Steam generating device and chemisorption apparatus

Abstract

The application relates to the field of chemical adsorption technology, and particularly provides a steam generating device and a chemical adsorption instrument, and aims to solve the problem of the influence of uneven heating of an existing steam generator on analysis accuracy. To this end, the steam generating device comprises a casing, an input channel for introducing reaction gas and an output channel for discharging steam are arranged in the casing, a steam bottle is arranged in the casing, the steam bottle is used for containing liquid to be evaporated, the inner cavity of the steam bottle is in communication with the output channel, a gas inlet pipe is inserted into the steam bottle, the gas outlet end of the gas inlet pipe extends to the bottom of the steam bottle, the gas inlet end of the gas inlet pipe extends out of the steam bottle and is in communication with the input channel, and a heating device is arranged in the casing and used for heating the steam bottle. The steam generating device provided by the application can isolate the interference of external cold sources, continuously output mixed steam meeting experimental requirements on this basis, and further provide a stable and reliable steam source for the chemical adsorption instrument.

Description

Technical Field

[0001] This application relates to the field of chemical adsorption technology, specifically providing a steam generator and a chemical adsorption instrument. Background Technology

[0002] Chemisorption analyzers are important instruments for studying the properties of catalysts, and are almost indispensable in the study of catalyst structure and performance. A steam generator is involved in a chemisorption analyzer. The steam generator heats the liquid in the steam bottle to form saturated steam, which is then carried by the reactant gas introduced into the steam bottle as a carrier into the sample analysis tube.

[0003] In some related technologies, existing steam generators use an exposed structure or a heating pack design with a simple wire harness. This can easily lead to the formation of a cold zone due to the heating pack falling off, causing saturated steam to condense and flow back during transmission. As a result, the steam entering the sample analysis tube is in an unsaturated state, affecting subsequent analysis.

[0004] Therefore, a new technical solution is needed in this field to solve the above-mentioned technical problems. Utility Model Content

[0005] This application aims to solve the aforementioned technical problem, namely, to address the issue that uneven heating in existing steam generators affects the accuracy of analysis.

[0006] In a first aspect, this application provides a steam generating apparatus, comprising:

[0007] The housing has an input channel for introducing reactive gases and an output channel for discharging vapors.

[0008] A steam bottle is disposed inside the housing, the steam bottle is used to contain the liquid to be evaporated, and the inner cavity of the steam bottle is connected to the output channel;

[0009] An air inlet pipe is inserted into the steam bottle, with the outlet end of the air inlet pipe extending to the bottom of the steam bottle and the inlet end of the air inlet pipe extending out of the steam bottle and communicating with the input channel.

[0010] A heating device, which is disposed inside the housing, is used to heat the steam bottle.

[0011] Optionally, the steam generating device further includes:

[0012] The connector is disposed inside the housing and has an internal mounting cavity. The connector is provided with a first through hole and a second through hole that communicate with the mounting cavity. The open end of the steam bottle is inserted into the mounting cavity and communicates with the output channel through the first through hole. The outlet end of the air inlet pipe passes through the second through hole and the mounting cavity in sequence and is inserted into the steam bottle.

[0013] Optionally, the steam generating device further includes:

[0014] The four-way valve has a first valve port, a second valve port, a third valve port, and a fourth valve port. The first valve port is connected to the input channel, the second valve port is connected to the air inlet end of the air inlet pipe, the third valve port is connected to the output channel, and the fourth valve port is connected to the first through hole. The four-way valve can switch between a first state and a second state. In the first state, the first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port. In the second state, the first valve port is connected to the third valve port, and the second valve port is connected to the fourth valve port.

[0015] Optionally, the steam generating device further includes:

[0016] A bubbler is connected to the outlet end of the air inlet pipe.

[0017] Optionally, the heating device includes:

[0018] A heating element is disposed within the housing and close to the steam bottle; a fan is used to drive airflow through the heating element to form a hot air zone surrounding the steam bottle.

[0019] Optionally, the steam generating device further includes:

[0020] An air guide plate is disposed inside the housing and located between the steam bottle and the heating element. The air guide plate is used to guide the hot air generated by the heating element so that the hot air can surround and disperse around the steam bottle.

[0021] Optionally, the fan is located outside the casing, and the steam generating device further includes:

[0022] An air guide duct, which is connected between the fan and the heating element, is used to guide the airflow generated by the fan to the heating element.

[0023] Optionally, the steam generating device further includes:

[0024] A first temperature monitoring element is disposed on the side wall of the steam bottle for monitoring the temperature of the steam bottle; and / or,

[0025] The second temperature monitoring element is disposed inside the housing and is used to monitor the ambient temperature inside the housing.

[0026] Optionally, the steam generating device further includes:

[0027] An insulation layer is provided on the side wall of the housing.

[0028] In a second aspect, this application provides a chemical adsorption instrument, including a steam generating device as described in any one of the first aspects, the steam generating device being disposed within the casing of the chemical adsorption instrument.

[0029] The steam generator provided in this application adopts a countertop design. The closed and constant-temperature design of the casing can effectively suppress heat loss and isolate external cold source interference, thereby avoiding steam condensation and backflow from the source and providing a suitable environment for stable liquid vaporization. On this basis, the overall integrated structural layout and precise heat supply can continuously output mixed steam that meets the experimental requirements, which helps to improve the reliability of experimental data. Attached Figure Description

[0030] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a schematic diagram of the overall structure of a steam generator according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the internal structure of a steam generator according to an embodiment of this application;

[0033] Figure 3 This is a cross-sectional structural schematic diagram of a steam generating apparatus according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the gas path connection of a steam generator according to an embodiment of this application.

[0035] In the figure, the reference numerals refer to the following:

[0036] 1-Steam generator, 101-Input channel, 102-Output channel, 11-Housing, 12-Steam bottle, 13-Inlet pipe, 14-Heating device, 141-Heating element, 142-Fan, 143-Guide plate, 1431-First guide plate, 1432-Second guide plate, 144-Guide duct, 15-Connector, 150-Mounting cavity, 151-First through hole, 152-Second through hole, 16-Four-way valve, 161-First valve port, 162-Second valve port, 163-Third valve port, 164-Fourth valve port, 17-Bubbler, 18-First temperature monitoring element, 19-Second temperature monitoring element. Detailed Implementation

[0037] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0038] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the relevant devices or elements must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] refer to Figure 1 and Figure 2 , Figure 1 This application presents an overall structural diagram of the steam generating apparatus 1. Figure 2 The internal structure diagram of steam generator 1 is shown.

[0041] Specifically, the steam generator 1 provided in this embodiment adopts a cabinet design, and its core structure includes a housing 11, a steam bottle 12, and a heating device 14. The housing 11, as an integrated load-bearing body, not only provides a stable installation space for the internal components but also creates a closed environment isolated from the outside, forming a constant-temperature cavity, thereby effectively suppressing heat loss and isolating external cold source interference. Inside the housing 11, there is an input channel 101 for introducing reaction gases and an output channel 102 for discharging generated steam. The steam bottle 12, as a liquid evaporation container, is located inside the housing 11 and is used to hold water awaiting evaporation. It is connected to the input channel 101 via an inlet pipe 13 to receive reaction gases, while the inner cavity of the steam bottle 12 is directly connected to the output channel 102, forming a steam discharge channel. The heating device 14 is arranged adjacent to the steam bottle 12 and is responsible for providing the heat required for vaporization, causing the liquid inside the bottle to be heated and converted into steam.

[0042] Furthermore, the outlet end of the inlet pipe 13 can extend to the bottom of the steam bottle 12 and directly introduce the reaction gas into the steam bottle 12 in the form of bubbles, so that the reaction gas can fully agitate the liquid and mix with the steam to form mixed steam during the rising process. The mixed steam is transported to the output channel 102 through the inner cavity of the steam bottle 12 and the output channel 102, and enters the sample analysis tube.

[0043] In one embodiment, to further enhance the sealing and temperature control effect of the housing 11, the steam generator 1 also includes a heat insulation layer that is attached to the side wall of the housing 11. This heat insulation layer can further reduce the heat loss from the inside of the housing 11 to the outside, so that the heat generated by the heating device 14 can be more concentrated around the steam bottle 12, thereby ensuring that the liquid to be evaporated in the steam bottle 12 is continuously and stably converted into saturated steam, while preventing the steam from condensing and flowing back in the transmission path, improving the stability of the steam state delivered to the sample analysis tube, and thus improving the accuracy of the experimental data.

[0044] In one embodiment, in conjunction with reference to Figure 2 and Figure 3 The connection between the steam bottle 12 and the output channel 102, and the connection between the air inlet pipe 13 and the input channel 101, are all integrated through the connector 15. Specifically, the connector 15 is fixedly installed inside the housing 11, and its interior has a through-hole 150. The inner diameter of the through-hole 150 is precisely matched with the size of the mouth of the steam bottle 12. After the mouth of the steam bottle 12 is inserted into the through-hole 150 from one end of the connector 15, a sealed connection is formed with the inner wall of the through-hole 150, allowing the cavity of the steam bottle 12 to communicate with the through-hole 150. Furthermore, the side wall of the connector 15 has a first through-hole 151. One end of the first through-hole 151 is connected to the through-hole 150, and the other end is connected to the output channel 102. The steam generated inside the steam bottle 12 can flow naturally from the mouth into the through-hole 150, and then be smoothly delivered to the output channel 102 through the first through-hole 151. Meanwhile, the end of the connector 15 furthest from the insertion point into the steam bottle 12 has a second through hole 152, which is connected to the input channel 101. The inlet end of the inlet pipe 13 is precisely aligned with the input channel 101, while the outlet end passes through the second through hole 152 and extends into the mounting cavity 150, reaching the interior of the steam bottle 12. The contact points between the inlet pipe 13, the second through hole 152, and the mounting cavity 150 are all sealed to prevent gas leakage. In this way, the reaction gas can enter the inlet pipe 13 through the input channel 101 and the second through hole 152, and finally be introduced into the steam bottle 12 to fully mix with the steam.

[0045] In this embodiment, the integrated through-hole design of the connector 15 not only achieves precise positioning and sealing of the steam bottle 12 and the air inlet pipe 13, but also organizes the channel layout for gas inlet and steam outlet, making the internal structure of the device more compact. At the same time, it improves the sealing of the transmission path and avoids steam leakage or the mixing of outside air, which would affect the experimental results.

[0046] In one embodiment, the connection between the first through hole 151 of the connector 15 and the output channel 102, and the connection between the air inlet end of the air inlet pipe 13 and the input channel 101, are both achieved through a four-way valve 16. The four-way valve 16 changes the flow path conduction relationship by mechanical rotation or displacement of the internal valve core, which can realize multi-path switching. The four valve ports of the four-way valve 16 are respectively connected to each channel. Specifically, the first valve port 161 is fixedly connected to the input channel 101, the second valve port 162 is connected to the air inlet end of the air inlet pipe 13, the third valve port 163 is connected to the output channel 102, and the fourth valve port 164 is connected to the first through hole 151 of the connector 15.

[0047] In this embodiment, in conjunction with the reference Figure 4 , Figure 4 A schematic diagram of the gas circuit connection structure of the steam generator is shown. The four-way valve 16 can respond to different process requirements by switching between a first state and a second state. Figure 4 The diagram shows the gas path connection in the first state.

[0048] Specifically, the first state is a mixed-gas mode, suitable for scenarios where the reactant gas and saturated steam need to be pre-mixed before reaction or transport. In the first state, the first valve port 161 (connected to the input channel 101) of the four-way valve 16 is connected to the second valve port 162 (connected to the inlet end of the inlet pipe 13), and the third valve port 163 (connected to the output channel 102) is connected to the fourth valve port 164 (connected to the first through hole 151). At this time, the reactant gas enters the steam bottle 12 along the path of the input channel 101, the first valve port 161, the second valve port 162, and the inlet pipe 13, and is fully mixed with the steam generated by heating. The mixed steam flows through the first through hole 151 of the connector 15, through the fourth valve port 164 and the third valve port 163, and then through the output channel 102 to the sample analysis tube. The second state is a straight-through mode, suitable for scenarios where only the reactant gas needs to be introduced, or where it is necessary to bypass the steam generation unit. In the second state, the four-way valve 16 switches the passage, making the first valve port 161 and the third valve port 163 open. In this way, the reaction gas enters the output channel 102 directly from the input channel 101 through the first valve port 161 and the third valve port 163, forming a direct path bypassing the steam bottle 12. At the same time, the opening of the second valve port 162 and the fourth valve port 164 can connect the steam bottle 12 and related pipelines to the exhaust channel.

[0049] In one embodiment, to improve the contact efficiency between the process gas and the liquid to be evaporated inside the steam bottle 12 and enhance the steam carrying effect, a bubbler 17 is further connected to the outlet end of the inlet pipe 13 after extending to the bottom of the steam bottle 12. The bubbler 17 is adapted to the internal spatial layout of the steam bottle 12 and can disperse the process gas introduced from the inlet pipe 13 into fine and uniform bubbles, allowing the gas to rise in the liquid with a more sufficient contact area, which helps to make the mixing of process gas and steam more uniform.

[0050] In one embodiment, the heating device 14 employs a hot air circulation heating design. Specifically, the heating device 14 includes a heating element 141 and a fan 142. The heating element 141 is disposed inside the housing 11 and close to the steam bottle 12. In this embodiment, the heating element 141 is located at the bottom of the housing 11 and uses heating elements such as heating wire assemblies or heating plates to provide a stable heat source. The fan 142 is correspondingly disposed outside the housing 11 near the bottom. To ensure efficient airflow conduction, the bottom plate of the housing 11 is provided with air guide holes. An air guide tube 144 is connected between the air guide holes and the fan 142. The air guide tube 144 guides the airflow generated by the fan 142 to the heating element 141 through a sealed connection, so that the airflow fully absorbs heat when flowing through the heating element 141 to form hot air, thereby providing hot airflow to the steam bottle 12.

[0051] Furthermore, to optimize the guidance and distribution of the hot airflow, a guide vane 143 is provided between the steam bottle 12 and the heating element 141. This guide vane 143 consists of a first guide vane 1431 and a second guide vane 1432, arranged in a symmetrical "V" shape, with the larger end of the "V" facing the steam bottle 12 and the smaller end facing the heating element 141. In this way, the hot airflow generated by the heating element 141 is evenly distributed through the inclined guidance of the two guide vanes 143, allowing the hot air to diffuse and tightly surround the outer wall of the steam bottle 12 in all directions, forming a heating area surrounding the steam bottle 12. This design effectively eliminates temperature differences on the outer wall of the steam bottle 12, avoids fluctuations in the liquid evaporation rate caused by uneven local heating, ensures the continuous and stable conversion of the liquid to be evaporated into saturated steam, and further improves the reliability and repeatability of experimental data.

[0052] In one embodiment, the steam generator 1 is equipped with a first temperature monitoring element 18, which is attached to the side wall of the steam cylinder 12 for real-time monitoring of the temperature of the steam cylinder 12. Since the temperature of the steam cylinder 12 directly reflects the heating state of the liquid to be evaporated inside, the output power of the heating device 14 can be dynamically matched through the real-time feedback from the first temperature monitoring element 18. For example, when the monitored temperature is below the threshold required for saturated steam, the heating power of the heating device 14 is increased; when the temperature approaches the preset upper limit, the heating power of the heating device 14 is reduced. This ensures that the liquid temperature remains stable within the optimal range corresponding to the saturated vapor pressure, avoiding steam unsaturation problems caused by overheating or underheating, and providing direct data support for the stability of steam generation.

[0053] Furthermore, the steam generator 1 also includes a second temperature monitoring element 19, which is installed inside the housing 11 to monitor the ambient temperature inside the housing 11 in real time. The second temperature monitoring element 19 and the first temperature monitoring element 18, which monitors the temperature of the steam cylinder 12, form a collaborative monitoring mechanism. The monitoring data from both can be used together to regulate the power of the heating device 14. When the ambient temperature inside the housing 11 is lower than a preset range, the heating device 14 will increase its output to maintain a constant temperature environment, based on the real-time temperature data of the steam cylinder 12, thus preventing steam condensation during transmission due to localized cold zones. When the ambient temperature approaches or exceeds the preset upper limit, the system will promptly trigger the heating device 14 to reduce its power or even stop heating based on the temperature feedback from both, effectively preventing the risk of overheating. This combined control method can accurately ensure the stable heating of the liquid inside the steam cylinder 12 and ensure that the ambient temperature inside the housing 11 is always within a safe range suitable for steam generation, comprehensively improving the safety of device operation and the stability of steam supply.

[0054] This application also provides a chemisorption apparatus, in which the aforementioned steam generator 1 is installed within the apparatus casing. Thanks to the closed, constant-temperature design, uniform heating structure, and flexible channel switching function of the steam generator 1, this chemisorption apparatus can stably output saturated steam, effectively avoiding problems such as steam condensation and reflux, and concentration fluctuations in traditional apparatuses, significantly improving the accuracy of experimental data. Furthermore, its integrated layout and convenient operation design can adapt to the needs of multiple continuous experiments, simplifying the process and reducing external interference, providing more reliable technical support for catalyst-related research.

[0055] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A steam generating device (1), characterized in that, include: The housing (11) is provided with an input channel (101) for introducing reaction gas and an output channel (102) for discharging steam. A steam bottle (12) is disposed inside the housing (11). The steam bottle (12) is used to contain the liquid to be evaporated. The inner cavity of the steam bottle (12) is connected to the output channel (102). An air inlet pipe (13) is inserted into the steam bottle (12). The outlet end of the air inlet pipe (13) extends to the bottom of the steam bottle (12), and the inlet end of the air inlet pipe (13) extends out of the steam bottle (12) and communicates with the input channel (101). A heating device (14) is used to heat the steam bottle (12).

2. The steam generator (1) according to claim 1, characterized in that, The steam generating device (1) further includes: A connector (15) is disposed inside the housing (11) and has an installation cavity (150) inside. The connector (15) is provided with a first through hole (151) and a second through hole (152) communicating with the installation cavity (150). The open end of the steam bottle (12) is inserted into the installation cavity (150) and communicates with the output channel (102) through the first through hole (151). The outlet end of the air inlet pipe (13) passes through the second through hole (152) and the installation cavity (150) in sequence and is inserted into the steam bottle (12).

3. The steam generator (1) according to claim 2, characterized in that, The steam generating device (1) further includes: A four-way valve (16) has a first valve port (161), a second valve port (162), a third valve port (163), and a fourth valve port (164). The first valve port (161) is connected to the input channel (101), the second valve port (162) is connected to the air inlet end of the air inlet pipe (13), the third valve port (163) is connected to the output channel (102), and the fourth valve port (164) is connected to the first through hole (151). The four-way valve (16) can switch between a first state and a second state. In the first state, the first valve port (161) is connected to the second valve port (162), and the third valve port (163) is connected to the fourth valve port (164). In the second state, the first valve port (161) is connected to the third valve port (163), and the second valve port (162) is connected to the fourth valve port (164).

4. The steam generator (1) according to claim 1, characterized in that, The steam generating device (1) further includes: Bubble blower (17), which is connected to the outlet end of the air inlet pipe (13).

5. The steam generating apparatus (1) according to any one of claims 1 to 4, characterized in that, The heating device (14) includes: A heating element (141) is disposed inside the housing (11) and close to the steam bottle (12); A fan (142) is used to drive airflow through the heating element (141) to form a hot air zone surrounding the vapor bottle (12).

6. The steam generator (1) according to claim 5, characterized in that, The steam generating device (1) further includes: A guide plate (143) is disposed inside the housing (11) and located between the steam bottle (12) and the heating element (141). The guide plate (143) is used to guide the hot air generated by the heating element (141) so that the hot air can surround and disperse around the steam bottle (12).

7. The steam generator (1) according to claim 5, characterized in that, The blower (142) is located outside the casing (11), and the steam generating device (1) further includes: An air guide duct (144) is connected between the fan (142) and the heating element (141) to guide the airflow generated by the fan (142) to the heating element (141).

8. The steam generator (1) according to claim 1, characterized in that, The steam generating device (1) further includes: A first temperature monitoring element (18) is disposed on the side wall of the steam bottle (12) for monitoring the temperature of the steam bottle (12); and / or, The second temperature monitoring element (19) is disposed inside the housing (11) and is used to monitor the ambient temperature inside the housing (11).

9. The steam generating device (1) according to claim 1, characterized in that, The steam generating device (1) further includes: An insulation layer is provided on the side wall of the housing (11).

10. A chemical adsorption instrument, characterized in that, Includes a steam generating device (1) as described in any one of claims 1 to 9, wherein the steam generating device (1) is disposed inside the casing of the chemical adsorption instrument.

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