Device for testing adsorption capacity of activated carbon

Abstract

The utility model discloses a device for testing the adsorption capacity of activated carbon, which comprises a shell, a charging barrel and a pressure release valve, the charging barrel is accommodated in the shell, and the bottom of the charging barrel is provided with a through hole of which the aperture is smaller than the particle size of the activated carbon; the shell is internally provided with a cavity for accommodating water, the charging barrel is internally provided with a material cavity for accommodating activated carbon, and the through hole is communicated with the cavity and the material cavity; and the pressure release valve is communicated with the material cavity. According to the device for testing the adsorption capacity of the activated carbon, the pressure difference is realized in a positive pressure mode, meanwhile, the operation pressure is controlled through the pressure release valve, the field control is simpler and more convenient, the device integrates heating integration, the device is convenient to carry and transfer, and the operation convenience is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of activated carbon, and in particular relates to an integrated testing device suitable for the adsorption capacity of activated carbon. Background Art

[0002] Activated carbon, as one of the general adsorption media with excellent adsorption performance, is widely used in various industries of industrial production. During use, it will intercept and adsorb a large amount of chemical substances and gradually reduce its own adsorption capacity. When the adsorption capacity is reduced to a certain level, it needs to be replaced and regenerated.

[0003] The current mainstream regeneration method is thermal regeneration. This involves raising the ambient temperature under a protective atmosphere, causing the adsorbents in the activated carbon to escape due to heat. This is then incinerated at high temperatures, rendering the activated carbon completely harmless. After desorption, the adsorption properties of the activated carbon are restored. Testing of the adsorption capacity of the regenerated activated carbon is generally required.

[0004] Standard adsorption performance testing generally requires grinding the sample into powder and then undergoing adsorption and chemical titration to test accurate values. The test time is long, the process is complicated, and the professional expertise of the personnel is required.

[0005] The water capacity test is another standard test method for the adsorption performance of activated carbon. It measures the adsorption performance of activated carbon by testing its ability to adsorb water under high-temperature boiling water. For example, patent CN216386680U discloses a device for measuring the water capacity of coal-based granular activated carbon. However, it is essentially an improved vacuum device, and a pressure regulating valve is integrated into the negative pressure device to adjust the operating pressure during the filtration process; it requires an additional heating device to achieve heating. This test method dehydrates the activated carbon after adsorption by using a negative pressure timed filtration method. However, it involves many components, the standard instrument is difficult to use, and the degree of on-site adaptability is poor. If it is to be tested directly at the production site, a separate heating device and negative pressure device need to be configured. Utility Model Content

[0006] In view of this, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an improved testing device for the adsorption capacity of activated carbon, which can conveniently realize rapid, stable and accurate testing of the adsorption capacity of activated carbon.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A device for testing the adsorption capacity of activated carbon, comprising a shell, a barrel and a pressure relief valve. The barrel is accommodated in the shell, and a through hole with a pore size smaller than the activated carbon particle size is provided at the bottom of the barrel; the shell has a cavity for accommodating water, the barrel has a material chamber for accommodating activated carbon, the through hole connects the cavity and the material chamber; the pressure relief valve is connected to the material chamber.

[0009] According to some preferred implementation aspects of the present invention, the set pressure relief pressure of the pressure relief valve is 0.01±0.002Mpa.

[0010] According to some preferred implementation aspects of the present invention, the testing device includes a sealing cover for sealing the upper end of the barrel, and the sealing cover is provided with an air inlet for communicating with high-pressure gas, and the air inlet is connected to the material cavity.

[0011] According to some preferred embodiments of the present invention, the high-pressure gas has a pressure of 0.1-0.3 MPa and a temperature of no higher than 30°C. The high-pressure gas is compressed air, preferably the compressed air used on-site. Compressed air is a common supply for most manufacturing companies, making it more convenient to use and requiring no additional maintenance or supervision.

[0012] According to some preferred implementation aspects of the present invention, the bottom of the material chamber has filter cotton covering the through hole.

[0013] According to some preferred implementation aspects of the present invention, the diameter of the through holes is 0.5-3 mm, and the hole spacing is 1-5 mm.

[0014] According to some preferred implementation aspects of the present invention, a heating mechanism for heating is provided at the bottom of the cavity.

[0015] According to some preferred implementation aspects of the present invention, a drainage mechanism for draining water is provided at the bottom of the cavity, and the drainage mechanism remains open during the process of introducing high-pressure gas for further drainage.

[0016] According to some preferred embodiments of the present invention, the barrel and housing are detachably connected, facilitating the addition of the medium into the housing and the removal of the activated carbon. Furthermore, the barrel and housing are secured during pressurized drainage, ensuring safety during use and testing. The detachable connection is preferably a threaded connection or a snap-fit ​​connection.

[0017] According to some preferred embodiments of the present invention, the distance between the bottom of the barrel and the bottom of the housing is less than one-quarter of the height of the housing. This allows the activated carbon in the chamber to be properly positioned for better immersion in water while maintaining a certain distance from the heating mechanism to avoid adverse effects caused by excessive heating.

[0018] Compared with the existing technology, the benefits of the present invention are: the testing device for the activated carbon adsorption capacity of the present invention can achieve pressure difference through positive pressure, and at the same time control the operating pressure through the pressure relief valve, which makes on-site control simpler, and the device integrates heating, which is easy to carry and transfer, and the convenience of operation is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of an integrated testing device for the adsorption capacity of activated carbon in a preferred embodiment of the present utility model;

[0021] Among them, the figures are marked as: integrated testing device-1, shell-2, cavity-21, barrel-3, material cavity-31, sealing cover-4, air inlet-41, pressure relief valve-5, connecting pipe-6, heating mechanism-7, drainage mechanism-8, activated carbon-9. DETAILED DESCRIPTION

[0022] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 should fall within the scope of protection of the present invention.

[0023] Example Integrated testing device for activated carbon adsorption capacity 1

[0024] like Figure 1 As shown, the integrated testing device 1 for the adsorption capacity of activated carbon in this embodiment comprises a housing 2, a barrel 3, a sealing cap 4, and a pressure relief valve 5. The sealing cap 4 cooperates with the barrel 3 to seal the upper end of the barrel 3. The barrel 3 is housed within the housing 2. The bottom of the barrel 3 is provided with multiple through-holes (not shown) with a pore size smaller than the particle size of the activated carbon 9. The through-holes have a diameter of 0.5-3 mm and a pore spacing of 1-5 mm. In this embodiment, the preferred pore diameter is 2 mm and the pore spacing is 3 mm.

[0025] The housing 2 has a cavity 21 for containing a medium such as water, and the barrel 3 has a chamber 31 for containing the activated carbon 9. A through hole connects the cavity 21 and the chamber 31, allowing the medium such as water to flow between them. The bottom of the chamber 31 has a filter cotton covering the through hole.

[0026] The detachable connection between the barrel 3 and the housing 2 facilitates the addition of the medium to the housing 2 and the removal and placement of the activated carbon 9. It also secures the barrel 3 to the housing 2 during pressurized drainage, ensuring safety during use and testing. The detachable connection is preferably a threaded or snap-fit ​​connection. The medium is water, preferably with a water-to-activated carbon mass ratio of 10-20:1, so that the activated carbon 9 is completely submerged in the water. During heating, the sealing cap 4 is used to minimize evaporation and loss of water, eliminating the need for additional water replenishment. A threaded or snap-fit ​​connection can also be used between the sealing cap 4 and the barrel 3.

[0027] The bottom of cavity 21 is provided with a heating mechanism 7 and a drainage mechanism 8. Heating mechanism 7 is used to heat the medium, such as water, within cavity 21 and utilizes a heater such as a heating rod or heating tube. A power interface is provided on the side of the housing. Drain mechanism 8 is located on the bottom side of housing 2 opposite the power interface and is used to drain the medium, such as water, within cavity 21. Using a drain valve or other device, direct drainage is possible while the medium is still hot, simplifying pretreatment steps and improving efficiency. Drain mechanism 8 remains open during both the drainage process and the introduction of high-pressure gas.

[0028] In this embodiment, the bottom of the barrel 3 is lower than one-quarter of the height of the shell 2 from bottom to top, that is, the distance between the bottom of the barrel 3 and the bottom of the shell 2 is less than one-quarter of the height of the shell 2, so that the activated carbon 9 in the material cavity 31 is located in a suitable position, that is, it can be better immersed in water, and at the same time has a certain distance from the heating mechanism 7 to avoid the adverse effects caused by the excessive temperature of the heating mechanism 7.

[0029] The pressure relief valve 5 is connected to the material chamber 31 through the connecting pipe 6 to avoid excessive pressure in the material chamber 31, further ensuring the safety of the use and testing process. In this embodiment, the set pressure relief pressure of the pressure relief valve 5 is 0.01±0.002Mpa.

[0030] The top of the sealing cap 4 is provided with an air inlet 41 for communicating with the high-pressure gas. This inlet 41 is in communication with the material chamber 31. The activated carbon 9 in the material chamber 31 is pressurized by the air inlet 41 and the high-pressure gas until the pressure relief valve 5 opens, completing the treatment of the activated carbon 9. The high-pressure gas is the compressed air used on the production site, which is easy to access and requires no additional maintenance or supervision; the pressure is 0.1-0.3 MPa.

[0031] The integrated testing device 1 in this embodiment optimizes the steps in the standard testing process that require separate heating and cooling filtration, speeds up analysis efficiency, and realizes integrated testing operations; it can achieve pressure-controlled pressurization without the need for negative pressure extraction, is extremely safe and convenient for use on production sites, and improves convenience and safety of use.

[0032] The testing device for the activated carbon adsorption capacity of the present invention adopts a positive pressure pressurization method, and sets a safe pressure difference through a pressure relief valve, and automatically releases pressure when the fixed pressure is exceeded; different from the traditional negative pressure filtration method, the production site test needs to be equipped with a separate negative pressure device, and the high-pressure gas is a conventional supply, easy to obtain, and does not require additional maintenance and supervision, and cooperates with the pressure relief valve to achieve stable and accurate test results; at the same time, the traditional method is to use a split heating method of a beaker on an electric furnace, and the present invention realizes integrated heating by means of a built-in heating mechanism in the shell and the barrel, which is safer to operate and more convenient to use. The pressurization method can be integrated into the integrated heating and drainage system, and the negative pressure cannot achieve the above structure.

[0033] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for testing the adsorption capacity of activated carbon, characterized in that: The testing device includes a shell, a barrel and a pressure relief valve. The barrel is accommodated in the shell, and a through hole with a pore size smaller than the activated carbon particle size is opened at the bottom of the barrel; the shell has a cavity for accommodating water, and the barrel has a material cavity for accommodating activated carbon, and the through hole connects the cavity and the material cavity; the pressure relief valve is connected to the material cavity; the testing device includes a sealing cover for sealing the upper end of the barrel, and the sealing cover is provided with an air inlet for communicating with high-pressure gas, and the air inlet is connected to the material cavity; the bottom of the cavity is provided with a drainage mechanism for drainage; the drainage mechanism remains open during the process of introducing high-pressure gas for further drainage.

2. The testing device according to claim 1, wherein: The set relief pressure of the pressure relief valve is 0.01±0.002Mpa.

3. The testing device according to claim 1, wherein: The pressure of the high-pressure gas is 0.1-0.3 MPa.

4. The testing device according to claim 1, wherein: The bottom of the material cavity is provided with filter cotton covering the through hole.

5. The testing device according to claim 1 or 4, characterized in that: The through hole has a diameter of 0.5-3 mm.

6. The testing device according to claim 1, characterized in that The bottom of the cavity is provided with a heating mechanism for heating.

7. The testing device according to claim 1, characterized in that The barrel is detachably connected to the shell.

8. The testing device according to claim 1, wherein: The distance between the bottom of the barrel and the bottom of the shell is less than one quarter of the height of the shell.

Images