Method and device for removing amine liquid thermal stabilizer salt, electronic equipment and storage medium

Abstract

The application discloses an amine liquid thermal stable salt removal method, device, electronic equipment and storage medium, which first pretreats the amine liquid containing thermal stable salt, then implements staged desalination through a segmented electrodialysis device, matches concentrated side permeate pressure balancing control to reduce the accompanying migration of effective amines, combines the periodic reversal operation of the electrode to weaken the polarization effect, simultaneously circulates and utilizes the mother liquor after crystallization separation, replaces the traditional alkali chemical regeneration or conventional electrodialysis extensive treatment mode, inhibits amine loss and system corrosion from the source, optimizes the energy consumption and resource utilization rate of the desalination process, achieves the technical effects of maintaining the effective concentration of the amine liquid, reducing system corrosion, reducing energy consumption and reagent consumption, reducing pollutant emission, guaranteeing long-term stable operation of the decarburization device, and significantly improving the economic benefit and environmental protection compliance of the decarburization system.

Description

Technical Field

[0001] This disclosure relates to the field of data processing technology, and in particular to a method, apparatus, electronic device, and storage medium for removing thermally stabilized salts from amine solutions. Background Technology

[0002] In carbon capture, utilization, and storage technologies, chemical absorption decarbonization devices widely employ amine-based absorbents for flue gas treatment. Related technologies utilize the synergistic operation of absorbent recycling and pyrolysis regeneration in a regeneration tower to construct a continuous decarbonization system.

[0003] Existing methods for removing heat-stable salts, such as direct chemical regeneration with alkali or conventional electrodialysis desalination, lead to a continuous decrease in effective amine concentration, enhanced system corrosion, increased energy consumption, and increased emissions and reagent consumption, thereby affecting the long-term stable operation and economic benefits of the decarbonization unit. Summary of the Invention

[0004] This disclosure provides a method, apparatus, electronic device, and storage medium for removing amine liquid heat-stabilized salts.

[0005] According to a first aspect of this disclosure, a method for removing amine liquid heat-stabilized salts is provided, comprising:

[0006] Pretreatment of amine solutions containing heat-stable salts; The pretreated amine solution is fed into a segmented electrodialysis device, and desalination is performed in stages by different operating conditions in the front and back sections. In particular, osmotic pressure balancing control is performed on the concentration side to suppress the accompanying migration of amine, and periodic electrode reversal operation is used to weaken the polarization effect. The concentrate is crystallized, and after the solid salts are separated, the mother liquor is returned to the osmotic pressure balancing circuit for recycling.

[0007] Optionally, the step of passing the pretreated amine solution into a segmented electrodialysis device for graded desalination through differentiated operating conditions between the front and rear stages includes: An inert isotonic salt solution is introduced into the concentration side, and the osmotic pressure difference between the concentration side and the desalination side is controlled to not exceed a preset threshold.

[0008] Optionally, the inert isotonic salt solution is a sodium sulfate solution or a potassium sulfate solution.

[0009] Optionally, the step of passing the pretreated amine solution into a segmented electrodialysis device for graded desalination through differentiated operating conditions between the front and rear stages includes: Electrode polarity reversal is performed at a preset period; wherein the current density of the reversal segment does not exceed a preset ratio of the forward current density, so as to reduce film surface polarization and boundary layer enrichment.

[0010] Optionally, the crystallization treatment of the concentrate, followed by separation of solid salts and recirculation of the mother liquor back to the osmotic pressure balancing loop for recycling, includes: In the first crystallization stage, supersaturation is controlled and seed crystals are introduced to promote nucleation and growth. In the second crystallization stage, low-shear aging is performed to separate solid salts.

[0011] Optionally, the method further includes: With the outlet thermally stable salt concentration and unit energy consumption as control targets, and the pressure difference and voltage fluctuations constrained, adaptive optimization control is performed on the electrodialysis power supply, pump valves, and online cleaning.

[0012] According to a second aspect of this disclosure, an amine liquid heat-stabilized salt removal apparatus is provided, comprising: A pretreatment unit is used to pretreat amine solutions containing heat-stable salts; The staged desalination unit is used to pass the pretreated amine solution into a staged electrodialysis device and perform staged desalination by different operating conditions between the front and back sections; wherein, osmotic pressure balancing control is performed on the concentration side to suppress the accompanying migration of amine, and periodic electrode reversal operation is used to weaken the polarization effect. The crystallization reflux unit is used to crystallize the concentrate, and after separating the solid salts, the mother liquor is refluxed back to the osmotic pressure balancing circuit for recycling.

[0013] Optionally, the staged desalination unit is further used for: An inert isotonic salt solution is introduced into the concentration side, and the osmotic pressure difference between the concentration side and the desalination side is controlled to not exceed a preset threshold.

[0014] Optionally, the inert isotonic salt solution is a sodium sulfate solution or a potassium sulfate solution.

[0015] Optionally, the staged desalination unit is further used for: Electrode polarity reversal is performed at a preset period; wherein the current density of the reversal segment does not exceed a preset ratio of the forward current density, so as to reduce film surface polarization and boundary layer enrichment.

[0016] Optionally, the crystallization reflux unit is further used for: In the first crystallization stage, supersaturation is controlled and seed crystals are introduced to promote nucleation and growth. In the second crystallization stage, low-shear aging is performed to separate solid salts.

[0017] Optionally, an optimized control unit may also be included; The optimization control unit is used for: With the outlet thermally stable salt concentration and unit energy consumption as control targets, and the pressure difference and voltage fluctuations constrained, adaptive optimization control is performed on the electrodialysis power supply, pump valves, and online cleaning.

[0018] According to a third aspect of this disclosure, an electronic device is provided, comprising: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect above.

[0019] According to a fourth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions, wherein the computer instructions are configured to cause the computer to perform the method described in the first aspect above.

[0020] According to a fifth aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0021] The amine solution heat-stable salt removal method, apparatus, electronic equipment, and storage medium disclosed herein pre-treat the amine solution containing heat-stable salts, and then perform staged desalination through a segmented electrodialysis device. This is combined with osmotic pressure balancing control on the concentration side to reduce the accompanying migration of effective amines, and periodic electrode reversal operation to weaken the polarization effect. Simultaneously, the mother liquor after crystallization separation is recycled, replacing the crude treatment methods of traditional alkali chemical regeneration or conventional electrodialysis. This approach inhibits amine loss and system corrosion at the source, optimizes energy consumption and resource utilization in the desalination process, and thus solves the technical problems of existing heat-stable salt removal methods leading to a continuous decrease in effective amine concentration, enhanced system corrosion, increased energy consumption, and increased emissions and reagent consumption, thereby affecting the long-term stable operation and economic benefits of the decarbonization device. The method achieves the technical effects of maintaining the effective concentration of amine solution, reducing system corrosion, lowering energy and reagent consumption, reducing pollutant emissions, ensuring the long-term stable operation of the decarbonization device, and significantly improving the economic benefits and environmental compliance of the decarbonization system.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0023] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein: Figure 1 This is a schematic flowchart of a method for removing amine-stabilized salts provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of an amine liquid heat-stabilized salt removal device provided in an embodiment of the present disclosure; Figure 3This is a schematic diagram of the structure of an amine liquid heat-stabilized salt removal device provided in an embodiment of the present disclosure; Figure 4 A schematic block diagram of an example electronic device provided for embodiments of this disclosure. Detailed Implementation

[0024] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0025] The following description, with reference to the accompanying drawings, outlines an embodiment of a method, apparatus, electronic device, and storage medium for removing amine liquid heat-stabilized salts.

[0026] Figure 1 This is a schematic flowchart of a method for removing amine-stabilized salts provided in an embodiment of this disclosure.

[0027] like Figure 1 As shown, the method includes the following steps: Step 101: Pretreatment of the amine solution containing heat-stable salts; The pretreatment step aims to remove suspended particles, colloids, or other mechanical impurities from the amine solution that may adversely affect the subsequent electrodialysis desalination process, thereby preventing membrane fouling, channel blockage, and decreased mass transfer efficiency. Pretreatment can employ physical separation methods, such as particle size-based filtration, with the retention precision determined based on the particle size distribution of impurities in the amine solution and the tolerance of the electrodialysis membrane. Pretreatment ensures that the amine solution entering the electrodialysis unit meets certain cleanliness requirements, thus guaranteeing the stable operation of subsequent desalination processes and extending the lifespan of the membrane module. As one implementation, this pretreatment can be achieved using a filter pore size in the 5 to 20 micrometer range.

[0028] Step 102: The pretreated amine solution is passed into a segmented electrodialysis device, and desalination is performed in stages by different operating conditions of the front and back sections; wherein, osmotic pressure balancing control is performed on the concentration side to suppress the accompanying migration of amine, and periodic electrode reversal operation is used to weaken the polarization effect. The segmented electrodialysis device includes at least a front desalination zone and a rear desalination zone arranged sequentially along the flow direction. The two zones are configured differently in terms of operating conditions so that the amine solution undergoes a relatively enhanced desalination process in the front section to quickly remove most of the heat-stable salts, and undergoes a relatively fine desalination process in the rear section to achieve deep removal of residual salts.

[0029] During the desalination process, osmotic pressure balancing control is implemented on the concentration side of the device. By adjusting the concentration of non-amine solutes or inert salts in the concentration side fluid, the osmotic pressure difference across the membrane is maintained below a preset threshold, thereby inhibiting the uncontrollable migration of water molecules and amine molecules along with salt ions to the concentration side and reducing amine loss.

[0030] Introducing periodic electrode reversal during electrodialysis operation involves alternating the direction of the electric field at set time intervals. This causes charged substances that were originally deposited or enriched on the membrane surface to detach from the membrane interface under the action of the reverse electric field, thereby weakening the concentration polarization effect and boundary layer accumulation, maintaining the mass transfer efficiency of the membrane stack and reducing additional energy consumption.

[0031] In one specific embodiment, the segmented electrodialysis device can be configured with a high-efficiency desalination zone and a fine desalination zone, which employ different current density ratios, Reynolds numbers, and flow channel spacing mesh heights; the concentration side can control the osmotic pressure difference to within 0.3 MPa by introducing an inert isotonic salt solution; the periodic reversal of the electrodes can be set to a period of 10 to 120 seconds, a duty cycle of 10% to 40%, and the reverse current density not exceeding half of the forward current density.

[0032] Step 103: Crystallize the concentrate, separate the solid salts, and then return the mother liquor to the osmotic pressure balancing circuit for recycling.

[0033] Crystallization aims to precipitate salts from the concentrate in solid form, thereby achieving effective separation of salts from the liquid phase. The crystallization process employs physicochemical methods that control supersaturation and crystal growth, allowing salts to nucleate and grow in an orderly manner, ultimately forming a separable solid phase. After the solid salts are separated, the remaining mother liquor is not discarded directly but is refluxed to the concentration side of the electrodialysis unit as a circulating medium in the osmotic pressure balancing loop. Through this reflux operation, inert salts or osmotic pressure regulating components contained in the mother liquor are retained and circulated within the system, thus maintaining the osmotic pressure balancing capability of the concentration side, reducing the amount of external balancing reagents needed, and lowering wastewater discharge.

[0034] The specific implementation method of crystallization can be adjusted according to the type, concentration and purity requirements of salt, such as using single-stage or multi-stage crystallization, controlling the supersaturation range, introducing seed crystals or aging, etc.

[0035] In one implementation, the concentrate can be sequentially introduced into a first crystallization section with supersaturation control and a second crystallization section with low shear aging. After solid salt separation, the mother liquor is returned to the osmotic pressure balancing circuit.

[0036] In some embodiments, passing the pretreated amine solution into a segmented electrodialysis apparatus for graded desalination through differentiated operating conditions between the front and rear stages includes: An inert isotonic salt solution is introduced into the concentration side, and the osmotic pressure difference between the concentration side and the desalination side is controlled to not exceed a preset threshold.

[0037] An inert isotonic salt solution is introduced into the concentration side of the electrodialysis unit. This inert isotonic salt solution preferably uses salts such as sodium sulfate or potassium sulfate that do not react with the amine solution and have good conductivity and chemical stability. It is prepared to a concentration approximately equivalent to the osmotic pressure of the amine solution and then continuously or intermittently introduced into the concentration side circuit. Simultaneously, during operation, the osmotic pressure difference between the two sides is calculated online using osmotic pressure sensors installed on both the desalination and concentration sides, or by using related parameters such as conductivity and temperature, and this osmotic pressure difference is controlled to not exceed a preset threshold.

[0038] The threshold is pre-calibrated based on the membrane material's pressure resistance, the amine solution's permeation characteristics, and the permissible amine loss. When the detected osmotic pressure difference approaches or exceeds the threshold, the osmotic pressure difference is brought back below the threshold by adjusting the injection flow rate and concentration of the inert isotonic salt solution or by adjusting the discharge and replenishment rates on the concentration side.

[0039] In one specific embodiment, sodium sulfate solution is used as an inert isotonic salt solution, and the osmotic pressure difference between the concentration side and the desalination side is controlled to be no higher than 0.3 MPa, preferably no higher than 0.2 MPa, thereby effectively suppressing the co-migration of water and amine.

[0040] In some embodiments, the inert isotonic salt solution is a sodium sulfate solution or a potassium sulfate solution.

[0041] In some embodiments, passing the pretreated amine solution into a segmented electrodialysis apparatus for graded desalination through differentiated operating conditions between the front and rear stages includes: Electrode polarity reversal is performed at a preset period; wherein the current density of the reversal segment does not exceed a preset ratio of the forward current density, so as to reduce film surface polarization and boundary layer enrichment.

[0042] The electrode polarity is alternately switched at a preset time period. This period can be preset based on the conductivity, salt concentration, and membrane stack structure of the amine solution. In one specific embodiment, the electrode polarity reversal period is set to 10 to 120 seconds. During each reversal operation, the proportion of the reverse electric field duration after the electrode polarity switch to the total time of that period (i.e., the reversal duty cycle) is controlled to be 10% to 40%. More importantly, during the reversal phase, the reverse current density is limited to a preset proportion of the forward current density. This preset proportion is determined based on the electrochemical tolerance of the membrane material and the attenuation effect of the polarization layer. In one specific embodiment, the current density during the reversal phase is limited to no more than 0.5 times the forward current density.

[0043] This current-limiting measure not only utilizes the reverse electric field to drive charged colloids, organic contaminants, or salt crystals deposited on the membrane surface away from the membrane interface, but also avoids excessive heat accumulation, membrane damage, or reverse loss of desalination efficiency caused by excessive reverse current. Electrode polarity reversal operation can be continuously cyclically executed at fixed time intervals, or it can be adaptively adjusted according to changes in unit voltage or transmembrane voltage difference in the membrane stack. During operation, the forward desalination stage and the reverse cleaning stage alternate, thereby maintaining the cleanliness of the membrane surface and the patency of ion migration channels.

[0044] In some embodiments, the crystallization treatment of the concentrate, the separation of solid salts, and the recirculation of the mother liquor back to the osmotic pressure balancing circuit for recycling include: In the first crystallization stage, supersaturation is controlled and seed crystals are introduced to promote nucleation and growth. In the second crystallization stage, low-shear aging is performed to separate solid salts.

[0045] The concentrate first enters the first crystallization section. In this section, the supersaturation index of the solution is maintained within the range of 1.1 to 1.4, which can be adjusted in real time based on the solubility curve of the salt in the concentrate and temperature parameters. Simultaneously, a seed crystal circuit is set up in the first crystallization section, where pre-prepared or added seed crystals are continuously or intermittently introduced into the crystallizer to provide a nucleation surface for salt precipitation, thereby inducing preferential growth of the solute on the seed crystals and avoiding excessive fine crystals caused by explosive homogeneous nucleation.

[0046] By controlling supersaturation and supplementing with seed crystals, the uniformity of crystal size distribution and the stabilization of the growth process are achieved. After the first crystallization stage, the slurry containing crystals enters the second crystallization stage. In the second crystallization stage, a low-shear aging operation is adopted, that is, by means of low-speed stirring, air lifting, or non-powered settling, the crystals are further matured in an environment with almost no shear or extremely low shear force.

[0047] During the aging process, small crystals dissolve and redeposit on the surface of larger crystals, thereby increasing crystal size and purity while reducing fine particles generated from crystal breakage. After aging, solid salts are separated using a solid-liquid separation device (such as a centrifuge, belt filter, or filter press). The resulting mother liquor is not returned to the crystallization system but is instead piped back to the concentration side of the electrodialysis unit as a supplementary medium for the osmotic pressure balancing circuit, maintaining the concentration balance of inert salts on the concentration side and reducing outflow.

[0048] In some embodiments, the method further includes: With the outlet thermally stable salt concentration and unit energy consumption as control targets, and the pressure difference and voltage fluctuations constrained, adaptive optimization control is performed on the electrodialysis power supply, pump valves, and online cleaning.

[0049] An online detector for the concentration of thermally stable salts (such as a conductivity meter or ion chromatography line) is installed at the desalination side outlet of the electrodialysis unit, and an energy consumption metering module is installed at the power input to acquire two key performance indicators in real time: the outlet thermally stable salt concentration and unit energy consumption. These two indicators are used as dual target settings for the control system. Simultaneously, differential pressure transmitters are installed at the inlet and outlet of the desalination and concentration sides of the membrane stack to monitor the transmembrane pressure difference. Unit-to-unit voltage taps are installed on every 5 to 10 pairs of membrane units in the electrodialysis membrane stack to collect the real-time voltage values ​​of each membrane unit. Based on the collected data, the control system establishes constraints on pressure difference fluctuations and unit-to-unit voltage fluctuations.

[0050] During operation, the model predictive controller continuously optimizes and calculates the operating instructions for the next moment based on the current outlet salt concentration, unit energy consumption, pressure difference, and voltage distribution. These instructions include, but are not limited to: adjusting the output current or voltage of the electrodialysis power supply to control the migration rate; adjusting the opening or speed of the feed pump, circulation pump, and concentrate discharge valve to control the flow rate and pressure of each flow path; and triggering the start time and cleaning parameters of the online cleaning program.

[0051] The online cleaning operation automatically decides based on the health index. When the overall health index is lower than a preset threshold (e.g., 0.85), the control system automatically executes alternating weak acid and weak alkali pulse cleaning, with each cleaning lasting 5 to 15 minutes. Through the above adaptive optimization control, the electrodialysis system automatically maintains optimal desalination efficiency and energy consumption balance under different load and water quality conditions.

[0052] Corresponding to the above-described method for removing heat-stabilized amine salts, this invention also proposes an apparatus for removing heat-stabilized amine salts. Since the apparatus embodiments of this invention correspond to the method embodiments described above, details not disclosed in the apparatus embodiments can be referred to in the method embodiments described above, and will not be repeated here.

[0053] Figure 2 This is a schematic diagram of the structure of an amine liquid heat-stabilized salt removal device provided in an embodiment of this disclosure, as shown below. Figure 2 As shown, it includes: Pretreatment unit 21 is used to pretreat amine solutions containing heat-stable salts; The staged desalination unit 22 is used to pass the pretreated amine solution into the staged electrodialysis device and perform staged desalination through differentiated operating conditions between the front and back stages; wherein, osmotic pressure balancing control is performed on the concentration side to suppress the accompanying migration of amine, and periodic electrode reversal operation is used to weaken the polarization effect. The crystallization reflux unit 23 is used to crystallize the concentrate, and after separating the solid salt, the mother liquor is refluxed back to the osmotic pressure balancing circuit for recycling.

[0054] Furthermore, in one possible implementation of this disclosure embodiment, the staged desalination unit 22 is further configured to: An inert isotonic salt solution is introduced into the concentration side, and the osmotic pressure difference between the concentration side and the desalination side is controlled to not exceed a preset threshold.

[0055] Furthermore, in one possible implementation of this disclosure, the inert isotonic salt solution is a sodium sulfate solution or a potassium sulfate solution.

[0056] Furthermore, in one possible implementation of this disclosure embodiment, the staged desalination unit 22 is further configured to: Electrode polarity reversal is performed at a preset period; wherein the current density of the reversal segment does not exceed a preset ratio of the forward current density, so as to reduce film surface polarization and boundary layer enrichment.

[0057] Furthermore, in one possible implementation of this disclosure, the crystallization reflux unit 23 is further used for: In the first crystallization stage, supersaturation is controlled and seed crystals are introduced to promote nucleation and growth. In the second crystallization stage, low-shear aging is performed to separate solid salts.

[0058] Furthermore, in one possible implementation of the embodiments of this disclosure, such as Figure 3 As shown, it also includes an optimization control unit 24; The optimization control unit 24 is used for: With the outlet thermally stable salt concentration and unit energy consumption as control targets, and the pressure difference and voltage fluctuations constrained, adaptive optimization control is performed on the electrodialysis power supply, pump valves, and online cleaning.

[0059] It should be noted that the foregoing explanation of the method embodiments also applies to the apparatus of the embodiments of this disclosure, and the principle is the same. Therefore, the embodiments of this disclosure are not limited thereto.

[0060] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0061] Figure 4 A schematic block diagram of an example electronic device 400 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0062] like Figure 4 As shown, device 400 includes a computing unit 401, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 402 or a computer program loaded from storage unit 408 into RAM (Random Access Memory) 403. RAM 403 may also store various programs and data required for the operation of device 400. The computing unit 401, ROM 402, and RAM 403 are interconnected via bus 404. I / O (Input / Output) interface 405 is also connected to bus 404.

[0063] Multiple components in device 400 are connected to I / O interface 405, including: input unit 406, such as keyboard, mouse, etc.; output unit 407, such as various types of monitors, speakers, etc.; storage unit 408, such as disk, optical disk, etc.; and communication unit 409, such as network card, modem, wireless transceiver, etc. Communication unit 409 allows device 400 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0064] The computing unit 401 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 401 performs the various methods and processes described above, such as the amine liquid thermally stabilized salt removal method. For example, in some embodiments, the amine liquid thermally stabilized salt removal method can be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 408. In some embodiments, part or all of the computer program can be loaded and / or installed on device 400 via ROM 402 and / or communication unit 409. When the computer program is loaded into RAM 403 and executed by the computing unit 401, one or more steps of the methods described above can be performed. Alternatively, in other embodiments, the computing unit 401 may be configured to perform the aforementioned amine liquid thermally stabilized salt removal method by any other suitable means (e.g., by means of firmware).

[0065] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0066] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0067] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0068] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0069] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0070] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service system that addresses the shortcomings of traditional physical hosts and VPS (Virtual Private Server) services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0071] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0072] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0073] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method for removing amine liquid heat-stabilized salts, characterized in that, include: Pretreatment of amine solutions containing heat-stable salts; The pretreated amine solution is fed into a segmented electrodialysis device, and desalination is performed in stages by different operating conditions in the front and back sections. In particular, osmotic pressure balancing control is performed on the concentration side to suppress the accompanying migration of amine, and periodic electrode reversal operation is used to weaken the polarization effect. The concentrate is crystallized, and after the solid salts are separated, the mother liquor is returned to the osmotic pressure balancing circuit for recycling.

2. The method according to claim 1, characterized in that, The step of passing the pretreated amine solution into a segmented electrodialysis device and performing graded desalination through differentiated operating conditions between the front and rear stages includes: An inert isotonic salt solution is introduced into the concentration side, and the osmotic pressure difference between the concentration side and the desalination side is controlled to not exceed a preset threshold.

3. The method according to claim 2, characterized in that, The inert isotonic salt solution is a sodium sulfate solution or a potassium sulfate solution.

4. The method according to claim 1, characterized in that, The step of passing the pretreated amine solution into a segmented electrodialysis device and performing graded desalination through differentiated operating conditions between the front and rear stages includes: Electrode polarity reversal is performed at a preset period; wherein the current density of the reversal segment does not exceed a preset ratio of the forward current density, so as to reduce film surface polarization and boundary layer enrichment.

5. The method according to claim 1, characterized in that, The process of crystallizing the concentrate, separating the solid salts, and then recycling the mother liquor back to the osmotic pressure balancing circuit includes: In the first crystallization stage, supersaturation is controlled and seed crystals are introduced to promote nucleation and growth. In the second crystallization stage, low-shear aging is performed to separate solid salts.

6. The method according to claim 1, characterized in that, The method further includes: With the outlet thermally stable salt concentration and unit energy consumption as control targets, and the pressure difference and voltage fluctuations constrained, adaptive optimization control is performed on the electrodialysis power supply, pump valves, and online cleaning.

7. A device for removing amine liquid heat-stabilized salts, characterized in that, include: A pretreatment unit is used to pretreat amine solutions containing heat-stable salts; The staged desalination unit is used to pass the pretreated amine solution into a staged electrodialysis device and perform staged desalination by different operating conditions between the front and back sections; wherein, osmotic pressure balancing control is performed on the concentration side to suppress the accompanying migration of amine, and periodic electrode reversal operation is used to weaken the polarization effect. The crystallization reflux unit is used to crystallize the concentrate, and after separating the solid salts, the mother liquor is refluxed back to the osmotic pressure balancing circuit for recycling.

8. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.

9. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-6.

10. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method according to any one of claims 1-6.

Images