CN204422487U - A kind of monitoring system - Google Patents
A kind of monitoring system Download PDFInfo
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- CN204422487U CN204422487U CN201420868478.1U CN201420868478U CN204422487U CN 204422487 U CN204422487 U CN 204422487U CN 201420868478 U CN201420868478 U CN 201420868478U CN 204422487 U CN204422487 U CN 204422487U
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Abstract
This application provides a kind of monitoring system, for monitoring the content of mercury in monitored gas, comprise the harvester for gathering monitored gas from monitored environment, be converted into Elemental Mercury for the compound containing mercury in the monitored gas that gathered by described harvester and export containing elemental mercury gas bivalent mercury removal device and be used for the pick-up unit of the amount detecting the Elemental Mercury that described bivalent mercury removal device exports, it is characterized in that, monitoring system also comprises for generation of Elemental Mercury Standard Gases and described Elemental Mercury Standard Gases is passed into the calibrating installation of described pick-up unit.The monitoring system that the utility model provides can realize the real time calibration to pick-up unit in monitoring system, thus makes monitoring result accurate.
Description
Technical field
The application relates to gas monitoring techniques field, particularly relates to a kind of monitoring system, for monitoring the content of mercury in monitored gas.
Background technology
Heavy metal pollution refers to the environmental pollution caused by heavy metal or its compound, caused by waste gas discharge of wastewater, heavy metal pollution directly can be detrimental to health and cause the deterioration of environmental quality, therefore, need to monitor the content of heavy metal before waste gas discharge of wastewater, and in real time it is monitored whether meet emission standard.
In the waste gas of discharge, heavy metal mainly exists with the form of elemental form or compound, common monitoring method can only be analyzed the heavy metal of elemental form, therefore, content of beary metal in monitoring waste gas, needs the heavy metal of compound form in waste gas to change into the heavy metal of elemental form.
To the monitoring of heavy metal Hg in waste gas, monitoring result is obtained mainly through artificial sample, process and detection, staff gathers waste gas sample in monitored environment, be monitored gas, then make the bivalent mercury in monitored gas be converted into Elemental Mercury through process, eventually pass the content thus the content drawing mercury in monitored gas that detect Elemental Mercury in monitored gas, test accurately, but the result drawn by personal monitoring has certain hysteresis quality.
In order to the content of monitored environment mercury from monitored gas can be gone out by Real-Time Monitoring, there is a kind of monitoring system afterwards, this detection system comprises harvester, bivalent mercury removal device and pick-up unit, wherein harvester gathers the monitored gas in monitored environment, bivalent mercury in the monitored gas of harvester collection is converted into Elemental Mercury by bivalent mercury removal device, and last pick-up unit detects the content of the mercury in the monitored gas after the process of bivalent mercury removal device again thus draws monitoring result.But, because pick-up unit can cause monitoring system monitoring result inaccurate at the long-time content detecting Elemental Mercury.
Utility model content
The utility model provides a kind of monitoring system, and this monitoring system is for solving the inaccurate problem of monitoring system monitoring result.
The technical scheme that the utility model provides is as follows:
A kind of monitoring system, for monitoring the content of mercury in monitored gas, comprise the harvester for gathering monitored gas from monitored environment, be converted into Elemental Mercury for the compound containing mercury in the monitored gas that gathered by described harvester and export containing elemental mercury gas bivalent mercury removal device and be used for the pick-up unit of the amount detecting the Elemental Mercury that described bivalent mercury removal device exports, wherein, monitoring system also comprises for generation of Elemental Mercury Standard Gases and described Elemental Mercury Standard Gases is passed into the calibrating installation of described pick-up unit.
Preferably, described calibrating installation comprises carrier gas generator, compound containing mercury generator, reactant generator, reaction chamber, mixing chamber, first switch and second switch, described carrier gas generator is communicated with described reaction chamber, described compound containing mercury generator is communicated with described reaction chamber, described reactant generator is communicated with described reaction chamber, described reaction chamber is communicated with described mixing chamber, described mixing chamber is communicated with described pick-up unit, described first switch flows into described reaction chamber for the carrier gas controlled in described carrier gas generator, described second switch flows into described reaction chamber for the compound containing mercury controlled in described compound containing mercury generator.
Preferably, described calibrating installation also comprises carrier gas generator described in vaporization chamber and is communicated with described vaporization chamber, described compound containing mercury generator is communicated with described vaporization chamber, described vaporization chamber is communicated with described mixing chamber, described mixing chamber is communicated with described pick-up unit and described mixing chamber is communicated with described harvester, described first switch also flows into described vaporization chamber for the carrier gas controlled in described carrier gas generator, and described second switch also flows into described vaporization chamber for the compound containing mercury controlled in described compound containing mercury generator.
Preferably, between described carrier gas generator and described first switch, be provided with the first measuring apparatus, described first measuring apparatus is for measuring the amount of the carrier gas of described carrier gas generator outflow.
Preferably, between described carrier gas generator and described first measuring apparatus, be provided with dry mercury removal device, described dry mercury removal device for remove described carrier gas generator flow out carrier gas in moisture and mercury.
Preferably, between described compound containing mercury generator and described second switch, be provided with the second measuring apparatus of the amount for measuring the compound containing mercury reagent that described compound containing mercury generator flows out.
Preferably, described bivalent mercury removal device is also for absorbing the compound containing mercury in described monitored gas.
Preferably, described bivalent mercury removal device comprises the reforming unit for the compound containing mercury in monitored gas being converted into Elemental Mercury and is used for carrying out the Elemental Mercury exported through reforming unit the first enrichment resolver of enrichment parsing, between described reforming unit and described first enrichment resolver, the gas be provided with for controlling to export through described reforming unit enters the 3rd switch of described first enrichment resolver, also comprise absorption plant for absorbing the compound containing mercury in described monitored gas with for carrying out the second enrichment resolver of enrichment parsing to the Elemental Mercury exported through described absorption plant, between described absorption plant and described second enrichment resolver, the gas be provided with for controlling to export through described absorption plant enters the 4th switch of described second enrichment resolver, described absorption plant is communicated with described harvester by heat tracing pipe with described reforming unit simultaneously.
Preferably,
The dry deacidification device for removing moisture and sour gas in gas that described reforming unit exports is provided with between described reforming unit and described first enrichment resolver;
The drying device for removing the moisture in gas that described absorption plant exports is provided with between described absorption plant and described second enrichment resolver.
Preferably, described bivalent mercury removal device also comprises the 3rd measuring apparatus and the 4th measuring apparatus, described 3rd measuring apparatus is for measuring the amount of the gas of described first enrichment resolver output, and described 4th measuring apparatus is for measuring the amount of the gas of described second enrichment resolver output.
Monitoring system provided by the utility model, compared with prior art, the monitoring system provided due to the utility model comprises calibrating installation, this calibrating installation can produce Elemental Mercury Standard Gases, and Elemental Mercury Standard Gases is passed into pick-up unit, the content of Elemental Mercury in the content of the Elemental Mercury of pick-up unit detection and Elemental Mercury Standard Gases is contrasted, realizes the calibration to pick-up unit, thus make monitoring result more accurate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The monitoring system structural representation that Fig. 1 provides for the utility model embodiment one;
The monitoring system structural representation that Fig. 2 provides for the utility model embodiment two;
Fig. 3 is a kind of structural representation of calibrating installation in the utility model embodiment two;
Fig. 4 is the another kind of structural representation of the calibrating installation in the utility model embodiment two;
Fig. 5 is the another kind of structural representation of the calibrating installation in the utility model embodiment two;
Fig. 6 is the bivalent mercury removal device structural representation in the utility model embodiment three;
Fig. 7 is the another kind of structural representation of the bivalent mercury removal device in the utility model embodiment three;
Fig. 8 is the first enrichment resolver in the utility model embodiment three and the second enrichment resolver structural representation.
Embodiment
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
Embodiment one
Please as shown in Figure 1, the utility model embodiment provides a kind of monitoring system, this monitoring system is for monitoring the content of mercury in monitored gas, comprise the harvester 1 for gathering monitored gas from monitored environment, be converted into Elemental Mercury for the compound containing mercury in monitored gas that harvester 1 is gathered and export the bivalent mercury removal device 2 of elemental mercury gas, and for detecting the pick-up unit 3 of amount of the Elemental Mercury that bivalent mercury removal device 2 exports, wherein, this monitoring system also comprises for generation of Elemental Mercury Standard Gases and Elemental Mercury Standard Gases is passed into the calibrating installation 4 of pick-up unit 3.
The monitoring system that the utility model embodiment provides, owing to comprising calibrating installation 4, this calibrating installation 4 can produce Elemental Mercury Standard Gases, and the Elemental Mercury Standard Gases of generation is passed in pick-up unit 3, in the content of the Elemental Mercury detected by pick-up unit 3 and Elemental Mercury Standard Gases, the content of Elemental Mercury contrasts, realize the calibration to pick-up unit 3, thus make monitoring result more accurate.
Embodiment two
Please as shown in Figure 2, the monitoring system that the utility model embodiment provides is from the different of embodiment one,
Described calibrating installation 4 is also for passing into harvester 1 by the bivalent mercury Standard Gases of generation when harvester 1 does not work.
Wherein, calibrating installation 4 as shown in Figure 3, comprise carrier gas generator 401, compound containing mercury generator 402, reactant generator 403, reaction chamber 404, mixing chamber 406, first switch 407 and second switch 408, carrier gas generator 401 is communicated with reaction chamber 404, compound containing mercury generator 402 is communicated with reaction chamber 404, reactant generator 403 is communicated with reaction chamber 404, reaction chamber 404 is communicated with mixing chamber 406, mixing chamber 406 is communicated with pick-up unit 3, first switch 407 flows into reaction chamber 404 for the carrier gas controlled in carrier gas generator 401, second switch 408 flows into reaction chamber 404 for the compound containing mercury controlled in compound containing mercury generator 402.
The structure of calibrating installation 4 can also be as shown in Figure 4, calibrating installation 4 comprises carrier gas generator 401, compound containing mercury generator 402, reactant generator 403, reaction chamber 404, vaporization chamber 405, mixing chamber 406, first switch 407 and second switch 408, carrier gas generator 401 is communicated with reaction chamber 404, carrier gas generator 401 is communicated with vaporization chamber 405, compound containing mercury generator 402 is communicated with reaction chamber 404, compound containing mercury generator 402 is communicated with vaporization chamber 405, reactant generator 403 is communicated with reaction chamber 404, reaction chamber 404 is communicated with mixing chamber 406, vaporization chamber 405 is communicated with mixing chamber 406, mixing chamber 406 is communicated with pick-up unit 3 and mixing chamber 406 is communicated with harvester 1, , first switch 407 flows in vaporization chamber 405 or reaction chamber 404 for the carrier gas controlled in carrier gas generator 401, second switch 408 flows into vaporization chamber 405 or reaction chamber 404 for the compound containing mercury controlled in compound containing mercury generator 402.
Wherein, compound containing mercury reagent in compound containing mercury generator 402 reacts with the reactant in reactant generator 403 and generates Elemental Mercury under the effect of second switch 408 in reaction chamber 404, carrier gas in carrier gas generator 401 enters reaction chamber 404 at the flows by action of the first switch 407, the Elemental Mercury that reaction chamber generates is brought in mixing chamber 406 by the carrier gas of carrier gas generator 401, Elemental Mercury Standard Gases is formed after mixing with carrier gas in mixing chamber 406, Elemental Mercury Standard Gases flows in harvester 1 and calibrates the monitoring instrument in monitoring system from mixing chamber 406, or Elemental Mercury Standard Gases flows into pick-up unit 3 from mixing chamber 406, pick-up unit 3 is calibrated separately, compound containing mercury reagent in compound containing mercury generator 402 to enter in vaporization chamber 405 and is evaporated in vaporization chamber 405 under the effect of second switch 408, carrier gas in carrier gas generator 401 enters vaporization chamber 405 under the effect of the first switch 407, compound containing mercury reagent after evaporation is brought into mixing chamber 406 and be mixed to form bivalent mercury Standard Gases in mixing chamber 406 by carrier gas, bivalent mercury Standard Gases passes into harvester 1 from mixing chamber 406, calibrates the monitoring instrument in monitoring system.
Carrier gas source of the gas 401 in the utility model embodiment preferably adopts the air of nitrogen or high pressure compressed.
Compound containing mercury in compound containing mercury generator 402 is bivalent mercury solution, and because divalent mercuric compounds in waste gas is mercuric chloride, therefore, bivalent mercury solution is preferably mercuric chloride solution.
The reactant that reactant generator 403 provides is the reductive agent that can displace Elemental Mercury from bivalent mercury solution.
Reaction chamber 404 preferably adopts airtight reaction vessel, is more preferably confined reaction pond.
Please as shown in Figure 5, the calibrating installation 4 in the utility model embodiment can also comprise further,
The amount of carrier gas of the first measuring apparatus 410, first measuring apparatus 410 for measuring carrier gas generator 401 and flowing out is provided with between carrier gas generator 401 and the first switch 407.
According to the metering of the first measuring apparatus 410, the amount of the carrier gas regulating carrier gas generator 401 to flow out by regulating the first switch 407, can control carrier gas and Elemental Mercury or carrier gas and mercuric blending ratio, thus obtain the mercury Standard Gases of different mixing proportion.
In the utility model embodiment, between carrier gas generator 401 and the first measuring apparatus 410, be provided with dry mercury removal device 411, dry mercury removal device 411 for remove carrier gas generator 401 flow out carrier gas in moisture and mercury.
If containing mercury or mercury compound or moisture in the carrier gas of flowing out in carrier gas generator 401, then in the process of mercury Standard Gases generation, can impact the content of mercury in mercury Standard Gases or mercuric content, thus the demarcation of monitoring instrument is impacted, finally affect the accuracy of mercury monitoring result in waste gas.The carrier gas that the setting of dry mercury removal device 411 makes carrier gas generator 401 flow out is through super-dry mercury removal device 411, eliminate the moisture in carrier gas and mercury, the moisture avoided in carrier gas mix as in mercury Standard Gases on the impact that the demarcation of monitoring instrument causes, make the monitoring result of mercury in waste gas more accurate.
In this example, be provided with reactant propulsion system 412 between reactant generator 403 and reaction chamber 404, reactant propulsion system 412 are for being delivered to the reactant in reactant generator 403 in reaction chamber 404.
Wherein, reactant propulsion system 412 preferably adopt and get liquid pump.
In the utility model embodiment, between compound containing mercury generator 402 and second switch 408, be provided with the second measuring apparatus 413 of the amount for measuring the compound containing mercury reagent that compound containing mercury generator 402 flows out.
According to the metering of the compound containing mercury reagent that the second measuring apparatus 413 pairs of compound containing mercury generators 402 flow out, the amount of the compound containing mercury reagent that compound containing mercury generator 402 flows out is controlled by second switch 408, accurately can control the amount that in reaction chamber 404, Elemental Mercury generates, thus the amount of Elemental Mercury in Elemental Mercury Standard Gases is effectively controlled; Also accurately can control the amount of bivalent mercury evaporation in vaporization chamber 405, thus the mercuric amount in bivalent mercury Standard Gases is effectively controlled.
In the utility model embodiment, second switch 408 preferably adopts three-way switch valve.
First switch can be three-way switch valve, also can be by the carrier gas guiding vaporization chamber 405 in carrier gas generator and the first operation valve that the conduit be communicated with vaporization chamber 405 is installed, interior and the second operation valve that the conduit be communicated with reaction chamber 404 is installed by the carrier gas directed response room 404 in carrier gas generator.
When the utility model embodiment alignment device 4 produces Elemental Mercury Standard Gases, the three-way switch valve of second switch 408 is closed to one end of vaporization chamber 405, one end to reaction chamber 404 is opened, the mercuric chloride standard solution of the preset concentration prepared is injected reaction chamber 404 according to constant flow by the metering of the second measuring apparatus 413 under the effect of three-way switch valve, namely get liquid pump by reactant propulsion system 412 in advance in reaction chamber 404 and pump into excessive reducing solution, pump into reducing solution in reaction chamber 404 and mercuric chloride solution in advance to react generation Elemental Mercury, simultaneously, by the metering of the first measuring apparatus 410, carrier gas in the effect download gas generator 401 of the second operation valve and nitrogen enter in reaction chamber 404 according to constant flow, by Elemental Mercury with gas form take out of, then in mixing chamber 406, Elemental Mercury Standard Gases is mixed to form, finally flow into from mixing chamber 406 calibration that pick-up unit 3 or harvester 1 realize monitoring instrument.
When the utility model embodiment alignment device 4 produces bivalent mercury Standard Gases, the three-way switch valve of second switch 408 is in open mode to one end of vaporization chamber 405, one end to reaction chamber 404 is in closed condition, the mercuric chloride standard solution of the preset concentration prepared is injected vaporization chamber 405 according to constant flow by the metering of the second measuring apparatus 413 under the effect of three-way switch valve, because temperature in vaporization chamber 405 is more than 200 DEG C, therefore the mercuric chloride standard solution entered in vaporization chamber 405 can evaporate, simultaneously, by the metering of the first measuring apparatus 410, carrier gas in the effect download gas generator 401 of the first operation valve and nitrogen enter in vaporization chamber 405 according to constant flow, by bivalent mercury with gas form take out of, then in mixing chamber 406, bivalent mercury Standard Gases is mixed to form, finally flow into harvester 1 from mixing chamber 406, realize the calibration to monitoring instrument.
It should be noted that, the calibrating installation provided in the utility model embodiment can produce mercury Standard Gases and Elemental Mercury Standard Gases or bivalent mercury Standard Gases, can expect, according to actual monitoring demand, compound containing mercury reagent source also can be the compound agent source containing other heavy metals needing monitoring, reactant source can be the reducing solution that can will replace containing the heavy metal needed in the compound agent of other heavy metals of monitoring, thus produce corresponding the simple substance Standard Gases of heavy metal or the Standard Gases of multiple valence state that need monitoring according to the device that the utility model embodiment provides.
Embodiment three
The monitoring system that the utility model embodiment provides is compared with embodiment one or embodiment two, and its difference is,
Bivalent mercury removal device 2 in the utility model embodiment is also for absorbing the compound containing mercury in monitored gas.
Please as shown in Figure 6, bivalent mercury removal device 2 in the utility model embodiment, comprise the reforming unit 201 for the compound containing mercury in monitored gas being converted into Elemental Mercury and the first enrichment resolver 202 being used for carrying out the Elemental Mercury exported through reforming unit 201 enrichment parsing, between reforming unit 201 and the first enrichment resolver 202, the gas be provided with for controlling to export through reforming unit 201 enters the 3rd switch 203 of the first enrichment resolver 202, bivalent mercury removal device 2 also comprise absorption plant 204 for absorbing the compound containing mercury in monitored gas with for carrying out the second enrichment resolver 205 of enrichment parsing to the Elemental Mercury exported through absorption plant 204, the 4th switch 206 that the gas exported for controlling absorption plant 204 enters the second enrichment resolver 205 is provided with between absorption plant 204 and the second enrichment resolver 205, absorption plant 204 is communicated with harvester 1 by heat tracing pipe 5 with reforming unit 201 simultaneously.
Wherein, because absorption plant 204 is communicated with harvester 1 with reforming unit 201 simultaneously, the monitored gas that harvester 1 gathers can enter absorption plant 204 with reforming unit 201 simultaneously, wherein, the compound containing mercury entered in the monitored gas in reforming unit 201 is converted to original Elemental Mercury in Elemental Mercury and monitored gas through the enrichment of the first enrichment resolver 202 and resolves and flow to pick-up unit and detect the total content obtaining mercury in waste gas; The compound containing mercury entered in the monitored gas in absorption plant 204 is absorbed by absorption plant 204, only containing original Elemental Mercury in monitored gas in the gas that absorption plant 204 exports, the enrichment through the second enrichment resolver 205 flows to parsing the content that pick-up unit detects the Elemental Mercury obtained in waste gas; In waste gas, in the total content of mercury and waste gas, the difference of the content of Elemental Mercury is mercuric content in waste gas, therefore, detection through the Elemental Mercury exported the process of bivalent mercury removal device can either detect that the content of mercury in waste gas can also detect the content of Elemental Mercury in waste gas, achieves the variation of monitoring result.
Because the content of mercury in monitored gas may be different in the different periods, therefore, the utility model embodiment have employed reforming unit 201 and is communicated with harvester 1 with absorption plant 204 simultaneously, the process to detected gas can be realized simultaneously, make the total content of mercury in monitored gas can be corresponding with the content of Elemental Mercury in monitored gas, thus make the monitoring result of bivalent mercury content more accurate.
Reforming unit 201 in the utility model embodiment can be pyrolytic conversion device, also can be the device that the bivalent mercury in compound containing mercury can be reduced into the reducing solution of Elemental Mercury is housed.
Absorption plant 204 in the utility model embodiment preferably adopts the device that saturated Klorvess Liquid is housed, and also can be that the device that can absorb other solution mercuric is housed.
Please as shown in Figure 7, bivalent mercury removal device 2 comprises further:
The dry deacidification device 207 for removing moisture and sour gas in gas that reforming unit 201 exports is provided with between reforming unit 201 and the first enrichment resolver 202.Because the compound containing mercury in monitored gas is generally mercuric chloride, multiple sour gas is also there is in monitored gas, therefore, when the compound containing mercury in monitored gas is after reforming unit 201 transforms, compound containing mercury in monitored gas is converted to Elemental Mercury and chlorine, chlorine and sour gas all can corrosion monitoring instruments, the serviceable life of monitoring instrument is shortened, chlorine in adopt dry deacidification device 207 to remove gas that reforming unit 201 exports and sour gas, improve serviceable life of monitoring instrument; Again owing to having water vapor in monitored gas, water vapor can affect the enrichment of follow-up Elemental Mercury, thus affect the accuracy of the monitoring result of mercury, adopt dry deacidification device 207 can remove reforming unit 201 export gas in water vapor, make the monitoring result of mercury more accurate.
Preferably, dry deacidification device 207 adopts the device that soda-lime is housed, sour gas, chlorine and the water vapor of the gas that reforming unit 201 exports in the gas that device removing reforming unit 201 output of soda-lime is housed.Dry deacidification device 207 also can be other devices of aqueous vapor centrifugation.
In the utility model embodiment, between absorption plant 204 and the second enrichment resolver 205, be provided with the drying device 208 for removing the moisture in gas that absorption plant 204 exports.
Wherein, owing to containing water vapor in the gas that absorption plant 204 exports, water vapor can affect the enrichment of follow-up Elemental Mercury, thus affect the accuracy of the monitoring result of mercury, employing drying device 208 can remove the water vapor in the gas of absorption plant 204 output, makes the monitoring result of mercury more accurate.
Preferably, drying device 208 adopts the device that soda-lime is housed, the water vapor of the gas that absorption plant 204 exports in the gas that device removing absorption plant 204 output of soda-lime is housed.Drying device 208 also can be other devices of aqueous vapor centrifugation.
Bivalent mercury removal device in the utility model embodiment also comprises for entering the process propulsion system providing power in reforming unit 201 or absorption plant 204 for monitored gas.
Wherein, propulsion system comprise the first propulsion system 20901 and the second propulsion system 20902, first propulsion system 20901 are communicated with the first enrichment resolver 202 and are used for monitored gas and enter reforming unit 201 and provide power, and the second propulsion system 20902 are communicated with the second enrichment resolver 205 for providing power for monitored gas enters absorption plant 204.
In the utility model embodiment, bivalent mercury removal device 2 also comprises the 3rd measuring apparatus 2010 and the 4th measuring apparatus 2011,3rd measuring apparatus 2010 is for measuring the amount of the gas of the first enrichment resolver 202 output, and the 4th measuring apparatus 2011 is for measuring the amount of the gas of the second enrichment resolver 205 output.
3rd measuring apparatus 2010 and the 4th measuring apparatus 2011 are provided with offgas outlet, for discharging the gas after mercury enrichment.
The setting of the 3rd measuring apparatus 2010 and the 4th measuring apparatus 2011 can make monitored gas enter reforming unit 201 or absorption plant 204 with constant speed under the effect of propulsion system, and the total amount of monitored gas can be measured, for calculating the content of the mercury of various valence state in monitored gas.
Preferably, propulsion system adopt pump.
Please as shown in Figure 8, the first enrichment resolver 202 in the utility model embodiment and the second enrichment resolver 205 including body 2012, being arranged on the interior enrichment means 2013 for enrichment Elemental Mercury of body 2012, being arranged in body 2012 for heating the heater block 2014 of enrichment means 2013 and the thermal component 2015 for dispelling the heat to enrichment means 2013.
Enrichment means 2013 in the utility model embodiment preferably adopts spun gold, can certainly be can by the enrichment means of mercury enrichment other materials thereon.
Thermal component 2015 preferably adopts radiator fan.
In the utility model embodiment, the gas that dry deacidification device 207 is communicated with reforming unit 201 is exported with the second enrichment resolver 205 enters in the second enrichment resolver 205.
Concrete, dry deacidification device 207 is communicated with by the first connecting pipe 2016 with the first enrichment resolver 202, drying device 208 is communicated with by the second connecting pipe 2017 with the second enrichment resolver 205, and the first connecting pipe 2016 is communicated with by the 3rd connecting pipe 2018 with the second connecting pipe 2017.
More concrete, the part that one end and first connecting pipe 2016 of the 3rd connecting pipe 2018 are between dry deacidification device 207 with the 3rd switch 203 is communicated with, the part that the other end and second connecting pipe 2017 of the 3rd connecting pipe 2018 are between drying device 208 with the 4th switch 206 is communicated with, and the 3rd connecting pipe 2018 and the second connecting pipe 2017 connectivity part are provided with the 5th switch 2019.
Between the first enrichment resolver 202 and the first propulsion system 20901, be provided with the 6th switch 2020, between the second enrichment resolver 205 and the second propulsion system 20902, be provided with the 7th switch 2021.
3rd switch 203 is communicated with by connecting pipe with the 4th switch 206, and is provided with carrier gas inlet on this connecting pipe.
6th switch 2020 is communicated with by connecting pipe with the 7th switch 2021, and on this connecting pipe, be provided with mercury gas outlet, and mercury gas outlet is communicated with pick-up unit.Mercury gas herein refers to carrier gas and gas Elemental Mercury.
Wherein, the 3rd switch 203, the 4th switch 206, the 6th switch 2020 and the 7th switch 2021 all preferably adopt three-way solenoid valve.5th switch 2019 preferably adopts and switches ball valve.
When the Elemental Mercury content, the total mercury content that need to detect in monitored gas and when drawing bivalent mercury content,
First the enrichment of mercury is carried out, first propulsion system 20901 extract monitored gas with the second propulsion system 20902 with identical flow velocity, monitored gas enters reforming unit 201 and absorption plant 204 simultaneously, the bivalent mercury entered in the compound containing mercury in the monitored gas of reforming unit 201 is converted into Elemental Mercury, total mercury is formed with Elemental Mercury original in monitored gas, after deacidifying through super-dry deacidification device 207, dechlorinate, dewatering, be delivered directly in the first enrichment resolver 202, carry out enrichment; The bivalent mercury entered in the compound containing mercury in the monitored gas of absorption plant 204 is absorbed, and only remaining Elemental Mercury enters in the second enrichment resolver 205 and carries out enrichment after drying device 208 drying.When after the first enrichment resolver 202 and the second enrichment resolver 205 enrichment Preset Time, close the first propulsion system 20901 and the second propulsion system 20902, enrichment terminates.
Then the mercury in the first enrichment resolver 202 is resolved, open the 3rd switch 203 and the 6th switch 2020, by heater block 2014, enrichment means 2013 is heated, be heated to more than 500 DEG C, the Elemental Mercury be enriched in enrichment means 2013 decomposes, produce mercuryvapour, then pass into the carrier gas of constant flow rate, mercuryvapour is brought into pick-up unit 3 and detect.To be detected complete after, close the 3rd switch 203 and the 6th switch 2020, open the 4th switch 206 and the 7th switch 2021 carries out resolving to the Elemental Mercury in the second enrichment resolver 205 and detects.
When only needing the content detecting total mercury, operate the 5th switch 2019, drying device 208 can not be communicated with the second enrichment resolver 205, monitored gas is only by reforming unit 201, enrichment due to mercury needs the regular hour to complete, therefore, in order to improve the bioaccumulation efficiency of mercury, the bivalent mercury removal device 2 that the utility model embodiment provides is when surveying the total mercury content in monitored gas, first the 3rd switch 203 and the 6th switch 2020 is closed, open the 4th switch 206 and the 7th switch 2021, make Elemental Mercury enrichment on the second enrichment resolver 205; During mercury enrichment in the second enrichment resolver 205, open the 3rd switch 203 and the 4th switch 2020, close the 4th switch 206 and the 7th switch 2021, make Elemental Mercury enrichment on the first enrichment resolver 205, the efficiency that so alternately enrichment, parsing, detection make total mercury monitor is higher, adds the dirigibility of monitoring system.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a monitoring system, for monitoring the content of mercury in monitored gas, comprise the harvester (1) for gathering monitored gas from monitored environment, be converted into Elemental Mercury for the compound containing mercury in the monitored gas that gathered by described harvester (1) and export the bivalent mercury removal device (2) containing elemental mercury gas and the pick-up unit (3) for the amount that detects the Elemental Mercury that described bivalent mercury removal device (2) exports, it is characterized in that, monitoring system also comprises for generation of Elemental Mercury Standard Gases and described Elemental Mercury Standard Gases is passed into the calibrating installation (4) of described pick-up unit (3).
2. monitoring system according to claim 1, it is characterized in that, described calibrating installation (4) comprises carrier gas generator (401), compound containing mercury generator (402), reactant generator (403), reaction chamber (404), mixing chamber (406), first switch (407) and second switch (408), described carrier gas generator (401) is communicated with described reaction chamber (404), described compound containing mercury generator (402) is communicated with described reaction chamber (404), described reactant generator (403) is communicated with described reaction chamber (404), described reaction chamber (404) is communicated with described mixing chamber (406), described mixing chamber (406) is communicated with described pick-up unit (3), described first switch (407) flows into described reaction chamber (404) for the carrier gas controlled in described carrier gas generator (401), described second switch (408) flows into described reaction chamber (404) for the compound containing mercury controlled in described compound containing mercury generator (402).
3. monitoring system according to claim 2, it is characterized in that, described calibrating installation (4) also comprises vaporization chamber (405), described carrier gas generator (401) is communicated with described vaporization chamber (405), described compound containing mercury generator (402) is communicated with described vaporization chamber (405), described vaporization chamber (405) is communicated with described mixing chamber (406), described mixing chamber (406) is communicated with described pick-up unit (3) and described mixing chamber (406) is communicated with described harvester (1), described first switch (407) also flows into described vaporization chamber (405) for the carrier gas controlled in described carrier gas generator (401), described second switch (408) also flows into described vaporization chamber (405) for the compound containing mercury controlled in described compound containing mercury generator (402).
4. monitoring system according to claim 3, it is characterized in that, the first measuring apparatus (410) is provided with, the amount of carrier gas of described first measuring apparatus (410) for measuring described carrier gas generator (401) and flowing out between described carrier gas generator (401) and described first switch (407).
5. monitoring system according to claim 4, it is characterized in that, between described carrier gas generator (401) and described first measuring apparatus (410), be provided with dry mercury removal device (411), described dry mercury removal device (411) is for the moisture in the carrier gas that removes described carrier gas generator (401) and flow out and mercury.
6. monitoring system according to claim 3, it is characterized in that, between described compound containing mercury generator (402) and described second switch (408), be provided with second measuring apparatus (413) of the amount for measuring the compound containing mercury reagent that described compound containing mercury generator (402) is flowed out.
7. the monitoring system according to claim 1 to 6 any one, is characterized in that, described bivalent mercury removal device (2) is also for absorbing the compound containing mercury in described monitored gas.
8. monitoring system according to claim 7, it is characterized in that, described bivalent mercury removal device (2) comprise reforming unit (201) for the compound containing mercury in monitored gas being converted into Elemental Mercury with for carrying out the first enrichment resolver (202) of enrichment parsing to the Elemental Mercury exported through reforming unit (201), between described reforming unit (201) and described first enrichment resolver (202), the gas be provided with for controlling to export through described reforming unit (201) enters the 3rd switch (203) of described first enrichment resolver (202), also comprise absorption plant (204) for absorbing the compound containing mercury in described monitored gas with for carrying out the second enrichment resolver (205) of enrichment parsing to the Elemental Mercury exported through described absorption plant (204), between described absorption plant (204) and described second enrichment resolver (205), the gas be provided with for controlling to export through described absorption plant (204) enters the 4th switch (206) of described second enrichment resolver (205), described absorption plant (204) and described reforming unit (201) are communicated with described harvester (1) by heat tracing pipe (5) simultaneously.
9. monitoring system according to claim 8, is characterized in that,
The dry deacidification device (207) for removing moisture and sour gas in gas that described reforming unit (201) exports is provided with between described reforming unit (201) and described first enrichment resolver (202);
The drying device (208) for removing the moisture in gas that described absorption plant (204) exports is provided with between described absorption plant (204) and described second enrichment resolver (205).
10. monitoring system according to claim 8, it is characterized in that, described bivalent mercury removal device (2) also comprises the 3rd measuring apparatus (2010) and the 4th measuring apparatus (2011), the amount of gas of described 3rd measuring apparatus (2010) for measuring described first enrichment resolver (202) and exporting, the amount of gas of described 4th measuring apparatus (2011) for measuring described second enrichment resolver (205) and exporting.
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| CN201420868478.1U CN204422487U (en) | 2014-12-31 | 2014-12-31 | A kind of monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301188A (en) * | 2015-09-29 | 2016-02-03 | 杭州超距科技有限公司 | Automatic calibration device of coal-fired power plant flue gas mercury measuring instrument and control method |
| CN106841068A (en) * | 2017-01-23 | 2017-06-13 | 北京雪迪龙科技股份有限公司 | Prepare the body method of mercury vapour containing extra fine quality and Mercury In The Air monitoring system calibration method |
| 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 |
-
2014
- 2014-12-31 CN CN201420868478.1U patent/CN204422487U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301188A (en) * | 2015-09-29 | 2016-02-03 | 杭州超距科技有限公司 | Automatic calibration device of coal-fired power plant flue gas mercury measuring instrument and control method |
| CN106841068A (en) * | 2017-01-23 | 2017-06-13 | 北京雪迪龙科技股份有限公司 | Prepare the body method of mercury vapour containing extra fine quality and Mercury In The Air monitoring system calibration method |
| 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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