A performance testing device for adsorptive or catalytic materials

Abstract

The application discloses a performance testing device of adsorption or catalytic material, relates to the environmental protection technical field, and aims to solve the problems of complex structure, inconvenient installation and maintenance, and low parameter control precision of an existing testing device. The performance testing device comprises a frame, and an adsorption gas conveying unit, a desorption air conveying unit, an adsorption and desorption unit, an electrical control unit and a gas online analysis unit are installed on the frame. Through integral skid-mounted design, the environmental adaptability of the device is improved. And the structure of two adsorption and desorption towers is adopted, automatic switching of the electric ball valve is combined, and continuous and alternate operation of the adsorption and desorption processes is realized.

Description

Technical Field

[0001] This application relates to the field of environmental protection technology, and in particular to a performance testing device for adsorption or catalytic materials. The testing device is used to test the adsorption and desorption performance of adsorption or catalytic materials on gaseous pollutant media such as VOCs (volatile organic compounds) and CO2. Background Technology

[0002] In the environmental protection field, adsorption and catalytic materials have important applications in the treatment of gaseous pollutants and greenhouse gases such as SO2, NOx, VOCs, and CO2. To achieve the efficient promotion and application of these materials in industrial production and practical pollution control, it is necessary to conduct on-site testing of their adsorption and desorption performance and systematically optimize relevant process parameters.

[0003] However, currently common testing devices still have certain limitations in terms of environmental adaptability, ease of operation, and data accuracy. Some devices have complex structures, which are not conducive to installation, operation, and maintenance; some devices lack precision in the control of key parameters, affecting the reliability of test results; and some devices lack complete safety interlock mechanisms, posing potential safety hazards. Therefore, there is an urgent need to develop a testing device for adsorption or catalytic material performance that can simulate real working conditions, has excellent environmental adaptability, is easy to operate, provides accurate data, and is safe and reliable.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide a performance testing device for adsorption or catalytic materials, enabling efficient, accurate, and continuous detection of the adsorption and desorption properties of the materials.

[0006] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution: A performance testing device for adsorption or catalytic materials includes: a frame on which an adsorption gas delivery unit, a desorption air delivery unit, an adsorption-desorption unit, an electrical control unit, and an online gas analysis unit are mounted; The adsorption-desorption unit includes two identical adsorption-desorption towers, which switch the adsorption and desorption processes via an electric ball valve. The adsorption gas delivery unit is connected to the adsorption-desorption unit via a pipeline; The desorption air delivery unit is connected to the suction-desorption unit via a pipeline; The gas online analysis unit is connected to the inlet and outlet of the adsorption-desorption unit via pipelines; The electrical control unit is electrically connected to the adsorption gas delivery unit, the desorption air delivery unit, the electric ball valve, and the online gas analysis unit.

[0007] The frame provides the installation foundation for each unit. Furthermore, the frame's integrated skid-mounted design facilitates the installation, operation, and maintenance of each unit, improving the equipment's environmental adaptability. During adsorption operations, the material to be tested is first installed in the adsorption-desorption tower. Then, the adsorption gas delivery unit is activated via the electrical control unit to input waste gas into the tower. The online gas analysis unit analyzes the content of harmful components in the waste gas before and after adsorption and transmits the data to the electrical control unit. Comparing the two sets of data yields the material's adsorption performance. During desorption operations, an electric ball valve switches the gas flow direction, allowing heated gas from the desorption air delivery unit to be piped into the adsorption-desorption tower. This heats and desorbs the material that has adsorbed the waste gas. The online gas analysis unit then detects the content of harmful components in the desorption air to determine the material's desorption performance. The two adsorption-desorption towers can be automatically switched via an electric ball valve, enabling continuous alternation of the adsorption and desorption processes.

[0008] Preferably, the adsorption-desorption unit also includes an adsorption inlet pipe, an adsorption outlet pipe, a desorption inlet pipe, and a desorption outlet pipe. The adsorption inlet pipe is connected to the outlet end of the adsorption gas delivery unit, the inlet end of the adsorption inlet pipe is connected to the gas online analysis unit, and the outlet end of the adsorption inlet pipe is connected to the inlet of the two adsorption-desorption towers through two electric ball valves respectively. The air inlet of the adsorption duct is connected to the air outlet of the two adsorption-desorption towers via two electric ball valves, and the air outlet of the adsorption duct is connected to the online gas analysis unit. The air inlet of the desorption air inlet pipe is connected to the air outlet of the desorption air conveying unit, and the air outlet of the desorption air inlet pipe is connected to the air inlet of the two adsorption desorption towers through two electric ball valves respectively. The inlet of the desorption outlet duct is connected to the outlet of the two adsorption-desorption towers via two electric ball valves, and the outlet of the desorption outlet duct is connected to the online gas analysis unit.

[0009] The adsorption inlet duct is used to input waste gas into the adsorption-desorption tower, and the adsorption outlet duct is used to input the adsorbed waste gas into the gas online analysis unit for detection and analysis. The desorption inlet duct is used to input desorption hot air into the adsorption-desorption tower, and the desorption outlet duct is used to input desorbed air into the gas online analysis unit for detection and analysis. The opening and closing of electric ball valves on each pipeline are controlled by the electrical control unit. For example, two adsorption-desorption towers can be divided into tower A and tower B. By opening the electric ball valves on the adsorption inlet and adsorption outlet ducts on the A side and closing the electric ball valves on the B side, the adsorption air can only flow into tower A through the pipeline. Similarly, by opening the electric ball valves on the desorption inlet and desorption outlet ducts on the B side and closing the electric ball valves on the A side, the desorption air can only flow into tower B through the pipeline. This allows the adsorption and desorption of the two adsorption-desorption towers to proceed synchronously and can be switched at timed intervals via a program.

[0010] Preferably, the adsorption gas delivery unit includes a filter, a heat exchanger, and an adsorption fan. The filter is securely connected to the frame, the inlet end of the heat exchanger is connected to the outlet end of the filter, and the heat exchanger is externally connected to a cooling water unit. The inlet end of the adsorption fan is connected to the outlet end of the heat exchanger, and the outlet end of the adsorption fan is connected to the adsorption air inlet pipe. The outlet end of the adsorption fan is equipped with a thermal gas flow meter and a temperature sensor, which are electrically connected to the electrical control unit. The adsorption fan has a built-in frequency converter, which is electrically connected to the electrical control unit.

[0011] The pipeline of the adsorption gas delivery unit is made of stainless steel. The adsorption fan is the main power source of the adsorption gas delivery unit. When the adsorption fan starts, it generates negative pressure, thereby inputting the waste gas to be adsorbed into the adsorption desorption tower. The filter is used to remove impurities in the waste gas. The filter uses a polytetrafluoroethylene filter element. The heat exchanger is used to control the temperature of the waste gas. The thermal gas flow meter and temperature sensor installed on the outlet pipe of the adsorption fan monitor the flow rate and temperature of the outlet gas in real time and transmit the data to the electrical control unit. The electrical control unit adjusts the air volume by adjusting the frequency converter on the adsorption fan and controls the outlet gas temperature by adjusting the flow rate of the cooling water on the heat exchanger, so that the flow rate and temperature of the adsorption gas inlet remain stable.

[0012] Preferably, the desorption air delivery unit includes a desorption fan and an electric heater. The desorption fan is fastened to the frame, and the desorption fan has a built-in frequency converter, which is electrically connected to the electrical control unit. The electric heater is fastened to the frame, the air inlet of the electric heater is connected to the air outlet of the desorption fan, and the air outlet of the electric heater is connected to the desorption air inlet pipe. The outlet of the desorption blower is equipped with a thermal gas flow meter, and the outlet of the electric heater is equipped with a temperature sensor. The thermal gas flow meter and the temperature sensor are electrically connected to the electrical control unit.

[0013] The desorption fan is connected to the electric heater through a pipe, thereby inputting the desorption air into the electric heater. The electric heater has a power of 10 kW, short-circuit protection, a temperature range of room temperature to 300℃, a temperature control accuracy of ±1℃, and a maximum heating rate of 100℃ / min. A thermal gas flow meter at the outlet of the desorption fan works in conjunction with a frequency converter to adjust the air volume. A temperature sensor works in conjunction with the electric heater to control the temperature of the desorption air.

[0014] Preferably, the gas online analysis unit includes a volatile organic compound (VOC) analyzer and a carbon dioxide online analyzer; the VOC analyzer uses a photoionization detector, and the carbon dioxide online analyzer uses an infrared detector.

[0015] The photoionization detector has high sensitivity and a wide detection range. The inlet range of the photoionization detector is 0-2000ppm, the outlet range is 0-500ppm, the response time is ≤10s, the repeatability is ≤±1%FS, the linearity error is ≤±1%FS, and the operating temperature is -40~70℃. The online carbon dioxide analyzer using an infrared detector has high stability and long lifespan. The inlet range of the infrared detector is 0-5000ppm, the outlet range is 0-1000ppm, the measurement accuracy is ±2%FS, the response time T90<10s, the repeatability is ≤±0.5%FS, and the linearity error is ≤±0.5%FS.

[0016] Preferably, the electrical control unit includes a PLC main unit and a touch screen, with the PLC main unit being securely connected to the frame and the touch screen being electrically connected to the PLC main unit.

[0017] The PLC host is used to receive monitoring data from the above sensors, thereby realizing temperature control of the electric heater, and displaying the temperature, pressure, flow rate, carbon dioxide and volatile organic compound concentrations of each unit on the touch screen. It also controls the electric ball valve to realize automatic switching between the two adsorption-desorption towers. Furthermore, it can realize alarm for relevant parameters, shutdown logic control, and data recording and downloading.

[0018] Preferably, the performance testing device also includes a safety interlock unit, which includes an emergency cooling device and a pressure relief device; the emergency cooling device includes a spray nozzle installed inside the adsorption-desorption tower; the pressure relief device is a rupture disc installed on the tank of the adsorption-desorption tower.

[0019] The emergency cooling device uses a temperature sensor installed in the adsorption bed inside the adsorption-desorption tower. When the temperature exceeds the set value, the spray nozzle is activated. When the pressure inside the adsorption-desorption tower is too high, the rupture disc on the tank will break, thereby releasing the pressure. In addition, the metal structure and pipe flange bridging parts of the device are electrostatically grounded to achieve static electricity discharge and lightning protection grounding.

[0020] Preferably, the gas online analysis unit also includes a manual sampler, which is arranged at the inlet end of the adsorption inlet pipe and the outlet end of the adsorption outlet pipe and the desorption outlet pipe.

[0021] The manual sampler uses a 1L / min diaphragm pump as the sampling pump and a glass rotor flow meter for flow control. This allows for the detection of gases in the adsorption inlet, adsorption outlet, and desorption outlet. The detection data from the manual sampler can be compared with the data from the volatile organic compound analyzer and the online carbon dioxide analyzer, thereby calibrating the online detection data and improving the accuracy of gas content detection.

[0022] Compared with the prior art, the beneficial effects achieved by this application are as follows: This application utilizes a skid-mounted frame design, facilitating installation, operation, and maintenance. Employing a dual adsorption-desorption tower structure, combined with automatic switching via electric ball valves, it achieves continuous alternating operation of the adsorption and desorption processes, effectively improving testing efficiency and continuity. In adsorption performance testing, the inlet flow rate and temperature of the exhaust gas are precisely controlled by the adsorption gas delivery unit, and the concentration of harmful gases before and after adsorption is compared in real time using an online gas analysis unit, thereby accurately assessing the material's adsorption efficiency and capacity. During desorption, a stable and controllable hot air supply is provided by the desorption air delivery unit. Online analysis of the concentration of harmful components in the desorption gas accurately detects the material's desorption performance and regeneration capacity. A safety interlock unit is also included, employing spray cooling and rupture disc depressurization to ensure safety under high-temperature and high-pressure conditions. Furthermore, the electrical control unit integrates a PLC host and a touchscreen, achieving fully automated control and data recording, enhancing operational convenience. The online gas analysis unit is equipped with a volatile organic compound analyzer and a carbon dioxide online analyzer, and combined with a manual sampler for data calibration, further ensuring the accuracy and reliability of the test results. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the adsorption gas delivery unit of this application; Figure 3 This is a schematic diagram of the adsorption / desorption unit of this application; Figure 4 This is a schematic diagram of the pipeline layout for this application.

[0025] In the diagram: 1. Frame; 2. Adsorption gas delivery unit; 21. Filter; 22. Heat exchanger; 23. Adsorption fan; 3. Desorption air delivery unit; 31. Desorption fan; 32. Electric heater; 4. Adsorption-desorption unit; 41. Adsorption-desorption tower; 42. Adsorption inlet pipe; 43. Adsorption outlet pipe; 44. Desorption inlet pipe; 45. Desorption outlet pipe; 5. Electrical control unit; 51. PLC host; 52. Touch screen; 6. Gas online analysis unit; 61. Volatile organic compound analyzer; 62. Carbon dioxide online analyzer; 63. Manual sampler; 7. Electric ball valve; 8. Safety interlock unit; 81. Spray nozzle; 82. Rupture disc. Detailed Implementation

[0026] 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. Example 1

[0027] like Figure 1 , Figure 4 As shown, this embodiment provides a performance testing device for adsorption or catalytic materials, including: a frame 1, on which an adsorption gas delivery unit 2, a desorption air delivery unit 3, an adsorption-desorption unit 4, an electrical control unit 5, and a gas online analysis unit 6 are installed; The adsorption-desorption unit 4 includes two adsorption-desorption towers 41 with identical structures. The two adsorption-desorption towers 41 switch the adsorption and desorption processes through an electric ball valve 7. The adsorption gas delivery unit 2 is connected to the adsorption-desorption unit 4 via a pipeline; The desorption air delivery unit 3 is connected to the suction and desorption unit 4 via a pipeline; The gas online analysis unit 6 is connected to the inlet and outlet of the adsorption-desorption unit 4 via a pipeline; The electrical control unit 5 is electrically connected to the adsorption gas delivery unit 2, the desorption air delivery unit 3, the electric ball valve 7, and the gas online analysis unit 6.

[0028] Frame 1 provides the installation foundation for each unit. Furthermore, Frame 1 adopts an integrated skid-mounted design, facilitating the installation, operation, and maintenance of each unit and improving the equipment's environmental adaptability. During adsorption operations, the material to be tested is first installed in the adsorption-desorption tower 41. Then, the adsorption gas delivery unit 2 is activated via the electrical control unit 5 to input waste gas into the adsorption-desorption tower 41. The online gas analysis unit 6 analyzes the content of harmful components in the waste gas before and after adsorption and transmits the data to the electrical control unit 5. By comparing the data from the two tests, the adsorption performance of the material can be determined. During desorption operations, the gas flow direction is switched via the electric ball valve 7, allowing the heated gas from the desorption air delivery unit 3 to be piped into the adsorption-desorption tower 41 to heat and desorb the material that has adsorbed waste gas. The content of harmful components in the desorption air is then detected by the online gas analysis unit 6, thus determining the desorption performance of the material. The two adsorption-desorption towers 41 can be automatically switched via the electric ball valve 7, enabling the adsorption and desorption processes to be carried out alternately and continuously.

[0029] like Figure 2-3 As shown, the adsorption-desorption unit 4 also includes an adsorption inlet pipe 42, an adsorption outlet pipe 43, a desorption inlet pipe 44, and a desorption outlet pipe 45. The adsorption inlet pipe 42 is connected to the outlet end of the adsorption gas conveying unit 2, the inlet end of the adsorption inlet pipe 42 is connected to the gas online analysis unit 6, and the outlet end of the adsorption inlet pipe 42 is connected to the inlet of the two adsorption-desorption towers 41 through two electric ball valves 7 respectively. The air inlet of the adsorption outlet pipe 43 is connected to the air outlet of the two adsorption-desorption towers 41 through two electric ball valves 7 respectively, and the air outlet of the adsorption outlet pipe 43 is connected to the gas online analysis unit 6. The air inlet of the desorption air inlet pipe 44 is connected to the air outlet of the desorption air conveying unit 3, and the air outlet of the desorption air inlet pipe 44 is connected to the air inlet of the two adsorption desorption towers 41 through two electric ball valves 7 respectively. The inlet of the desorption outlet pipe 45 is connected to the outlet of the two adsorption-desorption towers 41 via two electric ball valves 7, and the outlet of the desorption outlet pipe 45 is connected to the gas online analysis unit 6.

[0030] The adsorption inlet pipe 42 is used to input waste gas into the adsorption-desorption tower 41, and the adsorption outlet pipe 43 is used to input the adsorbed waste gas into the gas online analysis unit 6 for detection and analysis. The desorption inlet pipe 44 is used to input desorption hot air into the adsorption-desorption tower 41, and the desorption outlet pipe 45 is used to input desorption air into the gas online analysis unit 6 for detection and analysis. The opening and closing of the electric ball valves 7 on each pipeline is controlled by the electrical control unit 5. For example, the two adsorption-desorption towers 41 can be divided into tower A and tower B. The opening and closing of the adsorption inlet pipe on one side of tower A is controlled by the electrical control unit 5. Electric ball valves 7 on adsorption inlet pipe 42 and adsorption outlet pipe 43 are closed, allowing adsorption air to flow into tower A only through the pipes; electric ball valves 7 on desorption inlet pipe 44 and desorption outlet pipe 45 are opened, and electric ball valves 7 on desorption inlet pipe 44 and desorption outlet pipe 45 are closed, allowing desorption air to flow into tower B only through the pipes. This allows the adsorption and desorption of the two adsorption and desorption towers 41 to be carried out synchronously, and can be switched at timed intervals by a program.

[0031] like Figure 2-3 As shown, the adsorption gas delivery unit 2 includes a filter 21, a heat exchanger 22, and an adsorption fan 23. The filter 21 is fastened to the frame 1. The inlet end of the heat exchanger 22 is connected to the outlet end of the filter 21. The heat exchanger 22 is externally connected to a cooling water unit. The inlet end of the adsorption fan 23 is connected to the outlet end of the heat exchanger 22. The outlet end of the adsorption fan 23 is connected to the adsorption air inlet pipe 42. The outlet end of the adsorption fan 23 is equipped with a thermal gas flow meter and a temperature sensor. The thermal gas flow meter and temperature sensor are electrically connected to the electrical control unit 5. The adsorption fan 23 has a built-in frequency converter, which is electrically connected to the electrical control unit 5.

[0032] The pipeline of the adsorption gas delivery unit 2 is made of 304 stainless steel. The adsorption fan 23 is the main power source of the adsorption gas delivery unit 2. When the adsorption fan 23 starts, it generates negative pressure, thereby inputting the waste gas to be adsorbed into the adsorption desorption tower 41. The filter 21 is used to remove impurities in the waste gas. The filter 21 uses a polytetrafluoroethylene filter element. The heat exchanger 22 is used to control the temperature of the waste gas. The thermal gas flow meter and temperature sensor installed on the outlet pipe of the adsorption fan 23 monitor the flow rate and temperature of the outlet gas in real time and transmit the data to the electrical control unit 5. The electrical control unit 5 adjusts the air volume by adjusting the frequency converter on the adsorption fan 23 and controls the outlet gas temperature by adjusting the flow rate of the cooling water on the heat exchanger 22, so that the flow rate and temperature of the adsorption gas inlet remain stable.

[0033] The desorption air conveying unit 3 includes a desorption fan 31 and an electric heater 32. The desorption fan 31 is fastened to the frame 1. The desorption fan 31 has a built-in frequency converter, which is electrically connected to the electrical control unit 5. The electric heater 32 is fastened to the frame 1. The air inlet of the electric heater 32 is connected to the air outlet of the desorption fan 31. The air outlet of the electric heater 32 is connected to the desorption air inlet pipe 44. The outlet of the desorption fan 31 is equipped with a thermal gas flow meter, and the outlet of the electric heater 32 is equipped with a temperature sensor. The thermal gas flow meter and the temperature sensor are electrically connected to the electrical control unit 5.

[0034] The desorption fan 31 is connected to the electric heater 32 through a pipe, thereby inputting the desorption air into the electric heater 32. The electric heater 32 has a power of 10 kW, short-circuit protection, a temperature range of room temperature to 300℃, a temperature control accuracy of ±1℃, and a maximum heating rate of 100℃ / min. A thermal gas flow meter at the outlet of the desorption fan 31 works in conjunction with a frequency converter to adjust the air volume. A temperature sensor works in conjunction with the electric heater 32 to control the temperature of the desorption air.

[0035] The gas online analysis unit 6 includes a volatile organic compound analyzer 61 and a carbon dioxide online analyzer 62; the volatile organic compound analyzer 61 uses a photoionization detector, and the carbon dioxide online analyzer 62 uses an infrared detector.

[0036] The photoionization detector has high sensitivity and a wide detection range. The inlet range of the photoionization detector is 0-2000ppm, the outlet range is 0-500ppm, the response time is ≤10s, the repeatability is ≤±1%FS, the linearity error is ≤±1%FS, and the operating temperature is -40~70℃. The carbon dioxide online analyzer 62, which uses an infrared detector, has high stability and long life. The inlet range of the infrared detector is 0-5000ppm, the outlet range is 0-1000ppm, the measurement accuracy is ±2%FS, the response time T90<10s, the repeatability is ≤±0.5%FS, and the linearity error is ≤±0.5%FS.

[0037] The electrical control unit 5 includes a PLC host 51 and a touch screen 52. The PLC host 51 is fastened to the frame 1, and the touch screen 52 is electrically connected to the PLC host 51.

[0038] The PLC host 51 is used to receive monitoring data from the above sensors, thereby realizing temperature control of the electric heater 32, and displaying the temperature, pressure, flow rate, carbon dioxide and volatile organic compound concentrations of each unit on the touch screen 52, and controlling the electric ball valve 7 to realize automatic switching between the two adsorption-desorption towers 41; it can also realize relevant parameter alarms, shutdown logic control, and data recording and downloading. Example 2

[0039] To ensure the safe operation of the device and improve the accuracy of gas content detection, the performance testing device also includes a safety interlock unit 8, which includes an emergency cooling device and a pressure relief device. The emergency cooling device includes a spray nozzle 81 installed inside the adsorption-desorption tower 41. The pressure relief device is a rupture disc 82 installed on the tank of the adsorption-desorption tower 41.

[0040] The emergency cooling device uses a temperature sensor installed in the adsorption bed of the adsorption-desorption tower 41. When the temperature exceeds the set value, the spray port 81 is activated. When the pressure inside the adsorption-desorption tower 41 is too high, the rupture disc 82 on the tank will break open, thereby releasing the pressure. In addition, the metal structure and pipe flange bridging parts of the device are electrostatically grounded to achieve electrostatic discharge and lightning protection grounding.

[0041] The gas online analysis unit 6 also includes a manual sampler 63, which is arranged at the inlet end of the adsorption inlet pipe 42 and the outlet ends of the adsorption outlet pipe 43 and the desorption outlet pipe 45.

[0042] The manual sampler 63 uses a 1L / min diaphragm pump as the sampling pump and a glass rotor flow meter for flow control, thereby detecting the gas in the adsorption inlet, adsorption outlet and desorption outlet. The detection data of the manual sampler 63 can be compared with the data of the volatile organic compound analyzer 61 and the carbon dioxide online analyzer 62, thereby calibrating the online detection data and improving the accuracy of gas content detection.

[0043] The working principle of this application is as follows: The core principle of this device is to use an adsorption-desorption tower filled with porous adsorption material or catalytic material (such as activated carbon particles or zeolite molecular sieve particles) to capture specific components in the waste gas; when the adsorption material is saturated, the bed is swept by hot air to desorb pollutant molecules and regenerate the adsorption material.

[0044] The device startup and operation process is as follows: 1. Start-up preparation: First, check whether the safety interlock unit 8 is in place; complete the parameter setting (such as adsorption / desorption temperature, air volume, pressure alarm value, etc.) through the PLC host 51 and touch screen 52 of the electrical control unit 5; 2. Adsorption test: Control the electric ball valve 7 through the electrical control unit 5 to select tower A or tower B for use; the adsorbed gas is transported by the adsorption fan 23, passes through the filter 21 for impurity removal and the heat exchanger 22 for temperature control, and then enters the tower through the lower air inlet of the adsorption / desorption tower 41, where it fully contacts the adsorption / catalytic material packed in the tower to achieve gaseous state. The adsorption of pollutants (VOCs, CO2, etc.) is carried out. During the process, parameters such as temperature, pressure, and flow rate are collected in real time by sensors and transmitted to the electrical control unit 5. 3. Desorption test: After the adsorption test is completed, the system switches to desorption mode and starts the desorption fan to send the desorption air heated to the set temperature by the electric heater 32 into the adsorption-desorption tower 41. The pollutants adsorbed on the material are desorbed by the high-temperature desorption air. The desorbed gas is discharged with the airflow, while the monitoring of various parameters is maintained continuously. The two adsorption-desorption towers 41 can be automatically switched by a program to realize the alternating and continuous operation of the adsorption and desorption processes.

[0045] 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.

[0046] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise expressly 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 between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] The above description is only a preferred embodiment of this application. 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 this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A performance testing device for adsorption or catalytic materials, characterized in that, include: The frame (1) is equipped with an adsorption gas delivery unit (2), a desorption air delivery unit (3), an adsorption-desorption unit (4), an electrical control unit (5), and a gas online analysis unit (6). The adsorption-desorption unit (4) includes two adsorption-desorption towers (41) with identical structures. The two adsorption-desorption towers (41) switch the adsorption and desorption processes through an electric ball valve (7). The adsorption gas delivery unit (2) is connected to the adsorption-desorption unit (4) through a pipeline; The desorption air conveying unit (3) is connected to the suction and desorption unit (4) through a pipeline; The gas online analysis unit (6) is connected to the inlet and outlet of the adsorption-desorption unit (4) via a pipeline; The electrical control unit (5) is electrically connected to the adsorption gas delivery unit (2), the desorption air delivery unit (3), the electric ball valve (7), and the gas online analysis unit (6).

2. The performance testing device for adsorption or catalytic materials according to claim 1, characterized in that: The adsorption-desorption unit (4) further includes an adsorption inlet pipe (42), an adsorption outlet pipe (43), a desorption inlet pipe (44), and a desorption outlet pipe (45). The adsorption inlet pipe (42) is connected to the outlet end of the adsorption gas delivery unit (2), the inlet end of the adsorption inlet pipe (42) is connected to the gas online analysis unit (6), and the outlet end of the adsorption inlet pipe (42) is connected to the inlet of the two adsorption-desorption towers (41) through two electric ball valves (7). The air inlet of the adsorption outlet pipe (43) is connected to the air outlet of the two adsorption-desorption towers (41) through two electric ball valves (7), and the air outlet of the adsorption outlet pipe (43) is connected to the gas online analysis unit (6). The air inlet of the desorption air inlet pipe (44) is connected to the air outlet of the desorption air conveying unit (3), and the air outlet of the desorption air inlet pipe (44) is connected to the air inlets of the two adsorption desorption towers (41) through two electric ball valves (7). The inlet of the desorption outlet pipe (45) is connected to the outlet of the two adsorption-desorption towers (41) through two electric ball valves (7), and the outlet of the desorption outlet pipe (45) is connected to the gas online analysis unit (6).

3. The performance testing device for adsorption or catalytic materials according to claim 2, characterized in that: The adsorption gas delivery unit (2) includes a filter (21), a heat exchanger (22), and an adsorption fan (23). The filter (21) is fastened to the frame (1). The inlet end of the heat exchanger (22) is connected to the outlet end of the filter (21). The heat exchanger (22) is connected to an external cooling water unit. The inlet end of the adsorption fan (23) is connected to the outlet end of the heat exchanger (22). The outlet end of the adsorption fan (23) is connected to the adsorption air inlet pipe (42). The outlet end of the adsorption fan (23) is equipped with a thermal gas flow meter and a temperature sensor. The thermal gas flow meter and temperature sensor are electrically connected to the electrical control unit (5). The adsorption fan (23) has a built-in frequency converter. The frequency converter is electrically connected to the electrical control unit (5).

4. The performance testing device for adsorption or catalytic materials according to claim 2, characterized in that: The desorption air conveying unit (3) includes a desorption fan (31) and an electric heater (32). The desorption fan (31) is fastened to the frame (1). The desorption fan (31) has a built-in frequency converter, which is electrically connected to the electrical control unit (5). The electric heater (32) is fastened to the frame (1), the air inlet of the electric heater (32) is connected to the air outlet of the desorption fan (31), and the air outlet of the electric heater (32) is connected to the desorption air inlet pipe (44). The outlet of the desorption fan (31) is equipped with a thermal gas flow meter, and the outlet of the electric heater (32) is equipped with a temperature sensor. The thermal gas flow meter and the temperature sensor are electrically connected to the electrical control unit (5).

5. The performance testing device for adsorption or catalytic materials according to claim 2, characterized in that: The gas online analysis unit (6) includes a volatile organic compound analyzer (61) and a carbon dioxide online analyzer (62); the volatile organic compound analyzer (61) uses a photoionization detector, and the carbon dioxide online analyzer (62) uses an infrared detector.

6. The performance testing device for adsorption or catalytic materials according to claim 1, characterized in that: The electrical control unit (5) includes a PLC host (51) and a touch screen (52). The PLC host (51) is fastened to the frame (1), and the touch screen (52) is electrically connected to the PLC host (51).

7. The performance testing device for adsorption or catalytic materials according to claim 1, characterized in that: The performance testing device also includes a safety interlock unit (8), which includes an emergency cooling device and a pressure relief device; the emergency cooling device includes a spray nozzle (81) installed in the adsorption-desorption tower (41); the pressure relief device is a rupture disc (82) installed on the tank of the adsorption-desorption tower (41).

8. The performance testing device for adsorption or catalytic materials according to claim 5, characterized in that: The gas online analysis unit (6) also includes a manual sampler (63), which is arranged at the inlet end of the adsorption inlet pipe (42) and the outlet ends of the adsorption outlet pipe (43) and the desorption outlet pipe (45).

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