CN205449878U - Plain quick detection device of arsenogen in natural gas - Google Patents
Plain quick detection device of arsenogen in natural gas Download PDFInfo
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- CN205449878U CN205449878U CN201620159296.6U CN201620159296U CN205449878U CN 205449878 U CN205449878 U CN 205449878U CN 201620159296 U CN201620159296 U CN 201620159296U CN 205449878 U CN205449878 U CN 205449878U
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- gas
- bogey
- natural gas
- fast detecting
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Abstract
The utility model discloses a plain quick detection device of arsenogen in natural gas, include: gas bears the device, and it is used for bearing the natural gas of treating the detection, the absorption liquid bears the device, and it includes one or more adsorption equipment, adsorption equipment has air inlet and gas outlet, a plurality of adsorption equipment pass through the series connection, the adsorption equipment intussuseption is filled with the adsorbent, and power device, its connect in gas bear the device with the absorption liquid bears between the air inlet of device, power device will the natural air pump that gas bore the weight of in the device is gone into the absorption liquid supplies in bearing the device the adsorbent adsorbs. The utility model discloses a plain quick detection device of arsenogen in natural gas is simple, and the adsorbent of use is cheap, can satisfy on -the -spot quick processing and the detection of the natural gas, and portable, but lower cost large scale investment is used.
Description
Technical field
This utility model relates to gas detection technology field, particularly to the device for fast detecting of arsenic element in a kind of natural gas.
Background technology
In natural gas, volatile arsenic compound can substantially shorten the service life of natural gas processing process recycling catalyst, causes natural gas line to block, when utilizing constitutes a threat to environmental and human health impacts.As the significant concern part of gas product quality testing, natural gas arsenic content detection technique urgently breaks through.Putting the occurrence status of arsenic element in natural gas in order, the trace and the toxicity that consider arsenic in natural gas are the difficulties that the technology needs emphasis to break through.Meanwhile, the selection of the cost of selected adsorbent, the ease of experimental provision and experiment test instrument is also that can the technology be applied to industrial important consideration.
At present, the fewest about the detection technique research of arsenic in natural gas, domestic employing geogas survey method is studied more for the arsenic element in soil, nineteen ninety-five thanks to brocade academician and proposes Earth Gas method and think that low-density earth gas measurement can be used to find is large-scale abnormal for large-scale strategic prospecting activity, Wang Xueqiu, Xie Xuejin is at China northern Shandong delineation large area ground vapour Au, As, the element anomalies such as Hg, Liu Yinghan etc. have carried out research to the adsorbing material of trapping geogas substance and have found that the foam plastics containing activated carbon can preferably capture the trace materials from underground mineral resources, the pollution that Lu Yin fiber crops etc. may cause when pointing out the gas collection material purity of ground vapour and analyze the reagent purity used in test and gas production operation in the wild with lab analysis is the key factor affecting this Technique Popularizing.
The method that foreign scholar E.M.Krupp used silica gel to soak silver nitrate in 2007 removes the arsenic in natural gas, the absorption pipe range 7 centimetres that experiment uses, outer dia 6 millimeters, the inside filling gel impregnates the solid AgNO that 2% hydrargyrum and nitrate solution are prepared in distilled water3.After sampling, plastic plug is used to seal the two ends of adsorption tube.Carrying out solution absorption, trapping solution is the silver nitrate solution of a bottle 200 milliliters 2%, is connected in the middle of sampling gas circuit, and gas passes through in sampling path with the speed of 2 liters/min.
Summary, in domestic natural gas, the detection of arsenic is blank, and geogas survey commercial measurement scope is little, is a kind of static detection, it is impossible to the natural gas for dynamically flowing measures.External methods and results is preferable, but experimental apparatus is the most complicated, is unfavorable for the easy testing process of natural gas on-site.
Utility model content
Technical problem to be solved in the utility model is to provide the device for fast detecting of arsenic element in a kind of natural gas, which overcomes the disadvantages mentioned above of prior art.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
The device for fast detecting of arsenic element in a kind of natural gas, including: gas bogey, it is for carrying natural gas to be detected；Absorbing liquid bogey, it includes that one or more adsorbent equipment, described adsorbent equipment have air inlet and gas outlet, and the plurality of adsorbent equipment, by being connected in series, is filled with adsorbent in described adsorbent equipment；And power set, it is connected between the air inlet of described gas bogey and described absorbing liquid bogey, and the natural gas in described gas bogey is pumped in described absorbing liquid bogey for described adsorbent by described power set.
Preferably, in technique scheme, described device for fast detecting also includes: retracting device, and described retracting device is connected with described gas outlet.
Preferably, in technique scheme, described device for fast detecting also includes: neutralizer bogey, described neutralizer bogey has air inlet end and outlet side, described air inlet end is connected with the gas outlet of described absorbing liquid bogey, described outlet side is connected with described gas bogey, is filled with neutralizer in described neutralizer bogey.
Preferably, in technique scheme, in described absorbing liquid bogey, it is provided with quartz filter.
Preferably, in technique scheme, described gas bogey is airbag, and described retracting device is airbag.
Preferably, in technique scheme, described gas bogey is gas collecting bottle.
Preferably, in technique scheme, the bottom of described gas bogey is provided with heater.
Preferably, in technique scheme, described heater is heating in water bath.
Preferably, in technique scheme, described adsorbent is silver nitrate.
Preferably, in technique scheme, described adsorbent is concentrated nitric acid, and described neutralizer is NaOH.
This utility model technique scheme, has the advantages that
This detection chooses silver nitrate solution and concentrated nitric acid solution as the trapping agent (adsorbent) of arsenic element in natural gas.Silver nitrate solution contains a large amount of silver ion, thus has strong oxidizing property, and meanwhile, it can carry out complexation reaction with coordination compound trimethyl arsine, TMAO may finally be melted into AsO4 3-form；Though the oxidisability of nitric acid is weak compared with silver nitrate, but also can reach same effect.
In domestic natural gas, the detection of arsenic is blank, and geogas survey commercial measurement scope is little, is a kind of static detection, it is impossible to the natural gas for dynamically flowing measures.And external methods experiment instrument is the most complicated, it is unfavorable for the easy testing process of natural gas on-site.
Device of the present utility model is simple, and the trapping agent (adsorbent) of use is cheap, it is possible to meets natural gas on-site and quickly processes and detect, and is easy to carry, and relatively low cost can use in large scale investment.
This utility model is by the apolegamy of arsenic absorbing liquid, the multistage and cyclic absorption of arsenic and subsequent instrumentation method of testing in natural gas, choose concentrated nitric acid solution and silver nitrate solution as absorbent solution, plasma mass spectrometry is used to detect, confirm the feasibility that arsenic is adsorbed by concentrated nitric acid solution and nitric acid money kind solution, the maximum absorption efficiency obtaining silver nitrate solution can reach 98.7%, meansigma methods is 80.31%, and the absorption efficiency of concentrated nitric acid solution can reach 45%.
Accompanying drawing explanation
Fig. 1 is multistage absorption liquid bogey schematic diagram of the present utility model.
Fig. 2 is circulating device schematic diagram of the present utility model.
Fig. 3 is airbag multiple stage circulation device schematic diagram of the present utility model.
Detailed description of the invention
Below specific embodiment of the utility model is described in detail, in order to be further appreciated by this utility model.
Embodiment 1
Fig. 1 is multistage absorption liquid bogey schematic diagram of the present utility model.As shown in the figure:
The device for fast detecting of arsenic element in a kind of natural gas, including: gas bogey 1, absorbing liquid bogey 2, power set 4 and retracting device (not shown).
Gas bogey 1 is for carrying natural gas to be detected.This gas bogey 1 is preferably airbag, but this utility model is not limited thereto.
Absorbing liquid bogey 2 includes one or more adsorbent equipment.The present embodiment is preferably two, but its number is not limited with the present embodiment, and the thinkable number of any those skilled in the art all falls within protection domain of the present utility model.This adsorbent equipment has air inlet 21 and gas outlet 22, and two adsorbent equipments of the present embodiment are connected by series connection head and the tail.It is filled with adsorbent in adsorbent equipment, comes from the arsenic element in the natural gas of gas bogey 1 for absorption.Adsorption liquid is preferably silver nitrate or concentrated nitric acid.Adsorbent equipment is preferably with the absorption bottle of quartz filter.
Power set 4 are connected between above-mentioned gas bogey 1 and absorbing liquid bogey 2, are specifically connected between the air inlet 21 of gas bogey 1 and absorbing liquid bogey 2.Thus power is provided, supply adsorbent in the natural gas in gas bogey 1 is pumped into absorbing liquid bogey 2.These power set are preferably air pump.
Retracting device, it is connected with the gas outlet 22 of above-mentioned absorbing liquid bogey 2, is used for receiving tail gas.This retracting device is preferably airbag, but this utility model is not so limited.
The present embodiment is the arsenic element coming in adsorbed gas with liquid, consider the bogey of the bogey of gas, power set and absorbent solution, devise above-described embodiment, in order to improve the absorbing liquid absorption efficiency to gas standard specimen, avoid the waste of gas standard specimen, choosing the absorption bottle with quartz filter and replace volumetric flask, gas standard specimen carries out secondary absorption, those skilled in the art can carry out three grades of absorption or the absorption of more stages if desired.
Embodiment 2
Fig. 2 is circulating device schematic diagram of the present utility model.As shown in the figure:
The device for fast detecting of arsenic element in a kind of natural gas, including: gas bogey 1, absorbing liquid bogey 2, power set 4 and neutralizer bogey 5.
Gas bogey 1 is for carrying natural gas to be detected.This gas bogey 1 is preferably gas collecting bottle, but this utility model is not limited thereto.It is highly preferred that embodiment 2 of the present utility model uses water-bath to heat gas collecting bottle.
Absorbing liquid bogey 2 includes one or more adsorbent equipment.This adsorbent equipment has air inlet 21 and gas outlet 22, the adsorbent equipment of the present embodiment 2 is diagrammatically only by an adsorbent equipment, but this utility model is not limited thereto, those skilled in the art can select multiple adsorbent equipment as required, and connected by series connection head and the tail thus carry out multi-stage absorption.It is filled with adsorbent in adsorbent equipment, comes from the arsenic element in the natural gas of gas bogey 1 for absorption.Adsorption liquid is preferably silver nitrate or concentrated nitric acid.Adsorbent equipment is preferably with the absorption bottle of quartz filter.
Power set 4 are connected between above-mentioned gas bogey 1 and absorbing liquid bogey 2, are specifically connected between the air inlet 21 of gas bogey 1 and absorbing liquid bogey 2.Thus power is provided, supply adsorbent in the natural gas in gas bogey 1 is pumped into absorbing liquid bogey 2.These power set are preferably air pump.
Neutralizer bogey 5, it has air inlet end and outlet side, is filled with neutralizer in this neutralizer bogey 5.Air inlet end is connected with the gas outlet 22 of absorbing liquid bogey 2, the natural gas after receiving absorption.Outlet side is connected with gas bogey 1, is circulated absorption for the natural gas in neutralizer and after absorption is directed into gas bogey 1 again.Above-mentioned adsorption liquid is preferably silver nitrate or concentrated nitric acid.Above-mentioned neutralizer bogey 5 is preferably the triangular flask of band stopper.Neutralizer is preferably alkaline solution, more preferably NaOH.
Above-described embodiment 2 of the present utility model is on the basis of embodiment 1, again device is optimized: the exhaust emissions conduit connected the gas outlet in embodiment 1 is connected back in gas collecting bottle, make device become circulating device, thus improve the recycling to standard gas sample；Airbag is replaced, it is to avoid gas leak phenomenon with the transparent gas collecting bottle of large volume, and the convenient degree of volatility observing trimethyl arsine；It addition, gas collecting bottle is heated in experimentation, make the most fully volatilization in bottle of trimethyl arsine.
Embodiment 3
The device for fast detecting of arsenic element in a kind of natural gas, including: gas bogey 1, absorbing liquid bogey 2, power set 4 and retracting device 3.
Gas bogey 1 is for carrying natural gas to be detected.This gas bogey 1 is preferably airbag, but this utility model is not limited thereto.
Absorbing liquid bogey 2 includes one or more adsorbent equipment.The present embodiment is preferably three, but its number is not limited with the present embodiment, and the thinkable number of any those skilled in the art all falls within protection domain of the present utility model.This adsorbent equipment has air inlet 21 and gas outlet 22, and three adsorbent equipments of the present embodiment are connected by series connection head and the tail.It is filled with adsorbent in adsorbent equipment, comes from the arsenic element in the natural gas of gas bogey 1 for absorption.Adsorption liquid is preferably silver nitrate or concentrated nitric acid.Adsorbent equipment is preferably with the absorption bottle of quartz filter.
Power set 4 are connected between above-mentioned gas bogey 1 and absorbing liquid bogey 2, are specifically connected between the air inlet 21 of gas bogey 1 and absorbing liquid bogey 2.Thus power is provided, supply adsorbent in the natural gas in gas bogey 1 is pumped into absorbing liquid bogey 2.These power set are preferably air pump.
Retracting device 3, it is connected with the gas outlet 22 of above-mentioned absorbing liquid bogey 2, is used for receiving tail gas.This retracting device is preferably airbag, but this utility model is not so limited.
Embodiment 3 of the present utility model set and embodiment 1 and the advantage of embodiment 2, on this basis, the mode using two airbag series connection is designed to a kind of multiple stage circulation device, left side is the airbag filling standard specimen, right side airbag collects the residual gas after absorbing, after experiment terminates, exchange air-cuff placement, move in circles.This mode reduces the integral pressure of system, has accomplished the combination of multi-stage absorption Yu round-robin method.
In the above embodiments 1-3, concrete behaviour is as follows:
Configuration concentrated nitric acid and silver nitrate solution that concentration is 2% are appropriate, connect such as Fig. 1,2 or 3 shown device operate, adjustment flow velocity is 100ml/min, and adsorption time is about 2.5 hours.After absorption terminates, absorbent solution and blank group are diluted, be passed through plasma mass spectrometry and carry out the detection of arsenic content, calculate the quotient absorption efficiency as absorbing liquid of detected value and theoretical value.
In actual mechanical process, have studied different capacity and the impact on measuring sensitivity of the different current-carrying tolerance, finally shown to the selection such as table 1 (operating parameter of ICP-MS) of Instrument operation parameter:
Table 1
This utility model above-described embodiment is by the apolegamy of arsenic absorbing liquid, the multistage and cyclic absorption of arsenic and subsequent instrumentation method of testing in natural gas, choose concentrated nitric acid solution and silver nitrate solution as absorbent solution, plasma mass spectrometry is used to detect, confirm the feasibility that arsenic is adsorbed by concentrated nitric acid solution and nitric acid money kind solution, the maximum absorption efficiency obtaining silver nitrate solution can reach 98.7%, meansigma methods is 80.31%, and the absorption efficiency of concentrated nitric acid solution can reach 45%.
Although this utility model is open as above with embodiment; so it is not intended to limit this utility model; any those skilled in the art; without departing from spirit and scope of the present utility model; all can make various different selection and amendment, protection domain the most of the present utility model is limited by claims and equivalents thereof.
Claims (10)
1. the device for fast detecting of arsenic element in a natural gas, it is characterised in that described device for fast detecting includes:
Gas bogey (1), it is for carrying natural gas to be detected；
Absorbing liquid bogey (2), it includes one or more adsorbent equipment, described adsorbent equipment has air inlet (21) and gas outlet (22), and the plurality of adsorbent equipment, by being connected in series, is filled with adsorbent in described adsorbent equipment；And
Power set (4), it is connected between described gas bogey (1) and the air inlet (21) of described absorbing liquid bogey (2), and described power set (4) supply described adsorbent in the natural gas in described gas bogey (1) pumps into described absorbing liquid bogey (2).
The device for fast detecting of arsenic element in natural gas the most according to claim 1, it is characterized in that, described device for fast detecting also includes: retracting device (3), and described retracting device (3) is connected with described gas outlet (22).
The device for fast detecting of arsenic element in natural gas the most according to claim 1, it is characterized in that, described device for fast detecting also includes: neutralizer bogey (5), described neutralizer bogey (5) has air inlet end and outlet side, described air inlet end is connected with the gas outlet (22) of described absorbing liquid bogey (2), described outlet side is connected with described gas bogey (1), is filled with neutralizer in described neutralizer bogey (5).
4. according to the device for fast detecting of arsenic element in the natural gas described in claim 1,2 or 3, it is characterised in that be provided with quartz filter in described absorbing liquid bogey (2).
The device for fast detecting of arsenic element in natural gas the most according to claim 2, it is characterised in that described gas bogey (1) is airbag, and described retracting device (3) is airbag.
6. according to the device for fast detecting of arsenic element in the natural gas described in claim 1,2 or 3, it is characterised in that described gas bogey (1) is gas collecting bottle.
The device for fast detecting of arsenic element in natural gas the most according to claim 6, it is characterised in that the bottom of described gas bogey (1) is provided with heater (6).
The device for fast detecting of arsenic element in natural gas the most according to claim 7, it is characterised in that described heater (6) is heating in water bath.
The device for fast detecting of arsenic element in natural gas the most according to claim 1, it is characterised in that described adsorbent is silver nitrate or concentrated nitric acid.
The device for fast detecting of arsenic element in natural gas the most according to claim 3, it is characterised in that described neutralizer is NaOH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159296.6U CN205449878U (en) | 2016-03-02 | 2016-03-02 | Plain quick detection device of arsenogen in natural gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159296.6U CN205449878U (en) | 2016-03-02 | 2016-03-02 | Plain quick detection device of arsenogen in natural gas |
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| Publication Number | Publication Date |
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| CN205449878U true CN205449878U (en) | 2016-08-10 |
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| CN201620159296.6U Expired - Fee Related CN205449878U (en) | 2016-03-02 | 2016-03-02 | Plain quick detection device of arsenogen in natural gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675706A (en) * | 2016-03-02 | 2016-06-15 | 中国地质大学（北京） | Quick detecting device for arsenic element in natural gas |
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2016
- 2016-03-02 CN CN201620159296.6U patent/CN205449878U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675706A (en) * | 2016-03-02 | 2016-06-15 | 中国地质大学（北京） | Quick detecting device for arsenic element in natural gas |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20200302 |