CN208672519U - A kind of mercury in flue gas test device - Google Patents
A kind of mercury in flue gas test device Download PDFInfo
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- CN208672519U CN208672519U CN201821379038.4U CN201821379038U CN208672519U CN 208672519 U CN208672519 U CN 208672519U CN 201821379038 U CN201821379038 U CN 201821379038U CN 208672519 U CN208672519 U CN 208672519U
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Abstract
The utility model discloses a kind of mercury in flue gas test devices, are related to environment monitoring device technical field.The test device includes sampler and detection device, sampler includes sampling gun, heat tracing pipeline and sampling host, sampling gun is fixed on walling of flue for acquiring the flue gas in flue, and sampling gun is provided with activated carbon adsorption pipe close to one end of walling of flue, sampling host is connected with multistage absorption device and drying device in turn for controlling and measuring sample gas volume, and between heat tracing pipeline and sampling host；Multistage absorption device includes sequentially connected KCl solution absorption bottle, HNO3‑H2O2Solution absorption bottle, KMnO4‑H2SO4Solution absorption bottle；Drying device is absorbed on silica gel bottle；Detection device is dual-beam Atomic absorption mercury vapourmeter, and the sample air inlet of detection device is connected to the exhanst gas outlet of sampler, so that the flue gas that sampled device obtains enters detection device detection through exhanst gas outlet.The test device can detect the mercury of variform, and test result is stablized.
Description
Technical field
The utility model relates to environment monitoring device technical field more particularly to a kind of mercury in flue gas test devices.
Background technique
Mercury has the characteristics that accumulation property due to its severe toxicity, high volatile and in biological chain, has become global follow
Ring pollution element, in recent years by the very big concern of domestic and foreign scholars.Coal-burning power plant's discharge mercury can account for the 70% of anthropogenic discharge,
Therefore coal-burning power plant's mercury pollution emission control becomes the another focus of current environmental protection.The average content of mercury is about in China's coal
For 0.22mg/Kg, be much higher than world average level 0.13mg/Kg, thus the control of coal-burning power plant, China mercury pollution face it is severeer
Test.
The mercury of coal-burning power plant's discharge mainly has nonvalent mercury and bivalent mercury, tests nonvalent mercury and divalent in flue gas in the prior art
The technological means of mercury is carried out by equipment and instrument mostly, such as mercury vapourmeter, and principle is substantially all to utilize various methods by mercury
Different shape is converted, and is obtained a kind of single mercury shape, is recycled atomic fluorescence spectrum, the cold steam of Atomic absorption
Method of testing etc. carries out analysis measurement.For example, Japan's MV-50 type mercury vapourmeter, is to be decomposed thermally to form nonvalent mercury steaming in combustion tube
Gas is further tested by absorption and desorption with Clod Vapour Atomic Absorption.
Mercury test device in the prior art the problem is that: instrument for determining Hg is although sensitive quick, can accurately obtain cigarette
The content of gaseous elemental mercury in gas, gaseous state bivalent mercury and particle mercury, but it is expensive, and only large-scale scientific research institutions adopt at present
Purchase is not suitable for daily mercury monitoring, and is suitable for the test device of daily monitoring, is generally only capable of testing the mercury of single form；Separately
On the one hand, Atomic absorption mercury vapourmeter in the prior art is single beam mostly, and pre- heat-stable time is longer, for a long time using stabilization
Property is undesirable, so that measurement result is inaccurate.
Utility model content
One of purpose of the utility model is to propose a kind of mercury in flue gas test device, solves mercury in the prior art
Test device is generally only capable of testing the technical problem of single form mercury and mercury vapourmeter measurement result inaccuracy.The utility model is excellent
Many technical effects elaboration as detailed below that selecting technology scheme can be generated.
To achieve the above object, the utility model provides following technical scheme:
The mercury in flue gas test device of the utility model includes sampler and the detection being connected to sampler dress
It sets, wherein
The sampler includes sampling gun, heat tracing pipeline and sampling host, wherein the sampling gun is fixed on walling of flue
On with for acquiring the flue gas in flue, and the sampling gun is provided with activated carbon adsorption close to one end of the walling of flue
Pipe, the sampling host are used to controlling and measuring sample gas volume, and the heat tracing pipeline and the sampling host it
Between be connected with multistage absorption device and drying device in turn；
The multistage absorption device includes sequentially connected KCl solution absorption bottle, HNO3-H2O2Solution absorption bottle, KMnO4-
H2SO4Solution absorption bottle；The drying device is absorbed on silica gel bottle；
The detection device be dual-beam Atomic absorption mercury vapourmeter, and the sample air inlet of the detection device with it is described
The exhanst gas outlet of sampler is connected to, so that the flue gas obtained through the sampler enters the detection through the exhanst gas outlet
Device detection.
According to a preferred embodiment, the sampler further includes ice bath case, and the KCl solution absorption bottle,
The HNO3-H2O2Solution absorption bottle, the KMnO4-H2SO4Solution absorption bottle and the absorbed on silica gel bottle are placed in the ice bath
In case.
According to a preferred embodiment, the sampling host includes adopting by the sampling pump of pipeline connection, for adjusting
The flow control valve and gas flow metering device of sample flow, wherein
The both ends of the sampling pump are parallel with vacuum degree regulating valve,
The gas flow metering device is used for the volume of meter gaseous.
According to a preferred embodiment, the sampling gun includes at least two and adopts positioned at the sampling gun body front end
Sample pipe, the activated carbon adsorption pipe are located at the sampling pipe close to the end of the walling of flue, and the sampling pipe with it is described
Sampling gun body junction be provided with the sealing ring for sealing, wherein the sealing ring be copper O-ring seal and/or
Teflin ring.
According to a preferred embodiment, the front end of the sampling gun is provided with protective case, and the protective case includes sampling
Protection pipe and the nut connecting with the sampling protection pipe, the nut is for fixing the sampling pipe.
According to a preferred embodiment, the inlet of the gas flow metering device is additionally provided with temperature sensing before meter
Device.
According to a preferred embodiment, the detection device includes mercury lamp, collimating mirror, slit, sample absorption cell, reference
Absorption cell, condenser lens, optical filter and double-channel detector, wherein
The mercury lamp is for issuing the light comprising mercury characteristic spectral line；
The collimating mirror is located at after the mercury lamp, and the collimating mirror collimates the light that the mercury lamp issues for directional light；
The slit is located at after the collimating mirror, and the directional light is divided into two bundles collimated light beam by the slit；
The sample absorption cell and the reference absorption cell are located at after the two beams collimated light beam, and the sample is inhaled
One end of receives pond is connected with air inlet, and the other end is connect by the first mercury adsorption tube with one end of the reference absorption cell, described
The other end of reference absorption cell connects gas outlet by vacuum pump；
The condenser lens is located at after the sample absorption cell and the reference absorption cell；
The optical filter is located at after the condenser lens；
The double-channel detector is located at after the optical filter, and the optical signal that the double-channel detector will test turns
Become electric signal.
According to a preferred embodiment, the air inlet include by the second mercury adsorption tube connect zero air inlet of school and
Sample air inlet, and zero air inlet of the school and the sample air inlet are connect with three-way magnetic valve, so that the sample is inhaled
Receives pond passes through the three-way magnetic valve selectable connection zero air inlet of school or sample air inlet.
According to a preferred embodiment, flowmeter is additionally provided between the vacuum pump and the gas outlet.
According to a preferred embodiment, the optical filter is the narrow band filter for only allowing the light of 254nm wavelength to pass through；Institute
Stating double-channel detector is binary channels silicon photodiode detector.
Mercury in flue gas test device provided by the utility model at least has following advantageous effects:
Activated carbon adsorption pipe is arranged in the end of sampling gun in the mercury in flue gas test device of the utility model, passes through active carbon
Capture of the sampling gun to mercury can be enhanced in the suction-operated of adsorption tube, and the mercury in flue gas test device of the utility model is logical
Setting multistage absorption device is crossed, the mercury of various forms in flue gas is can absorb, specifically, KCl solution absorption bottle can be used for absorbing two
Valence state mercury, HNO3-H2O2Solution absorption bottle, KMnO4-H2SO4Solution absorption bottle can be used for absorbing elemental mercury, i.e. nonvalent mercury, make
The test device for obtaining the utility model can detect the mercury of variform；On the other hand, the drying device of the utility model can be used for
The moisture in flue gas is absorbed, moisture is avoided to damage caused by instrument and caused measurement error.The detection of the utility model
Device be dual-beam Atomic absorption mercury vapourmeter, can solve pre- heat-stable time existing for single beam Atomic absorption mercury vapourmeter compared with
Long, long-time stability in use is undesirable, so that the technical problem of measurement result inaccuracy.
In addition, the utility model optimal technical scheme can also have the following technical effects:
Ice bath case is arranged in the utility model optimal technical scheme, and multistage absorption device and drying device are placed in the ice bath case
In, multistage absorption device and drying device can be made to be in zero degrees celsius hereinafter, lower favors low temperature is in the absorption of mercury in flue gas
And the removal of moisture.
Sampling pipe is set to the front of sampling gun by the utility model optimal technical scheme, directly can contact to be adopted
The flue gas of collection reduces pipeline to the Adsorption Effect of mercury.Further, useful in the junction setting of sampling pipe and sampling gun body
In the sealing ring of sealing, the flue gas that can avoid sampling pipe acquisition is leaked from the junction of the two.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the module diagram of one preferred embodiment of mercury in flue gas test device；
Fig. 2 is the module diagram of one preferred embodiment of sampling apparatus；
Fig. 3 is the front end partial enlargement diagram of one preferred embodiment of sampling gun；
Fig. 4 is the structural schematic diagram of one preferred embodiment of multistage absorption device；
Fig. 5 is the structural schematic diagram of one preferred embodiment of detection device.
10- sampler in figure；20- detection device；101- protective case；102- walling of flue；103- sampling pipe；104- sampling
Rifle；105- heat tracing pipeline；106- multistage absorption device；107- drying device；108- vacuum degree regulating valve；109- sampling pump；
Temperature sensor before 110- is counted；111- spinner flowmeter；112- flow control valve；113- gas flow metering device；114- cigarette
Gas outlet；115- samples host；116- samples protection pipe；117- nut；A- smoke air inlet, B- system evacuation mouth；1061-
KCl solution absorption bottle；1062-HNO3-H2O2Solution absorption bottle；1063-HNO3-H2O2Solution absorption bottle；1064- ice bath case；
201- mercury lamp；202- collimating mirror；203- slit；The first mercury adsorption tube of 204-；205- sample absorption cell；206- reference absorption cell；
The second mercury adsorption tube of 207-；Zero air inlet of the school 208-；209- three-way magnetic valve；210- sample air inlet；211- Dual channel detection
Device；212- condenser lens；213- optical filter；214- vacuum pump；215- flowmeter；The gas outlet 216-.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
The mercury in flue gas test device of 1~5 pair of the utility model is described in detail with reference to the accompanying drawing.
As shown in Figure 1, mercury in flue gas test device includes sampler 10 and the detection device that is connected to sampler 10
20.Preferably, sampler 10 includes sampling gun 104, heat tracing pipeline 105 and sampling host 115.Wherein, sampling gun 104 is fixed
In with for acquiring the flue gas in flue, and sampling gun 104 is provided with work close to one end of walling of flue 102 on walling of flue 102
Property charcoal adsorption tube.Sampling host 115 is for controlling and measuring sample gas volume.Heat tracing pipeline 105 and sampling host 115 it
Between be connected with multistage absorption device 106 and drying device 107 in turn.It is furthermore preferred that multistage absorption device 106 includes being sequentially connected
KCl solution absorption bottle 1061, HNO3-H2O2Solution absorption bottle 1062, KMnO4-H2SO4Solution absorption bottle 1063.Drying device
107 be absorbed on silica gel bottle.Preferably, detection device 20 is dual-beam Atomic absorption mercury vapourmeter, and the sample of detection device 20
Air inlet 210 is connected to the exhanst gas outlet 114 of sampler 10, so that the flue gas that sampled device 10 obtains is through exhanst gas outlet
114, which enter detection device 20, detects.
Activated carbon adsorption pipe is arranged in the end of sampling gun 104 in the mercury in flue gas test device of the utility model, passes through work
Property charcoal adsorption tube suction-operated, can be enhanced capture of the sampling gun 104 to mercury, and the mercury in flue gas test of the utility model
Device can absorb the mercury of various forms in flue gas, specifically, KCl solution absorption bottle 1061 by setting multistage absorption device 106
It can be used for absorbing divalent state mercury, HNO3-H2O2Solution absorption bottle 1062, KMnO4-H2SO4Solution absorption bottle 1063 can be used for absorbing
Elemental mercury, i.e. nonvalent mercury, so that the test device of the utility model can detect the mercury of variform；On the other hand, this is practical
Novel drying device 107 can be used for absorbing the moisture in flue gas, and moisture is avoided to damage caused by instrument and caused survey
Measure error.The detection device 20 of the utility model is dual-beam Atomic absorption mercury vapourmeter, can solve the survey of single beam Atomic absorption
Pre- heat-stable time existing for mercury instrument is longer, and long-time stability in use is undesirable, so that the technology of measurement result inaccuracy is asked
Topic.
According to a preferred embodiment, activated carbon adsorption Guan Kewei two-part activated carbon adsorption pipe can also be three-stage
Activated carbon adsorption pipe.The capture of sulfide in flue gas and/or nitride meeting inhibitory activity charcoal to mercury is reduced, it can be in activated carbon adsorption
Carbonate based compounds are added in the front end of pipe, to remove the sour gas in flue gas.
According to a preferred embodiment, sampler 10 further includes ice bath case 1064.Preferably, KCl solution absorption bottle
1061、HNO3-H2O2Solution absorption bottle 1062, KMnO4-H2SO4Solution absorption bottle 1063 and absorbed on silica gel bottle are placed in ice bath case
In 1064, as shown in Figure 4.Ice bath case 1064, multistage absorption device 106 and dry dress is arranged in the utility model optimal technical scheme
107 are set to be placed in the ice bath case 1064, multistage absorption device 106 and drying device 107 can be made to be in zero degrees celsius hereinafter, compared with
Low favors low temperature is in the absorption of mercury in flue gas and the removal of moisture.
According to a preferred embodiment, sampling host 115 includes the sampling pump 109 being connected to by pipeline, for adjusting
The flow control valve 112 and gas flow metering device 113 of sampling flow, as shown in Figure 2.Wherein, the both ends of sampling pump 109 are simultaneously
It is associated with vacuum degree regulating valve 108, gas flow metering device 113 is used for the volume of meter gaseous.Gas flow metering device 113
Inlet be additionally provided with meter before temperature sensor 110.It is also set up between temperature sensor 110 before flow control valve 112 and meter
There is spinner flowmeter 111.Sampling system main component is debugged according to 30B standard configuration.
According to a preferred embodiment, sampling gun 104 includes at least two and is located at the sampling of 104 ontology front end of sampling gun
Pipe 103, activated carbon adsorption pipe are located at sampling pipe 103 close to the end of walling of flue 102, and sampling pipe 103 with sampling gun 104
The junction of body is provided with the sealing ring for sealing, wherein sealing ring is that copper O-ring seal and/or polytetrafluoroethylene (PTFE) are close
Seal.Sampling pipe 103 is set to the front of sampling gun 104 by the utility model optimal technical scheme, can directly be contacted and be wanted
The flue gas of acquisition reduces pipeline to the Adsorption Effect of mercury.Further, in the junction of sampling pipe 103 and 104 ontology of sampling gun
It is provided with the sealing ring for sealing, the flue gas that sampling pipe 103 acquires is can avoid and is leaked from the junction of the two.
According to a preferred embodiment, the front end of sampling gun 104 is provided with protective case 101, and protective case 101 includes sampling
Protection pipe 116 and the nut 117 connecting with sampling protection pipe 116, nut 117 are used for fixed sample pipe 103, as shown in Figure 3.For
Reduction sampling pipe 103 is damaged and particle mercury enters sampling pipe 103, and the utility model optimal technical scheme is in sampling gun 104
Front end be arranged protective case 101, protective case 101 is made of stainless steel tube and M10 nut, by stainless steel tube and M10 nut-welding
Together, M10 nut is used for fixed sample pipe 103, and sampling pipe 103 is completely disposed in protective case 101 in sampling process, Neng Gouyou
Effect prevents sampling pipe 103 in moving process the case where clashing and breaking.
According to a preferred embodiment, the detection device 20 of the utility model optimal technical scheme includes mercury lamp 201, standard
Straight mirror 202, slit 203, sample absorption cell 205, reference absorption cell 206, condenser lens 212, optical filter 213 and Dual channel detection
Device 211, as shown in Figure 5.Wherein, mercury lamp 201 is for issuing the light comprising mercury characteristic spectral line.Collimating mirror 202 be located at mercury lamp 201 it
Afterwards, collimating mirror 202 collimates the light that mercury lamp 201 issues for directional light.Slit 203 is located at after collimating mirror 202, and slit 203 will
Directional light is divided into two bundles collimated light beam.Sample absorption cell 205 and reference absorption cell 206 are located at after two beam collimated light beams,
One end of sample absorption cell 205 is connected with air inlet, and the other end passes through the first mercury adsorption tube 204 and the one of reference absorption cell 206
The other end of end connection, reference absorption cell 206 connects gas outlet 216 by vacuum pump 214.Condenser lens 212 is located at sample suction
After receives pond 205 and reference absorption cell 206.Optical filter 213 is located at after condenser lens 212.Double-channel detector 211 is located at filter
After mating plate 213, the optical signal that double-channel detector 211 will test is changed into electric signal.
Referring again to Fig. 5, the optical system of the utility model detection device 20 is described as follows: it includes mercury that mercury lamp 201, which issues,
The light of characteristic spectral line, the light that collimating mirror 202 issues mercury lamp 201 collimate as directional light, and directional light is divided into two bundles by slit 203
Collimated light beam, two beam collimated light beams pass through sample absorption cell 205 and reference absorption cell 206 respectively, then pass through condenser lens 212
It is filtered again by optical filter 213 after focusing.Two beams pass through the light of optical filter 213, are finally irradiated on double-channel detector 211,
The optical signal that will test is changed into electric signal.
According to a preferred embodiment, optical filter 213 is the narrow band filter for only allowing the light of 254nm wavelength to pass through.It is double
Channel detector 211 is binary channels silicon photodiode detector.Preferably, it can also be had in double-channel detector 211 low
Noise signal amplifying circuit and A/D converter, to carry out signal amplification and A/D conversion.Double-channel detector 211 is connected to master control
Circuit board and computer processed, to calculate the testing result of mercury in flue gas by main control circuit and computer.
According to a preferred embodiment, the first mercury adsorption tube 204 can have thermal analysis apparatus, and thermal analysis apparatus is used for
It activates the first mercury adsorption tube 204 or carries out preenrichment Thermal desorption mode and measure.
According to a preferred embodiment, air inlet includes zero air inlet 208 of school connected by the second mercury adsorption tube 207
With sample air inlet 210, and zero air inlet 208 of school and sample air inlet 210 are connect with three-way magnetic valve 209, so that sample
Absorption cell 205 passes through selectable zero air inlet 208 of connection school of three-way magnetic valve 209 or sample air inlet 210.
According to a preferred embodiment, flowmeter 215 is additionally provided between vacuum pump 214 and gas outlet 216.
According to a preferred embodiment, the working principle of the utility model optimal technical scheme detection device are as follows: open
Vacuum pump 214, the gaseous sample containing mercury initially enter sample absorption cell 205, then pass through the first mercury adsorption tube 204, by sample
Mercury in product all adsorbs, and enters reference absorption cell 206 by the sample after the first mercury adsorption tube 204, finally by gas outlet
216 discharges obtain sample after carrying out logarithm operation subtractive by the two ways of optical signals of sample absorption cell 205 and reference absorption cell 206
The absorption value of mercury in product, this absorption value is directly proportional to the content of mercury in sample, meets lambert beer law.
According to a preferred embodiment, the workflow of the utility model optimal technical scheme detection device are as follows:, first
Power supply, instrument self checking and preheating a few minutes are opened, starts vacuum pump 214, solenoid valve 209 is switched to zero air inlet 208 of school, gas
Body falls the mercury in gas by the second mercury adsorption tube 207, absorption, and then gas passes through sample absorption cell 205 respectively and reference is inhaled
Receives pond 206 is all zero mercury gas at this moment in sample absorption cell 205 and reference absorption cell 206, and the light issued to mercury lamp 201 does not have
It absorbs, runs zero program of school, rectify an instrument zero point.Solenoid valve 209 is switched to measurement air inlet 210, gaseous sample enters sample
Product absorption cell 205, then by the first mercury adsorption tube 204, the mercury in gaseous sample is fallen in absorption, and then gas is absorbed by reference
Pond 206, at this moment operating measurement program, measurement pass through the light of sample absorption cell 205 and reference absorption cell 206, carry out operation, obtain
Absorbance is then converted into the concentration of mercury.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (10)
1. a kind of mercury in flue gas test device, which is characterized in that even including sampler (10) and with the sampler (10)
Logical detection device (20), wherein
The sampler (10) includes sampling gun (104), heat tracing pipeline (105) and sampling host (115), wherein described to adopt
Sample rifle (104) is fixed on walling of flue (102) for acquiring the flue gas in flue, and the close institute of the sampling gun (104)
The one end for stating walling of flue (102) is provided with activated carbon adsorption pipe, and the sampling host (115) is for controlling and measuring sample gas
Volume, and multistage absorption device is connected in turn between the heat tracing pipeline (105) and the sampling host (115)
(106) and drying device (107)；
The multistage absorption device (106) includes sequentially connected KCl solution absorption bottle (1061), HNO3-H2O2Solution absorption bottle
(1062)、KMnO4-H2SO4Solution absorption bottle (1063)；The drying device (107) is absorbed on silica gel bottle；
The detection device (20) is dual-beam Atomic absorption mercury vapourmeter, and the sample air inlet of the detection device (20)
(210) it is connected to the exhanst gas outlet (114) of the sampler (10), so that the flue gas obtained through the sampler (10) passes through
The exhanst gas outlet (114) enters the detection device (20) and detects.
2. mercury in flue gas test device according to claim 1, which is characterized in that the sampler (10) further includes ice
Bath cabinet (1064), and the KCl solution absorption bottle (1061), the HNO3-H2O2It is solution absorption bottle (1062), described
KMnO4-H2SO4Solution absorption bottle (1063) and the absorbed on silica gel bottle are placed in the ice bath case (1064).
3. mercury in flue gas test device according to claim 2, which is characterized in that the sampling host (115) includes logical
Sampling pump (109), the flow control valve (112) and gas flow metering device for adjusting sampling flow of piping connection
(113), wherein
The both ends of the sampling pump (109) are parallel with vacuum degree regulating valve (108),
The gas flow metering device (113) is used for the volume of meter gaseous.
4. mercury in flue gas test device according to claim 3, which is characterized in that the sampling gun (104) includes at least
Two are located at the sampling pipe (103) of the sampling gun (104) ontology front end, and the activated carbon adsorption pipe is located at the sampling pipe
(103) end of close walling of flue (102), and the connection of the sampling pipe (103) and the sampling gun (104) ontology
Place is provided with the sealing ring for sealing, wherein the sealing ring is copper O-ring seal and/or teflin ring.
5. mercury in flue gas test device according to claim 4, which is characterized in that the front end of the sampling gun (104) is set
It is equipped with protective case (101), the protective case (101) includes sampling protection pipe (116) and connect with the sampling protection pipe (116)
Nut (117), the nut (117) is for fixing the sampling pipe (103).
6. mercury in flue gas test device according to claim 5, which is characterized in that the gas flow metering device
(113) inlet is additionally provided with temperature sensor (110) before meter.
7. mercury in flue gas test device according to one of claims 1 to 6, which is characterized in that the detection device (20)
Including mercury lamp (201), collimating mirror (202), slit (203), sample absorption cell (205), reference absorption cell (206), condenser lens
(212), optical filter (213) and double-channel detector (211), wherein
The mercury lamp (201) is for issuing the light comprising mercury characteristic spectral line；
The collimating mirror (202) is located at after the mercury lamp (201), what the collimating mirror (202) issued the mercury lamp (201)
Light collimation is directional light；
The slit (203) is located at after the collimating mirror (202), and the directional light is divided into two bundles flat by the slit (203)
Row light beam；
The sample absorption cell (205) and the reference absorption cell (206) are located at after the two beams collimated light beam, described
One end of sample absorption cell (205) is connected with air inlet, and the other end passes through the first mercury adsorption tube (204) and the reference absorption cell
(206) other end of one end connection, the reference absorption cell (206) passes through vacuum pump (214) connection gas outlet (216)；
The condenser lens (212) is located at after the sample absorption cell (205) and the reference absorption cell (206)；
The optical filter (213) is located at after the condenser lens (212)；
The double-channel detector (211) is located at after the optical filter (213), and the double-channel detector (211) will test
To optical signal be changed into electric signal.
8. mercury in flue gas test device according to claim 7, which is characterized in that the air inlet includes passing through the second mercury
Zero air inlet of school (208) and sample air inlet (210) of adsorption tube (207) connection, and zero air inlet of the school (208) and institute
It states sample air inlet (210) to connect with three-way magnetic valve (209), so that the sample absorption cell (205) is powered by described three
Magnet valve (209) selectable connection zero air inlet of school (208) or sample air inlet (210).
9. mercury in flue gas test device according to claim 7, which is characterized in that the vacuum pump (214) and it is described go out
Flowmeter (215) are additionally provided between port (216).
10. mercury in flue gas test device according to claim 7, which is characterized in that the optical filter (213) is only to allow
The narrow band filter that the light of 254nm wavelength passes through；The double-channel detector (211) is the detection of binary channels silicon photoelectric diode
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821379038.4U CN208672519U (en) | 2018-08-24 | 2018-08-24 | A kind of mercury in flue gas test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821379038.4U CN208672519U (en) | 2018-08-24 | 2018-08-24 | A kind of mercury in flue gas test device |
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| Publication Number | Publication Date |
|---|---|
| CN208672519U true CN208672519U (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821379038.4U Expired - Fee Related CN208672519U (en) | 2018-08-24 | 2018-08-24 | A kind of mercury in flue gas test device |
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| Country | Link |
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| CN (1) | CN208672519U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426526A (en) * | 2020-04-16 | 2020-07-17 | 南京理工大学 | Device and method for simultaneously sampling multiple-valence mercury in coal-fired flue gas |
| CN113466212A (en) * | 2021-06-18 | 2021-10-01 | 中南大学 | Flue gas heavy metal monitoring system and monitoring method thereof |
-
2018
- 2018-08-24 CN CN201821379038.4U patent/CN208672519U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426526A (en) * | 2020-04-16 | 2020-07-17 | 南京理工大学 | Device and method for simultaneously sampling multiple-valence mercury in coal-fired flue gas |
| CN113466212A (en) * | 2021-06-18 | 2021-10-01 | 中南大学 | Flue gas heavy metal monitoring system and monitoring method thereof |
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