Pretreatment device of organic carbon and inorganic carbon analyzer

Abstract

The utility model provides a pretreatment device of an organic carbon and inorganic carbon analyzer, which comprises a sampling device, an organic carbon analyzer and an inorganic carbon analyzer, and is characterized in that the sampling device is constructed to collect an atmospheric sample and condense moisture in the atmospheric sample to form condensate so as to remove the moisture in the atmospheric sample; the water collecting device is configured to convey an atmosphere sample and collect condensate; the first end of the corrosion device is communicated with the water collecting device, the second end of the corrosion device is communicated with the analyzer, and the corrosion device is configured to receive the atmosphere sample output by the water collecting device so as to absorb and remove volatile organic compounds in the atmosphere sample and convey the volatile organic compounds to the analyzer; the moisture and volatile organic compounds in the atmosphere sample conveyed into the analyzer are reduced, the analysis and detection precision of the analyzer on the atmosphere sample is improved, and the damage degree of the moisture on the analyzer is reduced.

Description

Technical Field

[0001] At least one embodiment of the utility model relates to the technical field of atmospheric particulate matter analysis, and in particular to a pre-processing device for an organic carbon and inorganic carbon analyzer. Background Art

[0002] The organic carbon and inorganic carbon analyzer (analyzer for short) is an instrument used to determine the organic carbon and inorganic carbon content in atmospheric samples.

[0003] Before using the analyzer to detect and analyze the atmospheric samples, the atmospheric samples need to be collected and transported to the analyzer. However, in weather conditions such as summer and rainy season, the humidity of the atmospheric samples is high and the water content is high. When the water enters the analyzer, it will damage the flow sensor, analysis furnace and detector of the analyzer and cause malfunctions. In addition, the volatile organic compounds in the atmospheric samples are gaseous carbon, which is a component that the analyzer does not need to detect, affecting the detection accuracy of the analyzer. Utility Model Content

[0004] In view of this, the utility model provides a pretreatment device for an organic carbon and inorganic carbon analyzer, which is used to at least partially solve the above technical problems, reduce the moisture and volatile organic compounds in the atmospheric samples delivered to the analyzer, improve the accuracy of the analyzer in analyzing and detecting atmospheric samples, and reduce the degree of damage to the analyzer caused by moisture.

[0005] An embodiment of the utility model provides a pre-treatment device for an organic carbon and inorganic carbon analyzer, comprising: a sampling device, configured to collect an atmospheric sample and condense the moisture in the atmospheric sample to form a condensate to remove the moisture in the atmospheric sample; a water collection device, configured to transport the atmospheric sample and collect the condensate; and a dissolver, wherein the first end of the dissolver is connected to the water collection device, and the second end of the dissolver is connected to the analyzer, and is configured to receive the atmospheric sample output by the water collection device to absorb and remove volatile organic compounds in the atmospheric sample and transport it to the analyzer.

[0006] According to an embodiment of the utility model, the sampling device includes: a sampling tube, the atmospheric sample enters from the first end of the sampling tube, the water collecting device is installed at the second end of the sampling tube; and a temperature control component, which is installed on the tube wall of the sampling tube and is constructed to adjust the temperature of the sampling tube so that the moisture in the atmospheric sample contacts the inner wall of the sampling tube to condense to form condensate.

[0007] According to an embodiment of the utility model, the temperature control component includes: a temperature sensor, which is arranged on the inner wall of the first end of the sampling tube and is configured to detect the real-time temperature of the first end of the sampling tube; a temperature regulator, which is arranged on the tube wall of the sampling tube and is configured to heat up or cool down the sampling tube; and a controller, which responds to the real-time temperature detected by the temperature sensor and, when the real-time temperature is lower than the preset temperature range of the controller, controls the temperature regulator to heat up so that the real-time temperature is adjusted to within the preset temperature range; and, when the real-time temperature is higher than the preset temperature range, controls the temperature regulator to cool down so that the real-time temperature is adjusted to within the preset temperature range.

[0008] According to an embodiment of the present invention, the temperature regulator comprises a Peltier.

[0009] According to an embodiment of the utility model, the outer wall of the sampling tube is provided with a heat-insulating layer.

[0010] According to an embodiment of the utility model, the water collecting device includes: a water collecting bottle, which is constructed to collect the condensate; and a three-way pipe, which is connected to the second end of the sampling tube, the water collecting bottle and the first end of the dissolver, so that the atmospheric sample in the sampling tube flows through the three-way pipe and is transported to the dissolver.

[0011] According to an embodiment of the utility model, the water collecting bottle is made of a transparent material.

[0012] According to an embodiment of the utility model, the dissolver is arranged approximately horizontally, and the dissolver gradually tilts upward from the first end to the second end, so that the condensed water at the first end of the dissolver flows into the water collection device under the action of its own weight.

[0013] According to an embodiment of the utility model, the dissolver includes: a shell, a first end of the shell is connected to the water collection device, and a second end is connected to the analyzer; and a plurality of adsorption layers are located inside the shell and are spaced apart in the height direction of the shell to absorb volatile organic compounds in the atmospheric sample flowing through the dissolver.

[0014] According to an embodiment of the utility model, the dissolver further comprises a plurality of support layers, which are spaced apart and distributed in the height direction of the shell to install and support a plurality of the adsorption layers, and the support layers and the adsorption layers are alternately stacked.

[0015] According to the pretreatment device of the organic carbon and inorganic carbon analyzer provided by the utility model, in the process of collecting atmospheric samples, the atmospheric samples enter the sampling device, the sampling device condenses the moisture in the atmospheric samples to form condensate, and collects it into the water collection device, so that the moisture is separated from the atmospheric samples, thereby removing the moisture in the atmospheric samples, and then the atmospheric samples are transported to the dissolver, and the dissolver further absorbs the volatile organic compounds in the atmospheric samples, thereby reducing the moisture and volatile organic compounds in the atmospheric samples transported to the analyzer, effectively improving the accuracy of the analyzer in analyzing and detecting atmospheric samples, and reducing the degree of damage to the analyzer caused by moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0017] Figure 1 The working principle diagram of the pre-treatment device of the organic carbon and inorganic carbon analyzer of the embodiment of the utility model is schematically shown;

[0018] Figure 2 A side view schematically showing an erosion device according to an embodiment of the utility model; and

[0019] Figure 3 A cross-sectional view of a dissolver according to an embodiment of the utility model is schematically shown.

[0020] Reference numerals

[0021] 1. Sampling device;

[0022] 11. Sampling tube;

[0023] 12. Temperature control components;

[0024] 121. Temperature sensor;

[0025] 122. Temperature regulator;

[0026] 123. Controller;

[0027] 2. Water collection device;

[0028] 21. Tee pipe;

[0029] 22. Water collection bottle;

[0030] 3. Dissolver;

[0031] 31. Shell;

[0032] 32. Adsorption layer;

[0033] 33. Support layer;

[0034] 4. Analyzer;

[0035] 5. Insulation layer. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0037] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0038] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0039] When using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, and C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc. When using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, or C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.

[0040] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only for reference to the drawings and are not intended to limit the scope of protection of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted when they may cause confusion in the understanding of the present invention.

[0041] Organic carbon and inorganic carbon analyzers (analyzers for short) are widely used in environmental monitoring. They can perform online component analysis of atmospheric samples and determine the organic carbon and inorganic carbon content in atmospheric samples. Before using the analyzer to detect and analyze atmospheric samples, it is generally necessary to collect the atmospheric samples and transport them to the analyzer. However, when atmospheric samples with high moisture content enter the analyzer, the flow sensor, analysis furnace, and detector of the analyzer will be damaged and cause failures. In addition, volatile organic compounds in atmospheric samples are gaseous carbon, which is a component that the analyzer does not need to detect, affecting the detection accuracy of the analyzer.

[0042] Figure 1 The working principle diagram of the pre-treatment device of the organic carbon and inorganic carbon analyzer of the embodiment of the utility model is schematically shown.

[0043] The embodiment of the utility model provides a pre-processing device for an organic carbon and inorganic carbon analyzer, such as Figure 1 As shown, the pre-treatment device includes a sampling device 1, a water collection device 2 and a dissolver 3. The sampling device 1 is configured to collect an atmospheric sample and condense the water in the atmospheric sample to form a condensate to remove the water in the atmospheric sample; the water collection device 2 is configured to transport the atmospheric sample and collect the condensate; and the first end of the dissolver 3 is connected to the water collection device 2, and the second end of the dissolver 3 is connected to the analyzer 4, and is configured to receive the atmospheric sample output by the water collection device 2, to absorb and remove the volatile organic compounds in the atmospheric sample, and to transport it to the analyzer 4.

[0044] According to the pretreatment device of the organic carbon and inorganic carbon analyzer 4 provided in this embodiment, in the process of collecting atmospheric samples, the atmospheric samples enter the sampling device 1, the sampling device 1 condenses the moisture in the atmospheric samples to form a condensate, and collects it into the water collection device 2, so that the moisture is separated from the atmospheric sample, thereby removing the moisture in the atmospheric sample, and then the atmospheric sample is transported to the dissolver 3, the dissolver 3 further absorbs the volatile organic compounds in the atmospheric sample, thereby reducing the moisture and volatile organic compounds in the atmospheric sample transported to the analyzer 4, effectively improving the accuracy of the analyzer 4 in analyzing and detecting the atmospheric samples, and reducing the degree of damage to the analyzer 4 caused by moisture.

[0045] In detail, in summer or rainy season, the temperature of the atmospheric sample is high, and the humidity is saturated or close to saturation. There is a temperature difference between the temperature of the atmospheric sample and the sampling device 1, and the moisture in the atmospheric sample will condense to form condensate, which will be retained and collected in the water collection device 2 to remove the moisture in the atmospheric sample, so that the moisture is separated from the atmospheric sample, thereby removing the moisture in the atmospheric sample, preventing the moisture from entering the analyzer 4 and causing malfunctions to the flow sensor, analysis furnace or detector in the analyzer 4, and reducing the degree of damage to the analyzer 4 caused by the moisture.

[0046] Furthermore, the volatile organic compounds in the atmospheric sample belong to carbon in the gaseous state. They are components that the organic carbon and inorganic carbon analyzer 4 does not need to detect. After the atmospheric sample flows through the sampling tube 11 and the water collecting device 2, it flows into the dissolver 3, and the dissolver 3 further absorbs and removes the volatile organic compounds in the atmospheric sample, thereby reducing the volatile organic compounds in the atmospheric sample transported to the analyzer 4, and effectively improving the accuracy of the analyzer 4 in analyzing and detecting the atmospheric sample.

[0047] In an exemplary embodiment, Figure 1 As shown, the sampling device 1 includes a sampling tube 11 and a temperature control component 12. The inner wall of the sampling tube 11 is smooth, and the sampling tube 11 can be made of stainless steel, which is not limited here. The atmospheric sample enters from the first end of the sampling tube 11, and the water collection device 2 is installed at the second end of the sampling tube 11. The temperature control component 12 is installed on the tube wall of the sampling tube 11, and is configured to adjust the temperature of the sampling tube 11 so that the moisture in the atmospheric sample contacts the inner wall of the sampling tube 11 and condenses to form condensate, and the condensate flows into the water collection device 2 for collection.

[0048] In an exemplary embodiment, Figure 1 As shown, the temperature control component 12 includes a temperature sensor 121, a temperature regulator 122 and a controller 123. The temperature sensor 121 is disposed on the inner wall of the first end of the sampling tube 11, and is configured to detect the real-time temperature of the first end of the sampling tube 11. The temperature regulator 122 is disposed on the tube wall of the sampling tube 11, and is configured to increase or decrease the temperature of the sampling tube. The controller 123 responds to the real-time temperature detected by the temperature sensor 121. When the real-time temperature is lower than the preset temperature range of the controller 123, the controller 123 controls the temperature regulator 122 to increase the temperature so that the real-time temperature is adjusted to the preset temperature range. When the real-time temperature is higher than the preset temperature range, the controller 122 controls the temperature regulator 122 to decrease the temperature so that the real-time temperature is adjusted to the preset temperature range.

[0049] According to an embodiment of the utility model, during the process of collecting atmospheric samples by the sampling device 1, the temperature sensor 121 detects the real-time temperature of the first end of the sampling tube 11. In weather conditions such as summer and rainy season, the temperature of the atmospheric sample is relatively high, and the real-time temperature detected by the temperature sensor 121 is relatively high. The controller 123 responds to the real-time temperature detected by the temperature sensor 121. When the real-time temperature is higher than the preset temperature range of the controller 123, the controller 123 controls the temperature regulator 122 to cool down, enhances the cooling power of the temperature regulator 122, and produces a cooling effect on the sampling tube 11, thereby reducing the temperature of the sampling tube 11. Condensation occurs when the atmospheric sample contacts the inner wall of the sampling tube 11, so that the moisture in the atmospheric sample condenses to form condensate. The controller 123 adjusts the cooling power of the temperature regulator 122 according to the feedback of the temperature sensor 121 to avoid the temperature of the sampling tube 11 being too low and causing ice, thereby keeping the real-time temperature of the sampling tube 11 within the preset temperature range.

[0050] In a dry winter environment, the moisture content of the atmospheric sample is low, but the temperature is low. The controller 123 responds to the real-time temperature detected by the temperature sensor 121. When the real-time temperature is lower than the preset temperature range of the controller 123, the controller 123 controls the temperature regulator 122 to increase the temperature, so as to prevent the atmospheric sample from contacting the sampling tube 11 and causing icing, and to make the real-time temperature of the sampling tube 11 within the preset temperature range. The temperature sensor 121, the temperature regulator 122 and the controller 123 of the sampling device 1 form a closed-loop temperature control system. The controller 123 responds to the real-time temperature detected by the temperature sensor 121 and controls the temperature regulator 122, so that the real-time temperature of the sampling tube 11 is within the preset temperature range, so that the moisture in the atmospheric sample condenses to form condensate, thereby removing the moisture in the atmospheric sample and reducing the degree of damage caused by the moisture to the analyzer 4.

[0051] In an exemplary embodiment, Figure 1 As shown, the temperature regulator 122 includes a Peltier, which can be connected to a controller 123 for temperature regulation and temperature control. The controller 123 adjusts the heating and cooling effects of the Peltier by controlling the direction and magnitude of the current connected to the Peltier.

[0052] In an exemplary embodiment, the sampling tube 11 is arranged vertically, and the sampling tube 11 may also be arranged tilted from top to bottom so that the condensate flows into the water collecting bottle 22 at the bottom of the sampling tube 11, which is not limited here.

[0053] In an exemplary embodiment, Figure 1As shown, the outer wall of the sampling tube 11 is provided with an insulation layer 5, and the insulation layer 5 is made of materials such as foam, cotton or aerogel felt. The insulation layer 5 is a tubular structure, which is sleeved on the circumferential surface of the outer wall of the sampling tube 11. The length of the insulation layer 5 is equal to the length of the sampling tube 11, so as to surround the sampling tube 11, insulate the sampling tube 11, maintain the temperature of the sampling tube 11, reduce the temperature change amplitude of the sampling tube 11, and facilitate the moisture in the atmospheric sample to contact the inner wall of the sampling tube 11 to condense and form condensate.

[0054] In an exemplary embodiment, Figure 1 As shown, the water collecting device 2 includes a water collecting bottle 22 and a three-way pipe 21. The water collecting bottle 22 is configured to collect condensate. The three-way pipe 21 is detachably connected to the second end of the sampling tube 11, the water collecting bottle 22 and the first end of the dissolver 3, so that the atmospheric sample in the sampling tube 11 flows through the three-way pipe 21 and is transported to the dissolver 3.

[0055] According to the embodiment of the utility model, the atmospheric sample enters the sampling tube 11, and the moisture in the atmospheric sample condenses on the inner wall of the sampling tube 11 to form condensate, and then the atmospheric sample flows through the water collecting bottle 22 through the three-way pipe 21, and then enters the dissolver 3 through the three-way pipe 21. At the same time, the condensate flows downward under the action of its own weight and is retained and collected in the water collecting bottle 22 to remove the moisture in the atmospheric sample, reduce the moisture in the atmospheric sample entering the analyzer 4, and reduce the degree of damage to the analyzer 4 caused by the moisture.

[0056] In an exemplary embodiment, the water collecting bottle 22 is made of a transparent material. The water collecting bottle 22 can be made of a transparent material such as glass or plastic, which is convenient for observing the liquid level of the condensate collected in the water collecting bottle 22 so as to clean the condensate in the water collecting bottle 22 in time.

[0057] In an exemplary embodiment, the dissolver 3 is arranged approximately horizontally, and the dissolver 3 gradually tilts upward from the first end to the second end, so that the condensed water at the first end of the dissolver 3 flows into the water collection device 2 under the action of its own weight.

[0058] Figure 2 A side view of the dissolver according to an embodiment of the utility model is schematically shown. Figure 3 A cross-sectional view of a dissolver according to an embodiment of the utility model is schematically shown.

[0059] In an exemplary embodiment, Figure 1 , Figure 2 and Figure 3As shown, the dissolver 3 includes a shell 31 and a plurality of adsorption layers 32. Both ends of the shell 31 are provided with flange structures. The first end of the shell 31 is connected to the three-way pipe 21 of the water collecting device 2 through the flange structure, and the second end of the shell 31 is connected to the analyzer 4 through the flange structure. The longitudinal section of the shell 31 is rectangular, which is defined herein. A plurality of adsorption layers 32 are located in the shell 31, and the adsorption layers 32 extend in the length direction of the dissolver 3. The shape of the adsorption layers 32 is the same as the shape of the cross section of the inner cavity of the shell 31, and are spaced apart in the height direction of the shell 31 to absorb volatile organic compounds in the atmospheric sample flowing through the dissolver 3.

[0060] In an exemplary embodiment, Figure 3 As shown, the dissolver 3 further includes a plurality of support layers 33 , which are spaced apart in the height direction of the shell 31 to install and support a plurality of adsorption layers 32 , and the support layers 33 and the adsorption layers 32 are alternately stacked.

[0061] Specifically, an inserting strip is arranged on the outer side of each supporting layer, and a slot matching the inserting strip is arranged on the inner wall of the shell, so that the supporting layer is installed in the shell through the inserting strip and the slot, which is convenient for disassembly and installation.

[0062] According to the pretreatment device of the organic carbon and inorganic carbon analyzer provided in this embodiment, during the process of collecting atmospheric samples, the atmospheric samples enter the sampling device 1, the sampling device 1 condenses the moisture in the atmospheric samples to form a condensate, and collects it into the water collection device 2, so that the moisture is separated from the atmospheric samples, thereby removing the moisture in the atmospheric samples, and then the atmospheric samples are transported to the dissolver 3, the dissolver 3 further absorbs the volatile organic compounds in the atmospheric samples, thereby reducing the moisture and volatile organic compounds in the atmospheric samples transported to the analyzer 4, effectively improving the accuracy of the analyzer 4 in analyzing and detecting the atmospheric samples, and reducing the degree of damage to the analyzer 4 caused by moisture.

[0063] The embodiments of the present invention are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present invention is defined by the attached claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A pre-treatment device for an organic carbon and inorganic carbon analyzer, characterized in that: include: A sampling device (1) is configured to collect an atmospheric sample and condense moisture in the atmospheric sample to form a condensate to remove moisture from the atmospheric sample; A water collection device (2) configured to transport the atmospheric sample and collect the condensate; as well as A dissolver (3), wherein a first end of the dissolver (3) is connected to the water collection device (2), and a second end of the dissolver (3) is connected to an analyzer (4), and is configured to receive the atmospheric sample output by the water collection device (2), absorb and remove volatile organic compounds in the atmospheric sample, and transport the volatile organic compounds to the analyzer (4).

2. The pre-processing device according to claim 1, characterized in that: The sampling device (1) comprises: A sampling tube (11), the atmospheric sample enters from a first end of the sampling tube (11), and the water collecting device (2) is installed at a second end of the sampling tube (11); and The temperature adjustment component (12) is installed on the tube wall of the sampling tube (11) and is configured to adjust the temperature of the sampling tube (11) so that the moisture in the atmospheric sample contacts the inner wall of the sampling tube (11) and condenses to form condensate.

3. The pre-processing device according to claim 2, characterized in that: The temperature adjustment component (12) comprises: A temperature sensor (121), disposed on the inner wall of the first end of the sampling tube (11), configured to detect the real-time temperature of the first end of the sampling tube (11); A temperature regulator (122) is disposed on the wall of the sampling tube (11) and is configured to increase or decrease the temperature of the sampling tube; and The controller (123) controls the temperature regulator (122) to increase the temperature so that the real-time temperature is adjusted to within the preset temperature range when the real-time temperature is lower than the preset temperature range of the controller (123), and controls the temperature regulator (122) to decrease the temperature so that the real-time temperature is adjusted to within the preset temperature range when the real-time temperature is higher than the preset temperature range.

4. The pre-processing device according to claim 3, characterized in that: The temperature regulator (122) includes a Peltier.

5. The pre-processing device according to claim 2, characterized in that: The outer wall of the sampling tube (11) is provided with a heat-insulating layer (5).

6. The pre-processing device according to claim 2, characterized in that: The water collecting device (2) comprises: a water collecting bottle (22) configured to collect the condensed liquid; and A three-way pipe (21) is connected to the second end of the sampling pipe (11), the water collecting bottle (22) and the first end of the dissolver (3), so that the atmospheric sample in the sampling pipe (11) flows through the three-way pipe (21) and is transported to the dissolver (3).

7. The pre-processing device according to claim 6, characterized in that: The water collecting bottle (22) is made of transparent material.

8. The pre-processing device according to any one of claims 1 to 7, characterized in that: The dissolver (3) is arranged approximately horizontally, and the dissolver (3) gradually tilts upward from the first end to the second end, so that the condensed water at the first end of the dissolver (3) flows into the water collection device (2) under the action of its own weight.

9. The pre-processing device according to any one of claims 1 to 7, characterized in that: The dissolver (3) comprises: a housing (31), wherein a first end of the housing (31) is in communication with the water collecting device (2), and a second end of the housing (31) is in communication with the analyzer (4); and A plurality of adsorption layers (32) are located in the shell (31) and are spaced apart in the height direction of the shell (31) to absorb volatile organic compounds in the atmospheric sample flowing through the dissolver (3).

10. The pre-processing device according to claim 9, characterized in that: The dissolver (3) further comprises a plurality of support layers (33), wherein the plurality of support layers (33) are spaced apart and distributed in the height direction of the shell (31) so as to install and support the plurality of adsorption layers (32), and the support layers (33) and the adsorption layers (32) are alternately stacked.

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