Component analysis system and component detection device

Abstract

The component analysis system includes a component detection device and a gas chromatograph with a separation column. The component detection device includes: a redox furnace having a first flow path for flowing a gas containing sample components separated by the separation column, the redox furnace being used to oxidize and reduce the sample components in the gas flowing through the first flow path; a reaction unit having an inlet containing a gas containing the reduced sample components, the reaction unit being used to cause a chemical reaction accompanied by luminescence in the sample components introduced from the inlet; a photodetector for detecting light generated in the reaction unit; and a holding member for holding the redox furnace and the reaction unit, the downstream end of the first flow path being directly connected to the inlet of the reaction unit or connected via a second flow path.

Description

Technical Field

[0001] The present invention relates to a component analysis system and a component detection device for detecting sample components. Background Art

[0002] A sulfur chemiluminescence detector (SCD) is known that detects sulfur (S) components in a sample using a chemical reaction accompanied by light emission (see, for example, Patent Document 1).

[0003] In the SCD described in Patent Document 1, a gas containing sulfur components in a sample separated by a separation column of a gas chromatograph is oxidized and reduced by an oxidation device (oxidation-reduction furnace). Thus, sulfur monoxide (SO) is generated from the sulfur components in the sample. The generated sulfur monoxide is introduced from the oxidation device through a delivery pipe to a reaction unit.

[0004] Here, the oxidizing device is mounted on the upper surface of the housing of the gas chromatograph and is arranged to extend upward from the upper surface. On the other hand, the reaction unit is arranged on the side of the housing of the gas chromatograph. The delivery pipe has a length of about 140 cm to 200 cm and is arranged to connect the upper end of the oxidizing device to the reaction unit.

[0005] Ozone (O3) is introduced into a reaction unit together with sulfur monoxide, where sulfur monoxide reacts with ozone to generate excited state substances of sulfur dioxide (SO2). The light generated when the sulfur dioxide changes to the ground state is detected by a photodetector. The sulfur content in the sample is quantified based on the intensity of the detected light.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2015-59876 Summary of the invention

[0009] Problem that the invention aims to solve

[0010] An object of the present invention is to provide a component analysis system and a component detection device capable of detecting sample components with high accuracy.

[0011] Solutions for solving problems

[0012] A first embodiment of the present invention relates to a component analysis system, comprising: a gas chromatograph having a separation column; and a component detection device, wherein the component detection device includes: a redox furnace having a first flow path for circulating a gas containing a sample component separated by the separation column, the redox furnace being used to oxidize and reduce the sample component in the gas flowing through the first flow path; a reaction unit having an inlet portion for a gas containing the reduced sample component, the reaction unit being used to cause the sample component introduced from the inlet portion to undergo a chemical reaction accompanied by luminescence; a photodetector for detecting light generated in the reaction unit; and a retaining member for retaining the redox furnace and the reaction unit, wherein the downstream end of the first flow path is directly connected to the inlet portion of the reaction unit or is connected via a second flow path.

[0013] A second embodiment of the present invention relates to a component detection device, which is used together with a gas chromatograph having a separation column, and the component detection device comprises: a redox furnace, which has a first flow path for circulating a gas containing a sample component separated by the separation column, and the redox furnace is used to oxidize and reduce the sample component in the gas flowing through the first flow path; a reaction unit, which has an inlet part for a gas containing the reduced sample component, and the reaction unit is used to cause the sample component introduced from the inlet part to undergo a chemical reaction accompanied by luminescence; a light detector, which is used to detect light generated in the reaction unit; and a retaining member, which is used to retain the redox furnace and the reaction unit, wherein the downstream end of the first flow path is directly connected to the inlet part of the reaction unit or is connected via a second flow path.

[0014] A third embodiment of the present invention relates to a component analysis system, comprising: a gas chromatograph having a separation column; and a component detection device, wherein the component detection device includes: a redox furnace having a first flow path for circulating a gas containing a sample component separated by the separation column, the redox furnace being used to oxidize and reduce the sample component in the gas flowing through the first flow path; a reaction unit having an inlet portion for a gas containing the reduced sample component, the reaction unit being used to cause the sample component introduced from the inlet portion to undergo a chemical reaction accompanied by luminescence; and a light detector being used to detect light generated in the reaction unit, wherein the downstream end of the first flow path is connected to the inlet portion of the reaction unit or is connected via a second flow path having a length of less than 100 cm.

[0015] A fourth embodiment of the present invention relates to a component detection device, which is used together with a gas chromatograph having a separation column, and the component detection device comprises: a redox furnace, which has a first flow path for circulating a gas containing a sample component separated by the separation column, and the redox furnace is used to oxidize and reduce the sample component in the gas flowing through the first flow path; a reaction unit, which has an inlet part for a gas containing the reduced sample component, and the reaction unit is used to cause the sample component introduced from the inlet part to undergo a chemical reaction accompanied by luminescence; and a light detector, which is used to detect light generated in the reaction unit, wherein the downstream end of the first flow path is connected to the inlet part of the reaction unit or is connected via a second flow path having a length of less than 100 cm.

[0016] Effects of the Invention

[0017] According to the present invention, sample components can be detected with high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a diagram showing the configuration of a component analysis system according to an embodiment.

[0019] Figure 2 This is a diagram showing the comparison results of the absolute sensitivity of the SCD according to the example and the comparative example.

[0020] Figure 3 It is a graph showing the comparison results of the S / N ratio of the SCD according to the example and the comparative example.

[0021] Figure 4 This is a diagram showing the comparison results of the minimum detection amount of SCD according to the example and the comparative example.

[0022] Figure 5 This is a diagram showing the results of comparison of the selectivity of the sulfur component of SCD according to Examples and Comparative Examples.

[0023] Figure 6 It is a schematic perspective view for explaining a first arrangement example of the redox furnace and the reaction unit.

[0024] Figure 7 It is a schematic perspective view for explaining a second arrangement example of the redox furnace and the reaction unit.

[0025] Figure 8 It is a schematic perspective view for explaining a third arrangement example of the redox furnace and the reaction unit.

[0026] Fig. 9 It is a schematic perspective view for explaining a fourth arrangement example of the redox furnace and the reaction unit.

[0027] Fig.10 It is a schematic perspective view for explaining a fifth arrangement example of the redox furnace and the reaction unit.

[0028] Fig.11 It is a schematic perspective view for explaining a sixth arrangement example of the redox furnace and the reaction unit.

[0029] Fig.12 It is a schematic perspective view for explaining a seventh arrangement example of the redox furnace and the reaction unit.

[0030] Fig.13 It is a schematic perspective view for explaining an eighth arrangement example of the redox furnace and the reaction unit.

[0031] Fig.14 This is a schematic perspective view showing a state in which the first introduction portion is provided so as to face the redox furnace in the second arrangement example. DETAILED DESCRIPTION

[0032] In SCD, sulfur monoxide (SO) is generated by oxidizing and reducing the sulfur component in the sample. The sulfur monoxide generated here is chemically unstable. The inventors of the present invention focused on this point and simulated the deterioration of sulfur monoxide from the redox furnace to the reaction unit. As a result, it was found that the longer the time (hereinafter referred to as the transport time) for the generated sulfur monoxide to pass through the flow path (the above-mentioned transport pipe) from the redox furnace to the reaction unit, the easier it is to deteriorate into other sulfur compounds such as hydrogen sulfide (H2S).

[0033] Even if other sulfur compounds obtained by deterioration are introduced into the reaction unit and react with ozone (O3), they are less likely to become excited than sulfur monoxide. Therefore, in the reaction unit, sulfur compounds other than sulfur monoxide hardly contribute to the generation of light. Through these simulations and studies, the inventors of the present invention have come to the following insights: by shortening the delivery time of the gas from the redox furnace to the reaction unit, more sulfur monoxide can be introduced into the reaction unit. Based on this insight, the inventors of the present invention have found that the SCD having the structure described in Patent Document 1 has room for improving the detection accuracy of the sulfur component.

[0034] Hereinafter, a component analysis system and a component detection device according to an embodiment will be described with reference to the drawings.

[0035] [1] Basic structure of the component analysis system

[0036] Figure 1 1 is a diagram showing a configuration of a component analysis system according to an embodiment. A component analysis system 1 according to the present embodiment is configured to be able to analyze sulfur components (sulfur compounds) in a sample, and includes a gas chromatograph 2 and a component detection device 3 .

[0037] The gas chromatograph 2 includes a sample introduction section 10 and a column oven 11. The column oven 11 has a structure in which a separation column 12 and a heating device (not shown) are provided in a column housing 11C. The upstream end of the separation column 12 is connected to the sample introduction section 10. The downstream end of the separation column 12 is led out of the column housing 11C. The sample introduction section 10 is a so-called vaporization chamber for injecting a sample containing a sulfur component and a solvent into a carrier gas supplied to the separation column 12.

[0038] The component detection device 3 involved in this embodiment is a sulfur chemiluminescence detector (SCD). The component detection device 3 includes a redox furnace 20, a reaction unit 30, a photodetector 40, a control unit 50, a flow controller 60, an ozone generator 70, a scrubber 80, and a pump 90. In addition, the component detection device 3 includes a detection device housing 3C for accommodating these multiple components.

[0039] The redox furnace 20 includes a flow path forming member 21 and a heating device not shown. The flow path forming member 21 is composed of a plurality of tubular members extending linearly in one direction, and the flow path forming member 21 has an upstream end 21U and a downstream end 21L. The gas flow path formed by the flow path forming member 21 is equivalent to the first flow path. The upstream end 21U of the flow path forming member 21 is connected to the downstream end of the separation column 12. In the redox furnace 20, sulfur monoxide (SO) is generated by introducing a sample containing sulfur components into the upstream end 21U. The details of the chemical reaction occurring in the redox furnace 20 will be described later. In addition, the redox furnace 20 is arranged in the detection device housing 3C in a state covered by an insulating material not shown.

[0040] The reaction unit 30 includes a first inlet 31, a second inlet 32, and an outlet 33. The first inlet 31 is connected to the downstream end 21L of the flow path forming member 21 via a delivery tube TL0. The gas flow path formed by the delivery tube TL0 corresponds to the second flow path. The delivery tube TL0 is formed of, for example, a flexible resin pipe.

[0041] In the present embodiment, the length of the transport pipe TL0 is determined so that the sulfur monoxide generated in the redox furnace 20 does not deteriorate in a manner exceeding the degree allowed during the period from the redox furnace 20 to the reaction unit 30, and the length of the transport pipe TL0 is, for example, 100 cm or less. The length of the transport pipe TL0 is preferably 70 cm or less, and more preferably 55 cm or less. In addition, the length of the transport pipe TL0 may be determined to be shorter than the length of the flow path forming member 21.

[0042] In addition, Figure 1In the example of FIG. 1 , the transport tube TL0 is disposed outside the detection device housing 3C, but the transport tube TL0 may be disposed so that at least a portion of the transport tube TL0 is located inside the detection device housing 3C. In addition, in the present embodiment, the downstream end 21L of the flow path forming member 21 may be directly connected to the first introduction portion 31 of the reaction unit 30. In this case, the transport tube TL0 is not required.

[0043] The second introduction part 32 is connected to the ozone generator 70 via the delivery pipe TL1. The exhaust pipe EL is connected to the outlet part 33. The exhaust pipe EL is provided with a scrubber 80 and a pump 90 in order from upstream to downstream. The pump 90 sucks the sample component separated in the separation column 12 of the gas chromatograph 2 together with the carrier gas through the exhaust pipe EL, the reaction unit 30, the delivery pipe TL0 and the flow path forming member 21. The scrubber 80 removes ozone from the gas flowing through the exhaust pipe EL.

[0044] Nitrogen (N2), oxygen (O2) and hydrogen (H2) are supplied from a nitrogen supply source, an oxygen supply source and a hydrogen supply source (not shown) to the flow controller 60. The flow controller 60 supplies the supplied nitrogen, oxygen and hydrogen to different parts of the oxidation-reduction furnace 20. In the flow path forming member 21, a nitrogen supply part, an oxygen supply part and a hydrogen supply part are arranged in order from upstream to downstream. In the following description, the oxygen supply part and the hydrogen supply part in the flow path forming member 21 are respectively referred to as an oxidation part 22 and a reduction part 23.

[0045] The flow controller 60 also supplies oxygen supplied from the oxygen supply source to the ozone generator 70. In this case, the ozone generator 70 generates ozone (O3) from the supplied oxygen and supplies the generated ozone to the second introduction part 32 of the reaction unit 30 through the transfer pipe TL1.

[0046] A photodetector 40 is provided in a manner close to the reaction unit 30. An optical filter F is provided between the reaction unit 30 and the photodetector 40. The optical filter F transmits light in a specific wavelength range and does not transmit light in other wavelength ranges. In the present embodiment, the specific wavelength range is determined to include the wavelength of light generated by the reaction of ozone and sulfur monoxide (light generated when sulfur dioxide changes to the ground state).

[0047] The photodetector 40 is, for example, a photomultiplier tube (PMT), and detects light generated in the reaction cell 30 and passing through the optical filter F. The photodetector 40 supplies a detection signal corresponding to the amount of the detected light to the control unit 50 .

[0048] The control unit 50 includes, for example, a CPU (central processing unit) and a memory, or a microcomputer, and controls the components of the component detection device 3. The control unit 50 also generates a chromatogram based on the detection signal provided from the photodetector 40. Thus, the concentration of the sulfur component in the sample injected into the gas chromatograph 2 can be calculated using the generated chromatogram.

[0049] In the above-mentioned component detection device 3, the carrier gas (hereinafter referred to as the target gas) containing the sulfur component separated by the separation column 12 is introduced into the flow path forming member 21 of the redox furnace 20 by operating the pump 90. The target gas introduced into the flow path forming member 21 flows toward the oxidation section 22 while mixing with the nitrogen supplied from the flow controller 60 near the upstream end 21U. Nitrogen is used to promote the redox reaction related to the target gas described later and to reduce the contamination of the gas flow path in the component detection device 3. In addition, nitrogen may not be supplied to the redox furnace 20. Alternatively, other inactive gases such as argon (Ar) may be supplied to the redox furnace 20 instead of nitrogen.

[0050] In the oxidation section 22, the sulfur component of the target gas is oxidized at a high temperature (e.g., about 1000° C.) by oxygen supplied from the flow controller 60. Thus, sulfur dioxide (SO2) is generated. The target gas containing sulfur dioxide flows to the reduction section 23. In the reduction section 23, sulfur dioxide is reduced at a high temperature (e.g., about 850° C.) by hydrogen supplied from the flow controller 60. Thus, unstable sulfur monoxide (SO) is generated. The target gas containing sulfur monoxide flows from the downstream end 21L of the flow path forming member 21 to the first introduction section 31 of the reaction unit 30 through the delivery pipe TL0.

[0051] In the reaction unit 30, the target gas introduced from the first introduction part 31 is mixed with the ozone from the ozone generator 70 introduced from the second introduction part 32. Therefore, an excited state substance of sulfur dioxide (SO2) is generated by the reaction of sulfur monoxide and ozone. The generated sulfur dioxide is transformed into a ground state. The light generated at this time passes through the optical filter F and is detected by the photodetector 40. A chromatogram related to the sample introduced into the gas chromatograph 2 is generated based on the detection signal output from the photodetector 40.

[0052] The atmosphere in the reaction unit 30 contains ozone. Therefore, the ozone is removed from the atmosphere in the reaction unit 30 by the scrubber 80 to render it harmless, and then the ozone is exhausted to the outside of the component detection device 3 through the exhaust pipe EL.

[0053] [2] Length of the gas flow path from the redox furnace 20 to the reaction unit 30

[0054] As described above, in the component detection device 3 according to the present embodiment, the downstream end 21L of the redox furnace 20 is connected to the first introduction portion 31 of the reaction unit 30 directly or via the transfer pipe TL0 having a length of 100 cm or less.

[0055] According to this structure, when the sulfur component of the sample is detected by the component detection device 3, the sulfur monoxide generated in the oxidation-reduction furnace 20 is introduced into the reaction unit 30 in a relatively short time. As a result, the sulfur monoxide generated in the oxidation-reduction furnace 20 does not deteriorate in a manner exceeding the allowable level and does not reach the reaction unit 30. As a result, the sulfur component in the sample can be detected with high accuracy. The inventors of the present invention conducted the following tests and evaluations to confirm this effect.

[0056] The inventors of the present invention prepared an SCD in which a redox furnace and a reaction unit were connected by a delivery pipe having a length of 55 cm as the SCD involved in the embodiment. On the other hand, the inventors of the present invention prepared an SCD in which a redox furnace and a reaction unit were connected by a delivery pipe having a length of 150 cm as the SCD involved in the comparative example.

[0057] Next, the inventors of the present invention repeated the detection of sulfur content in the same sample 10 times using the SCD according to the examples and comparative examples. The following evaluations were performed based on the detection results.

[0058] First, the inventors of the present invention compared the absolute sensitivities of the SCDs according to the examples and comparative examples based on the detection results of the SCDs according to the examples and comparative examples. Figure 2 : is a graph showing the comparison results of the absolute sensitivity of the SCD involved in the embodiment and the comparative example. Figure 2 In the curve graph, the vertical axis represents absolute sensitivity and the horizontal axis represents the number of detections. Figure 2 In the figure, the circle marks correspond to the examples, and the × marks correspond to the comparative examples. Whenever the sulfur component is detected by each SCD, the peak corresponding to the sulfur component in the sample is extracted from the chromatogram generated by each SCD, and the absolute sensitivity is calculated by calculating the area value of the peak. Figure 2 , in all the tests from the first to the tenth time, the absolute sensitivity of the SCD of the embodiment is higher than the absolute sensitivity of the SCD of the comparative example.

[0059] Furthermore, the inventors of the present invention compared the S / N (signal / noise) ratios of detection signals output from the photodetectors of the two examples and the comparative example based on the detection results of the SCDs according to the examples and the comparative example. Figure 3 : is a graph showing the comparison results of the S / N ratio of the SCD involved in the embodiment and the comparative example. Figure 3 In the curve graph, the vertical axis represents the S / N ratio and the horizontal axis represents the number of detections. Figure 3 In the figure, the circle marks correspond to the examples, and the × marks correspond to the comparative examples. Whenever the sulfur component is detected by each SCD, the S / N ratio is calculated by applying the noise calculation method specified by ASTM (American Society for Testing and Materials) to the generated chromatogram. Figure 3 , in all the detections from the first to the tenth time, the S / N ratio of the detection signal obtained by using the SCD of the embodiment is higher than the S / N ratio of the detection signal obtained by using the SCD of the comparative example.

[0060] Furthermore, the inventors of the present invention compared the minimum amount of sulfur components that can be detected per unit time (hereinafter referred to as the minimum detection amount) of the two based on the detection results of the SCD according to the examples and comparative examples. Figure 4 : is a graph showing the comparison results of the minimum detection amount of SCD involved in the embodiment and the comparative example. Figure 4 In the curve graph, the vertical axis represents the minimum detection amount and the horizontal axis represents the number of detections. Figure 4 In the figure, the circle marks correspond to the examples, and the × marks correspond to the comparative examples. Whenever the sulfur component is detected by each SCD, the minimum detection amount is calculated based on the generated chromatogram. Figure 4 , in all the tests from the first to the tenth time, the minimum detection amount of the SCD of the embodiment is lower than the minimum detection amount of the SCD of the comparative example.

[0061] Furthermore, the inventors of the present invention compared the selectivity of sulfur components of the Examples and Comparative Examples based on the detection results of SCDs in both examples and comparative examples. Figure 5 : is a graph showing the results of comparison of the selectivity of the sulfur component of SCD according to the examples and comparative examples. Figure 5 In the curve graph, the vertical axis represents selectivity and the horizontal axis represents the number of detections. Figure 5 In the figure, the circle marks correspond to the examples, and the × marks correspond to the comparative examples. Whenever the sulfur component is detected by each SCD, the peaks corresponding to the sulfur component and the solvent component of the sample are extracted from the generated chromatogram, and the selectivity is calculated by dividing the area value of the peak of the sulfur component by the area value of the peak of the solvent component. Figure 5 , in all the tests from the first to the tenth time, the selectivity of the sulfur component in the SCD of the embodiment is higher than the selectivity of the sulfur component in the SCD of the comparative example.

[0062] The above test and evaluation results confirmed that the detection sensitivity, S / N ratio, minimum detection amount, and selectivity of sulfur components were improved when a 55 cm delivery tube was used compared to a 150 cm delivery tube.

[0063] [3] Multiple configuration examples of the redox furnace 20 and the reaction unit 30

[0064] In the present embodiment, in order to shorten the length of the gas flow path between the downstream end 21L of the redox furnace 20 and the first introduction portion 31 of the reaction unit 30 , the redox furnace 20 and the reaction unit 30 are accommodated in one detection device housing 3C.

[0065] Here, the detection device housing 3C of this example has a roughly rectangular parallelepiped shape and has 6 outer surfaces facing different directions. When using the component analysis system 1, one of the 6 outer surfaces of the detection device housing 3C is configured to face the user. This outer surface is called the front surface of the detection device housing 3C, and the outer surface parallel to the front surface and facing the front surface is called the rear surface. In addition, when the front surface is observed from the center of the detection device housing 3C, the outer surface to the right of the center is called the right side surface, and the outer surface to the left of the center is called the left side surface. Furthermore, the outer surface facing upward in the detection device housing 3C is called the upper surface, and the outer surface facing downward is called the lower surface.

[0066] In addition, in the following description, with the center portion inside the detection device housing 3C as a reference, the direction toward the front surface, the direction toward the rear surface, the direction toward the right side surface, the direction toward the left side surface, the direction toward the upper surface, and the direction toward the lower surface are respectively referred to as the front, rear, right, left, top, and bottom of the component detection device 3.

[0067] Next, a plurality of arrangement examples of the redox furnace 20 and the reaction unit 30 inside the detection device casing 3C will be described.

[0068] (a) First Configuration Example

[0069] Figure 6 2 is a schematic perspective view for explaining a first configuration example of the redox furnace 20 and the reaction unit 30. Figure 6 and the following Figure 7 to Figure 14 In FIG. 1 , the detection device housing 3C is indicated by a dashed line, and the redox furnace 20 and the reaction unit 30 are indicated by a solid line. In addition, three arrows indicating the front DF, the back DB, the right DR, the left DL, the upper DU, and the lower DD of the component detection device 3 are shown.

[0070] In the first configuration example, the oxidation-reduction furnace 20 and the reaction unit 30 are arranged in the front-to-back direction in the detection device housing 3C. Specifically, the oxidation-reduction furnace 20 is located in front of the reaction unit 30 DF. In addition, the oxidation-reduction furnace 20 extends in the left-right direction in such a manner that the upstream end 21U faces the right DR and the downstream end 21L faces the left DL. In this way, in the first configuration example, the long side direction of the oxidation-reduction furnace 20 intersects with the direction in which the oxidation-reduction furnace 20 and the reaction unit 30 are arranged. The first introduction part 31 of the reaction unit 30 faces the left DL. According to this configuration, the direction in which the downstream end 21L faces is consistent with the direction in which the first introduction part 31 faces, so the length of the conveying pipe TL0 can be further shortened.

[0071] Furthermore, since the upstream end 21U of the redox furnace 20 faces the right direction DR, the length of the gas flow path between the gas chromatograph 2 and the component detection device 3 can be shortened by arranging the gas chromatograph 2 on the right direction DR of the component detection device 3 .

[0072] In the first arrangement example, the downstream end 21L of the oxidation-reduction furnace 20 and the first introduction portion 31 of the reaction unit 30 are arranged in a common plane (left side surface sd in this example) perpendicular to the longitudinal direction of the oxidation-reduction furnace 20. This can further shorten the length of the transfer pipe TL0.

[0073] In the first arrangement example, the redox furnace 20 is located at the same height as the reaction unit 30. In this case, even when the atmosphere gas heated by the heat generated in the redox furnace 20 rises, the photodetector 40 ( Figure 1 ) is also not easily affected by the heat generated in the redox furnace 20. Therefore, it is possible to suppress a decrease in the detection accuracy of the photodetector 40 caused by heat and to suppress a shortening of the life.

[0074] The transport pipe TL0 is preferably provided outside the detection device housing 3C in a manner that allows for attachment and detachment relative to the downstream end 21L of the redox furnace 20 and the first introduction portion 31 of the reaction unit 30. In this case, the redox furnace 20 and the reaction unit 30 can be maintained from the outside of the detection device housing 3C. Specifically, the inside of the flow path forming member 21 can be cleaned, the flow path forming member 21 can be replaced, or the inside of the reaction unit 30 can be cleaned. Therefore, the maintainability of the component detection device 3 is improved.

[0075] Here, in the redox furnace 20, the temperature suitable for oxidation (about 1000°C) is higher than the temperature suitable for reduction (about 850°C). In this regard, in the first configuration example, since the flow path forming member 21 of the redox furnace 20 extends in the left-right direction, the oxidation section 22 and the reduction section 23 in the redox furnace 20 are arranged in the left-right direction. In this case, since the reduction section 23 is not located above the oxidation section 22 DU, the temperature environment of the reduction section 23 is not easily affected by the atmosphere gas heated around the oxidation section 22. That is, the temperature of the reduction section 23 does not rise excessively due to the temperature of the oxidation section 22. Therefore, the redox reaction in the flow path forming member 21 can be appropriately performed.

[0076] In addition, in the first configuration example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device housing 3C can also be reversed (reversed in the left and right directions) based on the vertical plane orthogonal to the left and right directions. In this case, the upstream end 21U of the redox furnace 20 faces the left DL. Thus, by configuring the gas chromatograph 2 on the left DL of the component detection device 3, the length of the gas flow path between the gas chromatograph 2 and the component detection device 3 can be shortened.

[0077] In the first arrangement example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device housing 3C may be reversed (reversed in the front-rear direction) based on a vertical plane orthogonal to the front-rear direction.

[0078] (b) Second Configuration Example

[0079] Figure 7 It is a schematic stereogram for explaining a second configuration example of the oxidation-reduction furnace 20 and the reaction unit 30. The difference between the second configuration example and the first configuration example is that the oxidation-reduction furnace 20 is arranged in a manner extending in the up-down direction. Specifically, the oxidation-reduction furnace 20 extends in the up-down direction at a position in front of the reaction unit 30 DF with the upstream end 21U facing downward DD and the downstream end 21L facing upward DU. In this example, the long side direction of the oxidation-reduction furnace 20 intersects with the direction in which the oxidation-reduction furnace 20 and the reaction unit 30 are arranged. The first inlet 31 of the reaction unit 30 faces upward DU. According to this configuration, the direction in which the downstream end 21L faces is consistent with the direction in which the first inlet 31 faces, so the length of the conveying pipe TL0 can be further shortened.

[0080] Furthermore, since the upstream end 21U of the redox furnace 20 faces downward DD, the length of the gas flow path between the gas chromatograph 2 and the component detection device 3 can be shortened by arranging the gas chromatograph 2 below DD of the component detection device 3 .

[0081] In this example, similarly to the first arrangement example, the downstream end 21L of the oxidation-reduction furnace 20 and the first introduction portion 31 of the reaction unit 30 are arranged in a common surface (in this example, the upper surface se) perpendicular to the longitudinal direction of the oxidation-reduction furnace 20. This can further shorten the length of the transport pipe TL0.

[0082] In addition, similarly to the first arrangement example, the transfer pipe TL0 is preferably provided outside the detection device housing 3C so as to be attachable and detachable to the downstream end 21L of the redox furnace 20 and the first introduction portion 31 of the reaction unit 30. This improves the maintainability of the component detection device 3.

[0083] In the second configuration example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device housing 3C may be reversed (reversed in the front-rear direction) based on a vertical plane orthogonal to the front-rear direction.

[0084] In addition, in the second configuration example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device housing 3C may also be reversed (reversed in the vertical direction) based on the horizontal plane. In this case, in the redox furnace 20, the oxidation section 22 is located above the reduction section 23. Thus, the temperature environment of the reduction section 23 is not easily affected by the atmosphere gas heated around the oxidation section 22. Therefore, the redox reaction in the flow path forming member 21 can be appropriately performed.

[0085] (c) Third Configuration Example

[0086] Figure 8 2 is a schematic perspective view for explaining a third configuration example of the redox furnace 20 and the reaction unit 30. Figure 8 As shown in FIG. 1 , the third configuration example is different from the first configuration example in that the redox furnace 20 and the reaction unit 30 are arranged in the vertical direction in the detection device housing 3C. In this example, the long side direction of the redox furnace 20 intersects with the direction in which the redox furnace 20 and the reaction unit 30 are arranged. Specifically, Figure 8 In the example of FIG. 1 , the oxidation-reduction furnace 20 is located above the reaction unit 30. In this case, the heat generated in the oxidation-reduction furnace 20 can be further reduced to the photodetector 40 ( Figure 1 ). In addition to this point, according to Figure 8 The third arrangement example shown can obtain the same effects as the first arrangement example.

[0087] In the third arrangement example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device casing 3C may be reversed (reversed in the left-right direction) with reference to a vertical plane orthogonal to the left-right direction.

[0088] In the third arrangement example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device housing 3C may be reversed (upward and downward) based on the horizontal plane. That is, the positions of the redox furnace 20 and the reaction unit 30 may be interchanged.

[0089] (d) Fourth Configuration Example

[0090] Fig. 9 3C is a schematic perspective view for explaining a fourth configuration example of the oxidation-reduction furnace 20 and the reaction unit 30. The fourth configuration example is different from the second configuration example in that the oxidation-reduction furnace 20 and the reaction unit 30 are arranged in the left-right direction in the detection device housing 3C. In this example, the long side direction of the oxidation-reduction furnace 20 intersects with the direction in which the oxidation-reduction furnace 20 and the reaction unit 30 are arranged. Specifically, the oxidation-reduction furnace 20 is located on the right DR of the reaction unit 30. In this example, the same effect as the second configuration example can be obtained.

[0091] In the fourth configuration example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device housing 3C may be reversed (reversed in the left-right direction) based on a vertical plane orthogonal to the left-right direction.

[0092] In the fourth arrangement example, the positions of the redox furnace 20 and the reaction unit 30 in the detection device casing 3C may be reversed (reversed in the vertical direction) with respect to the horizontal plane.

[0093] (e) Fifth Configuration Example

[0094] Fig.10 It is a schematic stereogram for explaining the fifth configuration example of the oxidation-reduction furnace 20 and the reaction unit 30. The difference between the fifth configuration example and the fourth configuration example is that the oxidation-reduction furnace 20 is arranged in a manner extending in the left-right direction. In this example, the direction in which the oxidation-reduction furnace 20 and the reaction unit 30 are arranged is parallel to and consistent with the long side direction of the oxidation-reduction furnace 20. Moreover, in this example, the reaction unit 30 is arranged in a manner in which the first introduction part 31 is opposite to the downstream end 21L of the oxidation-reduction furnace 20. According to this structure, the length of the conveying pipe TL0 can be further shortened. In addition, the positions of the oxidation-reduction furnace 20 and the reaction unit 30 can also be interchanged.

[0095] (f) Sixth Configuration Example

[0096] Fig.11It is a schematic stereogram for explaining the sixth configuration example of the oxidation-reduction furnace 20 and the reaction unit 30. The difference between the sixth configuration example and the third configuration example is that the oxidation-reduction furnace 20 is arranged in a manner extending in the up-down direction. In this example, the direction in which the oxidation-reduction furnace 20 and the reaction unit 30 are arranged is parallel to and consistent with the long side direction of the oxidation-reduction furnace 20. In addition, in this example, the reaction unit 30 is arranged in a manner parallel to the oxidation-reduction furnace 20 in the up-down direction, and the first inlet 31 is opposite to the downstream end 21L of the oxidation-reduction furnace 20. According to this structure, the length of the conveying pipe TL0 can be further shortened. In addition, the positions of the oxidation-reduction furnace 20 and the reaction unit 30 can also be interchanged.

[0097] (g) Seventh Configuration Example

[0098] Fig.12 2 is a schematic perspective view for explaining a seventh configuration example of the oxidation-reduction furnace 20 and the reaction unit 30. The seventh configuration example is different from the fifth configuration example in that the downstream end 21L of the oxidation-reduction furnace 20 is directly connected to the first introduction part 31 of the reaction unit 30. According to this structure, sulfur monoxide generated in the oxidation-reduction furnace 20 is introduced into the reaction unit 30 in a manner that does not deteriorate. In addition, the positions of the oxidation-reduction furnace 20 and the reaction unit 30 may also be interchanged.

[0099] (h) Eighth Configuration Example

[0100] Fig.13 2 is a schematic perspective view for explaining an eighth configuration example of the redox furnace 20 and the reaction unit 30. The eighth configuration example differs from the sixth configuration example in that the downstream end 21L of the redox furnace 20 is directly connected to the first introduction portion 31 of the reaction unit 30. According to this structure, sulfur monoxide generated in the redox furnace 20 is introduced into the reaction unit 30 in a manner that does not deteriorate. In addition, the positions of the redox furnace 20 and the reaction unit 30 may also be interchanged.

[0101] (i) Others

[0102] In the first to fourth arrangement examples described above, the first introduction portion 31 of the reaction unit 30 may face a direction different from the direction in which the downstream end 21L of the oxidation-reduction furnace 20 faces. In this case, the first introduction portion 31 is preferably provided facing the oxidation-reduction furnace 20 . Fig.14 It is a schematic perspective view showing a state in which the first introduction part 31 is provided so as to face the redox furnace 20 in the third arrangement example.

[0103] exist Fig.14In the example of , the reaction unit 30 is arranged below the oxidation-reduction furnace 20. In addition, in the reaction unit 30, the first introduction part 31 is provided so as to face the oxidation-reduction furnace 20. Thus, compared with the case where the first introduction part 31 is not provided so as to face the oxidation-reduction furnace 20, the length of the transport pipe TL0 can be shortened.

[0104] In addition, in this example, the positions of the redox furnace 20 and the reaction unit 30 may be interchanged. In addition, in this example, the delivery pipe TL0 is preferably provided outside the detection device housing 3C in a manner that allows attachment and detachment relative to the downstream end 21L of the redox furnace 20. Thus, the redox furnace 20 can be maintained.

[0105] In the first to eighth configuration examples described above, the oxidation-reduction furnace 20 is provided in the detection device housing 3C so as to extend in the vertical direction or in the horizontal direction, but the oxidation-reduction furnace 20 may also be provided in the detection device housing 3C so as to extend in the front-rear direction. In this case, the dimensions of the detection device housing 3C in the horizontal direction and in the vertical direction can be reduced.

[0106] [4] Effect

[0107] (a) In the component detection device 3 according to the present embodiment, the oxidation-reduction furnace 20 and the reaction unit 30 are housed in one detection device housing 3C, so that the distance between the oxidation-reduction furnace 20 and the reaction unit 30 can be shortened. As a result, the downstream end 21L of the oxidation-reduction furnace 20 and the first introduction part 31 of the reaction unit 30 can be connected to each other or connected via a delivery pipe TL0 having a shorter length. In this case, the delivery time of sulfur monoxide can be reduced so that most of the sulfur monoxide reduced in the oxidation-reduction furnace 20 does not deteriorate before reaching the reaction unit 30. Therefore, the chemical reaction required for detecting the sulfur component can be stably generated in the reaction unit 30. As a result, the sulfur component separated by the separation column 12 can be detected with high accuracy.

[0108] (b) In the redox furnace 20, when a large amount of solvent (organic matter) is introduced from the separation column 12, compounds such as OH radicals and CH radicals are sometimes generated due to the solvent. The OH radicals and CH radicals emit light due to the reaction with ozone in the reaction unit 30. The wavelength of these lights is close to the wavelength of the light generated by the reaction of sulfur monoxide and ozone. Therefore, the light generated by the reaction of OH radicals and CH radicals passes through the optical filter F and is detected by the photodetector 40. Therefore, when the OH radicals and CH radicals are more than the sulfur monoxide reaching the reaction unit 30, the S / N ratio of the SCD decreases.

[0109] In addition, the inventors of the present invention simulated the degree of deterioration per unit time of sulfur monoxide and OH radicals generated by the redox furnace 20. As a result, it was confirmed that the degree of deterioration of sulfur monoxide was greater than that of OH radicals. That is, it was confirmed that sulfur monoxide was more easily deteriorated during the transportation to the reaction unit than OH radicals generated by the solvent in the redox furnace. This means that the longer the transportation time from the redox furnace 20 to the reaction unit 30, the lower the selectivity of the sulfur component.

[0110] In regard to these points, according to the component detection device 3 of the present embodiment, the transportation time from the redox furnace 20 to the reaction unit 30 becomes sufficiently short. Therefore, it is possible to suppress the deterioration of sulfur monoxide during transportation, thereby suppressing the decrease in the S / N ratio of sulfur detection in the SCD and the decrease in the selectivity of the sulfur component. As a result, the sulfur component in the sample can be detected with high accuracy.

[0111] [5] Other Implementations

[0112] (a) In the above embodiment, in order to shorten the gas flow path from the oxidation-reduction furnace 20 to the reaction unit 30, the oxidation-reduction furnace 20 and the reaction unit 30 are contained in one detection device housing 3C, but the embodiment is not limited to this. As long as the length of the gas flow path from the oxidation-reduction furnace 20 to the reaction unit 30 is less than 100 cm, the oxidation-reduction furnace 20 and the reaction unit 30 may also be contained in different housings. In this case, by making the length of the gas flow path from the oxidation-reduction furnace 20 to the reaction unit 30 less than 100 cm, the same effect as in the above embodiment can be obtained.

[0113] (b) In the above embodiment, an example in which the component detection device 3 is an SCD is described. However, the component detection device 3 according to the present embodiment can also be applied to a nitrogen chemiluminescence detector (NCD: Nitrogen Chemiluminesence Detector) that detects nitrogen components in a sample.

[0114] In this case, the nitrogen component in the sample is oxidized and reduced in the redox furnace 20, thereby generating nitric oxide. The generated nitric oxide is introduced into the reaction unit 30 through the above-mentioned transport pipe TL0 or directly. Thus, it is possible to suppress the deterioration of nitric oxide when it is transported from the redox furnace 20 to the reaction unit 30. As a result, the nitrogen component in the sample can be detected with high accuracy.

[0115] In addition, when the component detection device 3 is applied to NCD, it is possible to Figure 1The specific wavelength range of the optical filter F is determined to include the wavelength of light generated by the reaction of ozone and nitric oxide (light generated when nitrogen dioxide changes to the ground state).

[0116] (c) In the above embodiment, the redox furnace 20, the reaction unit 30, the photodetector 40, the control unit 50, the flow controller 60, the ozone generator 70, the scrubber 80, and the pump 90 are contained in one detection device housing 3C, but the embodiment is not limited thereto. At least a part of the control unit 50, the flow controller 60, the ozone generator 70, the scrubber 80, and the pump 90 may also be disposed outside the detection device housing 3C.

[0117] [6] Correspondence between the features of the claims and the parts of the embodiments

[0118] Hereinafter, examples of correspondence between the technical features of the claims and the parts of the embodiments will be described. In the above-mentioned embodiment, the gas flow path formed by the flow path forming member 21 is an example of the first flow path, the first introduction part 31 of the reaction unit 30 is an example of the introduction part of the reaction unit, the detection device housing 3C is an example of a retaining member, the downstream end 21L of the flow path forming member 21 is an example of the downstream end of the first flow path, and the gas flow path formed by the delivery tube TL0 is an example of the second flow path.

[0119] In addition, the left direction DL or the right direction DR is an example of a first direction and one direction, the front DF or the back DB is an example of a second direction, and the right side surface sc, the left side surface sd, or the upper surface se is an example of a common surface.

[0120] As each technical feature of the claims, other various elements having the structures or functions described in the claims can also be used.

[0121] [7] Method

[0122] It will be understood by those skilled in the art that the above-described multiple exemplary embodiments are specific examples of the following aspects.

[0123] (Item 1) A component analysis system according to one embodiment comprises:

[0124] a gas chromatograph having a separation column; and

[0125] Composition detection device,

[0126] Wherein, the component detection device comprises:

[0127] a redox furnace having a first flow path for flowing a gas containing the sample component separated by the separation column, the redox furnace being configured to oxidize and reduce the sample component in the gas flowing through the first flow path;

[0128] a reaction unit having an introduction portion for a gas containing the reduced sample component, the reaction unit being configured to cause the sample component introduced from the introduction portion to undergo a chemical reaction accompanied by light emission;

[0129] a light detector for detecting light generated in the reaction unit; and

[0130] a holding member for holding the redox furnace and the reaction unit,

[0131] The downstream end of the first flow channel is connected to the introduction portion of the reaction unit directly or via a second flow channel.

[0132] In this component analysis system, a component detection device is used to detect the sample components separated by a separation column. In the component detection device, the redox furnace and the reaction unit are held as one by a holding member, so that the distance between the redox furnace and the reaction unit can be shortened. Thus, the downstream end of the first flow path can be directly connected to the introduction portion of the reaction unit or connected via a second flow path with a relatively short length. In this case, the time required to reach the reaction unit from the redox furnace can be reduced so that the sample components reduced in the redox furnace will not deteriorate before reaching the reaction unit. Thus, the chemical reaction required for detecting the sample components can be stably generated in the reaction unit. As a result, the sample components separated by the separation column can be detected with high accuracy.

[0133] (Second Item) In the component analysis system described in the first Item, it may be that:

[0134] The chemical reaction is a chemical reaction in which, when sulfur is included in the sample component separated by the separation column, the sulfur component reduced by the oxidation-reduction furnace is excited by ozone.

[0135] When the sample contains sulfur, sulfur monoxide generated in the redox furnace reacts with ozone in the reaction unit to generate light. Compared with other compounds generated by the solvent in the redox furnace, sulfur monoxide is more likely to deteriorate during the transportation to the reaction unit. However, according to the above structure, since sulfur monoxide is suppressed from deteriorating during the transportation to the reaction unit, the sulfur component in the sample can be detected with high accuracy.

[0136] (Item 3) The component analysis system according to Item 1 or Item 2 may also be:

[0137] The redox furnace is formed such that the first flow path extends from the upstream end to the downstream end along a first direction,

[0138] The reaction unit is arranged in parallel with the redox furnace in a second direction intersecting the first direction.

[0139] The downstream end of the first flow channel and the introduction portion of the reaction unit are connected via the second flow channel.

[0140] According to the above-described configuration, it is possible to suppress an increase in size of the component detection device in the first direction.

[0141] (Item 4) The component analysis system according to Item 3 may also be:

[0142] The reaction unit is arranged such that the introduction portion faces the first direction.

[0143] According to the above configuration, the second flow channel connecting the downstream end of the first flow channel and the introduction portion of the reaction unit can be shortened.

[0144] (Item 5) The component analysis system according to Item 4 may also be:

[0145] The redox furnace and the reaction unit are arranged so that the downstream end of the first flow path and the introduction portion of the reaction unit are located in a common plane orthogonal to the first direction.

[0146] In this case, the second flow path can be further shortened.

[0147] (Item 6) The component analysis system according to Item 1 or Item 2 may also be:

[0148] The downstream end of the first flow path is connected to the introduction portion of the reaction unit via the second flow path.

[0149] The second flow channel is provided outside the holding member so as to be attachable to and detachable from the downstream end of the first flow channel and the introduction portion of the reaction unit.

[0150] In this case, by detaching the second flow channel from the downstream end of the first flow channel and the introduction portion of the reaction unit outside the holding member, maintenance of the redox furnace and the reaction unit can be performed from outside the holding member.

[0151] (Item 7) The component analysis system according to Item 1 or Item 2 may also be:

[0152] The oxidation-reduction furnace is formed such that the first flow path extends from an upstream end to a downstream end in one direction,

[0153] The reaction unit is arranged in parallel with the redox furnace in the one direction, and the introduction portion is arranged to face the downstream end of the first flow path.

[0154] In this case, the flow path of the sample component from the redox furnace to the reaction unit can be further shortened.

[0155] (Item 8) The component analysis system according to Item 1 or Item 2 may also be:

[0156] The downstream end of the first flow path is connected to the introduction portion of the reaction unit via the second flow path.

[0157] The length of the second flow path is 100 cm or less.

[0158] Thus, the sample components reduced in the redox furnace will not be degraded beyond the permissible level before reaching the reaction unit. Thus, the sample components separated by the separation column can be detected with high accuracy.

[0159] (Item 9) A component detection device according to another embodiment may also be used together with a gas chromatograph having a separation column, wherein the component detection device comprises:

[0160] a redox furnace having a first flow path for flowing a gas containing the sample component separated by the separation column, wherein the redox furnace is used to oxidize and reduce the sample component in the gas flowing through the first flow path;

[0161] a reaction unit having an introduction portion for a gas containing the reduced sample component, the reaction unit being configured to cause the sample component introduced from the introduction portion to undergo a chemical reaction accompanied by light emission;

[0162] a light detector for detecting light generated in the reaction unit; and

[0163] a holding member for holding the redox furnace and the reaction unit,

[0164] The downstream end of the first flow path is directly connected to the introduction part of the reaction unit or connected via a second flow path.

[0165] In this component detection device, the redox furnace and the reaction unit are held as one by a holding member, so the distance between the redox furnace and the reaction unit can be shortened. Thus, the downstream end of the first flow path can be directly connected to the introduction portion of the reaction unit or connected via a second flow path with a relatively short length. In this case, the time required to reach the reaction unit from the redox furnace can be reduced so that the sample component reduced in the redox furnace will not deteriorate before reaching the reaction unit. Thus, the chemical reaction required for detecting the sample component can be stably generated in the reaction unit. As a result, the sample component separated by the separation column can be detected with high accuracy.

[0166] (Item 10) A component analysis system according to another embodiment may include:

[0167] a gas chromatograph having a separation column; and

[0168] Composition detection device,

[0169] Wherein, the component detection device comprises:

[0170] a redox furnace having a first flow path for flowing a gas containing the sample component separated by the separation column, the redox furnace being configured to oxidize and reduce the sample component in the gas flowing through the first flow path;

[0171] a reaction unit having an introduction portion for a gas containing the reduced sample component, the reaction unit causing the sample component introduced from the introduction portion to undergo a chemical reaction accompanied by light emission; and

[0172] a light detector for detecting light generated in the reaction unit,

[0173] The downstream end of the first flow path is connected to the introduction portion of the reaction unit or is connected via a second flow path having a length of 100 cm or less.

[0174] In this component analysis system, a component detection device is used to detect the sample components separated by the separation column. In the component detection device, the downstream end of the first flow path is connected to the introduction part of the reaction unit or is connected via a second flow path having a length of less than 100 cm. In this case, the time required to reach the reaction unit from the redox furnace can be reduced so that the sample components reduced in the redox furnace will not deteriorate in a manner exceeding the allowed degree before reaching the reaction unit. Therefore, the chemical reaction required for detecting the sample components can stably occur in the reaction unit. As a result, the sample components separated by the separation column can be detected with high precision.

[0175] (Item 11) A component detection device according to another embodiment may be used together with a gas chromatograph having a separation column, wherein the component detection device comprises:

[0176] a redox furnace having a first flow path for flowing a gas containing the sample component separated by the separation column, the redox furnace being configured to oxidize and reduce the sample component in the gas flowing through the first flow path;

[0177] a reaction unit having an introduction portion for a gas containing the reduced sample component, the reaction unit causing the sample component introduced from the introduction portion to undergo a chemical reaction accompanied by light emission; and

[0178] a light detector for detecting light generated in the reaction unit,

[0179] The downstream end of the first flow path is connected to the introduction portion of the reaction unit or is connected via a second flow path having a length of 100 cm or less.

[0180] In the component detection device, the downstream end of the first flow path is connected to the introduction part of the reaction unit or is connected via a second flow path having a length of less than 100 cm. In this case, the time required to reach the reaction unit from the redox furnace can be reduced so that the sample component reduced in the redox furnace will not deteriorate in a manner exceeding the allowed degree before reaching the reaction unit. Thus, the chemical reaction required for detecting the sample component can be stably generated in the reaction unit. As a result, the sample component separated by the separation column can be detected with high accuracy.

Claims

1. A component analysis system comprising: a gas chromatograph having a separation column; and Composition detection device, in, The separation column is contained in a column housing having a plurality of outer surfaces. Wherein, the component detection device comprises: a redox furnace having a first flow path for flowing a gas containing the sample component separated by the separation column, the redox furnace being configured to oxidize and reduce the sample component in the gas flowing through the first flow path; a reaction unit having an introduction portion for a gas containing the reduced sample component, the reaction unit being configured to cause the sample component introduced from the introduction portion to undergo a chemical reaction accompanied by light emission; a light detector for detecting light generated in the reaction unit; and a holding member for holding the redox furnace and the reaction unit, The downstream end of the first flow path is directly connected to the introduction part of the reaction unit or connected via a second flow path. The redox furnace and the reaction unit are held by the holding member so as to be arranged facing the same outer surface among the plurality of outer surfaces of the column housing. The long side direction of the redox furnace intersects with the direction in which the redox furnace and the reaction unit are arranged, or the direction in which the redox furnace and the reaction unit are arranged is parallel to and consistent with the long side direction of the redox furnace.

2. The component analysis system according to claim 1, characterized in that The chemical reaction is a chemical reaction in which, when sulfur is included in the sample component separated by the separation column, the sulfur component reduced by the oxidation-reduction furnace is excited by ozone.

3. The component analysis system according to claim 1 or 2, characterized in that: The redox furnace is formed such that the first flow path extends from the upstream end to the downstream end along a first direction, The reaction unit is arranged in parallel with the redox furnace in a second direction intersecting the first direction. The downstream end of the first flow channel and the introduction portion of the reaction unit are connected via the second flow channel.

4. The component analysis system according to claim 3, characterized in that The reaction unit is arranged such that the introduction portion faces the first direction.

5. The component analysis system according to claim 4, characterized in that The redox furnace and the reaction unit are arranged so that the downstream end of the first flow path and the introduction portion of the reaction unit are located in a common plane orthogonal to the first direction.

6. The component analysis system according to claim 1 or 2, characterized in that: The downstream end of the first flow path is connected to the introduction portion of the reaction unit via the second flow path. The second flow channel is provided outside the holding member so as to be attachable to and detachable from the downstream end of the first flow channel and the introduction portion of the reaction unit.

7. The component analysis system according to claim 1 or 2, characterized in that: The oxidation-reduction furnace is formed such that the first flow path extends from the upstream end to the downstream end in one direction, The reaction unit is arranged in parallel with the redox furnace in the one direction, and the introduction portion is arranged to face the downstream end of the first flow path.

8. The component analysis system according to claim 1 or 2, characterized in that: The downstream end of the first flow path is connected to the introduction portion of the reaction unit via the second flow path. The length of the second flow path is 100 cm or less.

9. A component detection device for use with a gas chromatograph having a separation column, the separation column being housed in a column housing having a plurality of outer surfaces, the component detection device comprising: a redox furnace having a first flow path for flowing a gas containing the sample component separated by the separation column, the redox furnace being configured to oxidize and reduce the sample component in the gas flowing through the first flow path; a reaction unit having an introduction portion for a gas containing the reduced sample component, the reaction unit being configured to cause the sample component introduced from the introduction portion to undergo a chemical reaction accompanied by light emission; a light detector for detecting light generated in the reaction unit; as well as a holding member for holding the redox furnace and the reaction unit, The downstream end of the first flow path is directly connected to the introduction part of the reaction unit or connected via a second flow path. The redox furnace and the reaction unit are held by the holding member so as to be arranged facing the same outer surface among the plurality of outer surfaces of the column housing. The long side direction of the redox furnace intersects with the direction in which the redox furnace and the reaction unit are arranged, or the direction in which the redox furnace and the reaction unit are arranged is parallel to and consistent with the long side direction of the redox furnace.

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