CN102297790A - Device for collecting/sampling ammonia from atmosphere by utilizing chemical amplification and use method thereof - Google Patents
Device for collecting/sampling ammonia from atmosphere by utilizing chemical amplification and use method thereof Download PDFInfo
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- CN102297790A CN102297790A CN 201110125200 CN201110125200A CN102297790A CN 102297790 A CN102297790 A CN 102297790A CN 201110125200 CN201110125200 CN 201110125200 CN 201110125200 A CN201110125200 A CN 201110125200A CN 102297790 A CN102297790 A CN 102297790A
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Abstract
The invention relates to a device for collecting/sampling ammonia from atmosphere by utilizing chemical amplification and a use method thereof. The device comprises a grain-separating film, wherein an input end of the grain-separating film is connected to a large air flow; an output end of the grain-separating film is connected to an air input end of a capturing separator; a liquid input end of the capturing separator is connected to a bottle filled with absorption liquid through a first peristaltic pump; an air output end of the capturing separator is connected to an air pump through a flow controller; a liquid output end of the capturing separator is connected to one end of a first tee joint through a second peristaltic pump; the other two ends of the first tee joint are respectively connected to a small air flow and a first end of a second tee joint; a second end of the second tee joint is connected to a bottle filled with NaOH solution through a third peristaltic pump; a third end of the second tee joint is connected to a reaction flask; a liquid waste discharging pipe is arranged at the bottom of the reaction flask; an air discharging pipe is arranged at the top of the reaction flask; and an output end of the air discharging pipe is connected to an ammonia detection analyzer. The device can be used for promoting the ammonia concentration of the air entering into the ammonia detection analyzer and promoting reliability of a detection result.
Description
Technical field
The present invention relates to a kind of gas collecting device and using method thereof,, utilize the device and the using method thereof of ammonia in the chemical amplifying method collection/collection atmosphere particularly about a kind of ammonia check and analysis instrument injection port front end that is placed on.
Background technology
Ammonia is alkaline gas unique in the atmosphere, and it influences acid deposition and global nitrogen cycle, participate in forming urban atmosphere secondary pollution ammonium sulfate and ammonium nitrate, and be the important component part of atmosphere fine particle, therefore receive much concern.The content of ammonia is lower in the atmosphere, and the standard method of China's atmospheric surveillance ammonia is nessler reagent method and ion selective electrode method, and the shortcoming of these two kinds of methods is complex operations, be difficult to realize on-line automatic observation.Cation chromatography at present also commonly used detects the content of ammonia in the atmosphere, but cation chromatography costs an arm and a leg, and drip washing, regenerated liquid water consumption are big, and the nominal time is long.Conventional online detection method (as conductance method, conversion of nitrogen oxides method) often because of the instrument detecting limit for height, have other interference species, and the actual content of ammonia is low in the atmosphere, therefore, is difficult to obtain authentic data, even can't detect.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of ammonia check and analysis instrument injection port front end that is arranged on, utilize chemical amplifying method, improve the content that enters ammonia in the interior gas of ammonia check and analysis instrument, the collection/harvester and the using method thereof of ammonia in the atmosphere of raising data reliability.
For achieving the above object, the present invention takes following technical scheme: a kind of chemistry amplifies the device of ammonia in the collection/collection atmosphere, it is characterized in that: it comprises the particulate separation film, the input end of described particulate separation film connects mass flow air, output terminal connects the gas input end that captures separation vessel, and the liquid input end of described capture separation vessel connects in the bottle that fills absorption liquid by first peristaltic pump; The gas output end of described capture separation vessel connects pneumatic pump by flow controller, the liquid output terminal of described capture separation vessel connects an end of first threeway by second peristaltic pump, the other two ends of described first threeway connect first end of low discharge zero air and second threeway respectively, second end of described second threeway connects in the bottle that fills NaOH solution, in the 3rd end coupled reaction bottle of described second threeway by the 3rd peristaltic pump; Described reaction bulb bottom is provided with the waste liquid vent pipe, and the top is provided with gas outlet pipe, and the output terminal of described gas outlet pipe connects ammonia check and analysis instrument.
Described capture separation vessel comprises spiral trap tube and bump disengagement chamber; The input end of described spiral trap tube comprises sample gas inlet and absorption liquid inlet, described sample gas inlet connects the output terminal of described particulate separation film, described absorption liquid inlet connects the described first wriggling delivery side of pump, the output terminal of described spiral trap tube is plugged in the described bump disengagement chamber, and is provided with nozzle at this end; The top of described bump disengagement chamber is provided with the air out that connects described flow controller input end, and the bottom of described bump disengagement chamber is provided with the absorption liquid outlet that connects the described second peristaltic pump input end.
The 3rd end of described second threeway is gone into pipe by a gas-liquid and is inserted in the described reaction bulb from the top middle portion of described reaction bulb, and the end that described gas-liquid is gone into pipe is positioned at the bottom of described reaction bulb, and is provided with sieve plate at this end.
Described reaction bulb periphery is enclosed with heating jacket, and described gas outlet pipe circumferentially is enclosed with thermal insulation casing.
Described capture separation vessel and reaction bulb adopt glass to make.
Above-mentioned chemistry amplifies the using method of the device of ammonia in the collection/collection atmosphere, it may further comprise the steps: 1) vapor phase ammonia is converted into the liquid phase ammonium: by the mass flow air of pneumatic pump extraction, behind particulate separation film removal particle, feed and capture in the separation vessel, capture separation vessel by the first peristaltic pump pumps absorption liquid, absorption liquid absorbs ammonia in the spiral trap tube after, spray from nozzle with mass flow air, with separate behind the wall bump of bump disengagement chamber, flow at the bottom of the chamber, and being delivered to first threeway by second peristaltic pump, mass flow air is discharged through flow controller and pneumatic pump successively; 2) the liquid phase ammonium is converted into vapor phase ammonia: the absorption liquid that has absorbed ammonia in the mass flow air converges at first threeway place and low discharge zero air, and constantly brought in the reaction bulb: be that power carries out emptying to the waste liquid in the reaction bulb at first with low discharge zero air by low discharge zero air, be that power injects reaction bulb with NaOH solution with the 3rd peristaltic pump and low discharge zero air then, last low discharge zero air is gone into pipe by gas-liquid and is entered reaction bulb solution is carried out bubbling, and broken up by sieve plate and to be minute bubbles, ammonia in the solution is discharged from gas outlet pipe by low discharge zero air, delivers to ammonia check and analysis instrument.
The flow ratio of described mass flow air and described low discharge zero air is greater than 10.
PH 〉=12.3 of solution in the described reaction bulb.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention absorbs the ammonia water in the mass flow air back adding highly basic earlier, reaction produces ammonia, low discharge by blasting reaction bulb zero air separates ammonia and brings detecting device into solution, because mass flow air is low discharge zero more than 10 times of air, therefore, the ammonia concentration of sending into detecting device gas can be more than 10 times of sample gas concentration, and the ammonia detectability is reduced greatly.2, the present invention is owing to feed absorption liquid with mass flow air earlier, ammonia in the mass flow air is dissolved in the absorption liquid, and water-soluble little species such as oxides of nitrogen can be got rid of with air, therefore, can get rid of the interference of species such as oxides of nitrogen, improve the reliability of testing result.3, to capture the separation vessel front end be spiral pipe in the present invention, and with the mobilization dynamic of mass flow air as absorption liquid in the trap tube, mechanism is simple, arresting efficiency is high.4, the present invention captures the separation vessel rear end for clashing into disengagement chamber, flow at the bottom of the chamber behind absorption liquid in the mass flow air and the chamber wall bump, and and air separation, its separation efficiency height, the absorption liquid loss is few.5, the present invention adopts first peristaltic pump as the absorption liquid power that captures the separation vessel input end, and second peristaltic pump is as the absorption liquid power that captures the separation vessel output terminal, and the 3rd peristaltic pump is as NaOH solution power.6, reaction bulb of the present invention places heating jacket, and utilizes sieve plate that low discharge zero air is broken up to be minute bubbles, can to improve the separation efficiency of ammonia and solution.7, apparatus of the present invention critical piece is common materials, and simple in structure, assembles, keeps in repair easily, and overall expenses is low.The exploitation of the inventive method and device can increase substantially and enter ammonia concentration in the ammonia detecting device gas, and be applicable to water environment too based on atmospheric environment, therefore, can be widely used in the collection/gatherer process of ammonia.
Description of drawings
Fig. 1 is a principle of work synoptic diagram of the present invention
Fig. 2 is that the present invention captures the cyclone separator arrangement synoptic diagram
Fig. 3 is a reaction bulb structural representation of the present invention
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1, apparatus of the present invention can be divided into the two large divisions, are respectively that vapor phase ammonia is converted into liquid phase ammonium part 1 and the liquid phase ammonium is converted into vapor phase ammonia part 2.
Vapor phase ammonia is converted into liquid phase ammonium part 1 comprises particulate separation film 3, the input end of particulate separation film 3 connects mass flow air, output terminal connects the gas input end that captures separation vessel 4, the liquid input end that captures separation vessel 4 connects the output terminal of first peristaltic pump 5, and the input end of first peristaltic pump 5 connects in the bottle that fills absorption liquid 6 (absorption liquid 6 can be a water).Capture the input end of the gas output end connection traffic controller 7 of separation vessel 4, the output terminal of flow controller 7 connects pneumatic pump 8.The liquid output terminal that captures separation vessel 4 connects the input end of second peristaltic pump 9.
The liquid phase ammonium is converted into vapor phase ammonia part 2 and comprises first threeway 10 that connects second peristaltic pump, 9 output terminals, the other two ends of first threeway 10 connect first end of low discharge zero air and second threeway 11 respectively, second end of second threeway 11 connects the output terminal of the 3rd peristaltic pump 12, the input end of the 3rd peristaltic pump 12 connects in the bottle that fills NaOH solution 13, in the 3rd end coupled reaction bottle 14 of second threeway 11.Reaction bulb 14 peripheries are enclosed with heating jacket 15, reaction bulb 14 bottoms are provided with waste liquid vent pipe 16, the top is provided with gas outlet pipe 17, and gas outlet pipe 17 circumferentially is enclosed with thermal insulation casing, and the output terminal of gas outlet pipe 17 connects ammonia check and analysis instrument (not shown).
In the foregoing description, air mass flow is zero more than 10 times of air mass flow, and therefore, air mass flow is big flow, and zero air mass flow is a low discharge.
As shown in Figure 2, the material that captures separation vessel 4 is a glass, and it comprises spiral trap tube 18 and bump disengagement chamber 19.The input end of spiral trap tube 18 comprises sample gas inlet 20 and absorption liquid inlet 21, and sample gas inlet 20 connects the output terminal of particulate separation film 3, and absorption liquid inlet 21 connects the output terminal of first peristaltic pump 5.The output terminal of spiral trap tube 18 is plugged in the bump disengagement chamber 19, and is provided with nozzle 22 at this end.The top of bump disengagement chamber 19 is provided with air out 23, the input end of air out 23 connection traffic controllers 7, and the bottom of bump disengagement chamber 19 is provided with absorption liquid outlet 24, and absorption liquid outlet 24 connects the input end of second peristaltic pump 9.
As shown in Figure 3, the material of reaction bulb 14 is a glass, it comprises a cavity 25, insert a gas-liquid from cavity 25 top middle portion and go into pipe 26, gas-liquid is gone into the 3rd end that pipe 26 input ends connect second threeway 11, gas-liquid is gone into the bottom of the output terminal of pipe 26 near cavity 25, and the output terminal that gas-liquid is gone into pipe 26 is provided with sieve plate 27; Cavity 25 bottoms are provided with waste liquid vent pipe 16, and the top-side of cavity 25 is provided with gas outlet pipe 17.
The present invention utilizes ammonia solubleness in water big, ammonia can be absorbed by water fully in the atmosphere, major part is converted into the ammonium root, after adding highly basic, when pH value of solution 〉=12.3, ammonia and ammonium root ratio are greater than 1000 principle (solution temperature 25 degree Celsius) in the solution, earlier ammonia water in the atmosphere is absorbed the back and add highly basic, highly basic and the reaction of ammonium root produce ammonia, then low discharge zero air is fed in the solution, mode with bubbling is separated ammonia from solution, and brings ammonia into ammonia check and analysis instrument, realizes entering the amplification of ammonia concentration in the ammonia check and analysis instrument gas.
The using method of apparatus of the present invention is:
At first be that vapor phase ammonia is converted into liquid phase ammonium part 1, extract mass flow air with pneumatic pump 8, through feeding the capture separation vessels 4 from sample gas inlet 20 behind the particulate separation film 3 removal particles, the absorption liquid inlet 21 that captures separation vessel 4 is that power injects absorption liquid 6 with first peristaltic pump 5, absorption liquid 6 absorbs ammonia in spiral trap tube 18 after, mass flow air and absorption liquid 6 are from nozzle 22 ejections, with separate behind the wall bump of bump disengagement chamber 19, absorption liquid 6 flow at the bottom of the chamber, and be delivered to first threeway 10 from absorption liquid outlet 24 by second peristaltic pump 9, air from air out 23 through flow controller 7, pneumatic pump 8 is discharged;
Be that the liquid phase ammonium is converted into vapor phase ammonia part 2 then, the absorption liquid 6 that has absorbed ammonia in the mass flow air converges at first threeway 10 places and low discharge zero air, and is constantly brought in the reaction bulb 14 by low discharge zero air.A METHOD FOR CONTINUOUS DETERMINATION cycle can be decided to be 15min, preceding 0.5min is that power carries out emptying to the waste liquids in the reaction bulb 14 with low discharge zero air, waste liquid is discharged through waste liquid vent pipe 16 in the bottle, 1min is that power injects reaction bulb 14 with NaOH solution 13 through second threeway 11 with the 3rd peristaltic pump 12 and low discharge zero air subsequently, last 13.5min, low discharge zero air is gone into pipe 26 from gas-liquid and is entered 14 pairs of solution of reaction bulb and carry out bubbling, and broken up by sieve plate 27 and to be minute bubbles, ammonia in the solution is discharged from gas outlet pipe 17 by low discharge zero air, delivers to ammonia check and analysis instrument.
In the foregoing description, the flow ratio of mass flow air and low discharge zero air is greater than 10, so the ammonia that feeds in the ammonia check and analysis instrument gas concentrates 10 times at least, and inclusion-free.
In the foregoing description, absorption liquid 6 can be a water.
The various embodiments described above only are used to illustrate the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. a chemistry amplifies the device of ammonia in the collection/collection atmosphere, it is characterized in that: it comprises the particulate separation film, the input end of described particulate separation film connects mass flow air, output terminal connects the gas input end that captures separation vessel, and the liquid input end of described capture separation vessel connects in the bottle that fills absorption liquid by first peristaltic pump; The gas output end of described capture separation vessel connects pneumatic pump by flow controller, the liquid output terminal of described capture separation vessel connects an end of first threeway by second peristaltic pump, the other two ends of described first threeway connect first end of low discharge zero air and second threeway respectively, second end of described second threeway connects in the bottle that fills NaOH solution, in the 3rd end coupled reaction bottle of described second threeway by the 3rd peristaltic pump; Described reaction bulb bottom is provided with the waste liquid vent pipe, and the top is provided with gas outlet pipe, and the output terminal of described gas outlet pipe connects ammonia check and analysis instrument.
2. a kind of chemistry as claimed in claim 1 amplifies the device of ammonia in the collection/collection atmosphere, it is characterized in that: described capture separation vessel comprises spiral trap tube and bump disengagement chamber; The input end of described spiral trap tube comprises sample gas inlet and absorption liquid inlet, described sample gas inlet connects the output terminal of described particulate separation film, described absorption liquid inlet connects the described first wriggling delivery side of pump, the output terminal of described spiral trap tube is plugged in the described bump disengagement chamber, and is provided with nozzle at this end; The top of described bump disengagement chamber is provided with the air out that connects described flow controller input end, and the bottom of described bump disengagement chamber is provided with the absorption liquid outlet that connects the described second peristaltic pump input end.
3. a kind of chemistry as claimed in claim 1 amplifies the device of ammonia in the collection/collection atmosphere, it is characterized in that: the 3rd end of described second threeway is gone into pipe by a gas-liquid and is inserted in the described reaction bulb from the top middle portion of described reaction bulb, the end that described gas-liquid is gone into pipe is positioned at the bottom of described reaction bulb, and is provided with sieve plate at this end.
4. a kind of chemistry as claimed in claim 2 amplifies the device of ammonia in the collection/collection atmosphere, it is characterized in that: the 3rd end of described second threeway is gone into pipe by a gas-liquid and is inserted in the described reaction bulb from the top middle portion of described reaction bulb, the end that described gas-liquid is gone into pipe is positioned at the bottom of described reaction bulb, and is provided with sieve plate at this end.
5. as the device of ammonia in claim 1 or 2 or the 3 or 4 described a kind of chemistry amplification collection/collection atmosphere, it is characterized in that: described reaction bulb periphery is enclosed with heating jacket, and described gas outlet pipe circumferentially is enclosed with thermal insulation casing.
6. as the device of ammonia in claim 1 or 2 or the 3 or 4 described a kind of chemistry amplification collection/collection atmosphere, it is characterized in that: described capture separation vessel and reaction bulb adopt glass to make.
7. a kind of chemistry as claimed in claim 5 amplifies the device of ammonia in the collection/collection atmosphere, it is characterized in that: described capture separation vessel and reaction bulb adopt glass to make.
8. one kind as claim 1～7 using method that chemistry amplifies the device of ammonia in the collection/collection atmosphere as described in each, and it may further comprise the steps:
1) vapor phase ammonia is converted into the liquid phase ammonium: by the mass flow air of pneumatic pump extraction, behind particulate separation film removal particle, feed and capture in the separation vessel, capture separation vessel by the first peristaltic pump pumps absorption liquid, absorption liquid sprays from nozzle with mass flow air absorb ammonia in the spiral trap tube after, with separate behind the wall bump of bump disengagement chamber, flow at the bottom of the chamber, and be delivered to first threeway by second peristaltic pump, mass flow air is discharged through flow controller and pneumatic pump successively;
2) the liquid phase ammonium is converted into vapor phase ammonia: the absorption liquid that has absorbed ammonia in the mass flow air converges at first threeway place and low discharge zero air, and constantly brought in the reaction bulb: be that power carries out emptying to the waste liquid in the reaction bulb at first with low discharge zero air by low discharge zero air, be that power injects reaction bulb with NaOH solution with the 3rd peristaltic pump and low discharge zero air then, last low discharge zero air is gone into pipe by gas-liquid and is entered reaction bulb solution is carried out bubbling, and broken up by sieve plate and to be minute bubbles, ammonia in the solution is discharged from gas outlet pipe by low discharge zero air, delivers to ammonia check and analysis instrument.
9. the using method that a kind of chemistry as claimed in claim 8 amplifies the device of ammonia in the collection/collection atmosphere is characterized in that: the flow ratio of described mass flow air and described low discharge zero air is greater than 10.
10. a kind of as claimed in claim 8 or 9 chemistry amplifies the using method of the device of ammonia in the collection/collection atmosphere, it is characterized in that: pH 〉=12.3 of solution in the described reaction bulb.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110125200 CN102297790B (en) | 2011-05-16 | 2011-05-16 | Device for collecting/sampling ammonia from atmosphere by utilizing chemical amplification and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110125200 CN102297790B (en) | 2011-05-16 | 2011-05-16 | Device for collecting/sampling ammonia from atmosphere by utilizing chemical amplification and use method thereof |
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| CN102297790A true CN102297790A (en) | 2011-12-28 |
| CN102297790B CN102297790B (en) | 2013-03-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458869A (en) * | 2014-11-10 | 2015-03-25 | 深圳泽峰环保技术有限公司 | Online ammonia escape monitoring and analyzing method and online ammonia escape monitoring and analyzing instrument |
| CN104986745A (en) * | 2015-06-23 | 2015-10-21 | 暨南大学 | Gaseous nitrous acid generating device and technology thereof |
| CN105004761A (en) * | 2015-06-26 | 2015-10-28 | 华电电力科学研究院 | Denitration system escaping ammonia on-line continuous monitoring device and method |
| CN105277396A (en) * | 2014-07-10 | 2016-01-27 | 新疆科力新技术发展有限公司 | Portable rapid sampling device for samples of large-tank gas and flue gas in oil field |
| CN106596439A (en) * | 2017-01-13 | 2017-04-26 | 暨南大学 | Apparatus and method for simultaneously measuring nitrous acid, ozone and nitrogen dioxide in air |
| CN108303496A (en) * | 2018-01-17 | 2018-07-20 | 中国地质大学（武汉） | A kind of environmental protection Detection of Air Quality equipment |
| CN113813762A (en) * | 2021-11-24 | 2021-12-21 | 北京关键要素科技有限公司 | Carbon element trapping device |
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| US6090267A (en) * | 1998-07-17 | 2000-07-18 | Timberline Instruments, Inc. | Methods and apparatus for quantitative analysis of a sample |
| CN101059465A (en) * | 2007-06-12 | 2007-10-24 | 北京大学 | Ammonia test method and device |
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2011
- 2011-05-16 CN CN 201110125200 patent/CN102297790B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090267A (en) * | 1998-07-17 | 2000-07-18 | Timberline Instruments, Inc. | Methods and apparatus for quantitative analysis of a sample |
| CN101059465A (en) * | 2007-06-12 | 2007-10-24 | 北京大学 | Ammonia test method and device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277396A (en) * | 2014-07-10 | 2016-01-27 | 新疆科力新技术发展有限公司 | Portable rapid sampling device for samples of large-tank gas and flue gas in oil field |
| CN104458869A (en) * | 2014-11-10 | 2015-03-25 | 深圳泽峰环保技术有限公司 | Online ammonia escape monitoring and analyzing method and online ammonia escape monitoring and analyzing instrument |
| CN104986745A (en) * | 2015-06-23 | 2015-10-21 | 暨南大学 | Gaseous nitrous acid generating device and technology thereof |
| CN105004761A (en) * | 2015-06-26 | 2015-10-28 | 华电电力科学研究院 | Denitration system escaping ammonia on-line continuous monitoring device and method |
| CN106596439A (en) * | 2017-01-13 | 2017-04-26 | 暨南大学 | Apparatus and method for simultaneously measuring nitrous acid, ozone and nitrogen dioxide in air |
| CN106596439B (en) * | 2017-01-13 | 2023-08-18 | 暨南大学 | Equipment and method for simultaneously measuring nitrous acid, ozone and nitrogen dioxide in air |
| CN108303496A (en) * | 2018-01-17 | 2018-07-20 | 中国地质大学（武汉） | A kind of environmental protection Detection of Air Quality equipment |
| CN113813762A (en) * | 2021-11-24 | 2021-12-21 | 北京关键要素科技有限公司 | Carbon element trapping device |
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| CN102297790B (en) | 2013-03-20 |
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