Concentration and enrichment device and method applied to dry gas

Abstract

The invention provides a concentration and enrichment device and method applied to dry gas, the device is used for concentrating and enriching target components in the dry gas, the device comprises kettle bodies, the kettle bodies comprise a first-order kettle body and a second-order kettle body, the first-order kettle body allows the target components to enter and exit, an inlet of the second-order kettle body can be communicated with an outlet of the first-order kettle body, and an outlet of the second-order kettle body can be communicated with an outlet of the second-order kettle body; the first-order kettle body is used for receiving gaseous target components discharged from the first-order kettle body; the cold trap is used for condensing target components in the first-order kettle body and the second-order kettle body; the hot trap is used for heating target components in the first-order kettle body and the second-order kettle body; the temperature control adjusting assembly can drive the first-order kettle body to move towards the cold trap or the hot trap, and the temperature of the first-order kettle body is adjusted according to the length of the first-order kettle body entering the cold trap or the hot trap; the second-order kettle body can be driven to move towards the cold trap or the hot trap, and the temperature of the second-order kettle body is adjusted according to the length of the second-order kettle body entering the cold trap or the hot trap. By means of the device, concentration and enrichment of C2 + heavy hydrocarbon are achieved, and the interpretation capacity of complex oil and gas reservoirs is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil and gas exploration and research, and in particular to a device and method for concentrating and enriching dry gas. Background Art

[0002] Superimposed basins, due to their complex tectonic settings and multiple periods of large-scale tectonic activity, often have source rocks with multiple stages of hydrocarbon generation. Furthermore, due to multi-cycle tectonic activity, oil and gas reservoirs have also experienced multiple stages of oil and gas filling, leading to complex oil and gas source correlation. Furthermore, due to the high maturity of oil and gas in deep strata, conventional natural gas geochemical indicators are ineffective, making tracing the source of natural gas even more difficult. Therefore, there is an urgent need for geochemical indicators that are not affected by maturity and can provide a meaningful indication of source material.

[0003] The carbon isotope composition of alkanes in natural gas is an important basis for judging gas source and maturity due to its stability and strong geological information carrying capacity. 2+ The content of heavy hydrocarbons is significantly reduced, and only the carbon isotope values of methane and ethane can be determined, which is difficult to meet the interpretation needs of complex oil and gas reservoirs. In addition, the sensitivity of the isotope mass spectrometer is limited, and the carbon isotope determination of low-concentration alkanes is difficult. Summary of the Invention

[0004] In view of this, the present application provides a concentration and enrichment device for dry gas, which can 2+ The heavy hydrocarbons are concentrated and enriched, thereby improving the interpretation capability of complex oil and gas reservoirs. In addition, the present application also provides a method applicable to the above-mentioned concentration and enrichment device.

[0005] In order to achieve the above objectives, this application provides the following technical solutions: A concentration and enrichment device for dry gas, used for concentrating and enriching target components in the dry gas, comprising: A kettle body, comprising a first-stage kettle body and a second-stage kettle body, wherein the first-stage kettle body allows the target component to enter and exit, and the inlet of the second-stage kettle body is connected to the outlet of the first-stage kettle body to receive the gaseous target component discharged from the first-stage kettle body; a cold trap, used for condensing the target component located in the first-stage kettle body and the second-stage kettle body; a heat sink for heating the target component located in the first-stage kettle body and the second-stage kettle body; The temperature control and adjustment component is capable of driving the first-stage kettle body to move toward the cold well or the hot well, and adjusting the temperature of the first-stage kettle body by the length of the first-stage kettle body extending into the cold well and the hot well; and is capable of driving the second-stage kettle body to move toward the cold well or the hot well, and adjusting the temperature of the second-stage kettle body by the length of the second-stage kettle body extending into the cold well and the hot well; Among them, the lower limit temperature of the first-stage kettle body is set by the temperature control and adjustment component to discharge components with a boiling point lower than the target component; the upper limit temperature of the first-stage kettle body is set by the temperature control and adjustment component to enrich the target component; based on the boiling point of the target component, the lower limit temperature of the first-stage kettle body and the upper limit temperature of the first-stage kettle body, the temperature of the second-stage kettle body is set by the temperature control and adjustment component to further concentrate the target component entering the second-stage kettle body.

[0006] Optionally, in the above-mentioned concentration and enrichment device for dry gas, the outlet of the second-stage kettle body can be connected to the inlet of the first-stage kettle body, so that the target component enriched in the second-stage kettle body can be injected into the first-stage kettle body.

[0007] Optionally, in the above-mentioned dry gas concentration and enrichment device, the temperature control and adjustment component includes: A monitoring component, used to monitor the temperature of the first-stage kettle body and the temperature of the second-stage kettle body; An actuator, used to drive the movement of the first-stage kettle body and the second-stage kettle body; The control component is used to receive the temperature signal fed back by the monitoring component, compare the temperature value with a preset value, and control the execution of the execution component or the start and stop or power output of the heat sink according to the comparison result to maintain the target temperature range.

[0008] Optionally, in the above-mentioned dry gas concentration and enrichment device, the monitoring component includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged in the first-stage kettle body to monitor the temperature of the first-stage kettle body, and the second temperature sensor is arranged in the second-stage kettle body to monitor the temperature of the second-stage kettle body; The actuator includes a first push rod and a second push rod, the first push rod is used to drive the movement of the first-stage kettle body to adjust the length of the first-stage kettle body extending into the cold well and the hot well, and the second push rod is used to drive the movement of the second-stage kettle body to adjust the length of the second-stage kettle body extending into the cold well and the hot well; The control component includes a temperature controller.

[0009] Optionally, in the above-mentioned dry gas concentration and enrichment device, the interior of the first-stage kettle is filled with activated carbon.

[0010] Optionally, in the above-mentioned dry gas concentration and enrichment device, the first-stage kettle body includes a matching piece detachably arranged on the top of the first-stage kettle body.

[0011] Optionally, the above-mentioned dry gas concentration and enrichment device further includes: A gas flow controller is used to monitor the gas flow rate input into and output from the first-stage kettle body, and is used to monitor the gas flow rate input into and output from the second-stage kettle body.

[0012] Optionally, in the above-mentioned dry gas concentration and enrichment device, the cold trap is a closed liquid nitrogen tank, the hot trap is a spiral glass fiber heating belt, and the cold trap is arranged at the bottom of the hot trap.

[0013] A method for concentrating and enriching dry gas, applicable to any of the above-mentioned devices for concentrating and enriching dry gas, comprising: Step 1: connecting the outlet of a carrier gas bottle filled with nitrogen or helium to the carrier gas inlet of the dry gas concentration and enrichment device, opening the dry gas concentration and enrichment device, and automatically opening and closing the solenoid valve of the dry gas concentration and enrichment device to evacuate the air in the concentration and enrichment device; Step 2, connecting the inlet of the first-stage kettle body with the outlet of the dry gas bottle filled with dry gas; Step 3, setting the minimum temperature, upper limit temperature, and lower limit temperature of the first-stage kettle body, and setting the time interval for switching the first-stage kettle body between the upper limit temperature and the lower limit temperature after the dry gas is completely liquefied at the lowest temperature; Step 4, opening the solenoid valve that can connect the inlet of the second-stage kettle body and the outlet of the first-stage kettle body to input the target component discharged from the first-stage kettle body into the second-stage kettle body; Step 5: heating the second-stage kettle based on the boiling point of the target component and the upper and lower temperature limits of the first-stage kettle to further concentrate and enrich the target component; Step 6, connecting the outlet of the second-stage kettle body with the inlet of the isotope mass spectrometer to input the target component in the second-stage kettle body into the isotope mass spectrometer; Step 7, setting the enrichment amount of the target component in the isotope mass spectrometer, and when the target component reaches the enrichment amount, closing the outlet of the second-stage kettle; Step 8: Start the isotope mass spectrometer to test the target component.

[0014] Optionally, in the above-mentioned method for concentrating and enriching dry gas, step 9 is provided between step 5 and step 6; Step 9: connecting the outlet of the second-stage kettle body with the inlet of the first-stage kettle body.

[0015] The present application provides a concentration and enrichment device for dry gas, wherein the dry gas is introduced into a first-stage kettle body and the length of the first-stage kettle body extending into a cold trap and a hot trap is adjusted by a temperature control adjustment component, thereby achieving preliminary concentration of the dry gas.

[0016] Specifically, the temperature control and adjustment component drives the first-stage kettle body into the cold trap and condenses the dry gas. The upper and lower temperature limits of the first-stage kettle body are then set based on the target component to be concentrated and enriched. This is achieved by driving and adjusting the length of the first-stage kettle body's extension into the cold and hot traps to adjust the upper and lower temperature limits of the first-stage kettle body. This allows for the discharge of components below the boiling point of the target component while also achieving the concentration and enrichment of the target component. The target component concentrated and enriched in the first-stage kettle body is then fed into the second-stage kettle body. The temperature control and adjustment component drives and adjusts the length of the second-stage kettle body's extension into the cold and hot traps to further adjust the temperature of the second-stage kettle body, achieving further concentration and enrichment of the target component.

[0017] It should be noted that the lengths of the first-stage kettle body and the second-stage kettle body extending into the cold trap and the hot trap can be set by a program to achieve automatic adjustment.

[0018] In summary, the temperature control and adjustment components are used to adjust the length of the first-stage kettle body extending into the cold trap and the hot trap, as well as the length of the second-stage kettle body extending into the cold trap and the hot trap, to achieve automatic adjustment of the temperature of the first-stage kettle body and the second-stage kettle body, thereby reducing manual intervention and improving work efficiency. In addition, this device can achieve the purpose of C 2+ The concentration and enrichment of heavy hydrocarbons improves the interpretation ability of complex oil and gas reservoirs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0020] Figure 1 A schematic diagram of the structure of a cold trap and a push rod for a dry gas concentration and enrichment device provided in this application; Figure 2 This is a schematic diagram of the structure of the cold trap, hot trap and push rod of the dry gas concentration and enrichment device provided in this application; Figure 3 A front view of the dry gas concentration and enrichment device provided in this application; Figure 4 A schematic diagram of the structure of the first-stage kettle provided in this application; Figure 5 Main view of the dry gas inlet and outlet provided for this application; Figure 6 This is a schematic diagram of the dry gas concentration and enrichment device provided in this application.

[0021] 1. First-stage kettle body; 2. Cold trap; 3. Hot trap; 4. First push rod; 5. Second push rod; 6. Fittings; 7. Gas flow controller; 8. Carrier gas inlet; 9. Solenoid valve; 10. Inlet pipe of first-stage kettle body; 11. Outlet pipe of first-stage kettle body; 12. Outer shell; 13. Touch screen; 14. Inlet port 1; 15. Outlet port 1; 16. Inlet port 2; 17. Outlet port 2; 18. Injection port 1; 19. Extraction port 1; 20. Injection port 2; 21. Extraction port 2; 22. Isotope mass spectrometer; 23. Pipeline ferrule connector; 24. Second-stage kettle body. DETAILED DESCRIPTION

[0022] The present application provides a dry gas concentration and enrichment device, which can 2+ The heavy hydrocarbons are concentrated and enriched, thereby improving the interpretation capability of complex oil and gas reservoirs. In addition, the present application also provides a method applicable to the above-mentioned concentration and enrichment device.

[0023] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] like Figures 1-6 As shown, the present application provides a dry gas concentration and enrichment device for concentrating and enriching target components in the dry gas, comprising: a kettle, a cold trap 2, a hot trap 3, and a temperature control and adjustment assembly. The kettle comprises a first-stage kettle 1 and a second-stage kettle 24. The outlet of the first-stage kettle 1 can communicate with the inlet of the second-stage kettle 24, so that the second-stage kettle 24 can receive the target components from the first-stage kettle 1; the cold trap 2 is used to condense the target components in the first-stage kettle 1 and the second-stage kettle 24; and the hot trap 3 is used to heat the target components in the first-stage kettle 1 and the second-stage kettle 24.

[0025] More specifically, by setting the minimum temperature, lower temperature limit, and upper temperature limit of the first-stage kettle 1, the target component within the first-stage kettle 1 can be condensed, other components with boiling points below the target component can be discharged, and the target component can be concentrated and enriched. To further remove other impurities in the dry gas, the temperature of the second-stage kettle 24 is set by the temperature control and adjustment assembly based on the boiling point of the target component, the lower temperature limit of the first-stage kettle 1, and the upper temperature limit of the first-stage kettle 1. It can be understood that the temperature of the second-stage kettle 24 is set to be raised within the upper and lower temperature limits of the first-stage kettle 1 to further concentrate and enrich the target component entering the second-stage kettle 24. During this temperature adjustment process, the temperature of the first-stage kettle 1 is adjusted by the temperature control and adjustment assembly driving the first-stage kettle 1 to extend into the cold trap 2 and the hot trap 3 to different lengths, thereby achieving initial concentration and enrichment of the target component. The temperature of the second-stage kettle 24 is adjusted by the temperature control and adjustment assembly driving the second-stage kettle 24 to extend into the cold trap 2 and the hot trap 3 to different lengths, thereby achieving further concentration and enrichment of the target component.

[0026] In summary, the temperature control and adjustment components are used to adjust the length of the first-stage kettle body 1 extending into the cold trap 2 and the hot trap 3, and the length of the second-stage kettle body 24 extending into the cold trap 2 and the hot trap 3, so as to realize the automatic adjustment of the temperature of the first-stage kettle body 1 and the second-stage kettle body 24, thereby reducing manual intervention and improving work efficiency. In addition, the device realizes the automatic adjustment of the temperature of the first-stage kettle body 1 and the second-stage kettle body 24. 2+ The concentration and enrichment of heavy hydrocarbons improves the interpretation ability of complex oil and gas reservoirs.

[0027] It should be noted that the concentration and enrichment device for dry gas is not only applicable to dry gas, but also to wet gas and other gas components that need to be extracted.

[0028] The outlet of the second-stage kettle 24 can be connected to the inlet of the first-stage kettle 1 so that the target component enriched in the second-stage kettle 24 can be injected into the first-stage kettle 1. With this arrangement, firstly, the target component can be circulated in the first-stage kettle 1 and the second-stage kettle 24, thereby repeatedly concentrating the target component in the dry gas and further improving the concentrated and enriched target component; secondly, the combination of the two kettles can achieve the separation of hydrocarbon components in the dry gas in order from light to heavy when concentrating and enriching a certain target component at a certain time interval; thirdly, the recycling of the cold trap 2 and the hot trap 3 reduces costs; fourthly, different upper and lower temperature limits can be set according to the target component to enable the extraction of any component or monomer in the dry gas, no longer limited to the concentration and separation of fixed components in the dry gas, thereby improving the practicality and versatility of the device.

[0029] It should be noted that the device can ensure that the concentration and enrichment effect of a single kettle body meets the standards under precise temperature control. That is to say, both the first-stage kettle body 1 and the second-stage kettle body 24 can be independently connected to the isotope mass spectrometer 22 to effectively improve the sampling efficiency.

[0030] It should also be noted that when testing ordinary natural gas (wet gas), the test concentration of the target component by the isotope mass spectrometer 22 can be achieved by concentrating and enriching the target component only through the first-stage kettle 1. When testing deep dry gas, the first-stage and second-stage kettles 24 can be used in combination. The second-stage gas storage kettle serves as a transfer station for concentration and enrichment, and multiple cycles of concentration and enrichment operations can be performed when actually needed.

[0031] In addition, the temperature control and adjustment assembly includes: a monitoring component for monitoring the temperature of the first-stage kettle body 1 and the temperature of the second-stage kettle body 24; an actuator for driving the movement of the first-stage kettle body 1 and the second-stage kettle body 24; and a control component for receiving temperature signals fed back by the monitoring component, comparing the temperature values with preset values, and controlling the execution of the actuator or the start and stop of the heat sink 3 or the power output based on the comparison results to maintain the target temperature range. As can be seen, the operating principle of this temperature control and adjustment assembly is simple.

[0032] More specifically, the monitoring component includes a first temperature sensor and a second temperature sensor. The first temperature sensor is arranged in the first-stage kettle body 1 to monitor the temperature of the first-stage kettle body 1, and the second temperature sensor is arranged in the second-stage kettle body 24 to monitor the temperature of the second-stage kettle body 24. The actuator includes a first push rod 4 and a second push rod 5. The first push rod 4 is used to drive the movement of the first-stage kettle body 1 to adjust the length of the first-stage kettle body 1 extending into the cold well 2 and the hot well 3, and the second push rod 5 is used to drive the movement of the second-stage kettle body 24 to adjust the length of the second-stage kettle body 24 extending into the cold well 2 and the hot well 3. The control component includes a temperature controller. Preferably, the cold well 2 is located at the bottom of the hot well 3. The first push rod 4 drives the first-stage kettle body 1 to move up and down to achieve temperature adjustment of the first-stage kettle body 1, and the second push rod 5 drives the second-stage kettle body 24 to move up and down to achieve temperature adjustment of the second-stage kettle body 24. Such an arrangement makes the structure compact and easy to adjust.

[0033] Among them, such as Figure 1-Figure 3 As shown, the first temperature sensor is arranged at the bottom of the first-stage kettle body 1, and the second temperature sensor is arranged at the bottom of the second-stage kettle body 24; the first push rod 4 and the second push rod 5 are both electric push rods.

[0034] The first stage kettle body 1 is preferably filled with activated carbon. 2+ The adsorption effect of heavy hydrocarbons is better, which can better fix the adsorbed target components and improve the subsequent concentration, enrichment and separation effects.

[0035] Further, such as Figure 4As shown, the first-stage kettle body 1 includes a fitting 6 that is detachably mounted on the top of the first-stage kettle body 1. When the first-stage kettle body 1 is in operation, the fitting 6 is used to seal the top of the first-stage kettle body 1, thereby forming a closed working space. When the first-stage kettle body 1 is not in operation, the fitting 6 can be removed to clean the interior of the first-stage kettle body 1 and replace the activated carbon inside.

[0036] In addition, it should be noted that Figure 4 As shown in the figure, the air inlet pipe 10 of the first-stage kettle body and the air outlet pipe 11 of the first-stage kettle body can both input or output dry gas into or out of the first-stage kettle body 1 through the matching piece 6.

[0037] It should also be noted that the fitting 6 can be a screw cap or a commonly used sealing structure.

[0038] In an optional embodiment, if Figure 6 As shown, the dry gas concentration and enrichment device also includes a gas flow controller 7 for monitoring the gas flow rate into and out of the first-stage reactor 1, as well as the gas flow rate into and out of the second-stage reactor 24. Due to the different components of dry gas from different origins and regions, it is difficult to determine the injection volume of the sample gas and the target component content obtained. The addition of the gas flow controller 7 allows for real-time gas monitoring to ensure that the carbon isotope value of the gas entering the isotope mass spectrometer 22 can be accurately determined. This improves the sampling effect.

[0039] It should be noted that cold trap 2 is a closed liquid nitrogen tank, and hot trap 3 is a spiral glass fiber heating tape. Cold trap 2 is located at the bottom of hot trap 3. The closed liquid nitrogen tank enables rapid cooling and effective capture. The closed design effectively prevents outside air or other impurities from entering the system, reducing the risk of sample contamination and ensuring the accuracy of analytical results. Hot trap 3 is a spiral glass fiber heating tape, which increases the contact surface area between the heating tape and the target component, making heat distribution more uniform and contributing to a more efficient desorption process.

[0040] The combination of cold trap 2 and hot trap 3—that is, cold trap 2 is used to capture the target component, while hot trap 3 is responsible for desorbing it in the subsequent step—can significantly improve separation efficiency and is particularly suitable for processing complex gas mixtures.

[0041] In addition, the present application also provides a method suitable for use in a dry gas concentration and enrichment device, the method comprising the following steps: Step 1: connect the outlet of the carrier gas bottle filled with nitrogen or helium to the carrier gas inlet 8 of the dry gas concentration and enrichment device, open the dry gas concentration and enrichment device, and automatically open and close the solenoid valve 9 of the dry gas concentration and enrichment device to exhaust the air in the concentration and enrichment device; Step 2: connect the inlet of the first-stage kettle body 1 to the outlet of the dry gas bottle filled with dry gas, so that the dry gas enters the first-stage kettle body 1; Step 3: set the minimum temperature, upper limit temperature, and lower limit temperature of the first-stage kettle body 1. After the dry gas is completely liquefied at the minimum temperature, set the first-stage kettle body 1 to the upper limit temperature. The time interval for switching between the upper and lower limit temperatures is set, so that the dry gas entering the first-stage kettle body 1 can be quickly condensed and adsorbed by the activated carbon, and then by setting the lower limit temperature of the first-stage kettle body 1, other components with boiling points lower than the target components can be discharged, and by setting the upper limit temperature of the first-stage kettle body 1, the target components can be concentrated and enriched. It should be noted that the time for switching between the upper and lower limit temperatures is set according to demand. It should also be noted that the adjustment of the first-stage kettle body 1 between the upper and lower limit temperatures is achieved by the first push rod 4 driving the upper limit of the first-stage kettle body 1. The downward movement is realized. More specifically, the first push rod 4 drives the first-stage kettle body 1 to move upward to increase the temperature, and the first push rod 4 drives the first-stage kettle body 1 to move downward to decrease the temperature. As for the temperature of the first-stage kettle body 1 that needs to be increased or decreased, it is related to the length of the first-stage kettle body 1 entering the hot trap 3 and the cold trap 2; Step 4, open the electromagnetic valve 9 that can connect the inlet of the second-stage kettle body 24 and the outlet of the first-stage kettle body 1 to input the target component discharged from the first-stage kettle body 1 into the second-stage kettle body 24; Step 5, based on the boiling point, upper limit temperature and lower limit temperature of the target component, heat the second-stage kettle body 24, that is, the first The second push rod 5 drives the second-stage kettle body 24 to move upward to the hot well 3. The length of the second kettle body extending into the hot well 3 is set according to the required temperature to achieve further concentration and enrichment of the target component; Step 6, connect the outlet of the second-stage kettle body 24 with the inlet of the isotope mass spectrometer 22 to input the target component in the second-stage kettle body 24 into the isotope mass spectrometer 22; Step 7, set the enrichment amount of the target component in the isotope mass spectrometer 22, and when the target component reaches the enrichment amount, close the outlet of the second-stage kettle body 24; Step 8, start the isotope mass spectrometer 22 to test the target component.

[0042] It should be noted that when the carrier gas bottle and the dry gas bottle are connected to the concentration and enrichment device, they can be done at the same time, but the concentration and enrichment device and the dry gas bottle must be connected after the gas in the carrier gas bottle has exhausted the air in the device.

[0043] Among them, step 9 is set between step 5 and step 6. In step 9, the outlet of the second-stage kettle body 24 is connected to the inlet of the first-stage kettle body 1 to achieve cyclic concentration and enrichment of the target component. The number of cycles of concentration and enrichment of the target component is set according to demand.

[0044] It should be noted that, when achieving the concentration and enrichment of the target component, the above steps 1-8 may be slightly changed according to the actual situation, but the operation sequence of the first-stage kettle 1 and the second-stage kettle 24 for the concentration and enrichment of the target component remains unchanged.

[0045] Take the enrichment of propane C3 and enrichment of C5~C7 as examples for explanation, and in this example, the device for enriching dry gas includes a touch screen 13 and a housing 12, the touch screen 13 is arranged on the housing 12, and the housing 12 is provided with an air inlet 14 and an air outlet 15 that can be connected to the first-stage kettle body 1, and an air inlet 2 16 and an air outlet 2 17 that can be connected to the second-stage kettle body 24, and a carrier gas inlet 8 is provided on the housing 12, and the carrier gas inlet 8 can be connected to the entire pipeline of the enrichment device to achieve the enrichment of the dry gas. To exhaust the air within the device, and depending on the type of gas entering the first-stage kettle body 1 and the second-stage kettle body 24, the housing 12 is further provided with an injection port 18 and an extraction port 19, which communicate with the first-stage kettle body 1, as well as an injection port 20 and an extraction port 21, which communicate with the second-stage kettle body 24. It should be noted that the functions and connection methods of injection port 18, extraction port 19, injection port 20, and extraction port 21 are similar to those of inlet 14, outlet 15, inlet 26, and outlet 27, respectively, and will not be further described here. Furthermore, to facilitate the movement of the device, a pulley is provided at the bottom of the housing 12, enhancing its practicality.

[0046] It should be noted that when the first-stage kettle body 1 and the second-stage kettle body 24 need to be connected to other pipelines or equipment, a pipeline ferrule joint 23 can be added to complete the connection of the entire pipeline.

[0047] To drain the line (includes steps 1 and 2): The carrier gas bottle is connected to the carrier gas inlet 8, and the dry gas bottle is connected to the gas inlet 14. The carrier gas bottle is opened, and the concentration and enrichment device automatically controls the switch of the solenoid valve 9 to allow the carrier gas to traverse the pipeline and empty the pipeline. The dry gas bottle valve is opened to allow the dry gas to enter the first-stage kettle body 1.

[0048] Concentration and enrichment of C3 (including steps 3 and 4): On touch screen 13, the upper temperature limit of the first-stage reactor 1 is set to -20°C and the lower temperature limit is set to -60°C. The temperature control and adjustment component first lowers the temperature of the first-stage reactor 1 and the second-stage reactor 24 to the minimum temperature (-198°C) to completely liquefy the incoming dry gas. Subsequently, at three-minute intervals, the temperature of the first-stage reactor 1 is sequentially controlled to the lower and upper temperature limits, allowing the C3 to concentrate in the second-stage reactor 24.

[0049] Gasification releases C3 and performs online carbon isotope testing (including steps 5-8): Connect gas outlet 2 17 to isotope mass spectrometer 22. Set the target concentration level to 1 ml on touchscreen 13. The concentration device is programmed to automatically increase the temperature of the second-stage reactor 24 and discharge C3 gas. When the amount of C3 entering the isotope mass spectrometer 22 reaches 1 ml, the system automatically controls solenoid valve 9 to cut off the discharge of the target component from the second-stage reactor 24. The isotope mass spectrometer 22 is then activated to analyze the carbon isotopes in C3.

[0050] Based on steps 1 and 2, concentrate and enrich C5~C7 (including steps 3-5 and 9): On the touch screen 13, the lower limit temperature of the first-stage kettle body 1 is set to 15°C and the upper limit temperature is set to 110°C. The lower limit temperature is used to discharge light hydrocarbons before C5, and the upper limit temperature is used to ensure that C7 can be vaporized and released while heavy hydrocarbons above C8 will not be vaporized and released. The concentration and enrichment device is programmed to automatically switch between the lower limit temperature and the upper limit temperature at intervals of 3 minutes for the first-stage kettle body 1, thereby vaporizing C5~C7 in the first-stage kettle body 1 and concentrating and enriching them in the second-stage kettle body 24. At this time, the gas outlet 2 17 can be connected to the gas inlet 14 through a pipeline, and C5~C7 circulates between the first-stage kettle body 1 and the second-stage kettle body 24. Through temperature control, repeated concentration and enrichment of C5~C7 is achieved to ensure the concentration accuracy of C5~C7.

[0051] C5~C7 release and online carbon isotope testing (including steps 6-8): Connect the second gas outlet 17 to the isotope mass spectrometer 22, set the concentration and enrichment amount of the target component to 3 ml on the touch screen 13, and the concentration and enrichment device monitors the gas flow discharged from the second-stage kettle 24 in real time. When the amount of C5~C7 reaches 3 ml, the system automatically cuts off the discharge of the target component in the second-stage kettle 24, and starts the isotope mass spectrometer 22 to perform carbon isotope testing on C5~C7 stored in the test bin of the isotope mass spectrometer 22.

[0052] After the test is completed, the remaining gas components in the first-stage reactor body 1 can be concentrated and carbon isotope tested in the above order, or can be directly discharged.

[0053] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0054] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0055] It should also be noted that in the devices, equipment, and housing of the present application, each component or each step can be decomposed and / or reassembled. Such decomposition and / or reassembly should be regarded as equivalent solutions of the present application.

[0056] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0057] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly illustrate the technical solutions and cannot be used to limit the scope of protection of the present application.

[0058] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A device for concentrating and enriching dry gas, characterized in that: Used to concentrate target components in enriched dry gas, including: A kettle body, comprising a first-stage kettle body and a second-stage kettle body, wherein the first-stage kettle body allows the target component to enter and exit, and the inlet of the second-stage kettle body is connected to the outlet of the first-stage kettle body to receive the gaseous target component discharged from the first-stage kettle body; a cold trap, used for condensing the target component located in the first-stage kettle body and the second-stage kettle body; a heat sink for heating the target component located in the first-stage kettle body and the second-stage kettle body; The temperature control and adjustment component is capable of driving the first-stage kettle body to move toward the cold well or the hot well, and adjusting the temperature of the first-stage kettle body by the length of the first-stage kettle body extending into the cold well and the hot well; and is capable of driving the second-stage kettle body to move toward the cold well or the hot well, and adjusting the temperature of the second-stage kettle body by the length of the second-stage kettle body extending into the cold well and the hot well; Among them, the lower limit temperature of the first-stage kettle body is set by the temperature control and adjustment component to discharge components with a boiling point lower than the target component; the upper limit temperature of the first-stage kettle body is set by the temperature control and adjustment component to enrich the target component; based on the boiling point of the target component, the lower limit temperature of the first-stage kettle body and the upper limit temperature of the first-stage kettle body, the temperature of the second-stage kettle body is set by the temperature control and adjustment component to further concentrate the target component entering the second-stage kettle body.

2. The dry gas concentration and enrichment device according to claim 1, characterized in that: The outlet of the second-stage kettle body can be communicated with the inlet of the first-stage kettle body, so as to inject the target component enriched in the second-stage kettle body into the first-stage kettle body.

3. The dry gas concentration and enrichment device according to claim 1, characterized in that: The temperature control and adjustment component includes: A monitoring component, used to monitor the temperature of the first-stage kettle body and the temperature of the second-stage kettle body; An actuator, used to drive the movement of the first-stage kettle body and the second-stage kettle body; The control component is used to receive the temperature signal fed back by the monitoring component, compare the temperature value with a preset value, and control the execution of the execution component or the start and stop or power output of the heat sink according to the comparison result to maintain the target temperature range.

4. The dry gas concentration and enrichment device according to claim 3, characterized in that: The monitoring component includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged in the first-stage kettle body to monitor the temperature of the first-stage kettle body, and the second temperature sensor is arranged in the second-stage kettle body to monitor the temperature of the second-stage kettle body; The actuator includes a first push rod and a second push rod, the first push rod is used to drive the movement of the first-stage kettle body to adjust the length of the first-stage kettle body extending into the cold well and the hot well, and the second push rod is used to drive the movement of the second-stage kettle body to adjust the length of the second-stage kettle body extending into the cold well and the hot well; The control component includes a temperature controller.

5. The dry gas concentration and enrichment device according to claim 1, characterized in that: The interior of the first-stage kettle is filled with activated carbon.

6. The dry gas concentration and enrichment device according to claim 5, characterized in that: The first-stage kettle body includes a matching piece detachably arranged on the top of the first-stage kettle body.

7. The dry gas concentration and enrichment device according to claim 1, characterized in that: Also includes: A gas flow controller is used to monitor the gas flow rate input into and output from the first-stage kettle body, and is used to monitor the gas flow rate input into and output from the second-stage kettle body.

8. The dry gas concentration and enrichment device according to claim 1, characterized in that: The cold trap is a closed liquid nitrogen tank, the hot trap is a spiral glass fiber heating belt, and the cold trap is arranged at the bottom of the hot trap.

9. A method for concentrating and enriching dry gas, characterized in that: The dry gas concentration and enrichment device according to claims 1 to 8 comprises: Step 1: connecting the outlet of a carrier gas bottle filled with nitrogen or helium to the carrier gas inlet of the dry gas concentration and enrichment device, opening the dry gas concentration and enrichment device, and automatically opening and closing the solenoid valve of the dry gas concentration and enrichment device to evacuate the air in the dry gas concentration and enrichment device; Step 2, connecting the inlet of the first-stage kettle body with the outlet of the dry gas bottle filled with dry gas; Step 3, setting the minimum temperature, upper limit temperature, and lower limit temperature of the first-stage kettle body, and setting the time interval for switching the first-stage kettle body between the upper limit temperature and the lower limit temperature after the dry gas is completely liquefied at the lowest temperature; Step 4, opening the solenoid valve that can connect the inlet of the second-stage kettle body and the outlet of the first-stage kettle body to input the target component discharged from the first-stage kettle body into the second-stage kettle body; Step 5: heating the second-stage kettle based on the boiling point of the target component and the upper and lower temperature limits of the first-stage kettle to further concentrate and enrich the target component; Step 6, connecting the outlet of the second-stage kettle body with the inlet of the isotope mass spectrometer to input the target component in the second-stage kettle body into the isotope mass spectrometer; Step 7, setting the enrichment amount of the target component in the isotope mass spectrometer, and when the target component reaches the enrichment amount, closing the outlet of the second-stage kettle; Step 8: Start the isotope mass spectrometer to test the target component.

10. The method for concentrating and enriching dry gas according to claim 9, characterized in that: Set step 9 between steps 5 and 6; Step 9: connecting the outlet of the second-stage kettle body with the inlet of the first-stage kettle body.

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