TW201546435A - Gas and aerosol compositions monitor and aerosol sampler - Google Patents

Abstract

An aerosol sampler includes a chamber and a vapor-generating unit. The chamber is formed with a washing section and a condensation expanding section. One end of the condensation expanding section is connected with one end of the washing section. One end of the chamber is formed with an aerosol inlet, which is contiguous to the washing section. The other end of the chamber is formed with an air-extracting port and a gathering port. The vapor-generating unit has a vapor nozzle. The vapor nozzle is extended into the washing section of the chamber and toward the aerosol inlet. The aerosol gathering efficiency therefore is enhanced. The present invention further provides a gas and aerosol compositions monitor.

Description

Gas and gas component monitoring device and gas sampler

The invention provides an on-line particle sampling gas and gas glue component monitoring device and a gas gel sampler.

Aerosol is a particle suspended in air with a particle size of less than 100μm. There are various kinds of aerosol particles with different particle sizes and different chemical compositions in the environment, which can affect human health, climate, visibility and quality of life to varying degrees. In recent years, studies have found that gas gels play an important role in our complex environment. These particles directly affect the earth's heat balance through absorption, scattering, and radiation. They can also indirectly affect a small number of substances in the atmosphere, causing ozone and other Chemical formation or destruction.

For the research of gas glue (also known as aerosol), many literatures have deep theoretical foundations and models. For the study of its properties, it is nothing more than actual sampling and telemetry, but it is limited by the change of gas gel with time and space. There are still many uncertain factors that cannot be known immediately, such as the distribution of gas gel, particle size and concentration. However, due to the size of the gas gel, it cannot be easily collected, but currently there is no effective collection method, so the efficiency of gas gel collection cannot be improved.

China Patent Licensing Publication No. CN101315314B discloses an "atmospheric aerosol trapping method and apparatus", characterized in that an electric heating rod is used to heat and generate steam in a continuous constant flow of pure water, which is in the aerosol hygroscopic growth chamber. With atmospheric airflow Occasionally, as the steam flow stays in the aerosol hygroscopic growth chamber, the aerosol absorbs and grows with the natural cooling effect, and the airflow enters the serpentine cooler with the hygroscopically grown aerosol, so that the hot steam flow is cooled. A solution is formed in which the aerosol is trapped into the solution, and the gas stream is brought into solution by condensation to achieve gas-liquid separation and aerosol collection in the aerosol impact collector. However, the above patents still cannot effectively improve the efficiency of gas gel collection.

In summary, the present inventors have felt that the above-mentioned defects can be improved, and the present invention has been put forward with great interest in designing and cooperating with the theory, and finally proposes a invention which is reasonable in design and effective in improving the above-mentioned defects.

The technical problem to be solved by the present invention is to provide a gas and gas glue component monitoring device and a gas gel sampler, which can improve the efficiency of gas gel collection.

In order to solve the above technical problem, the present invention provides a gas and gas gel component monitoring device, comprising: a gas gel sampler comprising a cavity and a vapor generating device, wherein a cavity and a condensation increasing zone are formed inside the cavity One end of the condensation increasing zone is connected to one end of the washing zone, and one end of the cavity is provided with a gas glue inlet, the gas glue inlet is adjacent to the washing zone, and the other end of the cavity is provided with an air suction port and a sample receiving port. The vapor generating device has a vapor nozzle extending into the washing zone of the cavity, the vapor nozzle facing the gas gel inlet; a filter; a gas-solid separator; a wetting mechanism, the filter, the filter A gas-solid separator and the wetting mechanism are coupled to the gas gel inlet; and an analytical instrument, the sample port being coupled to the analytical instrument.

In order to solve the above technical problem, the present invention further provides a gas gel sampler, comprising: a cavity body internally forming a washing zone and a condensation increasing zone, one end of the condensation increasing zone being connected to one end of the washing zone, One end of the cavity is provided with a gas glue inlet, the gas glue inlet is adjacent to the washing zone, the other end of the cavity is provided with an air suction port and a sample receiving port; and a steam generating device has a steam nozzle, and the steam nozzle extends into the cavity In the washing zone of the chamber, the vapor nozzle faces the gas gel inlet.

The present invention has at least the following advantages: the vapor nozzle of the vapor generating device of the present invention faces the gas gel inlet of the cavity, so that the gas gel to be collected is mixed with the vapor, and the gas gel input from the gas gel inlet can be ejected from the vapor nozzle. The vapor collides, because the vapor has a large specific surface area, and the flow direction of the gas gel is opposite to that of the vapor, so the gas collection efficiency can be improved.

The invention can utilize the refrigeration device to cool the cavity body, the gas glue and the vapor pass through the condensation increasing zone to increase the mass and the volume, and then the gas glue is supplemented by the inertial impact mode, so that the two-stage collecting gas glue can be formed, and Improve the efficiency of gas gel collection.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

100‧‧‧ gas gel sampler

1‧‧‧ cavity

11‧‧‧First tube

12‧‧‧Second body

13‧‧‧ gas glue entrance

14‧‧‧Connecting tube

15‧‧‧First collection port

16‧‧‧Second collection

17‧‧‧ Third collection port

18‧‧‧Exhaust port

Label entry in 19‧‧

1A‧‧·washing area

1B‧‧‧Condensation increasing zone

1C‧‧‧ openings

1D‧‧‧impact board

L‧‧‧ center line

Θ‧‧‧ angle

3‧‧‧Vapor generating device

31‧‧‧Vapor nozzle

5‧‧‧ Refrigeration device

7‧‧‧Support frame

101‧‧‧ sampling port

102‧‧‧ Filter

103‧‧‧ gas-solid separator

104‧‧‧ Wetting mechanism

105‧‧‧First defoamer

106‧‧‧Gas autosampler pump

107‧‧‧Catalyst Chromatograph

108‧‧‧Anion Chromatograph

109‧‧‧Second defoamer

110‧‧‧Air glue automatic sample pump

111‧‧‧Air pump

Figure 1 is a perspective view of a gas sampler of the present invention.

2 is a cross-sectional view of the gas gel sampler of the present invention.

Fig. 3 is an enlarged cross-sectional view showing a portion A of Fig. 2;

4 is a schematic view of a gas and gas gel component monitoring device of the present invention.

[First Embodiment]

Referring to FIG. 1 to FIG. 3 , the present invention provides a gas sampler 100 comprising a cavity 1 and a vapor generating device 3 . The cavity 1 is a hollow body, which can adopt a multi-stage combination or an integrated design. This embodiment discloses that the cavity 1 adopts a multi-stage combination design, that is, the cavity 1 can be a first pipe body 11 and a The second tube 12 and the like are combined, and the chamber 1 is preferably, but not limited to, a circular tube body, and may be a tube body of other shapes.

A cavity 1A and a condensation-increasing zone 1B are sequentially formed inside the cavity 1, and one end of the condensation-increasing zone 1B is connected to one end of the washing zone 1A. Condensation increasing zone 1B The other end is tapered, that is, the inner diameter of the other end of the condensation increasing region 1B is decreased from one end of the washing zone 1A toward the end farther from the washing zone 1A, and the angle θ of the taper of the other end of the condensation increasing zone 1B may be Between 10 and 80 degrees, preferably 50 degrees, but not limited. The other end of the condensation increasing region 1B is formed with an opening 1C having an inner diameter of 1 mm to 3 mm, preferably 2 mm, but is not limited. The other end of the condensation increasing region 1B may be provided with an impact plate 1D which faces the impact plate 1D, which may be a glass plate or other plate.

One end of the cavity 1 is provided with a gas inlet 13 which is adjacent to the washing zone 1A. The gas inlet 13 can be connected with a connecting pipe 14, which can be a bent pipe or other shaped pipe body. In order to introduce the gas glue into the gas sampler 100 by means of the connecting pipe 14.

The other end of the cavity 1 is provided with a sample receiving port 15, 16, 17, which is adjacent to the other end of the condensation increasing area 1B, and can be respectively defined as a first receiving port 15, The second sample collection port 16 and the third sample collection port 17 are connected to the interior of the cavity 1 by the first sample collection port 15, the second sample collection port 16 and the third sample receiving port 17. The cavity 1 is disposed obliquely, that is, the cavity 1 is descended from the end provided with the gas inlet 13 to the other end to facilitate the discharge of the liquefied gas inside the cavity 1. The inclination angle of the cavity 1 is Between 5 and 90 degrees, 20 degrees is preferred. The cavity 1 can be supported by a support frame 7 or by other forms of support mechanisms to form an inclined arrangement, the configuration of which is not limited.

The other end of the cavity 1 is provided with an air suction port 18, and the air suction port 18 is connected to the interior of the cavity 1. The air suction port 18 can be connected to an air pump 111 (shown in FIG. 4) for pumping the cavity. The inner gas gel flows from the gas gel inlet 13 toward the suction port 18. The other end of the cavity 1 may further be provided with an internal inlet 19 for injecting an internal standard such as lithium bromide (as shown in Fig. 4). The internal standard method of the chromatograph is to add the standard sample of the known molar concentration to the sample and mix it with the liquefied gas glue, and calculate the actual molar concentration by the chromatograph, thereby estimating the actual sample amount of the liquefied gas gel. .

The vapor generating device 3 can be connected to the cavity 1, the configuration of the vapor generating device 3 It is not limited, for example, an electric heating rod can be used to heat pure water to generate steam. The vapor generating device 3 has a vapor nozzle 31 which extends into the washing zone 1A of the chamber 1, preferably extending to the center of the washing zone 1A, and the steam nozzle 31 faces the gas inlet 13. The vapor nozzle 31 preferably extends to the center of the washing zone 1A and is opposite to the center of the gas-filled inlet 13, that is, the vapor nozzle 31 can be located on the center line L of the washing zone 1A and the gas-filled inlet 13. The gas glue input from the gas inlet 13 can collide with the vapor sprayed by the steam nozzle 31, and the gas aerogel and vapor of the larger aerodynamic particle diameter form a liquefied gas gel (collection liquid) due to impact and direct interception. This is the gas gel collected in the first stage, and the liquefied gas gel can flow along the inner wall of the cavity 1 to the first sample receiving port 15. The vapor generated by the vapor generating device 3, in addition to being used to wash the underlying gas, can also provide a humid environment inside the chamber 1.

The outer wall of the cavity 1 corresponding to the position of the condensation increasing zone 1B can be further provided with a uniform cooling device 5, the cold end of which contacts the outer wall of the cavity 1, so that the cooling device 5 can be used to cool the cavity 1. In the first stage, the gas particles with a small aerodynamic particle size are not collected, and the remaining vapor is absorbed. The gas gel and the vapor pass through the condensation increasing zone 1B. The temperature is drastically reduced to reach a supersaturated humid environment, and the gas gel is caused by moisture absorption. The mass and the volume increase, and the rear end uses the inertial impact method to make the increased gas glue hit the impact plate 1D, and the gas glue is added. This is the gas gel collected in the second stage, and the gas glue can flow to the first stage. The second sample port 16 and the third sample port 17 are provided.

[Second embodiment]

Referring to FIG. 4, the present invention further provides a gas and gas glue component monitoring device, comprising the above gas glue sampler 100, the gas glue sampler 100 (please refer to FIG. 1 to FIG. 3). The connecting tube 14 can be connected to the sampling port 101, the filter 102, the gas-solid separator 103 and the wetting mechanism 104, that is, the filter 102, the gas-solid separator 103 and the wetting mechanism 104 are connected to the gas gel inlet 13. The sampling port 101 can be various types of sampling port devices or omitted. The filter 102 can be a cyclone centrifugal filter or other type of filter. The gas-solid separator 103 can be a wet concentric tube gas-solid separator, and the absorption liquid can be injected from above and flow through the separator. The inner and outer tubes, the gas and the gas glue pass through the gap between the inner and outer tubes, and the ions of the easily soluble water in the gas are absorbed into the absorption liquid of the inner and outer tubes and are carried out by the diffusion principle. The gas-solid separator 103 is connected to a first defoamer 105. The first defoamer 105 is connected to an analytical instrument by a gas auto-injection pump 106. The analytical instrument can be an ion chromatograph or other type. An analytical instrument, which in this embodiment is an ion chromatograph (which may include a cation chromatograph 107 and an anion chromatograph 108). The filter 102 can filter out the gas gel (fine particles) having aerodynamic particle diameter of 2.5 μm or more, and then pass the gas stream through the gas-solid separator 103 to adsorb the soluble gas, and then pass the collected water sample through the first defoamer. After 105 defoaming filtration, an ion chromatograph was introduced to analyze the gas ion component dissolved in water.

After the gas gel removal gas is disturbed, it passes through the wetting mechanism 104 and is then sent to the gas gel sampler 100. The sample receiving ports 15, 16, 17 are connected to a second defoamer 109, and the second defoamer 109 passes A gas-gel autosampler pump 110 is coupled to an ion chromatograph (which may include a cation chromatograph 107 and an anion chromatograph 108). After being collected in the first stage and the second stage, the gas gel can be transported to the second defoamer 109 through the sampling ports 15, 16, 17 and defoamed and filtered by the second defoamer 109, and then introduced. An ion chromatograph is used to analyze the composition of the gas gel ions dissolved in water.

The vapor nozzle of the steam generating device of the present invention faces the gas gel inlet of the cavity, so that the gas gel to be collected is mixed with the vapor, and the gas gel input from the gas gel inlet can collide with the vapor sprayed by the steam nozzle, because the steam has a relatively high The large specific surface area, and the flow direction of the gas gel and the vapor are exactly opposite, so the gas collection efficiency can be improved.

The invention further utilizes the cooling device to cool the cavity, the gas glue and the vapor pass through the condensation increasing zone to increase the mass and the volume, and then the gas glue is supplemented by the inertial impact mode, so that the two-stage collecting gas glue can be formed, and Can improve the efficiency of gas collection. The collection efficiency of the gas glue of the invention: the collection efficiency of the gas gel with a pneumatic particle diameter of 1 μm or more can reach more than 99%.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalents of the present invention and the equivalents of the drawings are all included in the present invention. Within the scope of protection, it is given to Chen Ming.

100‧‧‧ gas gel sampler

1‧‧‧ cavity

11‧‧‧First tube

12‧‧‧Second body

13‧‧‧ gas glue entrance

14‧‧‧Connecting tube

15‧‧‧First collection port

16‧‧‧Second collection

17‧‧‧ Third collection port

18‧‧‧Exhaust port

Label entry in 19‧‧

1A‧‧·washing area

1B‧‧‧Condensation increasing zone

1C‧‧‧ openings

1D‧‧‧impact board

L‧‧‧ center line

3‧‧‧Vapor generating device

31‧‧‧Vapor nozzle

7‧‧‧Support frame

Claims (10)

A gas and gas component monitoring device comprises: a gas sampler comprising a cavity and a vapor generating device, wherein a cavity and a condensation increasing zone are formed inside the cavity, and one end of the condensation increasing zone is connected to One end of the washing zone, one end of the cavity is provided with a gas glue inlet, the gas glue inlet is adjacent to the washing zone, and the other end of the cavity is provided with an air suction port and a sample receiving port; the steam generating device has a steam nozzle. The vapor nozzle extends into the washing zone of the cavity, the steam nozzle faces the gas gel inlet; a filter; a gas-solid separator; a wetting mechanism, the filter, the gas-solid separator and the wetting mechanism are connected At the gas gel inlet; and an analytical instrument, the sample port is connected to the analytical instrument. The gas and gas component monitoring device according to claim 1, wherein the gas-solid separator is connected to a first defoamer, and the first defoamer is connected to the analytical instrument through a gas auto-injection pump. The sample receiving port is connected to a second defoamer, and the second defoamer is connected to the analytical instrument through a gas gel automatic sample pump. The gas and gas gel component monitoring device of claim 1, wherein the vapor nozzle extends to a center of the washing zone, and the vapor nozzle is opposite to a center of the gas gel inlet. The gas and gas component monitoring device according to claim 1, wherein the outer wall of the chamber is provided with a uniform cooling device corresponding to the position of the condensation increasing region, and the other end of the condensation increasing region is tapered and provided with an opening. The other end of the condensation increasing zone is provided with an impact plate facing the impact plate. The utility model relates to a gas sampler, comprising: a cavity body internally forming a washing zone and a condensation increasing zone, one end of the condensation increasing zone is connected to one end of the washing zone, and one end of the cavity body is provided with a gas glue inlet, The gas gel inlet is adjacent to the washing zone, and the other end of the cavity is provided with a suction port and a sample And a vapor generating device having a vapor nozzle extending into the washing zone of the cavity, the vapor nozzle facing the gas gel inlet. The gas sampler of claim 5, wherein the cavity is disposed obliquely, and the cavity is descended from the end provided with the gas inlet to the other end, and the cavity is inclined at an angle of 5 to 90 degrees. between. The gas sampler of claim 5, wherein the vapor nozzle extends to a center of the wash zone and the vapor nozzle is opposite the center of the gas gel inlet. The gas sampler of claim 5, wherein the outer wall of the chamber is provided with a uniform cooling device corresponding to the position of the condensation increasing zone. The gas sampler of claim 5, wherein the other end of the condensation increasing zone is tapered and provided with an opening, and the other end of the condensation increasing zone is provided with an impact plate facing the impact plate. The gas sampler of claim 9, wherein the angle of taper at the other end of the condensation increasing zone is between 10 and 80 degrees.