Device and method applied to diffusion visualization and diffusion efficiency evaluation of regenerant

Abstract

The invention discloses a device and method applied to diffusion visualization and diffusion efficiency evaluation of a regenerant, and the device comprises a transparent visual main body unit, a partition temperature control system, a detachable movable blocking assembly, a double-path independent gravity constant-pressure loading system and a visual observation assembly, a transparent housing base body is provided with a rectangular accommodation cavity with scales, and the rectangular accommodation cavity is divided into a first chamber and a second chamber; the two groups of independent loading assemblies are correspondingly arranged respectively; a transparent medium and a fluorescent direct reading scheme are adopted, the diffusion process of the regenerant is visually observed in real time, traditional slicing and CT scanning are replaced, the steps are simplified, the cost is reduced, and the test efficiency and the data traceability are improved; through gravity loading and piston follow-up compensation, a partition plate dissociation gap is automatically filled, and consistency of test conditions and true data are guaranteed; in combination with medium cooling and curing and the negative pressure coring cutter, in-situ lossless sampling is realized, the sample integrity is ensured, and the stratified analysis positioning precision is improved.

Description

A device and method for visualizing and evaluating the diffusion efficiency of regenerants. Technical Field

[0001] This invention relates to the field of road engineering testing and inspection technology, and in particular to a device and method for visualizing and evaluating the diffusion efficiency of regenerants. Background Technology

[0002] Recycling of asphalt pavement is a core technology under the "dual carbon" goal of the transportation industry. The penetration and diffusion capacity of recycling agents in aged asphalt directly determines the quality of recycling. However, existing methods for evaluating the diffusion of recycling agents have the following significant drawbacks: "black box" effect and destructive testing: Asphalt is a black and opaque substance, making it impossible to observe the internal diffusion path in real time. Existing technologies rely on extruding and slicing the entire specimen after the experiment, which is cumbersome and easily damages the sample structure; Gravity interference: In traditional longitudinal penetration experiments, the fluid's own weight can lead to an artificially high diffusion depth, failing to reflect pure concentration-driven diffusion; Unstable pressure control: Existing devices mostly use pneumatic or hydraulic pressurization, which is prone to pressure decay in long-term experiments. In addition, in baffle-extraction devices, air bubbles often remain at the contact interface due to the lack of a volume compensation mechanism; Difficult sampling and positioning: Sampling at high temperatures in liquid states can easily cause interlayer disturbances and makes it difficult to accurately locate the two-phase contact interface. Summary of the Invention

[0003] The technical problem to be solved by this invention is that existing asphalt diffusion tests suffer from problems such as lack of visibility, unstable pressure control, easy generation of bubbles at the contact interface, and difficulty in sampling.

[0004] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0005] On one hand, the present invention provides a device for visualizing and evaluating the diffusion efficiency of regenerant diffusion, comprising: a rectangular accommodating cavity with an open top extending horizontally inside the transparent shell substrate of a transparent visible main unit; a zoned temperature control system provided on the bottom outer surface of the rectangular accommodating cavity; a detachable movable barrier component installed on the inner wall of the middle part of the rectangular accommodating cavity; a dual-path independent gravity constant pressure loading system provided on the rectangular accommodating cavity; and a visualization observation component provided on one side of the transparent visible main unit.

[0006] The sidewall of the transparent shell substrate is provided with measuring scale lines along its length;

[0007] The rectangular receiving cavity is divided into a first chamber and a second chamber by a detachable movable barrier component (200). The dual-path independent gravity constant pressure loading system includes two sets of independent loading components, which are respectively arranged above the first chamber and the second chamber.

[0008] The use of transparent media and direct fluorescence reading scheme replaces traditional slide tests and CT scans, enabling real-time observation of the diffusion process, simplifying testing procedures and reducing equipment costs.

[0009] The rectangular receiving cavity has a U-shaped guide sealing groove on its inner wall. The movable barrier component is slidably inserted into the U-shaped guide sealing groove via the top opening in the vertical direction.

[0010] The loading components of the dual-path independent gravity constant pressure loading system include:

[0011] A voltage-stabilizing guide bracket is detachably fixed to the top outer edge of the transparent visible main body unit by bolts or clips, and the voltage-stabilizing guide bracket is provided with a vertical guide hole;

[0012] A solid sealing piston is slidably sealed at the top opening of the first or second chamber;

[0013] The force transmission guide rod is connected to the solid sealed piston at its lower end and passes through the vertical guide hole at its upper end.

[0014] The loading tray is horizontally fixed to the top of the force transmission guide rod;

[0015] A standard counterweight assembly is placed on the loading tray.

[0016] The solid sealed piston moves vertically under the influence of gravity as the liquid level changes.

[0017] By utilizing gravity loading and piston follow-up compensation mechanism, the gap after the partition is removed is automatically filled, preventing the generation of bubbles and maintaining pressure stability throughout the experiment.

[0018] The visualization observation component includes an ultraviolet excitation light source, used to illuminate the fluid within the containment cavity and assist in manually reading the diffusion distance.

[0019] The device for visualizing and evaluating the diffusion efficiency of regenerants also includes a post-experiment positioning and sampling component, comprising:

[0020] The positioning guide template is attached to the top opening of the transparent shell base after the dual-path independent gravity constant pressure loading system is removed. The center is provided with a sampling guide hole aligned with the position of the U-shaped guide sealing groove.

[0021] A tubular core extractor is inserted into the sampling guide hole to vertically cut into the condensed fluid medium and extract a cylindrical mixed sample using the principle of negative pressure adsorption. The top of the tubular core extractor is provided with a negative pressure locking air hole, and the bottom cutting edge adopts an inward tapered design.

[0022] The push rod, which is slidably fitted inside the tubular core extractor, is used to push out the extracted cylindrical sample completely.

[0023] By combining medium cooling and solidification with a negative pressure core extractor, in-situ non-destructive extraction after the experiment was achieved, ensuring the integrity of the sample and the positioning accuracy of the stratified analysis.

[0024] The positioning guide template has an inverted U-shaped structure. The inner width of the positioning guide template matches the outer width of the transparent shell base. The positioning guide template is restricted from displacement perpendicular to the length of the groove by limiting the folded edges on both sides.

[0025] The U-shaped guide sealing groove is embedded with a high-temperature resistant elastic sealing strip; the natural opening width of the elastic sealing strip is smaller than the thickness of the movable barrier component to form an interference fit seal.

[0026] The scale of the measurement line is located at the center line of the U-shaped guide sealing groove.

[0027] In another aspect, the present invention also provides a method for visualizing and evaluating the diffusion efficiency of regenerants, comprising:

[0028] When the active barrier component is in the inserted state, the test regenerant containing a fluorescent tracer is injected into the first chamber, and the transparent asphalt simulation medium is injected into the second chamber;

[0029] Turn on the zoned temperature control system and place the standard counterweight group on the loading tray according to the preset pressure;

[0030] The movable barrier assembly is pulled out vertically; the solid sealing pistons on both sides descend under the action of gravity, causing the rejuvenator to come into contact with the transparent asphalt simulation medium in the horizontal direction;

[0031] Turn on the ultraviolet excitation light source, observe the fluorescence area through the side wall of the transparent shell substrate, and read the diffusion distance at different times according to the measurement scale;

[0032] After the experiment, the dual-path independent gravity constant pressure loading system was removed. After the medium cooled and solidified, the post-experiment positioning and sampling component was installed to extract samples for analysis.

[0033] The process of installing the sampling component after the experiment to extract samples for analysis includes:

[0034] The tubular core cutter is inserted into the condensed medium via the positioning guide template until it reaches the bottom of the tank.

[0035] The negative pressure locking air hole at the top of the closed tubular core extractor is used to extract the core extractor to obtain a cylindrical sample.

[0036] The sample is pushed out using the push rod and sliced, and the characteristic functional group index of each slice is determined by infrared spectroscopy.

[0037] The beneficial effects achieved by this invention are as follows:

[0038] This invention achieves real-time and intuitive observation of the asphalt diffusion process by using a transparent medium and a direct fluorescence reading scheme, simplifying testing steps, significantly reducing equipment and testing costs, and improving test efficiency and data traceability; by utilizing gravity loading and piston follow-up compensation mechanism, it automatically fills the gap after the partition is removed, ensuring the consistency of test conditions and the authenticity of data;

[0039] By combining medium cooling and solidification with a negative pressure core extractor, in-situ non-destructive sampling can be achieved after the experiment, ensuring the integrity of the sample structure and improving the positioning accuracy of stratified analysis. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is a schematic diagram of the overall structure of the device for visualizing and evaluating the diffusion efficiency of regenerants, as shown in Embodiment 1 of the present invention.

[0042] Figure 2 is a partial detail view of the U-shaped guide sealing groove and the movable partition plate as shown in Embodiment 1 of the present invention;

[0043] Figure 3 is a schematic diagram of the dual-path independent gravity constant pressure loading system shown in Embodiment 1 of the present invention;

[0044] Figure 4 is a schematic diagram of the post-experiment positioning and sampling component shown in Embodiment 1 of the present invention;

[0045] Figure 5 is a schematic diagram of the installation of the post-experiment positioning and sampling component and the transparent shell substrate as shown in Embodiment 1 of the present invention.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100-Transparent visible main unit; 101-Transparent shell substrate; 102-First chamber; 103-Second chamber; 104-U-shaped guide sealing groove; 105-Precision measurement scale line; 200-Modible barrier component; 300-Dual independent gravity constant pressure loading system; 301-Pressure stabilizing guide bracket; 302-Solid sealed piston; 303-Force transmission guide rod; 304-Loading tray; 305-Standard counterweight block group; 400-Zoned temperature control system; 500-Visual observation component; 501-Ultraviolet excitation light source; 600-Post-experiment positioning and sampling component; 601-Positioning guide template; 602-Tube-shaped core extractor; 603-Push rod. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0049] Example 1:

[0050] As shown in Figure 1, this embodiment introduces a device for visualizing regenerant diffusion and evaluating diffusion efficiency, including:

[0051] The transparent shell base 101 of the transparent visible main unit 100 has a rectangular accommodating cavity with an open top extending horizontally inside. The bottom outer surface of the rectangular accommodating cavity is provided with a zoned temperature control system 400. A detachable movable barrier component 200 is installed on the inner wall of the middle part of the rectangular accommodating cavity. A dual-path independent gravity constant pressure loading system 300 is provided on the rectangular accommodating cavity. A visualization observation component 500 is provided on one side of the transparent visible main unit 100.

[0052] The sidewall of the transparent shell substrate 101 is provided with measuring scale lines 105 along the length direction;

[0053] The rectangular receiving cavity is divided into a first chamber 102 and a second chamber 103 by a detachable movable barrier assembly (200). The dual-path independent gravity constant pressure loading system 300 includes two sets of independent loading assemblies, which are respectively located above the first chamber 102 and the second chamber 103.

[0054] Specifically, the top of the transparent housing base 101 is an open structure without a fixed top cover. The movable barrier assembly 200 and the subsequent solid sealed piston 302 are both installed or removed vertically through this top opening. At the same time, the zoned temperature control system 400 is tightly fitted to the outer surface of the bottom wall of the transparent housing base 101, and heat is conducted through the glass bottom wall to the chamber, avoiding direct contact between the heating element and the fluid.

[0055] As shown in Figure 2, a U-shaped guide sealing groove 104 is provided on the inner wall of the middle part of the rectangular receiving cavity. The movable blocking component 200 is slidably inserted into the U-shaped guide sealing groove 104 through the top opening in the vertical direction.

[0056] As shown in Figure 3, the loading components of the dual-path independent gravity constant pressure loading system 300 include:

[0057] The voltage stabilizing guide bracket 301 is detachably fixed to the top outer edge of the transparent visible main body unit 100 by bolts or clips, and the voltage stabilizing guide bracket 301 is provided with a vertical guide hole;

[0058] A solid-sealed piston 302 is slidably sealed at the top opening of the first chamber 102 or the second chamber 103;

[0059] The force transmission guide rod 303 is connected to the solid sealed piston 302 at its lower end and passes through the vertical guide hole at its upper end.

[0060] The loading tray 304 is horizontally fixed to the top of the force transmission guide rod 303;

[0061] The standard counterweight assembly 305 is placed on the loading tray 304.

[0062] The solid-sealed piston 302 moves vertically under the influence of gravity as the liquid level changes.

[0063] The visualization observation component 500 includes an ultraviolet excitation source 501, which is used to illuminate the fluid in the containment cavity and assist in manually reading the diffusion distance.

[0064] As shown in Figures 4 and 5, the device for visualizing and evaluating the diffusion efficiency of regenerants also includes a post-experiment positioning and sampling component 600, comprising:

[0065] The positioning guide template 601 is fastened to the top opening of the transparent shell base 101 after the dual-path independent gravity constant pressure loading system 300 is removed. The center is provided with a sampling guide hole aligned with the position of the U-shaped guide sealing groove 104.

[0066] The tubular core extractor 602 is inserted into the sampling guide hole to vertically cut into the condensed fluid medium and extract cylindrical mixed samples using the principle of negative pressure adsorption. The top of the tubular core extractor 602 is equipped with a negative pressure locking air hole, and the bottom cutting edge adopts an inward tapered design.

[0067] The push rod 603 is slidably fitted inside the tubular core extractor 602 and is used to push out the extracted cylindrical sample completely.

[0068] The positioning guide template 601 has an inverted U-shaped structure. The inner width of the positioning guide template 601 matches the outer width of the transparent shell base 101. The positioning guide template 601 is restricted from displacement perpendicular to the length of the groove by the limiting folded edges on both sides.

[0069] The U-shaped guide sealing groove 104 is embedded with a high-temperature resistant elastic sealing strip; the natural opening width of the elastic sealing strip is less than the thickness of the movable barrier component 200 to form an interference fit seal.

[0070] The 0 mark of the measuring scale line 105 is located at the center line of the U-shaped guide sealing groove 104.

[0071] Specifically, the transparent and visible main unit 100 is made of high-temperature resistant borosilicate glass, and its sidewalls are engraved with precision measurement scale lines 105 with a graduation value of 1 mm. A U-shaped guide sealing groove 104 is provided in the middle of the receiving cavity, and a fluororubber sealing strip is embedded in the groove.

[0072] Specifically, the dual-path independent gravity constant pressure loading system 300 includes a pressure-stabilizing guide bracket 301 spanning above the main body. The pressure-stabilizing guide bracket 301 is detachably fixed to the upper or outer side of the transparent, visible main body unit 100 by bolts or clips. This detachable design facilitates open-air venting installation of the solid-sealed piston 302 during the experimental preparation phase. The solid-sealed piston 302, connected by the force-transmitting guide rod 303, bears the weight of the upper standard counterweight assembly 305.

[0073] This design allows the pistons 302 on both sides to automatically descend using gravitational potential energy when the movable barrier component 200 is pulled out, forcing the fluid to quickly fill the 5mm gap and preventing the formation of air bubbles.

[0074] Specifically, after the experiment is completed and the medium has cooled down, the gravity constant pressure loading system 300 is removed as a whole. Then, the positioning guide template 601 is fastened to the top of the transparent shell base 101 in an inverted U-shape. The limiting wing plates extending downward on both sides cover the outer wall of the shell, restricting its displacement in the direction perpendicular to the length of the tank to ensure that the sampling hole is aligned. At the same time, it is allowed to slide along the length of the tank. With the alignment mark on the side of the template aligned with the 0 scale line on the side wall of the shell, the longitudinal positioning of the sampling position is accurately achieved.

[0075] Specifically, the tubular core extractor 602 has a negative pressure locking vent at its tip. In use, first insert the medium, then press and hold the vent and lift.

[0076] This setup utilizes atmospheric pressure to seal the sample inside the tube, preventing it from slipping during extraction. It is particularly suitable for sampling semi-solid asphalt-like materials.

[0077] Example 2:

[0078] This embodiment introduces a method for visualizing regenerant diffusion and evaluating diffusion efficiency, including:

[0079] When the active barrier component 200 is in the inserted state, the test regenerant containing a fluorescent tracer is injected into the first chamber 102, and the transparent asphalt simulation medium is injected into the second chamber 103.

[0080] Turn on the zoned temperature control system 400 and place the standard counterweight block group 305 on the loading tray 304 according to the preset pressure;

[0081] The movable barrier component 200 is pulled out vertically; the solid sealing pistons 302 on both sides descend under the action of gravity, so that the recycling agent comes into contact with the transparent asphalt simulation medium in the horizontal direction.

[0082] Turn on the ultraviolet excitation source 501, observe the fluorescence area through the side wall of the transparent shell substrate 101, and read the diffusion distance at different times according to the measurement scale line 105;

[0083] After the experiment, the dual-path independent gravity constant pressure loading system 300 was removed. After the medium cooled and solidified, the post-experiment positioning sampling component 600 was installed to extract samples for analysis.

[0084] After installation and testing, the positioning and sampling component 600 extracts samples for analysis, including:

[0085] The tubular core cutter 602 is inserted into the condensed medium via the positioning guide template 601 until it reaches the bottom of the tank;

[0086] The negative pressure at the tip of the closed tubular core extractor 602 is used to lock the air hole, and the core extractor is used to obtain a cylindrical sample.

[0087] The sample was pushed out using the push rod 603 and sliced. The characteristic functional group index of each slice was determined by infrared spectroscopy.

[0088] Specifically, the testing method of this embodiment is as follows:

[0089] Step 1: Prepare transparent asphalt medium and inject it into the second chamber 103; inject a regenerator containing fluorescent agent into the first chamber 102.

[0090] Step 2: Place the counterweight and turn on the heating device;

[0091] Step 3: Pull out the partition at a constant speed and observe the piston descend slightly until the interface closes;

[0092] Step 4: Turn on the UV lamp and read the fluorescence diffusion distance directly through the side wall;

[0093] Step 5: Cool to 40℃, extract the sample using a core extractor, and slice it for analysis.

[0094] The above method can simultaneously obtain the macroscopic diffusion rate curve (Lt relationship) and the microscopic concentration gradient distribution, enabling a comprehensive evaluation of the regenerant diffusion efficiency.

[0095] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for 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 application.

[0096] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0097] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for visualizing and evaluating the diffusion efficiency of regenerants, characterized in that, include: The transparent shell base (101) of the transparent visible main unit (100) has a rectangular cavity with an open top extending horizontally inside. The bottom outer surface of the rectangular cavity is provided with a zoned temperature control system (400). A detachable movable barrier component (200) is installed on the inner wall of the middle part of the rectangular cavity. A dual-path independent gravity constant pressure loading system (300) is provided on the rectangular cavity. A visualization observation component (500) is provided on one side of the transparent visible main unit (100). The side wall of the transparent shell base (101) is provided with a measurement scale line (105) along the length direction. The rectangular cavity is divided into a first chamber (102) and a second chamber (103) by the detachable movable barrier component (200). The dual-path independent gravity constant pressure loading system (300) includes two sets of independent loading components, which are respectively set above the first chamber (102) and the second chamber (103).

2. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 1, characterized in that, The rectangular cavity has a U-shaped guide sealing groove (104) on its inner wall. The movable barrier component (200) is slidably inserted into the U-shaped guide sealing groove (104) through the top opening in the vertical direction.

3. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 1, characterized in that, The loading components of the dual-path independent gravity constant pressure loading system (300) include: a pressure-stabilizing guide bracket (301), which is detachably fixed to the top outer edge of the transparent visible main body unit (100) by bolts or buckles, and the pressure-stabilizing guide bracket (301) is provided with a vertical guide hole; a solid sealing piston (302), which is slidably sealed to the top opening of the first chamber (102) or the second chamber (103); a force transmission guide rod (303), the lower end of which is connected to the solid sealing piston (302), and the upper end of which passes through the vertical guide hole; a loading tray (304), which is horizontally fixed to the top of the force transmission guide rod (303); and a standard counterweight block group (305), which is placed on the loading tray (304).

4. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 3, characterized in that, The solid sealed piston (302) moves vertically under the influence of gravity as the liquid level changes.

5. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 1, characterized in that, The visualization observation component (500) includes an ultraviolet excitation source (501) for illuminating the fluid within the containment cavity and assisting in the manual reading of the diffusion distance.

6. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 1, characterized in that, It also includes a post-experiment positioning and sampling component (600), comprising: a positioning guide template (601), which, after the removal of the dual-path independent gravity constant pressure loading system (300), is fastened to the top opening of the transparent shell substrate (101), and has a sampling guide hole in the center aligned with the position of the U-shaped guide sealing groove (104); a tubular core extractor (602), which is inserted into the sampling guide hole for vertically cutting into the condensed fluid medium and extracting a cylindrical mixed sample using the principle of negative pressure adsorption; the top grip of the tubular core extractor (602) is provided with a negative pressure locking air hole, and the bottom cutting edge adopts an inward tapered design; and a push rod (603), which is slidably fitted inside the tubular core extractor (602) for completely pushing out the extracted cylindrical sample.

7. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 6, characterized in that, The positioning guide template (601) has an inverted U-shaped structure. The inner width of the positioning guide template (601) matches the outer width of the transparent shell base (101). The positioning guide template (601) is restricted from displacement perpendicular to the length of the groove by the limiting folded edges on both sides.

8. The device for visualizing and evaluating the diffusion efficiency of regenerants according to claim 1, characterized in that, The U-shaped guide sealing groove (104) is embedded with a high-temperature resistant elastic sealing strip; the natural opening width of the elastic sealing strip is less than the thickness of the movable barrier component (200) to form an interference fit seal; the 0 mark of the measuring scale line (105) is located at the center line of the U-shaped guide sealing groove (104).

9. A method for visualizing and evaluating the diffusion efficiency of regenerants, characterized in that, include: When the active barrier component (200) is in the inserted state, inject the test regenerator containing a fluorescent tracer into the first chamber (102) and inject the transparent asphalt simulation medium into the second chamber (103); turn on the partition temperature control system (400) and place the standard counterweight block group (305) on the loading tray (304) according to the preset pressure; pull out the active barrier component (200) in the vertical direction; the solid sealing pistons (302) on both sides descend under the action of gravity, so that the regenerator and the transparent asphalt simulation medium come into contact in the horizontal direction; turn on the ultraviolet excitation light source (501), observe the fluorescence area through the side wall of the transparent shell substrate (101), and read the diffusion distance at different times according to the measurement scale line (105); after the experiment, remove the dual independent gravity constant pressure loading system (300), and after the medium cools and solidifies, install the post-experiment positioning sampling component (600) to extract samples for analysis.

10. The method for visualizing and evaluating the diffusion efficiency of regenerants according to claim 9, characterized in that, The process of extracting and analyzing samples after installation of the experimental positioning and sampling component (600) includes: inserting the tubular core extractor (602) into the condensed medium through the positioning guide template (601) until the bottom of the tank; closing the negative pressure locking vent at the top of the tubular core extractor (602) and extracting the core extractor to obtain a cylindrical sample; pushing out the sample using the push rod (603) and slicing it, and measuring the characteristic functional group index of each slice using an infrared spectrometer.

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