JPS6290524A - Method and apparatus for analyzing converter exhaust gas - Google Patents

Abstract

PURPOSE:To always estimate the refining process of a converter with high accuracy, by measuring the intensities of the emission spectrum component of converter exhaust gas and correcting the spectral intensities for attenuation in the light path and further for the temperature condition in the flue. CONSTITUTION:The emitted light of converter exhaust gas is guided to a reflective mirror chamber 4 and the reflected light is guided to a spectrometer 6 to measure the luminous intensities of a spectrum component with each wavelength. Ar-gas is introduced into the chamber 4 from an Ar-gas pressure feeding device 5 to hold the pressure thereof to a predetermined value and the temp. 41 and pressure 42 of said gas are inputted to an attenuation ratio correcting device 7 to calculate the attenuation rate of a light path and the value corresponding to the intensity of component light is calculated. Said value is corrected on the basis of an infrared intensity calculated value corresponding the condition of temp. or the like in the space 21 of the flue to calculate the temp. corrected luminous intensity of an emission spectrum component. Therefore, the component concns. of the exhaust gas and dust in the flue are simultaneously and continuously analyzed and the refining process of a converter can be estimated with extremely high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method and apparatus for analyzing converter exhaust gas. Specifically, the present invention relates to a method and apparatus for simultaneously and continuously analyzing component concentrations of converter exhaust gas and dust to accurately estimate the converter refining process.

(Conventional technology) Pig iron obtained from the blast furnace is refined in a converter.

In this refining process, it is necessary to control the height of the main lance, the oxygen supply rate, the amount of auxiliary material input, the flow rate of bottom blowing gas, the pressure, etc. according to the amount or speed of decarburization, desiliconization, dephosphorization, etc. It won't happen. Therefore, it is necessary to accurately estimate the amount or rate of decarburization, desiliconization, dephosphorization, etc.

In order to estimate the amount or rate of decarburization, desiliconization, dephosphorization, etc., conventionally, a mass spectrometer or the like was installed at the highest part of the exhaust gas flue to measure the component concentration of the exhaust gas. That is, the refining process has been estimated based on measured values of the component concentrations of exhaust gas, and operational parameters such as the height of the main lance, oxygen supply rate, amount of auxiliary raw materials input, bottom blowing gas flow rate, and pressure have been controlled.

(Problems to be Solved by the Invention) Since analysis of the concentration of exhaust gas components using a mass spectrometer needle or the like is limited to gas bodies, a filter is required in the sampling device. It is installed in an environment with temperatures exceeding 1,000 degrees Celsius, where the temperature and humidity change significantly and there is a lot of dust. Therefore, the main lance of such an analyzer is not easy to install, and often causes destruction or clogging of the device.

Furthermore, in the past, an estimation model of converter blowing was created based on information obtained only from the gas body and the refining process was estimated, but component analysis of exhaust gas alone is insufficient for accurate estimation.

That is, in order to accurately understand the refining process, CO, CO
It is necessary to know not only the gaseous components such as 2,02, N2, and H2, but also the degree of oxidation of silicon, phosphorus, sulfur, etc. contained in pig iron, and the ability to form slag. Nevertheless, conventional methods only use information obtained from the gas body among conditions such as gas body, dust, and temperature. In other words, in order to accurately understand the refining process, it is necessary to
, P2O5, Mn01CaO, etc., must be known, and for this purpose analysis of the dust components is essential. Conventional methods that rely on analyzing only gas bodies cannot measure the state of slag formation, so the only way to do this is to create an estimation model and estimate the slag components, which inevitably leads to estimation errors. For example, it has been impossible to maintain high estimation accuracy for all of the various refining requirements, including from high phosphorus steel to ultra-low phosphorus copper.

Therefore, an object of the present invention is to provide a method and apparatus for analyzing converter exhaust gas that solves the problems of these conventional techniques.

In particular, a converter exhaust gas analysis method that simultaneously and continuously analyzes gas bodies and dust in the exhaust gas and makes it possible to constantly and highly accurately estimate decarburization during the refining process and oxidation of silicon, manganese, phosphorus, etc. The purpose is to provide equipment.

(Means and effects for solving the problems) As a result of repeated research to achieve these objectives, the present inventor found that by using spectroscopic analysis that takes advantage of the fact that each element has its own unique emission spectrum, We have come up with the idea that the components of exhaust gas and dust can be analyzed simultaneously and continuously, and the refining process in the converter can be accurately estimated. That is, each element emits ultraviolet light, visible light, and infrared light of specific wavelengths in an excited state. Therefore, by measuring the intensity of each component light constituting the emission spectrum of exhaust gas and dust, the concentration of each component element can be calculated. In this case, if the attenuation rate of light due to the optical path that leads the emitted light in the exhaust gas flue to the spectrometer changes, or if conditions that affect the luminous intensity such as temperature in the flue change, these effects should be considered. It is necessary to correct the spectral component light intensity measurements.

Therefore, the method for analyzing converter flue gas according to the present invention includes guiding the emitted light in the converter flue gas flue from the flue to a predetermined optical path, decomposing the transmitted light that has passed through the optical path into spectra, and calculating the spectral components of the transmitted light. Measure the light intensity for each wavelength, correct the measured value of the transmitted light spectral component light intensity with respect to the attenuation of light due to the optical path, and calculate a value corresponding to the emission spectral component light intensity in the exhaust gas flue for each wavelength. Based on the infrared light intensity calculation value among the values corresponding to the flue-like emission spectrum component light intensity, the value corresponding to the calculated flue-like emission spectrum component light intensity is calculated based on the conditions such as the temperature inside the flue. The temperature-corrected emission spectrum component light intensity is calculated by correcting the temperature-corrected emission spectrum component light intensity, and the component concentration of exhaust gas and dust in the flue is continuously calculated based on the calculated temperature-corrected emission spectrum component light intensity.

If the optical path that guides the light emission in the flue is made of, for example, an optical fiber and the attenuation rate of light is constant, the relationship between the light intensity of the transmitted light spectral component and the light intensity of the flue-like emission spectrum component is considered to be unchanged. It is possible to use the measured value of the transmitted light spectral component light intensity as a value corresponding to the flue-like emission spectral component light intensity.

In such a case, the method for analyzing converter flue gas of the present invention includes guiding the luminescence in the converter flue gas flue from the flue to a predetermined optical path, and decomposing the transmitted light that has passed through the optical path into spectra. The spectral component light intensity of the passing light is measured for each wavelength, and based on the infrared light intensity measurement value of the passing light spectral component light intensity measurement value, the measured passing light spectral component light intensity is calculated based on the temperature etc. in the flue. The temperature-corrected emission spectrum component light intensity can be calculated by correcting the conditions, and the component concentration of exhaust gas and dust in the flue can be continuously calculated based on the calculated temperature-corrected emission spectrum component light intensity. .

The analyzer for converter flue gas according to the present invention also includes an optical path that has a light entrance part on the inner surface of the converter flue gas flue wall and guides light emitted from the flue to the outside of the flue, and a light path that is connected to the light path and passes through the external light path. A spectral component light intensity measuring means for decomposing the passing light into spectra and measuring the intensity of the spectral components of the passing light for each wavelength; an optical path attenuation correction means for correcting the spectral component light intensity and calculating a value corresponding to the flue-like emission spectral component light intensity for each wavelength; and a value corresponding to the emission spectral component light intensity calculated by the optical path attenuation correction means. Based on the values corresponding to the inner and infrared light intensities, the value corresponding to the calculated flue-like emission spectrum component light intensity is corrected for conditions such as the temperature in the flue to calculate the temperature-corrected emission spectrum component light intensity. storage means for storing the relationship between the temperature-corrected emission spectrum component light intensity and the component concentration of the converter exhaust gas and dust; the temperature-corrected emission spectrum component light intensity calculated by the temperature correction means; component concentration calculation means for continuously calculating the component concentration of the converter exhaust gas and dust from the relationship between the temperature-corrected emission spectrum component light intensity and the component concentration of the converter exhaust gas and dust stored in the storage means; It is something to be prepared for.

In addition, if the optical path is an optical fiber or the like and the passing light attenuation rate remains unchanged, for the same reason as stated above, the converter flue gas analyzer of the present invention can be used on the inside surface of the converter flue gas flue wall. An optical path that has a light entrance part and guides the emitted light inside the flue to the outside of the flue, and a light path connected to the optical path that separates the transmitted light that has passed through the external optical path into spectra, and measures the light intensity of the transmitted light spectral components for each wavelength. and a spectral component light intensity measuring means for correcting the measured transmitted light spectral component light intensity for conditions such as temperature in the flue based on the infrared light intensity measurement value of the measured transmitted light spectral component light intensity. temperature correction means for calculating the temperature-corrected emission spectrum component light intensity; storage means for storing the relationship between the temperature-corrected emission spectrum component light intensity and the component concentration of the converter exhaust gas and dust; Continuing the component concentrations of converter exhaust gas and dust from the temperature-corrected emission spectrum component light intensity and the relationship between the temperature-corrected emission spectrum component light intensity and the component concentration of converter exhaust gas and dust stored in the storage means. and component concentration calculation means for calculating the component concentration according to the method.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

(Embodiment) FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention in which a light guide tube is used as an optical path that leads to light emission in an exhaust gas flue.

Exhaust gas and dust generated from the converter 1 during refining are led into the flue 2. Exhaust gas and dust in the flue are 5
It is in a high temperature state of 00°C to 1700°C and emits light with a spectrum specific to its component concentration. That is, each element has its own unique emission spectrum, for example,
In the ultraviolet range, carbon is 193.09 nm, 229.
69nm, silicon is 180.73r+n+, 288°1
6nm, iron is 271.44nm, 229.82nm
, 396.93r+n, 288.37nm, 288.
It has a line spectrum of wavelengths such as 0.08. The same applies to phosphorus, manganese, etc., which are necessary for component analysis of exhaust gas and dust, and the relationship between each element and its specific wavelength is widely known. Further, the emission intensity depends on the emission conditions such as the temperature of the exhaust gas and dust in the flue interior space 21.

This emitted light is guided to a reflector chamber 4 through a light guide tube 3 attached to a flue 2. At this time, A "gas pressure feeder 5
The gas pumped out from the flue 3 prevents exhaust gas and dust from entering the flue 3 and prevents the light guide 3 and the reflector chamber 4 from entering.
purge. The light reflected by the reflector chamber 4 is guided to a spectrometer 6, where it is separated into spectra by a prism, for example, and the intensity of the spectral components of each wavelength across infrared, visible, and ultraviolet wavelengths is measured.

FIG. 2 is a sectional view of the optical path portion of the device of FIG. 1. The structure of the optical path will be explained in detail with reference to the same figure.

A light guide tube probe 31 constituting a light entrance portion of the light guide tube 3 is inserted into a water-cooled tube 32 surrounding it, and is attached to the flue wall 22 via this. The inner surface of the light guide probe 31 is finished with an aluminum mirror finish, and guides the light incident from the flue interior space 21 in the direction of the arrow.

On the other hand, the water cooling pipe 32 is composed of annular two-layer inner and outer waterways 32A and 32B that communicate with each other, and the cooling water introduced from the water inlet 32G of the inner and outer waterways 32A,
The water is drained from the water outlet 32D via the water outlet 32B. As a result,
The light guide probe 31 protruding into the high-temperature flue interior space 21 is constantly cooled by cooling water. Since the temperature of the exhaust gas in the flue interior space 21 reaches from 500° C. to 1700° C. during blowing, the water-cooled tube 32 is necessary to protect the light guide tube probe 31 from thermal destruction. It is preferable that the outer surface portion of the water-cooled pipe 32 protruding into the flue interior space 21 be plated with a hard metal such as chrome plating. This is to prevent wear caused by high-temperature dust in the exhaust gas flowing through the flue interior space 2I and damage caused by dust adhesion.

A reflecting mirror 43 with an aluminum mirror finish is installed in the reflecting mirror chamber 4 connected to the light guide tube probe 31.
The light traveling inside the light guide tube probe 31 in the direction of the arrow is reflected. The reflected light travels within the connecting portion 44 toward the spectroscope 6 in the direction of the arrow. It is preferable that the inner surfaces of the reflector chamber 4 and the connecting portion 44 are also finished with an aluminum mirror finish.

In this way, the light from the flue interior space 21 is transmitted to the reflector chamber 4.
It is configured so that it is reflected in the flue interior space 21.
This prevents the radiant heat from directly entering the spectrometer 6.

Ar gas is pumped into the reflector chamber 4 via a pressure regulating valve 52 . The reflecting mirror 43 is cooled by the Ar gas from the static gas pump 5, and the static gas that has passed through the reflecting mirror chamber 4 is supplied to the light guide probe 3I. The static gas is also directly led to the connection part 44 via the communication pipe 53, and connects the connection part 44, the reflector chamber 4, and the light guide tube probe 3.
Purge inside 1. A flow meter 51 is installed in the Ar gas pressure feed pipe 53.
A pressure gauge 42 is provided to measure the flow rate and pressure of Ar gas sent to the reflector chamber 4. The pressure regulating valve 52 is adjusted based on these measured values, and the Ar gas pressure in the reflector chamber 4 and the light guide probe 31 can be maintained within a predetermined range. Further, a thermometer 41 is provided in the reflector chamber 4, and the measured temperature is sent to the attenuation rate corrector 7 together with the measured value of the pressure gauge 42, and the temperature is sent to the attenuation rate corrector 7.
It is used to calculate the attenuation rate of the optical path from the to the spectrometer 6.

As shown in FIG. 1, the attenuation rate corrector 7 is connected to the spectrometer 6, a thermometer 41, and a pressure gauge 42.

The attenuation rate corrector 7 calculates the attenuation rate of light due to Ar gas in the optical path leading to the spectrometer 6 based on the outputs of the thermometer 41 and the pressure gauge 42, and calculates the reciprocal of the attenuation rate of the light by Ar gas in the optical path leading to the spectrometer 6. By multiplying the measured intensity value, a value corresponding to the light intensity of the emission spectrum component in the flue interior space 21 is calculated for each wavelength, and the result is output to the temperature corrector 8.

Note that it is preferable that the relationship between the Ar gas pressure and temperature in the optical path and the attenuation rate of light be determined experimentally in advance and stored in a memory provided in the attenuation rate corrector 7. Thereby, even if the Ar gas pressure within the optical path fluctuates, an accurate attenuation rate can always be determined.

Incidentally, the attenuation rate of light depends on its wavelength.

FIG. 3 shows an example of the output of the attenuation rate corrector 7. In the figure, the values corresponding to the light emission spectral component light intensities are given as a function of the wavelength of each component light represented by n+1 units on the horizontal axis. That is, the spectroscope 6 outputs the spectral component light intensity of the light that has passed through the optical path as a function of the wavelength of each component light ranging from infrared, visible light, and ultraviolet light, and the attenuation rate corrector 7 outputs the intensity of the spectral components of the light that has passed through the optical path. is multiplied by the reciprocal of the attenuation rate, respectively, to obtain and output a value corresponding to the light intensity of the emission spectrum component for each wavelength.

The temperature corrector 8 includes a memory 82 and an arithmetic unit 83, and corrects the output of the attenuation rate corrector 7 with respect to light emission conditions such as the temperature of the flue interior space 21.

The emission intensity of the exhaust gas and dust entering the flue interior space 21 varies depending on conditions such as the temperature of the space, even though the concentration of the components is the same. Incidentally, the light emission conditions such as the temperature of the flue interior space 21 are reflected in the intensity of infrared rays in the emission spectrum within the space. The memory 82 stores the relationship between the infrared intensity of, for example, 1000 na+ in the flue interior space 21 and the emission intensity of other wavelength ranges, which has been determined experimentally in advance. Arithmetic unit 8
1 corrects the output of the attenuation rate corrector 7 with respect to conditions such as the temperature of the flue interior space 21 based on the relationship stored in the memo IJ82, and sends the temperature-corrected emission spectrum component light intensity for each wavelength to the component concentration calculator 9. Output.

The memory 92 of the component concentration calculator 9 stores wavelengths specific to the emission spectrum of each element, and also stores the relationship between the spectral component light intensity of those wavelengths and the concentration of each element. That is, each element has its own unique line spectrum, and the memory 92 stores the relationship between each element and the wavelengths that make up these line spectra.

For example, in the ultraviolet range, carbon is 193.09nn+
, 229.69nm, silicon is 180.73r+m,
288.16nm, iron is 271°44nm, 229.
82nm, 396.93nm, 288.37nm, 2
It has a line spectrum with a wavelength of 88.08, etc. The same applies to phosphorus, manganese, etc., which are necessary for component analysis of exhaust gas and dust, and the relationship between each element and its specific wavelength is widely known.

In addition, the flue interior space 2 where the light emission conditions such as temperature are constant values.
The relationship between the concentration of the constituent elements of the exhaust gas and dust and the light intensity of the emission spectrum components in Example 1 is experimentally determined in advance and stored in the memory 92. The temperature corrector 8 corrects the value corresponding to the light emission spectrum component light intensity in the flue interior space 21 outputted by the attenuation rate corrector 7 to a value corresponding to the light emission spectrum component light intensity under this constant light emission condition. .

The arithmetic unit 91 calculates the temperature-corrected emission spectrum component light intensity for each wavelength output by the temperature corrector 8, the relationship between the component elements and specific wavelengths stored in the memory 92, and the spectral component light intensity and element concentration. Based on the relationship, the component concentrations of exhaust gas and dust are calculated and output as component concentration 9A.

Next, with reference to FIGS. 4 and 5, an embodiment will be described in which an optical fiber is used as the optical path for guiding the light emitted in the flue. The device whose block diagram is shown in FIG. 4 has the same structure as the device shown in FIG. 1 except for the optical fiber 30 and the attenuation rate corrector 7 that constitute the optical path, so only these parts will be explained. , description of other parts will be omitted.

FIG. 5 is a sectional view of the optical path portion of the device of FIG. 4. The optical fiber 30 is housed in a hollow cylindrical casing 31, inserted into a water-cooled tube configured similarly to that shown in FIG. 2, and attached to the wall surface of the flue 2. casing 33
A condensing lens 34 is provided in front of the flue 2 to guide the light emitted from the flue 2 into the optical fiber 30. In addition, the meter gas fed from the Ar gas pressure feeder 5 travels through the Ar gas pressure feed pipe 53 that surrounds the optical fiber 30 and extends between the optical fiber 30 and the casing 33 to cool the optical fiber 30. Furthermore, the inner surface of the condenser lens 34 and the front surface of the optical fiber 30 are purged.

As a result, together with the action of the cooling pipe, recrystallization of the optical fiber 30 is effectively prevented. Note that the pressure feeder 5 may use other inert gas, such as nitrogen gas, instead of ^r gas.

Since the optical fiber 30 hardly transmits ultraviolet rays,
Only infrared light and visible light reach the spectrometer 6. The spectrometer 6 decomposes these lights into spectra, measures the spectral component light intensity, and outputs it to the attenuation rate corrector 7.

In the apparatus shown in FIG. 4, as a result of using the optical fiber 30 in the optical path, the attenuation rate of light through the optical path is kept approximately constant for each wavelength. Therefore, the memory 7I of the attenuation rate corrector 7
stores this experimentally determined constant attenuation factor for each wavelength.

The calculator 72 multiplies the measured value of the spectral component light intensity output from the spectrometer 6 by the reciprocal of the attenuation rate for each wavelength stored in the memory 71 to calculate a value corresponding to the light emission spectral component light intensity in the flue 2. and outputs this to the temperature compensator 8.

In the embodiment shown in FIG. 4 using the optical fiber 30 as described above, only the wavelength range from visible light to infrared light is measured. Therefore, the component concentration calculator 9 calculates the component concentrations of exhaust gas and dust based only on the emission spectrum component light intensities in these wavelength ranges. however,
Since the attenuation factor of the optical fiber 30 is kept constant, there is an advantage that the structure of the attenuation factor corrector 7 can be simplified compared to the device shown in FIG. 1.2. Furthermore, in some cases, the attenuation rate corrector 7 may be omitted and the measured value of the spectrometer 6 may be used as the value corresponding to the light intensity of the emission spectrum component within the flue 2. Note that, for example, the following wavelengths are suitable for spectrum measurement of elements in the visible light and infrared 'IS iJ regions.

C: 965.849.909.489.906.14
8 (r+n+)St: 794.349, T93
．． 220.791.838 (nw)Mn: 874.
093.870.376 (nm) P: 255.
49, 255; 33, 253.40.959.354
(nm) Fe: 396.93, 438.36, 440
．． 4B, 868.86 (nm) Ca: 854.2
1,866,22,714.815 (++m) (Effect) According to the present invention, as described above, the exhaust gas and dust in the flue 2 can be analyzed simultaneously and continuously, and can be analyzed with extremely high precision. Furnace tiH! T! It becomes possible to estimate the process. In particular, since the measured values of the light intensity of the emission spectrum components are corrected by the attenuation rate corrector 7 and the temperature corrector 8, the accuracy is further improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention using a light guide tube as an optical path, FIG. 2 is a sectional view of the optical path portion of the device shown in FIG. 1, and FIG. 3 is a block diagram of the device shown in FIG. 1. FIG. 4 is a block diagram of an embodiment using an optical fiber as the optical path; FIG. 5 is a cross-sectional view of the optical path portion of the device shown in FIG. 4. . In the figures, the same reference numerals indicate the same or corresponding parts. l: Converter 2: Flue 21: Space inside the flue 22: Flue wall 3: Light guide tube 30: Optical fiber 4: Reflector chamber 4I: Thermometer 42 = Pressure needle 5: ^r Gas pumper

Claims (18)

[Claims] (1) Guide the emitted light in the converter exhaust gas flue from the flue to a predetermined optical path, decompose the transmitted light that passed through the optical path into spectra, and measure the spectral component light intensity of the transmitted light for each wavelength; The measured value of the transmitted light spectral component light intensity is corrected with respect to the attenuation of light due to the optical path, and a value corresponding to the emission spectral component light intensity in the exhaust gas flue is calculated for each wavelength, and the calculated value of the emission spectral component light intensity in the flue is Based on the calculated value of the infrared light intensity among the corresponding values, the value corresponding to the calculated luminescence spectrum component light intensity in the flue is corrected for conditions such as the temperature in the flue to calculate the temperature-corrected luminescence spectrum component light intensity. and continuously calculating component concentrations of exhaust gas and dust in the flue based on the calculated temperature-corrected emission spectrum component light intensity. (2) The method for analyzing converter exhaust gas according to claim 1, wherein the optical path includes a tubular body whose inner surface is mirror-finished, and an inert gas pumped into the tubular body. (3) The converter exhaust gas analysis method according to claim 2, wherein the correction of the transmitted light spectral component light intensity regarding the attenuation of light by the optical path is performed based on the measured values of the pressure and temperature of the inert gas. . (4) The relationship between the emission spectrum component light correction intensity and the exhaust gas and dust is determined experimentally in advance, and the component concentration of the exhaust gas and dust in the flue is based on this experimentally determined relationship and the emission spectrum component light correction intensity. 1. A converter exhaust gas analysis method according to claim 1, which continuously calculates . (5) Guide the emitted light in the converter exhaust gas flue from the flue to a predetermined optical path, decompose the passing light that has passed through the optical path into spectra, measure the spectral component light intensity of the passed light for each wavelength, and pass through the flue. Based on the infrared light intensity measurement value of the light spectral component light intensity measurement value, the measured transmitted light spectral component light intensity is corrected for conditions such as the temperature in the flue to calculate the temperature-corrected emission spectral component light intensity. , A method for analyzing converter exhaust gas, which continuously calculates component concentrations of exhaust gas and dust in the flue based on the calculated temperature-corrected emission spectrum component light intensity. (6) The converter exhaust gas analysis method according to claim 5, wherein the optical path is comprised of an optical fiber. (7) Experimentally determine in advance the attenuation rate of the passing light through the optical fibers constituting the optical path, and correct the measured value by multiplying the measured value of the light intensity of the transmitted light spectral component by the reciprocal of the attenuation rate. A method for analyzing converter exhaust gas according to claim 6. (8) An optical path that has a light input part on the inner surface of the converter flue gas flue wall and guides the light emitted from the flue to the outside of the flue, and a light path connected to the optical path that decomposes the passing light that has passed through the external optical path into a spectrum and passes it. A spectral component light intensity measuring means for measuring the light spectral component light intensity for each wavelength; and a spectral component light intensity measuring means for determining the attenuation rate of the passing light through the optical path, correcting the passing light spectral component light intensity based on the determined attenuation rate, and correcting the passing light spectral component light intensity within the flue. an optical path attenuation correction means for calculating a value corresponding to the emission spectrum component light intensity; and a value corresponding to the infrared light intensity among the values corresponding to the emission spectrum component light intensity calculated by the optical path attenuation correction means, temperature correction means for calculating a temperature-corrected emission spectrum component light intensity by correcting a value corresponding to the calculated emission spectrum component light intensity in the flue with respect to conditions such as temperature within the flue; A storage means for storing the relationship between component concentrations of converter exhaust gas and dust; a temperature-corrected emission spectrum component light intensity calculated by the temperature correction means; and a temperature-corrected emission spectrum component light intensity stored in the storage means. A converter exhaust gas analyzer comprising: component concentration calculation means for continuously calculating component concentrations of converter exhaust gas and dust from the relationship between the component concentrations of converter exhaust gas and dust. (9) The optical path includes a light guide tube whose inner surface is mirror-finished, and a reflector chamber having a reflector that changes the course direction of the light that has passed through the light guide tube. Analyzer for converter exhaust gas. (10) The analyzer for converter exhaust gas according to claim 9, comprising an inert gas pumping means for pumping an inert gas to the light guide tube and the reflecting mirror chamber. (11) The optical path attenuation correction means includes a pressure gauge and a thermometer that measure the pressure and temperature of the inert gas pumped into the optical path, and a pressure gauge and a thermometer that measure the pressure and temperature of the inert gas in the optical path, and a an attenuation rate storage means for storing a relationship between the attenuation rate and the attenuation rate; 11. The analyzer for converter exhaust gas according to claim 10, comprising means for calculating an attenuation rate. (12) The converter exhaust gas analyzer according to claim 11, wherein the light entrance section of the light guide tube includes a water-cooled tube surrounding the light entrance section. (13) The analyzer for converter exhaust gas according to claim 9, wherein the light guide tube and the inner surface of the reflecting mirror chamber and the reflecting mirror are mirror-finished with aluminum. (14) An optical path that has a light input part on the inner surface of the converter flue gas flue wall and guides the light emitted from the flue to the outside of the flue; A spectral component light intensity measuring means for measuring the light spectral component light intensity for each wavelength; temperature correction means for calculating temperature-corrected emission spectrum component light intensity by correcting conditions such as temperature in the flue; and storing a relationship between temperature-corrected emission spectrum component light intensity and component concentration of converter exhaust gas and dust. From the storage means, the temperature-corrected emission spectrum component light intensity calculated by the temperature correction means, and the relationship between the temperature-corrected emission spectrum component light intensity and the component concentration of converter exhaust gas and dust stored in the storage means, A converter exhaust gas analyzer comprising: component concentration calculation means for continuously calculating component concentrations of converter exhaust gas and dust; (15) The analyzer for converter exhaust gas according to claim 14, wherein the optical path is constituted by an optical fiber. (16) The analyzer for converter exhaust gas according to claim 15, wherein the light entering portion of the optical path is provided with a lens that focuses the light emitted from the flue onto an optical fiber. (17) The analyzer for converter exhaust gas according to claim 16, comprising an inert gas pumping means for pumping an inert gas for purging the optical fiber and lens. (18) An attenuation rate in which the attenuation rate of the light passing through the optical fibers constituting the optical path is determined experimentally in advance, and the measured value is corrected by multiplying the measured value of the light intensity of the transmitted light spectral component by the reciprocal of the attenuation rate. Claim 1 comprising correction means
Converter exhaust gas analyzer according to item 4.