CN115582085A - A system and method for laboratory preparation of supercritical multi-component thermal fluid - Google Patents

Abstract

The invention discloses a system and a method for preparing supercritical multi-element thermal fluid in a laboratory. The system of the present invention comprises: high temperature high pressure batch autoclave, and 2 middle containers, sampling bag, computer and a test tube connected to high temperature high pressure batch autoclave respectively. The method comprises the following steps: adding reaction raw materials into a high-temperature high-pressure reaction kettle; and then heating and pressurizing to a supercritical state, introducing oxygen, reacting to generate supercritical multi-element thermal fluid, simultaneously recording temperature and pressure data in the reaction by a computer, collecting liquid products after the reaction by a test tube, and collecting gaseous products after the reaction by a sampling bag. The reaction heat release and carrying capacity of the supercritical multi-element thermal fluid is obtained through component analysis and experimental data analysis of the prepared supercritical multi-element thermal fluid. The invention effectively improves the application effect of the supercritical multi-element thermal fluid injection technology in the heavy oil reservoir, and the analysis result can be used as a reference for technicians in the heavy oil reservoir development field.

Description

A system and method for laboratory preparation of supercritical multi-component thermal fluid

technical field

The invention belongs to the technical field of offshore heavy oil thermal recovery, and relates to a system and method for preparing supercritical multi-element thermal fluid in a laboratory.

Background technique

As an important petroleum resource, heavy oil is widely distributed in the world. With the continuous growth of demand for oil, my country's efforts to develop heavy oil are gradually increasing. Supercritical multi-element thermal fluid has the characteristics of high solubility, high diffusion, and high reaction. In recent years, in order to improve the development effect of offshore heavy oil, the technology of supercritical multi-element thermal fluid injection for heavy oil production has been proposed and applied research has been carried out rapidly, laying a solid foundation for mine application. established a certain foundation.

When supercritical multi-component thermal fluid injection technology is used for offshore heavy oil production, the heating effect of supercritical multi-component thermal fluid on the reservoir is an important factor affecting the development effect of heavy oil, and the proportion of components in supercritical multi-component thermal fluid and When the temperature and pressure conditions change, the reaction heat release capacity and heat transfer capacity will also change, which in turn will affect the application effect of supercritical multi-component thermal fluid injection technology. Therefore, before the application of supercritical multi-component thermal fluid injection technology for heavy oil development, if supercritical multi-component thermal fluids with different raw material ratios and different temperature and pressure conditions can be prepared by a certain method, and the heat released and carried by the reaction The ability to analyze and optimize will effectively improve the application effect of this technology in heavy oil reservoirs. Therefore, there is an urgent need for a research method that can prepare supercritical multi-component thermal fluids in the laboratory under different raw material ratios and different temperature and pressure conditions, and analyze their reaction heat release and heat carrying capacity.

Contents of the invention

The object of the present invention is to provide a system and method for laboratory preparation of supercritical multi-component thermal fluid.

The invention can conveniently prepare supercritical multi-component thermal fluid under laboratory conditions. By controlling the ratio of raw materials and the temperature and pressure conditions of the reactor during the experiment, supercritical fluids under different temperature and pressure conditions and different component ratios can be prepared. Critical Multicomponent Thermal Fluids. After the experiment, the composition of the produced supercritical multivariate thermal fluid was determined using a chromatograph, combined with the temperature and pressure data of the reactor recorded during the preparation process, it was possible to further analyze the composition of the supercritical multicomponent thermal fluid prepared under different raw material ratios and different temperature and pressure conditions. The reaction heat release and carried heat are analyzed, and then the feed ratio and temperature and pressure conditions in the process of preparing supercritical multi-component thermal fluid are optimized. The analysis results can be used as a reference for technical personnel in the field of heavy oil reservoir development.

The invention provides a system for laboratory preparation of supercritical multi-element thermal fluid, comprising:

A high-temperature and high-pressure reaction kettle, and 2 intermediate containers, a sampling bag, a computer and a test tube respectively connected to the high-temperature and high-pressure reaction kettle;

A one-way valve is arranged on the pipeline between the two intermediate containers and the high-temperature and high-pressure reactor; the two intermediate containers are driven by high-precision constant-pressure constant-flow pumps;

The outlet pressure of the sampling bag is controlled by a hand pump, and a back pressure valve is set between the sampling bag and the hand pump;

A temperature and pressure probe is arranged on the pipeline between the computer and the high temperature and high pressure reactor;

The above components are all connected by pipelines, and valves are arranged on the pipelines.

In the present invention, the high temperature and high pressure reactor is used to control temperature and pressure conditions to prepare supercritical multi-component thermal fluid; the test tube is used to collect the liquid product after reaction;

The two intermediate containers are used to provide oxygen and nitrogen respectively;

The sampling bag is used to collect the gaseous product after the reaction;

The computer is used for temperature and pressure data recording of the reaction process in the high temperature and high pressure reactor.

In the above-mentioned system for preparing supercritical multi-component thermal fluid in the laboratory, the system for preparing supercritical multi-component thermal fluid in the laboratory further includes a chromatograph for analyzing the components of the supercritical multi-component thermal fluid.

In the present invention, by controlling raw materials (including oil and water) and nitrogen to pass into the high-temperature and high-pressure reactor, heating and pressurizing to make it into a supercritical state, and then feeding oxygen into it, the reaction takes place in the high-temperature and high-pressure reactor. The supercritical multicomponent thermal fluid is generated.

The present invention also provides a method for preparing a supercritical multi-component thermal fluid in a laboratory using the above-mentioned system for preparing a supercritical multi-component thermal fluid in a laboratory, comprising the following steps:

Add the reaction raw materials (including oil and water) into the high-temperature and high-pressure reactor before the experiment starts; then feed nitrogen into the high-temperature and high-pressure reactor through one of the intermediate containers, and heat and pressurize after rising to the design pressure After reaching the supercritical state, oxygen is passed into it through another intermediate container, and the supercritical multi-component thermal fluid is generated by controlling the ratio of the raw material to the oxygen and the temperature and pressure conditions in the high-temperature and high-pressure reactor. At the same time, the computer records the temperature and pressure data in the reaction, the liquid product after the reaction is collected by the test tube, and the gaseous product after the reaction is collected by the sampling bag.

In the present invention, the purpose of feeding the nitrogen is to confirm the tightness of the high-temperature and high-pressure reactor and to remove the air therein, and to continue feeding to the required design pressure.

The present invention further provides a method for preparing a supercritical multi-component thermal fluid in a laboratory and analyzing its reaction heat release and heat carrying capacity, comprising the following steps:

(1) Prepare supercritical multi-element thermal fluid by adopting the system for preparing supercritical multi-element thermal fluid in the laboratory

Add the reaction raw materials (oil, water) into the high-temperature and high-pressure reactor before the experiment begins; then pass nitrogen into the high-temperature and high-pressure reactor through one of the intermediate containers, and after rising to the design pressure, heat and pressurize to After the supercritical state, oxygen is passed into it through another intermediate container, and a supercritical multi-component thermal fluid is generated by controlling the ratio of the raw material to the oxygen and the temperature and pressure conditions in the high-temperature and high-pressure reactor. At the same time, the computer records the temperature and pressure data in the reaction, the test tube collects the liquid product after the reaction, and the sampling bag collects the gaseous product after the reaction;

(2) Analysis of components of supercritical multi-element thermal fluid

Using a chromatograph to analyze the components of the liquid product and the gaseous product in the collected supercritical multi-component thermal fluid, and clarify the proportion of each component;

(3) Experimental data analysis

Summarize the temperature and pressure data obtained in the experiment, draw the curves of the temperature and time and the pressure and time; and combine the analysis results of the chromatograph components to analyze the proportion of each component and the The influence of temperature and pressure on the exothermic heat of reaction and the heat carried by the supercritical multi-component thermal fluid, that is, the data of the exothermic heat and heat-carrying capacity of the supercritical multi-component thermal fluid are obtained.

In the present invention, the proportions of the various components are obtained according to the measurement results of the chromatograph, and the data of the exothermic heat of the reaction and the heat carried are calculated through the reaction temperature and pressure curves respectively, and the calculation method is well known to professionals in the field conventional method.

The beneficial effects of the present invention are as follows:

The present invention innovatively designs a system and method for preparing a supercritical multi-element thermal fluid in a laboratory. The invention can be used to prepare supercritical multi-component thermal fluids with different raw material ratios and different temperature and pressure conditions before carrying out the development and production practice of injecting supercritical multi-component thermal fluids, and analyze and optimize their reaction heat release and heat-carrying capacity, effectively The application effect of supercritical multi-component thermal fluid injection technology in heavy oil reservoirs has been improved, and the analysis results can be used as a reference for technical personnel in the field of heavy oil reservoir development.

Description of drawings

Fig. 1 is the flow chart of the system of the present invention used in laboratory preparation of supercritical multi-element thermal fluid.

Each label in Figure 1 is as follows:

1 sampling bag; 2 temperature and pressure probe; 3 computer; 4 one-way valve; 5 intermediate container (oxygen); 6 intermediate container (nitrogen); 7 high-precision constant pressure and constant flow pump; 8 test tube; 9 hand pump; Back pressure valve; 11 high temperature and high pressure reaction kettle.

Fig. 2 is a technical flow chart of the method for preparing supercritical multi-component thermal fluid in the laboratory of the present invention and analyzing its reaction heat release and heat carrying capacity.

Fig. 3 is the variation curve of the temperature in the kettle with the reaction time when the ratio of oil to water is different.

Fig. 4 is the variation curve of the pressure in the kettle with the reaction time when the ratio of oil to water is different.

Figure 5 is a curve showing the variation of the temperature in the kettle with the reaction time under different temperature and pressure conditions.

Figure 6 is a curve showing the variation of the pressure in the kettle with the reaction time at different oil-water ratios.

detailed description

The experimental methods used in the following examples are conventional methods unless otherwise specified.

The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

In order to facilitate those skilled in the art to understand the technical solution, the present invention will be further described below in conjunction with the accompanying drawings in the embodiments, and the content of the described embodiments does not limit the present invention. All other embodiments obtained by those skilled in the art without creative efforts on the basis of the present invention fall within the protection scope of the present invention.

As shown in FIG. 1 , it is a flow chart of a system for laboratory preparation of supercritical multi-element thermal fluid provided by the present invention. A kind of system that is used for laboratory preparation supercritical multi-element thermal fluid provided by the present invention comprises: high temperature and pressure reactor 11, and 2 intermediate containers (being intermediate container (oxygen) 5 and Intermediate container (nitrogen) 6), sampling bag 1, computer 3 and a test tube 8.

Among them, the high-temperature and high-pressure reactor 11 is used to control the temperature and pressure conditions to prepare supercritical multi-component thermal fluid; a check valve 4 is arranged on the pipeline between the two intermediate containers and the high-temperature and high-pressure reactor 11;

A test tube 8 is connected to the high temperature and high pressure reactor 11 through a pipeline for collecting the liquid product after the reaction. The sampling bag 1 is used to collect the gaseous products after the reaction, and the outlet pressure is controlled by the hand pump, and a back pressure valve 10 is set between the sampling bag 1 and the hand pump 9;

The computer 3 is used for temperature and pressure data recording of the reaction process in the high-temperature and high-pressure reactor 11, and a temperature-pressure probe 2 is set on the pipeline between the computer 3 and the high-temperature and high-pressure reactor 11;

The intermediate container (oxygen) 5 and the intermediate container (nitrogen) 6 are used to provide oxygen and nitrogen respectively, both of which are driven by a high-precision constant-pressure constant-flow pump 7;

The above components are all connected by pipelines, and valves are arranged on the pipelines.

Further, the system for preparing supercritical multi-element thermal fluid in the laboratory also includes a chromatograph, which is used to analyze the components of the supercritical multi-element thermal fluid.

A method for laboratory preparation of a supercritical multi-element thermal fluid of the present invention specifically comprises the following steps:

Before the experiment begins, the reaction raw materials (comprising oil and water) are added in the high-temperature and high-pressure reactor 11; the raw materials of the supercritical multi-component thermal fluid in the sampling bag 1 are added in the high-temperature and high-pressure reactor 11; Nitrogen is introduced into the high-temperature and high-pressure reactor 11. After rising to the design pressure, after heating and pressurizing to a supercritical state, oxygen is introduced into it through the intermediate container (oxygen) 5, and the ratio of raw materials (oil and water) to oxygen is controlled. And the temperature and pressure conditions in the high-temperature and high-pressure reactor 11 react to generate a supercritical multi-component thermal fluid. At the same time, the computer 3 records the temperature and pressure data in the reaction, the test tube 8 collects the liquid product after the reaction, and the sampling bag 1 collects the gaseous product after the reaction. product.

As shown in Figure 2, it is a technical flow chart of the method for preparing supercritical multi-component thermal fluid in the laboratory of the present invention and analyzing its reaction heat release and heat carrying capacity.

The present invention further provides a method for preparing a supercritical multi-element thermal fluid in a laboratory and analyzing its reaction heat release and heat-carrying capacity, comprising the following steps: including preparation of supercritical multi-element thermal fluid, analysis of components of supercritical multi-element thermal fluid and experiment There are three parts to the data analysis. The preparation of supercritical multi-component thermal fluid refers to adding a certain proportion of raw materials into a high-temperature and high-pressure reactor, and then heating and pressurizing the reactor according to the set conditions, so that the raw materials react in the reactor to form a supercritical multi-component thermal fluid. By controlling the proportion of raw materials and the temperature and pressure conditions of the reactor, supercritical multi-component thermal fluids with different proportions and different temperature and pressure conditions can be generated; supercritical multi-component thermal fluid component analysis refers to the component analysis of the collected reaction products to determine The ratio of each component in the generated supercritical multi-component thermal fluid; the analysis of experimental data means that after determining the ratio of each component in the generated supercritical multi-component thermal fluid, combined with the temperature and pressure data of the reactor recorded during the preparation process, the different The reaction heat release and heat carrying capacity of the supercritical multi-component thermal fluid generated under different temperature and pressure conditions were analyzed. Specifically include the following steps:

(1) Preparation of supercritical multi-component thermal fluid by using a system for preparing supercritical multi-component thermal fluid in the laboratory

Before the experiment starts, the reaction raw materials (comprising oil and water) are added in the high-temperature and high-pressure reactor 11; After the critical state, oxygen is introduced into it through the intermediate container (oxygen) 5, and the supercritical multi-component thermal fluid is generated through the controlled ratio of raw materials (oil and water) to oxygen and the temperature and pressure conditions in the high-temperature and high-pressure reactor 11. At the same time, the computer 3. Record the temperature and pressure data in the reaction, the test tube 8 collects the liquid product after the reaction, and the sampling bag 1 collects the gaseous product after the reaction;

(2) Analysis of components of supercritical multi-element thermal fluid

Use a chromatograph to analyze the components of the liquid products and gaseous products in the collected supercritical multi-component thermal fluid, and clarify the proportion of each component;

(3) Experimental data analysis

Summarize the temperature and pressure data obtained in the experiment, draw the curves of temperature and time and pressure and time; and combine the analysis results of the components of the chromatograph to analyze the proportion of each component and the effect of temperature and pressure on the reaction exotherm and supercritical The influence of the heat carried by the multi-component thermal fluid, that is, the data of the heat release and heat-carrying capacity of the supercritical multi-component thermal fluid are obtained.

Example 1

A specific laboratory method of the present invention prepares a supercritical multi-component thermal fluid, specifically comprising the following steps:

(1) Preparation of supercritical multi-component thermal fluid

Using the supercritical multi-component thermal fluid preparation system shown in Figure 1 to prepare supercritical multi-component thermal fluid, the specific steps are as follows:

① Before the start of the experiment, use a booster device (specifically a booster pump to compress the gas and then pump it into the intermediate container) to pump a sufficient amount (20MPa) of nitrogen and oxygen into the corresponding intermediate container, and close the inlet and outlet valves;

② Connect the experimental equipment according to the experimental flow chart. After the connection is completed and the sealing of the experimental system is confirmed, close all valves;

③ Open the sealing cover of the high-temperature and high-pressure reactor 11, and after confirming that there is no residue in the high-temperature and high-pressure reactor 11, put the reaction raw materials into the high-temperature and high-pressure reactor 11 according to the ratio of the experimental design. After feeding is completed, close the high temperature and high pressure reactor 11 sealing cover;

4. Lightly open the outlet valve of the intermediate container (nitrogen) 6, and open the inlet of the high-temperature and high-pressure reactor 11, and fill nitrogen into the high-temperature and high-pressure reactor 11 to ensure that the high-temperature and high-pressure reactor 11 is sealed;

⑤ After confirming that the high-temperature and high-pressure reactor 11 is sealed, open the outlet valve and sampling valve of the high-temperature and high-pressure reactor 11 in sequence, and the back pressure is 0 MPa, and continuously fill nitrogen (more than 10 minutes) to empty the air in the reactor;

⑥ After emptying the air in the high-temperature and high-pressure reactor 11, close the sampling valve and the outlet valve of the high-temperature and high-pressure reactor 11, and continue to fill the high-temperature and high-pressure reactor 11 with nitrogen to the experimental design pressure;

⑦ After the pressure of the high-temperature and high-pressure reactor 11 rises to the design pressure, close all valves, turn on the power supply of the high-temperature and high-pressure reactor 11, and start heating;

⑧After the temperature and pressure inside the high-temperature and high-pressure reactor 11 reach the supercritical condition, turn off the heating, turn on the shaking, and turn on the high-precision constant pressure and constant-flow pump 7 to pressurize the intermediate container (oxygen) 5, and fill the high-temperature and high-pressure reactor 11 with Oxygen until the end of the reaction, real-time monitoring and recording of the temperature and pressure in the high-temperature and high-pressure reactor 11 during the whole reaction;

⑨ After the reaction, let the high-temperature and high-pressure reactor 11 stand still to cool down. After the temperature inside the high-temperature and high-pressure reactor 11 drops to normal temperature, slightly open the valve of the sampling port, and the sampling bag 1 collects the gas samples in the reactor, and then releases the pressure to open the high-temperature and high-pressure reactor 11 , Test tube 8 collects liquid and solids (if any) in the kettle.

Note: During the experiment, feed can be continuously fed into the reactor from the liquid outlet valve below the high-temperature and high-pressure reactor 11 to maintain the continuous occurrence of the reaction and continuously generate supercritical multi-element thermal fluid.

(2) Analysis of components of supercritical multi-element thermal fluid

Use a chromatograph to analyze the components of the collected samples in the kettle to clarify the proportion of each component.

(3) Experimental data analysis

The temperature and pressure data obtained from the experiment were summarized and drawn into a graph, and combined with the component analysis results of the chromatographic instrument, the proportion of each component and the influence of temperature and pressure on the reaction exotherm and the heat carried by the supercritical multi-element thermal fluid were analyzed.

0# diesel oil, water and oxygen were selected as raw materials to prepare supercritical multi-component thermal fluids with different raw material ratios and different temperature and pressure conditions, and their reaction heat release and heat transfer were analyzed.

Table 1 Experimental parameters of supercritical water-diesel reaction under different oil-water ratios

serial number Reactant initial temperature and pressure conditions 1 45mL water + 5mL diesel oil + pure oxygen 400℃/25MPa 2 28.3mL water + 5mL diesel oil + pure oxygen 400℃/25MPa 3 20mL water + 5mL diesel oil + pure oxygen 400℃/25MPa 4 15mL water + 5mL diesel oil + pure oxygen 400℃/25MPa 5 11.67mL water + 5mL diesel oil + pure oxygen 400℃/25MPa

The raw materials and control conditions are shown in Table 1. The experiment was carried out according to the above method steps, and the experimental data were recorded.

The sampling samples were analyzed one by one, and the analysis results showed that under the condition of sufficient oxygen, diesel oil could be completely reacted to generate supercritical multi-component thermal fluid, and there was no diesel residue in the sampling liquid. It can be seen from Figure 3 that the higher the volume ratio of diesel, the higher the maximum temperature that can be reached in the tank. In contrast, when the proportion of diesel is low, the heat released is constant and the system needs more heat to raise the temperature. Therefore, the maximum temperature in the kettle body is lower.

Based on the composition of the produced fluid, calculate the heat carried by the produced supercritical multi-element thermal fluid (Table 2). Only from the perspective of the heat carried by the produced fluid, the higher the proportion of water, the higher the heat carried by the product. It is mainly supercritical water that carries heat, and the proportion of supercritical water is the highest at this time. It can be seen from Figure 4 that the higher the proportion of supercritical water in the product, the greater the heat capacity, the less condensation during the cooling process, and the longer the pressure can be maintained.

Table 2 The heat carried by the reaction product under different oil-water ratio conditions

Example 2

0# diesel oil, water and oxygen were selected as raw materials to prepare supercritical multi-component thermal fluids with different raw material ratios and different temperature and pressure conditions. The raw materials and control conditions are shown in Table 3, and the experiment was carried out according to the method in Example 1 of the present invention, and the experimental data were recorded.

Table 3 Experimental parameters of supercritical water-diesel reaction under different temperature and pressure conditions

serial number Reactant initial temperature and pressure conditions 6 45mL water + 5mL diesel oil + pure oxygen 400℃/23MPa 7 45mL water + 5mL diesel oil + pure oxygen 400℃/25MPa 8 45mL water + 5mL diesel oil + pure oxygen 450℃/25MPa 9 45mL water + 5mL diesel oil + pure oxygen 500℃/25MPa 10 45mL water + 5mL diesel oil + pure oxygen 500℃/23MPa

The experimental results are shown in Figure 5 and Figure 6. Comparing the experimental process of different initial temperature and pressure conditions, the temperature rise in the kettle is very close. Considering that the ratio of oil to water is the same, it can be considered that the heat release of the reaction is close, and the initial temperature and pressure conditions have an impact on the reaction. Smaller, the enthalpy of the thermal fluid converted to the same temperature and pressure is very close, with an average of 1962.36J/g.

Claims (4)

1. A system for laboratory preparation of supercritical multi-component thermal fluid, characterized in that, comprising: A high-temperature and high-pressure reaction kettle, and 2 intermediate containers, a sampling bag, a computer and a test tube respectively connected to the high-temperature and high-pressure reaction kettle; A one-way valve is arranged on the pipeline between the two intermediate containers and the high-temperature and high-pressure reactor; the two intermediate containers are driven by high-precision constant-pressure constant-flow pumps; The outlet pressure of the sampling bag is controlled by a hand pump, and a back pressure valve is set between the sampling bag and the hand pump; A temperature and pressure probe is arranged on the pipeline between the computer and the high temperature and high pressure reactor; The above components are all connected by pipelines, and valves are arranged on the pipelines. 2. the system for laboratory preparation of supercritical multi-element thermal fluid according to claim 1, is characterized in that, the described system for laboratory preparation of supercritical multi-element thermal fluid also comprises chromatograph, for analyzing supercritical Components of critical multicomponent thermal fluids. 3. a method for preparing a supercritical multi-element thermal fluid in a laboratory using the system laboratory for preparing a supercritical multi-element thermal fluid according to claim 1, comprising the steps of: Add the reaction raw materials into the high-temperature and high-pressure reaction kettle before the experiment starts; then pass nitrogen into the high-temperature and high-pressure reaction kettle through one of the intermediate containers, and after rising to the design pressure, heat and pressurize to the supercritical state and pass Oxygen is passed into the other intermediate container, and supercritical multi-component thermal fluid is generated by controlling the ratio of the raw material to the oxygen and the temperature and pressure conditions in the high-temperature and high-pressure reactor. At the same time, the computer records For the temperature and pressure data in the reaction, the liquid product after the reaction is collected by the test tube, and the gaseous product after the reaction is collected by the sampling bag. 4. A method for laboratory preparation of supercritical multi-element thermal fluid and analysis of its reaction exothermic and heat-carrying capacity, comprising the steps of: (1) adopt claim 1 or 2 to prepare supercritical multi-element thermal fluid for the system of laboratory preparation supercritical multi-element thermal fluid Add the reaction raw materials into the high-temperature and high-pressure reaction kettle before the experiment starts; then pass nitrogen into the high-temperature and high-pressure reaction kettle through one of the intermediate containers, and after rising to the design pressure, heat and pressurize to the supercritical state and pass Oxygen is passed into the other intermediate container, and supercritical multi-component thermal fluid is generated by controlling the ratio of the raw material to the oxygen and the temperature and pressure conditions in the high-temperature and high-pressure reactor. At the same time, the computer records Temperature and pressure data in the reaction, the liquid product after the reaction is collected by the test tube, and the gaseous product after the reaction is collected by the sampling bag; (2) Analysis of components of supercritical multi-element thermal fluid Using a chromatograph to analyze the components of the liquid product and the gaseous product in the collected supercritical multi-component thermal fluid, and clarify the proportion of each component; (3) Experimental data analysis Summarize the temperature and pressure data obtained in the experiment, draw the curves of the temperature and time and the pressure and time; and combine the analysis results of the chromatograph components to analyze the proportion of each component and the The influence of temperature and pressure on the exothermic heat of reaction and the heat carried by the supercritical multi-component thermal fluid, that is, the data of the exothermic heat and heat-carrying capacity of the supercritical multi-component thermal fluid are obtained.

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