CN111562336A - Hydrogen flame ionization detector with hydrogenation effect - Google Patents
Hydrogen flame ionization detector with hydrogenation effect Download PDFInfo
- Publication number
- CN111562336A CN111562336A CN202010546942.5A CN202010546942A CN111562336A CN 111562336 A CN111562336 A CN 111562336A CN 202010546942 A CN202010546942 A CN 202010546942A CN 111562336 A CN111562336 A CN 111562336A
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- CN
- China
- Prior art keywords
- gas
- metal liner
- nozzle
- ionization detector
- quartz wool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 34
- 239000001257 hydrogen Substances 0.000 title claims abstract description 27
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000012494 Quartz wool Substances 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000012159 carrier gas Substances 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 6
- 230000010287 polarization Effects 0.000 abstract description 6
- 239000001307 helium Substances 0.000 abstract description 5
- 229910052734 helium Inorganic materials 0.000 abstract description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/68—Flame ionisation detectors
Abstract
The invention discloses a hydrogen flame ionization detector with a hydrogenation effect, which comprises a gas separation column, a hydrogenation catalyst, quartz wool, a nozzle, a polarization electrode, a collector, a metal liner tube, a shell and a fixed base, wherein the shell is arranged on the fixed base, the collector is arranged at the upper part in the shell, the polarization electrode is arranged at the middle part, the nozzle is arranged at the lower part in the shell, the nozzle is positioned on the fixed base, a gas through hole communicated with a nozzle cavity is formed in the fixed base, the metal liner tube is arranged in the gas through hole, the hydrogenation catalyst is filled at the upper part of the metal liner tube, the top and the bottom of the hydrogenation catalyst are respectively connected with the quartz wool, and the gas separation column extends into the lower part of the metal. The hydrogen flame ionization detector can detect carbon monoxide and carbon dioxide with low concentration in gas, can avoid replacing the expensive helium ionization detector, and simultaneously does not need to add a converter and temperature control equipment thereof.
Description
Technical Field
The invention relates to the technical field of gas chromatographs, in particular to a hydrogen flame ionization detector of a gas chromatograph.
Background
The hydrogen Flame Ionization Detector (FID) is a detector widely applied in the existing gas chromatograph, and has the advantages of high sensitivity, low detection limit and the like. In gas detection, it is often desirable to detect low concentrations of carbon monoxide and carbon dioxide in the gas. Since the existing FID cannot detect these two substances, the common solution is to replace the FID with a helium ionization detector, or to add a reformer and reformer temperature control device. Helium ionization detectors are expensive, typically in the tens of thousands of dollars. The addition of the converter increases the dead volume of the sample during analysis, and affects the accuracy of the analysis.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a hydrogen flame ionization detector with hydrogenation effect, which can detect low concentrations of carbon monoxide and carbon dioxide in a gas, and can avoid replacing an expensive helium ionization detector without adding a reformer and a temperature control device thereof.
In order to achieve the purpose, the technical scheme of the application is as follows: the utility model provides a hydrogen flame ionization detector with hydrogenation effect, includes gas separation post, hydrogenation catalyst, quartz wool, nozzle, polarize utmost point, collector, metal liner pipe, casing and unable adjustment base, install the casing above the unable adjustment base, upper portion in the casing is equipped with the collector, and the middle part is equipped with the polarize utmost point, and the lower part is equipped with the nozzle, the nozzle is located above the unable adjustment base, open the gas through-hole who communicates with the nozzle cavity in the unable adjustment base, be equipped with the metal liner pipe in the gas through-hole, it has the hydrogenation catalyst to pack on metal liner pipe upper portion, hydrogenation catalyst top and bottom are connected with the quartz wool respectively, the gas separation post stretches into metal liner pipe lower part.
Further, the gas separation column is a capillary column, the capillary column extends into the metal liner tube and is positioned below the quartz wool at the bottom, the metal liner tube which is not positioned in the fixed base is connected with the hydrogen inlet pipeline, and carrier gas and sample gas are introduced into the capillary column, wherein the carrier gas is inert gas.
Further, the gas separation column is a stainless steel packed column, the stainless steel packed column extends into the metal liner tube and is positioned below the quartz wool at the bottom, and hydrogen and sample gas are introduced into the stainless steel packed column.
Furthermore, the fixed base comprises a horizontal seat and a vertical seat which are vertically connected, and a cylinder and a nozzle are connected on the horizontal seat.
Furthermore, one side of the top of the vertical seat is connected with a nitrogen inlet pipeline which is communicated with the gas through hole.
Furthermore, the polarized electrode is positioned right above the nozzle, and the collector is positioned right above the polarized electrode.
Furthermore, one side of the bottom of the shell is connected with an air inlet pipeline, and the top of the shell is connected with an exhaust pipeline.
Furthermore, the quartz wool at the top and the bottom of the hydrogenation catalyst is silanized quartz wool, and the outer wall of the silanized quartz wool is tightly attached to the inner wall of the metal liner tube.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects: this application hydrogen flame ionization detector, simple structure, easy maintenance change, saving manufacturing cost can detect out the carbon monoxide and the carbon dioxide of low concentration in the gas to can avoid changing the helium ionization detector that the price is expensive, also need not add the reborner and its temperature control equipment simultaneously, reduce the dead volume, improve the accuracy of analysis.
Drawings
FIG. 1 is a schematic view showing the structure of a hydrogen flame ionization detector in example 1;
FIG. 2 is a schematic view showing the structure of a hydrogen flame ionization detector according to example 2;
the sequence numbers in the figures illustrate: 1. the device comprises a collector, 2, a shell, 3, a polarizing electrode, 4, a nozzle, 5, silanized quartz cotton, 6, a hydrogenation catalyst, 7, air, 8, nitrogen, 9, a fixed base, 10, a metal liner tube, 11, hydrogen, 12, a stainless steel packed column, 13, a capillary column, 14 and a direct current power supply.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples: the present application is further described by taking this as an example.
Example 1
As shown in fig. 1, the present embodiment provides a hydrogen flame ionization detector with a hydrogenation effect, which includes a capillary column, a hydrogenation catalyst, quartz wool, a nozzle, a polarization electrode, a collector, a metal liner tube, a housing, and a fixed base, where the fixed base is provided with the housing, the collector is disposed at an upper portion in the housing, the polarization electrode is disposed at a middle portion, the nozzle is disposed at a lower portion, the nozzle is located on the fixed base, the fixed base is provided with a gas through hole communicated with a nozzle cavity, the metal liner tube is disposed in the gas through hole, the hydrogenation catalyst is filled at an upper portion of the metal liner tube, a top portion and a bottom portion of the hydrogenation catalyst are respectively connected with the quartz wool, the capillary column extends into the metal liner tube and is located below the quartz wool at the bottom portion, the metal liner tube not located in the fixed base is connected with a hydrogen inlet pipeline, the carrier gas is inert gas, and the polarization electrode and the collector are connected with a direct current power supply.
Air, nitrogen and hydrogen are introduced into the FID, after the FID is ignited, burning flame is generated at the nozzle, carrier gas and sample gas enter the metal liner tube from the capillary column, the hydrogen also enters the metal liner tube, the silanized quartz cotton at the bottom contacts a hydrogenation catalyst, the hydrogenation catalyst converts trace carbon monoxide and carbon dioxide contained in the carrier gas and the sample gas into methane, the methane is sprayed out from the nozzle through the silanized quartz cotton at the top, carbocation moves upwards in an electric field under the action of a polarizer, and the carbocation trapped by the collector flows through a signal amplifier and is conveyed to a data acquisition system.
Example 2
As shown in fig. 2, the present embodiment provides a hydrogen flame ionization detector with hydrogenation effect, which comprises a stainless steel packed column, a hydrogenation catalyst, quartz wool, a nozzle, a polarization electrode, a collector, a metal liner tube, a housing, and a fixed base, wherein the housing is installed on the fixed base, a collector is arranged at the upper part in the shell, a polarizing electrode is arranged at the middle part, a nozzle is arranged at the lower part, the nozzle is positioned on the fixed base, a gas through hole communicated with the nozzle cavity is arranged in the fixed base, a metal liner tube is arranged in the gas through hole, the upper part of the metal liner tube is filled with a hydrogenation catalyst, the top and the bottom of the hydrogenation catalyst are respectively connected with quartz wool, the stainless steel packed column extends into the metal liner tube and is positioned below the quartz wool at the bottom, hydrogen and sample gas are introduced into the stainless steel packed column, and the polarized electrode and the collector are connected with a direct current power supply.
Air and nitrogen are introduced into the FID, after the FID is ignited, burning flame is generated at the nozzle, hydrogen and sample gas enter the metal liner tube from the stainless steel packed column, the hydrogen and the sample gas are contacted with a hydrogenation catalyst through silanized quartz cotton at the bottom, the hydrogenation catalyst converts carrier gas, trace carbon monoxide and carbon dioxide contained in the sample gas into methane, the methane is sprayed out through the silanized quartz cotton at the top, carbocation moves upwards in an electric field under the action of a polarizing electrode, and carbocation trapped by the collector electrode flows through a signal amplifier and is conveyed to a data acquisition system.
The above description is only for the purpose of creating a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. The utility model provides a hydrogen flame ionization detector with hydrogenation effect, includes gas separation post, hydrogenation catalyst, quartz wool, nozzle, polarize utmost point, collector, metal liner pipe, casing and unable adjustment base, install the casing above the unable adjustment base, upper portion in the casing is equipped with the collector, and the middle part is equipped with the polarize utmost point, and the lower part is equipped with the nozzle, the nozzle is located above the unable adjustment base, its characterized in that, set up the gas through-hole with nozzle cavity intercommunication in the unable adjustment base, be equipped with the metal liner pipe in the gas through-hole, it has the hydrogenation catalyst to fill on metal liner pipe upper portion, hydrogenation catalyst top and bottom are connected with the quartz wool respectively, the gas separation post stretches into metal liner pipe lower part.
2. The hydrogen flame ionization detector with hydrogenation effect as claimed in claim 1, wherein the gas separation column is a capillary column, the capillary column extends into the metal liner tube and is located below the quartz wool at the bottom, the metal liner tube not located in the fixed base is connected with the hydrogen gas inlet pipeline, and the carrier gas and the sample gas are introduced into the capillary column.
3. The hydrogen flame ionization detector with hydrogenation effect as claimed in claim 1, wherein the gas separation column is a stainless steel packed column, the stainless steel packed column extends into the metal liner tube and is located below the quartz wool at the bottom, and hydrogen gas and sample gas are introduced into the stainless steel packed column.
4. The detector of claim 1, wherein the fixed base comprises a horizontal base and a vertical base which are vertically connected, and the cylinder and the nozzle are connected to the horizontal base.
5. The hydrogen flame ionization detector with hydrogenation effect as claimed in claim 4, wherein a nitrogen gas inlet pipeline is connected to one side of the top of the vertical seat, and the nitrogen gas inlet pipeline is communicated with the gas through hole.
6. The detector of claim 1, wherein the polarizer is located directly above the nozzle, and the collector is located directly above the polarizer.
7. The detector of claim 1, wherein an air inlet line is connected to one side of the bottom of the housing, and an exhaust line is connected to the top of the housing.
8. The hydrogen flame ionization detector with hydrogenation effect of claim 1, wherein the quartz wool at the top and bottom of the hydrogenation catalyst is silanized quartz wool, and the outer wall of the silanized quartz wool is tightly attached to the inner wall of the metal liner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010546942.5A CN111562336A (en) | 2020-06-16 | 2020-06-16 | Hydrogen flame ionization detector with hydrogenation effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010546942.5A CN111562336A (en) | 2020-06-16 | 2020-06-16 | Hydrogen flame ionization detector with hydrogenation effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111562336A true CN111562336A (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010546942.5A Pending CN111562336A (en) | 2020-06-16 | 2020-06-16 | Hydrogen flame ionization detector with hydrogenation effect |
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| Country | Link |
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| CN (1) | CN111562336A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324708A (en) * | 2021-12-20 | 2022-04-12 | 杭州谱育科技发展有限公司 | FID detector and method based on catalytic ignition technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495161A (en) * | 2011-11-11 | 2012-06-13 | 河南中分仪器股份有限公司 | Special flame ionization detector for analyzing dissolved gas in insulating oil |
| CN105486784A (en) * | 2016-01-25 | 2016-04-13 | 潍坊学院 | Hydrogen flame ionization detector and working method thereof |
| CN206450639U (en) * | 2016-12-23 | 2017-08-29 | 北京雪迪龙科技股份有限公司 | Flame ionization ditector |
| CN108195980A (en) * | 2018-01-03 | 2018-06-22 | 甘肃政法学院 | Trace amounts of CO x analysis gas-chromatography packed columns for fid detector and preparation method thereof |
| CN108333284A (en) * | 2018-02-08 | 2018-07-27 | 北京雪迪龙科技股份有限公司 | The method and its system of carbon compound are detected based on catalytic conversion technique |
-
2020
- 2020-06-16 CN CN202010546942.5A patent/CN111562336A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102495161A (en) * | 2011-11-11 | 2012-06-13 | 河南中分仪器股份有限公司 | Special flame ionization detector for analyzing dissolved gas in insulating oil |
| CN105486784A (en) * | 2016-01-25 | 2016-04-13 | 潍坊学院 | Hydrogen flame ionization detector and working method thereof |
| CN206450639U (en) * | 2016-12-23 | 2017-08-29 | 北京雪迪龙科技股份有限公司 | Flame ionization ditector |
| CN108195980A (en) * | 2018-01-03 | 2018-06-22 | 甘肃政法学院 | Trace amounts of CO x analysis gas-chromatography packed columns for fid detector and preparation method thereof |
| CN108333284A (en) * | 2018-02-08 | 2018-07-27 | 北京雪迪龙科技股份有限公司 | The method and its system of carbon compound are detected based on catalytic conversion technique |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324708A (en) * | 2021-12-20 | 2022-04-12 | 杭州谱育科技发展有限公司 | FID detector and method based on catalytic ignition technology |
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Application publication date: 20200821 |