CN204269539U - Mercury content measurement device in a kind of coal - Google Patents
Mercury content measurement device in a kind of coal Download PDFInfo
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- CN204269539U CN204269539U CN201420697753.8U CN201420697753U CN204269539U CN 204269539 U CN204269539 U CN 204269539U CN 201420697753 U CN201420697753 U CN 201420697753U CN 204269539 U CN204269539 U CN 204269539U
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- generating furnace
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Abstract
Mercury content measurement device in a kind of coal, this device comprises flowmeter, Hg
2+converter, mercury vapor analyzer, A/D converter, industrial computer and smoke generator; Described flowmeter, Hg
2+converter and mercury vapor analyzer pass through tubes connection; Described smoke generator comprises fume generating furnace and gaskraftstoffzufuhranlage, and this gaskraftstoffzufuhranlage comprises CO gas tank, O
2gas tank, mixed air vessel and fuel nozzle; Described fuel nozzle is arranged symmetrically on the inwall of described fume generating furnace; In the bottom of fume generating furnace, The Cloud Terrace is installed, coal sample ware is set above The Cloud Terrace, in coal sample ware, be equipped with coal sample; Be respectively equipped with thermopair and through flow hole at the top of fume generating furnace, through flow hole is connected with flowmeter by conduit; The utility model has calibration, demarcates easy, and measurement range is large, and the advantages such as detection time is short, can realize the Quick Measurement of mercury content in coal, be specially adapted to the measurement of mercury content in commercial coal.
Description
Technical field
The utility model relates to mercury content measurement device in a kind of coal, belongs to coal-quality test technical field.
Background technology
China is Coal trades big country, coal import in 2013 3.27 hundred million tons, accounts for nearly 9% of whole nation year coal consumption amount.At present, from macroscopic aspect, to the control of ature of coal be still by " high quality and favourable price " principle rely on the spontaneous adjustment in market, commercial coal is bought, sell both sides often only pays close attention to the regular industrial analysis indexes that moisture, ash content, sulfur etc. affect coal price, to detrimental trace elements in coal as Hg, Pb equal size is paid close attention to less, for the coal of long-distance transportation, especially Import Coal, strengthen detecting trace element being necessary very much with supervision.Mercury is brought in quality of commercial coal supervision by " quality of commercial coal management tentative method " first that come into effect on January 1st, 2015, and day by day become tight along with environmental protection, government also will more and more pay attention to detrimental trace elements in coal.
For the detection of mercury content in coal, generally adopt chemical digesting+atomic absorption spectroscopy at present, the method needs to configure variable concentrations, different types of chemical reagent, obtain gaseous mercury atom by carrying out the steps such as chemical digesting, centrifugal, filtration to coal sample, then measure the concentration of mercury with mercury vapor analyzer.As GB GB/T 16659-2008, patent CN101839900B adopt this kind of measuring method, chemical digesting major defect is: one is need to configure variable concentrations, different types of chemical reagent, easy not, two is that Measuring Time is longer, and the measurement of a sample often needs even one day a few hours; The measurement air chamber of common mercury vapor analyzer is all regular length, like this, at timing signal, need the standard sample of the variable concentrations of configuration more than at least three kinds (more demarcation effect is better), in addition, when measuring low concentration, need to coordinate the other technologies such as amalgam enrichment to reach measurement effect toward contact, easy not.
Utility model content
For above-mentioned deficiency, the purpose of this utility model is to provide mercury content measurement device in a kind of coal, and one is shorten Measuring Time, realizes the Quick Measurement of mercury content in coal; Two is the measurement ranges increasing mercury concentration further.
The technical solution of the utility model is as follows: mercury content measurement device in a kind of coal, and this device comprises flowmeter, Hg successively
2+converter, mercury vapor analyzer, A/D converter and industrial computer; Described flowmeter, Hg
2+converter and mercury vapor analyzer are by tubes connection, and described device also comprises smoke generator, and described smoke generator comprises fume generating furnace and gaskraftstoffzufuhranlage, and this gaskraftstoffzufuhranlage comprises CO gas tank, O
2gas tank, mixed air vessel and fuel nozzle; Described fuel nozzle is arranged symmetrically on the inwall of described fume generating furnace; In the bottom of fume generating furnace, The Cloud Terrace is installed, coal sample ware is set above The Cloud Terrace, in coal sample ware, be equipped with coal sample; Be respectively equipped with thermopair and through flow hole at the top of fume generating furnace, through flow hole is connected with flowmeter by conduit; Described flowmeter is connected with industrial computer respectively by signal wire with thermopair.
The mercury vapor analyzer of described device comprises low pressure mercury lamp, the first lens, outer tube, O-ring seal, inner sleeve, the second lens, photoelectric commutator, exhaust manifolds, air chamber; Low pressure mercury lamp emergent light is received by photoelectric commutator successively after the first lens, air chamber and the second lens; Described air chamber is made up of outer tube and inner sleeve; Inner sleeve and outer tube are one side closed, opposite side hatch frame; Inner sleeve closed side cover has O-ring seal, and on closed side, have aperture connection exhaust manifolds.
In described device, connection traffic meter, Hg
2+the conduit of converter and mercury vapor analyzer adopts teflon pipe, and The Cloud Terrace is provided with height regulating rod.
The overcoat tube wall of the mercury vapor analyzer of described device has graduated scale, and inner sleeve can slidably reciprocate along the axis direction of pipe.
The utility model compared with prior art, have the following advantages and the technique effect of high-lighting: 1. the utility model is by burning coal sample, after mercury is fully separated out, carry out valence state conversion, direct measurement mercury concentration, the Quick Measurement of mercury content in coal can be realized, and do not need longer chemical digesting process consuming time.2. because mercury vapor analyzer of the present utility model have employed new structure, make air chamber length adjustable, so the measurement range of mercury concentration can be increased; In addition, when mercury vapor analyzer is calibrated, only need just can implement calibration with a kind of standard model of concentration, compared with needing more than at least three kinds variable concentrations standard models with normal calibration (demarcation), standard model quantity can be greatly reduced.Therefore, have calibrate easy, measurement range is large, and detection time is short, can realize the Quick Measurement of mercury content in coal.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the utility model measurement mechanism.
Fig. 2 is mercury vapor analyzer structural principle schematic diagram.
Fig. 3 is the A-A cut-open view of Fig. 2.
In figure: 1-fume generating furnace; 2-mixed air vessel; 3-flowmeter; 4-Hg
2+converter; 5-mercury vapor analyzer; 6-A/D converter; 7-thermopair; 8-industrial computer; 9-coal sample; 10-coal sample ware; 11-fuel nozzle; 12-through flow hole; 13-height regulating rod; 14-The Cloud Terrace; 15-CO gas tank; 16-O
2gas tank; 17-low pressure mercury lamp; 18-the first lens; 19-outer tube; 20-O-ring seal; 21-inner sleeve; 22-the second lens; 23-photoelectric commutator; 24-exhaust manifolds; 25-graduated scale; 26-air chamber.
Embodiment
In order to make the utility model be understood better, below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the structural principle schematic diagram of the utility model measurement mechanism, and this device comprises flowmeter 3, Hg successively
2+converter 4, mercury vapor analyzer 5, A/D converter 6, industrial computer 8 and smoke generator; Described flowmeter 3, Hg
2+converter 4 and mercury vapor analyzer 5 are by tubes connection, and conduit preferably adopts teflon pipe.
Smoke generator comprises fume generating furnace 1 and gaskraftstoffzufuhranlage, and this gaskraftstoffzufuhranlage comprises CO gas tank 15, O
2gas tank 16, mixed air vessel 2 and fuel nozzle 11; Described fuel nozzle is arranged symmetrically on the inwall of described fume generating furnace 1; In the bottom of fume generating furnace, The Cloud Terrace 14 is installed, coal sample ware 10 is set above The Cloud Terrace, in coal sample ware 10, be equipped with coal sample 9; Be respectively equipped with thermopair 7 and through flow hole 12 at the top of fume generating furnace, through flow hole 12 is connected with flowmeter 3 by conduit; Described flowmeter is connected with industrial computer 8 respectively by signal wire with thermopair 7.
Fume generating furnace is by CO gas tank 15 and O
2gas tank 16, for combustion gas, after mixed air vessel 2 fully mixing, is sent into the fuel nozzle 11 in fume generating furnace 1, is burnt in fume generating furnace 1.According to using the differences such as coal sample kind, particle diameter, The Cloud Terrace 14 regulates by height regulating rod 13, makes coal sample Thorough combustion, and mercury is separated out completely.Combustion product gases is through flowmeter 3, and data on flows is transferred to industrial computer 8, and flue gas is through Hg
2+converter 4, Hg
2+be converted to Hg
0, enter mercury vapor analyzer 5, measure mercury concentration.
Fig. 2 is the mercury vapor analyzer structural principle schematic diagram that the utility model provides, and Fig. 3 is the A-A cut-open view of Fig. 2.Mercury vapor analyzer 5 of the present utility model comprises low pressure mercury lamp 17, air chamber 26, exhaust manifolds 24, first lens 18, second lens 22 and photoelectric commutator 23; The light that low pressure mercury lamp 17 sends is received by photoelectric commutator 23 successively after the first lens 18, air chamber 26 and the second lens 24; Described air chamber is made up of outer tube 19 and inner sleeve 21; Inner sleeve 21 and outer tube 19 be one end close, other end opening, inner sleeve 21 slidably reciprocates along the axis direction of pipe; Have O-ring seal 20 at inner sleeve 21 blind end cover, and have aperture on Closed End, this aperture is connected with described exhaust manifolds 24.
Outer tube 19 wall has graduated scale 25, and inner sleeve 21 can slidably reciprocate along the axis direction of pipe, regulates air chamber 26 size, and air chamber 26 length can directly read from graduated scale 25.When measurement mercury concentration is lower, air chamber 26 length should tune up, and when measurement mercury concentration is larger, air chamber 26 adjustable length is little, to ensure measurement effect.
According to Bill-Lang Bo law, A=KCL, wherein, A is absorbance, and K is absorption constant, and C is mercury concentration, and L is air chamber length; When carrying out mercury vapor analyzer calibration, only need configuring a kind of mercury gas concentration, then by regulating different air chamber lengths, obtaining the absorbance of a series of correspondence, and then try to achieve absorption constant K and complete demarcation.
The concrete measuring process of the utility model is as follows:
1) first checking air tightness of pipelines is carried out;
2) mercury vapor analyzer background light intensity is measured; The light that low pressure mercury lamp 17 sends is received by photoelectric commutator 23 successively after the first lens 18, air chamber 26 and the second lens 24, then is converted to digital signal by A/D converter 6, is transferred to industrial computer 8, obtains initial beam intensity signal;
3) get coal sample (the being preferably 0.05-0.2mm) coal sample of certain particle diameter, after weighing, insert coal sample ware 10, coal sample weight data input industrial computer 8;
4) CO and O
2lighted in fume generating furnace 1, coal sample 9 is burnt and is produced flue gas, and monitoring thermopair 7 temperature, regulates CO and O
2flow, control temperature is to 815-1000 DEG C, and flue gas is successively through flowmeter 12 and Hg
2+enter mercury vapor analyzer 5 after converter 4, low pressure mercury lamp 17 emergent light is by the Hg in air chamber
0absorb, after photoelectric commutator 23, A/D converter 6, be converted to digital signal, be transferred to industrial computer 8, obtain absorbance, then in conjunction with data such as flow, coal sample weight, industrial computer 8 calculates the mercury content in coal sample.
Claims (5)
1. a mercury content measurement device in coal, this device comprises flowmeter (3), Hg successively
2+converter (4), mercury vapor analyzer (5), A/D converter (6) and industrial computer (8); Described flowmeter (3), Hg
2+converter (4) and mercury vapor analyzer (5) pass through tubes connection, it is characterized in that: described device also comprises smoke generator, this smoke generator comprises fume generating furnace (1) and gaskraftstoffzufuhranlage, and this gaskraftstoffzufuhranlage comprises CO gas tank (15), O
2gas tank (16), mixed air vessel (2) and fuel nozzle (11); Described fuel nozzle is arranged symmetrically on the inwall of described fume generating furnace (1); The Cloud Terrace (14) is installed in the bottom of fume generating furnace, coal sample ware (10) is set above The Cloud Terrace, in coal sample ware (10), be equipped with coal sample (9); Be respectively equipped with thermopair (7) and through flow hole (12) at the top of fume generating furnace, through flow hole (12) is connected with flowmeter (3) by conduit; Described flowmeter (3) is connected with industrial computer (8) respectively by signal wire with thermopair (7).
2. mercury content measurement device in a kind of coal according to claim 1, is characterized in that: described mercury vapor analyzer (5) comprises low pressure mercury lamp (17), air chamber (26), exhaust manifolds (24), the first lens (18), the second lens (22) and photoelectric commutator (23); The light that low pressure mercury lamp (17) sends is received by photoelectric commutator (23) successively after the first lens (18), air chamber (26) and the second lens (24); Described air chamber is made up of outer tube (19) and inner sleeve (21); Inner sleeve (21) and outer tube (19) be one end close, other end opening, inner sleeve (21) slidably reciprocates along the axis direction of pipe; Have O-ring seal (20) at inner sleeve (21) blind end cover, and have aperture on Closed End, this aperture is connected with described exhaust manifolds (24).
3. mercury content measurement device in a kind of coal according to claim 2, is characterized in that: described outer tube (19) wall has graduated scale (25).
4. mercury content measurement device in a kind of coal according to claim 1,2 or 3, is characterized in that: for connection traffic meter (3), Hg
2+the conduit of converter (4) and mercury vapor analyzer (5) adopts teflon pipe.
5. mercury content measurement device in a kind of coal according to claim 1,2 or 3, is characterized in that: described The Cloud Terrace (14) is provided with height regulating rod (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697753.8U CN204269539U (en) | 2014-11-19 | 2014-11-19 | Mercury content measurement device in a kind of coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420697753.8U CN204269539U (en) | 2014-11-19 | 2014-11-19 | Mercury content measurement device in a kind of coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204269539U true CN204269539U (en) | 2015-04-15 |
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ID=52804400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420697753.8U Active CN204269539U (en) | 2014-11-19 | 2014-11-19 | Mercury content measurement device in a kind of coal |
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| CN (1) | CN204269539U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330374A (en) * | 2014-11-19 | 2015-02-04 | 清华大学 | Coal mercury content measuring device |
| CN105606555A (en) * | 2016-03-10 | 2016-05-25 | 山东五洲检测有限公司 | Method for detecting content of mercury ions in water |
-
2014
- 2014-11-19 CN CN201420697753.8U patent/CN204269539U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330374A (en) * | 2014-11-19 | 2015-02-04 | 清华大学 | Coal mercury content measuring device |
| CN105606555A (en) * | 2016-03-10 | 2016-05-25 | 山东五洲检测有限公司 | Method for detecting content of mercury ions in water |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |