CN203981592U - A reaction device for measuring the concentration of nitrogen oxides by chemiluminescence - Google Patents
A reaction device for measuring the concentration of nitrogen oxides by chemiluminescence Download PDFInfo
- Publication number
- CN203981592U CN203981592U CN201420366377.4U CN201420366377U CN203981592U CN 203981592 U CN203981592 U CN 203981592U CN 201420366377 U CN201420366377 U CN 201420366377U CN 203981592 U CN203981592 U CN 203981592U
- Authority
- CN
- China
- Prior art keywords
- reaction chamber
- air intake
- shell
- reaction
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 50
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 24
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000005281 excited state Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229960003753 nitric oxide Drugs 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000019391 nitrogen oxide Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
A reaction apparatus for measuring the concentration of nitrogen oxide by chemiluminiscence is composed of photoelectric detector, casing, reaction chamber, gas outlet, composite gas inlet tube, and O3The gas inlet, NO inlet, heating rod and pressure detector, and features the cylindrical casing, the inside reaction chamber, the heating rod around the reaction chamber, the composite gas inlet pipe and O connected to one end of the casing3The gas inlet, NO air inlet, shell other end connect photoelectric detector, there are gas outlets and pressure detectors in the photoelectric detector and shell junction. Compared with the prior art, the utility model has NO and O3The NO is in the central position, O, through a composite air inlet pipe and is controlled to be introduced into the reaction chamber according to the accurate flow rate of 1: 103Uniformly distributed around the circumference, and the design of the structure fully ensures NO sample gas and O3Can rapidly and efficiently generate NO in excited state by chemical reaction in the reaction chamber2 *The sensitivity of the instrument is effectively improved. The method is suitable for real-time online monitoring of the concentration of the nitrogen oxide in the atmosphere.
Description
Technical field
The utility model relates to a kind of gas reaction device, is a kind of gas reaction device of surveying nitrous oxides concentration for chemoluminescence method.Be applied in environmental protection industry (epi), the concentration of the oxides of nitrogen in atmosphere is carried out to real time on-line monitoring.
Background technology
At present, in similar chemoluminescence method nitrogen-oxide analyzer,, the factor of impact analysis instrument detection sensitivity is a lot, reaction chamber temperature, reaction chamber pressure, O
3concentration, O
3with NO sample airshed etc., wherein O
3cmpletely whether be directly connected to NO with NO sample airshed reacts.Traditional O
3can not ensure NO molecule and O with NO sample gas mixing arrangement majority
3molecule comprehensively rapidly efficient chemical reaction generates NO
2 *thereby, the sensitivity of impact analysis instrument and detectability.
Summary of the invention
In order to overcome NO molecule and O
3molecule comprehensively rapidly efficient chemical reaction generates NO
2 *phenomenon, the purpose of this utility model be design a kind of gas reaction device for chemoluminescence method, can accurately control O by composite air intake tubular construction
3with NO sample airshed and blending ratio.
The technical solution of the utility model is that a kind of reaction unit for chemoluminescence method survey nitrous oxides concentration is by photoelectric detector (1), shell (2), reaction chamber (3), gas outlet (4), composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), heating rod (8), pressure detector (9) composition, shell (2) is cylindrical shape, inside is reaction chamber (3), reaction chamber (3) is provided with heating rod (8) around, and shell (2) one end connects composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), shell (2) another end connects photoelectric detector (1), is provided with gas outlet (4) and pressure detector (9) at photoelectric detector (1) and shell connecting portion.
NO and O under uniform temperature certain pressure condition
3fully mix generation chemical reaction with certain proportion at reaction chamber, photoelectric detector detects the photon number producing and then calculates NO
xconcentration.
A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method as above, NO air intake opening (7) and O
3there is chemical reaction at reaction chamber (3) by composite air intake pipe (5) in air intake opening (6), the photon number of generation is detected and calculated by photoelectric detector (1), thereby records NO according to a certain percentage
xconcentration.
A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method as above, under uniform temperature certain pressure condition, NO sample gas and O
3respectively by NO air intake opening (7) and O
3air intake opening (6) enters reaction chamber (3) with the ratio of 1: 10, and then guarantees that NO is able to abundant reaction.
The beneficial effects of the utility model are effectively to have ensured NO sample gas and O
3flow control, simultaneously can ensure NO molecule and O
3molecule is comprehensive NO of chemical reaction generation efficiently rapidly in reaction chamber
2 *.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is a kind of external structure figure that surveys the reaction unit of nitrous oxides concentration for chemoluminescence method of the utility model
Fig. 2 is a kind of internal structural map of surveying the reaction unit of nitrous oxides concentration for chemoluminescence method of the utility model
Fig. 3 is a kind of composite air intake pipe organigram of surveying the reaction unit of nitrous oxides concentration for chemoluminescence method of the utility model
1-photoelectric detection part in figure, 2-shell, 3-reaction chamber, 4-gas outlet, 5-composite air intake pipe, 6-O
3air intake opening, 7-NO air intake opening, 8-heating rod, 9-pressure detector
Embodiment
As seen from Figure 1, a kind of reaction unit for chemoluminescence method survey nitrous oxides concentration is by photoelectric detector (1), shell (2), reaction chamber (3), gas outlet (4), composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), heating rod (8), pressure detector (9) composition, shell (2) is cylindrical shape, inside is reaction chamber (3), reaction chamber (3) is provided with heating rod (8) around, and shell (2) one end connects composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), shell (2) another end connects photoelectric detector (1), is provided with gas outlet (4) and pressure detector (9) at photoelectric detector (1) and shell connecting portion.
Measuring the device of nitrous oxides concentration for chemoluminescence method, the factors such as pressure, temperature, chamber volume and the gas flow ratio of chemiluminescence intensity and reaction chamber are relevant.In order to obtain stable luminous intensity, control the gas flow of reaction chamber (3) and the pressure of pressure detector (5) control reaction chamber (3) by composite air intake pipe (7), take heating rod (8) to carry out thermostatic control to reduce temperature impact to whole reaction air chamber simultaneously.Certain when reaction chamber temperature, gas flow is certain, and when the NO of reaction fully reacts with ozone, the NO concentration in sample gas is directly proportional to chemiluminescence intensity.
Composite air intake pipe (5) is by O
3air intake opening (6) and NO air intake opening (7) composition.O
3enter into 10 cylindrical holes that compound inlet pipe (5) is evenly distributed to diameter and is 2mm, NO is entered into and is prolonged the cylindrical hole that the diameter of axis direction is 2mm by NO air intake opening (7), and this structure has ensured O
3with the blending ratio of NO sample gas be 10: 1, and can ensure O
3can rapidly efficiently there is chemical reaction and generate at reaction chamber (3) NO of excited state with NO sample gas
2 *, the photon number producing in this process is detected by photoelectric detection part (1) and carries out follow-up signal processing, thereby obtains the concentration value of NO.
Claims (1)
1. survey a reaction unit for nitrous oxides concentration for chemoluminescence method, by photoelectric detector (1), shell (2), reaction chamber (3), gas outlet (4), composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), heating rod (8), pressure detector (9) composition, it is characterized in that, shell (2) is cylindrical shape, inside is reaction chamber (3), reaction chamber (3) is provided with heating rod (8) around, and shell (2) one end connects composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), shell (2) another end connects photoelectric detector (1), is provided with gas outlet (4) and pressure detector (9) at photoelectric detector (1) and shell connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366377.4U CN203981592U (en) | 2014-07-04 | 2014-07-04 | A reaction device for measuring the concentration of nitrogen oxides by chemiluminescence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366377.4U CN203981592U (en) | 2014-07-04 | 2014-07-04 | A reaction device for measuring the concentration of nitrogen oxides by chemiluminescence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981592U true CN203981592U (en) | 2014-12-03 |
Family
ID=51979023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420366377.4U Expired - Fee Related CN203981592U (en) | 2014-07-04 | 2014-07-04 | A reaction device for measuring the concentration of nitrogen oxides by chemiluminescence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203981592U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053437A (en) * | 2016-05-05 | 2016-10-26 | 苏州市江海通讯发展实业有限公司 | A device detecting NO through chemiluminescence and a detecting method thereof |
| CN111077139A (en) * | 2019-12-20 | 2020-04-28 | 聚光科技(杭州)股份有限公司 | A reaction chamber for chemiluminescence |
| CN111308025A (en) * | 2020-04-20 | 2020-06-19 | 淄博青禾检测科技有限公司 | Wide-range nitric oxide sensor system |
-
2014
- 2014-07-04 CN CN201420366377.4U patent/CN203981592U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053437A (en) * | 2016-05-05 | 2016-10-26 | 苏州市江海通讯发展实业有限公司 | A device detecting NO through chemiluminescence and a detecting method thereof |
| CN111077139A (en) * | 2019-12-20 | 2020-04-28 | 聚光科技(杭州)股份有限公司 | A reaction chamber for chemiluminescence |
| CN111308025A (en) * | 2020-04-20 | 2020-06-19 | 淄博青禾检测科技有限公司 | Wide-range nitric oxide sensor system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20190704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |