Method and system for detecting carbon tetrachloride value of activated carbon

Abstract

The invention is applicable to the technical field of gas detection, and provides a method and a system for detecting the carbon tetrachloride value of activated carbon, the system comprises a pretreatment module, a temperature and flow control module, a carbon tetrachloride bubbling module, two infrared detection modules and an activated carbon adsorption module, and the acquisition module is used for acquiring the concentration data of the carbon tetrachloride gas in the mixed gas before and after entering the activated carbon adsorption module, obtaining the adsorption efficiency of the activated carbon and obtaining the carbon tetrachloride value of the activated carbon based on the adsorption efficiency. The method has the advantage that the characteristic absorption peak of the carbon tetrachloride in the infrared spectrum can be accurately captured. By acquiring the concentration change of the carbon tetrachloride gas before and after the carbon tetrachloride gas is adsorbed by the activated carbon sample, the instrument can efficiently and accurately characterize the CTC value of the activated carbon. Compared with a traditional national standard weighing method, the method provided by the system has the advantages that the detection efficiency is remarkably improved, the operation process is simplified, and the measurement precision is improved.

Description

Technical Field

[0001] This invention belongs to the field of gas detection technology, and in particular relates to a method and system for detecting the carbon tetrachloride value of activated carbon. Background Technology

[0002] Volatile organic compounds (VOCs) are important precursors to fine particulate matter and ozone, causing air pollution and having serious negative impacts on the climate. Due to their large specific surface area, good adsorption performance, low energy consumption, and low cost, activated carbon is widely used for the treatment of VOCs in the atmosphere.

[0003] Characterizing the adsorption performance of activated carbon includes iodine value and carbon tetrachloride (CTC) adsorption rate. For granular activated carbon, the iodine value must be greater than or equal to 800 mg / g, and for honeycomb activated carbon, greater than or equal to 650 mg / g. The CTC adsorption rate must be greater than or equal to 60%. However, activated carbon performance monitoring technology faces challenges, such as long laboratory testing cycles and high costs, making it difficult to meet the needs of rapid decision-making. Environmental protection departments and enterprises need to quickly identify activated carbon failure and monitor adsorption efficiency in real time. Therefore, carbon tetrachloride adsorption activity testing equipment plays a crucial role in key areas such as environmental enforcement and industrial emission monitoring, providing activated carbon manufacturers and environmental governance service providers with a scientific and efficient testing method.

[0004] Current research on CTC value detection for activated carbon is limited. Traditional CTC detection methods, such as the gravimetric method used in patent CN116858718A, require multiple weighings of the activated carbon test tube. This method suffers from poor accuracy, numerous steps, and is prone to introducing errors. Systems using the gravimetric method for activated carbon CTC value detection typically require at least two weighings of the test tube, followed by inputting the activated carbon information into the system for calculation, resulting in poor automation. Ambient humidity can cause positive deviations in mass measurement; furthermore, carbon tetrachloride is prone to volatilization and dissipation during weighing, leading to negative deviations in adsorption capacity detection. In summary, existing detection systems have significant errors, complex procedures, and are difficult to automate. Summary of the Invention

[0005] The purpose of this application is to provide a system for detecting the carbon tetrachloride value of activated carbon, which aims to solve the problems of large errors, complex detection processes, and difficulty in achieving fully automated detection in existing detection systems.

[0006] This application provides a system for detecting the carbon tetrachloride value of activated carbon, the system comprising:

[0007] The system includes a pretreatment module, a temperature and flow control module, a carbon tetrachloride bubbling module, an infrared detection module, and an activated carbon adsorption module.

[0008] The pretreatment module is used to remove particulate matter and moisture from the input ambient air to obtain pretreated gas.

[0009] The temperature and flow control module is used to acquire the pre-treated gas, control the gas flow rate of the pre-treated gas, and perform bidirectional temperature control to maintain the temperature stability of the output gas, thereby obtaining a constant temperature gas.

[0010] The carbon tetrachloride bubbling module is used to disperse the constant-temperature gas into a large number of small bubbles and pass them into liquid carbon tetrachloride to obtain a mixed gas of carbon tetrachloride vapor and constant-temperature gas.

[0011] At least two infrared detection modules are respectively set at the front and rear ends of the activated carbon adsorption module. The two infrared detection modules are used to obtain the concentration data of carbon tetrachloride gas in the mixed gas before and after entering the activated carbon adsorption module, to obtain the adsorption efficiency of the activated carbon, and to obtain the carbon tetrachloride value of the activated carbon based on the adsorption efficiency.

[0012] The activated carbon adsorption module is used to adsorb carbon tetrachloride vapor in the mixed gas.

[0013] Another objective of this application is to provide a method for detecting the carbon tetrachloride value of activated carbon, wherein the method is applied to a carbon tetrachloride value detection system for activated carbon as described above to determine the carbon tetrachloride value of activated carbon, and the method includes:

[0014] The pretreatment module is activated to convert the ambient gas into dry pretreatment gas, and the pretreatment gas is then introduced into the infrared detection module at the back end of the activated carbon adsorption module.

[0015] The pretreated gas is introduced into the carbon tetrachloride bubbling module until the concentration of carbon tetrachloride detected by the infrared detection module at the front end of the activated carbon adsorption module remains below the first fluctuation threshold concentration within the first fluctuation threshold time.

[0016] Obtain the carbon tetrachloride concentration difference between the front and rear infrared detection modules of the activated carbon adsorption module; obtain the carbon tetrachloride value of the activated carbon based on the concentration difference.

[0017] This application provides a system for detecting the carbon tetrachloride (CTC) value of activated carbon. A key advantage of this system is that its infrared detection module can accurately capture the characteristic absorption peaks of CTC in the infrared spectrum. By measuring the change in gas concentration before and after CTC adsorption on the activated carbon sample, the instrument can efficiently and accurately characterize the CTC value of the activated carbon. Compared to the traditional national standard weighing method, this system significantly improves detection efficiency, simplifies the operation process, and enhances measurement accuracy. Attached Figure Description

[0018] Figure 1 An application environment diagram of a carbon tetrachloride value detection system for activated carbon provided in this application embodiment;

[0019] Figure 2 A schematic diagram of the test results of a carbon tetrachloride value detection system for activated carbon provided in an embodiment of this application;

[0020] Figure 3 This is a flowchart illustrating a method for detecting the carbon tetrachloride value of activated carbon provided in an embodiment of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are used only to distinguish the first unit or module from another unit or module. For example, without departing from the scope of this application, the first module may be referred to as the second module, and similarly, the second module may be referred to as the first module.

[0023] like Figure 1 As shown in one embodiment, a schematic diagram of the connection relationship between various modules in an activated carbon carbon tetrachloride value detection system is presented. It can be understood that... Figure 1 The labels ①, ②, ③, and ④ in the text all refer to three-way valves. Figure 1 The system includes at least the following modules:

[0024] The system includes a pretreatment module, a temperature and flow control module, a carbon tetrachloride bubbling module, an infrared detection module, and an activated carbon adsorption module.

[0025] The pretreatment module is used to remove particulate matter and moisture from the input ambient air to obtain pretreated gas.

[0026] The temperature and flow control module is used to acquire the pre-treated gas, control the gas flow rate of the pre-treated gas, and perform bidirectional temperature control to maintain the temperature stability of the output gas, thereby obtaining a constant temperature gas.

[0027] The carbon tetrachloride bubbling module is used to disperse the constant-temperature gas into a large number of small bubbles and pass them into liquid carbon tetrachloride to obtain a mixed gas of carbon tetrachloride vapor and constant-temperature gas.

[0028] At least two infrared detection modules are respectively set at the front and rear ends of the activated carbon adsorption module. The two infrared detection modules are used to obtain the concentration data of carbon tetrachloride gas in the mixed gas before and after entering the activated carbon adsorption module, to obtain the adsorption efficiency of the activated carbon, and to obtain the carbon tetrachloride value of the activated carbon based on the adsorption efficiency.

[0029] The activated carbon adsorption module is used to adsorb carbon tetrachloride vapor in the mixed gas.

[0030] Those skilled in the art will recognize that the carbon tetrachloride value (CTC value) of activated carbon is a core performance indicator used to quantitatively evaluate the adsorption capacity of activated carbon. Traditional methods require repeated disassembly and reassembly of the activated carbon testing tube for weighing. On the one hand, ambient moisture is adsorbed by the activated carbon during disassembly and reassembly, leading to a positive deviation in mass measurement; on the other hand, carbon tetrachloride volatilizes and dissipates during weighing, causing a negative deviation in adsorption capacity detection. The combined error resulting from these two factors lacks data verification, affecting the reliability of the data.

[0031] In this embodiment, the system is a portable detector specifically designed for rapid on-site evaluation of the adsorption capacity of activated carbon in the gas phase. The infrared detection module in this system employs dual nondispersive infrared sensing technology to accurately capture the characteristic absorption peaks of carbon tetrachloride in the infrared spectrum. By measuring the change in gas concentration before and after CTC adsorption in the activated carbon sample, the instrument can efficiently and accurately characterize the CTC value of the activated carbon. Compared to the traditional national standard weighing method, this system significantly improves detection efficiency, simplifies the operation process, and enhances measurement accuracy. Preferably, the carbon tetrachloride bubbling module can adopt a semiconductor cooling-heating dual-mode temperature control scheme, using a temperature sensor for real-time feedback to dynamically adjust the cooling and heating output, achieving constant-temperature bubbling control at a preset temperature. A filter element is installed at the air inlet inside the bubbling bottle to ensure uniform airflow dispersion and bubble formation, improving the volatilization efficiency of carbon tetrachloride. A temperature sensor is designed at the air outlet to achieve real-time sensing and feedback of the bubbling temperature, ensuring the uniformity of constant-temperature bubbling.

[0032] In this embodiment, based on the real-time monitored adsorption efficiency, the total mass of carbon tetrachloride adsorbed by the activated carbon sample from the start of the test to saturation can be calculated, thus obtaining the carbon tetrachloride value of the activated carbon. The specific method can be as follows:

[0033] First, calculate the instantaneous adsorption mass. Within an extremely short time interval dt, the mass dm of carbon tetrachloride adsorbed by activated carbon can be calculated using the following formula:

[0034] dm=( - )×F×dt

[0035] in: - The concentration difference is calculated from the adsorption efficiency. F is the airflow rate, which is kept constant by the flow control module. dt is an extremely short time interval.

[0036] The instrument's microprocessor continuously integrates all instantaneous adsorption masses (dm) from the start to the end of the test, thus obtaining the total mass (M) of carbon tetrachloride adsorbed by the activated carbon during the entire test. This total mass is then divided by the mass of the activated carbon sample. Multiplying this by 100% gives the final CTC value:

[0037] CTC value (%) = (M / )×100%

[0038] The method provided in this application has the advantage of being fully automatic, efficient, and accurate compared to the traditional gravimetric method. It avoids human error and can obtain the entire adsorption kinetic curve, providing richer information.

[0039] In a preferred embodiment, the system further includes an exhaust gas treatment module;

[0040] The exhaust gas treatment module is located at the airflow outlet of the infrared detection module at the rear end of the activated carbon adsorption module, and is used to adsorb carbon tetrachloride contained in the exhaust gas of the test process.

[0041] In this embodiment of the application, carbon tetrachloride generated in the activated carbon tail gas pipe adsorption test process can be used to reduce environmental pollution.

[0042] In a preferred embodiment, the pretreatment module includes an air pump, a filter, a condenser tube, and a drying tube;

[0043] The filter includes at least a PTFE filter element, a molecular sieve, and silica gel.

[0044] The air pump is used to drive ambient air through a PTFE filter, a molecular sieve, and silica gel in sequence to remove particulate matter and moisture from the incoming ambient air.

[0045] In this embodiment, an integrated design of filtration and staged drying is adopted. An air pump drives ambient air to pass through a PTFE filter to intercept and remove particulate matter, and then through a molecular sieve and silica gel to remove moisture.

[0046] In a preferred embodiment, the temperature and flow control module includes a needle valve and a first semiconductor temperature control plate;

[0047] The needle valve is used to control the gas flow rate;

[0048] The first semiconductor temperature control chip is based on bidirectional temperature control of carbon tetrachloride constant temperature bubbling, so that the carbon tetrachloride bubbling module can operate stably at a preset temperature.

[0049] In this embodiment, the gas flow rate of the gas after the drying tube can be controlled by a needle valve throughout the process; the CTC constant temperature bubbling and activated carbon constant temperature adsorption can be controlled by a semiconductor cooling chip; and the bidirectional temperature control capability and intelligent adjustment of the semiconductor cooling chip, combined with heat dissipation and insulation design, can achieve stable operation of the carbon tetrachloride bubbling module at the set temperature.

[0050] In a preferred embodiment, the two infrared detection modules disposed at the front and rear ends of the activated carbon adsorption module are based on non-dispersive infrared detection and simultaneously collect the concentration data of carbon tetrachloride gas in the mixed gas before and after the activated carbon adsorption module.

[0051] In this embodiment, the system employs non-dispersive infrared technology. Based on the carbon tetrachloride molecules' absorption band at the inlet and outlet of the carbon measuring tube, it simultaneously collects CTC gas concentration data before and after adsorption and calculates the activated carbon adsorption efficiency in real time. The infrared module incorporates a real-time temperature and humidity compensation algorithm, effectively eliminating environmental fluctuation interference and ensuring that the full-range detection accuracy remains stable within ±5 F.S.

[0052] In a preferred embodiment, the activated carbon adsorption module includes: a receiving tube, a heat insulation tube, and a second semiconductor temperature control plate;

[0053] The receiving tube is used to hold activated carbon;

[0054] The insulation pipe is wrapped around the outside of the receiving pipe to keep the receiving pipe warm.

[0055] The second semiconductor temperature control chip is used to control the temperature inside the receiving tube to remain stable.

[0056] In this embodiment, the activated carbon containing tube can be made of stainless steel, with an external insulation structure and an integrated semiconductor cooling chip to achieve precise temperature control of the adsorption temperature. A high-efficiency filter is located at the rear end of the measuring tube to effectively block activated carbon particles from entering the infrared detection module, ensuring that the precision optical components are protected from contamination.

[0057] In a preferred embodiment, the activated carbon adsorption module further includes an activated carbon particle filter, which is used to block activated carbon particles in the activated carbon adsorption module from entering the infrared detection end.

[0058] In this embodiment, the particulate filter is used to protect high-precision optical equipment and improve system durability and lifespan.

[0059] In a preferred embodiment, the system further includes a data acquisition and central control module, used to acquire data collected by the aforementioned infrared detection module, and to store and calculate the measured data. This module can also automatically control the on / off state of multiple valves in the system based on preset rules.

[0060] In a preferred embodiment, a method for detecting the carbon tetrachloride value of activated carbon is also provided. This method can be applied to the activated carbon tetrachloride value detection system described above to determine the carbon tetrachloride value of activated carbon. The method includes:

[0061] The pretreatment module is activated to convert the ambient gas into dry pretreatment gas, and the pretreatment gas is then introduced into the infrared detection module at the back end of the activated carbon adsorption module.

[0062] The pretreated gas is introduced into the carbon tetrachloride bubbling module until the concentration of carbon tetrachloride detected by the infrared detection module at the front end of the activated carbon adsorption module remains below the first fluctuation threshold concentration within the first fluctuation threshold time.

[0063] Obtain the carbon tetrachloride concentration difference between the front and rear infrared detection modules of the activated carbon adsorption module; obtain the carbon tetrachloride value of the activated carbon based on the concentration difference.

[0064] In this embodiment, the above method can be specifically as follows: Figure 3 The steps shown can be summarized as follows:

[0065] 1. System initialization: The air pump in the preprocessing module is started by program control.

[0066] 2. In such Figure 1 In the illustrated pathway, the system controls the opening and closing of valves, allowing airflow to pass through the pathway formed by valves ①, ③, and ④, bypassing valve ②. That is, ambient gas, after being processed by the pretreatment module to produce dry air, bypasses the main pathway containing the carbon tetrachloride bubbling module and is directly and continuously purged by the infrared detection module at the rear of the activated carbon adsorption module until the carbon tetrachloride concentration detected by the infrared detection module at the rear approaches zero.

[0067] 3. Once the carbon tetrachloride vapor has stabilized, the system controls the airflow through the path formed by valves ①, ②, and ④, bypassing valve ③. This allows the dry air to enter the carbon tetrachloride bubbling module and then pass over the infrared detection module at the rear of the activated carbon adsorption module. A balance determination is then performed; if the carbon tetrachloride concentration fluctuation output by the infrared detection module at the front of the activated carbon adsorption module remains below a preset threshold for several minutes, the result is considered stable.

[0068] 4. Perform adsorption detection and close the circuit breaker. Figure 1The shown pathways 1 and 2 ensure that the airflow passes only through the main pathway, initiating the adsorption timing and enabling real-time synchronous concentration monitoring by the two infrared detection modules. This effectively reduces measurement errors and achieves high-precision detection.

[0069] In a preferred embodiment, the method further includes:

[0070] The carbon tetrachloride concentration difference is obtained, and the detection is automatically terminated and a detection result is generated when the following conditions are met:

[0071] The concentration difference is not greater than a preset concentration difference threshold, and the numerical fluctuation of the carbon tetrachloride concentration difference is continuously less than the second fluctuation threshold concentration within the second fluctuation threshold time.

[0072] In a preferred embodiment, both the first fluctuation threshold time and the second fluctuation threshold time are less than ten minutes, and both the first fluctuation threshold concentration and the second fluctuation threshold concentration are set below 5%.

[0073] In this embodiment, preferred coefficients for the threshold are given.

[0074] In this embodiment, the system can automatically output results when it detects that the following conditions are met: the concentration difference detected by the infrared detection module is not greater than a set threshold; the fluctuation of the dual module readings is less than the threshold fluctuation concentration for several minutes; and the pump automatically stops and the data is saved after the standard is met. Through the above settings, the automation and intelligence of this system are higher, and no manual assistance is required throughout the process.

[0075] In the embodiments of this application, the explanation and description of the above-mentioned activated carbon tetrachloride value detection system can be referred to the explanation and description of the corresponding method above. For the description of the activated carbon tetrachloride value detection method, please refer to the above text, which will not be repeated here.

[0076] In a preferred embodiment, the detection accuracy of this solution was tested, and the test results are as follows: Figure 2 As shown, the correlation between the measurement results from the national standard weighing method and the results from the infrared detection method was verified. Based on the verification, it can be seen that... The value is 0.9967, and the error of the test results of this method is ≤5% compared with the national standard test method.

[0077] In the embodiments of this application, the advantages of this method are:

[0078] The testing process is simplified by using two infrared modules to read the CTC values ​​of activated carbon before and after adsorption. After adsorption saturation, the system automatically integrates and calculates the CTC value of the activated carbon, reducing the number of weighing operations.

[0079] The equipment supported by this method allows for real-time monitoring of activated carbon absorption saturation. The current activated carbon adsorption saturation level can be determined in real time by observing the changes in signal values ​​from two infrared modules before and after adsorption. This eliminates the need for excessive aeration required by manual weighing methods.

[0080] This method avoids the systematic errors of multiple weighings and also avoids the influence of the external environment on the activated carbon inside the activated carbon measuring tube. For the infrared module, the module was calibrated using the national standard weighing method, and the correlation between the two reached 0.997. In addition, the infrared module was calibrated using three types of activated carbon with different CTC values ​​to ensure the accuracy of the method.

[0081] Those skilled in the art will understand that Figure 1 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0082] In one embodiment, the activated carbon tetrachloride value detection method provided in this application can be implemented as a computer program and automatically run in a data processing device within a system. The memory of the data processing device can store the various program modules constituting the activated carbon tetrachloride value detection method. The computer program composed of the various program modules causes the processor to execute the steps in the activated carbon tetrachloride value detection method of the various embodiments of this application described in this specification.

[0083] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, causes the processor to perform the steps of the activated carbon tetrachloride value detection method as described above.

[0084] In the embodiments of this application, the description of the detection method for the carbon tetrachloride value of activated carbon is as described above, and will not be repeated here.

[0085] It should be understood that although the steps in the flowcharts of the various embodiments of this application are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in each embodiment may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0086] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Furthermore, any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A system for detecting the carbon tetrachloride value of activated carbon, characterized in that, The system includes: The system includes a pretreatment module, a temperature and flow control module, a carbon tetrachloride bubbling module, an infrared detection module, and an activated carbon adsorption module. The pretreatment module is used to remove particulate matter and moisture from the input ambient air to obtain pretreated gas. The temperature and flow control module is used to acquire the pre-treated gas, control the gas flow rate of the pre-treated gas, and perform bidirectional temperature control to maintain the temperature stability of the output gas, thereby obtaining a constant temperature gas. The carbon tetrachloride bubbling module is used to disperse the constant-temperature gas into a large number of small bubbles and pass them into liquid carbon tetrachloride to obtain a mixed gas of carbon tetrachloride vapor and constant-temperature gas. At least two infrared detection modules are respectively set at the front and rear ends of the activated carbon adsorption module. The two infrared detection modules are used to obtain the concentration data of carbon tetrachloride gas in the mixed gas before and after entering the activated carbon adsorption module, to obtain the adsorption efficiency of the activated carbon, and to obtain the carbon tetrachloride value of the activated carbon based on the adsorption efficiency. The activated carbon adsorption module is used to adsorb carbon tetrachloride vapor in the mixed gas.

2. The detection system for carbon tetrachloride value of activated carbon according to claim 1, characterized in that, The system also includes an exhaust gas treatment module; The exhaust gas treatment module is located at the airflow outlet of the infrared detection module at the rear end of the activated carbon adsorption module, and is used to adsorb carbon tetrachloride contained in the exhaust gas of the test process.

3. The detection system for carbon tetrachloride value of activated carbon according to claim 1, characterized in that, The pretreatment module includes an air pump, a filter, a condenser tube, and a drying tube; The filter includes at least a PTFE filter element, a molecular sieve, and silica gel. The air pump is used to drive ambient air through a PTFE filter, a molecular sieve, and silica gel in sequence to remove particulate matter and moisture from the incoming ambient air.

4. The detection system for carbon tetrachloride value of activated carbon according to claim 1, characterized in that, The temperature and flow control module includes a needle valve and a first semiconductor temperature control plate; The needle valve is used to control the gas flow rate; The first semiconductor temperature control chip controls the temperature of the carbon tetrachloride constant temperature bubbling module based on bidirectional temperature control, so that the carbon tetrachloride bubbling module can operate at a constant temperature at a preset temperature.

5. The detection system for carbon tetrachloride value of activated carbon according to claim 1, characterized in that, The two infrared detection modules located at the front and rear ends of the activated carbon adsorption module are based on non-dispersive infrared detection and simultaneously collect the concentration data of carbon tetrachloride gas in the mixed gas before and after the activated carbon adsorption module.

6. The detection system for carbon tetrachloride value of activated carbon according to claim 1, characterized in that, The activated carbon adsorption module includes: a receiving tube, a heat insulation tube, and a second semiconductor temperature control plate; The receiving tube is used to hold activated carbon; The insulation pipe is wrapped around the outside of the receiving pipe to keep the receiving pipe warm. The second semiconductor temperature control plate is used to control the temperature inside the containment tube to remain stable.

7. The detection system for carbon tetrachloride value of activated carbon according to claim 1, characterized in that, The activated carbon adsorption module also includes an activated carbon particle filter, which is used to prevent activated carbon particles in the activated carbon adsorption module from entering the infrared detection module.

8. A method for detecting the carbon tetrachloride value of activated carbon, characterized in that, The method is applied to a carbon tetrachloride value detection system for activated carbon as described in any one of claims 1-7 to determine the carbon tetrachloride value of activated carbon, the method comprising: The pretreatment module is activated to convert the ambient gas into dry pretreatment gas, and the pretreatment gas is then introduced into the infrared detection module at the back end of the activated carbon adsorption module. The pretreated gas is introduced into the carbon tetrachloride bubbling module until the concentration of carbon tetrachloride detected by the infrared detection module at the front end of the activated carbon adsorption module remains below the first fluctuation threshold concentration within the first fluctuation threshold time. Obtain the carbon tetrachloride concentration difference between the front and rear infrared detection modules of the activated carbon adsorption module; obtain the carbon tetrachloride value of the activated carbon based on the concentration difference.

9. The method for detecting the carbon tetrachloride value of activated carbon according to claim 8, characterized in that, The method further includes: The carbon tetrachloride concentration difference is obtained, and the detection is automatically terminated and a detection result is generated when the following conditions are met: The concentration difference is not greater than a preset concentration difference threshold, and the numerical fluctuation of the carbon tetrachloride concentration difference is continuously less than the second fluctuation threshold concentration within the second fluctuation threshold time.

10. The method for detecting the carbon tetrachloride value of activated carbon according to claim 9, characterized in that, The first fluctuation threshold time and the second fluctuation threshold time are both less than 10 minutes; the first fluctuation threshold concentration and the second fluctuation threshold concentration are both less than 5%.

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