CN105180649B - Radiation spectrum detecting system for kiln tail of cement converter - Google Patents
Radiation spectrum detecting system for kiln tail of cement converter Download PDFInfo
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- CN105180649B CN105180649B CN201510552584.8A CN201510552584A CN105180649B CN 105180649 B CN105180649 B CN 105180649B CN 201510552584 A CN201510552584 A CN 201510552584A CN 105180649 B CN105180649 B CN 105180649B
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Abstract
The invention belongs to the field of kiln gas temperature and concentration detection, and particularly relates to a radiation spectrum detecting system for a kiln tail of a cement converter. The radiation spectrum detecting system comprises a light-passing window which is formed in the side wall of the kiln tail, wherein a spectrograph is arranged outside the light-passing window; an optical guide device for aligning infrared radiation scattered in the light-passing window into parallel light beams and guiding the parallel light beams into the spectrograph is arranged between the spectrograph and the light-passing window; and the spectrograph comprises an interferometer for receiving the parallel light beams and carrying out interference modulating on the parallel light beams; emergent parallel light beams of the interferometer are converged by a parabolic reflector and then enter an infrared detector. According to the radiation spectrum detecting system, the optical guide device is adopted for aligning infrared radiation scattered in the light-passing window into parallel light beams and then the interferometer is adopted for carrying out interference modulating on the parallel light beams, so that the modulated light beams enter the infrared detector after being converged, and an electric signal obtained by the detector is subjected to data processing to obtain spectral data containing to-be-detected component absorption information.
Description
Technical field
The invention belongs to kiln tail gas temperature, Concentration Testing field, and in particular to a kind of cement converter kiln tail radiant light
Spectrum detecting system.
Background technology
Burning is a heterogeneous reaction process for complexity, and the research to combustion mechanism and process is conducive to the control of combustion process
System, the suppression of disposal of pollutants and the raising of efficiency of combustion, the detection of wherein ignition temperature is the key technology in the studies above,
It is also simultaneously domestic and international combustion analysis technique hot issue of interest.Classify on the whole, the method for measurement temperature there are two kinds：
Contact type measurement and non-contact measurement.Traditional thermocouple contact type measurement, although measure accurate and high precision, but in height
Temperature, cannot apply, it is necessary to use non-contacting remote sensing survey under poisonous grade specific condition.Due to Industrial Stoves high temperature, dust high
Environmental characteristics, conventional port gas analysis instrument and thermometric instruments are difficult to meet combustion process parameter for a long time, reliably, accurately
The requirement of measurement.
In addition, the detection of gas component concentrations is also the key technology in the studies above in combustion process, turn for cement
Stove tail is primarily directed to sulfur dioxide and carbon monoxide.SO2 gases are mainly derived from cement raw material during cement industry
Or the sulfur-containing compound in fuel, and the oxysulfide generated under high temperature oxidizing conditions.SO2 be in sulfur-bearing atmosphere pollution most
Important one kind.SO2 is the toxic gas of colourless, irritant stink, non-combustible, easily liquefaction.SO2 is to cause the whole world on a large scale
The main cause of acid rain.The main source of CO is the imperfect combustion of carbon during cement burning during cement industry, and category is easy
Combustion things matter.When processing kiln tail gas using electric cleaner, often set off an explosion because of CO excessive concentrations in waste gas.CO is colourless odorless
Gas, is difficult to liquefy and solidifies, and is slightly soluble in water.CO is in atmosphere blue flame when burning, can be with many metals or nonmetallic
Reaction, extremely toxic phosgene (COCL2) is generated with chlorine reaction.In vertical kiln surface or maintenance deduster, there is poisoning thing frequently
Part.Concentration detection method traditional at present is mostly measured using extraction-type, and extraction-type measurement is disadvantageous in that, extraction process
The interference such as middle sample is adsorbed, other Substances Pollutions, human factor, have a certain impact to certainty of measurement, collect process and take
It is more long, measurement result can not reacting gas concentration in real time change.
However, it can be seen from existing knowwhy, the temperature and concentration of gas can be using the light of infrared radiation signal
Analysis of spectrum draws, therefore is accomplished by a kind of system that accurate detection can be carried out to the infrared radiation signal of kiln.
The content of the invention
It is an object of the invention to provide a kind of cement converter kiln tail that can detect cement converter kiln tail infrared radiation spectrum
Radiation spectrum detecting system.
To achieve the above object, the invention provides following technical scheme：A kind of cement converter kiln tail radiation spectrum detection
The thang-kng window opened up in system, including the side wall of cement converter kiln tail, the thang-kng window outside is provided with spectrometer, the light
It is directional light that infra-red radiation collimation of the optics gatherer for will be scattered in thang-kng window is provided between spectrometer and thang-kng window
Beam is simultaneously imported in spectrometer the collimated light beam；The spectrometer is included for receiving the collimated light beam and to the collimated light beam
The interferometer of interference modulations is carried out, the outgoing collimated light beam of interferometer enters Infrared Detectors after being converged through parabolic mirror.
The technical effects of the invention are that：Infra-red radiation is converged to by collimated light beam, Ran Houzai using optics gatherer
Interference modulations are carried out to collimated light beam by interferometer, Infrared Detectors is entered after the light beam line focus after modulation, to detector
The electric signal of acquisition can include the spectroscopic data that component to be measured absorbs information after carrying out data processing.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2,3 be interferometer in the present invention dimensional structure diagram；
Fig. 4,5 be interferometer of the invention top view；
Fig. 6 is the structural representation of the embodiment of the present invention 2.
Specific embodiment
As shown in figure 1, a kind of cement converter kiln tail radiation spectrum detecting system, including on the side wall of cement converter kiln tail 60
The thang-kng window 61 for opening up, the outside of the thang-kng window 61 is provided with spectrometer 70, between the spectrometer 70 and thang-kng window 61
Optics gatherer 80 is provided with for the infra-red radiation collimation that will be scattered in thang-kng window 61 for collimated light beam and by the directional light
Beam is imported in spectrometer 70；The spectrometer 70 is included for receiving the collimated light beam and carrying out interference tune to the collimated light beam
The interferometer 72 of system, the outgoing collimated light beam of interferometer 72 enters Infrared Detectors 71 after being focused on through parabolic mirror 73.This
Infra-red radiation is converged to collimated light beam by invention using optics gatherer 80, and then collimated light beam is entered by interferometer 72 again
Row interference modulations, enter Infrared Detectors 71 after the light beam line focus after modulation, data are carried out to the electric signal that detector is obtained
The spectroscopic data that component to be measured absorbs information can be included after treatment.
Preferably, as shown in Fig. 2,5, the interferometer 72 includes the beam splitter 10 being fixedly installed, and parallel beam incident is arrived
On the beam splitter 10, transmitted light beam and the reflected beams are formed；The first speculum 21 for also including by being parallel to each other and being oppositely arranged
With the second speculum 22 constitute reflection channel, the beam splitter 10 be located at the reflection channel one end, the transmitted light beam and
The reflected beams enter the reflection channel and the reflection between first, second speculum 21,22, the transmitted light beam and the reflected beams
At least reflected once on first, second speculum 21,22 respectively, then projected from the reflection channel other end, the ejecting end sets
There is first retroreflector 31 and with the reflected beams vertical second retroreflector 32 vertical with transmitted light beam, it is described
Irradiating light beam and the reflected beams are returned after being reflected through first, second retroreflector 31,32 respectively by original route, and in beam splitter 10
Converge to form interference collimated light beam；First, second speculum 21,22 is set relative to the synchronous axial system of base 40, and rotating shaft
Plane where transmitted light beam and the reflected beams.The present invention uses four level crossing both arms sweeping formula interferometer systems, uses
In Fourier transform spectrometer, by rotating first, second speculum 21,22, can simultaneously change the light of two-way different light paths
Journey, so that by rotating less angle, you can obtain larger optical path difference, and then improve the resolution ratio of instrument.
Preferably, the beam splitter 10, first, second speculum 21,22 and first, second retroreflector 31,32
It is installed on a base 40, the base 40 is provided with rotatable platform 20, the rotatable platform 20 is driven by driver element and revolved
Turn, first, second speculum 21,22 is installed on rotatable platform 40 and the both sides of rotatable platform 40 that are placed in.
Further, it is described as shown in figure 3, first, second retroreflector 31,32 is arranged in adjusting bracket
Adjusting bracket includes the first elastic elastic installing plate 34 of installing plate 33 and second of vertical setting, the described first elastic installing plate 33
A vertical edge and base 40 on the framework 30 that sets it is affixed, a horizontal edge of the second elastic installing plate 34 is consolidated with the framework 30
Connect, first, second elastic installing plate 33,34 can be swung due to natural resiliency around fixed edge, described first, second elastic installing plate
33rd, 34 swinging end is equipped with screwed hole, and adjusting screw 35 is provided with the screwed hole, and the adjusting screw 35 withstands on framework 30
On, it is additionally provided with two pilot pins 36 on the framework, two pilot pin 36 is each passed through first, second elastic installing plate 33,34 and outer
End is provided with convex shoulder, and back-moving spring 37 is arranged with the pilot pin, and first retroreflector 31 is arranged on the first elasticity and installs
The inner side of plate 33, second retroreflector 32 is arranged on the inner side of the second elastic installing plate 34.First elastic installing plate 33
The deflection angle of the first retroreflector 31 can be finely adjusted, and then adjust the horizontal displacement of the transmitted light beam, the
Two elastic installing plates 34 can be finely adjusted to the angle of pitch of the second retroreflector 32, and then adjust longitudinal position of the reflected beams
Move, both synergic adjustments, it becomes possible to the transmitted light beam converged on beam splitter and the reflected beams is overlapped.
The invention provides two kinds of specific embodiments of optics gatherer：
Embodiment 1
As shown in figure 1, used as the preferred embodiments of the present invention, the optics gatherer 80 includes tubular shell 81, cylinder
One end in shape housing 81 away from thang-kng window 61 is provided with concave mirror 82, and the focal point of the concave mirror 82 is provided with a convex mirror
83, the center of the concave mirror 82 is provided with a through hole, and the radiation laser beam that thang-kng window 61 is projected is focused on through the concave mirror 82
After incide convex mirror 83, turn into collimated light beam after being reflected through convex mirror 83, the collimated light beam is through the center of concave mirror 82
Through hole is incided in the interferometer 72.
Embodiment 2
As shown in fig. 6, the optics gatherer 80 includes being provided with a convex lens in tubular shell 81, the tubular shell 81
Mirror 85, is provided with the lens 86 for focusing light to be changed into directional light, thang-kng window 61 at the focal position of the convex lens 85
The radiation laser beam planoconvex lens 85 of interior injection is focused on, and then changes into collimated light beam through lens 86, and incide in interferometer 72.
The lens 86 can make convex lens to be concavees lens, with specific reference to its with the position relationship between the focus of convex lens 85 and
It is fixed, concavees lens are selected when lens 86 are located at the inner side of the focus of convex lens 85, otherwise when lens 86 are located at the focus of convex lens 85
During outside, then from convex lens.
On the basis of both examples above, the present invention has carried out following improvement to optics gatherer again：
As a shown in Figure 6, the tubular shell 81 is provided with protection window 84 near one end of thang-kng window 61.
Further, the spectrometer 70 is arranged in a closing housing, and the housing is provided with the incidence for interferometer 72
The light hole that light enters, the tubular shell 81 of the optics gatherer 80 connects with the light hole, and the light hole is provided with
Zinc selenide window 74.
Infrared spectrum detecting system of the invention can be that temperature detection and gas concentration detection provide spectroscopic data.Temperature
The substantially process of detection is as follows：Standard Ratio is measured by experiment first and composes corresponding theoretical temperature value, set up data model, so
Bring the infrared radiation spectrum that the present apparatus is surveyed into database afterwards carries out nonlinear least square fitting with Standard Ratio spectrum, looks for
The Standard Ratio of the minimum that deviates composes corresponding temperature, using it as measurement temperature.And the detection process of gas concentration then can be with
According to the infrared absorption characteristic of under test gas, drawn by spectrum analysis.
Claims (7)
1. a kind of radiation spectrum detecting system of cement converter kiln tail, it is characterised in that：Side including cement converter kiln tail (60)
The thang-kng window (61) opened up on wall, the thang-kng window (61) outside is provided with spectrometer (70), the spectrometer (70) with it is logical
Optics gatherer (80) is provided between light window (61) for being flat by the infra-red radiation collimation of scattering in thang-kng window (61)
Row light beam is simultaneously imported in spectrometer (70) collimated light beam；The spectrometer (70) is including for receiving the collimated light beam simultaneously
The interferometer (72) of interference modulations is carried out to the collimated light beam, the outgoing collimated light beam of interferometer (72) is through parabolic mirror
(73) Infrared Detectors (71) is entered after assembling；
The interferometer (72) includes the beam splitter (10) being fixedly installed, and on parallel beam incident to the beam splitter (10), is formed
Transmitted light beam and the reflected beams；The first speculum (21) and the second speculum (22) for also including by being parallel to each other and being oppositely arranged
The reflection channel of composition, the beam splitter (10) enters positioned at one end of the reflection channel, the transmitted light beam and the reflected beams
The reflection channel simultaneously reflects between first, second speculum (21,22), and the transmitted light beam and the reflected beams at least exist respectively
First, second speculum reflects once on (21,22), is then projected from the reflection channel other end, and the ejecting end is provided with and transmission
First retroreflector (31) of beam orthogonal and second retroreflector (32) vertical with the reflected beams, the transmitted light
Beam and the reflected beams are returned after being reflected through first, second retroreflector (31,32) respectively by original route, and in beam splitter (10)
Converge to form interference collimated light beam；First, second speculum (21,22) is set relative to base (40) synchronous axial system, and
Rotating shaft is perpendicular to the plane where transmitted light beam and the reflected beams.
2. the radiation spectrum detecting system of cement converter kiln tail according to claim 1, it is characterised in that：The beam splitter
(10), first, second speculum (21,22) and first, second retroreflector (31,32) are installed in a base (40)
On, the base (40) is provided with rotatable platform (20), and the rotatable platform (20) is driven by driver element and rotated, and described the
First, the second speculum (21,22) is installed on rotatable platform (40) and the rotatable platform that is placed in (40) both sides.
3. the radiation spectrum detecting system of cement converter kiln tail according to claim 2, it is characterised in that：Described first,
In adjusting bracket, the adjusting bracket includes that the first elasticity of vertical setting is installed to second retroreflector (31,32)
Plate (33) and the second elastic installing plate (34), a vertical edge of the described first elastic installing plate (33) and setting on base (40)
Framework (30) is affixed, and a horizontal edge of the second elastic installing plate (34) is affixed with the framework (30), first, second elastic installing plate
(33,34) can be swung due to natural resiliency around fixed edge, and the swinging end of described first, second elastic installing plate (33,34) is all provided with
There is screwed hole, adjusting screw (35) is provided with the screwed hole, the adjusting screw (35) is withstood on framework (30), the framework
On be additionally provided with two pilot pins (36), two pilot pin (36) is each passed through first, second elastic installing plate (33,34) and outer end is provided with
Convex shoulder, is arranged with back-moving spring (37) on the pilot pin, first retroreflector (31) is installed in the first elastic installing plate
(33) inner side, second retroreflector (32) is installed in the inner side of the second elastic installing plate (34).
4. the radiation spectrum detecting system of cement converter kiln tail according to claim 1, it is characterised in that：The optics is led
Entering device (80) includes tubular shell (81), and the one end in tubular shell (81) away from thang-kng window (61) is provided with concave mirror
(82), the focal point of the concave mirror (82) is provided with a convex mirror (83), and the center of the concave mirror (82) is provided with a through hole,
The radiation laser beam that thang-kng window (61) is projected incides convex mirror (83) after being focused on through the concave mirror (82), through convex mirror (83)
Turn into collimated light beam after reflection, the collimated light beam incides the interferometer (72) through the through hole at the center of concave mirror (82)
It is interior.
5. the radiation spectrum detecting system of cement converter kiln tail according to claim 1, it is characterised in that：The optics is led
Entering device (80) includes tubular shell (81), and a convex lens (85), the convex lens (85) are provided with the tubular shell (81)
Focal position at be provided with and change into the radiant light projected in the lens (86) of directional light, thang-kng window (61) for light will to be focused on
Beam planoconvex lens (85) is focused on, and then changes into collimated light beam through lens (86), and incide in interferometer (72).
6. the radiation spectrum detecting system of the cement converter kiln tail according to claim 4 or 5, it is characterised in that：The cylinder
Shape housing (81) is provided with protection window (84) near one end of thang-kng window (61).
7. the radiation spectrum detecting system of cement converter kiln tail according to claim 6, it is characterised in that：The spectrometer
(70) it is arranged in a closing housing, the housing is provided with the light hole entered for the incident light of interferometer (72), the optics
The tubular shell (81) of gatherer (80) connects with the light hole, and the light hole is provided with zinc selenide window (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552584.8A CN105180649B (en) | 2015-09-01 | 2015-09-01 | Radiation spectrum detecting system for kiln tail of cement converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510552584.8A CN105180649B (en) | 2015-09-01 | 2015-09-01 | Radiation spectrum detecting system for kiln tail of cement converter |
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| CN105180649A CN105180649A (en) | 2015-12-23 |
| CN105180649B true CN105180649B (en) | 2017-05-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107045362A (en) * | 2016-02-07 | 2017-08-15 | 渤海大学 | The compensation heat radiation infrared light supply system and method for radiance |
| CN105891139B (en) * | 2016-06-28 | 2020-09-01 | 中国科学院合肥物质科学研究院 | CO in steel rolling heating furnace2And CO gas detection device |
| CN107219183B (en) * | 2017-06-20 | 2020-03-17 | 安徽星源环境科技有限公司 | Open light path type infrared detection device for atmospheric trace gas |
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| CN2411479Y (en) * | 1999-07-08 | 2000-12-20 | 西安华能电力测控工程有限公司 | Device for detecting boiler flame using infrared light |
| ITMI20041573A1 (en) * | 2004-07-30 | 2006-01-31 | Solvay Solexis Spa | FLUORO-ELASTOMERS |
| US9414024B2 (en) * | 2010-10-12 | 2016-08-09 | Enertechnix, Inc. | Terahertz imaging |
| CN102435581A (en) * | 2011-09-28 | 2012-05-02 | 中国计量学院 | Natural gas heat value calculation method based on natural gas component spectrum analysis |
| CN102384788B (en) * | 2011-11-11 | 2013-07-03 | 山东省科学院自动化研究所 | Field detection device of handheld explosion-proof infrared and ultraviolet flame detector |
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