CN206563669U - A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling's device - Google Patents
A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling's device Download PDFInfo
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- CN206563669U CN206563669U CN201720219355.9U CN201720219355U CN206563669U CN 206563669 U CN206563669 U CN 206563669U CN 201720219355 U CN201720219355 U CN 201720219355U CN 206563669 U CN206563669 U CN 206563669U
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Abstract
The utility model discloses a kind of particulate Hg for stationary source and gaseous mercury isokinetic sampling's device, including：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；Therefore, the utility model has the following advantages that：1. particulate Hg and gaseous mercury sample are gathered simultaneously；2. sampling process is incubated, prevents mercury from losing and mercury shape conversion, improve sampling representativeness；3. the two-stage dedusting of cyclone separator and fine grained filter, it is ensured that in the representativeness of high dusty circumstances down-sampling.4. volume flow controllers, it is ensured that isokinetic sampling；5 post active carbon mercury eliminators prevent the mercury of residual to be discharged into air.
Description
Technical field
The utility model is related to a kind of gas sampling assembly, belongs to environmental monitoring, and in particular to one kind is used to fix
The particulate Hg of pollution sources and isokinetic sampling's device of gaseous mercury.
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, it can cause to adsorb blockage, the method cannot be used for high dirt Environment features.
4. Ontario sampling method belongs to wet chemical absorption, spot sampling operation requires cumbersome, and glassware cleaning is complicated,
Introduce error possibility big.Air-tightness requires 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, 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 in absorbing liquid bivalent mercury and loses, influence sampling generation
Table.
6. Ontario sampling method requires that sulfur dioxide is less than limit value in stationary source, content of sulfur dioxide height can 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 utility model devises a kind of stationary source particulate Hg and gaseous mercury isokinetic sampling dress
Put, it uses two-stage dust removal to obtain particulate Hg sample, while avoiding the adsorption loss of gaseous mercury；Particulate Hg and gaseous mercury are adopted
Sample process keeps high temperature, and prevent from condensing the mercury adsorption loss caused.It is gentle according to stationary source particulate Hg of the present utility model
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 utility model solves 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, wherein the sampling gun includes quartzy thief rod, the nickel chromium triangle grid lines heat tracing set is wrapped in the stone
Outside English thief rod.
Preferably, wherein being provided with heater strip and temperature probe in the incubator, and the incubator be wrapped with every
Hot material.
Preferably, wherein the cyclone separator bottom connect ash bucket, the outlet of the cyclone separator with described thin
Grain filter is communicated, and has filter membrane, gaseous mercury described in the fine grained filter outlet connection two-way in the fine grained filter
Sampling pipe, charcoal absorption sampling pipe built in the gaseous mercury sampling pipe, its outlet is connected with the refrigerator.
Preferably, wherein the refrigerator includes refrigeration aluminium ingot and the cooling piece being connected with refrigeration aluminium ingot, the refrigerator
Outlet be connected by liquid-collecting bottle with the drier.
Preferably, wherein the drier includes the hygroscopic agent that drying and Qi Nei are set.
Preferably, wherein temperature point, flow velocity and flow that the flow controller is provided with inlet channel are adjusted
Whole valve.
Preferably, wherein the vavuum pump is vane vavuum pump.
Preferably, wherein the activated carbon mercury eliminator includes the removal of mercury pipe containing halogen modified activated carbon, the removal of mercury pipe
The port of export communicated with the vavuum pump.
Preferably, the cumulative volume table includes photoelectric detector and epithelium flowmeter.
Compared to the prior art compared with the utility model has the following advantages that：
1. sampling gun whole process heat tracing, can prevent 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 sampler to can adapt to high dirt sampling environment；3. protect
Incubator keeps high temperature to 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, 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 is discharged into air, pollutes environmental and human health impacts.
Brief description of the drawings
Fig. 1 be according to the particulate Hg of stationary source of an embodiment of the present utility model a kind of and gaseous mercury etc.
Fast sampling apparatus structure chart.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is further elaborated with.Fig. 1
In, sampling mouth 1, Pitot tube 2, sampling gun 3, nickel chromium triangle grid lines heat tracing set 4, incubator 5, cyclone separator 6, ash bucket 7, fine grained
Filter 8, gaseous mercury sampling pipe 9, refrigerator 10, drier 11, flow controller 12, activated carbon mercury eliminator 13, vavuum pump 14,
Cumulative volume table 15, tachymeter 16.
In the utility model, as shown in figure 1, the front-end architecture of isokinetic sampling's device is mainly consisted of：Sampling mouth 1,
Sampling gun 3, nickel chromium triangle grid lines heat tracing set 4, Pitot tube 2 and tachymeter 16.Sample and Teflon Long Card is used between mouth 1 and sampling gun 3
Cover connection and sealing；The heating of heat tracing set 4 makes the temperature of the quartzy thief rod in the constant temperature of sampling gun 3, control sampling gun 3 at 120 DEG C
More than, blocked with preventing smoke condensation；Pitot tube 2 is to the pressure difference at the feedback sample mouth 1 of tachymeter 16, the root again of tachymeter 16
Flue gas flow rate, the flow controller 12 that adjustment two-way is sampled to setting flow, it is ensured that isokinetic sampling are calculated according to Gas Parameters.
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, by the two-stage dust removal of fine grained filter 8, and 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.
The flue gas flowed through is cooled to less than 30 DEG C by refrigerator 10 by itself cooling fin, 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 of table of product obtains flue gas volume and carries out accounting check and correction.
Halogen modified activated carbon built in activated carbon mercury eliminator 13, adsorbs the gaseous mercury flowed through, environmental protection and health.
Before sampling, sampling apparatus air-tightness, sampling volume at least 2nm are checked3More than.
According to isokinetic sampling's device said device features rational structure of the particulate Hg of stationary source of the present utility model and gaseous mercury
Compact, the flue gas of heat tracing whole first gathers a point two-way after particulate Hg sample, flue gas ash removal and enters gaseous mercury by separation dedusting
Sampling pipe, subsequent flue gas, by flow controller, enters back into activated carbon mercury eliminator by dehumidifying, enters tired after being pumped out through vacuum
Count volume 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,
Mercury shape conversion and mercury loss in sampling process are effectively prevented, and particulate Hg and gaseous mercury can be collected simultaneously.
Specific embodiment described herein is only that the utility model spirit is illustrated.The utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although more herein used sampling mouth 1, Pitot tube 2, sampling gun 3, heat tracing set 4, incubator 5, cyclonic separation
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 present utility model, they are solved
Any additional limitation is interpreted into all to disagree with the utility model spirit.
It is described above that content of the present utility model is only further illustrated with embodiment, in order to be easier to understand, but not
Represent embodiment of the present utility model and be only limitted to this, any technology done according to the utility model extends or recreated, by
Protection of the present utility model.
Claims (9)
1. a kind of particulate Hg of stationary source and isokinetic sampling's device of gaseous mercury, it is characterised in that including what is be sequentially connected
Sample 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)；Sample mouth (1) and sampling gun (3) it
Between be connected with Pitot tube (2), sampling gun (3) is also associated with tachymeter (16) with one end that cyclone separator (6) is connected, its
In, tachymeter (16) calculates the flow velocity for mouth (1) place flue gas of sampling according to the pressure difference of Pitot tube (2).
2. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, 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. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, heater strip and temperature probe is installed in incubator (5), and incubator (5) is wrapped with heat-barrier material.
4. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, cyclone separator (6) bottom connection ash bucket (7), the outlet of cyclone separator (6) is communicated with fine grained filter (8).
5. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is there is filter membrane, the outlet connection two-way gaseous mercury sampling pipe (9) of fine grained filter (8), gas in fine grained filter (8)
Charcoal absorption sampling pipe built in state mercury sampling pipe (9).
6. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, refrigerator (10) includes refrigeration aluminium ingot and the cooling piece being connected with refrigeration aluminium ingot, and the outlet of refrigerator (10) passes through liquid collecting
Bottle is connected with drier (11).
7. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, flow controller (12) is provided with temperature point, flow velocity and flow rate regulating valve on inlet channel.
8. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, 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. a kind of particulate Hg of stationary source according to claim 1 and isokinetic sampling's device of gaseous mercury, its feature
It is, Teflon cutting ferrule connection and sealing is used between sampling mouth (1) and sampling gun (3).
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| CN201720219355.9U CN206563669U (en) | 2017-03-08 | 2017-03-08 | A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling's device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855472A (en) * | 2017-03-08 | 2017-06-16 | 中国华能集团清洁能源技术研究院有限公司 | A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and the method for sampling |
| CN107655728A (en) * | 2017-11-09 | 2018-02-02 | 中国华能集团清洁能源技术研究院有限公司 | The device and method of low volatility trace element sampling monitoring suitable for flue gas |
-
2017
- 2017-03-08 CN CN201720219355.9U patent/CN206563669U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855472A (en) * | 2017-03-08 | 2017-06-16 | 中国华能集团清洁能源技术研究院有限公司 | A kind of stationary source particulate Hg and gaseous mercury isokinetic sampling device and the method for sampling |
| CN107655728A (en) * | 2017-11-09 | 2018-02-02 | 中国华能集团清洁能源技术研究院有限公司 | The device and method of low volatility trace element sampling monitoring suitable for flue gas |
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