CN103822934A - On-line detection device and method for heavy metal content in flue gas - Google Patents
On-line detection device and method for heavy metal content in flue gas Download PDFInfo
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- CN103822934A CN103822934A CN201410056230.XA CN201410056230A CN103822934A CN 103822934 A CN103822934 A CN 103822934A CN 201410056230 A CN201410056230 A CN 201410056230A CN 103822934 A CN103822934 A CN 103822934A
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Abstract
The invention discloses an on-line detection device and method for heavy metal content in a flue gas, and the device comprises a gas sampler 10, a belt type active filter membrane 80, a filter membrane transport unit 30, an XRF (X-ray fluorescence) detector 40, a wireless communication unit 90 and a control unit; the whole device has the advantages of being simple and ingenious in structure, and easy to popularize; according to the detection method, an X-ray fluorescence spectroscopy method is used for qualitative and quantitative analysis of harmful elements in the flue gas, a burdensome chemical method test is avoided, work efficiency is improved, at the same time the test precision reaches ppm level; by design of the belt type active filter membrane, a simple method for solving the difficult transfer problem between the sampler collection and the detector is provided, and by design of materials of the belt type active filter membrane, enrichment and detection of multiple-state heavy metals can be achieved, and the detection is timely, and high in efficiency.
Description
Technical field
The present invention relates to on-line measuring device and the method for content of beary metal in a kind of flue gas.
Background technology
Non-ferrous metal pyrometallurgical smelting process (comprising dry, sintering, roasting, melting, blowing, fuming, volatilization, founding etc.), produce a large amount of flue gases, the heavy metal element of discharging with flue gas, in atmosphere, stop for a long time, can be converted into the compound that toxicity is very large, and then harm humans health and ecologic environment, therefore monitor significant to the heavy metal pollution in flue gas.The detection of particle in the gas of traditional heavy metal accumulation, what conventionally adopt is atomic absorption spectrum, atomic emission spectrum, atomic fluorescence spectrophotometry, UV-VIS spectrophotometry etc., these methods all need particle enrichment filter membrane in gas the complicated pre-treatment such as to clear up, and additive method generally can only be tested a kind of element except atomic emission spectrum.And only consider to be enrichment and the detection of heavy metal of solid granulates state.These traditional methods can not realize on-line real time monitoring, are merely able to obtain the mean value of a period of time, and do not consider the detection of gaseous state heavy metal, can not observe in time pollution condition, be difficult to monitoring actual operating state, and sampling and analysing are consuming time very long.Therefore the on-line measurement that, realizes flue gas detection device for multi metallic elements is necessary.USDOE and Environmental Protection Agency be the condition precedent using development continuous blow-down monitoring technology as the discharge of production control factory smoke.
X-ray fluorescence spectra is a kind of original position, harmless detection mode, the detection device for multi metallic elements in can one-shot measurement gas after standard model is demarcated.X-ray fluorescence spectra detection technique (XRF) has realized miniaturization, portability at present, all has larger transformation and room for promotion aspect data transmission and data processing.
Summary of the invention
The invention provides on-line measuring device and the method for content of beary metal in a kind of flue gas, its object is to overcome existing chemical detection method complex procedures and length consuming time in prior art, can not observe in time pollution condition, be difficult to the problem of monitoring actual operating state.
An on-line measuring device for content of beary metal in flue gas, comprises gas sampler 10, belt activated filter film film 80, filter membrane delivery unit 30, XRF detecting device 40, wireless communication unit 90 and control module;
Described gas sampler is provided with sampling cavity 20, sampling cavity is divided into inlet chamber 21 and outlet chamber 22, inlet chamber top is provided with air intake opening 23, described air intake opening is connected with the sampling conduit of described gas sampler, outlet chamber below is provided with gas outlet 24, described gas outlet is connected with aspiration pump, and described belt activated filter film film is between inlet chamber and outlet chamber; Described inlet chamber and outlet chamber docking, the gap 25 that allows belt activated filter film film pass is left in centre;
Described filter membrane delivery unit at least comprises two wheel discs, is respectively initiatively wheel disc and driven wheel disc, and one end of described belt activated filter film film is wound on driven wheel disc, and the other end of described belt activated filter film film is wound on active wheel disc; The equidirectional synchronous rotation of described active wheel disc and driven wheel disc drives belt activated filter film film to pass through successively sampling cavity and XRF detecting device, and make belt filtering membrane by driven wheel disc to driving wheel travelling expenses around;
Aspiration pump in described gas sampler, the detector switch of XRF detecting device and for driving the initiatively motor of wheel disc to be all connected with control module;
Described XRF detecting device 40 carries out data communication by wireless communication unit 90 and remote terminal.
The sampling cavity below of described gas sampler is provided with coding unit 60, and described coding unit is controlled by control module.
On described belt activated filter film film, all scribble active material or filter membrane uniformly-spaced scribbles active material on region, the spacing distance scribbling between the adjacent filter membrane region of active material is the spacing between XRF detecting device and described sampling cavity.
Filter membrane uniformly-spaced scribbles active material on region and refers to that belt activated filter film film the preceding paragraph scribbles active material, and one section is not coated with active material, and the belt activated filter film film length that is not coated with active material is the spacing between XRF detecting device and described sampling cavity.
Described active material layer is in organic high molecular layer, glass fibre membrane, quartz film and one or more of metal-organic framework materials film.
On described filter membrane delivery unit, be also provided with multiple runners for fixing belt activated filter film film.
On the sampling conduit of described gas sampler, be provided with heating unit and be provided with temperature sensor for detection of sampling conduit in flue-gas temperature, described heating unit is controlled by control module.
The online test method of content of beary metal in a kind of flue gas, adopt the on-line measuring device of content of beary metal in described flue gas, gas in gas sampler collecting flue, utilize the aspiration pump work in gas sampler, make flue gas pass belt active filter film, the heavy metal particles in flue gas and heavy metal flue gas are adsorbed and are enriched on belt active filter film; When XRF detecting device detects that the belt active filter film that contains heavy metal element is through out-of-date, control module sends steering order and stops machine operation, make filter membrane delivery unit stop transmitting, XRF detecting device starts the heavy metal on belt active filter film to carry out determination and analysis, and analysis result XRF detecting device being obtained by wireless communication unit transfers to remote terminal.
When heavy metal particles in described flue gas and heavy metal flue gas are adsorbed and are enriched on belt active filter film, described coding unit carries out coding to belt active filter film, and described coding information comprises coding time and sampling duration.
Each working time of aspiration pump in described gas sampler is identical with detection and the analysis time of described XRF detecting device;
Be that aspiration pump is started working for synchronizeing with XRF detecting device, in the time that aspiration pump quits work, delivery unit just starts transmission, until next aspiration pump and XRF detecting device restart work.
Beneficial effect
Compared with prior art, advantage of the present invention is as follows:
Utilize x-ray fluorescence spectroscopy to carry out qualitative and quantitative analysis to the harmful element in flue gas, avoided the lengthy and tedious of chemical method test, improved work efficiency, measuring accuracy reaches ppm rank simultaneously; The design of belt activated filter film film provides a kind of straightforward procedure that transmits a difficult problem between sample collection and detecting device that solves; Can realize enrichment and the detection of various states heavy metal by the material of design belt activated filter film film; By the control of control module, can meet unmanned, automatic operation requirement continuously; By design wireless transmission, can avoid the problem that flue gas inspection result cannot be transmitted out due to the damage of transmission line, improve the reliability of system; By coding printing equipment, can realize the time mark of filter membrane sample, recheck in preservation, the laboratory of being convenient to sample, management and time comparison.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention;
Fig. 2 is the structural representation of sampling cavity in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As depicted in figs. 1 and 2, the on-line measuring device of content of beary metal in a kind of flue gas, comprises gas sampler 10, belt activated filter film film 80, filter membrane delivery unit 30, XRF detecting device 40, wireless communication unit 90 and control module;
Described gas sampler is provided with sampling cavity 20, sampling cavity is divided into inlet chamber 21 and outlet chamber 22, inlet chamber top is provided with air intake opening 23, described air intake opening is connected with the sampling conduit of described gas sampler, outlet chamber below is provided with gas outlet 24, described gas outlet is connected with aspiration pump, and described belt activated filter film film is between inlet chamber and outlet chamber; Described inlet chamber and outlet chamber docking, the gap 25 that allows belt activated filter film film pass is left in centre;
Described filter membrane delivery unit at least comprises two wheel discs, is respectively initiatively wheel disc and driven wheel disc, and one end of described belt activated filter film film is wound on driven wheel disc, and the other end of described belt activated filter film film is wound on active wheel disc; The equidirectional synchronous rotation of described active wheel disc and driven wheel disc drives belt activated filter film film to pass through successively sampling cavity and XRF detecting device, and make belt filtering membrane by driven wheel disc to driving wheel travelling expenses around;
Aspiration pump in described gas sampler, the detector switch of XRF detecting device and for driving the initiatively motor of wheel disc to be all connected with control module;
Described XRF detecting device 40 carries out data communication by wireless communication unit 90 and remote terminal.The accuracy of detection of XRF can reach 10
-6-10
-8, therefore, the measuring accuracy of this device can reach ppm rank.
The sampling cavity below of described gas sampler is provided with coding unit 60, and described coding unit is controlled by control module.
On described belt activated filter film film, all scribble active material or filter membrane uniformly-spaced scribbles active material on region, the spacing distance scribbling between the adjacent filter membrane region of active material is the spacing between XRF detecting device and described sampling cavity.
Filter membrane uniformly-spaced scribbles active material on region and refers to that belt activated filter film film the preceding paragraph scribbles active material, and one section is not coated with active material, and the belt activated filter film film length that is not coated with active material is the spacing between XRF detecting device and described sampling cavity.
Described active material layer is in organic high molecular layer, glass fibre membrane, quartz film and one or more of metal-organic framework materials film.
On described filter membrane delivery unit, be also provided with multiple runners for fixing belt activated filter film film.
On the sampling conduit of described gas sampler, be provided with heating unit and be provided with temperature sensor for detection of sampling conduit in flue-gas temperature, described heating unit is controlled by control module.
The online test method of content of beary metal in a kind of flue gas, adopt the on-line measuring device of content of beary metal in described flue gas, gas in gas sampler collecting flue, utilize the aspiration pump work in gas sampler, make flue gas pass belt active filter film, the heavy metal particles in flue gas and heavy metal flue gas are adsorbed and are enriched on belt active filter film; When XRF detecting device detects that the belt active filter film that contains heavy metal element is through out-of-date, control module sends steering order and stops machine operation, make filter membrane delivery unit stop transmitting, XRF detecting device starts the heavy metal on belt active filter film to carry out determination and analysis, and analysis result XRF detecting device being obtained by wireless communication unit transfers to remote terminal.
When heavy metal particles in described flue gas and heavy metal flue gas are adsorbed and are enriched on belt active filter film, described coding unit carries out coding to belt active filter film, and described coding information comprises coding time and sampling duration.
Each working time of aspiration pump in described gas sampler is identical with detection and the analysis time of described XRF detecting device.
Be that aspiration pump is started working for synchronizeing with XRF detecting device, in the time that aspiration pump quits work, delivery unit just starts transmission, until next aspiration pump and XRF detecting device restart work.
Utilize this device to carry out analytical test to the gas containing heavy metal, obtain and be enriched in Cu in filter membrane, Zn, the content of Pb,, with conventional Analysis of Heavy Metal method ICP, the sample of enriching heavy metal being detected simultaneously, result contrast is as shown in table 1.Both testing results are close, illustrate that this device can carry out analyzing and testing fast to flue gas heavy metal content.
The table with test results that table 1 contains heavy metal gas
Claims (9)
1. an on-line measuring device for content of beary metal in flue gas, is characterized in that, comprises gas sampler (10), belt activated filter film film (80), filter membrane delivery unit (30), XRF detecting device (40), wireless communication unit 90 and control module;
Described gas sampler is provided with sampling cavity (20), sampling cavity is divided into inlet chamber (21) and outlet chamber (22), inlet chamber top is provided with air intake opening (23), described air intake opening is connected with the sampling conduit of described gas sampler, outlet chamber below is provided with gas outlet (24), described gas outlet is connected with aspiration pump, and described belt activated filter film film is between inlet chamber and outlet chamber; Described inlet chamber and outlet chamber docking, the gap (25) that allows belt activated filter film film pass is left in centre;
Described filter membrane delivery unit at least comprises two wheel discs, is respectively initiatively wheel disc and driven wheel disc, and one end of described belt activated filter film film is wound on driven wheel disc, and the other end of described belt activated filter film film is wound on active wheel disc; The equidirectional synchronous rotation of described active wheel disc and driven wheel disc drives belt activated filter film film to pass through successively sampling cavity and XRF detecting device, and make belt filtering membrane by driven wheel disc to driving wheel travelling expenses around;
Aspiration pump in described gas sampler, the detector switch of XRF detecting device and for driving the initiatively motor of wheel disc to be all connected with control module;
Described XRF detecting device (40) carries out data communication by wireless communication unit (90) and remote terminal.
2. the on-line measuring device of content of beary metal in flue gas according to claim 1, is characterized in that, the sampling cavity below of described gas sampler is provided with coding unit (60), and described coding unit is controlled by control module.
3. the on-line measuring device of content of beary metal in flue gas according to claim 1 and 2, it is characterized in that, on described belt activated filter film film, all scribble active material or filter membrane uniformly-spaced scribbles active material on region, the spacing distance scribbling between the adjacent filter membrane region of active material is the spacing between XRF detecting device and described sampling cavity.
4. the on-line measuring device of content of beary metal in flue gas according to claim 3, is characterized in that, described active material layer is in organic high molecular layer, glass fibre membrane, quartz film and one or more of metal-organic framework materials film.
5. the on-line measuring device of content of beary metal in flue gas according to claim 4, is characterized in that, is also provided with multiple runners for fixing belt activated filter film film on described filter membrane delivery unit.
6. the on-line measuring device of content of beary metal in flue gas according to claim 5, it is characterized in that, on the sampling conduit of described gas sampler, be provided with heating unit and be provided with temperature sensor for detection of sampling conduit in flue-gas temperature, described heating unit is controlled by control module.
7. the online test method of content of beary metal in a flue gas, it is characterized in that, the on-line measuring device of content of beary metal in flue gas described in employing claim 3-6 any one, gas in gas sampler collecting flue, utilize the aspiration pump work in gas sampler, make flue gas pass belt active filter film, the heavy metal particles in flue gas and heavy metal flue gas are adsorbed and are enriched on belt active filter film; When XRF detecting device detects that the belt active filter film that contains heavy metal element is through out-of-date, control module sends steering order and stops machine operation, make filter membrane delivery unit stop transmitting, XRF detecting device starts the heavy metal on belt active filter film to carry out determination and analysis, and analysis result XRF detecting device being obtained by wireless communication unit transfers to remote terminal.
8. the online test method of content of beary metal in flue gas according to claim 7, it is characterized in that, when heavy metal particles in described flue gas and heavy metal flue gas are adsorbed and are enriched on belt active filter film, described coding unit carries out coding to belt active filter film, and described coding information comprises coding time and sampling duration.
9. the online test method of content of beary metal in flue gas according to claim 8, is characterized in that, each working time of aspiration pump in described gas sampler is identical with detection and the analysis time of described XRF detecting device.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104020090A (en) * | 2014-06-06 | 2014-09-03 | 北京中晟泰科环境科技发展有限责任公司 | Double-ring-groove driving component and particulate monitoring instrument with same |
| CN104483339A (en) * | 2014-12-30 | 2015-04-01 | 钢研纳克检测技术有限公司 | On-line analyzer and analysis method of mercury in flue gas based on wet enrichment |
| CN104964903A (en) * | 2015-06-12 | 2015-10-07 | 南京航空航天大学 | High altitude airborne X fluorescence real-time analyzer |
| CN105388250A (en) * | 2014-08-29 | 2016-03-09 | 弗兰克公司 | Wireless combustion/efficiency analyzer |
| CN105866153A (en) * | 2016-03-31 | 2016-08-17 | 北方工业大学 | Atmosphere heavy metal detection system |
| CN107376488A (en) * | 2017-08-15 | 2017-11-24 | 江苏省环境监测中心 | Suitable for the filtration in-situ system of the water sample containing heavy metal |
| CN107941718A (en) * | 2017-11-25 | 2018-04-20 | 宁波亿诺维信息技术有限公司 | flue gas pollutant environment monitoring system |
| CN108489775A (en) * | 2018-05-14 | 2018-09-04 | 中国计量大学 | A kind of aerosol automatic collection and Raman spectrum detecting device |
| CN109187114A (en) * | 2018-09-29 | 2019-01-11 | 国电环境保护研究院 | Coal-fired plant flue gas particle sampling system and the method for sampling based on the system |
| CN110068589A (en) * | 2019-04-28 | 2019-07-30 | 天津迪沃特生物电子科技有限公司 | The device and method of heavy metal in a kind of on-line analysis water |
| CN116223402A (en) * | 2023-04-24 | 2023-06-06 | 雅安市汉源生态环境监测站 | Detection device for phosphorus pentoxide in air |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104020090A (en) * | 2014-06-06 | 2014-09-03 | 北京中晟泰科环境科技发展有限责任公司 | Double-ring-groove driving component and particulate monitoring instrument with same |
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| CN104483339B (en) * | 2014-12-30 | 2017-03-22 | 钢研纳克检测技术有限公司 | On-line analyzer and analysis method of mercury in flue gas based on wet enrichment |
| CN104483339A (en) * | 2014-12-30 | 2015-04-01 | 钢研纳克检测技术有限公司 | On-line analyzer and analysis method of mercury in flue gas based on wet enrichment |
| CN104964903A (en) * | 2015-06-12 | 2015-10-07 | 南京航空航天大学 | High altitude airborne X fluorescence real-time analyzer |
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| CN105866153A (en) * | 2016-03-31 | 2016-08-17 | 北方工业大学 | Atmosphere heavy metal detection system |
| CN107376488A (en) * | 2017-08-15 | 2017-11-24 | 江苏省环境监测中心 | Suitable for the filtration in-situ system of the water sample containing heavy metal |
| CN107941718A (en) * | 2017-11-25 | 2018-04-20 | 宁波亿诺维信息技术有限公司 | flue gas pollutant environment monitoring system |
| CN108489775A (en) * | 2018-05-14 | 2018-09-04 | 中国计量大学 | A kind of aerosol automatic collection and Raman spectrum detecting device |
| CN109187114A (en) * | 2018-09-29 | 2019-01-11 | 国电环境保护研究院 | Coal-fired plant flue gas particle sampling system and the method for sampling based on the system |
| CN109187114B (en) * | 2018-09-29 | 2023-07-07 | 国电环境保护研究院 | Coal-fired power plant flue gas particulate matter sampling system and sampling method based on same |
| CN110068589A (en) * | 2019-04-28 | 2019-07-30 | 天津迪沃特生物电子科技有限公司 | The device and method of heavy metal in a kind of on-line analysis water |
| CN116223402A (en) * | 2023-04-24 | 2023-06-06 | 雅安市汉源生态环境监测站 | Detection device for phosphorus pentoxide in air |
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Application publication date: 20140528 |