Apparatus, System and Method for Carbon Isotope Analysis of Altered Carbonates

Abstract

This invention provides an apparatus, system, and method for analyzing altered carbonate carbon isotopes. The apparatus includes: an enrichment component comprising at least one enrichment tube having an enrichment section; and a freezing component comprising a container filled with a refrigerant. The enrichment section is completely immersed in the refrigerant to freeze the target gas generated by sample decomposition within the enrichment section to a target concentration. Based on the technical solution of this invention, analysis of low-content altered carbonate carbon isotopes can be achieved; it can also simultaneously acquire multiple sets of samples required for altered carbonate carbon isotope analysis, saving time for detecting large quantities of altered carbonate carbon isotopes. Furthermore, the operation is simple, reducing analytical costs and providing a reliable technical means for the application of geochemical exploration technology.

Description

Technical Field

[0001] This invention relates to the field of surface oil and gas geochemical exploration technology, and particularly to an altered carbonate carbon isotope analysis device, system and method. Background Technology

[0002] Altered carbonates are unique carbonates formed by the reaction of carbon dioxide generated from the micro-leaking of hydrocarbons from underground oil and gas reservoirs to the surface with surface alkaline earth metal cations and non-alkali metal cations. Altered carbonates are a cumulative effect of hydrocarbon micro-leaking, so they are relatively stable and are often referred to as fossil indicators along with acid-hydrolyzed hydrocarbons. In addition, since the sources of near-surface carbon dioxide are not singular, the carbon dioxide that forms altered carbonates is not only from the micro-leaking of light hydrocarbons from oil and gas reservoirs to the near-surface and their oxidation. At present, the identification and evaluation of near-surface geochemical anomalies are two important challenges. In geochemical exploration, carbon isotope analysis is mainly used to analyze free gas, headspace gas and physically adsorbed gas, and stable carbon isotopes of methane in acid-hydrolyzed hydrocarbon methods.

[0003] Research on carbon isotope analysis of altered carbonates has been relatively limited in recent years. Therefore, exploring and analyzing carbon isotopes of altered carbonates has certain geological significance. Based on long-term practice in oil and gas geochemical exploration, it is known that the content of altered carbonates varies in different regions.

[0004] For the analysis and research of carbon isotopes in altered carbonates, due to the different contents of altered carbonates in different regions, it has been found that when the concentration of carbon dioxide decomposed is low, carbon isotopes cannot be detected by conventional direct collection methods. In addition, due to the large amount of surface oil and gas exploration samples, conventional detection equipment is difficult to meet the analytical needs. Therefore, for the analysis and research of carbon isotopes in altered carbonates, a special collection device is needed to ensure that carbon isotope analysis of altered carbonates can be carried out. Summary of the Invention

[0005] To address the problems in the prior art, this application proposes an altered carbonate carbon isotope analysis device, system, and method, which can collect gases decomposed from altered carbonates with low carbon isotope content and bring them to a target concentration, thereby meeting the needs of large sample quantities and short analysis time in surface oil and gas exploration.

[0006] An altered carbonate isotope enrichment device of the present invention comprises:

[0007] An enrichment component includes at least one enrichment tube having an enrichment segment;

[0008] Refrigeration components, including containers filled with refrigerant;

[0009] The enrichment section can be completely immersed in the refrigerant to freeze the target gas generated by the decomposition of the sample in the enrichment section until its concentration reaches the target concentration.

[0010] When the sample decomposes to produce the target gas, the enrichment section is immersed in the refrigerant, so that the target gas is condensed in the enrichment section to enrich the concentration of the target gas to the target concentration.

[0011] In one embodiment, the enrichment assembly further includes a support platform for fixing the enrichment tube, the support platform suspending the enrichment tube above the refrigerant, and the support platform being able to move the enrichment tube up and down.

[0012] In this embodiment, the enrichment tube is fixed by the support platform and moved up and down so that the enrichment section can be immersed in the refrigerant or removed from the refrigerant as needed.

[0013] In one embodiment, the support platform includes a base plate and a top plate arranged corresponding to each other, and the container and the enrichment tube are respectively installed on the base plate and the top plate;

[0014] In this embodiment, the container is mounted on the base plate, one end of the enrichment tube is connected to the bottom surface of the top plate, and the base plate and the top plate are arranged correspondingly so that the enrichment tube can be suspended above the container. The integrally formed base plate and top plate not only facilitate the installation of the overall device, but also facilitate the movement of the support platform as needed.

[0015] In one embodiment, the enrichment component further includes a telescopic portion, the telescopic end of which is connected to and supports the enrichment tube.

[0016] In this embodiment, the two ends of the telescopic part are respectively connected to the bottom plate and the top plate to form the support platform with the bottom plate and the top plate. The enrichment tube is installed on the top plate, that is, the telescopic end of the telescopic part is connected to the enrichment tube. By controlling the extension of the telescopic end, the enrichment tube is driven to move up and down. By controlling the telescopic part, the enrichment section of the enrichment tube can be immersed in the refrigerant or removed from the refrigerant as needed.

[0017] In one embodiment, a gas analyzer is also provided between the enrichment tube and the sample decomposition furnace that generates the target gas, and the gas analyzer is connected to a gas switch at both its inlet and outlet ends.

[0018] In this embodiment, the sample decomposition furnace decomposes the sample to generate the target gas. The concentration of the target gas is detected by the gas analyzer disposed between the sample decomposition furnace and the enrichment tube. At the same time, it can also determine whether the target gas has been introduced, so as to avoid affecting the analysis results.

[0019] In one embodiment, the gas switch has multiple ventilation lines, each ventilation line is equipped with a solenoid valve, and each ventilation line is connected to a corresponding enrichment tube.

[0020] In this embodiment, due to the large quantity of surface oil and gas exploration samples, multiple ventilation pipelines are connected to the sample decomposition furnace to simultaneously collect multiple sets of samples. The gas switch connects all the ventilation pipelines, and the target gas in each ventilation pipeline is sequentially introduced into the gas analyzer through the solenoid valve. After the target gas in each ventilation pipeline is detected sequentially, the target gas is sequentially introduced into the corresponding enrichment tube to simultaneously obtain multiple sets of samples to be analyzed, thus meeting the requirement of large sample quantities in surface oil and gas exploration.

[0021] In one embodiment, the enrichment tube is made of stainless steel and is provided with adsorption packing material for improving the purity of the target gas.

[0022] Through this embodiment, the enrichment tube made of stainless steel can be reused multiple times in the refrigerant. The adsorption packing material inside the enrichment tube can adsorb other interfering gases in the ventilation pipeline, thereby improving the purity of the target gas. This facilitates the accuracy and authenticity of the analysis results when analyzing the carbon isotopes of the altered carbonate.

[0023] In one embodiment, it further includes a gas collection assembly consisting of a gas collection pipe and a drainage gas collection device, wherein the two ends of the gas collection pipe are respectively connected to the gas outlet of the enrichment assembly and the gas inlet side of the drainage gas collection device.

[0024] In this embodiment, the enriched target gas is introduced into the gas collecting pipe, and the target gas is collected by a drainage gas collecting device. After the target gas is sealed, an appropriate amount of the target gas is taken from the gas collecting bottle in the drainage gas collecting device for carbon isotope analysis.

[0025] The present invention also provides an altered carbonate carbon isotope analysis system, including an altered carbonate carbon isotope analysis device as described in any of the above claims, and a data collection device electrically connected to a gas analyzer.

[0026] This invention also provides a method for carbon isotope analysis of altered carbonates, comprising the following steps:

[0027] The target gas generated from the sample is simultaneously introduced into the gas switcher through multiple ventilation lines;

[0028] The target gas in each of the ventilation lines is sequentially introduced into a gas analyzer for analysis;

[0029] The analyzed target gas is sequentially fed into the corresponding enrichment tubes and enriched to the target concentration;

[0030] The target gas in each enrichment tube is collected for carbon isotope analysis.

[0031] The above-mentioned technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of the present invention can be achieved.

[0032] The present invention provides an altered carbonate carbon isotope analysis device, system, and method, which, compared with the prior art, has at least the following advantages:

[0033] (1) This device can be used to analyze carbon isotopes of low-content altered carbonates.

[0034] (2) It can simultaneously acquire multiple sets of samples required for altered carbonate carbon isotope analysis, saving time for detecting a large number of altered carbonate carbon isotopes. It is also easy to operate, saves analysis costs, and provides a reliable technical means for the application of geochemical exploration technology. Attached Figure Description

[0035] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0036] Figure 1 A schematic diagram of the structure of an analysis apparatus according to an embodiment of the present invention is shown;

[0037] Figure 2 A flowchart of one embodiment of the present invention is shown;

[0038] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0039] Figure label:

[0040] 1-First gas switcher, 2-Gas analyzer, 3-Second gas switcher, 4-Data collection device, 5-Pneumatic pump, 6-Liquid nitrogen cup, 7-Cold trap enrichment assembly, 8-Sample filling container, 9-Sample bottle. Detailed Implementation

[0041] The invention will now be further described with reference to the accompanying drawings.

[0042] Example 1

[0043] This invention provides an altered carbonate isotope enrichment device, comprising:

[0044] An enrichment component includes an enrichment tube having an enrichment segment;

[0045] Refrigeration components, including containers filled with refrigerant;

[0046] The enrichment section can be completely immersed in the refrigerant to freeze the target gas generated by the decomposition of the sample in the enrichment section until its concentration reaches the target concentration.

[0047] When the sample decomposes to produce the target gas, the enrichment section is immersed in the refrigerant, so that the target gas is condensed in the enrichment section to enrich the concentration of the target gas to the target concentration.

[0048] Specifically, the enrichment assembly also includes a support platform for fixing the enrichment tube, which suspends the enrichment tube above the refrigerant and can move the enrichment tube up and down.

[0049] It should be noted that the enrichment tube is fixed by the support platform and moved up and down so that the enrichment section can be immersed in or removed from the refrigerant as needed.

[0050] Specifically, the support platform includes a bottom plate and a top plate that are arranged correspondingly to each other, and a container and an enrichment tube are respectively installed on the bottom plate and the top plate;

[0051] It should be noted that the container is installed on the base plate, and one end of the enrichment tube is connected to the bottom surface of the top plate. The base plate and the top plate are set up in a corresponding manner so that the enrichment tube can be suspended above the container. The integrated base plate and top plate not only facilitate the installation of the whole device, but also facilitate the movement of the support platform as needed.

[0052] Specifically, the enrichment component also includes a telescopic section, the telescopic end of which is connected to the enrichment tube;

[0053] It should be noted that the two ends of the telescopic part are connected to the bottom plate and the top plate respectively, forming a support platform with the bottom plate and the top plate. The enrichment tube is installed on the top plate, that is, the telescopic end of the telescopic part is connected to the enrichment tube, so that the enrichment tube can be moved up and down by controlling the extension of the telescopic end, so that the enrichment section of the enrichment tube can be immersed in the refrigerant or removed from the refrigerant as needed by controlling the telescopic part.

[0054] Specifically, the enrichment tube is made of stainless steel and is filled with adsorption packing material to improve the purity of the target gas.

[0055] It should be noted that the enrichment tube, made of stainless steel, can be reused multiple times within the refrigerant. The adsorption packing inside the enrichment tube can adsorb other interfering gases in the ventilation pipeline, thereby improving the purity of the target gas. This facilitates the accuracy and authenticity of the analytical results when analyzing the carbon isotopes of altered carbonates.

[0056] Specifically, the device also includes a gas collection assembly consisting of a gas collection pipe and a drainage gas collection device. The two ends of the gas collection pipe are respectively connected to the gas outlet of the enrichment assembly and the gas inlet of the drainage gas collection device.

[0057] It should be noted that the enriched target gas is passed into the gas collection pipe and collected through the drainage gas collection device. After the target gas is sealed, an appropriate amount of the target gas is taken from the gas collection bottle in the drainage gas collection device for carbon isotope analysis.

[0058] Example 2

[0059] This invention provides an altered carbonate isotope enrichment device, comprising:

[0060] An enrichment component includes multiple enrichment tubes, each enrichment tube having an enrichment segment;

[0061] Refrigeration components, including containers filled with refrigerant;

[0062] The enrichment section can be completely immersed in the refrigerant to freeze the target gas generated by the decomposition of the sample in the enrichment section until its concentration reaches the target concentration.

[0063] When the sample decomposes to produce the target gas, the enrichment section is immersed in the refrigerant, so that the target gas is condensed in the enrichment section to enrich the concentration of the target gas to the target concentration.

[0064] Specifically, a gas analyzer is also installed between the enrichment tube and the sample decomposition furnace that generates the target gas. Both the inlet and outlet of the gas analyzer are connected to a gas switch.

[0065] It should be noted that the sample decomposition furnace decomposes the sample to generate the target gas. A gas analyzer installed between the sample decomposition furnace and the enrichment tube is used to detect the concentration of the target gas and to determine whether the target gas has been introduced, thus avoiding any impact on the analysis results.

[0066] Specifically, the gas switcher has multiple ventilation lines, each of which is equipped with a solenoid valve and is connected to a corresponding enrichment tube.

[0067] It should be noted that, due to the large quantity of surface oil and gas exploration samples, multiple ventilation pipelines are connected to the sample decomposition furnace to collect multiple sets of samples simultaneously. A gas switcher connects all ventilation pipelines, and a solenoid valve controls the target gas in each ventilation pipeline to be sequentially introduced into the gas analyzer. After the target gas in each ventilation pipeline is detected sequentially, the target gas is sequentially introduced into the corresponding enrichment tube to obtain multiple sets of samples to be analyzed simultaneously, meeting the needs of large sample quantities in surface oil and gas exploration.

[0068] Example 3

[0069] This invention provides an altered carbonate isotope enrichment device, such as... Figure 1 As shown, it includes a cold trap enrichment assembly 7, which has a top plate and a bottom plate arranged corresponding to each other. A liquid nitrogen cup 6 is installed on the bottom plate and is used to hold liquid nitrogen. The two ends of the enrichment tube are respectively connected to the top plate to fix the enrichment tube on the top plate, and the enrichment tube is located above the liquid nitrogen cup.

[0070] Specifically, such as Figure 1 As shown, the enrichment tube has a U-shaped structure and is made of stainless steel. The bottom of its U-shaped structure can be completely immersed in the liquid nitrogen in the liquid nitrogen cup 6 as needed, so that the target gas generated by the decomposition of the sample in the enrichment tube can exchange heat with the liquid nitrogen in the enrichment tube, so that the target gas temporarily becomes solid and is stored in the enrichment tube.

[0071] Specifically, the cold trap enrichment assembly 7 also includes four telescopic sections that are connected to the top plate and the bottom plate at both ends respectively. The telescopic sections are located at the four corners of the top plate and the bottom plate respectively. The telescopic ends of the telescopic sections are connected to the top plate so as to control the bottom of the enrichment tube to be immersed in liquid nitrogen or removed from liquid nitrogen by the amount of extension of the telescopic ends.

[0072] Specifically, such as Figure 1 As shown, the telescopic part is connected to a pneumatic pump 5, which converts the pressure of compressed air into mechanical energy to drive the telescopic part to reciprocate along its axial direction.

[0073] Specifically, such as Figure 1As shown, a first gas switcher 1 and a second gas switcher 3 are interconnected between the cold trap enrichment component 7 and the sample decomposition furnace. A gas analyzer 2 is connected between the first gas switcher 1 and the second gas switcher 3. Twelve sets of corresponding gas supply lines are provided on the first gas switcher 1, the second gas switcher 3, and the sample decomposition furnace. Each set of gas supply lines is also connected to an enrichment tube. That is, the target gas generated by sample decomposition in the sample decomposition furnace is introduced into the first gas switcher 1 through the twelve sets of gas supply lines. The first gas switcher 1 then converts the gas into a gas analyzer. The target gases in the two sets of ventilation pipelines are sequentially introduced into the gas analyzer 2. After the gas analyzer 2 has completed the detection, the target gases are introduced into the corresponding ventilation pipeline in the second gas switch 3. Each ventilation pipeline of the first gas switch 1 and the second gas switch 3 is equipped with a solenoid valve, which controls the opening and closing of the ventilation pipeline by opening and closing the solenoid valve. The target gases entering the second gas switch 3 sequentially enter the corresponding enrichment tubes to exchange heat with liquid nitrogen. The liquid nitrogen absorbs the heat of the target gases, causing the target gases to be temporarily converted into solids and stored in the enrichment tubes.

[0074] It should be noted that, due to the large quantity of surface oil and gas exploration samples, multiple ventilation pipelines are connected to the sample decomposition furnace to collect multiple sets of samples simultaneously. The first gas switcher 1 and the second gas switcher 3 are used to connect all ventilation pipelines, and the target gas in each ventilation pipeline is sequentially introduced into the gas analyzer 2 through the control of the solenoid valve. After the target gas in each ventilation pipeline is detected in turn, the target gas is sequentially introduced into the corresponding enrichment tube to obtain multiple sets of samples to be analyzed at the same time, which meets the needs of large sample quantities in surface oil and gas exploration.

[0075] Furthermore, the enrichment tube is equipped with adsorption packing material for purifying the target gas;

[0076] Specifically, the adsorption packing is composed of a mixture of 5A molecular sieve and porous polymer, which absorbs interfering gases in the ventilation pipeline to ensure the accuracy of the target gas in the analysis process.

[0077] Furthermore, the device also includes a gas collection assembly consisting of a gas collection pipe and a drainage gas collection device. The two ends of the gas collection pipe are respectively connected to the gas outlet of the enrichment assembly and the gas inlet side of the drainage gas collection device. The drainage gas collection device includes a sample filling container 8 and a sample bottle 9 with its opening facing downwards and placed at an angle.

[0078] It should be noted that the enriched target gas is passed into the gas collection tube and collected by the drainage gas collection device. After the target gas is sealed, an appropriate amount of the target gas is taken from the sample bottle 9 for carbon isotope analysis.

[0079] Example 4

[0080] This invention also provides an altered carbonate carbon isotope analysis system, including the altered carbonate carbon isotope analysis apparatus as described above, such as... Figure 1 As shown, it also includes a data collection device 4 electrically connected to the gas analyzer 2. The gas analyzer 2 detects the concentration of the introduced gas and transmits the detected data to the data collection device 4, so that staff can collect the initial data after sample decomposition.

[0081] Example 5

[0082] This invention also provides a method for carbon isotope analysis of altered carbonates, such as... Figure 2 As shown, it includes the following steps:

[0083] Step S100: Decompose the sample to generate the target gas;

[0084] Step S110: Place the altered carbonate sample into a heating decomposition furnace;

[0085] Step S120: Maintain the temperature inside the heating decomposition furnace between 500 and 600°C so that the altered carbonate sample decomposes to produce the target gas, namely carbon dioxide gas.

[0086] Step S200: Enrich the target gas to the target concentration;

[0087] Step S210: Immerse the bottom of the enrichment tube in liquid nitrogen;

[0088] Step S220: Introduce carbon dioxide gas into the enrichment tube so that the carbon dioxide gas can exchange heat with liquid nitrogen and be converted into a solid and temporarily stored at the bottom of the enrichment tube.

[0089] Step S300: Collect the target gas for carbon isotope analysis;

[0090] Step S310: After the carbon dioxide has been enriched in the enrichment tube for a preset time, move the enrichment tube to remove it from the liquid nitrogen.

[0091] Step S320: After carbon dioxide is converted into a gaseous state, it is naturally introduced into the water displacement gas collection device, and the carbon dioxide gas is collected into the sample bottle by the water displacement gas collection method.

[0092] Step S330: Seal the sample vial;

[0093] Step S340: Take an appropriate amount of carbon dioxide gas from the sample bottle as a sample and use it for carbon isotope analysis.

[0094] Example 6

[0095] This invention also provides a method for carbon isotope analysis of altered carbonates, comprising the following steps:

[0096] Step S100: Decompose the sample to generate the target gas;

[0097] Step S110: Place the altered carbonate sample into a heating decomposition furnace;

[0098] Step S120: Maintain the temperature inside the heating decomposition furnace between 500 and 600°C so that the altered carbonate sample decomposes to produce the target gas, namely carbon dioxide gas.

[0099] Step S130: The carbon dioxide gas generated from the sample is simultaneously introduced into the first gas switch through multiple gas inlets;

[0100] Step S140: Sequentially pass the carbon dioxide gas in each ventilation pipeline into the gas analyzer to analyze and detect its concentration;

[0101] Step S150: The detected target gas is sequentially introduced into the corresponding ventilation pipeline in the second gas switch;

[0102] Step S200: Enrich the target gas to the target concentration;

[0103] Step S210: Immerse the bottom of the enrichment tube in liquid nitrogen;

[0104] Step S220: The second gas switch sequentially introduces carbon dioxide gas into the corresponding enrichment tubes, allowing the carbon dioxide gas to exchange heat with liquid nitrogen inside the enrichment tubes, converting it into a solid state and temporarily storing it at the bottom of the enrichment tubes.

[0105] Step S300: Collect the target gas for carbon isotope analysis;

[0106] Step S310: After the carbon dioxide has been enriched in the enrichment tubes for a preset time, remove all the enrichment tubes from the liquid nitrogen.

[0107] Step S320: After carbon dioxide is converted into a gaseous state, it is naturally introduced into the water displacement gas collection device. The carbon dioxide gas in each enrichment tube is collected into the corresponding sample bottle by the water displacement gas collection method.

[0108] Step S330: Seal the sample vial;

[0109] Step S340: Simultaneously, take an appropriate amount and equal amount of carbon dioxide gas from each of all sample bottles as a sample, and perform carbon isotope analysis on all samples at the same time.

[0110] Example 7

[0111] This invention also provides a method for carbon isotope analysis of altered carbonates, comprising the following steps:

[0112] Step S000: Improve the purity of the target gas;

[0113] Step S010: Fill the enrichment tube with an adsorption packing material that can adsorb interfering gases. The adsorption packing material is a mixture of 5A molecular sieve and porous polymer. It absorbs interfering gases in the gas pipeline and ensures the accuracy of the target gas in the analysis process.

[0114] Step S020: Suspend the enrichment tube above the container filled with liquid nitrogen, complete the connection between each functional component, and check the airtightness of the ventilation pipeline.

[0115] Step S100: Decompose the sample to generate the target gas;

[0116] Step S110: Place the altered carbonate sample into a heating decomposition furnace;

[0117] Step S120: Maintain the temperature inside the heating decomposition furnace between 500 and 600°C so that the altered carbonate sample decomposes to produce the target gas, namely carbon dioxide gas.

[0118] Step S130: The carbon dioxide gas generated from the sample is simultaneously introduced into the first gas switch through multiple gas inlets;

[0119] Step S140: Control the opening and closing of each ventilation pipeline by using the solenoid valve in the first gas switch, and sequentially introduce the carbon dioxide gas in each ventilation pipeline into the gas analyzer to analyze and detect its concentration.

[0120] Step S150: The detected target gas is sequentially introduced into the corresponding ventilation pipeline in the second gas switch;

[0121] Step S200: Enrich the target gas to the target concentration;

[0122] Step S210: Before the target gas is generated by the decomposition of the altered carbonate sample, start the pneumatic pump to immerse the bottom of the entire enrichment tube in liquid nitrogen.

[0123] Step S220: The second gas switch sequentially introduces carbon dioxide gas into the corresponding enrichment tubes, allowing the carbon dioxide gas to exchange heat with liquid nitrogen inside the enrichment tubes, converting it into a solid state and temporarily storing it at the bottom of the enrichment tubes.

[0124] It should be noted that once the target gas in one ventilation pipeline is completely stored in the enrichment tube, the solenoid valve of the next ventilation pipeline in the first gas switch is opened, until the target gas in all twelve ventilation pipelines is stored in the corresponding enrichment tube.

[0125] Step S300: Collect the target gas for carbon isotope analysis;

[0126] Step S310: After the carbon dioxide has accumulated in the enrichment tubes for a preset time, start the pneumatic pump to remove all the enrichment tubes from the liquid nitrogen.

[0127] Step S320: After carbon dioxide is converted into a gaseous state at room temperature, it is released naturally. The carbon dioxide gas in each enrichment tube is collected into the corresponding sample bottle by water displacement gas collection method.

[0128] Step S330: Seal the sample vial;

[0129] Step S340: Simultaneously, take an appropriate amount and equal amount of carbon dioxide gas from each of all sample bottles as a sample, and perform carbon isotope analysis on all samples at the same time.

[0130] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0131] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. An altered carbonate carbon isotope analysis device, characterized in that, include: An enrichment component includes at least one enrichment tube having an enrichment segment; Refrigeration components, including containers filled with refrigerant; The gas collection assembly consists of a gas collection pipe and a drainage gas collection device. The two ends of the gas collection pipe are respectively connected to the gas outlet of the enrichment assembly and the gas inlet of the drainage gas collection device. The enrichment section can be completely immersed in the refrigerant to freeze the target gas generated by the decomposition of the sample in the enrichment section until its concentration reaches the target concentration. The enrichment assembly also includes a support platform for fixing the enrichment tube, the support platform suspending the enrichment tube above the refrigerant, and the support platform is capable of moving the enrichment tube up and down. A gas analyzer is also provided between the enrichment tube and the sample decomposition furnace that generates the target gas. The gas analyzer is connected to both the inlet and outlet ends of the gas analyzer. The gas switch has multiple gas passages, each of which is equipped with a solenoid valve and is connected to a corresponding enrichment tube.

2. The altered carbonate carbon isotope analysis apparatus according to claim 1, characterized in that, The support platform includes a base plate and a top plate arranged corresponding to each other, and the container and the enrichment tube are respectively installed on the base plate and the top plate.

3. The altered carbonate carbon isotope analysis apparatus according to claim 1, characterized in that, The enrichment component also includes a telescopic part, the telescopic end of which is connected to and supports the enrichment tube.

4. The altered carbonate carbon isotope analysis apparatus according to any one of claims 1 to 3, characterized in that, The enrichment tube is made of stainless steel and is equipped with adsorption packing material to improve the purity of the target gas.

5. An altered carbonate carbon isotope analysis system, comprising the altered carbonate carbon isotope analysis apparatus according to any one of claims 1-4, characterized in that, It also includes a data collection device that is electrically connected to the gas analyzer.

6. A method for carbon isotope analysis of altered carbonates, using the carbon isotope analysis apparatus for altered carbonates as described in any one of claims 1-4, characterized in that, Includes the following steps: The target gas generated from the sample is simultaneously introduced into the gas switcher through multiple ventilation lines; The target gas in each of the ventilation lines is sequentially introduced into a gas analyzer for analysis; The analyzed target gas is sequentially fed into the corresponding enrichment tubes and enriched to the target concentration; The target gas in each enrichment tube is collected for carbon isotope analysis.

Images