CN117783443A - Flue gas analysis instrument capable of simultaneously measuring multiple gas components and detection method - Google Patents
Flue gas analysis instrument capable of simultaneously measuring multiple gas components and detection method Download PDFInfo
- Publication number
- CN117783443A CN117783443A CN202311861834.7A CN202311861834A CN117783443A CN 117783443 A CN117783443 A CN 117783443A CN 202311861834 A CN202311861834 A CN 202311861834A CN 117783443 A CN117783443 A CN 117783443A
- Authority
- CN
- China
- Prior art keywords
- measuring
- module
- gas
- gas components
- detection
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 239000007789 gas Substances 0.000 title claims description 77
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 12
- 239000003546 flue gas Substances 0.000 title claims description 12
- 238000004868 gas analysis Methods 0.000 title description 5
- 239000013307 optical fiber Substances 0.000 claims abstract description 22
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 26
- 239000001301 oxygen Substances 0.000 claims description 26
- 229910052760 oxygen Inorganic materials 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 11
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 11
- 238000000862 absorption spectrum Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000012630 chemometric algorithm Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a smoke analysis instrument and a detection method capable of simultaneously measuring multiple gas components, comprising the following steps: the device comprises a shell, a detection assembly and a control assembly, wherein an input port and an output port are arranged on the side edge of the shell; the detection assembly comprises a gas chamber module, the gas chamber module comprises a light source, a measuring pool and a spectrometer, the light source is connected with the spectrometer through optical fibers, the measuring pool is arranged between the light source and the spectrometer, and the optical fibers are arranged in the measuring pool in a penetrating manner; the two ends of the measuring pool are respectively provided with an air inlet and an air outlet, the air inlet is communicated with the input port, and the air outlet is communicated with the output port; the control assembly comprises an output module and a control main board, and the output module and the control main board are electrically connected with the gas chamber module. The invention simultaneously measures SO in the same detection equipment 2 /NO/NO 2 /NH 3 The detection flow is saved, and the detection efficiency is improved. Wherein NO and NO 2 Absorbing in ultraviolet band and saving NO 2 Cost to the NO converter and improved reliability of the system.
Description
Technical Field
The invention relates to the technical field of environment-friendly monitoring equipment, in particular to a smoke analysis instrument capable of simultaneously measuring various gas components and a detection method.
Background
The industrial waste gas can be discharged into the atmosphere after reaching the national discharge standard after a series of treatments, but the treated industrial waste gas still cannot be determined whether to reach the standard, so that the treated industrial waste gas needs to be monitored and treated again in real time.
The main harmful components in the industrial waste gas comprise SO 2 、NO、NO 2 、NH 3 The detection of exhaust gas components is performed by a plurality of different devices in the prior art, wherein the concentration of NO is detected by adding a nitrogen oxide converter to a CEMS system 2 Converted into NO, then the concentration of NO is measured, and the NO can not be directly measured 2 Is a concentration of (3). The catalyst in the nitrogen oxide converter can age rapidly over time, and generally after several months, the conversion efficiency can be reduced from more than 95% to less than 70%, and the standard requirement of the national standard on the conversion efficiency of the nitrogen oxide converter of more than 95% can not be continuously met. In addition to this, a catalyst change of a few months also increases the running maintenance costs and frequency of the plant. In addition, the nitrogen oxide converter needs to operate at a high temperature of about 400 ℃ at which SO in the exhaust gas is measured simultaneously 2 The components can undergo reverse reaction, and part of SO 2 Will react to form SO 3 And other oxides, SO 2 Will be low. When SO in the exhaust gas is measured 2 The measurement error will be large at lower concentrations, especially at ultra low emission conditions, which is more pronounced. While for NH 3 Is currently measured by laser technology.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that in the prior art, different components are required to be detected through a plurality of detection devices in the detection of waste gas, so that the detection cost is high, and the detection efficiency and the detection precision are low.
In order to solve the above technical problems, the present invention provides a smoke analysis apparatus capable of simultaneously measuring a plurality of gas components, comprising:
the shell is provided with an input port and an output port on the side edge;
the detection assembly comprises a gas chamber module, the gas chamber module is arranged inside the shell, the gas chamber module comprises a light source, a measuring pool and a spectrometer, the light source is connected with the spectrometer through an optical fiber, the measuring pool is arranged between the light source and the spectrometer, and the optical fiber is arranged in the measuring pool in a penetrating manner; the two ends of the measuring pool are respectively provided with an air inlet and an air outlet, the air inlet is communicated with the input port, and the air outlet is communicated with the output port;
the control assembly is arranged inside the shell and comprises an output module and a control main board, and the output module and the control main board are electrically connected with the gas chamber module.
In one embodiment of the invention, a three-way valve is arranged between the input port and the air inlet, one of the three-way valve is connected with a flowmeter, and the other two interfaces of the three-way valve are respectively communicated with the input port and the air inlet; one side of the three-way valve is provided with an air pump.
In one embodiment of the invention, the detection assembly further comprises an oxygen measuring module, wherein the oxygen measuring module is arranged between the air outlet and the output port, and the oxygen measuring module is electrically connected with the output module and the control main board.
In one embodiment of the invention, the oxygen measuring module comprises a zirconia oxygen measuring module or an electrochemical oxygen measuring module.
In one embodiment of the present invention, the output module includes an interface board, and a plurality of communication interfaces are disposed on the interface board, and a plurality of communication interfaces are disposed on a surface of the housing.
In one embodiment of the invention, a liquid crystal screen and a film key are arranged on the surface of the shell, and the liquid crystal screen and the film key are electrically connected with the control main board.
In one embodiment of the invention, a power module is arranged inside the shell, and the power module is arranged inside the shell and is electrically connected with the detection component and the control component; the power supply module comprises a 12V power supply and a 24V power supply.
In one embodiment of the invention, the outside cover of the spectrometer is provided with an incubator.
In one embodiment of the invention, the optical fiber is an ultraviolet quartz optical fiber.
The detection method capable of simultaneously measuring the plurality of gas components comprises the flue gas analysis instrument capable of simultaneously measuring the plurality of gas components, and comprises the following operation steps:
s1: introducing 99.999% nitrogen into the gas chamber at a flow rate of 2L/min, collecting spectra and storing data;
s2: sequentially introducing 10%, 20%, 30%, 40%, 50%, 60%, 80% and 100% of SO of the measuring range 2 /NO/NO 2 /NH 3 Standard gas, collection of SO 2 /NO/NO 2 /NH 3 Is a function of the spectral data of (1);
s3: using 100% SO 2 /NO/NO 2 /NH 3 The actual concentration is calculated by standard absorption curve calculation, and the actual concentration is corrected by multiple experiments, so that the actual concentration and the theoretical concentration are within the required error range.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the invention relates to a smoke analysis instrument capable of simultaneously measuring multiple gas components, which adopts an ultraviolet absorption spectrum gas analysis technology and a chemometric algorithm to carry out SO (sulfur oxide) 2 /NO/NO 2 /NH 3 The online analysis of the equal gas has the advantages of completely avoiding the influence of moisture and dust on the measurement precision, along with low detection lower limit, small temperature drift and the like. Realize the simultaneous measurement of SO in the same detection equipment 2 /NO/NO 2 /NH 3 The detection flow is saved, and the detection efficiency is improved. Wherein NO and NO 2 Absorption in the UV band is achieved by simultaneous measurement of NO and NO 2 And add up to obtain NO x Saving purchasing NO for customer 2 Cost to the NO converter and improved reliability of the system.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a top view of the internal structure of the present invention;
FIG. 4 is a schematic view of the structure of the incubator of the present invention;
FIG. 5 is a schematic diagram of the detection of the present invention;
description of the specification reference numerals: 1. a housing; 2. a detection assembly; 3. a control assembly; 4. a power module; 11. an input port; 12. an output port; 13. a flow meter; 15. a liquid crystal panel; 16. a film key; 21. a light source; 22. a measuring cell; 23. a spectrometer; 24. an oxygen measuring module; 25. a three-way valve; 26. an air pump; 27. an optical fiber; 28. a constant temperature box; 31. a control main board; 32. an output module; 221. an air inlet; 222. an air outlet; 321. an interface board; 322. and a communication interface.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Referring to fig. 1 to 5, the present invention discloses a smoke analysis apparatus capable of simultaneously measuring a plurality of gas components, comprising:
the device comprises a shell 1, wherein an input port 11 and an output port 12 are arranged on the side edge of the shell 1;
the detection assembly 2 comprises a gas chamber module, the gas chamber module is arranged inside the shell 1, the gas chamber module comprises a light source 21, a measuring cell 22 and a spectrometer 23, the light source 21 and the spectrometer 23 are connected through an optical fiber 27, the measuring cell 22 is arranged between the light source 21 and the spectrometer 23, and the optical fiber 27 is arranged in the measuring cell 22 in a penetrating manner; the two ends of the measuring tank 22 are respectively provided with an air inlet 221 and an air outlet 222, the air inlet 221 is communicated with the input port 11, and the air outlet 222 is communicated with the output port 12;
the control assembly 3, the control assembly 3 sets up inside the shell 1, the control assembly 3 includes output module 32 and control mainboard 31, output module 32 and control mainboard 31 all with the gas chamber module electricity is connected.
It can be seen that, in the detection process, the sampling gas enters the gas chamber module from the input port 11, the sampled gas enters the measuring cell 22 from the gas inlet 221, the light beam emitted by the light source 21 is converged and enters the optical fiber 27, and is transmitted to the external high-temperature measuring chamber through the optical fiber 27, and is absorbed by the gas to be detected when passing through the gas chamber, and then is transmitted to the spectrometer 23 through the optical fiber 27, and is split by the grating in the spectrometer 23, and the optical signal after being split is converted into an electrical signal by the array sensor, so as to obtain the continuous absorption spectrum information of the gas. The instrument adopts a differential absorption spectrum algorithm according to the spectrum information to obtain the concentration of the measured gas.
The sampled gas contains multiple components, the absorption amounts of the gases with different components to ultraviolet bands after the gases pass through the measuring cell 22 are different, the spectrometer 23 outputs the continuous absorption spectrum information of the gases to a computer through the output module 32, and SO is obtained according to algorithm software installed in the computer 2 NO and NO 2 And (3) an absorption spectrum diagram of the gas in an ultraviolet band. The control module controls the detection of the gas chamber module and feeds back the detection data to an external upper computer through the output module 32.
The invention adopts the ultraviolet absorption spectrum gas analysis technology and chemometric algorithm to carry out SO 2 /NO/NO 2 /NH 3 The online analysis of the equal gas has the advantages of completely avoiding the influence of moisture and dust on the measurement precision, along with low detection lower limit, small temperature drift and the like. Realize the simultaneous measurement of SO in the same detection equipment 2 /NO/NO 2 /NH 3 The detection flow is saved, and the detection efficiency is improved. Wherein NO and NO 2 Absorption in the UV band is achieved by simultaneous measurement of NO and NO 2 And add up to obtain NO x Saving purchasing NO for customer 2 Cost to the NO converter and improved reliability of the system.
Further, a three-way valve 25 is disposed between the input port 11 and the air inlet 221, one of the three-way valve 25 is connected with the flowmeter 13, and the other two interfaces of the three-way valve 25 are respectively communicated with the input port 11 and the air inlet 221.
The three-way valve 25 is used for communicating the gas with the flow meter 13, and detecting the flow rate of the gas through the flow meter 13 to ensure the concentration of the gas fed into the measuring cell 22. Specifically, the flowmeter 13 is disposed outside the housing 1, so that the value of the flowmeter 13 can be observed, and the normal detection can be ensured.
Further, an air pump 26 is provided on one side of the three-way valve 25, and specifically, the air pump 26 is used for providing power to rapidly introduce the sampling gas into the measuring cell 22.
As a preferred scheme of the invention, the measuring cell 22 is processed by stainless steel, mirror polishing and gold plating are not needed in the measuring cell, the gas chamber is strong and low in cost, the influence of moisture and dust is small, the detector is connected with the gas chamber by adopting the optical fiber 27, the replacement is convenient, and the maintenance cost is low. In addition, the air pipes connected at the interfaces are made of polytetrafluoroethylene materials, so that the air pipe has an anti-corrosion effect, and gas leakage in the detection process is avoided.
Further, the detecting assembly 2 further includes an oxygen measuring module 24, the oxygen measuring module 24 is disposed between the air outlet 222 and the output port 12, and the oxygen measuring module 24 is electrically connected to the output module 32 and the control motherboard 31.
As another embodiment of the present invention, the oxygen content of the sampled gas may be detected by the oxygen measurement module 24. The oxygen measuring module 24 comprises a zirconia oxygen measuring module or an electrochemical oxygen measuring module. The corresponding oxygen measuring module 24 is selected according to the output temperature of the sampled gas, wherein the electrochemical oxygen measurement is suitable for the normal-temperature oxygen measurement occasion, and has high measurement precision and strong stability; the zirconia oxygen measurement is not affected by the temperature of the measured gas, and has high response speed and strong pollution resistance. The corresponding oxygen measuring module 24 is selected to be replaced according to the temperature of the sampled gas to be measured.
It should be noted that the sample gas entering from the input port 11 needs to be filtered from dust in the gas by a filter, so as to avoid affecting the detection result and the inside of the detection apparatus.
Further, the output module 32 includes an interface board 321, where a plurality of communication interfaces 322 are disposed on the interface board 321, and a plurality of communication interfaces 322 are disposed on the surface of the housing 1.
Specifically, the communication interface 322 comprises a plurality of communication interfaces 322 such as RS232/RS485, digital quantity output, digital quantity input, analog quantity output, analog quantity input and the like, and has good compatibility.
Further, a liquid crystal screen 15 and a film key 16 are disposed on the surface of the housing 1, and the liquid crystal screen 15 and the film key 16 are electrically connected with the control main board 31. Specifically, the control main board 31 in the invention adopts an HMI main board, and is connected with the liquid crystal display 15 and the film key 16 to realize man-machine exchange. The operation is simple, the use is convenient, and convenience is provided for daily operation, maintenance and management of the instrument.
Further, a power module 4 is arranged inside the shell 1, and the power module 4 is electrically connected with the detection assembly 2 and the control assembly 3; the power supply module 4 includes a 12V power supply and a 24V power supply.
Further, the light source 21 is a pulse xenon lamp, the service life reaches 5-10 years, and the service life reaches 10 years according to 3 times/second calculation; the pulse xenon lamp belongs to a cold light source 21, and has the advantages of long service life, good stability and no preheating time compared with an infrared light source 21. The invention has no optical moving parts, no optical moving parts such as a cutting wheel, a filtering wheel, an interferometer and the like, high reliability, and no damage to the instrument and no influence on the measurement result due to on-site vibration.
As a preferable scheme of the invention, the optical fiber 27 is an ultraviolet quartz optical fiber 27, and compared with the common quartz optical fiber 27, the optical fiber 27 has the characteristic of ultraviolet aging resistance, and the transmittance of the optical fiber 27 is ensured.
Example two
A detection method capable of measuring multiple gas components simultaneously comprises the following specific detection processes: introducing 99.999% nitrogen into the gas chamber at a flow rate of 2L/min, collecting spectrum, storing data, and sequentially introducing 10%, 20%, 30%, 40%, 50%, 60%, 80%, and 100% SO 2 /NO/NO 2 /NH 3 Standard gas, collection of SO 2 /NO/NO 2 /NH 3 Is a function of the spectral data of (1); using lambert's law, with 100% SO 2 /NO/NO 2 /NH 3 Calculation of SO from standard absorption curve 2 /NO/NO 2 /NH 3 Molar absorption coefficient of (2), then SO 2 /NO/NO 2 /NH 3 The molar absorption coefficient of (2) is substituted into the data of the previous groups of spectrums, the actual concentration is calculated, the deviation between the actual concentration and the theoretical concentration is obtained according to multiple experiments, the actually calculated concentration is required to be corrected, and the actual concentration and the theoretical concentration are within the required error range after the correction by a third-order function.
The invention adopts the ultraviolet pulse xenon lamp with the wavelength of 190-2000 nanometers as the light source 21, and has the advantages of long service life, low cost and good repeatability. Due to NO 2 And SO 2 In order to improve the sensitivity of the instrument, a multi-return gas chamber is designed, and the reflection principle is utilized to improve NO 2 And SO 2 Is a detection sensitivity of (a). The reflecting mirror surface is a concave mirror, so that reflected light is not easy to diverge, and the detection sensitivity is further ensured. A dual-band detector capable of collecting 190 nm-290 nm and 350 nm-490 nm simultaneously is manufactured.
Referring to fig. 4, in order to avoid the influence of temperature variation on the spectrum, an incubator 28 is required to cover the outside of the spectrometer 23, so as to ensure that the spectrometer 23 works at a constant temperature of 42 ℃ and improve the stability and reliability of the instrument.
In summary, the invention introduces a flue gas analyzer and a detection method capable of simultaneously measuring a plurality of gas components, and the invention utilizes an ultraviolet spectrum differential technology to measure SO in gas 2 /NO/NO 2 /NH 3 The concentration has good data accuracy and repeatability, and wide application range, and is suitable for the fields of emission monitoring, combustion debugging and the like of power plants, oil refineries, chemical plants, cement plants, scientific research experiments, heating/drying devices and the like.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A smoke analyzer capable of simultaneously measuring a plurality of gas components, comprising:
the shell is provided with an input port and an output port on the side edge;
the detection assembly comprises a gas chamber module, the gas chamber module is arranged inside the shell, the gas chamber module comprises a light source, a measuring pool and a spectrometer, the light source is connected with the spectrometer through an optical fiber, the measuring pool is arranged between the light source and the spectrometer, and the optical fiber is arranged in the measuring pool in a penetrating manner; the two ends of the measuring pool are respectively provided with an air inlet and an air outlet, the air inlet is communicated with the input port, and the air outlet is communicated with the output port;
the control assembly is arranged inside the shell and comprises an output module and a control main board, and the output module and the control main board are electrically connected with the gas chamber module.
2. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: a three-way valve is arranged between the input port and the air inlet, one interface of the three-way valve is connected with a flowmeter, and the other two interfaces of the three-way valve are respectively communicated with the input port and the air inlet; one side of the three-way valve is also provided with an air pump.
3. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: the detection assembly further comprises an oxygen measuring module, wherein the oxygen measuring module is arranged between the air outlet and the output port, and the oxygen measuring module is electrically connected with the output module and the control main board.
4. A smoke analysis instrument for simultaneous measurement of multiple gas components according to claim 3, wherein: the oxygen measuring module comprises a zirconia oxygen measuring module or an electrochemical oxygen measuring module.
5. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: the output module comprises an interface board, a plurality of communication interfaces are arranged on the interface board, and the communication interfaces are arranged on the surface of the shell.
6. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: the surface of the shell is provided with a liquid crystal screen and a film key, and the liquid crystal screen and the film key are electrically connected with the control main board.
7. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: a power module is arranged in the shell and is electrically connected with the detection assembly and the control assembly; the power supply module comprises a 12V power supply and a 24V power supply.
8. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: and an incubator is covered on the outer side of the spectrometer.
9. The flue gas analyzer capable of simultaneously measuring a plurality of gas components according to claim 1, wherein: the optical fiber is an ultraviolet quartz optical fiber.
10. A detection method capable of simultaneously measuring a plurality of gas components, comprising the flue gas analyzer capable of simultaneously measuring a plurality of gas components according to any one of claims 1 to 9, comprising the steps of:
s1: introducing 99.999% nitrogen into the gas chamber at a flow rate of 2L/min, collecting spectra and storing data;
s2: sequentially introducing 10%, 20%, 30%, 40%, 50%, 60%, 80% and 100% of SO of the measuring range 2 /NO/NO 2 /NH 3 Standard gas, collection of SO 2 /NO/NO 2 /NH 3 Is of (3)Spectral data;
s3: using 100% SO 2 /NO/NO 2 /NH 3 The actual concentration is calculated by standard absorption curve calculation,
and correcting the actually calculated concentration through multiple experiments, so that the actual concentration and the theoretical concentration are within a required error range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311861834.7A CN117783443A (en) | 2023-12-29 | 2023-12-29 | Flue gas analysis instrument capable of simultaneously measuring multiple gas components and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311861834.7A CN117783443A (en) | 2023-12-29 | 2023-12-29 | Flue gas analysis instrument capable of simultaneously measuring multiple gas components and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117783443A true CN117783443A (en) | 2024-03-29 |
Family
ID=90381567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311861834.7A Pending CN117783443A (en) | 2023-12-29 | 2023-12-29 | Flue gas analysis instrument capable of simultaneously measuring multiple gas components and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117783443A (en) |
-
2023
- 2023-12-29 CN CN202311861834.7A patent/CN117783443A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205580980U (en) | Multicomponent gaseous pollutants monitoring devices based on non - dispersed infrared spectrum absorbs | |
| CN111982611B (en) | Online detection device and detection method for ammonia in flue gas | |
| CN104266971A (en) | In-situ calibration device and method for online detection of pipeline gas | |
| CN201607402U (en) | Ultraviolet absorption spectrum measuring device of coal sulfur content | |
| CN213875347U (en) | Carbon aerosol component online analysis device | |
| CN113865647A (en) | Carbon emission monitoring system based on CEMS and implementation method | |
| CN219777484U (en) | Air ozone concentration analyzer based on ultraviolet absorption method | |
| Yang et al. | Design and development of an ammonia slip detection device and system for flue gas denitration equipment | |
| CN113029996A (en) | Hydrogen purity online detection instrument and use method and application thereof | |
| CN117783443A (en) | Flue gas analysis instrument capable of simultaneously measuring multiple gas components and detection method | |
| CN2914071Y (en) | Continuous fume emission monitoring system | |
| Xu et al. | Design of nitrogen oxide detection system based on non-dispersive infrared technology | |
| CN213455605U (en) | Continuous monitoring system for smoke emission | |
| CN212808040U (en) | On-line detection device for ammonia in flue gas by using continuous sample injection analysis technology | |
| CN1166937C (en) | Infrared three-point detection device of greasy dirt content in gas | |
| US12053755B2 (en) | Method and system for generating interference spectra for low detection limits using reactor | |
| CN109781639B (en) | Device and method for simultaneously detecting sulfur dioxide and nitrogen dioxide in ambient air | |
| CN103808685B (en) | A kind of low-concentration flue gas infrared spectrum analyser based on Fourier transformation and detection method | |
| CN220650457U (en) | NO 2 Detecting instrument | |
| CN217112072U (en) | System for continuously monitoring greenhouse gas emission in waste treatment process on line | |
| CN201965091U (en) | Multi-component gas analyzer and gas analysis and detection system | |
| EP3042181A1 (en) | Method and apparatus for determining siloxane content of a gas | |
| CN205374299U (en) | Magnanimity gas concentration detection apparatus based on TDLAS | |
| CN218496764U (en) | Portable sulfur trioxide on-line measuring device | |
| CN211877764U (en) | High-performance ammonia gas on-line monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |