A system and method for measuring components of fire-flooding tail gas under high pressure conditions

Abstract

The application discloses a kind of high-pressure conditions under fire drive tail gas component measurement system and method, it is related to heavy oil reservoir enhanced oil recovery technical field, the measurement system includes: experimental device, back pressure module, gas-liquid separation module and gas analysis module;Wherein, the back pressure module includes: high-pressure plunger back pressure valve and low-pressure coil spring back pressure valve;The high-pressure plunger back pressure valve one end is connected with the output end of the experimental device, the other end is connected with the gas-liquid separation module;The low-pressure coil spring back pressure valve one end is connected with the gas-liquid separation module, the other end is connected with the gas analysis module.The measurement system and method of the application have the advantages that response time is short, the true and stable, protect instrument, and to the gas component of experimental output real-time feedback, can realize the quick measurement of combustion fire drive tail gas under the high pressure condition of reservoir, guide crude oil reservoir fire drive development.

Description

Technical Field

[0001] This invention relates to the field of enhanced oil recovery technology for heavy oil reservoirs, and in particular to a system and method for measuring the components of exhaust gas from fire-driven oil spills under high pressure conditions. Background Technology

[0002] Oil reservoir combustion technology involves injecting air into the reservoir to achieve in-layer combustion, extracting crude oil through complex underground chemical reactions. These underground chemical reactions directly impact the final development outcome, and determining the state of underground combustion reactions through the composition of underground flue gas is the most common method. However, indoor research is limited by the technical limitations of backpressure control methods, making it difficult to balance high-pressure experiments and rapid gas response. On-site research is constrained by the fact that the gas production volume is far higher than that required by various flue gas analysis sensors on the market, and the fact that the produced gas is mostly moist, which can damage the sensor module. This poses significant challenges to the study of underground chemical reaction states using flue gas. This invention designs a rapid measurement method for combustion exhaust gas under high-pressure conditions, overcoming the problems of uneven gas production, long response time, and dry / wet separation of produced flue gas in traditional backpressure methods.

[0003] Existing technology discloses a plunger-type back pressure system, in which the model controls the fluid back pressure through a plunger-type back pressure valve. This device is commonly used for back pressure control of liquid phase fluids, but it has drawbacks such as large pressure fluctuations and discontinuous gas phase products in gas phase fluid control.

[0004] Existing technology discloses a snap-ring type back pressure system. In this system, fluid back pressure is controlled via a snap-ring type back pressure valve. This device is commonly used for gas phase fluid control, but under high pressure conditions, the gas compression volume is large, and the delay time is long. Therefore, it cannot be directly used for liquid phase fluid back pressure control, requiring cumbersome pre-injection pressure setting operations.

[0005] Based on the above-mentioned technical problems, the purpose of this invention is to design a method for rapid measurement of fire-driven exhaust gas components under high pressure conditions by combining a plunger-type back pressure valve, a snap-ring back pressure valve, a two-stage gas-liquid separation, and gas supply for the analyzer. This method aims to meet the requirements of stable pressure control and short gas phase response time in indoor high-pressure fire-driven combustion tube experiments, while also meeting the requirements of large-volume dry-wet separation and small-volume extraction monitoring on site. Summary of the Invention

[0006] The purpose of this invention is to provide a system and method for measuring the composition of combustion exhaust gas under high-pressure conditions. This system enables rapid measurement of combustion exhaust gas under high-pressure conditions in oil reservoirs. By analyzing the changes in exhaust gas composition and temperature changes within the reaction device, a systematic understanding can be established to determine the on-site combustion status and guide the development of oil reservoirs through combustion. To achieve the above objective, this invention provides the following technical solution: On the one hand, the present invention provides a fire-driven exhaust gas component measurement system under high pressure conditions, the measurement system comprising: experimental device 1, back pressure module, gas-liquid separation module and gas analysis module; The back pressure module includes: a high-pressure plunger-type back pressure valve 2 and a low-pressure snap ring-type back pressure valve 8; One end of the high-pressure plunger back pressure valve 2 is connected to the output end of the experimental device 1, and the other end is connected to the gas-liquid separation module. One end of the low-pressure snap ring back pressure valve 8 is connected to the gas-liquid separation module, and the other end is connected to the gas analysis module.

[0007] Furthermore, the high-pressure plunger-type back pressure valve 2 is a first-stage back pressure valve, placed before the gas-liquid separation module; The low-pressure snap ring back pressure valve 8 is a two-stage back pressure valve, placed after the gas-liquid separation module.

[0008] Furthermore, the gas-liquid separation module includes: a primary gas-liquid separator 3, a water cooling device 5, and a secondary gas-liquid separator 6; The first-stage gas-liquid separator 3 is connected to the other end of the high-pressure plunger-type back pressure valve 2 via the second valve 14. The upper end of the first-stage gas-liquid separator 3 is connected to the water cooling device 5 via the third valve 15. The water cooling device 5 is connected to the second-stage gas-liquid separator 6 via the fifth valve 17. The upper end of the second-stage gas-liquid separator 6 is connected to one end of the low-pressure snap ring-type back pressure valve 8 via the seventh valve 19.

[0009] Furthermore, the lower end of the primary gas-liquid separator 3 controls the flow of the liquid phase product in the pipeline to the first interface 4 through the fourth valve 16, and the lower end of the secondary gas-liquid separator 6 controls the flow of the liquid phase product in the pipeline to the second interface 7 through the sixth valve 18.

[0010] Furthermore, the gas analysis module includes: a drying tank 9, a quantitative air pump 11, and a flue gas analyzer 12; The drying tank 9 is connected to the other end of the low-pressure snap-lock back pressure valve 8 via the eighth valve 20. The drying tank 9 is connected to the quantitative air extraction pump 11 via the three-way valve 10. The quantitative air extraction pump 11 is connected to the flue gas analyzer 12 via a pipeline.

[0011] Furthermore, the flue gas analyzer 12 is equipped with a high-precision gas sensor with a measurement accuracy of ±0.01%.

[0012] On the other hand, based on the above measurement system, the present invention also discloses a method for measuring the components of fire-driven exhaust gas under high pressure conditions, the measurement method comprising the following steps: The high-pressure fire-driven experimental product was discharged from experimental device 1 to obtain a gas-liquid mixed sample. The gas-liquid mixture sample is depressurized, and the depressurized gas-liquid mixture sample is then separated into liquid and gaseous products. The liquid phase product is discharged into the interface device, and the gas phase product is measured and analyzed.

[0013] Furthermore, the specific steps for separating the depressurized gas-liquid mixture sample are as follows: The gas-liquid mixture sample is passed through a primary gas-liquid separator 3 and a water cooling device 5, which rapidly condenses the water vapor in the gas-liquid mixture sample to achieve preliminary gas-liquid separation. The gas-liquid mixture sample that has achieved preliminary gas-liquid separation is then passed through a secondary gas-liquid separator 6 to further separate the gas-liquid mixture sample.

[0014] Furthermore, the specific steps for measuring and analyzing the gaseous products are as follows: The gaseous product is dried in drying tank 9 to obtain the dried gaseous product. The required gas phase product is extracted from the dried gas phase product by a quantitative pump 11 and measured by a flue gas analyzer 12. The flue gas analyzer 12 measures and analyzes the gaseous products.

[0015] Furthermore, the measurement method further includes the following steps: Nitrogen gas was introduced into the back pressure module, gas-liquid separation module, and gas analysis module, and an airtightness check was performed. The flue gas analyzer 12 in the gas analysis module was calibrated before the experiment using standard gas. Turn on the pipeline insulation and heat tracing tape and the water cooling device 5 in the gas-liquid separation module to keep the output pipeline at 60-70℃ and the cooling pipeline at 5-10℃. The back pressure of the experimental device 1 and the back pressure module is adjusted.

[0016] The technical effects and advantages of this invention are as follows: First, it has a short response time (gas hysteresis time less than 2 minutes) and accurate readings (small fluctuations in gas composition and measurement accuracy of ±0.1%): By combining the use of plunger-type back pressure valve and snap ring back pressure valve, it fully leverages the advantages of the plunger-type back pressure valve for fast gas phase composition analysis and the snap ring back pressure valve for small gas phase fluid pressure fluctuations. Second, stable readings: The combination of plunger-type back pressure valve and snap ring back pressure valve ensures stable output gas flow rate and pressure, resulting in stable readings of the flue gas analyzer. Third, instrument protection: The gas drying system, consisting of two sets of gas-liquid separators, a water cooling device, and a drying tank, protects the spring-loaded back pressure valve and the flue gas analyzer from water ingress to the greatest extent possible. Fourth, real-time feedback: The gas analysis module consists of a quantitative pump and a flue gas analyzer. The quantitative pump extracts the gas required for the flue gas analysis from the dry fire-driven flue gas flowing out of the spring-loaded back pressure valve. The flue gas analyzer is equipped with a high-precision gas sensor, which can provide real-time feedback on the composition of the gas produced in the experiment.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0018] Figure 1 This is a flowchart of a method for measuring the components of fire-driven exhaust gas under high pressure conditions according to the present invention. Figure 2 This is a schematic diagram of a fire-driven exhaust gas component measurement system under high pressure conditions according to the present invention; Figure 3 This is a schematic diagram of the gas component variation over time in a specific embodiment of the present invention; In the diagram, 1. Experimental apparatus; 2. High-pressure plunger-type back pressure valve; 3. First-stage gas-liquid separator; 4. First interface device; 5. Water cooling device; 6. Second-stage gas-liquid separator; 7. Second interface device; 8. Low-pressure snap ring-type back pressure valve; 9. Drying tank; 10. Three-way valve; 11. Quantitative air pump; 12. Flue gas analyzer; 13. First valve; 14. Second valve; 15. Third valve; 16. Fourth valve; 17. Fifth valve; 18. Sixth valve; 19. Seventh valve; 20. Eighth valve. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To address the shortcomings of existing technologies, this invention discloses a method for measuring the components of fire-driven exhaust gas under high-pressure conditions, such as... Figure 1 The flowchart shown is a method for measuring the components of fire-driven exhaust gas under high pressure conditions according to the present invention. The measurement method includes the following steps: The high-pressure fire-driven experimental product was discharged from experimental device 1 to obtain a gas-liquid mixed sample. The gas-liquid mixture sample is depressurized, and the depressurized gas-liquid mixture sample is then separated into liquid and gaseous products. The liquid phase product is discharged into the interface device, and the gas phase product is measured and analyzed.

[0021] Preferably, the specific steps for gas-liquid separation of the depressurized gas-liquid mixture sample are as follows: The gas-liquid mixture sample is passed through a primary gas-liquid separator 3 and a water cooling device 5 to rapidly condense the water vapor in the gas-liquid mixture sample and achieve preliminary gas-liquid separation. The gas-liquid mixture sample that has undergone preliminary gas-liquid separation is passed through a secondary gas-liquid separator 6 to further separate the gas-liquid mixture sample.

[0022] Preferably, the specific steps for measuring and analyzing the gaseous products are as follows: The gaseous product is dried in drying tank 9 to obtain the dried gaseous product. The required gas phase product is extracted from the dried gas phase product by a quantitative pump 11 and measured by a flue gas analyzer 12. The flue gas analyzer 12 measures and analyzes the gaseous products.

[0023] Preferably, the measurement method further includes the following steps: Nitrogen gas was introduced into the back pressure module, gas-liquid separation module, and gas analysis module, and an airtightness check was performed; the flue gas analyzer 12 in the gas analysis module was calibrated before the experiment using standard gas; Turn on the pipeline insulation and heat tracing tape and the water cooling device 5 in the gas-liquid separation module to keep the output pipeline at 60-70℃ and the cooling pipeline at 5-10℃. The back pressure of the experimental device 1 and the back pressure module is adjusted.

[0024] Based on the above measurement method, this invention also discloses a fire-driven exhaust gas component measurement system under high-pressure conditions, such as... Figure 2 The diagram shown is a schematic of a high-pressure fire-driven exhaust gas component measurement system according to the present invention. The measurement system includes: Experimental setup 1 consists of a back pressure module, a gas-liquid separation module, and a gas analysis module; The back pressure module includes: a high-pressure plunger-type back pressure valve 2 and a low-pressure snap ring-type back pressure valve 8; One end of the high-pressure plunger back pressure valve 2 is connected to the output end of the experimental device 1, and the other end is connected to the gas-liquid separation module. One end of the low-pressure snap ring back pressure valve 8 is connected to the gas-liquid separation module, and the other end is connected to the gas analysis module.

[0025] Preferably, the high-pressure plunger-type back pressure valve 2 is a first-stage back pressure valve, placed before the gas-liquid separation module; The low-pressure snap ring back pressure valve 8 is a two-stage back pressure valve, placed after the gas-liquid separation module.

[0026] Preferably, the gas-liquid separation module includes: a primary gas-liquid separator 3, a water cooling device 5, and a secondary gas-liquid separator 6; The first-stage gas-liquid separator 3 is connected to the other end of the high-pressure plunger-type back pressure valve 2 via the second valve 14. The upper end of the first-stage gas-liquid separator 3 is connected to the water cooling device 5 via the third valve 15. The water cooling device 5 is connected to the second-stage gas-liquid separator 6 via the fifth valve 17. The upper end of the second-stage gas-liquid separator 6 is connected to one end of the low-pressure snap ring-type back pressure valve 8 via the seventh valve 19.

[0027] Preferably, the lower end of the primary gas-liquid separator 3 is controlled by the fourth valve 16 to direct the liquid phase product in the pipeline to the first interface 4, and the lower end of the secondary gas-liquid separator 6 is controlled by the sixth valve 18 to direct the liquid phase product in the pipeline to the second interface 7.

[0028] Preferably, the gas analysis module includes: a drying tank 9, a quantitative pump 11, and a flue gas analyzer 12; The drying tank 9 is connected to the other end of the low-pressure snap-lock back pressure valve 8 via the eighth valve 20. The drying tank 9 is connected to the quantitative air extraction pump 11 via the three-way valve 10. The quantitative air extraction pump 11 is connected to the flue gas analyzer 12 via a pipeline.

[0029] Preferably, the flue gas analyzer 12 is equipped with a high-precision gas sensor with a measurement accuracy of ±0.01%.

[0030] Preferably, the gas drying system, consisting of a primary gas-liquid separator 3, a secondary gas-liquid separator 6, a water cooling device 5, and a drying tank 9, maximizes protection against water ingress into the low-pressure snap-lock back pressure valve 8 and the flue gas analyzer 12.

[0031] Oil samples from the Liaohe Block in China were selected as experimental samples to determine the exhaust gas composition of the high-temperature, high-pressure fire-driven experiment. Specific development steps and parameters are as follows: A high-pressure plunger-type back pressure valve 2 (first-stage back pressure valve) with a back pressure module is installed at the output end of the high-pressure fire-drive experimental device 1. This allows the fire-drive experimental products (oil, gas, and water) to rapidly reduce their pressure after passing through the first-stage back pressure valve and enter the gas-liquid separation module. The gas-liquid separation module consists of a first-stage gas-liquid separator 3, a water cooling device 5, and a second-stage gas-liquid separator 6, which fully separates the gas and liquid phases of the fire-drive experimental products. The exhaust gas passes through a low-pressure snap-on back pressure valve 8 (second-stage back pressure valve) of the back pressure module. The low-pressure snap-on back pressure valve 8 is placed after the gas-liquid separation module, which stabilizes the pressure of the gas phase products. The analysis module continuously monitors the changes in the content of each flue gas component in the sample, and the oxidation status of crude oil is analyzed in combination with the changes in flue gas components.

[0032] The aforementioned back pressure module is composed of a high-pressure plunger-type back pressure valve 2 and a low-pressure snap ring-type back pressure valve 8. The back pressure system formed by combining the two types of back pressure valves has no restrictions on the phase state of the produced fluid, avoiding the disadvantages of the snap ring-type back pressure valve having too long a response time to the gas phase and the disadvantages of the plunger-type back pressure valve having large pressure fluctuations in the fluid.

[0033] The gas-liquid separation module consists of a primary gas-liquid separator 3, a water-cooling device 5, and a secondary gas-liquid separator 6. The primary gas-liquid separator 3 and the water-cooling device 5 work together to rapidly condense water vapor in the gas phase of the fire-driven products, achieving initial gas-liquid separation. The volume of the primary gas-liquid separator 3 needs to match the injection rate designed for the experiment, ensuring sufficient space for the separation of the gas and liquid phases in the flue gas produced during the experiment. The secondary gas-liquid separator 6 further separates the gas and liquid phases of the fire-driven products.

[0034] The gas analysis module consists of a drying tank 9, a quantitative air pump 11, and a flue gas analyzer 12. The drying tank 9 and the quantitative air pump 11 are connected by a three-way valve 10, which allows gas within the range of the flue gas analyzer 12 to be introduced into the flue gas analyzer 12, while excess gas is discharged from the three-way valve 10.

[0035] The drying tank 9, placed after the low-pressure snap-lock back pressure valve 8, serves as a pre-positioned protector for the gas analysis module. The quantitative extraction pump 11 extracts the gaseous products required for measurement by the flue gas analyzer 12 from the dried fire-driven flue gas flowing out of the low-pressure snap-lock back pressure valve 8. The flue gas analyzer 12 is equipped with a high-precision gas sensor, which provides real-time feedback on the gas composition produced in the experiment, significantly improving the measurement delay of the exhaust gas composition during high-pressure fire-driven experiments.

[0036] The detailed implementation method is as follows: Before the fire-driven experiment, nitrogen was introduced into the back pressure module, gas-liquid separation module and gas analysis module to maintain the pressure at 2mPa. The first valve 13 and the eighth valve 20 were closed to check the airtightness of the equipment. Before the experiment, the flue gas analyzer 12 in the gas analysis module is calibrated by purging the flue gas analyzer 12 with standard gas and observing whether the reading of the flue gas analyzer 12 is normal. Turn on the water cooling device 5 in the pipeline insulation and heat tracing tape and the gas-liquid separation module to keep the output pipeline at 60-70 degrees Celsius and the cooling pipeline at 5-10 degrees Celsius. During the experimental preparation phase, pressure is established in experimental device 1 and the back pressure module by closing the first valve 13. Opening the first valve 13 allows experimental device 1 to establish flow balance, and the back pressure is adjusted to meet the experimental design requirements. Specifically, the first-stage back pressure valve - high-pressure plunger-type back pressure valve - uses a hand-cranked pump to mix air and water to reach an experimental pressure (such as 10MPa). The second-stage back pressure valve - low-pressure snap ring-type back pressure valve 8 - requires gas at a certain pressure to enter the first-stage gas-liquid separator 3 and the second-stage gas-liquid separator 6. The pressure is set (1-2MPa) by adjusting the opening of the snap ring-type back pressure valve.

[0037] During the fire-drive experiment, the fire-drive product enters the first-stage gas-liquid separator 3 and the second-stage gas-liquid separator 6 sequentially through the high-pressure plunger back pressure valve 2. The liquid in the gas-liquid separator is discharged into the interface through the fourth valve 16 and the sixth valve 18. The gaseous product is introduced into the flue gas analyzer 12 by the quantitative pump 11 through the water cooling device 5, the low-pressure snap-lock back pressure valve 8 and the drying tank 9 to read the gas composition parameters, which are used as the basis for judgment in the fire-driven experiment. Maintain the above conditions until the experiment is completed. After the experiment is completed, safely depressurize experimental device 1, turn off flue gas analyzer 12, close the inlet and outlet valves, turn off the water cooling box and heating tape, clean the pipeline, and ventilate and dry the pipeline in preparation for the next experiment. The method for measuring the components of fire-driven exhaust gas, such as Figure 3 This is a schematic diagram of the gas component variation over time according to a specific embodiment of the present invention. The horizontal axis represents time in minutes, and the vertical axis represents the gas component as a volume percentage. Figure 3 As can be seen from the test, under the test conditions of 10mPa test pressure and 60m3 / (m3·h) ventilation intensity, the effective reading delay of flue gas analyzer 12 is about 7-8 minutes. Under the same test conditions, using only the back pressure of low-pressure snap ring back pressure valve 8, the effective reading delay of flue gas analyzer 12 is about 80 minutes.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for measuring the components of fire-driven exhaust gas under high-pressure conditions, characterized in that, The measurement system includes: Experimental setup (1), back pressure module, gas-liquid separation module and gas analysis module; The back pressure module includes: a high-pressure plunger-type back pressure valve (2) and a low-pressure snap ring-type back pressure valve (8). The high-pressure plunger back pressure valve (2) is a first-stage back pressure valve, placed in front of the gas-liquid separation module; The low-pressure snap ring back pressure valve (8) is a two-stage back pressure valve, placed after the gas-liquid separation module; One end of the high-pressure plunger back pressure valve (2) is connected to the output end of the experimental device (1) through the first valve (13), and the other end is connected to the gas-liquid separation module. One end of the low-pressure snap ring back pressure valve (8) is connected to the gas-liquid separation module, and the other end is connected to the gas analysis module; The gas-liquid separation module includes: a primary gas-liquid separator (3), a water cooling device (5), and a secondary gas-liquid separator (6). The first-stage gas-liquid separator (3) is connected to the other end of the high-pressure plunger back pressure valve (2) via the second valve (14). The upper end of the first-stage gas-liquid separator (3) is connected to the water cooling device (5) via the third valve (15). The water cooling device (5) is connected to the second-stage gas-liquid separator (6) via the fifth valve (17). The upper end of the second-stage gas-liquid separator (6) is connected to one end of the low-pressure snap ring back pressure valve (8) via the seventh valve (19).

2. The high-pressure fire-driven exhaust gas component measurement system according to claim 1, characterized in that, The lower end of the first-stage gas-liquid separator (3) controls the flow of liquid phase products in the pipeline to the first interface (4) through the fourth valve (16), and the lower end of the second-stage gas-liquid separator (6) controls the flow of liquid phase products in the pipeline to the second interface (7) through the sixth valve (18).

3. The high-pressure exhaust gas component measurement system according to claim 1, characterized in that, The gas analysis module includes: a drying tank (9), a quantitative air pump (11), and a flue gas analyzer (12). The drying tank (9) is connected to the other end of the low-pressure snap ring back pressure valve (8) via the eighth valve (20). The drying tank (9) is connected to the quantitative air pump (11) via the three-way valve (10). The quantitative air pump (11) is connected to the flue gas analyzer (12) via a pipeline.

4. The high-pressure fire-driven exhaust gas component measurement system according to claim 3, characterized in that, The flue gas analyzer (12) is equipped with a high-precision gas sensor with a measurement accuracy of ±0.01%.

5. A method for measuring the components of fire-driven exhaust gas under high-pressure conditions, based on the measurement system described in any one of claims 1-4, characterized in that, The measurement method includes the following steps: The high-pressure fire-driven experimental products were discharged from the experimental apparatus (1) to obtain a gas-liquid mixture sample; A high-pressure plunger-type back pressure valve (2) with a back pressure module is installed at the output end of the high-pressure fire-drive experimental device (1). This allows the fire-drive experimental product under high pressure to quickly reduce its pressure after passing through the high-pressure plunger-type back pressure valve (2), which serves as the first-stage back pressure valve. The gas-liquid mixture sample is depressurized, and the depressurized gas-liquid mixture sample is subjected to gas-liquid separation. The gas-liquid mixture sample is then passed through a first-stage gas-liquid separator (3) and a water cooling device (5) to rapidly condense the water vapor in the gas-liquid mixture sample and achieve preliminary gas-liquid separation. The gas-liquid mixture sample that has achieved preliminary gas-liquid separation is passed through a secondary gas-liquid separator (6) to further separate the gas-liquid mixture sample and obtain liquid phase products and gas phase products. This allows the gas and liquid phases of the fire-driving experiment product to be fully separated. The exhaust gas passes through the low-pressure snap-on back pressure valve (8) of the back pressure module. The low-pressure snap-on back pressure valve (8) is placed after the gas-liquid separation module to make the pressure of the gas phase product stable. The liquid phase product is discharged into the interface device, and the gas phase product is measured and analyzed.

6. The method for measuring the components of fire-driven exhaust gas under high pressure conditions according to claim 5, characterized in that, The specific steps for measuring and analyzing the gaseous products are as follows: The gaseous product is dried in a drying tank (9) to obtain the dried gaseous product; The required gas phase products are extracted from the dried gas phase products by a quantitative pump (11) and measured by a flue gas analyzer (12). The flue gas analyzer (12) measures and analyzes the gaseous products.

7. The method for measuring the components of fire-driven exhaust gas under high pressure conditions according to claim 5, characterized in that, The measurement method further includes the following steps: Nitrogen gas was introduced into the back pressure module, gas-liquid separation module, and gas analysis module, and an airtightness check was performed. The flue gas analyzer (12) in the gas analysis module was calibrated before the experiment using standard gas; Turn on the pipeline insulation heating tape and the water cooling device (5) in the gas-liquid separation module to keep the output pipeline at 60-70℃ and the cooling pipeline at 5-10℃; The back pressure of the experimental device (1) and the back pressure module is adjusted.

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