CN109406229A - A kind of high-humidity gas fume dilution sampling device and its method of sampling - Google Patents
A kind of high-humidity gas fume dilution sampling device and its method of sampling Download PDFInfo
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- CN109406229A CN109406229A CN201811357457.2A CN201811357457A CN109406229A CN 109406229 A CN109406229 A CN 109406229A CN 201811357457 A CN201811357457 A CN 201811357457A CN 109406229 A CN109406229 A CN 109406229A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2211—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with cyclones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
- G01N2001/2261—Sampling from a flowing stream of gas in a stack or chimney preventing condensation (heating lines)
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N2001/227—Sampling from a flowing stream of gas separating gas from solid, e.g. filter
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Abstract
The present invention relates to a kind of high-humidity gas fume dilution sampling device and its method of samplings.PM10Whirlwind cutter, level-one PM2.5Whirlwind cutter, flue gas keep the temperature dehumidification device, sampling air flow flowmeter, level-one diluter, secondary dilution device, second level PM2.5Whirlwind cutter, particulate filter, flue gas mixing arrangement, flue gas flow meter, flue gas stream control valve and sampling pump are sequentially connected, air compressor provides compressed air and is divided into three tunnels through compressed air buffering and processing unit, a-road-through overdrying pathogenic dryness flow control valve, dry gas stream flowmeter and flue gas heat preservation dehumidification device are connected with flue gas mixing arrangement, it is connected all the way by level-one dilution air flow control valve and level-one dilution air flow flowmeter with level-one diluter, pass through secondary dilution control damper all the way, secondary dilution air flow meter, level-one diluter and secondary dilution stream pressure table are connected with secondary dilution device.The present invention realize super-humid conditions under flue gas can trap particulate matter and condensable particulate matter sampling.
Description
Technical field
The present invention relates to high-humidity gas fume particle sampling systems, and in particular to a kind of high-humidity gas fume dilution sampling device and its
The method of sampling.
Background technique
The sample detecting of flue gas particles can be not only used for the generation and control characteristic research of flue gas pollutant, Er Qie
Play a significant role in research in terms of particulate matter specificity analysis, atmospheric pollution effect and source resolution, it is especially de- in particulate matter
Except performance and source resolution field have great application prospect.
Particulate matter be divided into can trap particulate matter and condensable particulate matter, condensable particulate matter refers to particulate matter in flue gas ring
Gaseous state, the particulate matter formed after diluting temperature-fall period into atmosphere are in border.Currently, domestic can trap mainly for flue gas
Particulate matter carries out sampling analysis.The external existing method of sampling for condensable particulate matter, which mainly passes through dilution cooling effect, to be made
It forms the particulate matter being easily captured.
Can the sample detecting of trap particulate matter to be based primarily upon the air dynamic behaviour of particulate matter, electrology characteristic and filtering special
Property.Filtering feature is the main support mechanism of the conventional granulates object method of sampling, typically there is filter cylinder sampling and filter membrane sampling.Electricity
Characteristic is widely used in particulate matter non-direct contact sampling, main to rely on the induced electricity generated in charged particle thing motion process
Stream corresponds to the sampled concentrations of particulate matter, often uses simultaneously with the air dynamic behaviour of particulate matter.Air dynamic behaviour
It is particulate matter with the characteristic embodied during air motion, also can directly reflects pollution of the particulate matter in atmospheric environment and move
Characteristic is moved, therefore is widely used in fine particle (PM2.5) sample detecting in.
Currently, the domestic particle sampling method being widely used is based primarily upon air dynamic behaviour and the filtering of particulate matter
Characteristic.However particle sampling of the above-mentioned method of sampling suitable for conventional flue gas, such as application No. is 201410810925.2
Chinese patent, in high humidity environment, wet desulphurization or wet electrical dust precipitator tail especially in minimum discharge improvement project
Particle sampling in portion's saturated humidity flue gas, the air dynamic behaviour and filtering feature of particulate matter will receive saturated humidity item
Part seriously affects.For minimum discharge improvement project, due to the particle in wet desulphurization or wet electrical dust precipitator tail flue gas
Object concentration is extremely low, and the error in particle sampling will seriously affect final test result.
Therefore, develop it is a kind of novel for high-humidity gas fume condition, based on dilution cooling effect can trap particulate matter and
Condensable particulate matter combined sampling system is very necessary.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and a kind of dilution of high-humidity gas fume is provided and is adopted
Sampling device and its method of sampling pass through aerodynamic size cutting, heat preservation dehumidifying, Multi-stage dilution for high-humidity gas fume environment
And high efficiency filter, realize can trap particulate matter and condensable particulate matter combined sampling.The present invention can effectively realize that particle divides in advance
From, efficiently dehumidifying, dilution for many times, pipeline blockage and condensation vapor are avoided, suitable for cigarette of the high humidity even under the conditions of saturated humidity
Gas sampling.
Technical solution used by the present invention solves the above problems is: a kind of high-humidity gas fume dilution sampling device, feature
It is, including PM10Whirlwind cutter, level-one PM2.5Whirlwind cutter, flue gas heat preservation dehumidification device, air compressor, compression are empty
Gas control valve, compressed air buffering and processing unit, dry gas stream control valve, secondary dilution control damper, level-one carrier gas
Flow control valve, level-one dilution air flow flowmeter, secondary dilution air flow meter, dry gas stream flowmeter, sampling air flow flowmeter,
Level-one diluter, secondary dilution stream pressure table, secondary dilution device, second level PM2.5Whirlwind cutter, particulate filter, flue gas
Mixing arrangement, flue gas flow meter, flue gas stream control valve and sampling pump；The PM10Whirlwind cutter, level-one PM2.5Whirlwind cutting
Device, flue gas keep the temperature dehumidification device, sampling air flow flowmeter, level-one diluter, secondary dilution device, second level PM2.5Whirlwind cutter,
Particulate filter, flue gas mixing arrangement, flue gas flow meter, flue gas stream control valve and sampling pump are sequentially connected, the second level
Dilution air flow pressure gauge is arranged on level-one diluter, the air compressor, compressed air control valve and compressed air buffering
And processing unit is sequentially connected, the gas outlet of the compressed air buffering and processing unit is divided into three tunnels, and the first via passes sequentially through
The compressed air inlet port of dry gas stream control valve, dry gas stream flowmeter and flue gas heat preservation dehumidification device and flue gas mixing arrangement
It is connected, the second tunnel passes sequentially through level-one dilution air flow control valve and level-one dilution air flow flowmeter and the compression of level-one diluter is empty
Gas air inlet be connected, third road pass sequentially through secondary dilution control damper, secondary dilution air flow meter, level-one diluter and
Secondary dilution stream pressure table is connected with the compressed air inlet port of secondary dilution device；The PM10Whirlwind cutter, level-one PM2.5
Whirlwind cutter and second level PM2.5The bottom of whirlwind cutter has ash bucket.
Furthermore, the flue gas heat preservation dehumidification device is concentric bilayer cylindrical structure, and the material of inner layer cylinder wall is
Perfluorinated sulfonic resin, the material of outer layer cylindrical wall are stainless steel, and heating and thermal insulation structure is used outside outer layer cylindrical wall.
Furthermore, the level-one diluter is concentric four layers of cylindrical structure, and first layer cylindrical wall is not from inside to outside
Become rusty the totally-enclosed microcellular structure of steel, and second layer cylindrical wall is stainless steel full-closed structure, and third layer cylindrical wall is that stainless steel is semiclosed
Structure, the 4th layer of cylindrical wall are stainless steel full-closed structure.
Furthermore, the sampling air flow admission line end of the secondary dilution device is conical structure, the cone
Structure is located at the internal cavity entrance center of secondary dilution device, and the secondary dilution air-flow of conical structure and secondary dilution device into
Feed channel square crossing, intake air channel constitute " gradually laval nozzle " form.
Furthermore, condensable particulate matter filter membrane is provided in the particulate filter.
The method of sampling of high-humidity gas fume dilution sampling device is as follows: by PM10Whirlwind cutter and level-one PM2.5Whirlwind cutting
Device is placed in sampling flue, or uses heating and thermal insulation measure, is consistent sampling environment with flue environment；Sample flue gas into
Enter PM10After whirlwind cutter, aerodynamic size greater than 10 microns can trap particulate matter be segregated into PM10Whirlwind is cut
The ash bucket of cutter, remaining particulate matter enter level-one PM with sampling flue gas2.5Whirlwind cutter, it is micro- that aerodynamic size is greater than 2.5
Rice can trap particulate matter be segregated into level-one PM2.5The ash bucket of whirlwind cutter, remaining particulate matter enter cigarette with sampling flue gas
Gas keeps the temperature dehumidification device；The compressed air that air compressor provides pass sequentially through compressed air control valve and compressed air buffering and
Processing unit is then divided into three tunnels, respectively dry gas stream, level-one dilution air flow and secondary dilution air-flow；Dry gas stream passes through cigarette
The compressed air inlet port of gas heat preservation dehumidification device enters the outer layer cylinder of flue gas heat preservation dehumidification device, keeps flue gas heat preservation dehumidifying
Compressed air and sampling flue gas are in the opposite type of flow in device, and the air flow rate for controlling compressed air is 2 sampling flue gas streams
Amount, while sampling flue gas and compressed air pressure difference are controlled as+900~-200 mbar, heating flue gas keeps the temperature the outer of dehumidification device
Layer cylindrical wall is consistent compressed air temperature with sampling flue-gas temperature, samples moisture in flue gas and passes through flue gas heat preservation dehumidifying dress
Set inner layer cylinder wall enter in compressed air make sample flue gas relative humidity be reduced to 60% or less；It is dilute that sampling flue gas enters level-one
Device is released, level-one dilution air flow enters the second layer cylinder of level-one diluter by the compressed air inlet port of level-one diluter, protects
It holds level-one dilution air flow and sampling flue gas is in the opposite type of flow, the flow of control level-one dilution air flow is 1.5 sampling flue gases
Flow, level-one dilution air flow enter first layer cylinder by micropore and mix with sampling flue gas；Secondary dilution air-flow is dilute by level-one
The compressed air inlet port for releasing device enters the 4th layer of cylinder of level-one diluter, and level-one dilution is flowed out after third layer cylinder
Device, keeping secondary dilution air-flow and level-one dilution air flow in second layer cylinder in third layer cylinder is in the opposite type of flow；Second level
Dilution air flow enters in secondary dilution device after entering the compressed air inlet pipe road of secondary dilution device by its cone end
Portion's cavity, charge air flow make cone pressure against the ends sample smoke air inlet pressure lower than secondary dilution device by " Venturi effect "
Power promotes sampling flue gas to enter secondary dilution device, samples flue gas and secondary dilution air-flow is dilute in second level by " pressure difference effect "
The internal cavity for releasing device is sufficiently mixed；The dilution ratio of secondary dilution device by secondary dilution device the air pressure of sampling smoke air inlet and
Secondary dilution air-flow air inlet air pressure is controlled；Sample total dilution ratio control of the flue gas after level-one dilution and secondary dilution
System is greater than 20 times, and sampling flue gas total residence time is greater than 10s, and dilution post-sampling flue-gas temperature is lower than 42 DEG C；Sampling after dilution
Flue gas enters second level PM2.5The air inlet of whirlwind cutter, aerodynamic size greater than 2.5 microns of particulate matter separated into
Enter second level PM2.5The ash bucket of whirlwind cutter, remaining particulate matter enter particulate filter, aerodynamics grain with sampling flue gas
Particulate matter of the diameter less than or equal to 2.5 microns is by trap filter；The filtered sampling flue gas of particulate filter is removed with flue gas heat preservation
After the clean dried air-flow in the exit of wet device enters flue gas mixing arrangement together, it is discharged by sampling pump.
Compared with prior art, the present invention having the following advantages that and effect:
(1) in PM10Whirlwind cutter and level-one PM2.5On the basis of particulate matter pre-separation is realized in the series connection of whirlwind cutter, joint
High-efficiency insulated dehumidification device, Multi-stage dilution device and high-efficiency particulate separating and filtering device, can be in high humidity even saturated humidity item
Under part, realize can trap particulate matter and condensable particulate matter combined sampling.
(2) PM10Whirlwind cutter and level-one PM2.5It is micro- to realize that aerodynamic size is greater than 2.5 for the series connection of whirlwind cutter
Rice can trap particulate matter pre-separation, on the one hand mitigate the sampling load of subsequent particle sampling device, on the other hand pass through
Aerodynamic size less than or equal to 2.5 microns can trap particulate matter promote condensable in subsequent dilution temperature-fall period
The condensation nucleation process of grain object.
(3) material of flue gas heat preservation dehumidification device inner layer cylinder wall uses perfluorinated sulfonic resin, and outer layer cylindrical wall is not using
On the one hand rust steel heating and thermal insulation structure realizes efficiently dehumidifying, on the other hand avoids sampling cigarette in dehumidification process by heating and thermal insulation
The cooling effect of gas, so that coagulation and steam be avoided to influence each other.
(4) level-one diluter uses concentric four layers of cylindrical structure, and first layer cylindrical wall uses the totally-enclosed micropore knot of stainless steel
Structure, second layer cylindrical wall use stainless steel full-closed structure, and third layer cylindrical wall uses stainless steel semi-closed structure, the 4th layer of circle
Barrel uses stainless steel full-closed structure.Using multi-layer cylinder structure, one on the one hand is realized by heating level-one dilution air flow
On the other hand cooling diluting effect in grade diluter realizes sampling cigarette in level-one diluter by heating secondary dilution air-flow
The further cooling of gas.
(5) intake air channel of secondary dilution device constitutes " gradually laval nozzle " form, on the one hand dilute by adjusting second level
Outgassing flowing pressure realizes the control of secondary dilution device dilution ratio, so that total dilution ratio of control system, on the other hand utilizes
" Venturi effect " promotes sampling flue gas to enter secondary dilution device, further promotes the dilution coagulation of sampling flue gas.
(6) second level PM2.5Whirlwind cutter and particulate filter series connection, realize that aerodynamic size is greater than 2.5 microns
The separation and collection and aerodynamic size of particulate matter are less than or equal to the trap filter of 2.5 micron particles objects, alleviate particulate matter
The particle concentration of filter trap filter farthest prolongs in the case where condensable particulate matter filter membrane size is certain
The sampling time of device is grown.
(7) the high-humidity gas fume dilution sampling device particle sampling environment adapts to extensively, and dehumidifying and cooling dilution sufficiently, avoids
Pipeline blockage and condensation vapor, system stable operation time are longer.
Detailed description of the invention
Fig. 1 is the high-humidity gas fume dilution sampling device structural schematic diagram of the embodiment of the present invention.
In figure: PM10Whirlwind cutter 1, level-one PM2.5Whirlwind cutter 2, flue gas keep the temperature dehumidification device 3, air compressor
4, compressed air control valve 5, compressed air buffering and processing unit 6, dry gas stream control valve 7, secondary dilution control damper
8, level-one dilution air flow control valve 9, level-one dilution air flow flowmeter 10, secondary dilution air flow meter 11, dry gas stream flow
Count 12, sampling air flow flowmeter 13, level-one diluter 14, secondary dilution stream pressure table 15, secondary dilution device 16, second level PM2.5
Whirlwind cutter 17, particulate filter 18, flue gas mixing arrangement 19, flue gas flow meter 20, flue gas stream control valve 21, sampling
Pump 22.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to Fig. 1, a kind of high-humidity gas fume dilution sampling device, including PM10Whirlwind cutter 1, level-one PM2.5Whirlwind cutting
Device 2, flue gas heat preservation dehumidification device 3, air compressor 4, compressed air control valve 5, compressed air buffering and processing unit 6 are done
Pathogenic dryness flow control valve 7, secondary dilution control damper 8, level-one dilution air flow control valve 9, level-one dilution air flow flowmeter 10, two
Grade dilution air flow flowmeter 11, dry gas stream flowmeter 12, sampling air flow flowmeter 13, level-one diluter 14, secondary dilution gas
Flowing pressure table 15, secondary dilution device 16, second level PM2.5Whirlwind cutter 17, particulate filter 18, flue gas mixing arrangement 19, cigarette
Air-flow meter 20, flue gas stream control valve 21 and sampling pump 22.
PM10Whirlwind cutter 1, level-one PM2.5Whirlwind cutter 2, flue gas keep the temperature dehumidification device 3, sampling air flow flowmeter
13, level-one diluter 14, secondary dilution device 16, second level PM2.5Whirlwind cutter 17, particulate filter 18, flue gas mixing arrangement
19, flue gas flow meter 20, flue gas stream control valve 21 and sampling pump 22 are sequentially connected, and the setting of secondary dilution stream pressure table 15 exists
On level-one diluter 14, air compressor 4, compressed air control valve 5 and compressed air buffering and processing unit 6 are sequentially connected,
The gas outlet of compressed air buffering and processing unit 6 is divided into three tunnels, and the first via passes sequentially through dry gas stream control valve 7, dry gas
Stream flowmeter 12 and flue gas heat preservation dehumidification device 3 are connected with the compressed air inlet port of flue gas mixing arrangement 19, and the second tunnel is successively
Pass through the compressed air inlet port phase of level-one dilution air flow control valve 9 and level-one dilution air flow flowmeter 10 and level-one diluter 14
Even, third road passes sequentially through secondary dilution control damper 8, secondary dilution air flow meter 11, level-one diluter 14 and second level
Dilution air flow pressure gauge 15 is connected with the compressed air inlet port of secondary dilution device 16；PM10Whirlwind cutter 1 is cut using feed inlet
To arrangement and the conical cyclone separator device of bottom belt ash bucket and gas outlet, level-one PM2.5Whirlwind cutter 2 and second level
PM2.5Whirlwind cutter 17 is using feed inlet arranged tangential and the conical cyclone separator device of bottom belt ash bucket.
It is concentric bilayer cylindrical structure that flue gas, which keeps the temperature dehumidification device 3, and the material of inner layer cylinder wall is perfluorinated sulfonic resin, outside
The material of layer cylindrical wall is stainless steel, and heating and thermal insulation structure is used outside outer layer cylindrical wall.
Level-one diluter 14 is concentric four layers of cylindrical structure, and first layer cylindrical wall is the totally-enclosed micropore of stainless steel from inside to outside
Structure, second layer cylindrical wall are stainless steel full-closed structure, and third layer cylindrical wall is stainless steel semi-closed structure, the 4th layer of cylinder
Wall is stainless steel full-closed structure.
The sampling air flow admission line end of secondary dilution device 16 is conical structure, and it is dilute which is located at second level
The internal cavity entrance center of device 16 is released, and conical structure is vertical with the secondary dilution air-flow admission line of secondary dilution device 16
Intersect, intake air channel constitutes " gradually laval nozzle " form.
Condensable particulate matter filter membrane is provided in particulate filter 18.
The method of sampling of high-humidity gas fume dilution sampling device is as follows: by PM10Whirlwind cutter 1 and level-one PM2.5Whirlwind cutting
Device 2 is placed in sampling flue, or uses heating and thermal insulation measure, is consistent sampling environment with flue environment；Sample flue gas
Into PM10After whirlwind cutter 1, aerodynamic size greater than 10 microns can trap particulate matter be segregated into PM10Whirlwind
The ash bucket of cutter 1, remaining particulate matter enter level-one PM with sampling flue gas2.5Whirlwind cutter 2, aerodynamic size is greater than
2.5 microns can trap particulate matter be segregated into level-one PM2.5The ash bucket of whirlwind cutter 2, remaining particulate matter is with sampling flue gas
Dehumidification device 3 is kept the temperature into flue gas.
The compressed air that air compressor 4 provides passes sequentially through compressed air control valve 5 and compressed air buffering and processing
Device 6 is then divided into three tunnels, respectively dry gas stream, level-one dilution air flow and secondary dilution air-flow；Dry gas stream passes through flue gas
The compressed air inlet port of heat preservation dehumidification device 3 enters the outer layer cylinder of flue gas heat preservation dehumidification device 3, keeps flue gas heat preservation dehumidifying
Compressed air and sampling flue gas are in the opposite type of flow in device 3, and the air flow rate for controlling compressed air is 2 sampling flue gas streams
Amount, while sampling flue gas and compressed air pressure difference are controlled as+900~-200 mbar, heating flue gas keeps the temperature dehumidification device 3
Outer layer cylindrical wall is consistent compressed air temperature with sampling flue-gas temperature, samples moisture in flue gas and dehumidifies by flue gas heat preservation
3 inner layer cylinder wall of device, which enters in compressed air, makes sampling flue gas relative humidity be reduced to 60% or less；Sampling flue gas enters level-one
Diluter 14, level-one dilution air flow enter the second layer of level-one diluter 14 by the compressed air inlet port of level-one diluter 14
Cylinder, keeps level-one dilution air flow and sampling flue gas is in the opposite type of flow, and the flow of control level-one dilution air flow is 1.5 times and adopts
Sample flue gas flow, level-one dilution air flow enter first layer cylinder by micropore and mix with sampling flue gas；Secondary dilution air-flow passes through
The compressed air inlet port of level-one diluter 14 enters the 4th layer of cylinder of level-one diluter 14, flows out after third layer cylinder
Level-one diluter 14 keeps secondary dilution air-flow in third layer cylinder to flow with level-one dilution air flow in second layer cylinder in opposite
Mode；Secondary dilution air-flow enters behind the compressed air inlet pipe road of secondary dilution device 16 and enters second level by its cone end
The internal cavity of diluter 16, charge air flow adopt cone pressure against the ends lower than secondary dilution device 16 by " Venturi effect "
Sample smoke air inlet pressure promotes sampling flue gas to enter secondary dilution device 16, samples flue gas and second level by " pressure difference effect "
Dilution air flow is sufficiently mixed in the internal cavity of secondary dilution device 16；The dilution ratio of secondary dilution device 16 is by secondary dilution device 16
The air pressure of sampling smoke air inlet and secondary dilution air-flow air inlet air pressure controlled；Set secondary dilution device 16 sample flue gas into
Port air pressure is 1000~1040 mbar, and secondary dilution air-flow air inlet air pressure is 1.9~2.1bar, then secondary dilution multiplying power
About 8 times；It samples total dilution ratio of the flue gas after level-one dilution and secondary dilution and is greater than 20 times, sampling flue gas always stops
Time is greater than 10s, and dilution post-sampling flue-gas temperature is lower than 42 DEG C.
Sampling flue gas after dilution enters second level PM2.5The air inlet of whirlwind cutter 17, aerodynamic size are greater than
2.5 microns of particulate matter is segregated into second level PM2.5The ash bucket of whirlwind cutter 17, remaining particulate matter enter with sampling flue gas
Particulate filter 18, particulate matter of the aerodynamic size less than or equal to 2.5 microns is by trap filter；Particulate filter 18
Filtered sampling flue gas enters flue gas mixing arrangement together with the clean dried air-flow in the exit of flue gas heat preservation dehumidification device 3
After 19, it is discharged by sampling pump 22.
It is any to be familiar with although the present invention is disclosed as above with embodiment, its protection scope being not intended to limit the invention
The technical staff of this technology changes and retouches made without departing from the spirit and scope of the invention, should belong to this hair
Bright protection scope.
Claims (6)
1. a kind of high-humidity gas fume dilution sampling device, which is characterized in that including PM10Whirlwind cutter (1), level-one PM2.5Whirlwind is cut
Cutter (2), flue gas heat preservation dehumidification device (3), air compressor (4), compressed air control valve (5), compressed air buffering and place
Manage device (6), dry gas stream control valve (7), secondary dilution control damper (8), level-one dilution air flow control valve (9), level-one
Dilution air flow flowmeter (10), secondary dilution air flow meter (11), dry gas stream flowmeter (12), sampling air flow flowmeter
(13), level-one diluter (14), secondary dilution stream pressure table (15), secondary dilution device (16), second level PM2.5Whirlwind cutter
(17), it particulate filter (18), flue gas mixing arrangement (19), flue gas flow meter (20), flue gas stream control valve (21) and adopts
Sample pumps (22)；The PM10Whirlwind cutter (1), level-one PM2.5Whirlwind cutter (2), flue gas heat preservation dehumidification device (3), sampling
Air flow meter (13), level-one diluter (14), secondary dilution device (16), second level PM2.5Whirlwind cutter (17), particulate matter mistake
Filter (18), flue gas mixing arrangement (19), flue gas flow meter (20), flue gas stream control valve (21) and sampling pump (22) sequentially phase
Even, the secondary dilution stream pressure table (15) is arranged on level-one diluter (14), and the air compressor (4), compression are empty
Gas control valve (5) and compressed air buffering and processing unit (6) are sequentially connected, the compressed air buffering and processing unit (6)
Gas outlet be divided into three tunnels, the first via passes sequentially through dry gas stream control valve (7), dry gas stream flowmeter (12) and flue gas heat preservation
Dehumidification device (3) is connected with the compressed air inlet port of flue gas mixing arrangement (19), and the second tunnel passes sequentially through level-one dilution air flow
Control valve (9) and level-one dilution air flow flowmeter (10) are connected with the compressed air inlet port of level-one diluter (14), third road
Pass sequentially through secondary dilution control damper (8), secondary dilution air flow meter (11), level-one diluter (14) and secondary dilution
Stream pressure table (15) is connected with the compressed air inlet port of secondary dilution device (16)；The PM10Whirlwind cutter (1), level-one
PM2.5Whirlwind cutter (2) and second level PM2.5The bottom of whirlwind cutter (17) has ash bucket.
2. high-humidity gas fume dilution sampling device according to claim 1, which is characterized in that the flue gas keeps the temperature dehumidification device
It (3) is concentric bilayer cylindrical structure, the material of inner layer cylinder wall is perfluorinated sulfonic resin, and the material of outer layer cylindrical wall is stainless
Steel, outer layer cylindrical wall use heating and thermal insulation structure outside.
3. high-humidity gas fume dilution sampling device according to claim 1, which is characterized in that the level-one diluter (14) is
Concentric four layers of cylindrical structure, first layer cylindrical wall is the totally-enclosed microcellular structure of stainless steel from inside to outside, and second layer cylindrical wall is not
Become rusty steel full-closed structure, and third layer cylindrical wall is stainless steel semi-closed structure, and the 4th layer of cylindrical wall is stainless steel full-closed structure.
4. high-humidity gas fume dilution sampling device according to claim 1, which is characterized in that the secondary dilution device (16)
Sampling air flow admission line end is conical structure, which is located at the internal cavity entrance of secondary dilution device (16)
Center, and the secondary dilution air-flow admission line square crossing of conical structure and secondary dilution device (16).
5. high-humidity gas fume dilution sampling device according to claim 1, which is characterized in that the particulate filter (18)
Inside it is provided with condensable particulate matter filter membrane.
6. a kind of method of sampling of high-humidity gas fume dilution sampling device according to any one of claims 1 to 5, feature exist
In the method for sampling is as follows: by PM10Whirlwind cutter (1) and level-one PM2.5Whirlwind cutter (2) is placed in sampling flue
It is interior, or heating and thermal insulation measure is used, it is consistent sampling environment with flue environment；Sampling flue gas enters PM10Whirlwind cutter
(1) after, aerodynamic size greater than 10 microns can trap particulate matter be segregated into PM10The ash bucket of whirlwind cutter (1),
Remaining particulate matter enters level-one PM with sampling flue gas2.5Whirlwind cutter (2), aerodynamic size catching greater than 2.5 microns
Collection particulate matter is segregated into level-one PM2.5The ash bucket of whirlwind cutter (2), remaining particulate matter, which enters flue gas with sampling flue gas, to be protected
Warm dehumidification device (3)；The compressed air that air compressor (4) provides passes sequentially through compressed air control valve (5) and compressed air
Buffering and processing unit (6) are then divided into three tunnels, respectively dry gas stream, level-one dilution air flow and secondary dilution air-flow；It is dry
Air-flow enters the outer layer cylinder of flue gas heat preservation dehumidification device (3) by the compressed air inlet port of flue gas heat preservation dehumidification device (3),
Keeping flue gas heat preservation dehumidification device (3) interior compressed air and sampling flue gas is in the opposite type of flow, controls the air-flow of compressed air
Flow is 2 sampling flue gas flows, while controlling sampling flue gas and compressed air pressure difference as+900~-200 mbar, is heated
The outer layer cylindrical wall of flue gas heat preservation dehumidification device (3) is consistent compressed air temperature with sampling flue-gas temperature, samples flue gas
Middle moisture enters in compressed air by flue gas heat preservation dehumidification device (3) inner layer cylinder wall is reduced to sampling flue gas relative humidity
60% or less；Sampling flue gas enters level-one diluter (14), level-one dilution air flow by the compressed air of level-one diluter (14) into
Port enters the second layer cylinder of level-one diluter (14), keeps level-one dilution air flow and sampling flue gas is in the opposite type of flow,
The flow for controlling level-one dilution air flow is 1.5 sampling flue gas flows, and level-one dilution air flow enters first layer cylinder by micropore
It is mixed with sampling flue gas；Secondary dilution air-flow enters level-one diluter by the compressed air inlet port of level-one diluter (14)
(14) the 4th layer of cylinder flows out level-one diluter (14) after third layer cylinder, keeps secondary dilution in third layer cylinder
Level-one dilution air flow is in the opposite type of flow in air-flow and second layer cylinder；Secondary dilution air-flow enters secondary dilution device (16)
Enter the internal cavity of secondary dilution device (16) behind compressed air inlet pipe road by its cone end, charge air flow passes through
" Venturi effect " makes cone pressure against the ends sample smoke air inlet pressure lower than secondary dilution device (16), passes through " pressure difference
Effect " promotes sampling flue gas to enter secondary dilution device (16), samples flue gas and secondary dilution air-flow in secondary dilution device (16)
Internal cavity is sufficiently mixed；The dilution ratio of secondary dilution device (16) by secondary dilution device (16) sampling smoke air inlet air pressure
It is controlled with secondary dilution air-flow air inlet air pressure；Sample total dilution ratio of the flue gas after level-one dilution and secondary dilution
Control is greater than 20 times, and sampling flue gas total residence time is greater than 10s, and dilution post-sampling flue-gas temperature is lower than 42 DEG C；Adopting after dilution
Sample flue gas enters second level PM2.5The air inlet of whirlwind cutter (17), aerodynamic size are greater than 2.5 microns of particulate matter quilt
It is segregated into second level PM2.5The ash bucket of whirlwind cutter (17), remaining particulate matter enter particulate filter with sampling flue gas
(18), particulate matter of the aerodynamic size less than or equal to 2.5 microns is by trap filter；Particulate filter (18) is filtered
Sampling flue gas enters flue gas mixing arrangement (19) together with the clean dried air-flow in the exit of flue gas heat preservation dehumidification device (3)
Afterwards, it is discharged by sampling pump (22).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068526A (en) * | 2019-04-03 | 2019-07-30 | 华电电力科学研究院有限公司 | A kind of particulate matter on-line dilution sampled measurements system and method |
| CN110118709A (en) * | 2019-04-17 | 2019-08-13 | 华电电力科学研究院有限公司 | One kind can the online cascade sampling measuring system and method for trap particulate matter |
| CN113188854A (en) * | 2021-01-22 | 2021-07-30 | 国网冀北电力有限公司电力科学研究院 | Coal-fired flue gas sampling device |
| CN116242753A (en) * | 2022-12-30 | 2023-06-09 | 山东大学 | Particulate matter monitoring system based on big data and application method thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312695A (en) * | 1992-05-04 | 1993-11-22 | Horiba Ltd | Particulate collector by means of dilute tunneling |
| CN1731127A (en) * | 2005-08-26 | 2006-02-08 | 清华大学 | Diluting and sampling system for particle from fixed combustion source emission |
| US20080060456A1 (en) * | 2006-09-11 | 2008-03-13 | Cummins Filtration Ip, Inc. | Source dilution sampling system for emissions analysis |
| CN103566840A (en) * | 2013-11-04 | 2014-02-12 | 浙江大学 | System and method for producing high-time diluted PM2.5 aerosol |
| CN104075913A (en) * | 2014-07-17 | 2014-10-01 | 北京航空航天大学 | Dilution sampling device for PM2.5 discharged by stationary pollution source |
| CN104458352A (en) * | 2014-12-22 | 2015-03-25 | 天津水泥工业设计研究院有限公司 | Large-flow sampling device for industrial flue gas particulate matters |
| CN104677700A (en) * | 2015-03-17 | 2015-06-03 | 天津市环境监测中心 | Sampling system suitable for sampling fine particles in fixed-source droplet-containing flue gas |
| CN104729890A (en) * | 2015-03-24 | 2015-06-24 | 南京埃森环境技术有限公司 | PM2.5 (Particulate Matter 2.5) source analyzing and sampling device based on flow feedback control |
| CN104792582A (en) * | 2015-05-05 | 2015-07-22 | 青岛精益信电子技术有限公司 | Pollution source fine particulate matter dilution sampling method and device |
| CN107255580A (en) * | 2017-04-26 | 2017-10-17 | 浙江菲达环保科技股份有限公司 | A kind of PM2.5 particles sampling apparatus |
| CN209280388U (en) * | 2018-11-15 | 2019-08-20 | 华电电力科学研究院有限公司 | A kind of high-humidity gas fume dilution sampling device |
-
2018
- 2018-11-15 CN CN201811357457.2A patent/CN109406229B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312695A (en) * | 1992-05-04 | 1993-11-22 | Horiba Ltd | Particulate collector by means of dilute tunneling |
| CN1731127A (en) * | 2005-08-26 | 2006-02-08 | 清华大学 | Diluting and sampling system for particle from fixed combustion source emission |
| US20080060456A1 (en) * | 2006-09-11 | 2008-03-13 | Cummins Filtration Ip, Inc. | Source dilution sampling system for emissions analysis |
| CN103566840A (en) * | 2013-11-04 | 2014-02-12 | 浙江大学 | System and method for producing high-time diluted PM2.5 aerosol |
| CN104075913A (en) * | 2014-07-17 | 2014-10-01 | 北京航空航天大学 | Dilution sampling device for PM2.5 discharged by stationary pollution source |
| CN104458352A (en) * | 2014-12-22 | 2015-03-25 | 天津水泥工业设计研究院有限公司 | Large-flow sampling device for industrial flue gas particulate matters |
| CN104677700A (en) * | 2015-03-17 | 2015-06-03 | 天津市环境监测中心 | Sampling system suitable for sampling fine particles in fixed-source droplet-containing flue gas |
| CN104729890A (en) * | 2015-03-24 | 2015-06-24 | 南京埃森环境技术有限公司 | PM2.5 (Particulate Matter 2.5) source analyzing and sampling device based on flow feedback control |
| CN104792582A (en) * | 2015-05-05 | 2015-07-22 | 青岛精益信电子技术有限公司 | Pollution source fine particulate matter dilution sampling method and device |
| CN107255580A (en) * | 2017-04-26 | 2017-10-17 | 浙江菲达环保科技股份有限公司 | A kind of PM2.5 particles sampling apparatus |
| CN209280388U (en) * | 2018-11-15 | 2019-08-20 | 华电电力科学研究院有限公司 | A kind of high-humidity gas fume dilution sampling device |
Non-Patent Citations (2)
| Title |
|---|
| 吴亚西: "不同状态的空气污染物分离方法的研究", 卫生研究, no. 06 * |
| 李兴华;段雷;郝吉明;易红宏;郭兴明;: "固定燃烧源颗粒物稀释采样系统的研制与应用", 环境科学学报, no. 03 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068526A (en) * | 2019-04-03 | 2019-07-30 | 华电电力科学研究院有限公司 | A kind of particulate matter on-line dilution sampled measurements system and method |
| CN110118709A (en) * | 2019-04-17 | 2019-08-13 | 华电电力科学研究院有限公司 | One kind can the online cascade sampling measuring system and method for trap particulate matter |
| CN110118709B (en) * | 2019-04-17 | 2024-04-12 | 华电电力科学研究院有限公司 | Online grading sampling measurement system capable of capturing particulate matters and online grading sampling measurement method thereof |
| CN113188854A (en) * | 2021-01-22 | 2021-07-30 | 国网冀北电力有限公司电力科学研究院 | Coal-fired flue gas sampling device |
| CN116242753A (en) * | 2022-12-30 | 2023-06-09 | 山东大学 | Particulate matter monitoring system based on big data and application method thereof |
| CN116242753B (en) * | 2022-12-30 | 2024-01-26 | 山东大学 | Particulate matter monitoring system based on big data and application method thereof |
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