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CN-116173864-B - Gas capturing device

CN116173864BCN 116173864 BCN116173864 BCN 116173864BCN-116173864-B

Abstract

The invention provides a gas capturing device which comprises a first bottle body, a connecting pipeline and a gas diluter, wherein the first bottle body is provided with a first containing chamber, a first air inlet and a first air outlet which are communicated with the first containing chamber, one end of the connecting pipeline is communicated with the first air outlet, the gas diluter is arranged at the first air inlet and comprises a sample gas conveying pipeline and a protective gas conveying pipeline, the tail end of the protective gas conveying pipeline is positioned in the first containing chamber, and the tail end of the sample gas conveying pipeline is positioned in the protective gas conveying pipeline so that the sample gas conveyed by the sample gas conveying pipeline is coated and diluted by the protective gas conveyed by the protective gas conveying pipeline. The gas capturing device provided by the invention provides safe, efficient and accurate gas capturing.

Inventors

  • JIANG DEMING

Assignees

  • 乐盟科技股份有限公司

Dates

Publication Date
20260508
Application Date
20211224
Priority Date
20211129

Claims (9)

  1. 1. A gas capture device, the gas capture device comprising: the first bottle body is provided with a first containing chamber, a first air inlet and a first air outlet, wherein the first air inlet and the first air outlet are communicated with the first containing chamber, the caliber of the first air outlet is smaller than that of the first air inlet, and the first bottle body is airtight to the outside and high in pressure; a first container of the first bottle body is filled with the capturing solution; a connecting pipeline with one end communicated with the first air outlet and The gas diluter is arranged at the first air inlet and comprises a sample gas conveying pipeline and a protective gas conveying pipeline, the tail end of the protective gas conveying pipeline is positioned in the first accommodating chamber and below the horizontal plane of the capturing solution, and the tail end of the sample gas conveying pipeline is positioned in the protective gas conveying pipeline, so that the sample gas conveyed by the sample gas conveying pipeline is coated and diluted by the protective gas conveyed by the protective gas conveying pipeline.
  2. 2. The gas capture device of claim 1, wherein a distance from an end of the shielding gas delivery line to a bottom of the first vial is less than a distance from an end of the sample gas delivery line to a bottom of the first vial.
  3. 3. The gas capture device of claim 1, further comprising a second bottle in communication with the other end of the connecting line, wherein the first bottle has a volume that is less than the volume of the second bottle.
  4. 4. The gas capture device of claim 1, wherein the sample gas delivery line is nested within the shielding gas delivery line.
  5. 5. The gas capture device of claim 1, further comprising a barrier membrane member disposed in the first chamber, the barrier membrane member comprising a semi-permeable membrane layer and a nitric acid solution layer, the nitric acid solution layer coating the semi-permeable membrane layer, the barrier membrane member allowing only gas to pass through.
  6. 6. The gas capture device of claim 5, wherein the barrier membrane member comprises two semi-permeable membrane layers and a nitric acid solution layer disposed between the two semi-permeable membrane layers.
  7. 7. The gas capture device of claim 5, wherein the barrier film member further comprises at least one securing portion connected to an inner wall of the first bottle, the at least one securing portion having perforations, the shielding gas delivery conduit extending through the at least one perforation.
  8. 8. The gas capture device of claim 1, further comprising a thermostatic member surrounding an outside of the shielding gas delivery conduit and maintaining the shielding gas delivery conduit at a constant temperature.
  9. 9. The gas capture device of claim 8, wherein the thermostatic member is a ring-shaped electric heater.

Description

Gas capturing device Technical Field The invention relates to a gas capturing device, in particular to a safe, efficient and accurate gas capturing device. Background The industrial gas, either before or after the reaction, needs to be subjected to component measurement, in particular to confirm whether heavy metals or insoluble nanoparticles which pollute the environment are entrained in the gas. Therefore, a section of gas is required to be taken as a sample to capture heavy metals or nanoparticles contained therein, and then the components of the captured substances are measured by an inductively coupled plasma mass spectrometer (ICP-MS) or the like. However, the sample gas contains unknown components and may react with the capturing solution (e.g., hydrofluoric acid solution) so strongly that the measurement experiment is not safe. If the sample gas and the capture solution are mixed under reduced pressure for safety, the mixture may be insufficient, and the component to be captured may escape without reacting with the capture solution, resulting in inaccurate analysis. Disclosure of Invention The invention aims to solve various problems of the existing gas capturing device and provides a safe, efficient and accurate gas capturing device. In order to achieve the above and other objects, the present invention provides a gas capturing device, comprising a first bottle body having a first chamber, a first gas inlet and a first gas outlet communicating with the first chamber, a connecting pipe having one end communicating with the first gas outlet, and a gas diluter disposed at the first gas inlet, wherein the gas diluter comprises a sample gas conveying pipe and a shielding gas conveying pipe, the tail end of the shielding gas conveying pipe is located in the first chamber, and the tail end of the sample gas conveying pipe is located in the shielding gas conveying pipe, so that the sample gas conveyed by the sample gas conveying pipe is covered and diluted by the shielding gas conveyed by the shielding gas conveying pipe. Optionally, the distance from the end of the shielding gas delivery line to the bottom of the first bottle is smaller than the distance from the end of the sample gas delivery line to the bottom of the first bottle. Optionally, the bottle further comprises a second bottle body communicated with the other end of the connecting pipeline, and the volume of the first bottle body is smaller than that of the second bottle body. Optionally, the aperture of the first air outlet is smaller than the aperture of the first air inlet. Optionally, the sample gas delivery line is sleeved in the shielding gas delivery line. Optionally, the device further comprises a separation membrane member disposed in the first chamber, the separation membrane member comprises a semipermeable membrane layer and a nitric acid solution layer, the nitric acid solution layer is coated on the semipermeable membrane layer, and the separation membrane member only allows gas to pass through. Optionally, the isolating membrane member includes two semipermeable membrane layers and a nitric acid solution layer, and the nitric acid solution layer is disposed between the two semipermeable membrane layers. Optionally, the isolation film member further comprises at least one fixing portion, the at least one fixing portion is connected to the inner wall of the first bottle body, the at least one fixing portion is provided with a perforation, and the protection gas conveying pipeline penetrates through the perforation. Optionally, a thermostatic member is also included, which surrounds the outside of the shielding gas delivery line and keeps the shielding gas delivery line at a constant temperature. Optionally, the thermostatic element is a ring-shaped electric heater. Therefore, the gas capturing device of the invention uses the protective gas to coat and dilute the sample gas in advance, and then the sample gas is conveyed to the capturing solution for reaction, so that heavy metals or insoluble nano particles to be captured are retained in the capturing solution. Compared with the prior art, the gas capturing device is safer, the bottle body is airtight to the outside and high in pressure, and the efficiency and the accuracy are ensured while the safety is ensured. For a further understanding of the nature and the technical aspects of the present invention, reference should be made to the following detailed description of the invention and to the accompanying drawings, which are included to illustrate and not to limit the scope of the claims. Drawings FIG. 1 is a schematic diagram of a gas capture apparatus according to an embodiment of the present invention; FIG. 2A is a schematic perspective view of a separator member according to an embodiment of the present invention; FIG. 2B is a schematic view illustrating the assembly of a separator member according to an embodiment of the present invention; FIG. 3 is a schematic diagram of