Chinese application No. 202310670481.6. Figure 2 The split-flow collision type high-efficiency condenser comprises a tube side 301 and a shell side 302; wherein:

[0043] The pipe 301 is composed of multiple circular reflux collision structures connected in series. Each reflux collision structure is annular and is called a ring pipe 3012. A straight pipe is connected between two adjacent ring pipes, and the straight pipe is called a throat pipe 3011. The upper end of the pipe 301 is the inlet 303 of the cooled fluid, and the lower end of the pipe 301 is the outlet 304 of the cooled fluid.

[0044] The shell side 302 has a cooling medium inlet 3021 at its lower portion and a cooling medium outlet 3022 at its upper portion;

[0045] The cooling medium flows in from the cooling medium inlet 3021 and flows out from the cooling medium outlet 3022, i.e., the cooling medium enters the shell side 302 from bottom to top, ensuring that the shell side 302 is always filled with the cooling medium; the cooled fluid enters from the inlet at the upper end of the tube side and flows out from the outlet at the lower end of the tube side after being cooled, i.e., the cooled fluid enters the inner tube from the upper end of the tube side and flows from top to bottom;

[0046] The cross-sectional area of ​​the throat pipe 3012 is greater than or equal to the cross-sectional area of ​​one ring pipe 3011 and less than or equal to the cross-sectional area of ​​two ring pipes 3011;

[0047] The inlet and outlet of the pipe 302 are used to connect to glassware, and the size and structure can be changed according to actual needs.

[0048] In this embodiment, the inlet of the reflux impingement type condenser 3 is connected to the flue gas pipeline, and the outlet of the reflux impingement type condenser 3 is connected to the diverter.

[0049] In this embodiment, radiator 1 401 is connected to the cold side of semiconductor cooling plate 5, while radiator 2 402 is connected to the hot side of semiconductor cooling plate 5. The semiconductor cooling plate 5 cools the heat transfer medium in radiator 1 401 and transfers heat to the heat transfer medium in radiator 2 402. Specifically, five semiconductor cooling plates 5 are placed between radiator 1 401 and radiator 2 402.

[0050] In this embodiment, the heat dissipation water row 6 is connected to the second water cooling row 402 through a pipeline, and after cooling the heat transfer medium in the second water cooling row 402, it circulates back to the second water cooling row 402 to continue absorbing heat.

[0051] In this embodiment, the peristaltic pump 7 is a high-precision peristaltic pump that extracts all the condensed liquid in the diverter to the atomizing device.

[0052] In this embodiment, the gas flow meter 8 can set the gas volume of the gas extraction device 9 and the gas supply device 16.

[0053] In this embodiment, the air extraction device 9 is an air extraction pump or a fan.

[0054] In this embodiment, the diverter 10 is made of glass and is equipped with a collecting net rope 17 inside. The collecting net rope 17 is made of polytetrafluoroethylene. The materials in contact with the condensed liquid meet the non-stick requirements of the condensed liquid, which not only improves the flue gas condensation efficiency but also ensures the collection quality.

[0055] In this embodiment, the flow diverter 10 has two interfaces, the first interface is connected to the gas flow meter 8 and the air extraction device 9 in sequence; the other interface is connected to the peristaltic pump 7 through a hose.

[0056] In this embodiment, the atomizing device 11 is a compression atomizer, ultrasonic atomizer, mesh atomizer, or electric atomizer. In this embodiment, the lower end of the atomizing device 11 is sequentially connected to an air purification device 14, an air particulate filter 13, a gas flow meter 8, and an air supply device 16. The outlet of the atomizing device 11 is sequentially connected to a drying device 12, a T-shaped pipe, and a particulate matter mass concentration sensor 13.

[0057] In this embodiment, the drying device 12 is a Nafion drying tube or a diffusion drying tube.

[0058] In this embodiment, the particulate matter mass concentration sensor is a micro-oscillating balance, a β-decay monitor, a light scattering method particulate matter sensor, or a light scintillation method particulate matter sensor.

[0059] In this embodiment, the air supply device is an air compressor, a gas cylinder or a blower.

[0060] In this embodiment, the air purification device can remove organic matter and water vapor in the gas provided by the gas supply device, specifically activated carbon or molecular sieve.

[0061] In this embodiment, the air particulate matter filtering device can filter and remove particulate matter in the gas provided by the air supply device, specifically a bag dust collector, a cartridge dust collector or an electrostatic precipitator.

[0062] The methods used in this example are:

[0063] Step 1: Turn on the pipeline heating device 3 to heat and keep the flue gas pipeline at 120°C; turn on the semiconductor refrigeration plate 5 and the heat dissipation water discharge 6 to cool the heat transfer medium in the reflux collision condenser; turn on the exhaust device 9, set the gas flow meter 8, and start extracting flue gas;

[0064] Step 2: After the flue gas passes through the particle classifier 1 to remove large-size particles, it enters the reflux impingement condenser 3 through the heated and insulated flue gas pipeline. The flue gas is condensed into liquid in the reflux impingement condenser 3 and enters the diverter 10.

[0065] Step 3: The peristaltic pump 7 extracts all the condensed liquid in the diverter into the atomizing device;

[0066] Step 4: Turn on the air supply device 16. The air provided by the air supply device 16 passes through the air flow meter 8, the air particulate filter 15 and the air purification device 14 in sequence, so that a fixed amount of air enters the atomizer 11.

[0067] Step 5: The atomizer 11 atomizes the condensed liquid extracted by the peristaltic pump 7 and enters the drying device 12; the particle mass concentration sensor 13 extracts a portion of the atomized particles to detect their mass concentration, and then reversely calculates the total particle concentration in the flue gas based on the air volume supplied by the air supply device 16 and the flue gas volume extracted by the extraction device 9;

[0068] Step 6: Read the filterable particulate matter mass concentration of the CEMS flue gas emission continuous monitoring system, and then calculate the difference between the total particulate matter concentration and the filterable particulate matter mass concentration to obtain the condensable particulate matter mass concentration.

[0069] The sampling device and use method of the present invention can avoid the interference of gases such as SO2 in condensable particulate matter, and can simulate the process of actual flue gas being condensed into particulate matter after emission and then diffused and dried in the atmospheric environment.

Claims

1. An online monitoring device for fixed source condensable particulate matter, characterized in that: include: Particle classification device (1), pipeline heating device (2), reflux collision type condenser (3), No. 1 water cooling row (401), No. 2 water cooling row (402), semiconductor refrigeration plate (5), heat dissipation water row (6), peristaltic pump (7), gas flow meter (8), collection net rope (17), air extraction device (9), diverter (10), atomization device (11), drying device (12), particle mass concentration sensor (13), air purification device (14), air particle filter device (15), air supply device (16); wherein: The particle classification device (1) is placed and fixed in the flue of the pollution source, and is used to collect flue gas and remove large-sized particles in the pollution source; specifically, PM 2.5 Particulate matter cyclone sampler or PM 2.5 Particle impactor; The pipeline heating device (2) is a heating resistance wire attached to the flue gas pipeline, and the pipeline heating device (2) maintains the flue gas pipeline at 120°C; The inlet of the reflux collision type condenser (3) is connected to the flue gas pipeline, and the outlet of the reflux collision type condenser (3) is connected to the diverter (10); The first water-cooling radiator (401) is connected to the cold surface of the semiconductor refrigeration plate (5), and the second water-cooling radiator is connected to the hot surface of the semiconductor refrigeration plate (5); the semiconductor refrigeration plate (5) cools the heat transfer medium in the first water-cooling radiator (401) and transfers heat to the heat transfer medium in the second water-cooling radiator (402); The heat dissipation water row (6) is connected to the second water cooling row (402) through a pipeline, and after cooling the heat transfer medium in the second water cooling row (402), it circulates back to the second water cooling row (402) to continue absorbing heat; The peristaltic pump (7) is used to extract the condensed liquid in the diverter (10) to the atomizing device (11); The gas flow meter (8) is used to set the gas volume of the gas extraction device (9) and the gas supply device (16); The exhaust device (9) is used to extract the flue gas in the flue; The gas supply device (16) is used to provide a gas source; The diverter (10) is made of glass and is provided with a collecting net rope (17) therein. The collecting net rope is made of polytetrafluoroethylene, and the materials in contact with the condensed liquid all meet the non-stick requirements of the condensed liquid. The flow divider (10) has two interfaces, the first interface is connected to the gas flow meter (8) and the air extraction device (9) in sequence; the other interface is connected to the peristaltic pump (7) through a hose; The lower end of the atomizing device (11) is connected in sequence to the air purification device (14), the air particulate filter device (15), the gas flow meter (8), and the air supply device (16); the outlet of the atomizing device (11) is connected in sequence to the drying device (12), the three-way pipe, and the particulate matter mass concentration sensor (13); The air purification device (14) is used to remove organic matter and water vapor from the gas provided by the gas supply device (16); The air particle filter device (15) is used to filter and remove particles in the gas provided by the gas supply device (16); The air supply device (16) is an air compressor, a gas cylinder or a blower; The air extraction device (9) is an air extraction pump or a fan.

2. The online monitoring device for stationary source condensable particulate matter according to claim 1, characterized in that: The atomizing device (11) is a compression atomizer, an ultrasonic atomizer, a mesh atomizer or an electric atomizer.

3. The online monitoring device for stationary source condensable particulate matter according to claim 1, characterized in that: The drying device (12) is a Nafion drying tube or a diffusion drying tube.

4. The online monitoring device for stationary source condensable particulate matter according to claim 1, characterized in that: The particle mass concentration sensor (13) is a micro-oscillating balance, Attenuation monitor, light scattering particle sensor or light scintillation particle sensor.

5. A method for using the online monitoring device for stationary source condensable particulate matter according to any one of claims 1 to 4, characterized in that: Specifically: Step 1: Turn on the pipeline heating device (2) to heat and keep the flue gas pipeline at 120°C; turn on the semiconductor refrigeration plate (5) and the heat dissipation water drain (6) to cool the heat transfer medium in the reflux collision condenser (3); turn on the exhaust device (9), set the gas flow meter (8), and start extracting flue gas; Step 2: The flue gas is placed and fixed in the flue of the pollution source through the particle classification device (1) to collect the flue gas and remove large-sized particles in the pollution source. The flue gas then enters the reflux collision condenser (3) through the heated and insulated flue gas pipeline. The flue gas is condensed into liquid in the reflux collision condenser (3) and enters the diverter (10); Step 3: The peristaltic pump (7) extracts all the condensed liquid in the diverter (10) into the atomizing device (11); Step 4: Turn on the air supply device (16), and the air provided by the air supply device (16) passes through the air flow meter (8), the air particle filter device (15), and the air purification device (14) in sequence, so that a fixed amount of air enters the atomizer (17); Step 5: The atomizer (17) atomizes the condensed liquid extracted by the peristaltic pump (7) and enters the drying device (12); the particle mass concentration sensor (13) extracts part of the atomized particles to detect their mass concentration, and then calculates the total particle concentration in the flue gas based on the air volume supplied by the air supply device (16) and the flue gas volume extracted by the extraction device (9); Step 6: Read the filterable particulate matter mass concentration of the CEMS flue gas emission continuous monitoring system, and then calculate the difference between the total particulate matter concentration and the filterable particulate matter mass concentration to obtain the condensable particulate matter mass concentration.

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