WO2020087918A1

WO2020087918A1 - Supercritical carbon dioxide supply regulation and control system and process

Info

Publication number: WO2020087918A1
Application number: PCT/CN2019/088288
Authority: WO
Inventors: 颜炳姜; 李伟秋; 莫大卓; 王勇
Original assignee: 汇专科技集团股份有限公司
Priority date: 2018-10-29
Filing date: 2019-05-24
Publication date: 2020-05-07
Also published as: KR20210105341A

Abstract

Disclosed are a supercritical carbon dioxide supply regulation and control system and a supercritical carbon dioxide supply regulation and control method. The system comprises a supercritical carbon dioxide generation apparatus (1) and a supercritical carbon dioxide output apparatus (2), wherein a supercritical carbon dioxide flow regulation apparatus (3) is also arranged between the supercritical carbon dioxide generation apparatus (1) and the supercritical carbon dioxide output apparatus (2); the supercritical carbon dioxide output apparatus (2) comprises a discharge pipe (21); and the supercritical carbon dioxide flow regulation apparatus (3) comprises a transit pipeline (31), the supercritical carbon dioxide flow regulation apparatus (3) regulates the flow by way of switching the transit pipeline (31), and an inner diameter of the transit pipeline (31) is less than that of the discharge pipe (21). Before supercritical carbon dioxide is conveyed, supercritical carbon dioxide flow regulation of the system can be realized by way of switching the transit pipeline (31), such that same meets the flow processing requirements for the supercritical carbon dioxide, and by way of changing the values of the inner diameter and length of the transit pipeline (31). The present invention not only has a stable output, but also has low costs and easy maintenance, and can be applied to the field of metal processing.

Description

Supercritical carbon dioxide supply control system and process The

Technical field

The invention relates to the field of metal processing, in particular to a supercritical carbon dioxide supply control system and process.

Background technique

With the rapid advancement of modern advanced manufacturing technology, all kinds of new materials and new processes have emerged at the historic moment, which puts forward higher requirements on the cutting speed, tool life and processing efficiency of machine tools. Clean production and green manufacturing have become one of the themes of developing advanced manufacturing technology. The use of low-temperature cooling lubrication cutting technology has been proven to be an effective solution to the difficult machining characteristics such as strong cutting thermal shock and vibration of high-hardness and high-strength materials, and easy processing burrs caused by plastic material cutting.

The current commonly used low-temperature cutting technology is mainly: low-temperature cold air (-30 ℃) cooling technology, liquid nitrogen (-179 ℃) cooling technology, liquid carbon dioxide (-78.5 ℃) cooling technology, etc. Among them, the liquid carbon dioxide cooling technology uses liquid carbon dioxide with a pressure of 5.0-6.5MPa to be delivered through the pipeline and released at the front end of the nozzle. It can rapidly expand at the nozzle and absorb heat to generate a low temperature of -78.5 ℃ (theoretical value), which has been successfully applied to the cutting of difficult-to-machine materials cool down. In order to be as close as possible to its theoretical low temperature value, the pressure drop rate of the liquid carbon dioxide inside the pipeline needs to be strictly controlled, and the pipeline needs to be effectively insulated to prevent the liquid carbon dioxide from freezing and blocking the pipe due to the rapid pressure drop inside the pipeline road. Due to the above-mentioned shortcomings of the liquid carbon dioxide cooling technology, the technology has not yet been widely applied.

In response to the above problems, cooling lubrication using supercritical carbon dioxide fluid for cutting has gained attention in recent years. The low-pressure carbon dioxide gas is pressurized by the pressurization system to above 7.4MPA and heated to above 31.1 ℃, carbon dioxide can be in a supercritical state. The supercritical carbon dioxide is sprayed out, and due to the rapid pressure drop of the supercritical carbon dioxide fluid, the endothermic expansion is instantaneous, so that the spray area reaches the effect of instantaneous low temperature (-78.5 ℃).

Although supercritical carbon dioxide has been widely used in the extraction, etching, and cleaning processes of the pharmaceutical industry, chemical engineering, and semiconductor industry, the application of supercritical carbon dioxide to process cooling to achieve efficient cooling of the process is still in the in-depth development stage. Patent ZL200680022912.2 discloses a metal working lubrication method based on supercritical carbon dioxide, which involves a system composition that incorporates a lubricant in the supercritical carbon dioxide fluid and applies supercritical carbon dioxide during the metal working process. Patent 201710867324.9 discloses a supercritical carbon dioxide centralized liquid supply system, and describes the composition of the centralized liquid supply system and the centralized liquid supply method. Unlike liquid carbon dioxide cooling technology, supercritical carbon dioxide must always maintain a pressure greater than or equal to 7.4 MPa and a temperature greater than or equal to 31.1 ° C in the delivery pipeline to ensure that the supercritical carbon dioxide fluid rapidly drops to form a low-temperature medium.

Existing supercritical carbon dioxide systems mostly involve the method of obtaining supercritical carbon dioxide fluid, which proves that supercritical carbon dioxide can be effectively used in metal processing. For how to control the output of supercritical carbon dioxide, how to ensure that the carbon dioxide in the pipeline is always in a supercritical state, and how to control the super The critical carbon dioxide injection flow rate is not involved.

Summary of the invention

The purpose of the present invention is to provide a supercritical carbon dioxide supply control system and process with precise flow control and strong delivery stability.

The technical solutions adopted by the present invention are:

A supercritical carbon dioxide supply control system includes a supercritical carbon dioxide generating device and a supercritical carbon dioxide output device. A supercritical carbon dioxide flow regulating device and a supercritical carbon dioxide output device are also provided between the supercritical carbon dioxide generating device and the supercritical carbon dioxide output device Including a discharge pipe for conveying supercritical carbon dioxide fluid. The supercritical carbon dioxide flow adjustment device includes a transfer pipe. The supercritical carbon dioxide flow adjustment device adjusts the flow by switching the transfer pipe. The inner diameter of the transfer pipe is smaller than the inner diameter of the discharge pipe .

As a further improvement of the technical solution of the present invention, the supercritical carbon dioxide flow adjustment device includes a feed adapter module and a discharge adapter module, the feed adapter module is connected to a supercritical carbon dioxide generation device, and the output adapter module is connected to a supercritical carbon dioxide output The device, the feed conversion module and the discharge conversion module are all provided with flow channels, and the two ends of the transfer pipeline are respectively connected to the flow channels in the feed conversion module and the discharge conversion module through a detachable connection structure.

Further as an improvement of the technical solution of the present invention, the feed adapter module and the discharge adapter module are each provided with a card hole, and both ends of the transfer pipe are provided with chucks detachably connected to the card hole. The transfer pipe is For quantitative capillaries, the diameter D of the inner hole of the transfer pipeline ranges from 0.05 to 2 mm.

As a further improvement of the technical solution of the present invention, the chuck includes a feed chuck and a discharge chuck. The feed chuck and the discharge chuck are provided with a capillary channel for setting a quantitative capillary, the feed chuck and the discharge chuck The heads are respectively embedded in a card hole.

As a further improvement of the technical solution of the present invention, it also includes a feed adaptor slot on the feed adaptor module, the feed adaptor slot connects to the flow channel, and also includes a feed seal joint, which has a supercritical connection in the feed seal joint In the supercritical carbon dioxide channel of the carbon dioxide source, one end of the feed sealing joint is embedded in the feed adaptor.

Further as an improvement of the technical solution of the present invention, it also includes an adapter boss protruding outward from the discharge adapter module, and also includes a discharge sealing joint. The discharge sealing joint has a through hole for connecting to the supercritical carbon dioxide output device. One end of the material sealing joint is provided with a material discharging adapter groove, and the material sealing joint is sleeved on the adapter boss.

As a further improvement of the technical solution of the present invention, the discharge pipe is connected to the discharge adapter module, a nozzle is provided at the end of the discharge pipe, and an air pipe sleeved outside the discharge pipe is also included. One end of the air pipe is connected to the nozzle, and the air pipe is connected to A cavity is left between the discharge pipes, and the other end of the air pipe is provided with a gas flow inlet.

As an improvement of the technical solution of the present invention, it also includes an auxiliary airflow device. The auxiliary airflow device includes an auxiliary air source. The auxiliary air source is connected to the airflow inlet through a pipeline. A valve and a heating device are also provided between the auxiliary air source and the airflow inlet.

As a further improvement of the technical solution of the present invention, one end of the gas pipe is connected to the discharge adapter module, and the discharge adapter module is provided with an airflow adapter connected to the airflow inlet.

The invention also provides a supercritical carbon dioxide supply control process, which includes the following steps:

1) A supercritical carbon dioxide flow regulating device is provided between the supercritical carbon dioxide generating device and the supercritical carbon dioxide output device, and the transit line in the supercritical carbon dioxide flow regulating device is replaced to meet the output demand by replacing it;

2) Supercritical carbon dioxide is generated by the supercritical carbon dioxide generating device, and the supercritical carbon dioxide passes through the supercritical carbon dioxide flow regulating device and flows into the output pipeline of the supercritical carbon dioxide output device;

3) A gas pipe is installed on the output pipe of the supercritical carbon dioxide output device, and the heated auxiliary gas is continuously injected into the gas pipe.

As a further improvement of the technical solution of the present invention, before the auxiliary gas enters the trachea, the auxiliary gas is heated by the heating device.

As a further improvement of the technical solution of the present invention, the temperature of the auxiliary gas is greater than or equal to 31 ° C.

As a further improvement of the technical solution of the present invention, the auxiliary gas includes compressed air, nitrogen, carbon dioxide, and argon.

As a further improvement of the technical solution of the present invention, in step 3), the supercritical carbon dioxide and the auxiliary gas stream are simultaneously sprayed through the nozzle.

Beneficial effect of the present invention: Before the supercritical carbon dioxide supply control system and process, the supercritical carbon dioxide flow adjustment device switches the transfer pipeline to meet the flow processing requirements of supercritical carbon dioxide, and by changing the transfer pipeline The inner diameter value or length value can realize the supercritical carbon dioxide flow adjustment of the system, which not only has stable output, but also has low cost and easy maintenance.

BRIEF DESCRIPTION

The present invention will be further described below with reference to the drawings:

1 is a schematic diagram of the overall structure of an embodiment of the present invention;

2 is a schematic diagram of a supercritical carbon dioxide output device and a supercritical carbon dioxide flow adjustment device according to an embodiment of the present invention;

3 is a schematic structural diagram of a supercritical carbon dioxide flow adjustment device according to an embodiment of the present invention;

4 is an explosion schematic diagram of a supercritical carbon dioxide output device and a supercritical carbon dioxide flow adjustment device according to an embodiment of the present invention.

detailed description

1 to 4, the present invention is a supercritical carbon dioxide supply control system, including a supercritical carbon dioxide generating device 1 and a supercritical carbon dioxide output device 2, the supercritical carbon dioxide generating device 1 and the supercritical carbon dioxide output device 2 A supercritical carbon dioxide flow adjustment device 3 is provided. The supercritical carbon dioxide output device 2 includes a discharge pipe 21 for conveying supercritical carbon dioxide fluid. The supercritical carbon dioxide flow adjustment device 3 includes a relay line 31 and a supercritical carbon dioxide flow adjustment device 3 By switching the transfer pipe 31 to adjust the flow rate, the inner diameter of the transfer pipe 31 is smaller than the inner diameter of the discharge pipe 21.

Specifically, the supercritical carbon dioxide generating device 1 is used to convert low-pressure carbon dioxide into a supercritical carbon dioxide fluid, which mainly includes a carbon dioxide source 11, a pressurizing device 12, a storage container 13, a heater 14, a delivery pipeline, and is provided on the delivery pipeline On-off valves, etc. The supercharging device 12 is used for supercharging low-pressure carbon dioxide. In order to ensure the state and nature of supercritical carbon dioxide fluid, the upper limit of carbon dioxide pressure increase is set at 7.4 ~ 30MPa, and the upper limit of pressure increase can be adjusted according to the actual cutting application requirements. The heater 14 is used for heating the pressurized carbon dioxide. In order to ensure the state and nature of the supercritical carbon dioxide fluid required by the supercritical carbon dioxide cooling and lubrication system, the upper limit of the heating temperature of the heater is set at 31-100 ℃, and the upper limit of the heating temperature is adjustable according to the actual cutting application requirements.

As a preferred embodiment of the present invention, the supercritical carbon dioxide flow adjustment device 3 further includes a feed adapter module 32 and a discharge adapter module 33, the feed adapter module 32 is connected to the supercritical carbon dioxide generating device 1, and the feed adapter module 32 is specifically connected to the conveying pipeline of the supercritical carbon dioxide generating device 1, and the feed transition module 32 and the exit transition module 33 are provided with flow channels for conducting supercritical carbon dioxide, and the two ends of the flow channel are respectively A detachable connection structure for connecting other components is provided, and the connection structure may be a screw thread.

The transfer tube 31 is a quantitative capillary, and the quantitative capillary has the function of holding pressure. The value of the inner diameter D of the transfer tube 31 ranges from 0.05 to 2mm. The quantitative capillary is realized, and the adjustable range of supercritical carbon dioxide flow is: 0.1 ～ 20kg / h.

The inner diameter of the transfer pipe 31 is agreed to be 0.05 to 2 mm, and the viscosity of carbon dioxide in the liquid state is approximately equal to 0.0127. Combined with the calculation of supercritical carbon dioxide density, it can be seen that the Reynolds number is small at this time, and the effect of viscous force on the flow field is greater than inertia. The disturbance of the flow velocity in the flow field will be attenuated by the viscous force, and the fluid flow is stable, which is laminar. And the laminar flow will produce greater internal friction in the flow, resulting in energy loss, thereby reducing the fluid flow rate. Using this theorem, supercritical carbon dioxide flow rate control can be achieved, and then supercritical carbon dioxide output flow control can be achieved by controlling the flow rate.

As a preferred embodiment of the present invention, the feed adapter module 32 and the feed adapter module 33 are each provided with a card hole, the card holes are connected to their respective flow channels, and the two ends of the transfer pipeline 31 are provided with card holes Removably connected chuck.

As a preferred embodiment of the present invention, the chuck includes a feed chuck 311 and a discharge chuck 312. Both the feed chuck 311 and the discharge chuck 312 are provided with capillary channels for setting capillaries, and the feed chuck 311 The discharge chuck 312 and the discharge chuck 312 are respectively embedded in a card hole. The cross-sectional shape of the feed chuck 311 and the discharge chuck 312 is a superposition of a rectangle and a round table. The small end of the round table is facing the inside of the card hole, which is convenient Alignment of capillaries.

Specifically, the feed chuck 311 and the discharge chuck 312 mainly play a role of sealing the transfer part, and the feed chuck 311 and the discharge chuck 312 can be directly embedded in the card hole, and the interference or transition with the card hole Cooperate, so as to realize the insertion and extraction of the feed chuck 311 and the discharge chuck 312, or the feed chuck 311 and the discharge chuck 312 and the card hole are provided with mutually matching threads, so as to realize a detachable connection to achieve The switching of quantitative capillaries of different specifications and increasing the length of the quantitative capillaries can increase the contact area of the wall of the fluid and the quantitative capillaries, thereby reducing the kinetic energy of the fluid and reducing the flow rate.

As a preferred embodiment of the present invention, the feed adapter module 32 is provided with a feed adapter groove 321, which is connected to the flow channel, and further includes a feed seal joint 322. In the supercritical carbon dioxide channel connected to the supercritical carbon dioxide source, one end of the feed sealing joint 322 is embedded in the feed adaptor 321. Through the cooperation between the feed adapter groove 321 and the feed seal joint 322, the feed seal joint 322 can be deeply embedded in the feed adapter module 32, thereby enhancing the mutual tightness of the cooperation, improving the sealing performance, and avoiding Supercritical carbon dioxide fluid leaks.

As a preferred embodiment of the present invention, the discharge adapter module 33 is provided with an outwardly protruding adapter boss 332, and further includes a discharge seal joint 331. Through the hole, one end of the discharge sealing joint 331 is provided with a discharge adapting groove 333, and the discharge sealing joint 331 is sleeved on the adapting boss 332. Through the cooperation of the discharge adapter groove 333 and the adapter boss 332, the adapter boss 332 can be deeply embedded in the outlet adapter module 33, thereby enhancing the mutual cooperation tightness, improving the sealing, and avoiding Leakage of supercritical carbon dioxide fluid and auxiliary gas.

As a preferred embodiment of the present invention, the supercritical carbon dioxide output device 2 includes a discharge tube 21 connected to the discharge adapter module 33, the discharge tube 21 is a capillary tube, and the inner diameter of the discharge tube 21 ranges from 0.05 to 2mm, compared with the conventional pressure-resistant refrigerant tube or steel pipe, the capillary tube can effectively control the pressure drop rate when supercritical carbon dioxide is output. The end of the discharge pipe 21 is provided with a nozzle 22. The nozzle 22 adopts a multi-channel structure, which can not only allow the passage of supercritical carbon dioxide fluid, but also connect a small amount of lubricating oil and auxiliary gas. It also includes an air pipe 41 sleeved outside the discharge pipe 21, one end of the gas pipe 41 is connected to the nozzle 22, a cavity is left between the air pipe 41 and the discharge pipe 21, and the other end of the air pipe 41 is provided with a gas flow inlet.

Specifically, the auxiliary gas can be introduced into the gas flow inlet. The auxiliary gas is pre-heated and has a certain temperature. The auxiliary gas enters the gas pipe 41 and wraps the discharge pipe 21. The purpose is to prevent the supercritical carbon dioxide in the discharge pipe 21 from being transferred. There is a loss of intermediate heat to avoid the change of supercritical carbon dioxide from supercritical state to other phase states. The auxiliary gas ensures that the high-pressure carbon dioxide in the supercritical carbon dioxide output line is always at or near the temperature range required by the supercritical state before the high-pressure carbon dioxide is ejected through the special nozzle 22, ensuring the supercritical carbon dioxide fluid properties and supercritical carbon dioxide performance Play.

As a preferred embodiment of the present invention, it also includes an auxiliary airflow device 4, the auxiliary airflow device 4 includes an auxiliary air source 42, the auxiliary air source 42 is connected to the airflow inlet through a pipeline, and a valve 43 is further provided between the auxiliary airsource 42 and the airflow inlet And the heating device 44, the heating device 44 is used to heat the auxiliary gas. A filtering device is also provided between the auxiliary air source 42 and the airflow inlet.

As a preferred embodiment of the present invention, one end of the air pipe 41 is connected to the discharge adapter module 33, and the discharge adapter module 33 is provided with an airflow conversion interface that communicates with the airflow inlet, and one end of the airflow conversion interface is connected to the airflow inlet. One end is connected to the air outlet pipe 41 of the auxiliary airflow device 4 to realize the transfer of the auxiliary airflow.

In addition, the present invention is also provided with a control device 5, the control device 5 and the supercritical carbon dioxide generating device 1, the supercritical carbon dioxide output device 2, the auxiliary gas flow device 4 are electrically connected, the control device 5 is used to control the heater, heating device And the solenoid valve in the pipeline, etc., the control device 5 can also monitor the status of supercritical carbon dioxide at various locations in real time, such as pressure and temperature.

1) A supercritical carbon dioxide flow regulating device 3 is provided between the supercritical carbon dioxide generating device 1 and the supercritical carbon dioxide output device 2. By changing the relay pipeline 31 in the supercritical carbon dioxide flow regulating device 3 to meet its output requirements, mainly by switching The length of the transfer line 31 to change its flow;

2) Supercritical carbon dioxide is generated by the supercritical carbon dioxide generating device 1, and the supercritical carbon dioxide passes through the supercritical carbon dioxide flow regulating device 3 and flows into the discharge pipe 21 of the supercritical carbon dioxide output device 2;

3) The discharge pipe 21 of the supercritical carbon dioxide output device 2 is provided with a gas pipe 41, and the heated auxiliary gas is continuously injected into the gas pipe 41.

Before delivering supercritical carbon dioxide, the transfer pipe 31 is switched by the supercritical carbon dioxide flow adjustment device 3 to meet the flow processing requirements of the supercritical carbon dioxide, mainly by switching the length of the transfer pipe 31 to change its flow rate, and at the same time through the auxiliary The gas is wrapped outside the discharge pipe 21 of supercritical carbon dioxide, which plays the role of temperature compensation, and maintains the temperature value of supercritical carbon dioxide always at or near the temperature range required by the supercritical state, ensuring the stability of the temperature of the supercritical carbon dioxide fluid properties Supercritical carbon dioxide performance.

As a preferred embodiment of the present invention, before the auxiliary gas enters the gas pipe 41, the auxiliary gas is heated by a heating device. The temperature of the auxiliary gas is greater than or equal to 31 ° C. The auxiliary gas includes but is not limited to compressed air, nitrogen, carbon dioxide, and argon. In general, inert gas can be used.

As a preferred embodiment of the present invention, in step 3), the supercritical carbon dioxide and the auxiliary gas flow are simultaneously ejected through the nozzle 22, and the auxiliary gas is finally ejected outward at the nozzle 22, which can prevent the supercritical carbon dioxide from being injected during The nozzle 22 freezes, which in turn blocks the nozzle 22.

Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without violating the spirit of the invention. These equivalent modifications or replacements are included in the claims of this application. Within the limits. The

Claims

A supercritical carbon dioxide supply control system, characterized in that it includes a supercritical carbon dioxide generation device and a supercritical carbon dioxide output device, and a supercritical carbon dioxide flow adjustment device is also provided between the supercritical carbon dioxide generation device and the supercritical carbon dioxide output device , The supercritical carbon dioxide output device includes a discharge pipe for conveying supercritical carbon dioxide fluid, the supercritical carbon dioxide flow adjustment device includes a transfer line, and the supercritical carbon dioxide flow adjustment device switches the transfer line to To adjust the flow rate, the inner diameter of the transfer pipe is smaller than the inner diameter of the discharge pipe.
The supercritical carbon dioxide supply control system according to claim 1, wherein the supercritical carbon dioxide flow adjustment device includes a feed adapter module and a discharge adapter module, the feed adapter module is connected to supercritical carbon dioxide A generating device, the discharge adapter module is connected to a supercritical carbon dioxide output device, the feed adapter module and the discharge adapter module are provided with flow channels, and the two ends of the transfer pipeline are respectively detachably connected The structure is connected to the flow channels in the feed conversion module and the discharge conversion module. The
The supercritical carbon dioxide supply control system according to claim 2, wherein each of the feed adapter module and the discharge adapter module is provided with a card hole, and both ends of the transfer pipeline are provided with The chuck with the detachable connection of the card hole, the transfer pipe is a quantitative capillary, and the value range of the diameter D of the inner hole of the transfer pipe is 0.05 to 2 mm. The
The supercritical carbon dioxide supply control system according to claim 3, wherein the chuck includes a feed chuck and a discharge chuck, the feed chuck and the discharge chuck are provided with a quantitative capillary In the capillary channel, the feed chuck and the discharge chuck are respectively embedded in one of the card holes.
The supercritical carbon dioxide supply control system according to claim 2 or 3, characterized in that it further comprises a feed adapter tank located on the feed adapter module, the feed adapter tank being connected to the flow channel It also includes a feed seal joint, which has a supercritical carbon dioxide channel connected to a supercritical carbon dioxide source, and one end of the feed seal joint is embedded in the feed adapter groove. The
The supercritical carbon dioxide supply control system according to claim 2 or 3, characterized in that it further comprises an adapter boss protruding outward from the outlet adapter module, and further includes an outlet sealing joint, the outlet The sealing joint has a through hole for connecting to the supercritical carbon dioxide output device, and one end of the discharging sealing joint is provided with a discharging adapter groove, and the discharging sealing joint is sleeved on the adapter boss. The
The supercritical carbon dioxide supply control system according to claim 2, characterized in that: the discharge pipe is connected with a discharge adapter module, a nozzle is provided at the end of the discharge pipe, and further comprises a sleeve sleeved on the outlet For the gas pipe outside the material pipe, one end of the gas pipe is connected to the nozzle, a cavity is left between the gas pipe and the discharge pipe, and the other end of the gas pipe is provided with a gas flow inlet. The
The supercritical carbon dioxide supply control system according to claim 7, further comprising an auxiliary gas flow device, the auxiliary gas flow device includes an auxiliary gas source, the auxiliary gas source is connected to the gas flow inlet through a pipeline, and the auxiliary gas There is also a valve and a heating device between the source and the airflow inlet. The
The supercritical carbon dioxide supply control system according to claim 8, characterized in that: one end of the gas pipe is connected to a discharge adapter module, and the discharge adapter module is provided with an airflow communicating with the airflow inlet Adapter. The
A supercritical carbon dioxide supply control process is characterized by the following steps:

1) A supercritical carbon dioxide flow regulating device is provided between the supercritical carbon dioxide generating device and the supercritical carbon dioxide output device, and the transit line in the supercritical carbon dioxide flow regulating device is replaced to meet the output demand by replacing it;

2) Supercritical carbon dioxide is generated by the supercritical carbon dioxide generating device, and the supercritical carbon dioxide passes through the supercritical carbon dioxide flow regulating device and flows into the output pipeline of the supercritical carbon dioxide output device;

3) A gas pipe is provided on the output pipe of the supercritical carbon dioxide output device, and the heated auxiliary gas is continuously injected into the gas pipe.
The supercritical carbon dioxide supply control process according to claim 10, wherein the auxiliary gas is heated by the heating device before entering the gas pipe. The
The supercritical carbon dioxide supply control process according to claim 11, wherein the temperature of the auxiliary gas is greater than or equal to 31 ° C.
The supercritical carbon dioxide supply control process according to claim 11 or 12, wherein the auxiliary gas includes compressed air, nitrogen, carbon dioxide, and argon. The
The process for controlling the supply of supercritical carbon dioxide according to claim 10, wherein in step 3), the supercritical carbon dioxide and the auxiliary gas stream are simultaneously sprayed through the nozzle. The