Experimental device for simulating supercritical water gasification development well type

Abstract

The invention discloses a well type experimental device for simulating supercritical water gasification development. The experimental device comprises a plurality of outer cylinders, a plurality of gasification wells correspondingly arranged in the outer cylinders, a bracket and a collecting hopper, wherein a plurality of outer cylinders for placing experimental samples are arranged above the bracket; the bottom of the outer cylinder is connected with one end of a collecting hopper, and the collecting hopper is located below the support. Compared with the prior art, a flexible and controllable experimental platform is provided for research in the supercritical water gasification field, the mechanism and characteristics of gasification reaction can be deeply known, and beneficial data and insight are provided for related engineering and scientific research.

Description

Technical Field

[0001] The invention relates to the technical field of chemical engineering, in particular to a development well type experimental device simulating supercritical water gasification. Background Art

[0002] Supercritical water refers to water when the pressure is greater than 22.1MPa and the temperature is greater than 374℃. At this time, there is no difference between the liquid and gas of the water, and they are completely blended together. Supercritical water is extremely active. When organic matter is placed in supercritical water, the matter will be rapidly decomposed. It has a wide range of fusion capabilities, making supercritical water an ideal medium for the oxidation of organic matter. Its ultra-low viscosity coefficient is 3-5 orders of magnitude lower than that of water under normal temperature and pressure conditions. Therefore, the permeability coefficient of supercritical water in the water-containing medium and the movement speed in the pipeline are suddenly amplified, which can serve as a good diversion. Supercritical water gasification can be used to treat organic waste or mine coal, converting them into gas, liquid fuel or other valuable products while reducing environmental pollution.

[0003] Existing supercritical water gasification development wells suffer from low production efficiency, poor fluidity, and easy vapor escape. Existing supercritical water gasification experimental setups often lack effective methods to simulate the vapor escape around the sample and adjust boundary conditions. This results in discrepancies between the gasification process under real-world conditions and the experimental simulation. Consequently, adjustments and adaptations to different experimental requirements are difficult, potentially limiting research on gasification reactions under diverse conditions. Summary of the Invention

[0004] The purpose of the present invention is to provide a simulated supercritical water gasification development well type experimental device to solve the above technical problems.

[0005] To achieve the above object, the present invention provides a simulated supercritical water gasification development well type experimental device, the experimental device comprising: a plurality of outer cylinders, a plurality of gasification wells correspondingly arranged in the outer cylinders, a bracket, and a collection bucket;

[0006] Among them, a plurality of outer cylinders for placing experimental samples are arranged above the bracket; the bottom of the outer cylinder is connected to one end of the collecting bucket, and the collecting bucket is located below the bracket.

[0007] Technical effects and advantages of the present invention:

[0008] 1. Simulating gasification reactions under different conditions: The device features multiple outer cylinders, allowing samples with varying temperatures, catalysts, and particle sizes to be placed in supercritical water and observed for gasification. This provides a deeper understanding of the characteristics of the gasification process and provides important data for related research.

[0009] 2. Adjustable sample density: By adjusting the lifting and telescopic cylinder and the pressure plate, the density of the sample can be changed, affecting the gasification efficiency, which is helpful to study the effect of different sample densities on the gasification reaction.

[0010] 3. Adjustable boundary conditions: By adjusting the rotating cylinder, the vaporization conditions under different boundary conditions can be simulated. This allows researchers to more accurately explore the difficulty of water vapor escape around different samples, thereby better simulating the vaporization process in a real environment.

[0011] 4. Data collection and analysis: The device allows real-time monitoring of temperature, pressure, flow rate, and water vapor escaping from the sample, which is crucial for studying and analyzing the behavior and properties of supercritical water vaporization.

[0012] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Diagram of the structure of the well-type experimental device developed to simulate supercritical water gasification;

[0014] Figure 2 It is a structural schematic diagram of the inner section of the outer cylinder;

[0015] Figure 3 It is a structural diagram of the cross section of the outer cylinder;

[0016] Figure numerals: 1. bracket; 2. outer cylinder; 3. gasification well; 31. injection port; 32. partition; 33. solenoid valve; 4. pressure plate; 5. lifting frame; 6. inner cylinder; 7. collecting bucket; 8. air outlet; 9. rotating cylinder; 10. rotating telescopic cylinder; 11. lifting telescopic cylinder. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology, and are not used to limit the conditions for implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0019] The following combination Figure 1 An experimental device for simulating supercritical water gasification development well type is introduced. The experimental device includes: multiple outer cylinders 2, multiple gasification wells 3 arranged in the outer cylinders 2, a bracket 1, and a collection bucket 7.

[0020] A plurality of outer cylinders 2 for placing experimental samples are provided above the support 1, and a plurality of gasification wells 3 are correspondingly provided in the outer cylinders 2. Preferably, the support 1 is fixed with a plurality of outer cylinders 2, and each outer cylinder 2 has a gasification well 3 fixed therein.

[0021] The gasification well 3 includes: a plurality of vent holes penetrating the inner and outer walls of the gasification well 3 , and an injection port 31 disposed above the gasification well 3 , wherein the injection port is used to inject supercritical water.

[0022] Among them, an experimental sample is placed in each outer cylinder 2. By injecting supercritical water into the gasification well 3, the supercritical water overflows from the vent and reacts with the sample in the outer cylinder 2. In this way, the gasification conditions of different groups of samples can be tested, such as the gasification conditions of samples in supercritical water under different temperatures, different catalysts and different particle sizes.

[0023] Wherein, the gasification well 3 further comprises: a partition 32, such as Figure 2 Specifically, a liftable partition 32 is provided at the center of the gasification well 3. The partition 32 can separate the gasification well 3 into two semi-cylindrical spaces. The injection port 31 is provided in one of the semi-cylindrical spaces. The other semi-cylindrical space of the gasification well 3 is provided with a solenoid valve 33. The solenoid valve 33 is connected to an external gas collection device. By measuring the combustible gas collected in the gas collection device, the extraction efficiency of the test group can be determined.

[0024] That is, the supercritical water injected into the vaporization well 3 from the injection port 31 bypasses the bottom of the partition 32 and flows upward under pressure toward the solenoid valve 33, allowing the supercritical water to circulate in the vaporization well 3, thereby maintaining the temperature of the supercritical water within a certain range. Furthermore, the pressure of the water vapor can be used to carry the combustible gas generated in the vaporization well 3 to the outside. Furthermore, by raising and lowering the partition 32, the height of the supercritical water's turning point can be adjusted. The lower the turning point, the greater the pressure of the supercritical water on the sample, which can improve the sample's vaporization efficiency, but will make it easier for the water vapor to escape to the surroundings. The higher the turning point, the less pressure the supercritical water exerts on the sample, but can improve the water vapor collection efficiency and maintain the supercritical water temperature within a higher range.

[0025] In addition, a monitoring device is also provided in the gasification well 3, and the monitoring device includes but is not limited to temperature, pressure, and flow sensors.

[0026] The experimental apparatus further includes an inner cylinder 6 disposed between the outer cylinder 2 and the gasification well 3. A certain gap exists between the outer cylinder 2 and the inner cylinder 6. The inner cylinder 6 has a sidewall with an exhaust port connected to the outer cylinder 2. When an experimental sample is placed in the inner cylinder 6 and reacts with supercritical water, the water vapor that escapes is discharged through the exhaust port into the outer cylinder 2.

[0027] The experimental device further includes: a rotating cylinder 9 provided between the outer cylinder 2 and the inner cylinder 6, and a discharge hole is also provided on the side wall of the rotating cylinder 9, which can overlap with the discharge hole of the inner cylinder 6. In other words, by rotating the rotating cylinder 9, the degree of overlap between the rotating cylinder 9 and the discharge hole of the inner cylinder 6 can be changed, thereby changing the difficulty of water vapor escaping from the surroundings of the sample, so as to simulate the boundary conditions of the sample, such as Figure 3 shown.

[0028] In addition, a rotating telescopic cylinder 10 is hinged between the rotating cylinder 9 and the outer cylinder 2. The rotating cylinder 10 can be driven to rotate.

[0029] The experimental device further includes: a liftable pressure plate 4 is provided in the inner tube 6 , and the pressure plate 4 can seal the cross section of the inner tube 6 .

[0030] The experimental device also includes a lifting frame 5 at the upper end of the bracket 1, which is movable by a lifting and telescopic cylinder 11. The lifting frame 5 is fixed to each pressing plate 4. When the sample is placed in the inner tube 6, the lifting and telescopic cylinder 11 drives the pressing plate 4 downward, so that the pressing plate 4 can press the sample tightly, thereby adjusting the sample's density.

[0031] The bottom of the outer tube 2 is connected to one end of a collection hopper 7, which is located below the bracket 1. The other end of the collection hopper 7 is an outlet 8 for collecting water vapor. In other words, the water vapor escaping from the surrounding area can be collected through the outlet 8, thereby obtaining data on the water vapor escaping from the sample.

[0032] The method of using the simulated supercritical water gasification development well experimental device is as follows:

[0033] Preparation: Before using the device, ensure that it has been correctly installed and calibrated, and check the status and connections of the gasification well, outer cylinder, inner cylinder, partition, pressure plate, lifting frame and other components.

[0034] Sample preparation: Place the experimental sample to be processed in the inner cylinder 6, which is located in the outer cylinder 2, with a certain gap between the two. This gap allows water vapor to escape from around the sample.

[0035] Set the partition: adjust the height of the partition 32 as needed. By raising and lowering the partition 32, the height of the turning point of the supercritical water can be changed, thereby adjusting the pressure on the sample. A lower turning point will increase the pressure and improve the sample vaporization efficiency, but water vapor is easy to escape; a higher turning point will reduce the pressure but help collect water vapor.

[0036] Sample density adjustment: If necessary, use the lifting and telescopic cylinder 11 to press the pressing plate 4 downward to adjust the density of the sample, which can affect the gasification efficiency of the sample.

[0037] Adjust the rotating cylinder: By rotating the telescopic cylinder 10 to drive the rotating cylinder 9 to rotate, the degree of overlap between it and the discharge hole of the inner cylinder 6 can be changed. This can adjust the difficulty of water vapor escaping from around the sample to simulate different boundary conditions. When the discharge holes of the rotating cylinder 9 and the inner cylinder 6 do not overlap, the escape of water vapor is maximally restricted, simulating a closed boundary condition. On the contrary, when the discharge holes of the rotating cylinder 9 and the inner cylinder 6 completely overlap, water vapor escapes more easily, simulating a relatively open boundary condition. According to research needs, this parameter can be adjusted to obtain the desired experimental results.

[0038] Injecting supercritical water: Supercritical water is injected into the gasification well 3 using the injection port 31 . The supercritical water overflows from the vent hole and reacts with the sample in the inner tube 6 .

[0039] Start the experiment: The solenoid valve 33 in the experimental device can control the flow and circulation of supercritical water to maintain a certain range of temperature conditions. The combustible gas generated by water vapor can be discharged into the gas collection device through the solenoid valve 33.

[0040] Data collection: During the experiment, monitoring devices were used to record parameters such as temperature, pressure, flow rate, and water vapor data collected from the outlet 8. These data were used for subsequent analysis and research.

[0041] End of the experiment: After the experiment is completed, shut down the experimental device, stop the injection and circulation of supercritical water, remove the experimental samples and conduct necessary analysis and evaluation.

[0042] The design of this experimental device allows researchers to simulate supercritical water vaporization reactions under different conditions, such as temperature, catalyst, and particle size. By adjusting the device parameters, relevant data can be obtained for in-depth study and analysis of the characteristics of supercritical water vaporization.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A well-type experimental device simulating supercritical water gasification, characterized in that: The experimental device comprises: a plurality of outer cylinders (2), a plurality of gasification wells (3) correspondingly arranged in the outer cylinders (2), a bracket (1), and a collection bucket (7); A plurality of outer cylinders (2) for placing experimental samples are arranged above the support (1); the bottom of the outer cylinder (2) is connected to one end of a collecting bucket (7), and the collecting bucket (7) is located below the support (1).

2. The device according to claim 1, characterized in that The gasification well (3) comprises: a plurality of vent holes penetrating the inner and outer walls of the gasification well (3), and an injection port (31) arranged above the gasification well (3); The injection port (31) is used to inject supercritical water.

3. The device according to claim 2, characterized in that The gasification well (3) further comprises: a partition (32) disposed inside the gasification well (3) and dividing the gasification well (3) into left and right semi-cylinders; Wherein, the partition (32) is a partition that can be raised and lowered.

4. The device according to claim 3, characterized in that The gasification well (3) further comprises: a solenoid valve (33); The electromagnetic valve (33) and the injection port (31) are respectively arranged above the left semi-cylinder and above the right semi-cylinder.

5. The device according to claim 1, characterized in that An inner cylinder (6) is provided between the outer cylinder (2) and the gasification well (3), and a discharge hole communicating with the outer cylinder (2) is provided on a side wall of the inner cylinder (6); A gap is provided between the outer cylinder (2) and the inner cylinder (6); the inner cylinder (6) is used for placing experimental samples.

6. The device according to claim 5, characterized in that The inner cylinder (6) comprises: a lifting and lowering pressing plate (4) arranged transversely in the inner cylinder (6); The pressing plate (4) is used to seal the cross section of the inner cylinder (6).

7. The device according to claim 6, characterized in that The experimental device further comprises: a lifting frame (5), a lifting and telescopic cylinder (11); The lifting frame (5) is connected to the pressing plate (4); the lifting frame (5) is arranged above the bracket (1) via a lifting and telescopic cylinder (11).

8. The device according to claim 6, characterized in that A rotating cylinder (9) is provided between the outer cylinder (2) and the inner cylinder (6); The side wall of the rotating cylinder (9) is provided with a discharge hole, which can overlap with the discharge hole of the inner cylinder (6).

9. The device according to claim 6, characterized in that A rotating telescopic cylinder (10) is hingedly connected at the upper connection point between the rotating cylinder (9) and the outer cylinder (2) to drive the rotating cylinder (9) to rotate.

10. The device according to claim 1, characterized in that The other end of the collecting hopper (7) is an air outlet (8) for collecting water vapor.

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