A gas-liquid separation reaction device applied to a gas-phase molecular absorption spectrometer

Abstract

This invention belongs to the technical field of gas-liquid separation reaction devices for gas phase molecular absorption spectrometers, and discloses a gas-liquid separation reaction device for use in gas phase molecular absorption spectrometers. The gas-liquid separation reaction device includes: a gas-liquid separation reactor body, with a spiral condensation flow path for upward gas flow at the higher end of the gas-liquid separation reactor body; a cold trap assembly, disposed at the higher end of the gas-liquid separation reactor body, providing cooling to the spiral condensation flow path; and a temperature control assembly, disposed at the higher end of the gas-liquid separation reactor body and surrounding the outer periphery of the cold trap assembly, for rapidly dissipating heat generated at the heating end of the cold trap assembly. This invention, by setting up a spiral condensation flow path and a cold trap assembly, significantly increases the gas flow path and cooling contact area, allowing the water-containing gas generated in the reaction to fully contact the cold trap assembly, thus improving the condensation effect of water vapor.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas-liquid separation reaction device for gas phase molecular absorption spectrometer, specifically, it relates to a gas-liquid separation reaction device applied to gas phase molecular absorption spectrometer. Background Technology

[0002] Gas phase molecular absorption spectrometry (GC-MAS) is a key instrument for detecting elements such as nitrogen and phosphorus in fields such as water quality and the environment. Its detection accuracy is highly dependent on the performance of the gas-liquid separation reaction device—this device must ensure a complete reaction between the sample and reagents and efficiently separate water vapor from the generated gas to prevent water vapor interference with subsequent spectral detection. However, currently available gas-liquid separation reaction cooling devices suffer from numerous technical defects, severely limiting detection efficiency and reliability. Specific problems are as follows: 1) Low cooling efficiency: The existing device has an unreasonable internal cooling structure design, a small cooling contact area, and low thermal conductivity of the internal filling materials such as sand cores. This results in water vapor in the generated gas not being able to condense quickly and fully, and residual water vapor can easily enter the detection system, affecting the detection accuracy.

[0003] 2) Poor structural reliability: Most devices adopt a U-shaped integrated glass structure. The glass material is brittle and is easily broken during installation, transportation or daily use. At the same time, the U-shaped integrated connection design relies on gravity to discharge waste, which not only results in incomplete discharge of reaction waste liquid, but is also easily affected by fluctuations in carrier gas flow, leading to air leakage during discharge, which further interferes with the detection process.

[0004] 3) Insufficient heat dissipation performance: Although some devices are equipped with cooling components, they lack efficient heat dissipation structure design. The heat generated by the cooling components cannot be dissipated in time, which can easily lead to a decrease in cooling efficiency over time and further aggravate the problem of incomplete water-air separation.

[0005] The aforementioned deficiencies in the existing technology result in low detection accuracy, high equipment failure rate, and high maintenance costs for gas phase molecular absorption spectrometers in practical applications, making it impossible to meet the high requirements for the stability and reliability of detection results in fields such as environmental monitoring and water quality analysis.

[0006] Therefore, there is an urgent need to provide a gas-liquid separation reaction device with higher cooling efficiency, more reliable performance, longer service life, and more convenient maintenance for use in gas phase molecular absorption spectrometers, in order to solve the above problems.

[0007] In view of the above, this application is hereby submitted. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the shortcomings of existing gas phase molecular absorption spectrometers in practical applications, such as low detection accuracy, high equipment failure rate, and high maintenance cost. The purpose is to provide a gas-liquid separation reaction device with higher cooling efficiency, more reliable performance, longer service life, and more convenient maintenance for gas phase molecular absorption spectrometers.

[0009] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is: a gas-liquid separation reaction device applied to a gas phase molecular absorption spectrometer, comprising: The main body of the gas-liquid separation reactor is a vertically arranged, hollow cylindrical tube; at the end of the main body of the gas-liquid separation reactor with a higher horizontal height, a spiral condensation flow path is provided for the upward flow of gas. A cold trap assembly is located at the end of the gas-liquid separation reactor body at a higher horizontal level to provide cooling for the spiral condensation flow path. A temperature control component is disposed at the end of the gas-liquid separation reactor body at a higher horizontal level and surrounds the outer periphery of the cold trap assembly; the temperature control component is used to quickly discharge the heat generated at the heating end of the cold trap assembly.

[0010] According to one embodiment of the present invention, the cold trap assembly includes: The first housing is a hollow structural component made of copper. Peltier, wherein the cooling end of the Peltier is attached to the first housing; A temperature-conducting medium is disposed between the first shell and the gas-liquid separation reactor body, and the temperature-conducting medium transfers the Peltier's cooling to the gas-liquid separation reactor body.

[0011] According to one embodiment of the present invention, the thermally conductive medium is copper powder.

[0012] According to one embodiment of the present invention, the temperature regulating component includes: The second housing is a hollow structural component made of engineering plastic; The air inlet is located on the second housing. An air outlet is provided on the second housing; the air outlet and the air inlet are positioned opposite each other. A cooling fan is provided, and at least one cooling fan is provided; the at least one cooling fan is provided on the inner side of the second housing near the air inlet and / or near the air outlet.

[0013] According to one embodiment of the present invention, the gas-liquid separation reaction device further includes: an internal temperature measurement and control component; The internal temperature measurement and control components are disposed within the first housing; the internal temperature measurement and control components are used to monitor the temperature of the main body of the gas-liquid separation reactor, and accordingly control the operating power of the Peltier reactor, and / or, The internal temperature measurement and control component is disposed inside the second housing; the internal temperature measurement and control component is used to monitor the temperature in the second housing and control the operating power of the cooling fan accordingly.

[0014] According to one embodiment of the present invention, the gas-liquid separation reactor body further includes: A solution inlet is provided on the side wall of the gas-liquid separation reactor body; a liquid inlet pipe is provided on the solution inlet; the liquid inlet pipe extends into one end of the gas-liquid separation reactor body and extends to the bottom of the gas-liquid separation reactor body; Waste outlet, which is located at the bottom of the gas-liquid separation reactor body; the horizontal height of the waste outlet is lower than the horizontal height of the extended end of the liquid inlet pipe; An exhaust port is located at the top of the gas-liquid separation reactor body; the exhaust port is connected to the end of the spiral condenser flow path.

[0015] According to one embodiment of the present invention, the gas-liquid separation reaction device further includes: a waste discharge pipe and a waste discharge pump, wherein the waste discharge pipe is connected to the waste discharge port and the waste discharge pump is disposed on the waste discharge pipe.

[0016] According to one embodiment of the present invention, the main body of the gas-liquid separation reactor is a cylindrical tube made of glass.

[0017] According to one embodiment of the present invention, the gas-liquid separation reactor further includes a camera assembly, wherein the camera of the camera assembly records the position of the bottom of the gas-liquid separation reactor body.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: 1) Improve cooling and water vapor separation efficiency to ensure detection accuracy; 2) Optimize heat dissipation performance to maintain long-term stable operation.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a gas-liquid separation reaction device applied to a gas phase molecular absorption spectrometer according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the spiral condensation flow path of the gas-liquid separation reactor body in this embodiment of the present invention.

[0021] Description of main components in the diagram: 1. Gas-liquid separation reactor body; 11. Spiral condenser flow path; 12. Liquid inlet pipe; 13. Waste discharge pipe; 14. Waste discharge pump; 2. Cold trap assembly; 21. First shell; 22. Peltier; 23. Temperature conducting medium; 3. Temperature control assembly; 31. Second shell; 32. Heat dissipation fan; 4. Internal temperature measurement and control assembly; 5. Camera.

[0022] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0026] like Figure 1 and Figure 2 As shown, the gas-liquid separation reaction device for a gas phase molecular absorption spectrometer according to this utility model includes: The gas-liquid separation reactor body 1 is a vertically arranged, hollow cylindrical tube; at the higher end of the gas-liquid separation reactor body, a spiral condensation flow path 11 is provided for the upward flow of gas. Cold trap assembly 2 is located at the end of the gas-liquid separation reactor body at a higher horizontal level, providing cooling capacity for the spiral condensation flow path 11. Temperature control component 3 is located at the end of the gas-liquid separation reactor body at a higher horizontal level and surrounds the outer periphery of the cold trap component 2; the temperature control component 3 is used to quickly discharge the heat generated at the heating end of the cold trap component 2.

[0027] By applying the gas-liquid separation reaction device for gas phase molecular absorption spectrometer provided by this utility model, targeted improvements are made to address the core defects of the existing technology, resulting in the following key technical effects: 1) Improve cooling and water vapor separation efficiency to ensure detection accuracy: The device designs the gas-liquid separation reactor as a vertical hollow cylindrical tube, with a spiral condensation flow path at the higher horizontal end. Compared to the straight or U-shaped flow paths of existing devices, the spiral structure significantly increases the gas flow path and cooling contact area, allowing the water-containing gas generated in the reaction to fully contact the cold trap assembly. At the same time, the cold trap assembly directly provides cooling to the spiral condensation flow path, and with the gravity assistance of the vertical cylindrical tube, it can quickly condense the water vapor in the gas, effectively reducing the amount of water vapor entering the subsequent detection system. This structurally solves the problems of "low cooling efficiency and water vapor interference in detection" in existing technologies, significantly improving detection accuracy. 2) Optimize heat dissipation performance to maintain long-term stable operation: Existing devices suffer from insufficient heat dissipation, leading to a decrease in cooling efficiency over time. However, this device, through its structural design of "temperature regulating components surrounding the outer periphery of the cold trap component," can quickly dissipate the heat generated at the heating end of the cold trap component—preventing the cold trap component from experiencing a decrease in cooling efficiency due to heat accumulation. This ensures that the cold trap component maintains a stable cooling effect over a long period, thereby guaranteeing the continuity and stability of the gas-liquid separation process and solving the defect of "cooling efficiency decreasing over time" in existing technologies.

[0028] Please see the appendix Figure 1 In one specific embodiment of this invention, the cold trap assembly 2 comprises: The first housing 21 is a hollow structural component made of copper. Peltier 22, the cooling end of which is attached to the first housing 21; A temperature-conducting medium 23 is disposed between the first shell 21 and the gas-liquid separation reactor body 1, and the temperature-conducting medium 23 transfers the cooling of the Peltier 22 to the gas-liquid separation reactor body 1.

[0029] In this invention, high thermal conductivity copper is used as the heat transfer (cooling) body (as the first shell 21 of the cold trap assembly 2), which has a larger thermal conductivity area and a better cooling effect on the spiral condensation flow path 11; Peltier 22 is used to provide cooling to remove water vapor interference and improve detection accuracy.

[0030] In one specific embodiment of this example, the first housing 21 is a cylindrical structural component.

[0031] Please see the appendix Figure 1 and attached Figure 2 In one specific embodiment of this example, the thermally conductive medium 23 is (high-purity ultrafine) copper powder.

[0032] In this invention, by using copper powder as the heat-conducting medium 23, the thermal conductivity is higher, the cold energy is transferred rapidly, and at the same time, it plays a buffering role to prevent the glass surface and the copper from interfering with each other and being squeezed and broken, thus protecting the gas-liquid separation reactor body 1, whose internal material is glass.

[0033] In one specific embodiment of this example, the first housing 21 of the cold trap assembly 2 is provided with a filling window to facilitate the replenishment of copper powder and the assembly and maintenance of components, thereby ensuring the overall sealing of the assembly.

[0034] Please see the appendix Figure 1 In one specific embodiment of this invention, the temperature regulating component 3 includes: The second housing 31 is a hollow structural component made of engineering plastic; The air inlet is located on the second housing 31; An air outlet is provided on the second housing 31; the air outlet and the air inlet are positioned opposite each other. At least one cooling fan 32 is provided; the at least one cooling fan 32 is provided on the inner side of the second housing 31 near the air inlet and / or near the air outlet.

[0035] In this invention, the second shell 31, made of engineering plastic, has a wider temperature range and better chemical resistance.

[0036] In one specific embodiment of this example, one cooling fan 32 is provided, and the cooling fan 32 is disposed inside the second housing 31; The cooling fan 32 is located near the air inlet or the air outlet.

[0037] In another specific embodiment of this example, two cooling fans 32 are provided, and both cooling fans 32 are disposed inside the second housing 31; One of the two cooling fans 32 is located near the air inlet, and the other is located near the air outlet; The two fans are of the same model and specifications. They can be started simultaneously or one of them can be started, depending on the needs.

[0038] In another specific embodiment of this example, two cooling fans 32 are provided, and both cooling fans 32 are disposed inside the second housing 31; One of the two cooling fans 32 is located near the air inlet, and the other is located near the air outlet; The two fans are of different models and specifications. They can be started simultaneously or one of them can be started, depending on the needs.

[0039] Please see the appendix Figure 1 In one specific embodiment of this invention, the gas-liquid separation reaction device further includes: an internal temperature measurement and control component 4; The internal temperature measurement and control component 4 is disposed within the first housing 21; the internal temperature measurement and control component 4 is used to monitor the temperature of the gas-liquid separation reactor body 1, and accordingly control the operating power of the Peltier 22, and / or, The internal temperature measurement and control component 4 is disposed inside the second housing 31; the internal temperature measurement and control component 4 is used to monitor the temperature in the second housing 31 and control the operating power of the cooling fan 32 accordingly.

[0040] In one specific embodiment of this example, the internal temperature measurement and control component 4 measures the temperature using a thermocouple. The temperature adjustment of the internal temperature measurement and control component 4 is achieved by the control module, which controls the operating power of the Peltier 22 and / or the operating power of the cooling fan 32 (more specifically, the air module stores a preset temperature standard, compares the temperature information detected by the thermocouple with the temperature standard, and makes corresponding control commands based on the comparison results. The control method is not the focus of this application, so it will not be described in detail).

[0041] Please see the appendix Figure 1 In one specific embodiment of this invention, the gas-liquid separation reactor body 1 further includes: A solution inlet is provided on the side wall of the gas-liquid separation reactor body 1; a liquid inlet pipe 12 is provided on the solution inlet; the liquid inlet pipe 12 extends into one end of the gas-liquid separation reactor body 1 and extends to the bottom of the gas-liquid separation reactor body 1; Waste outlet, which is located at the bottom of the gas-liquid separation reactor body 1; the horizontal height of the waste outlet is lower than the horizontal height of the extended end of the liquid inlet pipe 12; An exhaust port is located at the top of the gas-liquid separation reactor body; the exhaust port is connected to the end of the spiral condensation flow path 11.

[0042] In one specific embodiment of this example, the bottom of the gas-liquid separation reactor body 1 contains the reaction raw material, and the extended end of the liquid inlet pipe 12 is inserted into the reaction raw material (that is, the reaction raw material at least partially covers the liquid inlet pipe 12).

[0043] Please see the appendix Figure 1 In one specific embodiment of this invention, the gas-liquid separation reaction device further includes a waste discharge pipe 13 and a waste discharge pump 14, wherein the waste discharge pipe 13 is connected to the waste discharge port and the waste discharge pump 14 is disposed on the waste discharge pipe 13.

[0044] In one specific embodiment of this example, both the liquid inlet and the waste outlet are clamped by an inner groove O-ring and a threaded lock nut, and a threaded sleeve and an inverted conical pressure ring are combined to ensure a seal.

[0045] In one specific embodiment of this invention, the main body 1 of the gas-liquid separation reactor is a cylindrical tube made of glass. The main body 1 of the gas-liquid separation reactor has an inner diameter of 15mm and a total height of 150mm, and its inner wall is clean and free of impurities.

[0046] Please see the appendix Figure 1 In one specific embodiment of this invention, the gas-liquid separation reaction device further includes a camera assembly, wherein the camera 5 of the camera assembly records the position of the bottom of the gas-liquid separation reactor body 1 for real-time monitoring of the reaction position.

[0047] In one specific embodiment of this example, the camera assembly further includes a fill light, which provides supplementary lighting to ensure that the information acquired by the camera 5 is clear and accurate; The brightness of the supplementary light can be adjusted as needed.

[0048] Specifically: the sample raw materials are reliably preserved in reality; The reagent enters the gas-liquid separation reactor body 1 through the solution inlet and inlet pipe 12. After mixing and reaction, a large amount of water-containing gas is generated and carried into the spiral condensation flow path 11. Under the action of the temperature-controlled (semiconductor) cold trap system, the water vapor in the gas rapidly condenses. The detection gas enters the detection system through a reliably sealed and easily maintained exhaust port. The waste liquid generated in the gas-liquid separation system is discharged through the waste discharge pump 14 (peristaltic pump), completing one sample detection process. In addition, the reaction solution enters the gas-liquid separation reactor body 1 through the inlet pipe 12. The long conduit design is immersed in the reactor liquid surface to form a bubbling state, which ensures a thorough reaction. The camera 5 of the camera assembly is used for visual monitoring of the operation of the gas-liquid separation reaction system, which is convenient for observation, maintenance and feedback.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A gas-liquid separation reaction device for use in a gas phase molecular absorption spectrometer, characterized in that, include: The main body of the gas-liquid separation reactor is a vertically arranged, hollow cylindrical tube; at the end of the main body of the gas-liquid separation reactor with a higher horizontal height, a spiral condensation flow path is provided for the upward flow of gas. A cold trap assembly is located at the end of the gas-liquid separation reactor body at a higher horizontal level to provide cooling for the spiral condensation flow path. A temperature control component is disposed at the end of the gas-liquid separation reactor body at a higher horizontal level and surrounds the outer periphery of the cold trap assembly; the temperature control component is used to quickly discharge the heat generated at the heating end of the cold trap assembly.

2. The gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 1, characterized in that, The cold trap assembly includes: The first housing is a hollow structural component made of copper. Peltier, wherein the cooling end of the Peltier is attached to the first housing; A temperature-conducting medium is disposed between the first shell and the gas-liquid separation reactor body, and the temperature-conducting medium transfers the Peltier's cooling to the gas-liquid separation reactor body.

3. The gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 2, characterized in that, The thermally conductive medium is copper powder.

4. The gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 2, characterized in that, The temperature control component includes: The second housing is a hollow structural component made of engineering plastic; The air inlet is located on the second housing. An air outlet is provided on the second housing; the air outlet and the air inlet are positioned opposite each other. A cooling fan is provided, and at least one cooling fan is provided; the at least one cooling fan is provided on the inner side of the second housing near the air inlet and / or near the air outlet.

5. The gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 4, characterized in that, The gas-liquid separation reaction device also includes: an internal temperature measurement and control component; The internal temperature measurement and control components are disposed within the first housing; the internal temperature measurement and control components are used to monitor the temperature of the main body of the gas-liquid separation reactor, and accordingly control the operating power of the Peltier reactor, and / or, The internal temperature measurement and control component is disposed inside the second housing; the internal temperature measurement and control component is used to monitor the temperature in the second housing and control the operating power of the cooling fan accordingly.

6. A gas-liquid separation reaction apparatus for use in a gas phase molecular absorption spectrometer according to any one of claims 1-5, characterized in that, The main body of the gas-liquid separation reactor also includes: A solution inlet is provided on the side wall of the gas-liquid separation reactor body; a liquid inlet pipe is provided on the solution inlet; the liquid inlet pipe extends into one end of the gas-liquid separation reactor body and extends to the bottom of the gas-liquid separation reactor body; Waste outlet, which is located at the bottom of the gas-liquid separation reactor body; the horizontal height of the waste outlet is lower than the horizontal height of the extended end of the liquid inlet pipe; An exhaust port is located at the top of the gas-liquid separation reactor body; the exhaust port is connected to the end of the spiral condenser flow path.

7. The gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 6, characterized in that, The gas-liquid separation reaction device further includes a waste discharge pipe and a waste discharge pump, wherein the waste discharge pipe is connected to the waste discharge port and the waste discharge pump is installed on the waste discharge pipe.

8. The gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 6, characterized in that, The main body of the gas-liquid separation reactor is a cylindrical tube made of glass.

9. A gas-liquid separation reaction device for a gas-phase molecular absorption spectrometer according to claim 6, characterized in that, The gas-liquid separation reactor further includes a camera assembly, whose camera records the position of the bottom of the gas-liquid separation reactor body.

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