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Device and method for adjusting the concentration of dinitrogen pentoxide

A technology of dinitrogen pentoxide and adjustment device, which is applied in the directions of dinitrogen pentoxide, chemical instruments and methods, nitrogen oxides/oxyacids, etc., and can solve problems such as difficult to store, difficult to store solids, and unstable gas.

Active Publication Date: 2022-08-05
HANGZHOU PUYU TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

due to NO 3 with N 2 o 5 The gas is unstable and difficult to store. Currently, there is no commercial calibration instrument on the market for the calibration of nitric acid radicals and dinitrogen pentoxide.
While the N prepared in the laboratory 2 o 5 Solids are difficult to preserve (need to be preserved at -80°C), and the use of N 2 purge N 2 o 5 solid to produce N 2 o 5 Unstable gas concentration

Method used

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  • Device and method for adjusting the concentration of dinitrogen pentoxide
  • Device and method for adjusting the concentration of dinitrogen pentoxide
  • Device and method for adjusting the concentration of dinitrogen pentoxide

Examples

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Embodiment 1

[0032] figure 1 A schematic diagram of the structure of the device for adjusting the concentration of dinitrogen pentoxide according to the embodiment of the present invention is given schematically, as figure 1 As shown, the device for adjusting the concentration of dinitrogen pentoxide includes:

[0033] a first gas source, the first gas source is used to provide a known concentration of nitric oxide gas;

[0034] a second gas source, the second gas source is used to provide ozone gas, such as obtaining ozone gas through a reaction at the application site;

[0035] a reaction unit, wherein the nitric oxide and ozone react in the reaction unit to generate dinitrogen pentoxide;

[0036] a capture and release unit, such as a cold trap, which is used to capture and release the nitrous oxide produced by the reaction;

[0037] a third gas source, the first gas provided by the third gas source is mixed with the dinitrogen pentoxide released by the capture and release unit;

[0...

Embodiment 2

[0065] An application example of the device and method for adjusting the concentration of dinitrogen pentoxide according to Embodiment 1 of the present invention.

[0066] In this application example, as figure 2 As shown, the first gas source uses a steel cylinder to provide a known concentration of nitrogen monoxide, and the concentration of nitrogen dioxide contained is C 3 ; The second gas source adopts an ozone production unit, such as CN200910154006.3; the third gas source is shared with the first gas source to provide nitric oxide; the fourth gas source provides synthetic air, which provides gas for the second gas source to prepare Ozone, as well as providing purge gas for the capture and release unit, is also used as a dilution gas; the capture and release unit uses a cold trap to enrich the nitrous pentoxide at low temperature and release it after heating; the released nitrous pentoxide Mixed with nitrogen monoxide provided by the third gas source, part of the mixed...

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Abstract

The present invention provides a device and method for adjusting the concentration of dinitrogen pentoxide. The device for adjusting the concentration of dinitrogen pentoxide comprises: a first gas source is used to provide nitrogen monoxide gas with a known concentration; a second gas source is used to provide Ozone gas; the nitrous oxide and ozone react in the reaction unit to generate nitrous pentoxide; the capture and release unit is used to capture and release the nitrous pentoxide generated by the reaction; the first gas provided by the third gas source Mixed with the nitrous oxide released by the capture and release unit; the temperature control unit is used to adjust the temperature of the capture and release unit T1 , and adjust the temperature of the mixture of released dinitrogen pentoxide and the first gas T2 ; The fourth gas source provides diluent gas for diluting C Dilute the mixture. The invention has the advantages of automation, good stability and the like.

Description

technical field [0001] The invention relates to the generation of standard gas, in particular to a device and method for adjusting the concentration of dinitrogen pentoxide. Background technique [0002] Nitrate radicals (NO 3 ) is an important nocturnal atmospheric oxidant for the ambient atmosphere. Nitrogen pentoxide (N 2 O 5 ) affected the formation of nitrate particles and the activation of chlorine free radicals at night. The research on nitrate groups and nitrogen pentoxide and the measurement of their environmental concentrations have become a research hotspot in the field of atmospheric chemistry in recent years. Due to NO 3 with N 2 O 5 The gas is not stable and difficult to store. At present, there is no commercial calibration instrument on the market for the calibration of nitrate radicals and dinitrogen pentoxide. while the N prepared in the laboratory 2 O 5 The solid is difficult to store (it needs to be stored at -80 °C), and the use of N 2 Purge N ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/20
CPCC01B21/206
Inventor 汪维昊刘永林刘盈智韩双来刘立鹏黄俊兴胡琼璞
Owner HANGZHOU PUYU TECH DEV CO LTD
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