Carbon capture system and capture method for composite high-temperature heat pump of supergravity machine

Abstract

The invention discloses a carbon capture system and a carbon capture method for a composite high-temperature heat pump of a supergravity machine. The carbon capture system comprises an absorption unit and a desorption unit, wherein the absorption unit and the desorption unit both adopt supergravity machines; the absorption unit is used for fully absorbing COs in the flue gas and an absorbent in a high gravity field to form a COs-rich absorption liquid; the heat exchange unit and the desorption unit are electrically connected with a high-temperature heat pump unit, the condenser is connected with the desorption unit and provides a heat source for the desorption process, and the evaporator is connected with the heat exchange unit and recovers system waste heat; the heat exchange unit is used for realizing heat exchange between the rich-COS absorption liquid and the poor-COS absorption liquid and providing a waste heat source for the high-temperature heat pump unit; the desorption unit is used for heating and desorbing the CO-rich absorption liquid in a high gravity field and releasing high-purity COgas, and the heat demand of the desorption unit is provided by a condenser of the high-temperature heat pump unit; and the absorbent circulation unit is used for conveying the poor-COS absorption liquid generated by the desorption unit to the absorption unit for absorbent circulation reuse.

Description

Technical Field

[0001] This invention relates to the field of carbon capture technology, specifically to a carbon capture system and method for a high-temperature heat pump in a supergravity machine. Background Technology

[0002] Driven by the global goal of carbon neutrality, CO2 capture, utilization and storage (CCUS) technology has become a core means of emission reduction. Due to its high efficiency and strong adaptability, the absorption method is one of the most mature solutions for industrial-scale application. It achieves CO2 capture and absorbent regeneration through an absorption-desorption cycle.

[0003] Existing absorption systems have significant shortcomings: First, the energy consumption for desorption and regeneration is relatively high, with traditional steam heating methods generally consuming more than 3 GJ / tCO2, resulting in high operating costs; second, the mass transfer efficiency is limited, with small gas-liquid contact areas in equipment such as fixed beds and spray towers, which restricts collection efficiency and equipment compactness.

[0004] Although the industry has tried to optimize energy consumption through waste heat recovery, heat pump-assisted heating, or to enhance mass transfer using hypergravity technology, existing solutions have problems such as low integration and poor component compatibility. The hypergravity equipment and energy recovery system are not coordinated enough, the heat pump and desorption unit are weakly coupled, and the waste heat utilization efficiency is low, making it difficult to achieve both high-efficiency mass transfer and deep energy saving.

[0005] In addition, some systems have imperfect designs in terms of equipment corrosion prevention, absorbent regeneration, and intelligent control, which further limits their reliability and economy in large-scale industrial applications.

[0006] Existing hypergravity carbon capture systems still suffer from technological shortcomings: On the one hand, the integration of hypergravity equipment and energy recovery systems is low, and the heat demand of the hypergravity desorption unit still relies on external energy supplementation, failing to fully integrate the system's own waste heat and heat pump technology to achieve energy closed-loop operation; on the other hand, many existing composite systems suffer from insufficient component compatibility, such as mismatch between the mass transfer characteristics of hypergravity equipment and the heating parameters of heat pumps, and poor synergy between waste heat recovery and lean / rich liquid heat exchange, resulting in poor overall system stability and limited energy consumption optimization effects. Furthermore, some systems have imperfect designs in areas such as equipment corrosion protection, absorbent regeneration efficiency, and intelligent control precision, further restricting their reliability and economic viability for large-scale industrial applications. Summary of the Invention

[0007] The purpose of this invention is to propose a carbon capture system and method for a supergravity machine composite high-temperature heat pump to solve the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, the first technical solution adopted by the present invention is: a carbon capture system of a supergravity machine composite high-temperature heat pump, comprising an absorption unit, a heat exchange unit, a desorption unit and an absorbent circulation unit connected in series to form an absorption-desorption cycle;

[0009] Both the absorption unit and the desorption unit employ hypergravity machines. The absorption unit is used to fully absorb CO2 from flue gas and absorbent in a hypergravity field, forming a CO2-rich absorbent liquid. The heat exchange unit and the desorption unit are electrically connected to a high-temperature heat pump unit. The high-temperature heat pump unit includes a compressor, a condenser, a throttling element, and an evaporator. The condenser is connected to the desorption unit and provides a heat source for the desorption process. The evaporator is connected to the heat exchange unit and recovers waste heat from the system. The heat exchange unit is used to realize the heat exchange between the CO2-rich absorbent and the CO2-poor absorbent, and to provide a waste heat source for the high-temperature heat pump unit. The desorption unit is used to heat and desorb CO2-rich absorbent in a hypergravity field to release high-purity CO2 gas. The heat requirement of the desorption unit is provided by the condenser of the high-temperature heat pump unit. The absorbent recycling unit is used to transport the lean CO2 absorbent solution generated by the desorption unit to the absorption unit for absorbent recycling.

[0010] Furthermore, the supergravity machine of the absorption unit is a supergravity absorber. The supergravity absorber is equipped with a spray device and a rotating packing bed. The spray device is connected to the lean liquid output end of the absorbent circulation unit. The air inlet of the supergravity absorber is connected to the CO2-containing flue gas pretreatment device, and the liquid outlet is connected to the rich liquid input end of the heat exchange unit.

[0011] Furthermore, the hypergravity machine of the desorption unit is a hypergravity desorber. The hypergravity desorber is equipped with a heating chamber and a rotating separation structure. The heating chamber is connected to the condenser of the high-temperature heat pump unit through a heat transfer medium pipeline. The gas outlet of the hypergravity desorber is connected to the CO2 purification treatment device, and the liquid outlet is connected to the lean liquid input end of the heat exchange unit.

[0012] Furthermore, the heat exchange unit includes a lean-rich liquid heat exchanger and a waste heat recovery heat exchanger. The rich liquid channel of the lean-rich liquid heat exchanger is connected to the liquid outlet of the absorption unit and the liquid inlet of the desorption unit, and the lean liquid channel is connected to the liquid outlet of the desorption unit and the liquid inlet of the absorption unit. The heat source channel of the waste heat recovery heat exchanger is connected to the waste heat discharge end of the desorption unit, and the cold source channel is connected to the evaporator of the high-temperature heat pump unit to perform cascade recovery of waste heat in the system.

[0013] Furthermore, it also includes an intelligent control unit, which is electrically connected to the hypergravity machine, the high-temperature heat pump unit, and the heat exchange unit respectively, and is used to monitor the temperature, pressure, and flow parameters of each unit in real time, and adjust the rotation speed of the hypergravity machine, the operating power of the high-temperature heat pump unit, and the medium flow rate of the heat exchange unit.

[0014] Furthermore, the absorbent is a two-phase absorbent, which absorbs CO2 to form a CO2-poor phase and a CO2-rich phase. A phase separator is also provided between the absorption unit and the heat exchange unit to separate the CO2-poor phase and the CO2-rich phase, and only the CO2-rich phase is transported to the desorption unit for desorption treatment.

[0015] Furthermore, both the absorption unit and the desorption unit are equipped with a pressure balancing valve and a safety valve. When the internal pressure of the unit exceeds the set range, the pressure balancing valve automatically opens to adjust the pressure, and the safety valve is used for emergency protection of the internal pressure of the unit.

[0016] Furthermore, both the absorption unit and the desorption unit are provided with an insulation layer on their outer sides. The insulation layer is made of rock wool, polyurethane or glass wool, and the thickness of the insulation layer is 50-150mm.

[0017] To achieve the aforementioned objectives, the second technical solution adopted by this invention is: a carbon capture method for a high-temperature heat pump in a hypergravity machine, applied to the carbon capture system of the high-temperature heat pump in a hypergravity machine, comprising the following steps: S1, CO2-containing flue gas is pretreated to remove impurities and then passed into the supergravity absorber of the absorption unit. At the same time, the lean CO2 absorbent liquid transported by the absorbent circulation unit is atomized by the spray device and comes into efficient contact with the flue gas in the supergravity field. The lean CO2 absorbent liquid absorbs CO2 in the flue gas to form a rich CO2 absorbent liquid. S2, the CO2-rich absorbent enters the heat exchange unit and exchanges heat with the high-temperature CO2-poor absorbent discharged from the desorption unit. The CO2-rich absorbent is heated and the CO2-poor absorbent is cooled. S3, the heated CO2-rich absorbent enters the desorption unit and is compressed into high-temperature and high-pressure gas. The CO2-rich absorbent is heated and decomposed in the hypergravity field to release CO2 gas. S4, the CO2 gas generated by desorption is purified, collected and stored or utilized. The CO2-poor absorbent formed after desorption exchanges heat with the CO2-rich absorbent to cool down, and is then transported back to the absorption unit through the absorbent circulation unit for absorbent circulation. S5, the working fluid of the high-temperature heat pump unit releases heat through the condenser, is throttled and depressurized into a low-temperature, low-pressure liquid, enters the heat exchange unit to collect the system's waste heat, and returns after the working fluid evaporates.

[0018] Furthermore, in step S1, the pretreatment of CO2-containing flue gas includes dust removal, desulfurization, and cooling. After pretreatment, the dust content of the flue gas is ≤10mg / Nm³, the SO2 content is ≤50mg / Nm³, and the temperature is reduced to within ±5℃ of the absorption temperature set by the absorption unit.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. By deeply coupling the high-temperature heat pump unit and the heat exchange unit, the waste heat of the system is recovered in stages and accurately supplied to the desorption unit, replacing the traditional steam heating method, significantly reducing external energy consumption. Combined with the high-efficiency heat exchange design of lean and rich liquids, the overall energy consumption of the system is reduced by more than 30%, effectively controlling operating costs and solving the pain point of high energy consumption in existing technologies.

[0020] 2. Enhanced mass transfer efficiency and compact equipment structure: Both the absorption and desorption units use hypergravity machines as core equipment. By utilizing the hypergravity field, the contact area between the gas and liquid phases is greatly increased and the interface renewal rate is accelerated. Compared with traditional fixed bed and spray tower equipment, the mass transfer efficiency is improved by 40%-60%, while the equipment volume is reduced by more than 50%, improving the system's space adaptability and making it suitable for industrial sites with limited space.

[0021] 3. Optimize system integration and improve operational stability: Achieve precise adaptation between hypergravity technology and high-temperature heat pump technology. Through intelligent control and component collaborative design, solve the problems of low integration and parameter mismatch in existing solutions, and form a closed-loop system of "absorption-heat exchange-desorption-energy recovery" to ensure stable operation of the system under different operating conditions. The CO2 capture efficiency is maintained at over 90%, and the CO2 purity after desorption can reach over 99.5%.

[0022] 4. Extend equipment life and reduce maintenance costs: The rotating parts and delivery pumps of the super gravity machine are made of corrosion-resistant alloy materials, combined with targeted anti-corrosion and heat preservation design, which effectively resists the corrosion of absorbent and flue gas and reduces equipment wear; at the same time, the absorbent circulation and regeneration process is optimized to extend the service life of absorbent and reduce equipment maintenance and consumable replacement costs.

[0023] 5. Wide adaptability and easy to scale up: The system can be flexibly adapted to CO2 flue gas pretreatment conditions in different industries such as power plants, chemical industry, and steel industry. The process parameters can be dynamically adjusted through intelligent control unit. The equipment has a compact structure and is easy to install. It does not require large-scale modification of existing sites, which facilitates industrial-scale application and provides strong support for the popularization of CCUS technology. Attached Figure Description

[0024] Figure 1 This shows a block diagram of the carbon capture system of the supergravity machine composite high-temperature heat pump provided in an embodiment of the present invention; Figure 2The flowchart shows the method based on multi-stage vortex and intelligent feedforward provided by the embodiments of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or system that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or systems.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] like Figure 1 As shown, this embodiment of the invention provides a carbon capture system for a high-temperature heat pump in a supergravity machine, comprising an absorption unit, a heat exchange unit, a desorption unit, and an absorbent circulation unit connected in series to form an absorption-desorption cycle; Both the absorption and desorption units utilize hypergravity machinery. The absorption unit is used to fully absorb CO2 from flue gas and absorbent in a hypergravity field, forming a CO2-rich absorbent liquid. The heat exchange unit and the desorption unit are electrically connected to a high-temperature heat pump unit, which includes a compressor, a condenser, a throttling element, and an evaporator. The condenser is connected to the desorption unit and provides a heat source for the desorption process, while the evaporator is connected to the heat exchange unit and recovers the system's waste heat. The heat exchange unit is used to realize the heat exchange between the CO2-rich absorbent and the CO2-poor absorbent, and to provide a waste heat source for the high-temperature heat pump unit. The desorption unit is used to heat and desorb CO2-rich absorbent in a hypergravity field to release high-purity CO2 gas. The heat requirement of the desorption unit is provided by the condenser of the high-temperature heat pump unit. It should be noted that the high-temperature heat pump unit also includes a working fluid storage tank and a gas-liquid separator. The working fluid storage tank is located between the throttling element and the evaporator and is used to store low-temperature and low-pressure working fluid and compensate for working fluid loss. The gas-liquid separator is located between the evaporator and the compressor and is used to separate unevaporated liquid working fluid to prevent liquid working fluid from entering the compressor and causing liquid slugging damage.

[0029] The absorbent recycling unit is used to transport the lean CO2 absorbent produced by the desorption unit to the absorption unit for absorbent recycling.

[0030] According to an embodiment of the present invention, the supergravity machine of the absorption unit is a supergravity absorber. The supergravity absorber is equipped with a spray device and a rotating packing bed. The spray device is connected to the lean liquid output end of the absorbent circulation unit. The air inlet of the supergravity absorber is connected to the CO2-containing flue gas pretreatment device. The liquid outlet is connected to the rich liquid input end of the heat exchange unit.

[0031] It should be noted that the rotation speed of the supergravity absorber is adjustable from 500 to 3000 r / min, the liquid-to-gas ratio of flue gas to absorbent is controlled at 1-5 L / m³, and the absorption temperature is maintained at 30-60℃.

[0032] According to an embodiment of the present invention, the hypergravity machine of the desorption unit is a hypergravity desorber. The hypergravity desorber is provided with a heating chamber and a rotating separation structure. The heating chamber is connected to the condenser of the high-temperature heat pump unit through a heat transfer medium pipeline. The gas outlet of the hypergravity desorber is connected to the CO2 purification treatment device, and the liquid outlet is connected to the lean liquid input end of the heat exchange unit.

[0033] It should be noted that the speed adjustment range of the supergravity desorption machine is 800-3500 r / min, the desorption temperature is maintained at 80-150℃, the heat provided by the high-temperature heat pump unit accounts for 70-95% of the total heat demand for desorption, and the remaining heat is supplemented by the system waste heat.

[0034] Furthermore, the outer layer of the heat transfer medium pipeline is equipped with a heat insulation protective sleeve, and a temperature sensor and a flow control valve are connected in series on the pipeline. The temperature sensor and the flow control valve are both electrically connected to the intelligent control unit to regulate the temperature and circulation flow of the heat transfer medium in real time.

[0035] According to an embodiment of the present invention, the heat exchange unit includes a lean-rich liquid heat exchanger and a waste heat recovery heat exchanger. The rich liquid channel of the lean-rich liquid heat exchanger is connected to the liquid outlet of the absorption unit and the liquid inlet of the desorption unit, and the lean liquid channel is connected to the liquid outlet of the desorption unit and the liquid inlet of the absorption unit. The heat source channel of the waste heat recovery heat exchanger is connected to the waste heat discharge end of the desorption unit, and the cold source channel is connected to the evaporator of the high-temperature heat pump unit to perform cascade recovery of waste heat in the system.

[0036] According to an embodiment of the present invention, it further includes an intelligent control unit, which is electrically connected to the hypergravity machine, the high-temperature heat pump unit, and the heat exchange unit respectively, for real-time monitoring of the temperature, pressure, and flow parameters of each unit, and adjusting the rotation speed of the hypergravity machine, the operating power of the high-temperature heat pump unit, and the medium flow rate of the heat exchange unit.

[0037] According to an embodiment of the present invention, the absorbent is a two-phase absorbent, which absorbs CO2 to form a CO2-poor phase and a CO2-rich phase. A phase separator is also provided between the absorption unit and the heat exchange unit to separate the CO2-poor phase and the CO2-rich phase, and only the CO2-rich phase is transported to the desorption unit for desorption treatment.

[0038] According to an embodiment of the present invention, both the absorption unit and the desorption unit are equipped with a pressure balancing valve and a safety valve. When the internal pressure of the unit exceeds the set range, the pressure balancing valve automatically opens to adjust the pressure, and the safety valve is used for emergency protection of the internal pressure of the unit.

[0039] According to an embodiment of the present invention, both the absorption unit and the desorption unit are provided with an insulation layer on their outer sides. The insulation layer is made of rock wool, polyurethane or glass wool, and the thickness of the insulation layer is 50-150mm.

[0040] like Figure 2 As shown, to achieve the above-mentioned objective, the second technical solution adopted by this invention is: a carbon capture method for a high-temperature heat pump in a hypergravity machine, applied to the carbon capture system of a high-temperature heat pump in a hypergravity machine, comprising the following steps: S1, CO2-containing flue gas is pretreated to remove impurities and then passed into the supergravity absorber of the absorption unit. At the same time, the lean CO2 absorbent liquid transported by the absorbent circulation unit is atomized by the spray device and comes into efficient contact with the flue gas in the supergravity field. The lean CO2 absorbent liquid absorbs CO2 in the flue gas to form a rich CO2 absorbent liquid. It should be noted that the absorbent circulation unit includes a delivery pump, a buffer tank, and a flow regulating valve. The buffer tank is located between the desorption unit and the heat exchange unit and is used to store lean CO2 absorbent and stabilize the liquid pressure. The flow regulating valve is electrically connected to the intelligent control unit to achieve precise control of the absorbent delivery flow rate.

[0041] Specifically, the intelligent control unit has a built-in PID adjustment module that can dynamically adjust the speed of the hypergravity machine and the operating parameters of the high-temperature heat pump based on the feedback signals of CO2 concentration at the outlet of the absorption unit and CO2 purity at the outlet of the desorption unit, thereby achieving closed-loop control.

[0042] Furthermore, during the absorbent cycle, the absorbent is sampled and tested every 24-48 hours. When the CO2 saturation absorption capacity of the absorbent drops below 80% of the initial value, new absorbent is added or the exhausted absorbent is regenerated.

[0043] Furthermore, the oxygen content of CO2-containing flue gas after pretreatment is controlled at 2-8 vol%, to avoid oxidation and failure of the absorbent due to a high-oxygen environment, thereby extending the service life of the absorbent and maintaining stable absorption efficiency.

[0044] S2, the CO2-rich absorbent enters the heat exchange unit and exchanges heat with the high-temperature CO2-poor absorbent discharged from the desorption unit. The CO2-rich absorbent is heated and the CO2-poor absorbent is cooled. S3, the heated CO2-rich absorbent enters the desorption unit and is compressed into high-temperature and high-pressure gas. The CO2-rich absorbent is heated and decomposed in the hypergravity field to release CO2 gas. It should be noted that after being heated, the CO2-rich absorbent enters the hypergravity desorber of the desorption unit. At the same time, the high-temperature heat pump unit starts, and the compressor compresses the working fluid into a high-temperature, high-pressure gas, which is sent to the condenser to release heat. The heat is transferred to the heating chamber of the hypergravity desorber, providing a heat source for the desorption of the CO2-rich absorbent. The CO2-rich absorbent decomposes under heat in the hypergravity field, releasing CO2 gas. The heat transfer medium between the condenser of the high-temperature heat pump unit and the heating chamber of the hypergravity desorber is heat transfer oil or molten salt. The circulating temperature of the heat transfer medium is maintained at 100-160℃ to ensure efficient heat transfer to the desorption system.

[0045] S4, the CO2 gas generated by desorption is purified, collected and stored or utilized. The CO2-poor absorbent formed after desorption exchanges heat with the CO2-rich absorbent to cool down, and is then transported back to the absorption unit through the absorbent circulation unit for absorbent circulation.

[0046] S5, the working fluid of the high-temperature heat pump unit releases heat through the condenser, is throttled and depressurized into a low-temperature, low-pressure liquid, enters the heat exchange unit to collect the system's waste heat, and returns after the working fluid evaporates.

[0047] According to an embodiment of the present invention, in step S1, the pretreatment of CO2-containing flue gas includes dust removal, desulfurization and cooling treatment. After pretreatment, the dust content of the flue gas is ≤10mg / Nm³, the SO2 content is ≤50mg / Nm³, and the temperature is reduced to within ±5℃ of the difference between the pretreated and the absorption temperature set by the absorption unit.

[0048] In summary, the present invention has the following advantages compared with the prior art: 1. By deeply coupling the high-temperature heat pump unit and the heat exchange unit, the waste heat of the system is recovered in stages and accurately supplied to the desorption unit, replacing the traditional steam heating method, significantly reducing external energy consumption. Combined with the high-efficiency heat exchange design of lean and rich liquids, the overall energy consumption of the system is reduced by more than 30%, effectively controlling operating costs and solving the pain point of high energy consumption in existing technologies.

[0049] 2. Enhanced mass transfer efficiency and compact equipment structure: Both the absorption and desorption units use hypergravity machines as core equipment. By utilizing the hypergravity field, the contact area between the gas and liquid phases is greatly increased and the interface renewal rate is accelerated. Compared with traditional fixed bed and spray tower equipment, the mass transfer efficiency is improved by 40%-60%, while the equipment volume is reduced by more than 50%, improving the system's space adaptability and making it suitable for industrial sites with limited space.

[0050] 3. Optimize system integration and improve operational stability: Achieve precise adaptation between hypergravity technology and high-temperature heat pump technology. Through intelligent control and component collaborative design, solve the problems of low integration and parameter mismatch in existing solutions, and form a closed-loop system of "absorption-heat exchange-desorption-energy recovery" to ensure stable operation of the system under different operating conditions. The CO2 capture efficiency is maintained at over 90%, and the CO2 purity after desorption can reach over 99.5%.

[0051] 4. Extend equipment life and reduce maintenance costs: The rotating parts and delivery pumps of the super gravity machine are made of corrosion-resistant alloy materials, combined with targeted anti-corrosion and heat preservation design, which effectively resists the corrosion of absorbent and flue gas and reduces equipment wear; at the same time, the absorbent circulation and regeneration process is optimized to extend the service life of absorbent and reduce equipment maintenance and consumable replacement costs.

[0052] 5. Wide adaptability and easy to scale up: The system can be flexibly adapted to CO2 flue gas pretreatment conditions in different industries such as power plants, chemical industry, and steel industry. The process parameters can be dynamically adjusted through intelligent control unit. The equipment has a compact structure and is easy to install. It does not require large-scale modification of existing sites, which facilitates industrial-scale application and provides strong support for the popularization of CCUS technology.

[0053] Those skilled in the art will understand that, for ease of explanation, the example is provided with one memory and one processor. In actual terminals or servers, multiple processors and memories may exist. Memory can also be referred to as storage medium or storage device, etc., and the embodiments of this application do not limit this.

[0054] It should be understood that in the embodiments of this application, the processor may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor may also be a general-purpose microprocessor, graphics processing unit (GPU), or one or more integrated circuits to execute relevant programs to achieve the functions required by the embodiments of this application.

[0055] The processor can also be an integrated circuit chip with signal processing capabilities. In implementation, each step of this application can be completed through integrated logic circuits in the processor hardware or instructions in software form. The aforementioned processor can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The steps of the methods disclosed in the embodiments of this application can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the functions required by the units included in the methods, systems, and storage media of the embodiments of this application.

[0056] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache.

[0057] By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

[0058] The memory can also be a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, optical disk storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media, or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures that can be accessed by a computer, but is not limited thereto. The memory can exist independently and be connected to the processor via a bus. The memory can also be integrated with the processor. The memory can store programs, and when the program stored in the memory is executed by the processor, the processor performs the various steps of the method determined in the above embodiments of this application.

[0059] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated into the processor. It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0060] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0061] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules within the processor. The software modules can reside in mature storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. Since this storage medium is located in memory, the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method; to avoid repetition, these will not be described in detail here.

[0062] Those skilled in the art will recognize that the various illustrative logical blocks (ILBs) and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0063] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer-programmed program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a processor, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a computer network, or other programmable device.

[0064] This embodiment also provides a computer-readable storage medium storing a computer program that causes a computer to execute in order to implement the above-described method based on multi-stage vortex and intelligent feedforward.

[0065] It should be noted that computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic) or wireless (e.g., infrared, wireless, microwave, etc.) means, or from one website, computer, server, or data center to a mobile phone processor via a wired means. A computer-readable storage medium can be any usable medium that a computer can access, or a data storage system such as a server or data center that integrates one or more usable media. Usable media can be magnetic media (e.g., floppy disks, hard disks), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives), etc.

[0066] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A carbon capture system for a high-gravity machine combined with a high-temperature heat pump, characterized in that, It includes an absorption unit, a heat exchange unit, a desorption unit, and an absorbent circulation unit that are connected in series to form an absorption-desorption cycle; Both the absorption unit and the desorption unit employ hypergravity machines. The absorption unit is used to fully absorb CO2 from flue gas and absorbent in a hypergravity field, forming a CO2-rich absorbent liquid. The heat exchange unit and the desorption unit are electrically connected to a high-temperature heat pump unit. The high-temperature heat pump unit includes a compressor, a condenser, a throttling element, and an evaporator. The condenser is connected to the desorption unit and provides a heat source for the desorption process. The evaporator is connected to the heat exchange unit and recovers waste heat from the system. The heat exchange unit is used to realize the heat exchange between the CO2-rich absorbent and the CO2-poor absorbent, and to provide a waste heat source for the high-temperature heat pump unit. The desorption unit is used to heat and desorb CO2-rich absorbent in a hypergravity field to release high-purity CO2 gas. The heat requirement of the desorption unit is provided by the condenser of the high-temperature heat pump unit. The absorbent recycling unit is used to transport the lean CO2 absorbent solution generated by the desorption unit to the absorption unit for absorbent recycling.

2. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 1, characterized in that, The supergravity machine of the absorption unit is a supergravity absorber. The supergravity absorber is equipped with a spray device and a rotating packing bed. The spray device is connected to the lean liquid output end of the absorbent circulation unit. The air inlet of the supergravity absorber is connected to the CO2-containing flue gas pretreatment device, and the liquid outlet is connected to the rich liquid input end of the heat exchange unit.

3. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 2, characterized in that, The desorption unit's hypergravity machine is a hypergravity desorber. The hypergravity desorber has a heating chamber and a rotating separation structure inside. The heating chamber is connected to the condenser of the high-temperature heat pump unit through a heat transfer medium pipeline. The gas outlet of the hypergravity desorber is connected to the CO2 purification treatment device, and the liquid outlet is connected to the lean liquid input end of the heat exchange unit.

4. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 3, characterized in that, The heat exchange unit includes a lean-rich liquid heat exchanger and a waste heat recovery heat exchanger. The rich liquid channel of the lean-rich liquid heat exchanger is connected to the liquid outlet of the absorption unit and the liquid inlet of the desorption unit, and the lean liquid channel is connected to the liquid outlet of the desorption unit and the liquid inlet of the absorption unit. The heat source channel of the waste heat recovery heat exchanger is connected to the waste heat discharge end of the desorption unit, and the cold source channel is connected to the evaporator of the high-temperature heat pump unit to perform cascade recovery of waste heat in the system.

5. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 4, characterized in that, It also includes an intelligent control unit, which is electrically connected to the hypergravity machine, the high-temperature heat pump unit, and the heat exchange unit, respectively, and is used to monitor the temperature, pressure, and flow parameters of each unit in real time, and adjust the rotation speed of the hypergravity machine, the operating power of the high-temperature heat pump unit, and the medium flow rate of the heat exchange unit.

6. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 1, characterized in that, The absorbent is a two-phase absorbent, which absorbs CO2 to form a CO2-poor phase and a CO2-rich phase. A phase separator is also provided between the absorption unit and the heat exchange unit to separate the CO2-poor phase and the CO2-rich phase, and only the CO2-rich phase is transported to the desorption unit for desorption treatment.

7. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 6, characterized in that, Both the absorption unit and the desorption unit are equipped with a pressure balancing valve and a safety valve. When the internal pressure of the unit exceeds the set range, the pressure balancing valve automatically opens to adjust the pressure, and the safety valve is used for emergency protection of the internal pressure of the unit.

8. The carbon capture system of the high-gravity machine composite high-temperature heat pump as described in claim 1, characterized in that, Both the absorption unit and the desorption unit are provided with an insulation layer on their outer side. The insulation layer is made of rock wool, polyurethane or glass wool and has a thickness of 50-150mm.

9. A carbon capture method for a high-gravity machine-composite high-temperature heat pump, applied to the carbon capture system of the high-gravity machine-composite high-temperature heat pump as described in any one of claims 1-8, characterized in that, Includes the following steps: S1, CO2-containing flue gas is pretreated to remove impurities and then passed into the supergravity absorber of the absorption unit. At the same time, the lean CO2 absorbent liquid transported by the absorbent circulation unit is atomized by the spray device and comes into efficient contact with the flue gas in the supergravity field. The lean CO2 absorbent liquid absorbs CO2 in the flue gas to form a rich CO2 absorbent liquid. S2, the CO2-rich absorbent enters the heat exchange unit and exchanges heat with the high-temperature CO2-poor absorbent discharged from the desorption unit. The CO2-rich absorbent is heated and the CO2-poor absorbent is cooled. S3, the heated CO2-rich absorbent enters the desorption unit and is compressed into high-temperature and high-pressure gas. The CO2-rich absorbent is heated and decomposed in the hypergravity field to release CO2 gas. S4, the CO2 gas generated by desorption is purified, collected and stored or utilized. The CO2-poor absorbent formed after desorption exchanges heat with the CO2-rich absorbent to cool down, and is then transported back to the absorption unit through the absorbent circulation unit for absorbent circulation. S5, the working fluid of the high-temperature heat pump unit releases heat through the condenser, is throttled and depressurized into a low-temperature, low-pressure liquid, enters the heat exchange unit to collect the system's waste heat, and returns after the working fluid evaporates.

10. The carbon capture method of the supergravity machine combined high-temperature heat pump as described in claim 9, characterized in that, In step S1, the pretreatment of CO2-containing flue gas includes dust removal, desulfurization and cooling. After pretreatment, the dust content of the flue gas is ≤10mg / Nm³, the SO2 content is ≤50mg / Nm³, and the temperature is reduced to within ±5℃ of the set absorption temperature of the absorption unit.

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