Automatic compounding and protonating system for desulfurization wastewater extraction dechlorination extractant

Abstract

The present application provides a kind of desulfurization wastewater extraction dechlorination extractant automatic compounding and protonation system, the system includes shell and irradiation component, the shell has cavity, irradiation component is located in cavity, irradiation component is used to separate into compounding cavity and protonation cavity with cavity, irradiation component includes terahertz component and irradiation cavity, irradiation cavity is connected with compounding cavity and protonation cavity, terahertz component is located in irradiation cavity, compounding cavity has main extractant import, modifier import and diluent import, protonation cavity has acid liquid import, main extractant, modifier and diluent are respectively added to compounding cavity to form compounding extractant with main extractant import, modifier import and diluent import.The desulfurization wastewater extraction dechlorination extractant automatic compounding and protonation system of the present application, degree of automation is high, and has the advantages of good running stability.

Description

Technical Field

[0001] This invention belongs to the field of advanced treatment technology for desulfurization wastewater, specifically relating to an automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant. Background Technology

[0002] In the "three-stage tank + extraction dechlorination" process for desulfurization wastewater in power plants, the extraction dechlorination stage often uses organic extractants (such as trioctylamine) to extract and remove chloride ions from the desulfurization wastewater. To optimize the extraction performance, it is usually necessary to modify and compound the main extractant, modifier (such as alcohols), and diluent (such as kerosene) in a specific ratio to form a highly efficient modified extractant suitable for the desulfurization wastewater quality.

[0003] In related technologies, extractant compounding and protonation are mostly independent processes, lacking integrated equipment. Moreover, the compounding equipment can only achieve basic mixing functions and lacks volatilization suppression design, which cannot meet the needs of long-term, safe and stable operation in power plant sites. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose an automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant, which has the advantages of high degree of automation and good operational stability.

[0006] The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractants according to embodiments of the present invention includes:

[0007] A housing having a cavity; An irradiation assembly is disposed within the cavity, dividing the cavity into a composite cavity and a protonation cavity. The irradiation assembly includes terahertz components and an irradiation cavity, the irradiation cavity connecting the composite cavity and the protonation cavity, and the terahertz components are disposed within the irradiation cavity. The compounding chamber has a main extractant inlet, a modifier inlet, and a diluent inlet. The protonation chamber has an acid inlet. The main extractant, modifier, and diluent are added to the compounding chamber through the main extractant inlet, the modifier inlet, and the diluent inlet, respectively, to form a compound extractant. The compound extractant flows to the protonation chamber after being irradiated by terahertz waves in the irradiation chamber. The compound extractant undergoes a protonation reaction in the protonation chamber and under acidic conditions.

[0008] The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractants of this invention integrates the three major functions of compounding, stabilization, and protonation—which originally required multiple independent tanks, reactors, and connecting pipelines—into a unified equipment framework, achieving a high degree of physical integration. The sealed shell structure fundamentally restricts the diffusion of internal organic materials (especially volatile alcohol modifiers) into the environment, realizing the physical basis for terahertz wave irradiation to suppress volatilization. This not only reduces material loss (improving economic efficiency) and lowers the concentration of combustible vapors on-site, but also enhances the safety of system operation.

[0009] In some embodiments, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant of the present invention further includes a stirring assembly, the stirring assembly including a first stirring element and a second stirring element, the first stirring element being disposed in the compounding chamber and the second stirring element being disposed in the protonation chamber.

[0010] In some embodiments, the main extractant inlet, the modifier inlet, and the diluent inlet are all located at the bottom of the compounding chamber and spaced apart from the first stirring member in the height direction of the shell, and the acid inlet is located at the bottom of the protonation chamber and spaced apart from the second stirring member in the height direction of the shell.

[0011] In some embodiments, the protonation chamber further has a liquid outlet located at the upper end of the protonation chamber.

[0012] In some embodiments, the irradiation assembly includes a first sidewall and a second sidewall defining an irradiation cavity between the first sidewall and the second sidewall. The first sidewall has a first outlet communicating between the compounding cavity and the irradiation cavity, and the second sidewall has a second outlet communicating between the compounding cavity and the protonation cavity.

[0013] In some embodiments, the terahertz component is located between the first flow port and the second flow port in the height direction of the housing.

[0014] In some embodiments, the first outlet is located at the upper end of the first sidewall, and the second outlet is located at the lower end of the second sidewall.

[0015] In some embodiments, the terahertz component includes a plurality of terahertz units, which are spaced apart along the height direction of the housing. Each terahertz unit includes a terahertz frame and a plurality of terahertz beads, which are spaced apart on the terahertz frame.

[0016] In some embodiments, there is an angle between the extending direction of the terahertz frame and the height direction of the frame.

[0017] In some embodiments, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant of the present invention further includes a dosing component. The dosing component includes a main extractant dosing device, a modifier dosing device, a diluent dosing device, and an acid dosing device. The housing also has a device cavity located below the cavity. The dosing component is disposed in the device cavity. The main extractant dosing device, the modifier dosing device, the diluent dosing device, and the acid dosing device are respectively connected to the main extractant inlet, the modifier inlet, the diluent inlet, and the acid inlet. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to an embodiment of the present invention.

[0019] Figure label: 1. Shell; 11. Compounding chamber; 111. Main extractant inlet; 112. Modifier inlet; 113. Diluent inlet; 12. Protonation chamber; 121. Acid inlet; 122. Liquid outlet; 13. Equipment chamber. 2. Irradiation assembly; 21. Irradiation cavity; 22. Terahertz component; 221. Terahertz frame; 222. Terahertz bead; 23. First sidewall; 231. First flow port; 24. Second sidewall; 241. Second flow port; 25. Terahertz source. 31. First agitator; 32. Second agitator; 41. Main extractant dosing device; 42. Modifier dosing device; 43. Diluent dosing device; 44. Acid dosing device. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] like Figure 1 As shown, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant in this embodiment of the invention includes: a shell 1 and an irradiation component 2.

[0022] The housing 1 has a cavity. The irradiation assembly 2 is disposed in the cavity and is used to divide the cavity into a compounding cavity 11 and a protonation cavity 12. The irradiation assembly 2 includes a terahertz element 22 and an irradiation cavity 21. The irradiation cavity 21 connects the compounding cavity 11 and the protonation cavity 12. The terahertz element 22 is disposed in the irradiation cavity 21. The compounding cavity 11 has a main extractant inlet 111, a modifier inlet 112, and a diluent inlet 113. The protonation cavity 12 has an acid inlet 121. The main extractant, modifier, and diluent are added to the compounding cavity 11 through the main extractant inlet 111, the modifier inlet 112, and the diluent inlet 113, respectively, to form a compound extractant. After being irradiated by terahertz waves in the irradiation cavity 21, the compound extractant flows to the protonation cavity 12. The compound extractant undergoes a protonation reaction in the protonation cavity 12 under acidic conditions.

[0023] Specifically, such as Figure 1 As shown, the housing 1 is the mounting carrier and containment structure for all other components. The housing 1 can provide a closed and safe container environment, creating the basic conditions for integrated processes, and can suppress the volatilization loss of internal agents (especially volatile modifiers such as alcohols) through design (such as materials and insulation), meeting the requirements for long-term, safe and stable operation.

[0024] The irradiation assembly 2 is fixedly installed inside the cavity, dividing the cavity into a compounding chamber 11 and a protonation chamber 12. That is, the left side of the irradiation assembly 2 is the compounding chamber 11, and the right side is the protonation chamber 12. The irradiation chamber 21 of the irradiation assembly 2 is located between the compounding chamber 11 and the protonation chamber 12, and the irradiation chamber 21 is connected to both the compounding chamber 11 and the protonation chamber 12.

[0025] The compounding chamber 11 has three independent inlets: main extractant inlet 111, modifier inlet 112, and diluent inlet 113. These inlets are connected via pipelines to external main extractant (e.g., trioctylamine), modifier (e.g., alcohols), and diluent (e.g., kerosene) storage tanks or metering supply systems, respectively. The protonation chamber 12 has an acid inlet 121, which is connected via pipeline to an external acid (e.g., dilute sulfuric acid) supply system. The compound extractant, after terahertz irradiation, flows from the irradiation chamber 21 into the protonation chamber 12.

[0026] Understandably, the main extractant, modifier, and diluent are mixed in the compounding chamber 11 to form a compound extractant. This compound extractant flows to the irradiation chamber 21, where it is irradiated with terahertz waves to suppress the volatilization of its organic molecules, thereby improving stability and ensuring that the compounding ratio remains balanced. After terahertz irradiation, the compound extractant flows to the protonation chamber 12. Acid is added through the acid inlet 121, and the compound extractant mixes with the acid, a process that protonates the compound extractant.

[0027] Therefore, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant of this invention integrates the three major functions of compounding, stabilization, and protonation—which originally required multiple independent tanks, reactors, and connecting pipelines—into a unified equipment framework, achieving a high degree of physical integration. The sealed shell structure fundamentally restricts the diffusion of internal organic materials (especially volatile alcohol modifiers) into the environment, realizing the physical basis for terahertz wave irradiation to suppress volatilization. This not only reduces material loss (improving economic efficiency) and lowers the concentration of combustible vapors on site, but also enhances the safety of system operation.

[0028] It should be noted that the reagents introduced into the compounding chamber 11 and the protonation chamber 12, as well as the terahertz wave frequency, power, and irradiation time, can all be uniformly controlled by the control system. For example, the dosage can be fed back in real time using a flow sensor to ensure the accuracy of automatic dosing into each chamber.

[0029] In some embodiments, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant of the present invention further includes a stirring assembly, which includes a first stirring element 31 and a second stirring element 32. The first stirring element 31 is disposed in the compounding chamber 11, and the second stirring element 32 is disposed in the protonation chamber 12.

[0030] Specifically, such as Figure 1 As shown, the first stirring element 31 (such as a stirring paddle) is installed inside the compounding chamber 11 and can be driven by a drive mechanism (such as a motor) located on the top surface of the housing 1. Similarly, the second stirring element 32 is installed in the protonation chamber 12 and can also be driven by its corresponding drive mechanism.

[0031] Understandably, after the three raw materials are added in proportion through the inlet, the first stirring element 31 is activated to force mechanical mixing, ensuring the formation of a homogeneous compound extractant. The compound extractant, after being activated by irradiation, flows into this chamber. After the acid solution is added through the acid inlet 121, the second stirring element 32 is activated to vigorously stir and mix, promoting full contact between the extractant and the acid solution to complete an efficient protonation reaction.

[0032] In other words, the first stirring element 31 provides an active and forced mechanical mixing force, which can quickly break down the interface between different components (especially the main extractant and diluent with different viscosities), achieving uniform mixing at both the macroscopic and microscopic levels. This surpasses the mixing method that relies solely on the diffusion of the fluid itself, ensuring that the material is highly homogeneous before entering the irradiation chamber 21. This creates optimal conditions for the uniform effect of subsequent terahertz irradiation, directly improving the initial quality and consistency of the compound extractant.

[0033] The second stirring element 32 can instantly and thoroughly mix the added acid solution with the flowing organic phase, greatly increasing the contact area between the two phases and avoiding stratification or incomplete local reactions. This ensures that the protonation reaction is rapid, efficient, and thorough, directly improving the activity and effectiveness of the final extractant.

[0034] In some embodiments, the main extractant inlet 111, the modifier inlet 112, and the diluent inlet 113 are all located at the bottom of the compounding chamber 11 and are aligned with the first stirring member 31 in the height direction of the shell 1 (e.g., ...). Figure 1 The acid inlet 121 is located at the bottom of the protonation chamber 12 and is spaced apart from the second stirring element 32 in the height direction of the shell 1.

[0035] Specifically, such as Figure 1 As shown, the main extractant, modifier, and diluent enter from the bottom, and the first stirrer 31 is located above these reagent inlets and at a certain distance from them. Therefore, after entering the compounding chamber 11, the reagents entering from the bottom must first diffuse upwards and be fully stirred in the stirring zone near the position of the first stirrer 31, ensuring that all reagents undergo a thorough mixing process.

[0036] Understandably, the layout of placing the reagent inlet at the bottom and the stirring mechanism at the top of the compounding chamber 11 facilitates the formation of a large-scale axial circulation flow from bottom to top within the chamber. The stirring component pushes the material from the top downwards, while the fresh material from the bottom is drawn into the upward flow, resulting in more thorough mixing and more uniform reagent mixing.

[0037] Similarly, acid (usually an aqueous phase, which may have a higher density than the organic phase) is also added to the protonation chamber 12 from the bottom. If the stirrer is also at the bottom, the acid may be confined to a localized area at the bottom, resulting in insufficient contact between the two phases. Therefore, by placing the second stirrer 32 at a higher position, the acid in the protonation chamber 12 can be mixed more evenly with the terahertz-irradiated compound extractant, resulting in a more complete protonation reaction.

[0038] In some embodiments, the protonation chamber 12 further has a liquid outlet 122, which is located at the upper end of the protonation chamber 12.

[0039] It is understandable that, such as Figure 1 As shown, the liquid outlet 122 is located at the upper end of the protonation chamber 12. When the liquid level in the protonation chamber 12 rises to the height of the liquid outlet 122 due to the continuous inflow of material, the extractant that has completed the reaction will automatically and continuously flow out.

[0040] In other words, the height of the outlet 122 fixes the effective working liquid level within the chamber, indirectly controlling the average residence time of the material in the protonation chamber 12. Residence time is a key process parameter ensuring the complete completion of the protonation reaction. By fixing the overflow level, the system automatically maintains a stable reaction time, eliminating the need for complex level or flow feedback control, simplifying operation, and ensuring consistent product quality.

[0041] In some embodiments, the irradiation assembly 2 includes a first sidewall 23 and a second sidewall 24, defining an irradiation cavity 21 between the first sidewall 23 and the second sidewall 24. The first sidewall 23 has a first outlet 231 communicating with the compounding cavity 11 and the irradiation cavity 21, and the second sidewall 24 has a second outlet 241 communicating with the compounding cavity 11 and the protonation cavity 12.

[0042] Specifically, such as Figure 1 As shown, the first sidewall 23 and the second sidewall 24 are both fixed and sealed to the inner wall of the housing 1 to prevent leakage or cross-flow of liquid in each chamber. There is a certain gap between the first sidewall 23 and the second sidewall 24, and this gap forms the irradiation cavity 21, in which the terahertz components 22 are fixedly installed.

[0043] Understandably, the compound extractant enters the irradiation chamber 21 from the compounding chamber 11 through the first flow port 231, receives terahertz irradiation within the chamber, and then flows out through the second flow port 241 into the protonation chamber 12. The size and shape of the first and second flow ports 241 can be specifically designed (e.g., narrow slits or a specific array) to control the fluid velocity and flow pattern entering the irradiation chamber 21, thereby preventing the formation of turbulent dead zones or excessively high flow rates that could lead to insufficient irradiation.

[0044] It should be noted that during operation, the feed pump of the compounding chamber 11 should be started first. After the compounding chamber 11 establishes a certain liquid level or pressure, the liquid outlet of the protonation chamber 12 should be opened (or the outlet 122 should be confirmed to be unobstructed) to ensure that the pressure gradient is correctly established from beginning to end. The system monitors the liquid level or pressure of the compounding chamber 11 and the protonation chamber 12. If an abnormal increase in pressure is detected in the protonation chamber 12 (possibly due to downstream blockage) or an abnormal decrease in pressure is detected in the compounding chamber 11 (feeding failure), the system should alarm and take protective measures (such as suspending feeding) to prevent gradient reversal. When shutting down, feeding into the compounding chamber 11 should be stopped first, and completely stopped only after the material in the system has been largely emptied to avoid reverse flow of residual liquid due to gravity or temperature difference.

[0045] In some embodiments, the terahertz component 22 is located between the first flow port 231 and the second flow port 241 in the height direction of the housing 1.

[0046] It is understandable that, such as Figure 1As shown, the first inlet 231 and the second outlet 241 are located at different heights in the vertical direction, and the terahertz component 22 is installed within this height range. Since the first inlet 231 and the second outlet 241 are the only channels for fluid to enter and exit the irradiation cavity 21, and the terahertz component 22 is located between them, any fluid flowing from the inlet to the outlet must pass through the energy field of the terahertz wave.

[0047] In other words, the energy of the terahertz waves is concentrated and released in the region between the two inlets, avoiding energy waste in ineffective regions before the inlet or after the outlet. Furthermore, the system can more accurately calculate and calibrate the energy density (power / volume) within this region, making the irradiation process a quantifiable and controllable process parameter.

[0048] In some embodiments, the first outlet 231 is located at the upper end of the first sidewall 23, and the second outlet 241 is located at the lower end of the second sidewall 24.

[0049] It is understandable that, such as Figure 1 As shown, depending on the positions of the first flow port 231 and the second flow port 241, the corresponding fluid flows from top to bottom within the irradiation chamber 21.

[0050] It should be noted that in the compounding chamber 11, the three raw materials—the main extractant, the modifier, and the diluent—enter the compounding chamber 11 from their respective bottom inlets. The first stirring element 31 is activated, and the raw materials are captured and vigorously mixed by the stirring element as they rise. The uniformly mixed compound extractant accumulates within the compounding chamber 11 and collects from its upper region.

[0051] The compound extractant flows out from the upper part of the compounding chamber 11 and enters the irradiation chamber 21 through the first flow port 231 located at the upper end of the first sidewall 23. The terahertz device 22 is installed in the middle of the flow channel, which can uniformly irradiate all the downward fluid. The irradiated material collects at the bottom of the irradiation chamber 21 and flows out through the second flow port 241 located at the lower end of the second sidewall 24.

[0052] The irradiated compound extractant flows out from the bottom of the irradiation chamber 21 and enters the protonation chamber 12, while acid is simultaneously added from the bottom inlet of the protonation chamber 12. The second stirrer 32 operates, rapidly drawing in and mixing the acid and extractant from the bottom, completing the protonation reaction within the chamber. The protonated extractant accumulates within the chamber, and when its level reaches the height of the outlet 122 at the upper end of the chamber, it is continuously discharged from the system in the form of overflow, entering subsequent use stages.

[0053] Therefore, the spatial misalignment design of the inlet, agitator, and outlet of each chamber is designed to create the optimal mixing flow field (circulation), processing flow field (downward push flow), or reaction flow field (strong shear mixing), which physically ensures the compounding accuracy, irradiation uniformity, and protonation efficiency.

[0054] In some embodiments, the terahertz component 22 includes a plurality of terahertz units, which are spaced apart along the height direction of the housing 1. Each terahertz unit includes a terahertz frame 221 and a plurality of terahertz beads 222, which are spaced apart on the terahertz frame 221.

[0055] Specifically, such as Figure 1 As shown, multiple terahertz units are arranged sequentially along the vertical direction (i.e., the direction of fluid flow from top to bottom), forming a multi-layered radiation layer. The terahertz frame 221 serves a supporting and fixing function, ensuring the precise positioning of the terahertz beads 222 in space. It may also act as a waveguide or reflector, guiding the propagation direction of the terahertz waves. The terahertz beads 222 are the core components for actually emitting or enhancing terahertz radiation. The bead-like structure has a high specific surface area, enabling efficient outward radiation of terahertz waves, and the spaced arrangement avoids mutual shielding, forming a multi-point radiation source.

[0056] Understandably, the arrangement of multiple terahertz units along the vertical direction ensures that the fluid receives near-field or far-field terahertz wave irradiation at every height level as it flows downwards through the irradiation cavity 21. This solves the energy attenuation gradient problem that may exist with a single point or line radiation source (i.e., strong processing near the radiation source and weak processing further away). Furthermore, the multiple terahertz beads 222 on each unit form a multi-point radiation matrix within the horizontal cross-section, ensuring uniform coverage of the fluid radially (horizontally) and preventing the fluid from bypassing the radiation region within the irradiation cavity 21.

[0057] Preferably, the extension direction of the terahertz frame 221 has an angle with the height direction of the frame.

[0058] It is understandable that, such as Figure 1 As shown, when the extension direction of the terahertz frame 221 forms an angle with the height direction of the housing 1, the entire terahertz bead array 222 is tilted at an angle relative to the vertical direction. The angle can be an acute angle (e.g., 30°, 45°, etc. with respect to the vertical direction) or a vertical angle (e.g., with respect to the horizontal arrangement).

[0059] In other words, the tilted arrangement of the terahertz array 221 effectively extends the penetration path of the beam within the fluid. Simultaneously, the tilted illumination covers a larger fluid cross-section. These two effects together increase the contact area and depth of interaction between the fluid and terahertz energy per unit time, enhancing energy exchange efficiency. Furthermore, the interlacing of multiple tilted arrays allows their energy fields to interweave and superimpose in space, filling in any weak or blind zones that might exist in parallel arrays, resulting in a more uniform and diffuse spatial energy distribution.

[0060] In some embodiments, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant of the present invention further includes a dosing component, which includes a main extractant dosing device 41, a modifier dosing device 42, a diluent dosing device 43, and an acid dosing device 44. The housing 1 also has an equipment cavity 13, which is located below the cavity. The dosing component is disposed in the equipment cavity 13. The main extractant dosing device 41, the modifier dosing device 42, the diluent dosing device 43, and the acid dosing device 44 are respectively connected to the main extractant inlet 111, the modifier inlet 112, the diluent inlet 113, and the acid inlet 121.

[0061] Specifically, such as Figure 1 As shown, the equipment cavity 13 is located inside the main housing 1, specifically below the cavity (i.e., the working cavity that houses the compounding cavity 11, irradiation cavity 21, and protonation cavity 12), and is a space dedicated to installing auxiliary equipment. The dosing components (such as high-precision metering pumps, peristaltic pumps, or servo-driven plunger pumps) are the physical actuators for achieving automatic compounding and automatic protonation. These devices can accurately, stably, and programmably deliver liquids according to preset formula ratios (compounding accuracy ≤ ±0.5%) and process sequences, providing the core hardware guarantee for achieving the high compounding accuracy claimed by the system.

[0062] Understandably, installing the dosing components within the dedicated equipment cavity 13 beneath the main housing 1 means that all auxiliary equipment such as drive pumps, valves, and pipe joints are internally integrated and concealed. On-site users only need to connect the main extractant, modifier, diluent, and acid stock solution storage tanks to several main interfaces on the system housing. The complex internal distribution and metering are all handled by the built-in equipment cavity 13 components, resulting in a simple and compact overall system appearance.

[0063] Therefore, this highly integrated design greatly saves the space occupied by the equipment on site, reduces external connection points, lowers the risk of leakage, and is aesthetically pleasing and safe, making it very suitable for factories that require high space utilization and cleanliness.

[0064] Furthermore, the terahertz source 25 of the terahertz component 22 can also be installed within the equipment cavity 13. It is understood that the interior of the irradiation cavity 21 is a chemical process zone filled with organic extractants and potentially acidic environments, where corrosive vapors, high humidity, or temperature fluctuations may exist. Placing the delicate terahertz source 25, containing electronic circuitry and sensitive components, within the clean, dry, and controlled equipment cavity 13 below protects it from chemical corrosion and moisture.

[0065] The terahertz source 25 may generate heat during operation. Equipment cavity 13 can be specifically designed with more efficient heat dissipation channels (such as forced air cooling) and more stable temperature control. The irradiation cavity 21 above, however, primarily considers fluid handling, and its heat dissipation design objectives differ. Of course, the terahertz source 25, along with the dosing components, is located in equipment cavity 13, allowing all core drive components (pumps and electronic sources) to be concentrated in an easily accessible area (through a maintenance door). Technicians can inspect, calibrate, replace, or upgrade the terahertz source 25 without entering or disassembling the complex upper process cavity.

[0066] The automatic compounding and protonation system for desulfurization and dechlorination extractants for desulfurization wastewater extraction, based on the above embodiments, can test the stability of the extractant under terahertz wave irradiation. The detailed experimental process and data are as follows: Nine experimental groups were set up, consisting of one control group and eight experimental groups: Control group: After being compounded according to the preset ratio, no terahertz wave irradiation treatment was performed; Experimental group: After being compounded according to a preset ratio, it was treated with a terahertz wave irradiation stabilization chamber.

[0067] The compound extractant formula is as follows: the ratio of trioctylamine, isooctyl alcohol, and sulfonated kerosene is 6:3:1.

[0068] Terahertz wave irradiation time for control group: 0 min; Terahertz wave irradiation time for the experimental group: 5~40 min; Storage method: Store in a sealed container at 25℃; Terahertz wave frequency: 0.5THz; Component detection method: Gas chromatography-mass spectrometry (GC-MS). Detection frequency: Sampling and detection were carried out at 0h, 24h, 72h and 168h after the preparation of the compound extractant, and the content data of each component were recorded.

[0069] Nine 100g portions of extractant were prepared by mixing trioctylamine, isooctyl alcohol, and sulfonated kerosene in proportions of 60%, 30%, and 10%, respectively. The extractants were irradiated with terahertz waves for 0 min, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, and 40 min, respectively, and then sealed and stored at 25℃. The volatilization of each component was measured at 0 h, 24 h, 72 h, and 168 h, and the proportions of the three substances at each time point were calculated. The results are shown in Table 1 below. The volatilization of the three components at different irradiation times for 168 h is also shown in Table 1 below.

[0070] Table 1. Volatilization of the three components under different storage times and irradiation times.

[0071] The results showed that (1) the volatilization rate of each component in the composite extractant decreased with the increase of terahertz irradiation time and tended to stabilize after 30 min, that is, the optimal irradiation time of terahertz waves was 30 min. (2) In the composite extractant without terahertz irradiation, the volatilization rate of trioctylamine was 7.1%, the volatilization rate of isooctanol was 14.2%, and the volatilization rate of sulfonated kerosene was 15.9% after 168 h. In the composite extractant irradiated with terahertz waves, the volatilization rate of trioctylamine was 0.3%, the volatilization rate of isooctanol was 0.6%, and the volatilization rate of sulfonated kerosene was 0.6% after 168 h. Compared with the volatilization rate without irradiation, the volatilization rates decreased by 6.8%, 13.6%, and 15.3%, respectively, and the stability was significantly improved.

[0072] Therefore, the automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant of this invention can perform precise and automated compounding to improve the quality of the extractant; terahertz wave irradiation suppresses volatilization and enhances stability and safety; and integrates three major functions: compounding, stabilization and protonation, eliminating the need for a separate protonation process and storage equipment, simplifying the process and adapting it to the site.

[0073] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automated compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant, characterized in that, include: A housing having a cavity; An irradiation assembly is disposed within the cavity, dividing the cavity into a composite cavity and a protonation cavity. The irradiation assembly includes terahertz components and an irradiation cavity, the irradiation cavity connecting the composite cavity and the protonation cavity, and the terahertz components are disposed within the irradiation cavity. The compounding chamber has a main extractant inlet, a modifier inlet, and a diluent inlet. The protonation chamber has an acid inlet. The main extractant, modifier, and diluent are added to the compounding chamber through the main extractant inlet, the modifier inlet, and the diluent inlet, respectively, to form a compound extractant. The compound extractant flows to the protonation chamber after being irradiated by terahertz waves in the irradiation chamber. The compound extractant undergoes a protonation reaction in the protonation chamber and under acidic conditions.

2. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 1, characterized in that, It also includes a stirring assembly, which includes a first stirring element and a second stirring element, wherein the first stirring element is disposed in the compounding chamber and the second stirring element is disposed in the protonation chamber.

3. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 2, characterized in that, The main extractant inlet, the modifier inlet, and the diluent inlet are all located at the bottom of the compounding chamber and are spaced apart from the first stirring member in the height direction of the shell. The acid inlet is located at the bottom of the protonation chamber and is spaced apart from the second stirring member in the height direction of the shell.

4. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 3, characterized in that, The protonation chamber also has a liquid outlet, which is located at the upper end of the protonation chamber.

5. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 1, characterized in that, The irradiation assembly includes a first sidewall and a second sidewall, defining an irradiation cavity between the first sidewall and the second sidewall. The first sidewall has a first flow port connecting the compounding cavity and the irradiation cavity, and the second sidewall has a second flow port connecting the compounding cavity and the protonation cavity.

6. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 5, characterized in that, In the height direction of the housing, the terahertz component is located between the first flow port and the second flow port.

7. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 6, characterized in that, The first outlet is located at the upper end of the first sidewall, and the second outlet is located at the lower end of the second sidewall.

8. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 7, characterized in that, The terahertz component includes multiple terahertz units, which are spaced apart along the height direction of the housing. Each terahertz unit includes a terahertz frame and multiple terahertz beads, which are spaced apart on the terahertz frame.

9. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 8, characterized in that, The extension direction of the terahertz frame has an angle with the height direction of the frame.

10. The automatic compounding and protonation system for desulfurization wastewater extraction and dechlorination extractant according to claim 1, characterized in that, It also includes a dosing assembly, which includes a main extractant dosing device, a modifier dosing device, a diluent dosing device, and an acid dosing device. The housing also has a device cavity located below the cavity. The dosing assembly is disposed in the device cavity. The main extractant dosing device, the modifier dosing device, the diluent dosing device, and the acid dosing device are respectively connected to the main extractant inlet, the modifier inlet, the diluent inlet, and the acid inlet.

Images