CN104535725B - Monitoring system - Google Patents
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- CN104535725B CN104535725B CN201410853961.7A CN201410853961A CN104535725B CN 104535725 B CN104535725 B CN 104535725B CN 201410853961 A CN201410853961 A CN 201410853961A CN 104535725 B CN104535725 B CN 104535725B
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Abstract
The invention provides a monitoring system used for monitoring the content of mercury in monitored gas. The monitoring system comprises a collecting device, a divalent mercury removal device and a detection device. The collecting device is used for collecting the monitored gas from a monitored environment, the divalent mercury removal device is used for transforming chemical compounds containing the mercury in the monitored gas collected by the collecting device into elemental mercury and outputting gas containing the elemental mercury, and the detection device is used for detecting the content of the elemental mercury output by the divalent mercury removal device. The monitoring system is characterized by further comprising a calibration device used for generating divalent mercury standard gas and introducing the divalent mercury standard gas into the collecting device. A monitoring instrument in the monitoring system can be calibrated in real time, and therefore the monitoring result is accurate.
Description
Technical field
The application is related to gas monitoring techniques field, more particularly to a kind of monitoring system, for monitoring monitored gas
The content of middle mercury.
Background technology
Heavy metal pollution refers to the environmental pollution caused by heavy metal or its compound, mainly by waste gas discharge of wastewater institute
Cause, heavy metal pollution can directly be detrimental to health and cause the deterioration of environmental quality, accordingly, it would be desirable to in waste gas discharge of wastewater
The content of front heavy metal is monitored, and is monitored whether meet discharge standard to it in real time.
In the waste gas of discharge, heavy metal mainly exists with the form of elemental form or compound, common monitoring side
Method can only be analyzed to the heavy metal of elemental form, therefore, the content of beary metal in waste gas is monitored, need chemical combination in waste gas
The heavy metal of thing form changes into the heavy metal of elemental form.
Monitoring to heavy metal Hg in waste gas, mainly obtains monitoring result by artificial sample, process and detection, works
Personnel gather waste gas sample in monitored environment, as monitored gas, then through processing so that in monitored gas
Bivalent mercury is converted into Elemental Mercury, mercury in eventually passing the content for detecting Elemental Mercury in monitored gas so as to draw monitored gas
Content, test is accurate, but, the result drawn by personal monitoring has certain hysteresis quality.
Go out monitored environment from the content of mercury in monitored gas in order to real-time monitoring, a kind of monitoring was occurred in that later
System, the detecting system includes harvester, bivalent mercury removal device and detection means, and wherein harvester gathers monitored ring
Monitored gas in border, the bivalent mercury in the monitored gas that bivalent mercury removal device gathers harvester is converted into simple substance
Mercury, last detection means detects again the content of the mercury in the monitored gas after the process of Jing bivalent mercuries removal device so as to draw
Monitoring result.But, due to the bivalent mercury in monitored gas during acquired device and bivalent mercury removal device
The lossy efficiency so as to cause the bivalent mercury conversion of impact bivalent mercury removal device causes monitoring system monitoring result inaccurate.
The content of the invention
The present invention provides a kind of monitoring system, for monitoring monitored gas in mercury content, the monitoring system is used to solve
The certainly inaccurate problem of monitoring system monitoring result.
The technical scheme that the present invention is provided is as follows：
A kind of monitoring system, for monitoring monitored gas in mercury content, including for from monitored environment gather
The harvester of monitored gas, it is converted into list for the compound containing mercury in the monitored gas that gathers the harvester
Matter mercury simultaneously exports the bivalent mercury removal device containing elemental mercury gas and the list for detecting the bivalent mercury removal device output
The detection means of the amount of matter mercury, wherein, monitoring system is also included for producing bivalent mercury Standard Gases and by the bivalent mercury standard
Gas is passed through the calibrating installation of the harvester.
Preferably, the calibrating installation is additionally operable to produce Elemental Mercury Standard Gases, and the Elemental Mercury Standard Gases of generation are passed through
The harvester and the detection means.
Preferably, the calibrating installation include carrier gas offer device, compound containing mercury offer device reactant offer device,
Reative cell, vaporization chamber, mixing chamber, first switch and second switch, the carrier gas offer device is connected with the reative cell, described
Carrier gas offer device is connected with the vaporization chamber, and the compound containing mercury offer device is connected with the reative cell, described mercurous
Compound offer device is connected with the vaporization chamber, and the reactant offer device is connected with the reative cell, the reative cell
Connect with the mixing chamber, the vaporization chamber is connected with the mixing chamber, the mixing chamber is connected and institute with the detection means
State mixing chamber to connect with the harvester, the carrier gas that the first switch is used to control in the carrier gas offer device flows into institute
Vaporization chamber or the reative cell are stated, the second switch is used to control the mercurous chemical combination in the compound containing mercury offer device
Logistics enters the vaporization chamber or the reative cell.
Preferably, it is provided with the first metering device between the carrier gas offer device and the first switch, described
One metering device is used to measure the amount of the carrier gas that the carrier gas offer device flows out.
Preferably, it is provided between the carrier gas offer device and first metering device and is dried mercury removal device, institute
State the moisture and mercury in being dried mercury removal device for removing the carrier gas that the carrier gas offer device flows out.
Preferably, it is provided between the compound containing mercury offer device and the second switch for measuring described containing
Second metering device of the amount of the compound containing mercury reagent that mercury compound offer device flows out.
Preferably, the bivalent mercury removal device is additionally operable to absorb the compound containing mercury in the monitored gas.
Preferably, the bivalent mercury removal device is included for the compound containing mercury in monitored gas to be converted into into simple substance
The reforming unit of mercury is enriched with resolver with for carrying out being enriched with the first of parsing to the Elemental Mercury of inverted device output, in institute
State the gas being provided with for controlling reforming unit output described in Jing between reforming unit and the first enrichment resolver to enter
Enter the 3rd switch of the first enrichment resolver, the compound containing mercury in also including for absorbing the monitored gas
Absorption plant is enriched with resolver with for carrying out being enriched with the second of parsing to the Elemental Mercury of absorption plant output described in Jing, in institute
State the gas being provided with for controlling absorption plant output described in Jing between absorption plant and the second enrichment resolver to enter
Enter the 4th switch of the second enrichment resolver, the absorption plant and the reforming unit simultaneously by heat traced pipeline with
The harvester connection.
Preferably,
It is provided between the reforming unit and the first enrichment resolver defeated for removing the reforming unit
Moisture and sour gas is dried deacidification device in the gas for going out；
It is provided between the absorption plant and the second enrichment resolver defeated for removing the absorption plant
The drying device of the moisture in the gas for going out.
Preferably, the bivalent mercury removal device also includes the 3rd metering device and the 4th metering device, the 3rd meter
Amount device is used for the amount of the gas for measuring the first enrichment resolver output, and the 4th metering device is used to measure described
The amount of the gas of the second enrichment resolver output.
Monitoring system provided by the present invention, compared with prior art, because the monitoring system that the present invention is provided includes
Calibrating installation, the calibrating installation can produce bivalent mercury Standard Gases, and bivalent mercury Standard Gases are passed through into harvester, bivalent mercury
Standard Gases are passed through after harvester, and the bivalent mercury in bivalent mercury Standard Gases is converted into Elemental Mercury by Jing bivalent mercuries removal device, inspection
The content of the Elemental Mercury surveyed in the Standard Gases after device detection Jing bivalent mercuries removal device is processed, so as to draw bivalent mercury in Jing
Harvester is realized removing the sampling apparatus in monitoring system and bivalent mercury to the loss during bivalent mercury removal device
The calibration of device so that monitoring result is more accurate.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the monitoring system structural representation that the embodiment of the present invention one is provided；
Fig. 2 is the monitoring system structural representation that the embodiment of the present invention two is provided；
Fig. 3 is a kind of structural representation of calibrating installation in the embodiment of the present invention two；
Fig. 4 is another kind of structural representation of the calibrating installation in the embodiment of the present invention two；
Fig. 5 is the bivalent mercury removal device structural representation in the embodiment of the present invention three；
Fig. 6 is another kind of structural representation of the bivalent mercury removal device in the embodiment of the present invention three；
Fig. 7 is the first enrichment resolver in the embodiment of the present invention three and the second enrichment resolver structural representation.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, below in conjunction with the application reality
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described enforcement
Example is only some embodiments of the present application, rather than the embodiment of whole.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Embodiment one
Please be as shown in figure 1, the embodiment of the present invention provide a kind of monitoring system, the monitoring system is used to monitor monitored gas
The content of middle mercury, including for gathering the harvester 1 of monitored gas from monitored environment, for harvester 1 to be adopted
Compound containing mercury in the monitored gas of collection is converted into Elemental Mercury and exports the bivalent mercury removal device 2 of elemental mercury gas, with
And for detecting the detection means 3 of the amount of the Elemental Mercury that bivalent mercury removal device 2 is exported, wherein, the monitoring system also includes using
The calibrating installation 4 of harvester 1 is passed through in generation bivalent mercury Standard Gases and by bivalent mercury Standard Gases.
Monitoring system provided in an embodiment of the present invention, because including calibrating installation 4, the calibrating installation 4 can produce divalence
Mercury Standard Gases, and the bivalent mercury Standard Gases of generation are passed through in harvester 1, bivalent mercury is flowed to by harvester 1 and is removed
Device 2, the bivalent mercury in bivalent mercury Standard Gases is converted into Elemental Mercury by bivalent mercury removal device 2, is then detected by detection means 3
The content of the Elemental Mercury gone out in the Standard Gases after Jing bivalent mercuries removal device 2 is processed, so as to draw bivalent mercury via collection
Device 1 also show that bivalent mercury is converted into simple substance by bivalent mercury removal device 2 to the loss during bivalent mercury removal device 2
The transformation efficiency of mercury, that is, realize the calibration to harvester 1 and bivalent mercury removal device 2, the result for monitoring monitoring system
Accurately.
Embodiment two
Please as shown in Fig. 2 the monitoring system that the embodiment of the present invention is provided is from the different of embodiment one,
The calibrating installation 4 is additionally operable to produce Elemental Mercury Standard Gases, and the Elemental Mercury Standard Gases of generation are passed through into collection dress
1 is put with detection means 3.
The content of the Elemental Mercury in the gas exported mainly for detection of bivalent mercury removal device 2 due to detection means 3, inspection
The calibration for surveying device 3 directly decides that the monitoring system monitors the accuracy of the content of mercury in monitored gas, therefore, calibration cartridge
Put 4 and the Elemental Mercury Standard Gases of generation be passed through into detection means 3 when detection means 3 does not work, detection means 3 is calibrated,
The accuracy that detection means 3 detects simple substance mercury content can be improved.
A part of mercury in due to monitored gas in the form of simple substance, therefore, in order that monitoring result is accurate,
Elemental Mercury is lost during acquired device 1 to bivalent mercury removal device 2 and calibrates in needing to monitoring gas, this
In bright embodiment, calibrating installation 4 is additionally operable to for the Elemental Mercury Standard Gases of generation to be passed through harvester 1, through harvester 1 and two
Valency mercury removal device 2, is then detected the loss in transmitting procedure by detection means 3, so that monitoring system monitoring result
It is more accurate.
Wherein, as shown in figure 3, calibrating installation 4 includes carrier gas offer device 401, compound containing mercury offer device 402, anti-
Agent offer device 403, reative cell 404, vaporization chamber 405, mixing chamber 406, first switch 407 and second switch 408 are answered, carrier gas is carried
Connect with reative cell 404 for device 401, carrier gas offer device 401 is connected with vaporization chamber 405, compound containing mercury offer device 402
Connect with reative cell 404, compound containing mercury offer device 402 is connected with vaporization chamber 405, reactant offer device 403 with reaction
Room 404 connects, and reative cell 404 is connected with mixing chamber 406, and vaporization chamber 405 is connected with mixing chamber 406, and mixing chamber 406 is filled with detection
Put 3 connections and mixing chamber 406 connected with harvester 1, first switch 407 is used to control the carrier gas in carrier gas offer device 401
Flow in vaporization chamber 405 or reative cell 404, second switch 408 is mercurous in compound containing mercury offer device 402 for controlling
Compound flows into vaporization chamber 405 or reative cell 404.
Wherein, the compound containing mercury reagent in compound containing mercury offer device 402 in the presence of second switch 408 with it is anti-
The reaction in reative cell 404 of the reactant in agent offer device 403 is answered to generate Elemental Mercury, the carrier gas in carrier gas offer device 401
Reative cell 404, the Elemental Mercury that the carrier gas of carrier gas offer device 401 generates reative cell are flowed in the presence of first switch 407
Bring in mixing chamber 406, Elemental Mercury Standard Gases are formed after mixing with carrier gas in mixing chamber 406, Elemental Mercury Standard Gases are from mixing
Flow in room 406 monitoring instrument in monitoring system is calibrated in harvester 1, or Elemental Mercury Standard Gases are from mixing chamber
Detection means 3 is flowed in 406, detection means 3 is individually calibrated；Mercurous chemical combination in compound containing mercury offer device 402
Thing reagent is entered in vaporization chamber 405 in the presence of second switch 408 and evaporated in vaporization chamber 405, carrier gas offer device
Carrier gas in 401 enters vaporization chamber 405 in the presence of first switch 407, and carrier gas is by the compound containing mercury reagent strip after evaporation
Enter mixing chamber 406 and be mixed to form bivalent mercury Standard Gases in mixing chamber 406, bivalent mercury Standard Gases are passed through from mixing chamber 406 and adopt
Acquisition means 1, calibrate to the monitoring instrument in monitoring system.
Carrier gas source of the gas 401 in the embodiment of the present invention is preferably using nitrogen or the air of high pressure compressed.
Compound containing mercury in compound containing mercury offer device 402 is divalence mercury solution, due to bivalent mercury chemical combination in waste gas
Thing is mercury chloride, therefore, divalence mercury solution is preferably mercuric chloride solution.
The reactant that reactant offer device 403 is provided is the reduction that Elemental Mercury can be displaced from divalence mercury solution
Agent.
Reative cell 404 preferably adopts closed reaction vessel, more preferably confined reaction pond.
Please as shown in figure 4, the calibrating installation 4 in the embodiment of the present invention further can also include,
The first metering device 410, the first metering device are provided between carrier gas offer device 401 and first switch 407
410 are used to measure the amount of the carrier gas that carrier gas offer device 401 flows out.
According to the metering of the first metering device 410, flowed out by adjusting the regulation carrier gas of first switch 407 offer device 401
Carrier gas amount, carrier gas and Elemental Mercury or carrier gas and mercuric mixed proportion can be controlled, so as to obtain different mixing ratios
The mercury Standard Gases of example.
In the embodiment of the present invention, it is provided between the metering device 410 of carrier gas offer device 401 and first and is dried removal of mercury dress
411 are put, mercury removal device 411 is dried for the moisture and mercury in the carrier gas for removing the outflow of carrier gas offer device 401.
If containing mercury either mercury compound or moisture in the carrier gas flowed out in carrier gas offer device 401, in mercury standard
During gas is produced, the content of mercury in mercury Standard Gases or mercuric content can be impacted, so as to monitoring instrument
Demarcation impact, the final accuracy for affecting mercury monitoring result in waste gas.Being dried the setting of mercury removal device 411 proposes carrier gas
The carrier gas flowed out for device 401 eliminates moisture and mercury in carrier gas through being dried mercury removal device 411, it is to avoid in carrier gas
The impact caused to the demarcation of monitoring instrument in the mixed such as mercury Standard Gases of moisture, makes the monitoring result of mercury in waste gas more accurate.
In this example, reactant power set 412 are provided between reactant offer device 403 and reative cell 404, instead
Agent power set 412 are answered for the reactant in reactant offer device 403 to be delivered in reative cell 404.
Wherein, reactant power set 412 are preferably adopted and take liquid pump.
In the embodiment of the present invention, it is provided between compound containing mercury offer device 402 and second switch 408 for measuring
Second metering device 413 of the amount of the compound containing mercury reagent that compound containing mercury offer device 402 flows out.
The metering of compound containing mercury offer device 402 is flowed out compound containing mercury reagent according to the second metering device 413,
The amount of the compound containing mercury reagent that compound containing mercury offer device 402 flows out is controlled by second switch 408, being capable of precise control
The amount that Elemental Mercury is generated in reative cell 404, so that the amount of Elemental Mercury is effectively controlled in Elemental Mercury Standard Gases；Also being capable of essence
The amount that really bivalent mercury is evaporated in control vaporization chamber 405, so that the mercuric amount in bivalent mercury Standard Gases is effectively controlled.
In the embodiment of the present invention, second switch 408 preferably adopts three-way switch valve.
First switch can be that three-way switch valve, or the carrier gas in by carrier gas offer device are oriented to vaporization chamber
The the first control valve installed on the conduit for connecting in 405 and with vaporization chamber 405, by the carrier gas directed response in carrier gas offer device
The the second control valve installed on the conduit for connecting in room 404 and with reative cell 404.
When embodiment of the present invention lieutenant colonel standard apparatus 4 produce Elemental Mercury Standard Gases, the three-way switch valve of second switch 408 is to steaming
The one end for sending out room 405 is closed, and opens to one end of reative cell 404, and the chlorination mercury standard solution of the preset concentration for preparing is led to
The metering for crossing the second metering device 413 is injected in reative cell 404 in the presence of three-way switch valve according to constant flow, reaction
Liquid pump pump such as excessive reducing solution is taken beforehand through reactant power set 412 in room 404, is pumped in advance in reative cell 404
Reducing solution and mercuric chloride solution react generation Elemental Mercury, meanwhile, by the metering of the first metering device 410, second
Carrier gas in the presence of control valve in carrier gas offer device 401 is that nitrogen is entered in reative cell 404 according to constant flow, will be single
Matter mercury is taken out of in the form of gas, then Elemental Mercury Standard Gases is mixed to form in mixing chamber 406, finally from mixing chamber 406
Flow into detection means 3 or harvester 1 realizes the calibration to monitoring instrument.
When embodiment of the present invention lieutenant colonel standard apparatus 4 produce bivalent mercury Standard Gases, the three-way switch valve of second switch 408 is to steaming
The one end for sending out room 405 is in open mode, and the one end to reative cell 404 is closed, by the preset concentration for preparing
Chlorination mercury standard solution is injected in the presence of three-way switch valve by the metering of the second metering device 413 according to constant flow
It is molten hence into the mercury chloride standard in vaporization chamber 405 because temperature is more than 200 DEG C in vaporization chamber 405 in vaporization chamber 405
Liquid can evaporate, meanwhile, by the metering of the first metering device 410, in carrier gas offer device 401 in the presence of the first control valve
Carrier gas to be nitrogen enter in vaporization chamber 405 according to constant flow, bivalent mercury is taken out of in the form of gas, then mixed
Close in room 406 and be mixed to form bivalent mercury Standard Gases, finally flow into harvester 1 from mixing chamber 406, realize the school to monitoring instrument
It is accurate.
It should be noted that the calibrating installation provided in the embodiment of the present invention can produce mercury Standard Gases i.e. Elemental Mercury standard
Gas or bivalent mercury Standard Gases, it is envisioned that according to actual monitoring demand, compound containing mercury reagent source can also be containing prison in need
The compound agent source of other heavy metals surveyed, reactant source can be can be by the change of other heavy metals containing monitoring in need
The reducing solution of the heavy metal displacement in compound reagent, so as to the device for providing according to embodiments of the present invention is produced prison is needed accordingly
The simple substance Standard Gases of the heavy metal of survey or the Standard Gases of various valence states.
Embodiment three
Compared with embodiment one or embodiment two, its difference is monitoring system provided in an embodiment of the present invention,
Bivalent mercury removal device 2 in the embodiment of the present invention is additionally operable to absorb the compound containing mercury in monitored gas.
Please be as shown in figure 5, the bivalent mercury removal device 2 in the embodiment of the present invention, including for by monitored gas
Compound containing mercury is converted into the reforming unit 201 of Elemental Mercury and is used to be enriched with the Elemental Mercury of the output of inverted device 201
First enrichment resolver 202 of parsing, is provided with for controlling between the enrichment resolver 202 of reforming unit 201 and first
The gas for making the output of inverted device 201 enters the 3rd switch 203 of the first enrichment resolver 202, bivalent mercury removal device 2
The absorption plant 204 of the compound containing mercury in also including for absorbing monitored gas with for exporting to Jing absorption plants 204
Elemental Mercury carry out be enriched with parsing second enrichment resolver 205, absorption plant 204 and second enrichment resolver 205
Between be provided with for control absorption plant 204 output gas enter second enrichment resolver 205 the 4th switch 206,
Absorption plant 204 is connected by heat traced pipeline 5 with harvester 1 simultaneously with reforming unit 201.
Wherein, because absorption plant 204 is connected with reforming unit 201 with harvester 1 simultaneously, the collection of harvester 1
Monitored gas can be entered in absorption plant 204 and reforming unit 201 simultaneously, wherein, into being supervised in reforming unit 201
The compound containing mercury surveyed in gas is converted to Elemental Mercury with original Elemental Mercury in monitored gas through the first enrichment parsing
The enrichment and parsing of device 202 is conveyed to the total content that detection means detection obtains mercury in waste gas；Into in absorption plant 204
Compound containing mercury in monitored gas is absorbed by absorption plant 204, only containing monitored in the gas of the output of absorption plant 204
Original Elemental Mercury in gas, is conveyed to detection means detection and obtains through enrichment and the parsing of the second enrichment resolver 205
The content of the Elemental Mercury in waste gas；The total content of mercury is divalence in waste gas with the difference of the content of Elemental Mercury in waste gas in waste gas
The content of mercury, therefore, can either detect mercury in waste gas through the detection of the Elemental Mercury to the process output of bivalent mercury removal device
Content can also detect the content of Elemental Mercury in waste gas, realize the variation of monitoring result.
Because the content of mercury in monitored gas may be different in the different periods, therefore, the embodiment of the present invention is employed
Reforming unit 201 is connected with harvester 1 simultaneously with absorption plant 204, can simultaneously realize the process to detected gas, is made
The total content for obtaining mercury in monitored gas can be corresponding with the content of Elemental Mercury in monitored gas, so that bivalent mercury contains
The monitoring result of amount is more accurate.
Reforming unit 201 in the embodiment of the present invention can be pyrolytic conversion device, it is also possible to which being equipped with can will be mercurous
Bivalent mercury in compound is reduced into the device of the reducing solution of Elemental Mercury.
Absorption plant 204 in the embodiment of the present invention is preferably using the device of the Klorvess Liquid equipped with saturation, it is also possible to
It is equipped with that the device of mercuric other solution can be absorbed.
As shown in fig. 6, bivalent mercury removal device 2 is further included：
The gas for removing the output of reforming unit 201 is provided between the enrichment resolver 202 of reforming unit 201 and first
Moisture and sour gas is dried deacidification device 207 in body.Because the compound containing mercury in monitored gas is generally mercury chloride,
Also there are various sour gas in monitored gas, therefore, when the compound containing mercury in monitored gas is through reforming unit 201
After conversion, the compound containing mercury in monitored gas is converted to Elemental Mercury and chlorine, and chlorine can corrode prison with sour gas
Instrument is surveyed, the service life for making monitoring instrument shortens, using deacidification device 207 is dried the output of reforming unit 201 can be removed
Chlorine and sour gas in gas, improves the service life of monitoring instrument；Again due to having vapor, water in monitored gas
Steam can affect the enrichment of follow-up Elemental Mercury, so as to affect the accuracy of the monitoring result of mercury, adopt and be dried the energy of deacidification device 207
The vapor in the gas of the output of reforming unit 201 is enough removed, makes the monitoring result of mercury more accurate.
Preferably, deacidification device 207 is dried using the device equipped with soda lime, the gas of the output of reforming unit 201 is passed through
Sour gas, chlorine and vapor in the gas of the removing output of reforming unit 201 of the device equipped with soda lime.It is dried deacidification dress
Put 207 other devices that can also be aqueous vapor centrifugation.
In the embodiment of the present invention, it is provided between the enrichment resolver 205 of absorption plant 204 and second and is inhaled for removing
The drying device 208 of the moisture in the gas of the output of receiving apparatus 204.
Wherein, due to containing vapor in the gas of the output of absorption plant 204, vapor can affect the richness of follow-up Elemental Mercury
Collection, so as to affect the accuracy of the monitoring result of mercury, using drying device 208 gas of the output of absorption plant 204 can be removed
In vapor, make the monitoring result of mercury more accurate.
Preferably, using the device equipped with soda lime, the gas of the output of absorption plant 204 is through being equipped with for drying device 208
The device of soda lime removes the vapor in the gas of the output of absorption plant 204.Drying device 208 can also be that aqueous vapor is separated
Other devices of effect.
Bivalent mercury removal device in the embodiment of the present invention also include for for monitored gas enter reforming unit 201 or
The process power set of power are provided in person's absorption plant 204.
Wherein, power set include the first power set 20901 and the second power set 20902, the first power set
20901 connect for monitored gas into the offer power of reforming unit 201, the second power with the first enrichment resolver 202
Device 20902 is connected with the second enrichment resolver 205 and provides power for entering absorption plant 204 for monitored gas.
Bivalent mercury removal device 2 also includes the 3rd metering device 2010 and the 4th metering device in the embodiment of the present invention
2011, the 3rd metering device 2010 is used for the amount that metering first is enriched with the gas of the output of resolver 202, the 4th metering device
2011 are used for the amount that metering second is enriched with the gas of the output of resolver 205.
Offgas outlet is provided with the 3rd metering device 2010 and the 4th metering device 2011, for discharging through mercury
Gas after enrichment.
The setting of the 3rd metering device 2010 and the 4th metering device 2011 can make monitored gas in power set
Reforming unit 201 or absorption plant 204 are entered with constant speed under effect, and the total of monitored gas can be measured
Amount, for calculating monitored gas in various valence states mercury content.
Preferably, power set adopt pump.
Please be as shown in fig. 7, the first enrichment enrichment resolver 205 of resolver 202 and second in the embodiment of the present invention
Include body 2012, be arranged in body 2012 for being enriched with the enrichment means 2013 of Elemental Mercury, being arranged in body 2012
For heating the heater block 2014 and the thermal component 2015 for being radiated to enrichment means 2013 of enrichment means 2013.
Enrichment means 2013 in the embodiment of the present invention preferably adopt spun gold, naturally it is also possible to be mercury can be enriched in into it
On other materials enrichment means.
Thermal component 2015 preferably adopts radiator fan.
In the embodiment of the present invention, it is dried deacidification device 207 and connects so that reforming unit with the second enrichment resolver 205
The gas of 201 outputs can be entered in the second enrichment resolver 205.
Specifically, it is dried deacidification device 207 to connect by the first connecting tube 2016 with the first enrichment resolver 202, does
Dry device 208 is connected with the second enrichment resolver 205 by the second connecting tube 2017, and the first connecting tube 2016 is connected with second
Pipe 2017 is connected by the 3rd connecting tube 2018.
It is more specific, one end of the 3rd connecting tube 2018 and the first connecting tube 2016 in be dried deacidification device 207 with
Part connection between 3rd switch 203, the other end of the 3rd connecting tube 2018 and the second connecting tube 2017 are in drying device
208 and the 4th the part between switch 206 connect, the 3rd connecting tube 2018 and the connectivity part of the second connecting tube 2017 are provided with the
Five switches 2019.
The 6th switch 2020 is provided between the first enrichment power set 20901 of resolver 202 and first, second
The 7th switch 2021 is provided between the enrichment power set 20902 of resolver 205 and second.
3rd switch 203 is switched with the 4th and 206 connected by connecting tube, and is provided with carrier gas in the connecting tube and is entered
Mouthful.
6th switch 2020 is switched with the 7th and 2021 connected by connecting tube, and is provided with mercury gas in the connecting tube and is gone out
Mouthful, mercury gas outlet is connected with detection means.Mercury gas herein refer to carrier gas and gas Elemental Mercury.
Wherein, the switch 2020 of the 203, the 4th switch of the 3rd switch the 206, the 6th and the 7th switch 2021 preferably adopt threeway
Magnetic valve.5th switch 2019 is preferably using switching ball valve.
When needing to detect the simple substance mercury content in monitored gas, total mercury content and drawing divalence mercury content,
The enrichment of mercury is carried out first, and the first power set 20901 and the second power set 20902 are with the extraction of identical flow velocity
Monitored gas, monitored gas enters reforming unit 201 and absorption plant 204 simultaneously, into the monitored of reforming unit 201
The bivalent mercury in compound containing mercury in gas is converted into Elemental Mercury, and with original Elemental Mercury in monitored gas total mercury is formed,
Deacidify, dechlorinate through being dried deacidification device 207, after eliminating water, in being delivered directly to the first enrichment resolver 202, being enriched with；
Absorbed into the bivalent mercury in the compound containing mercury in the monitored gas of absorption plant 204, only remaining Elemental Mercury, Jing Guogan
Dry device 208 is entered after being dried and is enriched with the second enrichment resolver 205.When the first enrichment resolver 202 and second
After the enrichment enrichment Preset Time of resolver 205, the first power set 20901 and the second power set 20902, enrichment knot are closed
Beam.
Then the mercury in the first enrichment resolver 202 is parsed, opens the 3rd switch 203 and the 6th switch
2020, enrichment means 2013 are heated by heater block 2014, more than 500 DEG C are heated to, it is enriched in enrichment means 2013
Elemental Mercury decompose, produce mercuryvapour, then pass to the carrier gas of constant flow rate, bringing mercuryvapour into detection means 3 is carried out
Detection.After the completion of to be detected, the 3rd switch 203 and the 6th switch 2020 are closed, open the 4th switch 206 and the 7th switch 2021
Elemental Mercury in second enrichment resolver 205 is parsed and detected.
When only needing to detect the content of total mercury, the switch of operation the 5th 2019 makes the enrichment parsing of drying device 208 and second
Device 205 can not be connected, and monitored gas only by reforming unit 201, needs the regular hour to complete due to the enrichment of mercury,
Therefore, in order to improve the bioaccumulation efficiency of mercury, bivalent mercury removal device 2 provided in an embodiment of the present invention is in monitored gas is surveyed
During total mercury content, the 3rd switch 203 and the 6th switch 2020 are first shut off, open the 4th switch 206 and the 7th switch 2021, made
Elemental Mercury is enriched with the second enrichment resolver 205；When the mercury in the second enrichment resolver 205 is enriched with, the 3rd is opened
The switch 2020 of switch 203 and the 4th, closes the 4th switch 206 and the 7th switch 2021, makes Elemental Mercury in the first enrichment parsing dress
Put and be enriched with 205, such alternately enrichment, parsing, detection make the in hgher efficiency of total mercury monitoring, increased the flexible of monitoring system
Property.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (8)
1. a kind of monitoring system, for monitoring monitored gas in mercury content, including for gathering the collection of monitored gas
Device (1), Elemental Mercury is converted into for the compound containing mercury in the monitored gas that gathers the harvester (1), and it is defeated
Go out the bivalent mercury removal device (2) of the gas containing Elemental Mercury and for detecting containing for bivalent mercury removal device (2) output
The detection means (3) of the amount of Elemental Mercury in the gas of Elemental Mercury, it is characterised in that the monitoring system is also included for producing two
Valency mercury Standard Gases, and the bivalent mercury Standard Gases are passed through into the calibrating installation (4) of the harvester (1), the calibrating installation
(4) it is additionally operable to produce Elemental Mercury Standard Gases, and the Elemental Mercury Standard Gases of generation is passed through into the harvester (1) and the detection
Device (3)；
The calibrating installation (4) provides dress including carrier gas offer device (401), compound containing mercury offer device (402), reactant
(403), reative cell (404), vaporization chamber (405), mixing chamber (406), first switch (407) and second switch (408) are put, it is described
Carrier gas offer device (401) is connected with the reative cell (404), the carrier gas offer device (401) and the vaporization chamber (405)
Connection, the compound containing mercury offer device (402) connects with the reative cell (404), the compound containing mercury offer device
(402) connect with the vaporization chamber (405), the reactant offer device (403) connects with the reative cell (404), described
Reative cell (404) is connected with the mixing chamber (406), and the vaporization chamber (405) connects with the mixing chamber (406), described mixed
Conjunction room (406) is connected with the detection means (3) and the mixing chamber (406) is connected with the harvester (1), and described first
Carrier gas during (407) are switched for controlling the carrier gas offer device (401) flows into the vaporization chamber (405) or the reaction
Room (404), the second switch (408) for controlling the compound containing mercury offer device (402) in compound containing mercury stream
Enter the vaporization chamber (405) or the reative cell (404).
2. monitoring system according to claim 1, it is characterised in that in the carrier gas offer device (401) and described
The first metering device (410) is provided between one switch (407), first metering device (410) is for measuring the carrier gas
The amount of the carrier gas that offer device (401) flows out.
3. monitoring system according to claim 2, it is characterised in that in the carrier gas offer device (401) and described
It is provided between one metering device (410) and is dried mercury removal device (411), described to be dried mercury removal device (411) described for removing
Moisture and mercury in the carrier gas that carrier gas offer device (401) flows out.
4. monitoring system according to claim 1, it is characterised in that the compound containing mercury offer device (402) with
It is provided between the second switch (408) for measuring the mercurous chemical combination that the compound containing mercury offer device (402) is flowed out
Second metering device (413) of the amount of thing reagent.
5. monitoring system according to claim 1, it is characterised in that the bivalent mercury removal device (2) is additionally operable to absorb
Compound containing mercury in the monitored gas.
6. monitoring system according to claim 5, it is characterised in that the bivalent mercury removal device (2) is included for will
Compound containing mercury in monitored gas be converted into the reforming unit (201) of Elemental Mercury with for defeated to inverted device (201)
The Elemental Mercury for going out carries out being enriched with the first enrichment resolver (202) of parsing, rich with described first in the reforming unit (201)
It is provided between collection resolver (202) rich into described first for controlling the gas of reforming unit described in Jing (201) output
3rd switch (203) of collection resolver (202), the suction of the compound containing mercury in also including for absorbing the monitored gas
Receiving apparatus (204) are enriched with parsing with for carrying out being enriched with the second of parsing to the Elemental Mercury of absorption plant described in Jing (204) output
Device (205), is provided with for controlling Jing between the absorption plant (204) and the described second enrichment resolver (205)
The gas of absorption plant (204) output enters the 4th switch (206) of the described second enrichment resolver (205), described
Absorption plant (204) is with the reforming unit (201) while being connected with the harvester (1) by heat traced pipeline (5).
7. monitoring system according to claim 6, it is characterised in that
It is provided with for removing the conversion between the reforming unit (201) and the described first enrichment resolver (202)
Moisture and sour gas is dried deacidification device (207) in the gas of device (201) output；
It is provided with for removing the absorption between the absorption plant (204) and the described second enrichment resolver (205)
The drying device (208) of the moisture in the gas of device (204) output.
8. monitoring system according to claim 6, it is characterised in that the bivalent mercury removal device (2) also includes the 3rd
Metering device (2010) and the 4th metering device (2011), the 3rd metering device (2010) is enriched with for measuring described first
The amount of the gas of resolver (202) output, the 4th metering device (2011) fills for measuring the second enrichment parsing
Put the amount of the gas of (205) output.
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| CN201410853961.7A CN104535725B (en) | 2014-12-31 | 2014-12-31 | Monitoring system |
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| CN105699146A (en) * | 2016-03-15 | 2016-06-22 | 中国华电集团科学技术研究总院有限公司 | Device for producing mercury and bivalent mercury standard gas based on penetration principle |
| CN109342133A (en) * | 2018-11-16 | 2019-02-15 | 北京雪迪龙科技股份有限公司 | A kind of mercury on-line monitoring system |
| CN111487370A (en) * | 2020-04-16 | 2020-08-04 | 南京理工大学 | Device and method for converting oxidized mercury and measuring total mercury content of flue gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5750992A (en) * | 1996-09-18 | 1998-05-12 | Tennessee Valley Authority | Method to compensate for interferences to mercury measurement in gases |
| US20060243096A1 (en) * | 2005-05-02 | 2006-11-02 | Dieter Kita | Method and apparatus for converting oxidized mercury into elemental mercury |
| CN101051027A (en) * | 2007-03-28 | 2007-10-10 | 东北电力大学 | Method for water phase detecting micro mercury in water or waste water by spectrophotometry |
| CA2755565C (en) * | 2009-03-11 | 2016-10-11 | Resonance Ltd. | Apparatus for continuous in situ monitoring of elemental mercury vapour, and method of using same |
| CN102221489B (en) * | 2010-04-15 | 2013-02-13 | 中国科学院城市环境研究所 | Method and device for combined collection of trace level mercury species in atmosphere |
| CN101980013B (en) * | 2010-10-14 | 2013-07-24 | 厦门大学 | System for detecting activity of adsorbent |
| CN102564986B (en) * | 2011-12-30 | 2014-08-27 | 北京雪迪龙科技股份有限公司 | Smoke mercury emission monitoring system and method |
| CN102590153A (en) * | 2012-01-16 | 2012-07-18 | 青岛佳明测控仪器有限公司 | Device and method for quantitatively analyzing total mercury of atmosphere/smoke based on low-temperature plasma |
| CN102998268A (en) * | 2012-11-22 | 2013-03-27 | 中科天融(北京)科技有限公司 | Smoke mercury online monitoring instrument |
| CN103293326B (en) * | 2013-03-22 | 2014-02-05 | 杭州超距科技有限公司 | Mercury-containing fumes emission continuous monitoring system and monitoring method thereof |
| CN203164193U (en) * | 2013-03-22 | 2013-08-28 | 杭州超距科技有限公司 | Continuous monitoring system for emission of flue gas form mercury |
| CN204330725U (en) * | 2014-12-31 | 2015-05-13 | 力合科技（湖南）股份有限公司 | A kind of monitoring system |
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