CN100514042C - Double room type nitrogen oxide chemiluminescence reactor - Google Patents
Double room type nitrogen oxide chemiluminescence reactor Download PDFInfo
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- CN100514042C CN100514042C CNB2005100359706A CN200510035970A CN100514042C CN 100514042 C CN100514042 C CN 100514042C CN B2005100359706 A CNB2005100359706 A CN B2005100359706A CN 200510035970 A CN200510035970 A CN 200510035970A CN 100514042 C CN100514042 C CN 100514042C
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Abstract
The present invention relates to double chamber nitrogen oxide chemiluminescence reactor in chemiluminescent nitrogen oxide monitoring instrument for automatic monitoring of environment atmosphere quality. Two chemiluminescence nitrogen oxide reaction chambers are arranged in parallel separately for the synchronous chemiluminescence reaction detection of nitrogen oxide and O3 for air and NO2 to NO conversion treated air, so as to provide the NO2 and NO concentration information synchronously. The present invention has less influence of various interference factor on measurement result, raised accuracy and long term stability.
Description
Technical field
The present invention relates to the ambient air quality automatic monitoring technical, specifically is the core component-nitrogen oxide chemiluminescence reactor of chemoluminescence method oxides of nitrogen monitor.
Background technology
The function of the chemiluminescence reactor of luminescence method oxides of nitrogen monitor is to be NO and O
3(ozone) reaction provides condition, produces the chemiluminescence information with the nitrous oxides concentration linear dependence.The mechanical-optical setup of reaction chamber and gas circuit structure have material impact to the detection sensitivity and the stability of instrument.
Same quasi-instrument on the present domestic and international market, 42C type oxides of nitrogen monitor as U.S. TE company (Thermo Envirom-entalInstrument Inc.), the M200A type oxides of nitrogen monitors of U.S. API company etc. use single chamber type chemiluminescence reactor structure all.Fig. 1 is the structural representation of existing single chamber type chemiluminescence reactor, and as shown in the figure, mainly by a cover twin-jet nozzle 8,9, well heater 15 and matrix 7 constitute.
This version is restricting the further raising of this method monitoring system accuracy in detection and long-term working stability, unfailing performance always.Tracing it to its cause, mainly is that the single reaction chamber structure can not be at instrument detecting NO
2The time detect synchronously in real time NO, can only be with the NO data that record for the previous period as NO
2The calculating reference item of measurement result, this just introduces a series of error component inevitably, influences NO
2The accuracy of measuring.In chemoluminescence method oxides of nitrogen monitor, there is several factors all can cause the variation of NO measured value, all can causes the variation of NO measured value as variations such as ozone Strength Changes, the variation of photodetector running parameter, environmental parameter (as temperature, humidity) variation, system's gas circuit parameter (as flow, pressure) variation and air components.
Summary of the invention
The objective of the invention is to problem at the prior art existence, a kind of double room type nitrogen oxide chemiluminescence reactor is provided, be on the basis of single chamber type reaction chamber, to increase a mechanical-optical setup and the identical reaction chamber of gas circuit structure, form a double room type nitrogen oxide chemiluminescence reactor of forming by two reaction chambers, realize synchronously measuring N O in real time
2And NO, eliminate the measuring error that various disturbing factors cause to greatest extent.
Shown in Fig. 2,3, chemiluminescence reactor of the present invention is made of side by side two nitrogen oxide chemiluminescence reactor A, B.
For gas fully being mixed and reacting, two nitrogen oxide chemiluminescence reactor A, B are connected with 2,3 with two cover twin-jet nozzles 8,9 respectively.
In order to increase gas circuit, prolong the tested gas reaction time, be respectively equipped with two groups of vent ports 14,16 in the both sides of the import valve 6,4 that is connected respectively with nozzle 8,3.
In order to improve luminescence efficiency, in going on foot nitrogen oxide chemiluminescence reactor A, a B, establish reflecting condenser 13,18 respectively.
In order to control temperature of reaction in real time, between two nitrogen oxide chemiluminescence reactors, be provided with well heater 15, and in matrix 7, temperature detecting controller 5 be installed, to implement the detection reaction temperature.
The present invention compared with prior art has following advantage:
1, because the present invention adopts the dual-reaction chamber structure, can use a cover heating apparatus and a sleeving temperature measure and control device, have the advantage of condition of work high conformity and compact conformation;
2, can be respectively in A of the present invention, the B reaction chamber to air and air through NO
2The sample gas of → NO conversion process carries out oxides of nitrogen and O synchronously
3Chemical reaction luminous, make NO and NO
2Synchro measure becomes possibility, eliminates the influence of various disturbing factors to measurement result to greatest extent, and the technical indicators such as measuring speed, precision and reliably working ability steady in a long-term of monitor can both be got a promotion.
3, the twin-jet nozzle of the present invention's employing, the rapid light device of reflection and the gas circuit in the outer nozzle both sides go out the feature gas circuit of interruption-forming, help improving chemiluminescence efficient.
Description of drawings
Fig. 1 is the structural representation of existing single chamber type chemiluminescence reactor;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the left view of Fig. 2.
Embodiment
Shown in Fig. 2,3, workflow of the present invention is as follows:
Air to be measured divides two-way to enter reaction chamber, and one the tunnel directly enters reaction chamber A from valve 6 through nozzle 8, and the sample gas on another road enters reaction chamber B from valve 4 through nozzle 3.Ozone from valve 10 and 1 input, enters reaction chamber A and B through outer nozzle 9 and 2 respectively.At the A reaction chamber, the O that airborne NO that inner nozzle comes and outer nozzle come
3Chemical reaction takes place, produce to such an extent that chemiluminescence intensity is directly proportional with NO concentration, chemical reaction produces to such an extent that photon is exported from glass window 12 behind emission condenser 13 optically focused, is carried out the measurement of NO by detection system.The gas of reaction chamber passes through respectively in the nozzle both sides, and the outlet 14 parallel with nozzle and 16 is by the external pump pump drainage, and 11 in the accompanying drawing and 19 is pressure gauges.Kindred circumstances is through NO
2The gas sample (airborne NO2 has converted NO to) of/NO converter conversion enters reaction chamber B from valve 4 through inner nozzle 3, with the O from outer nozzle 2 inputs
3The chemical reaction that takes place is the same with the chemical reaction that takes place in the A chamber, and different places is original NO, also to have increased the NO that exists in the air in air
2The NO that converts to.Obviously carry out chemical reaction at the whole oxides of nitrogen in the indoor chamber of B, the chemical reaction of this moment has reflected whole oxides of nitrogen (NO
X) concentration information, NO
2Measurement result be to pass through formula: NO
X-NO=NO
2Try to achieve.NO data true and accurately will directly have influence on NO as can be known
2Measuring accuracy.
Claims (2)
1, a kind of double chamber type dawn oxide chemistry luminescence-producing reaction chamber, mainly constitute by matrix, chemiluminescence reactor, it is characterized in that constituting side by side by two nitrogen oxide chemiluminescence reactors, establish reflecting condenser respectively in two nitrogen oxide chemiluminescence reactors, each nitrogen oxide chemiluminescence reactor is connected with a cover twin-jet nozzle respectively; Every cover nozzle connects an import valve, and the both sides of each import valve are provided with one group of vent port, have two groups of vent ports altogether.
2, double room type nitrogen oxide chemiluminescence reactor according to claim 1 is characterized in that being provided with well heater between two nitrogen oxide chemiluminescence reactors, and in matrix temperature detecting controller is installed, to implement the detection reaction temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100359706A CN100514042C (en) | 2005-07-21 | 2005-07-21 | Double room type nitrogen oxide chemiluminescence reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100359706A CN100514042C (en) | 2005-07-21 | 2005-07-21 | Double room type nitrogen oxide chemiluminescence reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715882A CN1715882A (en) | 2006-01-04 |
| CN100514042C true CN100514042C (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100359706A Active CN100514042C (en) | 2005-07-21 | 2005-07-21 | Double room type nitrogen oxide chemiluminescence reactor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558212B (en) * | 2013-11-22 | 2016-03-23 | 山东省科学院海洋仪器仪表研究所 | Nitrogen dioxide testing device and detection method |
| CN104330355A (en) * | 2014-11-19 | 2015-02-04 | 武汉怡特环保科技有限公司 | Dual-optical-path oxynitride analyzer |
| CN105044292B (en) * | 2015-08-14 | 2016-11-30 | 泰州市中环分析仪器有限公司 | The nitrogen elemental analyser of configuration ozone thermal decomposer |
| 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 |
| CN111693514B (en) * | 2020-05-07 | 2022-07-05 | 四川轻化工大学 | Online detection device and method utilizing online liquid-gas conversion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3882028A (en) * | 1974-05-17 | 1975-05-06 | Thermo Electron Corp | Multiple chamber chemiluminescent analyzer |
| DE2920215A1 (en) * | 1979-05-18 | 1980-11-20 | Siemens Ag | CHEMILUMINESCENCE ANALYZER REACTION CHAMBER |
| US20030082821A1 (en) * | 2001-10-31 | 2003-05-01 | Lanier William Steven | Method and system for monitoring combustion source emissions |
| CN2589971Y (en) * | 2002-12-25 | 2003-12-03 | 中国科学院安徽光学精密机械研究所 | Air quality nitrogen oxide automatic monitoring apparatus |
-
2005
- 2005-07-21 CN CNB2005100359706A patent/CN100514042C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3882028A (en) * | 1974-05-17 | 1975-05-06 | Thermo Electron Corp | Multiple chamber chemiluminescent analyzer |
| DE2920215A1 (en) * | 1979-05-18 | 1980-11-20 | Siemens Ag | CHEMILUMINESCENCE ANALYZER REACTION CHAMBER |
| US20030082821A1 (en) * | 2001-10-31 | 2003-05-01 | Lanier William Steven | Method and system for monitoring combustion source emissions |
| CN2589971Y (en) * | 2002-12-25 | 2003-12-03 | 中国科学院安徽光学精密机械研究所 | Air quality nitrogen oxide automatic monitoring apparatus |
Non-Patent Citations (4)
| Title |
|---|
| 低浓度氮氧化物化学发光和检测. 何振江.光电工程，第31卷第8期. 2004 |
| 低浓度氮氧化物化学发光和检测. 何振江.光电工程，第31卷第8期. 2004 * |
| 空气中氮氧化物的测定及问题研究. 宋晓春.环境保护，第2期. 1999 |
| 空气中氮氧化物的测定及问题研究. 宋晓春.环境保护，第2期. 1999 * |
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| CN1715882A (en) | 2006-01-04 |
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Assignee: Bettersize Instruments Ltd. Assignor: South China Normal University Contract record no.: 2011210000116 Denomination of invention: Double room type nitrogen oxide chemiluminescence reactor Granted publication date: 20090715 License type: Exclusive License Open date: 20060104 Record date: 20110818 |
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Effective date of registration: 20120121 Address after: 118009 Kimcheon Industrial Zone, Lingang Industrial Zone, Liaoning, Dandong 9 Patentee after: Bettersize Instruments Ltd. Address before: 510630 Guangdong city of Guangzhou province Tianhe District Shipai Patentee before: South China Normal University |
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Address after: 118009 No. 9 Ganquan Road, Kimcheon Industrial Zone, Lingang Industrial Park, Dandong, Liaoning Patentee after: Dandong Bettersize Instruments Ltd. Address before: 118009 Kimcheon Industrial Zone, Lingang Industrial Zone, Liaoning, Dandong 9 Patentee before: Bettersize Instruments Ltd. |