Test reaction device with temperature control function and test system

Abstract

The utility model provides a test reaction device with a temperature control function and a test system, and relates to the technical field of chemical equipment. The test reaction device with the temperature control function comprises a plurality of heating pieces, the heating pieces are sequentially arranged and define a containing cavity, and the heating pieces can be controlled to heat so that a plurality of temperature control areas can be formed in the containing cavity; the reaction test tube is provided with a gas inlet and a gas outlet, the reaction test tube is arranged in the accommodating cavity, and the reaction test tube is filled with a catalyst; the plurality of temperature measuring pieces are sequentially arranged corresponding to the plurality of temperature control areas, and one temperature measuring piece is used for detecting temperature data of one temperature control area; and the control device is respectively connected with the plurality of temperature measuring pieces and the plurality of heating pieces, and the control device controls the heating power of the heating pieces according to the detection data of the temperature measuring pieces. According to the technical scheme, the problem that the accuracy of a test result is not high due to the fact that the heating amount needed by the reactor cannot be flexibly and accurately adjusted to control the reaction temperature in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical equipment, in particular to a test reaction device with temperature control function and a test system. BACKGROUND

[0002] In the natural gas chemical industry, natural gas reforming technology is widely used. Natural gas reforming reaction is a complex process involving multiple chemical reactions. The reaction rate and equilibrium conversion rate are different in different temperature ranges, so the control of the reaction temperature has precise requirements.

[0003] However, the existing test technology cannot guarantee that the reaction temperature at different positions in the reactor can accurately reach the expected set value, which leads to the inability to accurately achieve different temperature control distribution conditions of the reaction catalyst in different test stages, thereby resulting in low accuracy of test results. CONTENT OF THE INVENTION

[0004] The purpose of the embodiments of the present application is to provide a test reaction device with temperature control function to solve the problem that the existing technology cannot flexibly and accurately adjust the required heating amount of the reactor to control the reaction temperature, thereby resulting in low accuracy of test results.

[0005] To solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0006] The first aspect of the present application provides a test reaction device with temperature control function, comprising: a plurality of heating elements, a plurality of the heating elements are sequentially arranged and enclosed to form a containing cavity, and a plurality of the heating elements can be controlled to heat respectively to form a plurality of temperature control regions in the containing cavity; a reaction test tube having an air inlet and an air outlet, the reaction test tube is placed in the containing cavity, and the reaction test tube is filled with a catalyst; a plurality of temperature measuring elements, a plurality of the temperature measuring elements are sequentially arranged corresponding to a plurality of the temperature control regions, and one of the temperature measuring elements is used to detect the temperature data of one of the temperature control regions; a control device, the control device is connected with a plurality of the temperature measuring elements and a plurality of the heating elements respectively, and the control device controls the heating power of the heating elements according to the detection data of the temperature measuring elements.

[0007] In some embodiments of the present application, the heating elements are at least 3, the heating element located at the air inlet is a preheating heating element, the heating element located at the air outlet is a heat preservation heating element, and the remaining heating elements are sequentially arranged between the preheating heating element and the heat preservation heating element; the range of the catalyst located in the reaction test tube does not exceed the range of the containing cavity.

[0008] In some embodiments of the present application, the accommodation cavity is a columnar structure, the catalyst corresponds to the accommodation cavity and is arranged in a columnar structure, the accommodation cavity is divided into a plurality of temperature control regions along the axial direction thereof, and the two ends of the catalyst are arranged in alignment with the positions of the temperature measuring elements at the start end and the end.

[0009] In some embodiments of the present application, the heating element is 6, and the 6 heating elements are arranged in sequence along the vertical direction. The temperature measuring element is 5, and the 5 temperature measuring elements are arranged in sequence along the vertical direction corresponding to each heating element from the preheating heating element. Each temperature measuring element is arranged at a position 1 / 3 from the bottom along the vertical direction close to each heating element.

[0010] In some embodiments of the present application, the test reaction device with temperature control function further comprises: a pair of protective layers, a pair of protective layers are arranged in the reaction test tube at the positions of the gas inlet and the gas outlet, and the catalyst is pressed into a pair of protective layers; a pair of protective layers are arranged corresponding to the positions of the preheating heating element and the heat preservation heating element; the protective layer has a gap, and the gap is used for gas to pass through.

[0011] In some embodiments of the present application, the reaction test tube comprises an inner tube and an outer tube, the outer tube is sleeved on the outer peripheral side of the inner tube to form an annular space with the inner tube, the catalyst and the protective layer are arranged in the annular space, and a plurality of temperature measuring elements are arranged in the inner tube.

[0012] In some embodiments of the present application, the heating element is annular and is sleeved on the outer periphery of the reaction test tube, the inner wall of the heating element is arranged in contact with the outer wall of the reaction test tube, and at least part of the length of the heating element is different.

[0013] In some embodiments of the present application, the heating element comprises a first part and a second part, one end of the first part and one end of the second part are rotationally connected, the other end of the first part and the other end of the second part are detachably connected, and the accommodation cavity can be opened or closed by detachable connection of the first part and the second part.

[0014] In some embodiments of the present application, the temperature measuring element is a thermocouple, the heating element is a heating tile assembly, the heating tile assembly is provided with the control device and a heating wire, and the control device is connected with the heating wire and the thermocouple corresponding to the heating tile assembly, respectively.

[0015] The second aspect of the present application provides a test system comprising the test reaction device with temperature control function provided by the first aspect of the present application.

[0016] Compared with the prior art, the test reaction device with temperature control function provided by the first aspect of the present application can form multiple temperature control areas with different temperatures in the accommodation cavity through multiple heating members to control heating respectively, so as to meet the differentiated requirements of some complex chemical reactions on temperature at different stages or different positions, and improve the accuracy and efficiency of the reaction. The temperature data are detected in real time by multiple temperature measuring members and fed back to the control device, and the control device can adjust the heating power of the heating member in time according to the detection data to realize dynamic stable control of the temperature, so as to ensure that the reaction temperature of the catalyst at different positions in the reaction test tube reaches the expected set value, thereby ensuring the reliability of the test results. The problem that the prior art cannot flexibly and accurately adjust the required heating amount of the reactor to control the reaction temperature, thereby resulting in low accuracy of the test results, is solved.

[0017] The second aspect of the present application provides a test system, which has similar technical effects to the test reaction device with temperature control function provided by the first aspect of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which several embodiments of the present application are shown by way of example, and wherein like or corresponding elements refer to like or corresponding parts throughout the several views, in which:

[0019] Figure 1 The structure schematic diagram of the test reaction device with temperature control function of the embodiment of the present application is schematically shown.

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1, heating member; 101, preheating heating member; 102, heat preservation heating member; 2, reaction test tube; 201, inner tube; 202, outer tube; 3, catalyst; 4, temperature measuring member; 401, protective sleeve; 5, protective layer; DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present application will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be accurately conveyed to those skilled in the art.

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by those skilled in the art to which the present application belongs.

[0024] In the field of natural gas chemical industry, natural gas reforming technology is widely used. The control accuracy of reaction temperature is extremely high for this technology, and the temperature required for natural gas reforming needs to be tested before formal application. The common test method at present is to use a smaller reaction test tube, heat it through a single heater, and detect the temperature during the heating process. However, the natural gas reforming reaction is extremely complex, involving multiple chemical reactions. Different chemical reactions have obvious differences in reaction rate and equilibrium conversion rate in different temperature ranges.

[0025] Based on the existing technology of small reaction test tube and single heater, it is difficult to ensure that the reaction temperature at different positions in the reactor can accurately meet the expected set value. Especially in different test stages, different temperature control distribution conditions need to be provided for the reaction catalyst, but the existing technology cannot accurately achieve this, which greatly affects the accuracy of the test results.

[0026] Therefore, the present application provides a test reaction device with temperature control function, which combines the electric heating method commonly used in small-scale reactor, adjusts the heating amount required for the reactor in stages, and realizes the gradient arrangement of reaction temperature in a more flexible and controllable way to meet the needs of various test test conditions.

[0027] Embodiment 1

[0028] The embodiment of the present application provides a test reaction device with temperature control function, as shown in Figure 1 The embodiment of the present application provides a test reaction device with temperature control function, as shown in

[0029] The plurality of heating elements 1 are arranged in sequence and enclosed to form a containing cavity. By individually controlling each heating element 1, different temperature control areas can be formed in the containing cavity. The reaction tube 2 is placed in the containing cavity, and the gas inlet and outlet thereof are used for the entry of reactants and the discharge of products, respectively. The reaction tube 2 can be used for reactions such as natural gas and carbon dioxide. The catalyst 3 filled in the reaction tube 2 helps to promote the chemical reaction, and the catalyst 3 can be selected according to the reaction gas. The plurality of temperature measuring elements 4 are arranged one-to-one corresponding to the plurality of temperature control areas. The control device receives temperature data from each temperature measuring element 4, and calculates the heating power of the heating element 1 to be adjusted according to the target temperature set by the internal preset algorithm, and sends a control instruction to the corresponding heating element 1 to realize accurate adjustment of the heating power of the heating element 1, so as to ensure that the reaction temperature of the catalyst 3 at different positions in the reaction tube 2 reaches the expected set value, thereby meeting the needs of various test working conditions.

[0030] The test reaction device with temperature control function provided by the embodiments of the present application can control the heating of the plurality of heating elements 1 respectively, so that a plurality of temperature control areas with different temperatures can be formed in the containing cavity, thereby meeting the differentiated needs of some complex chemical reactions at different stages or different positions for temperature, and improving the accuracy and efficiency of the reaction. The temperature data is detected in real time by the plurality of temperature measuring elements 4 and fed back to the control device, and the control device can adjust the heating power of the heating element 1 in time according to the detection data, so as to realize dynamic stable control of the temperature, ensure that the reaction temperature of the catalyst 3 at different positions in the reaction tube 2 reaches the expected set value, and thereby ensure the reliability of the test results.

[0031] In some embodiments, the heating element 1 is at least 3, the heating element 1 located at the gas inlet is a preheating heating element 101, the heating element 1 located at the gas outlet is a heat preservation heating element 102, and the remaining heating elements 1 are sequentially arranged between the preheating heating element 101 and the heat preservation heating element 102. The range of the catalyst 3 located in the reaction tube 2 does not exceed the range of the containing cavity.

[0032] The heating element 1 is provided at least three, the preheating heating element 101 is provided at the inlet position, which plays a role in the gas entering the reaction region for preliminary heating, so that the gas reaches a suitable temperature for the start of the reaction, and creates good starting conditions for the subsequent chemical reaction in the reaction tube 2. The heat preservation heating element 102 is provided at the outlet position to ensure that the product after the reaction can still maintain a certain temperature when leaving the reaction device, avoiding the condensation of the product, plugging the pipeline or the physical and chemical changes that are not conducive to subsequent processing due to the sudden drop in temperature. The remaining heating elements 1 are sequentially arranged between the preheating heating element 101 and the heat preservation heating element 102. These intermediate heating elements 1 can heat the reaction region at different positions in the reaction tube 2, and can be adjusted in real time to ensure that the entire reaction process is carried out in a suitable temperature environment, meeting the requirements of chemical reactions for temperature distribution. The preheating heating element 101 and the heat preservation heating element 102 can avoid the influence of other factors on the complete reaction of the reaction gas, resulting in inaccurate test temperature results.

[0033] The catalyst 3 is placed in the reaction tube 2, and the range where the catalyst 3 is located is completely inside the accommodation cavity, so as to ensure that the catalyst 3 can be completely heated, thereby maximizing the catalytic activity of the catalyst 3, ensuring the efficient performance of the catalytic reaction, and helping to improve the performance and stability of the entire reaction system.

[0034] In some embodiments, the accommodation cavity is a columnar structure, the catalyst 3 corresponding to the accommodation cavity is also a columnar structure, the accommodation cavity is divided into multiple temperature control regions along the axial direction thereof, and the two ends of the catalyst 3 are aligned with the positions of the temperature measuring elements 4 at the beginning and the end of the multiple temperature measuring elements 4.

[0035] The accommodation cavity is designed as a columnar structure, which is beneficial to the smooth flow of fluid materials along the axial direction in the tubular reactor in chemical production, reducing flow resistance and local turbulence. Correspondingly, the catalyst 3 is also provided as a columnar structure and filled in the reaction tube 2, thereby increasing the contact area between the catalyst 3 and the accommodation cavity.

[0036] The accommodation cavity is divided into temperature control regions along the axial direction thereof, that is, the multiple temperature measuring elements 4 are sequentially arranged along the axial direction of the accommodation cavity, and the two ends of the catalyst 3 are aligned with the positions of the temperature measuring elements 4 at the beginning and the end of the multiple temperature measuring elements 4. That is, one end of the catalyst 3 is aligned with the position of the temperature measuring element 4 at the beginning near the inlet of the accommodation cavity, and the other end is aligned with the position of the temperature measuring element 4 at the end near the outlet of the accommodation cavity, so as to accurately measure the temperature conditions at the two ends of the catalyst 3.

[0037] By setting the accommodating cavity as a columnar structure, the smooth flow of the gas in the axial direction is ensured, the resistance and turbulence are reduced, the gas can contact the catalyst 3 at a relatively stable flow rate and flow state, and the stability of the reaction is improved. The catalyst 3 is set as a columnar structure to adapt to the accommodating cavity, the contact area of the catalyst 3 and the heating element 1 is increased, so that the catalyst 3 can be fully heated, thereby helping to improve the efficiency and conversion rate of the catalytic reaction. By aligning the positions of the catalyst 3 at both ends and the start and end temperature measuring elements 4, the temperature information of the catalyst 3 at both ends can be directly obtained, and the temperature conditions of the reaction at the start and end stages can be clearly mastered by the technician, which provides a key basis for timely adjustment of process parameters and is beneficial to fine control of the entire reaction process.

[0038] In some embodiments, the heating element 1 is 6, and the 6 heating elements 1 are sequentially arranged along the vertical direction. The temperature measuring element 4 is 5, and the 5 temperature measuring elements 4 are sequentially arranged along the vertical direction corresponding to each heating element 1 from the preheating heating element 101. Each temperature measuring element 4 is arranged at a position of 1 / 3 from the bottom along the vertical direction close to each heating element 1.

[0039] There are 6 heating elements 1, and the 6 heating elements 1 are sequentially arranged in the vertical direction to form a vertical sequence of heating elements 1. The 5 temperature measuring elements 4 are sequentially arranged along the vertical direction corresponding to each heating element 1 from the preheating heating element 101. That is, except for the lowermost heat preservation heating element 102, each heating element 1 has a corresponding temperature measuring element 4. At the same time, the position of each temperature measuring element 4 is set at a position of 1 / 3 from the bottom along the vertical direction close to its corresponding heating element 1. For example, for a certain heating element 1, the corresponding temperature measuring element 4 is installed at a position of 1 / 3 from the bottom along the vertical direction of the heating element 1.

[0040] Since the heating elements 1 are sequentially arranged in the same direction, and the heating temperature required by the reaction gas needs to gradually increase from top to bottom to form a gradient. In this case, factors such as heat transfer can cause the temperature control area formed by the heating element 1 located in the middle position to be more easily affected by the heating element 1 above with lower temperature. The temperature measuring element 4 is arranged at a position of 1 / 3 from the bottom along the vertical direction of the heating element 1, which is in the middle lower region of the height of the heating element 1. At this position, the average temperature of the heating element 1 after heating the reaction tube 2 and the internal substances can be better reflected, and the actual temperature condition of the heating element 1 at this position can be more accurately reflected.

[0041] Each heating element 1 (except the heat preservation heating element 102) has a corresponding temperature measuring element 4, which can realize individual temperature monitoring of each heating element 1. Through accurate monitoring of the temperature of each heating element 1, the entire heating system can be overall controlled according to the temperature feedback of different heating elements 1.

[0042] In some embodiments, the test reaction device with temperature control function further comprises: a pair of protective layers 5, which are respectively arranged in the reaction tube 2 at the positions of the gas inlet and the gas outlet, and the catalyst 3 is pressed into the pair of protective layers 5; the pair of protective layers 5 are respectively arranged corresponding to the positions of the preheating heating element 101 and the heat preservation heating element 102; the protective layer 5 has a gap for the gas to pass through.

[0043] In the reaction tube 2, a pair of protective layers 5 are arranged at the positions of the gas inlet and the gas outlet, and the catalyst 3 is pressed into the pair of protective layers 5 to be fixed by the protective layer 5 and not to be moved at will. The protective layer 5 can be a porcelain ball layer, and the protective layer 5 has gaps through which the gas can pass through the protective layer 5 and contact the catalyst 3 wrapped by the protective layer 5 to react. The reaction gas enters the protective layer 5, the catalyst 3, and the protective layer 5 in sequence through the gas inlet and is finally discharged from the gas outlet. The protective layer 5 corresponds to the positions of the preheating heating element 101 and the heat preservation heating element 102.

[0044] The protective layer 5 not only protects the catalyst 3 from being damaged or lost during the reaction, but also fixes the catalyst 3 at a specific position to ensure that the catalyst 3 is in full and stable contact with the reaction gas, thereby improving the catalytic efficiency. By corresponding arrangement of the protective layer 5 with the preheating heating element 101 and the heat preservation heating element 102, the protective layer 5 can be heated, thereby helping the reaction gas to react within a suitable temperature range and improving the stability of the reaction and the purity of the product.

[0045] In some embodiments, the reaction tube 2 comprises an inner tube 201 and an outer tube 202, the outer tube 202 is sleeved on the outer peripheral side of the inner tube 201 to form an annular space with the inner tube 201, the catalyst 3 and the protective layer 5 are arranged in the annular space, and a plurality of temperature measuring elements 4 are arranged in the inner tube 201.

[0046] The reaction tube 2 is composed of the inner tube 201 and the outer tube 202, the inner diameter of the outer tube 202 is greater than the outer diameter of the inner tube 201, the outer tube 202 is sleeved on the outer peripheral side of the inner tube 201 to form an annular space between the inner tube 201 and the outer tube 202. The annular space is used to place the catalyst 3 and the protective layer 5, and the reaction gas flows therein. At the same time, a plurality of temperature measuring elements 4 are installed inside the inner tube 201.

[0047] By composing the reaction tube 2 of the inner tube 201 and the outer tube 202, the reaction process of the reaction gas can be isolated from the temperature measuring elements 4. The direct erosion or chemical reaction of the reaction gas on the temperature measuring elements 4 can be avoided, the temperature measuring deviation caused by such interaction can be prevented, and the reaction process is relatively isolated from the outside, thereby reducing the influence of external factors on the reaction process and improving the reaction effect. By arranging the temperature measuring elements 4 in the inner tube 201, the temperature measuring elements 4 can more accurately measure the real temperature of the catalyst 3, and at the same time, the structure of the reaction tube 2 is compact and the occupied space is reduced.

[0048] In some embodiments, the heating member 1 is annular, and is sleeved on the outer periphery of the reaction tube 2. The inner wall of the heating member 1 is in contact with the outer wall of the reaction tube 2. At least part of the length of the heating member 1 is different.

[0049] The heating member 1 is designed to be annular, and the shape can be sleeved on the outer periphery of the reaction tube 2, for example, a circular ring is arranged around the reaction tube 2. This enables the heating member 1 to uniformly surround the reaction tube 2, providing a more uniform heating environment for the tube. The inner wall of the heating member 1 is in close contact with the outer wall of the reaction tube 2, ensuring that heat can be effectively transferred from the heating member 1 to the reaction tube 2, reducing heat loss during heat transfer. At least part of the length of the heating member 1 is different, for example, the length of the heating member 1 corresponding to a specific reaction area of the reaction tube 2 can be appropriately increased to provide more heat and promote the reaction in that area. By controlling the different lengths of the heating member 1, the difference in heat demand at different positions can be met. The heating member 1 provided in the embodiments of the present application is 6, and the lengths of the 6 heating members 1 from top to bottom are 200mm, 200mm, 330mm, 330mm, 330mm, and 330mm.

[0050] In some embodiments, the heating member 1 includes a first part and a second part. One end of the first part and one end of the second part are rotatably connected. The other end of the first part and the other end of the second part are detachably connected. The accommodation cavity can be opened or closed by detachable connection of the first part and the second part.

[0051] The heating member 1 is annular, for example, circular, and is composed of a first part and a second part. The two parts can be half-arc structures respectively. One end of the first part and one end of the second part are rotatably connected, for example, by a hinged connection, and are connected by a connecting member such as a pin to ensure flexible rotation and enable relative rotation between the two parts. The other end of the first part and the other end of the second part are detachably connected, for example, by a buckle connection. A buckle protrusion is provided on the other end of the first part, and a corresponding buckle groove is provided on the other end of the second part. The two ends can be connected by pressing. Alternatively, a bolt and nut connection can be provided. Corresponding screw holes are provided on the two ends, and the two ends are fixed by screwing the bolt. This detachable connection makes the opening and closing of the accommodation cavity simple, facilitating the placement or removal of the reaction tube 2. This greatly saves the time for placing or removing the reaction tube 2, and improves the operation efficiency during the experiment.

[0052] In some embodiments, the temperature measuring member 4 is a thermocouple, and the heating member 1 is a heating tile assembly. The heating tile assembly is provided with a control device and a heating wire. The control device is connected with the heating wire and the thermocouple of the corresponding heating tile assembly respectively.

[0053] The thermocouple as the existing temperature measuring element can be arranged in the inner tube 201 of the reaction test tube 2 through the protective sleeve 401, a plurality of thermocouples are arranged in parallel, and the display end is arranged outside the reaction test tube 2. The heating tile assembly adopts the existing ring tile structure, and the control device and the heating wire are integrated inside. The control device is connected with the heating wire and the corresponding thermocouple respectively, can receive the temperature electric signal transmitted by the thermocouple, analyze and process the signal, adjust the current size or on-off of the heating wire according to the preset temperature value, control the heating amount of the heating wire, and thus realize the accurate control of the temperature.

[0054] The thermocouple is arranged in the inner tube 201 of the reaction test tube 2, can directly and accurately measure the temperature in the reaction system, and a plurality of thermocouples are connected in parallel, can measure the temperature at different positions, improve the accuracy and reliability of the measurement. The display end is arranged outside the reaction test tube 2, which is convenient for the operator to observe the temperature data in real time. The ring tile structure and the internal integrated design of the heating tile assembly make the heating system compact in structure, small in occupied space, and convenient for installation and layout in the limited space. The control device can accurately adjust the heating amount of the heating wire according to the temperature signal fed back by the thermocouple, can stably control the reaction temperature in the preset range, meets the strict requirements of the reaction on the temperature, is beneficial to improve the selectivity and yield of the reaction, and reduces the occurrence of the side reaction.

[0055] Embodiment 2

[0056] The embodiment of the application provides a test system including the test reaction device with temperature control function provided in the embodiment 1.

[0057] The test system can further include an operation base, the operation base is used for placing the test reaction device with temperature control function; a power supply, the power supply can be used for providing a heating current for the heating element 1 in the test reaction device with temperature control function; and a gas concentration detection device, the gas concentration detection device can be used for detecting the synthesis gas concentration of the reaction gas passing through the test reaction device with temperature control function, and the reaction temperature in the test reaction device with temperature control function can be reset according to the detection result of the synthesis gas concentration.

[0058] The control interface and the data processing module specially adapted to the test reaction device with temperature control function can be developed on the software platform of the test system. In the control interface, the operator can directly set the target temperature, the reaction time and other key parameters of each temperature control region. The data processing module analyzes the collected temperature data in real time, draws a temperature change curve, and generates a detailed data report.

[0059] By integrating the test reaction device with temperature control function in the embodiment 1 into the test system, the test system can flexibly adjust the parameters and configurations of the heating element 1 according to different test requirements, so that the accuracy of the test result can be improved.

[0060] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A test reaction device with temperature control function, characterized in that, include: Multiple heating elements are arranged sequentially and surround a accommodating cavity, and the multiple heating elements can be controlled to heat each other so that multiple temperature-controlled zones are formed within the accommodating cavity; A reaction tube has an inlet and an outlet, the reaction tube is placed inside the accommodating cavity, and the reaction tube is filled with a catalyst; Multiple temperature measuring elements are arranged sequentially to correspond to multiple temperature control zones, and one temperature measuring element is used to detect the temperature data of one temperature control zone. A control device is connected to multiple temperature measuring elements and multiple heating elements respectively, and the control device controls the heating power of the heating elements according to the detection data of the temperature measuring elements.

2. The experimental reaction apparatus with temperature control function according to claim 1, characterized in that, The heating element is at least three, the heating element located at the air inlet is a preheating heating element, the heating element located at the air outlet is a heat preservation heating element, and the remaining heating elements are arranged sequentially between the preheating heating element and the heat preservation heating element; The catalyst is located within the reaction tube within the range of the containment cavity.

3. The experimental reaction apparatus with temperature control function according to claim 1, characterized in that, The accommodating cavity is a columnar structure, and the catalyst is also configured as a columnar structure corresponding to the accommodating cavity. The accommodating cavity is divided into multiple temperature control zones along its axial direction, and the two ends of the catalyst are aligned with the positions of the starting and ending temperature measuring elements among the multiple temperature measuring elements.

4. The experimental reaction apparatus with temperature control function according to claim 2, characterized in that, There are 6 heating elements, which are arranged sequentially along the vertical direction. There are 5 temperature measuring elements, which are arranged sequentially from the preheating heating element along the vertical direction corresponding to each heating element. Each of the temperature measuring elements is positioned approximately one-third of the way up from the bottom along the vertical direction of each of the heating elements.

5. The experimental reaction apparatus with temperature control function according to claim 2, characterized in that, Also includes: A pair of protective layers are respectively located at the air inlet and the air outlet inside the reaction tube, and the catalyst is squeezed into the pair of protective layers; The protective layers are respectively positioned corresponding to the positions of the preheating heating element and the heat-insulating heating element; The protective layer has voids that allow gas to pass through.

6. The experimental reaction apparatus with temperature control function according to claim 5, characterized in that, The reaction tube includes an inner tube and an outer tube. The outer tube is sleeved on the outer periphery of the inner tube to form an annular space with the inner tube. The catalyst and the protective layer are disposed in the annular space, and a plurality of temperature measuring elements are disposed inside the inner tube.

7. The experimental reaction apparatus with temperature control function according to claim 1, characterized in that, The heating element is annular and is sleeved on the outer periphery of the reaction tube. The inner wall of the heating element is in contact with the outer wall of the reaction tube, and at least some of the heating elements have different lengths.

8. The experimental reaction apparatus with temperature control function according to claim 7, characterized in that, The heating element includes a first part and a second part, one end of the first part and one end of the second part are rotatably connected, and the other end of the first part and the other end of the second part are detachably connected. The accommodating cavity can be opened or closed through the detachable connection between the first part and the second part.

9. The experimental reaction apparatus with temperature control function according to claim 1, characterized in that, The temperature measuring element is a thermocouple, and the heating element is a heating tile assembly. The heating tile assembly contains the control device and a heating wire. The control device is connected to the heating wire and the thermocouple corresponding to the heating tile assembly.

10. A testing system, characterized in that, Includes a test reaction apparatus with temperature control function according to any one of claims 1 to 9.

Images