CN106855472A - A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and the method for sampling - Google Patents
A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and the method for sampling Download PDFInfo
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- CN106855472A CN106855472A CN201710133959.6A CN201710133959A CN106855472A CN 106855472 A CN106855472 A CN 106855472A CN 201710133959 A CN201710133959 A CN 201710133959A CN 106855472 A CN106855472 A CN 106855472A
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- 238000005070 sampling Methods 0.000 title claims abstract description 122
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000003189 isokinetic effect Effects 0.000 title claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- LBVGBJMIMFRUSV-UHFFFAOYSA-N [C].[Hg] Chemical class [C].[Hg] LBVGBJMIMFRUSV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000001186 cumulative effect Effects 0.000 claims abstract description 8
- 239000003610 charcoal Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 23
- 239000003546 flue gas Substances 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 23
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 9
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 5
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- -1 halogen modified activated carbon Chemical class 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 230000036541 health Effects 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 210000000981 epithelium Anatomy 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003230 hygroscopic agent Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- G01N1/24—Suction devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0623—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the set value given to the control element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Automation & Control Theory (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fluid Mechanics (AREA)
Abstract
The invention discloses a kind of particulate Hg for stationary source and gaseous mercury sampling apparatus and the method for sampling, the device includes：Sampling mouth, sampling gun, cyclone separator, ash bucket, fine grained filter, gaseous mercury sampling pipe, refrigerator, drier, flow controller, activated carbon mercury eliminator, vavuum pump, the cumulative volume table being sequentially connected.Wherein, sampling gun is placed in heating mantle, and cyclone separator, fine grained filter, charcoal absorption pipe are placed in incubator；The invention also discloses the method for sampling of the device；The invention has the advantages that：1. particulate Hg and gaseous mercury sample are gathered simultaneously；2. sampling process insulation, prevents mercury from losing and mercury shape conversion, improves sampling representativeness；3. the two-stage dedusting of cyclone separator and fine grained filter, it is ensured that in the representativeness of dusty circumstances down-sampling high.4. volume flow controllers, it is ensured that isokinetic sampling；5 post active carbon mercury eliminators prevent the mercury of residual from entering air.
Description
Technical field
The present invention relates to a kind of gas sampling assembly, belong to environmental monitoring, and in particular to one kind is used for fixed-contamination
The particulate Hg in source and isokinetic sampling's device of gaseous mercury and the method for sampling.
Background technology
The mercury emissions of stationary source cause tremendous influence to environment, directly threaten the healthy of the mankind, and people compel
Be essential the concentration and composition of stationary source mercury emissions pollutant to be studied.The particulate Hg and gaseous mercury of China's stationary source are adopted
Sample equipment relies primarily on import, and the method for sampling approved in the world at present mainly has the 30B methods of U.S. EPA and the ASTM in the U.S.
Ontario method, two methods have features, while the part that comes with some shortcomings.
1.EPA30B charcoal absorption sampling methods, are only used for gathering gaseous mercury, it is impossible to gather particulate Hg.
2.EPA30B charcoal absorption sampling methods, it is adaptable to low temperature environment of sampling, high temperature is easily caused the mercury release of absorption,
Cause sampling error.
3.EPA30B charcoal absorption sampling methods, adsorption tube is placed in sampling gun top, in stationary source dustiness epipodium
Under border, can cause to adsorb blockage, the method cannot be used for dirt Environment features high.
4. Ontario sampling method belongs to wet chemical absorption, and spot sampling operation requires cumbersome, glassware cleaning complexity,
Introduce error possibility big.Air-tightness requirement is high, and liquid suck-back phenomenon easily occurs in gas leakage, causes sampling to fail.
5. Ontario sampling method chemical absorbing liquid digestion process is cumbersome, and reagent is impure to influence Low Concentration Mercury (100ng/l)
Detection, it is necessary to adjustment absorbing liquid oxidation-reduction quality in time, is otherwise easily caused bivalent mercury loss in absorbing liquid, influence sampling generation
Table.
6. sulfur dioxide is less than limit value in Ontario sampling method requirement stationary source, and content of sulfur dioxide is high to cause absorbing liquid
The variation of valence of middle mercury, impact analysis result causes sampling to fail.
The content of the invention
Based on above-mentioned present situation, the present invention devises a kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and adopts
Quadrat method, it uses two-stage dust removal to obtain particulate Hg sample, while avoiding the adsorption loss of gaseous mercury；Particulate Hg and gaseous mercury
Sampling process keep high temperature, prevent from condensing the mercury adsorption loss for causing.Stationary source particulate Hg of the invention is gentle
The technical indicator of state mercury sampling apparatus fully meets U.S. EPA 30B quality assurances and control is required, improves the sampling of stationary source mercury
Representativeness, have the advantages that applied widely, easy to operate, sampling efficiency is high.
The present invention is solved above-mentioned technical problem and is mainly resolved by subordinate's technical scheme：
A kind of particulate Hg of stationary source and isokinetic sampling's device of gaseous mercury, including be sequentially connected sampling mouth, adopt
Sample rifle, cyclone separator, fine grained filter, gaseous mercury sampling pipe, refrigerator, drier, flow controller, the activated carbon removal of mercury
Device, vavuum pump and cumulative volume table, wherein, the sampling gun is wrapped in nickel chromium triangle grid lines heat tracing set, and the heat tracing set is installed
There is temp probe；The cyclone separator, fine grained filter, gaseous mercury sampling pipe are placed in incubator；Wherein described sampling
Pitot tube is connected between mouth and the sampling gun, one end that the sampling gun is connected with the cyclone separator is also associated with
Tachymeter, wherein, the tachymeter calculates the flow velocity of flue gas at sampling mouth according to pitometer.
Preferably, the wherein described sampling gun of invention includes quartzy thief rod, and the nickel chromium triangle grid lines heat tracing set is wrapped in institute
State outside quartzy thief rod.
Preferably, heater strip and temperature probe, and the incubator outer wrapping are installed in the wherein described incubator of invention
There is heat-barrier material.
Preferably, invention wherein cyclone separator bottom connection ash bucket, the outlet of the cyclone separator with it is described
Fine grained filter is communicated, and has filter membrane, gas described in the fine grained filter outlet connection two-way in the fine grained filter
State mercury sampling pipe, the built-in charcoal absorption sampling pipe of gaseous mercury sampling pipe, its outlet is connected with the refrigerator.
Preferably, the wherein described refrigerator of invention includes refrigeration aluminium ingot and the cooling piece being connected with refrigeration aluminium ingot, the system
The outlet of cooler is connected by liquid-collecting bottle with the drier.
Preferably, the wherein described drier of invention includes the hygroscopic agent that drying and Qi Nei are set.
Preferably, the wherein described flow controller of invention is provided with temperature point on inlet channel, flow velocity and stream
Amount adjustment valve.
Preferably, the wherein described vavuum pump of invention is vane vavuum pump.
Preferably, the wherein described activated carbon mercury eliminator of invention includes the removal of mercury pipe containing halogen modified activated carbon, described to remove
The port of export of mercury pipe is communicated with the vavuum pump.
Preferably, inventing the cumulative volume table includes photoelectric detector and epithelium flowmeter.
Isokinetic sampling's method of the particulate Hg of described stationary source and isokinetic sampling's device of gaseous mercury, its feature exists
In,
Before sampling, sampling apparatus air-tightness, sampling volume at least 2nm are checked3More than；Nickel chromium triangle grid lines heat tracing set (4) adds
Heat makes sampling gun (3) constant temperature, the temperature of the quartzy thief rod in control sampling gun (3) more than 120 DEG C, to prevent smoke condensation
And block；Pressure difference from Pitot tube (2) to tachymeter (16) feedback sample mouth (1) place, tachymeter (16) is further according to Gas Parameters
Flue gas flow rate is calculated, the flow controller (12) of adjustment two-way sampling extremely sets flow, it is ensured that isokinetic sampling；Control incubator
Temperature prevents the blocking pipeline that condenses more than 120 DEG C；Cyclone separator (6), fine grained filter (8) and gaseous mercury sampling pipe
(9) be particulate Hg and gaseous mercury sample unit, flue gas isolates most of particle in cyclone separator (6), through meticulous
Grain filter (8) two-stage dust removal, two parts particulate matter is the particulate Hg sample of collection；Flue gas is by fine grained filter (8) point
It is two-way, is each attached to gaseous mercury sampling pipe (9), gathers gaseous mercury；Refrigerator (10) by itself cooling fin, by what is flowed through
Flue gas is cooled to less than 30 DEG C, and actual samples body is tried to achieve in the real-time traffic measurement and time integral according to flow controller (12)
Product, is converted to the flue gas volume under mark condition butt state；Cumulative volume table (15) carries out accounting check and correction to obtaining flue gas volume；It is living
Property charcoal mercury eliminator (13) built-in halogen modified activated carbon, the gaseous mercury that flows through of absorption, environmental protection and health.
Compared to the prior art compared with, the invention has the advantages that：
1. sampling gun whole process heat tracing, is prevented from mercuric adsorption loss in sampling process；2. cyclone separator and thin
Particulate filter constant speed synchronous acquisition particulate Hg sample, two-stage dust removal causes that sampler can adapt to dirt sampling environment high；3. protect
Incubator holding high temperature can prevent the conversion of mercury shape in cyclone separator and fine grained filter, it is ensured that the sampling of gaseous mercury is represented
Property；4. tachymeter measures flow velocity according to Pitot tube pressure difference, and flow controller adjusts flow according to the flow velocity of tachymeter, it is ensured that constant speed
Sampling；5. flow controller and cumulative volume table improve the measuring accuracy of sampling volume；6. activated carbon mercury eliminator is used to prevent
Gaseous mercury in flue gas enters air, pollutes environmental and human health impacts.
Brief description of the drawings
Fig. 1 is that a kind of particulate Hg of stationary source and the constant speed of gaseous mercury of an implementation method of the invention are adopted
Sampling device structure chart.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is further elaborated with.In Fig. 1, adopt
Sample mouth 1, Pitot tube 2, sampling gun 3, nickel chromium triangle grid lines heat tracing set 4, incubator 5, cyclone separator 6, the filtering of ash bucket 7, fine grained
Device 8, gaseous mercury sampling pipe 9, refrigerator 10, drier 11, flow controller 12, activated carbon mercury eliminator 13, vavuum pump 14, accumulation
Volume table 15, tachymeter 16.
In the present invention, as shown in figure 1, the front-end architecture of isokinetic sampling's device is mainly consisted of：Sampling mouth 1, sampling
Rifle 3, nickel chromium triangle grid lines heat tracing set 4, Pitot tube 2 and tachymeter 16.Connected using Teflon cutting ferrule between sampling mouth 1 and sampling gun 3
Connect and seal；The heating of heat tracing set 4 makes the constant temperature of sampling gun 3, the temperature of the quartzy thief rod in control sampling gun 3 more than 120 DEG C,
Blocked with preventing smoke condensation；, to the pressure difference at the feedback sample mouth 1 of tachymeter 16, tachymeter 16 is further according to cigarette for Pitot tube 2
Gas parameter calculates flue gas flow rate, the flow controller 12 that adjustment two-way is sampled to setting flow, it is ensured that isokinetic sampling.
The afterbody of sampling gun 3 connects cyclone separator 6, and cyclone separator 6, ash bucket 7, fine grained filter 8 and gaseous mercury are adopted
Sample pipe 9 is located in incubator 5, the also built-in heater strip of incubator 5, external heat-barrier material, to control the temperature of incubator at 120 DEG C
More than, prevent the blocking pipeline that condenses.
Cyclone separator 6, fine grained filter 8 and gaseous mercury sampling pipe 9 are the sample unit of particulate Hg and gaseous mercury, cigarette
Gas isolates most of particle in cyclone separator 6, and by the two-stage dust removal of fine grained filter 8, two parts particulate matter is to adopt
The particulate Hg sample of collection；8 points by fine grained filter of flue gas is two-way, is each attached to gaseous mercury sampling pipe 9, gathers gaseous state
Mercury.
By itself cooling fin, the flue gas that will be flowed through is cooled to less than 30 DEG C to refrigerator 10, according to flow controller 12
Real-time traffic is measured and time integral tries to achieve actual samples volume, is converted to the flue gas volume under mark condition butt state.Accumulative body
15 pairs, table of product obtains flue gas volume carries out accounting check and correction.
The built-in halogen modified activated carbon of activated carbon mercury eliminator 13, the gaseous mercury that absorption is flowed through, environmental protection and health.
Before sampling, sampling apparatus air-tightness, sampling volume at least 2nm are checked3More than.
The particulate Hg of stationary source of the invention and isokinetic sampling's device said device features rational structure of gaseous mercury are compact,
The flue gas of heat tracing whole first gathers particulate Hg sample by separating dedusting, and point two-way is sampled into gaseous mercury after flue gas ash removal
Pipe, subsequent flue gas, by flow controller, enters back into activated carbon mercury eliminator by dehumidifying, and accumulative body is entered after being pumped out through vacuum
Product table.The dedusting of whole flow process elder generation, prevents absorption of the particulate matter to gaseous mercury, the collection of gaseous mercury sample is then carried out again, effectively
Mercury shape conversion and mercury loss in sampling process are prevented, and can simultaneously collect particulate Hg and gaseous mercury.
Specific embodiment described herein is only that spirit of the present invention is illustrated.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Although more used sampling mouth 1, Pitot tube 2, sampling gun 3, heat tracing cover 4, incubator 5, cyclonic separation herein
Device 6, ash bucket 7, fine grained filter 8, gaseous mercury sampling pipe 9, refrigerator 10, drier 11, flow controller 12, activated carbon are removed
The terms such as mercury device 13, vavuum pump 14, cumulative volume table 15, tachymeter 16, particulate Hg, gaseous mercury, but be not precluded from using other
The possibility of term.Using these terms just for the sake of easily describing and explaining essence of the invention, it is construed as
The additional limitation of any one is all disagreed with spirit of the present invention.
The above only further illustrates present disclosure with embodiment, in order to be easier to understand, but does not represent
Embodiments of the present invention are only limitted to this, and any technology done according to the present invention extends or recreates, by protection of the invention.
Claims (10)
1. isokinetic sampling's device of a kind of particulate Hg of stationary source and gaseous mercury, it is characterised in that including what is be sequentially connected
Sampling mouth (1), sampling gun (3), cyclone separator (6), fine grained filter (8), gaseous mercury sampling pipe (9), refrigerator (10),
Drier (11), flow controller (12), activated carbon mercury eliminator (13), vavuum pump (14) and cumulative volume table (15), wherein, adopt
Sample rifle (3) is wrapped in nickel chromium triangle grid lines heat tracing set (4), and nickel chromium triangle grid lines heat tracing set (4) is provided with temp probe；Cyclonic separation
Device (6), fine grained filter (8) and gaseous mercury sampling pipe (9) are placed in incubator (5)；Sampling mouth (1) and sampling gun (3) it
Between be connected with Pitot tube (2), one end that sampling gun (3) is connected with cyclone separator (6) is also associated with tachymeter (16), its
In, tachymeter (16) calculates the flow velocity of sampling mouth (1) place flue gas according to the pressure difference of Pitot tube (2).
2. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that sampling gun (3) includes quartzy thief rod, nickel chromium triangle grid lines heat tracing set (4) is wrapped in outside the quartzy thief rod.
3. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that heater strip and temperature probe are installed in incubator (5), and incubator (5) is wrapped with heat-barrier material.
4. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that cyclone separator (6) bottom connects ash bucket (7), the outlet of cyclone separator (6) is communicated with fine grained filter (8).
5. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that the outlet for having filter membrane, fine grained filter (8) in fine grained filter (8) connects two-way gaseous mercury sampling pipe (9), gas
The built-in charcoal absorption sampling pipe of state mercury sampling pipe (9).
6. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that the cooling piece that refrigerator (10) is connected including refrigeration aluminium ingot and with refrigeration aluminium ingot, the outlet of refrigerator (10) passes through liquid collecting
Bottle is connected with drier (11).
7. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that flow controller (12) is provided with temperature point on inlet channel, flow velocity and flow rate regulating valve.
8. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that activated carbon mercury eliminator (13) is the removal of mercury pipe containing halogen modified activated carbon；Vavuum pump (14) is vane vavuum pump；It is accumulative
Volume table (15) includes photoelectric detector and epithelium flowmeter.
9. isokinetic sampling's device of a kind of particulate Hg of stationary source according to claim 1 and gaseous mercury, its feature
It is that Teflon cutting ferrule connection and sealing are used between sampling mouth (1) and sampling gun (3).
10. the constant speed of isokinetic sampling's device of the particulate Hg of the stationary source described in any one of claim 1 to 9 and gaseous mercury
The method of sampling, it is characterised in that
Before sampling, sampling apparatus air-tightness, sampling volume at least 2nm are checked3More than；Nickel chromium triangle grid lines heat tracing set (4) heating makes to adopt
Sample rifle (3) constant temperature, the temperature of the quartzy thief rod in control sampling gun (3) is blocked up more than 120 DEG C with preventing smoke condensation
Plug；Pressure difference from Pitot tube (2) to tachymeter (16) feedback sample mouth (1) place, tachymeter (16) further according to Gas Parameters calculate
Flue gas flow rate, the flow controller (12) of adjustment two-way sampling extremely sets flow, it is ensured that isokinetic sampling；Control the temperature of incubator
More than 120 DEG C, the blocking pipeline that condenses is prevented；Cyclone separator (6), fine grained filter (8) and gaseous mercury sampling pipe (9) are
The sample unit of particulate Hg and gaseous mercury, flue gas isolates most of particle in cyclone separator (6), is filtered by fine grained
Device (8) two-stage dust removal, two parts particulate matter is the particulate Hg sample of collection；Flue gas is divided into two-way by fine grained filter (8),
Gaseous mercury sampling pipe (9) is each attached to, gaseous mercury is gathered；Refrigerator (10) is by itself cooling fin, and the flue gas that will be flowed through is cold
But to less than 30 DEG C, actual samples volume is tried to achieve in real-time traffic measurement and time integral according to flow controller (12), is converted
Flue gas volume under mark condition butt state；Cumulative volume table (15) carries out accounting check and correction to obtaining flue gas volume；Activated carbon is removed
The built-in halogen modified activated carbon of mercury device (13), the gaseous mercury that absorption is flowed through, environmental protection and health.
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| CN201710133959.6A CN106855472A (en) | 2017-03-08 | 2017-03-08 | A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and the method for sampling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710133959.6A CN106855472A (en) | 2017-03-08 | 2017-03-08 | A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and the method for sampling |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402144A (en) * | 2017-08-02 | 2017-11-28 | 东南大学 | A kind of method for carrying out gas mercury measurement of concetration using modified flying dust |
| CN107462447A (en) * | 2017-08-02 | 2017-12-12 | 东南大学 | A kind of device that gas mercury measurement of concetration is carried out using modified flying dust |
| CN107727457A (en) * | 2017-11-09 | 2018-02-23 | 中国华能集团清洁能源技术研究院有限公司 | A kind of mercury emissions sampling monitoring device and method being applied under high grey flue gas condition |
| CN107991144A (en) * | 2017-11-30 | 2018-05-04 | 宁夏大学 | A kind of coal pyrolysis gas Elemental Mercury sampling system |
| CN108120045A (en) * | 2017-12-12 | 2018-06-05 | 优泰科技（深圳）有限公司 | Semiconductor cooling device |
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| CN110186725A (en) * | 2019-05-28 | 2019-08-30 | 东南大学 | A kind of system and method collecting and surveying flue gas and fly ash granule in high-temperature burner hearth |
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| CN112387051A (en) * | 2020-11-13 | 2021-02-23 | 阔创实业(上海)有限公司 | Gas washing device capable of realizing high cleanliness gas |
| CN113324805A (en) * | 2021-05-19 | 2021-08-31 | 福建省锅炉压力容器检验研究院 | Nano-gold enrichment tube, preparation method thereof, and device and method for sampling mercury in flue gas |
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