Supercritical carbon dioxide long-distance supercharging device and method

Abstract

According to the supercritical carbon dioxide long-distance supercharging device and method, one end of a second auxiliary pipe of the device is connected to one end of a first auxiliary pipe through an electromagnetic valve, and the other end of the first auxiliary pipe and the other end of the second auxiliary pipe are connected to a carbon dioxide pipeline through a first one-way valve and a second one-way valve respectively; the three-way valve is connected to the first auxiliary pipe and the second auxiliary pipe through a third one-way valve and a fourth one-way valve respectively, the air inlet end of the three-way valve is connected to the booster jar, a pressure sensor is arranged in the first auxiliary pipe, when the pressure in the carbon dioxide pipeline is too low, the booster jar is started, and the pressure enters the first auxiliary pipe through the three-way valve and the third one-way valve; and then the gas enters the carbon dioxide pipeline through the first one-way valve so as to increase the pressure in the carbon dioxide pipeline. According to the supercritical carbon dioxide long-distance supercharging device and method, no special booster pump needs to be arranged, meanwhile, the efficiency can be guaranteed, and the stability of long-distance continuous conveying is greatly improved by controlling the temperature of carbon dioxide in the CO2 pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide transportation, and particularly to a supercritical carbon dioxide long-distance pressurization device and method. Background Art

[0002] Carbon dioxide in a state where the temperature is higher than the critical temperature Tc = 31.26 °C and the pressure is higher than the critical pressure Pc = 72.9 atm is called supercritical carbon dioxide. The properties of supercritical carbon dioxide change during the production process. Its density is close to that of a liquid, its viscosity is close to that of a gas, and its diffusion coefficient is 100 times that of a liquid. Therefore, it has amazing solubility. It can dissolve various substances and then extract the effective components, having broad application prospects. Supercritical carbon dioxide is one of the most widely studied fluids. How to transport supercritical carbon dioxide over a long distance is an urgent problem to be solved.

[0003] In the Chinese patent application with the application number: CN202020610215.6, there is a long-distance liquid carbon dioxide transportation system, including a liquid carbon dioxide gas source, an electric three-way gate valve, a gas-liquid converter, a booster pump, an electric control valve, and a transportation pipeline. The three ends of the electric three-way gate valve are respectively connected to the liquid carbon dioxide gas source, the gas-liquid converter, and the booster pump. The gas-liquid converter and the booster pump are both connected to the electric control valve. The transportation pipeline is used to connect the liquid carbon dioxide gas source, the electric three-way gate valve, the gas-liquid converter, the booster pump, and the electric control valve, and to introduce carbon dioxide into the goaf underground. In this utility model, the booster pump and the electric control valve ensure that there is sufficient pressure in the long-distance transportation system to avoid the phenomenon of pipeline icing and solidification. This patent mainly uses the booster pump and the electric control valve to ensure that there is sufficient pressure in the long-distance transportation system to avoid the phenomenon of pipeline icing and solidification. However, when transporting over a long distance, only setting the boosting pressure at the mining side is significantly insufficient. Therefore, it is necessary to equip a pressurization device at regular intervals on the transportation pipeline. However, investing in multiple booster pumps is costly, and using the electric control valve to adjust the flow rate of carbon dioxide requires reducing the flow rate to increase the pressure, thereby affecting the transportation efficiency.

[0004] In the Chinese patent application with the application number: CN202222997832.8, it involves an ultra-long-distance and low-energy pneumatic conveying system, including a booster and a silo. The outlet of the booster is connected to the inlet of the gas storage tank, and the outlet of the gas storage tank is connected to the compressed air pipe. In the present utility model, a material distribution pipe anti-blocking device is added between the main material conveying pipe and the sub-material conveying pipe. The material distribution pipe anti-blocking device can add an elastic annular airbag on the inner wall of the expansion pipe. When the internal air pressure in the main material conveying pipe increases, the elastic annular airbag can be compressed. When the internal air pressure in the main material conveying pipe decreases, the elastic annular airbag can rebound. During the compression and rebound process of the elastic annular airbag, the surface of the elastic annular airbag can generate deformation, so as to assist in peeling off the raw materials attached to the surface of the elastic annular airbag, thereby avoiding excessive accumulation of raw materials on the inner wall of the port of the sub-material conveying pipe and preventing the pneumatic conveying system from easily blocking.

[0005] In the Chinese patent application with the application number: CN201610638477.1, it involves a liquid carbon dioxide filling system, including a flatbed truck, on which a liquid carbon dioxide storage tank and a push rod box are fixed; the storage tank includes a liquid injection port and a liquid outlet; on the outside of the push rod box, a carbon dioxide booster pump and two relatively arranged carbon dioxide storage pipe filling frames are fixed; a storage pipe can be installed on the carbon dioxide storage pipe filling frame; the carbon dioxide booster pump includes a booster cylinder body, a piston, a driving gas inlet, a boosting liquid inlet and a boosting liquid outlet; a filling controller is arranged on the carbon dioxide storage pipe filling frame; the liquid outlet of the liquid carbon dioxide storage tank is connected to the boosting liquid inlet of the carbon dioxide booster pump by the first pipeline, the boosting liquid outlet is connected to the filling controller by the third pipeline, and the underground compressed air system is connected to the driving gas inlet by the second pipeline. This invention is convenient to operate, has strong adaptability, saves energy and has high operation efficiency.

[0006] In the Chinese patent application with the application number: CN201420435397.2, it involves an ultra-long-distance carbon dioxide pneumatic conveying system, which includes a gas storage tank, a silo and N≥1 main material conveying pipes. When N≥2, N≥2 main material conveying pipes are arranged in parallel. The output end of each main material conveying pipe is connected to the silo, and at least two sub-material conveying pipes are arranged in parallel along the running direction of the material on each main material conveying pipe. Each sub-material conveying pipe is connected with a set of feeding devices; a horizontal compressed air pipe is connected to the gas storage tank, and a plurality of pneumatic conveyors are evenly arranged between the compressed air pipe and the main material conveying pipe; the upper end of the silo is connected with a dust collector, the dust collector is connected with an ash collecting box through a pipeline, and the ash collecting box is connected with a water seal pipe through a pipeline. This pneumatic conveying system has low cost and is not easy to block.

[0007] The above prior arts are all quite different from the present invention and fail to solve the technical problems we want to solve. Therefore, we have invented a new supercritical carbon dioxide long-distance boosting device and method. Summary of the invention

[0008] The object of the present invention is to provide a supercritical carbon dioxide long-distance pressurization device and method which does not require a special booster pump and can ensure efficiency.

[0009] The object of the present invention can be achieved by the following technical measures: a supercritical carbon dioxide long-distance pressurizing device, which comprises a sub-pipe 1, a sub-pipe 2, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a solenoid valve, a three-way valve and a pressurizing tank, one end of the sub-pipe 2 is connected to one end of the sub-pipe 1 through the solenoid valve, the other ends of the sub-pipe 1 and the sub-pipe 2 are connected to the carbon dioxide pipeline through the first one-way valve and the second one-way valve respectively, the three-way valve is connected to the sub-pipe 1 and the sub-pipe 2 through the third one-way valve and the fourth one-way valve respectively, the air inlet end of the three-way valve is connected to the pressurizing tank, a pressure sensor is provided in the sub-pipe 1, when the pressure in the carbon dioxide pipeline is too low, the pressurizing tank is activated, the pressure enters the sub-pipe 1 through the three-way valve and the third one-way valve, and then enters the carbon dioxide pipeline through the first one-way valve to increase the pressure in the carbon dioxide pipeline.

[0010] The purpose of the present invention can also be achieved by the following technical measures:

[0011] The supercritical carbon dioxide long-distance pressurizing device also includes a sheath, and the auxiliary pipe 1 and the auxiliary pipe 2 are both located in the sheath.

[0012] The left side of the protective sleeve is provided with a fixing groove for the carbon dioxide pipeline to be clamped, and an opening can be opened to fix it by bolts.

[0013] The boost tank is provided with a storage battery.

[0014] The supercritical carbon dioxide long-distance boosting device also includes a first temperature control component, which is located in the auxiliary pipe 2 and includes a mounting frame, in which a connecting bearing is provided, and a rotor shaft and a heating shaft are docked in the connecting bearing, and both are provided with docking heating rods.

[0015] The outer end of the rotor shaft is provided with a fan blade group, the fan blade group is provided with a heat sink connected to the heating rod, and the outer side of the rotor shaft is provided with a stator connected to the battery.

[0016] A temperature sensor is provided on the mounting frame, and the pressure in the auxiliary pipe 2 drives the fan blade group to rotate, storing a certain amount of electricity inside the battery, and automatically opening the solenoid valve on the auxiliary pipe 2 at a regular interval. When the temperature sensor detects that the temperature in the carbon dioxide pipeline is too low, the battery transmits electricity to the heating shaft, so that the heating rod is heated and the heat is transmitted to the heat sink on the fan blade group, thereby adjusting the temperature of the supercritical carbon dioxide flowing through.

[0017] The supercritical carbon dioxide long-distance boosting device also includes a second temperature control component, which is located in the auxiliary pipe and includes a mounting frame, a connecting bearing is provided in the mounting frame, a rotor shaft is docked in the connecting bearing, a fan blade group is provided at the outer end of the rotor shaft, and a stator connected to the battery is provided on the outer side of the rotor shaft.

[0018] The pressure sensor is arranged on the mounting frame, and the pressure in the auxiliary pipe drives the fan blade group to rotate, so that a certain amount of electricity is stored in the storage battery.

[0019] The object of the present invention can also be achieved by the following technical measures: a supercritical carbon dioxide remote pressurization method, the supercritical carbon dioxide remote pressurization method adopts a supercritical carbon dioxide remote pressurization device, comprising:

[0020] Step 1: Determine the pressurization points at intervals on the supercritical carbon dioxide pipeline and install the sheath on the carbon dioxide pipeline;

[0021] Step 2: Set the booster tank connected to the three-way valve on the carbon dioxide pipeline side;

[0022] Step 3: When the pressure in the carbon dioxide pipeline is too low, the booster tank is activated to increase the pressure in the carbon dioxide pipeline;

[0023] Step 4, periodically and automatically open the solenoid valve on the auxiliary pipe 2, and when the temperature sensor detects that the temperature in the carbon dioxide pipeline is too low, control the temperature of the supercritical carbon dioxide in the carbon dioxide pipeline.

[0024] The purpose of the present invention can also be achieved by the following technical measures:

[0025] In step 1, pressurization points are determined at intervals on the supercritical carbon dioxide pipeline, two groups of holes are opened, and then a 10-20m long sheath is put on the carbon dioxide pipeline, and the first one-way valve and the second one-way valve are connected to the holes.

[0026] In step 3, when the pressure in the carbon dioxide pipeline is too low, the booster tank is activated, and the pressure enters the auxiliary pipe 1 through the three-way valve and the third one-way valve, and then enters the carbon dioxide pipeline through the first one-way valve to increase the pressure in the carbon dioxide pipeline.

[0027] In step 4, a certain amount of electricity is stored inside the battery, and the solenoid valve on the auxiliary pipe 2 is automatically opened periodically. When the temperature sensor detects that the temperature in the carbon dioxide pipeline is too low, the battery transmits electricity to the heating shaft, causing the heating rod to heat up and transfer the heat to the heat sink on the fan blade group, thereby regulating the temperature of the supercritical carbon dioxide flowing through.

[0028] The supercritical carbon dioxide long-distance pressurization device and method in the present invention have the following technical advantages compared with the prior art:

[0029] 1. In the present invention, multiple sets of low-cost pressurization facilities are arranged at a fixed distance for sectional pressurization, greatly reducing the input cost of using a pump to pressurize. Compared with valve pressure regulation, this method does not affect the flow rate of transportation. Multiple sets of sectional pressurization have low cost and do not affect the flow rate.

[0030] 2. In the present invention, by controlling the temperature of carbon dioxide in the 2 pipe, the problem of unstable pressure when injecting into the subsequent heater is solved. Especially when continuously transporting in various outdoor complex environments, the stability of long-distance continuous transportation is greatly improved.

[0031] 3. By using a pressurization tank that can regularly supplement pressure to replace the use of a pressurization pump, only a separate pressurization pump is required for maintenance, and the operation can be carried out during regular maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is an installation schematic diagram of a specific embodiment of the supercritical carbon dioxide long-distance pressurization device of the present invention;

[0033] Figure 2 is a connection schematic diagram of a specific embodiment of the supercritical carbon dioxide long-distance pressurization device of the present invention;

[0034] Figure 3 is a temperature control schematic diagram of a specific embodiment of the supercritical carbon dioxide long-distance pressurization device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] It should be noted that the following detailed description is exemplary and is intended to provide further illustration of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, and / or combinations thereof.

[0037] The supercritical carbon dioxide long-distance pressurization device of the present invention includes a pressurization component and a temperature control component. Among them, the pressurization component includes a sheath, a first sub-pipe and a second sub-pipe arranged in the sheath.

[0038] One end of the auxiliary pipe 2 is connected to one end of the auxiliary pipe 1 through a solenoid valve, and the other ends of the auxiliary pipe 1 and the auxiliary pipe 2 are connected to the carbon dioxide pipeline through a one-way valve respectively.

[0039] The auxiliary pipe 1 and the auxiliary pipe 2 are connected to the three-way valve through two other groups of one-way valves respectively, and the air inlet end of the three-way valve is connected to the boost tank.

[0040] The left side of the sheath is provided with a fixing groove for the supercritical carbon dioxide pipeline to be clamped. An opening can be opened and fixed with bolts. The sheath also plays a protective role. Except for the carbon dioxide pipeline, everything else is integrally formed inside the sheath.

[0041] A storage battery is provided on the boost tank.

[0042] Wherein, the temperature control component includes a mounting frame installed in the auxiliary pipe 2, a connecting bearing is provided in the mounting frame, a rotor shaft and a heating shaft are butt-jointedly arranged in the connecting bearing, and both are provided with butt-jointed heating rods.

[0043] A fan blade group is arranged at the outer end of the rotor shaft, and a heat sink connected to the heating rod is arranged on the fan blade group.

[0044] The mounting frames are respectively provided with sensor groups, which include temperature sensors and pressure sensors.

[0045] A stator connected to a battery is provided on the outside of the rotor shaft.

[0046] A group of temperature control components without heating rods and heat dissipation are also arranged in the auxiliary pipe 1, which are only used to generate electricity when the booster tank pressurizes the carbon dioxide pipeline.

[0047] There are four groups of one-way valves.

[0048] A certain pressure is stored inside the booster tank, and the pressure in the connected carbon dioxide pipeline is detected by a pressure sensor (through a one-way valve in series). When the pressure in this part is too low, the booster tank is activated, and the pressure enters the auxiliary pipe one through the three-way valve and the one-way valve, and then enters the carbon dioxide pipeline through the one-way valve to increase the pressure in the carbon dioxide pipeline and supplement the pressure as needed.

[0049] The pressure is used to drive the fan blade group to rotate, and a certain amount of electricity is stored inside the battery. The solenoid valve on the auxiliary pipe 2 is automatically opened at a regular interval. When the temperature sensor detects that the temperature in the carbon dioxide pipeline (through the series connection of the one-way valve) is too low, the battery transmits electricity to the heating shaft, so that the heating rod transmits electricity to the heat sink on the fan blade group, thereby adjusting the temperature of the supercritical carbon dioxide flowing through, which is convenient for subsequent use.

[0050] A method for long-distance supercritical carbon dioxide pressurization comprises the following steps:

[0051] S1: Select pressure boosting points at certain intervals on the supercritical carbon dioxide pipeline, drill two sets of holes, then sleeved a 10 - 20m long sheath on the carbon dioxide pipeline, and connect the two sets of one - way valves inside it to the holes;

[0052] S2: Set the pressure boosting tank connected to the three - way valve 160 on the side of the carbon dioxide pipeline;

[0053] S3: Store a certain pressure inside the pressure boosting tank, use the pressure sensor to detect the pressure inside the continuous carbon dioxide pipeline (through the series connection of one - way valves). When the pressure at this part is too low, activate the pressure boosting tank, and the pressure enters the first sub - pipe through the three - way valve and one - way valve, and then enters the carbon dioxide pipeline through the one - way valve to increase the pressure inside the carbon dioxide pipeline, supplement the pressure as needed, and solve the problem of insufficient pressure in the long - distance transportation of supercritical carbon dioxide;

[0054] S4: Use the pressure to drive the fan blade group to rotate, store a certain amount of electricity inside the storage battery, regularly and automatically open the solenoid valve on the second sub - pipe. When the temperature sensor detects that the temperature inside the carbon dioxide pipeline (through the series connection of one - way valves) is too low, the storage battery conducts electricity to the heating shaft, so that the heating rod conducts heat to the heat sink on the fan blade group to adjust the temperature of the flowing supercritical carbon dioxide, and solve the problem that the pressure is unstable when injecting into the subsequent heater, affecting continuous transportation.

[0055] The following are several specific embodiments of applying the present invention

[0056] Embodiment 1

[0057] In a specific embodiment 1 of applying the present invention, the long - distance supercritical carbon dioxide pressure boosting device of the present invention includes a pressure boosting component and a temperature control component, as Figure 1 shown, wherein, the pressure boosting component includes a sheath 100, a first sub - pipe 110 and a second sub - pipe 150 arranged inside the sheath 100.

[0058] The long - distance supercritical carbon dioxide pressure boosting device includes a sheath 100, a first sub - pipe 110 arranged inside the sheath 100, solenoid valves 130 and one - way valves 140 connected to both ends of the first sub - pipe 110, and is connected to the carbon dioxide pipeline through the solenoid valves 130 and one - way valves 140.

[0059] One end of the second sub - pipe 150 is connected to the first sub - pipe 110 through a solenoid valve 130, and the three - way valve 160 is respectively connected to the first sub - pipe 110 and the second sub - pipe 150 through one - way valves 140. As shown by the arrows in the figure, the flow direction is restricted.

[0060] A pressure sensor is arranged inside the first sub - pipe 110, and a temperature sensor is arranged inside the second sub - pipe 150.

[0061] The boost tank 170 is fixed on the outside of the sheath 100 and connected to the three-way valve 160 .

[0062] The left side of the sheath 100 is provided with a fixing groove 120 for the supercritical carbon dioxide pipeline to be clamped. An opening can be opened and fixed with bolts. The sheath 100 also plays a protective role. Except for the carbon dioxide pipeline, everything else is integrally formed inside the sheath 100.

[0063] A battery 180 is provided on the boost tank 170 , and the battery 180 is connected to a heating rod 190 located in the secondary pipe 150 .

[0064] By storing a certain pressure inside the boost tank 170, when the pressure sensor detects that the pressure of the carbon dioxide pipeline (connected in series through the one-way valve 140) is too low, the solenoid valve 130 on the auxiliary pipe 110 is opened, and the boost tank 170 releases pressure to the carbon dioxide pipeline to increase the pressure inside the carbon dioxide pipeline and replenish the pressure regularly. The pressure sensor transmits the pressure data to the DCS control system, and the DCS control system controls the control valves of each unit.

[0065] By storing a certain amount of electricity inside the battery 180, the solenoid valve 130 on the auxiliary pipe 150 is automatically opened at a regular interval, so that the temperature sensor detects the temperature inside the carbon dioxide pipeline (through the series connection of the auxiliary pipe 110), and then the heating rod 190 is used to generate heat to control the temperature of the carbon dioxide in the carbon dioxide pipeline for subsequent use.

[0066] Example 2

[0067] In a specific embodiment 2 of the present invention, as Figure 2 As shown, Figure 2 It is a connection schematic diagram of the supercritical carbon dioxide long-distance pressurization device of the present invention; Figure 3 The figure is a temperature control schematic diagram of a specific embodiment of the supercritical carbon dioxide long-distance pressurization device of the present invention.

[0068] The temperature control assembly includes a mounting frame 200 installed in the auxiliary pipe 150, a connecting bearing 210 is provided in the mounting frame 200, a rotor shaft 220 and a heating rod 230 are dockedly provided in the connecting bearing 210, and both are provided with a docking heating rod 240.

[0069] A fan blade assembly 250 is disposed at the outer end of the rotor shaft 220 , and a heat sink 260 connected to the heating rod 240 is disposed on the fan blade assembly 250 .

[0070] The mounting brackets 200 are respectively provided with sensor groups 270 , and the sensor groups 270 include a temperature sensor and a pressure sensor.

[0071] Outside the rotor shaft 220, there is a stator 280 connected to the storage battery 180.

[0072] Inside the first auxiliary pipe 110, there is also a set of temperature control components without a heating rod 240 and a heat sink 260, which is only used for power generation when the pressure boosting tank 170 pressurizes the carbon dioxide pipeline.

[0073] There are four sets of one-way valves 140, which are installed according to the flow direction of the arrows shown in the figure.

[0074] A certain pressure is stored inside the pressure boosting tank 170. The pressure sensor is used to detect the pressure in the continuous carbon dioxide pipeline (through the series connection of the one-way valves 140). When the pressure at this part is too low, the pressure boosting tank 170 is activated. The pressure enters the first auxiliary pipe 110 through the three-way valve 160 and the one-way valve 140, and then enters the carbon dioxide pipeline through the one-way valve 140 to increase the pressure in the carbon dioxide pipeline and supplement the pressure as needed.

[0075] The pressure drives the fan blade group 250 to rotate, and a certain amount of electricity is stored inside the storage battery 180. The solenoid valve 130 on the second auxiliary pipe 150 is regularly and automatically opened. When the temperature sensor detects that the temperature in the carbon dioxide pipeline (through the series connection of the one-way valves 140) is too low, the storage battery 180 conducts electricity to the heating shaft 230, causing the heating rod 240 to conduct heat to the heat sink 260 on the fan blade group 250, and adjusting the temperature of the supercritical carbon dioxide flowing through it for subsequent use.

[0076] Embodiment 3

[0077] A method for remotely boosting supercritical carbon dioxide includes the following steps:

[0078] S1: Select pressure boosting points at regular intervals on the supercritical carbon dioxide pipeline, and then a 10 - 20 m long sheath 100 is sleeved on the carbon dioxide pipeline;

[0079] S2: The first auxiliary pipe 110 is connected in parallel to the carbon dioxide pipeline, the second auxiliary pipe 150 is connected in series between the first auxiliary pipe 110 and the carbon dioxide pipeline, and at the same time, the pressure boosting tank 170 is arranged on the side of the carbon dioxide pipeline and connected to the three-way valve 160;

[0080] S3: When the pressure sensor detects that the pressure in the carbon dioxide pipeline (through the series connection of the one-way valves 140) is too low, the solenoid valve 130 on the first auxiliary pipe 110 is opened. At this time, the pressure boosting tank 170 releases pressure to the carbon dioxide pipeline to increase the pressure in the carbon dioxide pipeline, solving the problem of insufficient pressure in the long-distance transportation of supercritical carbon dioxide;

[0081] S4: Automatically open the solenoid valve 130 on the secondary pipe two 150 regularly to enable the temperature sensor to detect the temperature inside the carbon dioxide pipeline (through the series connection of the primary pipe one 110), and then use the heating rod 190 to generate heat to control the temperature of the carbon dioxide inside the carbon dioxide pipeline, solving the problem that the pressure is unstable when injecting into the subsequent heater, which affects the continuous transportation.

[0082] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used 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 perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0083] Except for the technical features described in the specification, the rest are well-known technologies to those skilled in the art.

Claims

1. Supercritical carbon dioxide long-distance pressurization device, Characterized in that, The supercritical carbon dioxide long-distance pressurization device includes a first auxiliary pipe, a second auxiliary pipe, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, an electromagnetic valve, a three-way valve and a pressurization tank. One end of the second auxiliary pipe is connected to one end of the first auxiliary pipe through the electromagnetic valve. The other ends of the first auxiliary pipe and the second auxiliary pipe are respectively connected to the carbon dioxide pipeline through the first one-way valve and the second one-way valve. The three-way valve is respectively connected to the first auxiliary pipe and the second auxiliary pipe through the third one-way valve and the fourth one-way valve. The intake end of the three-way valve is connected to the pressurization tank. A pressure sensor is provided in the first auxiliary pipe. When the pressure in the carbon dioxide pipeline is too low, the pressurization tank is activated, and the pressure enters the first auxiliary pipe through the three-way valve and the third one-way valve, and then enters the carbon dioxide pipeline through the first one-way valve to increase the pressure in the carbon dioxide pipeline.

2. The supercritical carbon dioxide long-distance pressurization device according to claim 1, Characterized in that, The supercritical carbon dioxide long-distance pressurization device further includes a sheath, and both the first auxiliary pipe and the second auxiliary pipe are located inside the sheath.

3. The supercritical carbon dioxide long-distance pressurization device according to claim 2, Characterized in that, A fixing groove for clamping the carbon dioxide pipeline is provided on the left side of the sheath, and an opening can be opened and fixed with bolts.

4. The supercritical carbon dioxide long-distance pressurization device according to claim 1, Characterized in that, A storage battery is provided on the pressurization tank.

5. The supercritical carbon dioxide long-distance pressurization device according to claim 4, Characterized in that, The supercritical carbon dioxide long-distance pressurization device further includes a first temperature control component, which is located inside the second auxiliary pipe and includes a mounting frame. A connecting bearing is provided inside the mounting frame, and a rotor shaft and a heating shaft are butt-jointed inside the connecting bearing, and heating rods are butt-jointed inside both of them.

6. The supercritical carbon dioxide long-distance pressurization device according to claim 5, Characterized in that, A fan blade group is provided at the outer end of the rotor shaft. Heat dissipation fins connected to the heating rods are provided on the fan blade group, and a stator connected to the storage battery is provided on the outside of the rotor shaft.

7. The supercritical carbon dioxide long-distance pressurization device according to claim 6, Characterized in that, A temperature sensor is provided on the mounting frame. The pressure inside the second auxiliary pipe drives the fan blade group to rotate, stores a certain amount of electricity inside the storage battery, and regularly and automatically opens the electromagnetic valve on the second auxiliary pipe. When the temperature sensor detects that the temperature in the carbon dioxide pipeline is too low, the storage battery conducts electricity to the heating shaft, so that the heating rod heats up and conducts the heat to the heat dissipation fins on the fan blade group to adjust the temperature of the supercritical carbon dioxide flowing through.

8. The supercritical carbon dioxide long-distance pressurization device according to claim 1, Characterized in that, The supercritical carbon dioxide long-distance boosting device also includes a second temperature control component, which is located in the auxiliary pipe and includes a mounting frame, a connecting bearing is provided in the mounting frame, a rotor shaft is docked in the connecting bearing, a fan blade group is provided at the outer end of the rotor shaft, and a stator connected to the battery is provided on the outer side of the rotor shaft.

9. The supercritical carbon dioxide long-distance pressurization device according to claim 8, It is characterized in that The pressure sensor is arranged on the mounting frame, and the pressure in the auxiliary pipe drives the fan blade group to rotate, so that a certain amount of electricity is stored in the storage battery.

10. Supercritical carbon dioxide long-distance pressurization method, It is characterized in that The supercritical carbon dioxide long-distance pressurization method adopts the supercritical carbon dioxide long-distance pressurization device described in claim 1, comprising: Step 1: Determine the pressurization points at intervals on the supercritical carbon dioxide pipeline and install the sheath on the carbon dioxide pipeline; Step 2: Set the booster tank connected to the three-way valve on the carbon dioxide pipeline side; Step 3: When the pressure in the carbon dioxide pipeline is too low, the booster tank is activated to increase the pressure in the carbon dioxide pipeline; Step 4, periodically and automatically open the solenoid valve on the auxiliary pipe 2, and when the temperature sensor detects that the temperature in the carbon dioxide pipeline is too low, control the temperature of the supercritical carbon dioxide in the carbon dioxide pipeline.

11. The method for long-distance supercritical carbon dioxide pressurization according to claim 10, It is characterized in that In step 1, pressurization points are determined at intervals on the supercritical carbon dioxide pipeline, two groups of holes are opened, and then a 10-20m long sheath is put on the carbon dioxide pipeline, and the first one-way valve and the second one-way valve are connected to the holes.

12. The method for long-distance supercritical carbon dioxide pressurization according to claim 10, It is characterized in that In step 3, when the pressure in the carbon dioxide pipeline is too low, the booster tank is activated, and the pressure enters the auxiliary pipe 1 through the three-way valve and the third one-way valve, and then enters the carbon dioxide pipeline through the first one-way valve to increase the pressure in the carbon dioxide pipeline.

13. The method for long-distance supercritical carbon dioxide pressurization according to claim 10, It is characterized in that In step 4, a certain amount of electricity is stored inside the battery, and the solenoid valve on the auxiliary pipe 2 is automatically opened periodically. When the temperature sensor detects that the temperature in the carbon dioxide pipeline is too low, the battery transmits electricity to the heating shaft, causing the heating rod to heat up and transfer the heat to the heat sink on the fan blade group, thereby regulating the temperature of the supercritical carbon dioxide flowing through.

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