Method for removing moisture in gases by a Nafion tube

A moisture and gas technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problem that desiccant water removal cannot be used for corrosive gas analysis, water-soluble analyte loss, analyzer acid mist corrosion and other problems, to achieve the effect of good water removal performance, low cost and extended service life

Inactive Publication Date: 2009-09-09
陈明
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common problems in the use of electronic refrigeration and compressor refrigeration methods are: 1. Pipelines and instruments are blocked by water or particles; 2. Loss of water-soluble analytes; 3. Analyzers are corroded by acid mist; 4. In order to achieve ideal The water removal effect is too low and the dew point temperature will block the pipeline due to freezing
Desiccant water removal cannot be used in corrosive gas analysis and requires frequent maintenance

Method used

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  • Method for removing moisture in gases by a Nafion tube
  • Method for removing moisture in gases by a Nafion tube
  • Method for removing moisture in gases by a Nafion tube

Examples

Experimental program
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Embodiment

[0034] as attached figure 1 The experimental structure and attached figure 2 The structure of the dryer is shown, and the experimental system is composed of a humidifier, a gas sampler 1, an air pump 4, an instrument wind generator 6, an air compressor, a Nafion tube 8, a filter, and a dew point meter. The working process is: the humidifier humidifies the air around the gas sampler 1, measures the surrounding temperature, enters the gas sampler 1 and is heated by the heating part 7 in the gas sampler 1, measures the dew point temperature at the outlet of the gas sampler 1, and passes through 5um The microporous filter 2 and the 0.2um microporous filter 3 filter, and then the air pump 4 inputs the sample body into the flow meter to measure and limit the flow. The process gas is then heated to maintain the temperature of the sampler. Finally, the treated gas enters the dryer 5 consisting of Nafion tubes 8 . The 16L / min air produced by the air compressor passes through the in...

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Abstract

The invention discloses a gas drying method, in particular to a method for removing moisture in gases by a Nafion tube. The method is characterized in that the moisture is absorbed by adopting the permeability of the Nafion tube on the moisture and flow velocity of different gases on both sides of the Nafion tube to finally realize the aim of removing the moisture in processed gases inside the Nafion tube. The method has the advantages of low cost, high moisture removal property, small volume and the like. The method can be applied to such industries as atmospheric environment monitoring, pollution resource on-line monitoring, various gases analysis and rapid emergency command vehicles, etc.

Description

technical field [0001] The invention relates to a gas drying method, in particular to a method for removing moisture in gas by using a Nafion tube. Background technique [0002] The gas sampling system is the most critical component in the online monitoring system of flue gas from fixed pollution sources, the atmospheric environment monitoring system, and the gas analyzer. The moisture contained in the treated gas will lead to inaccurate analysis data and even cause fatal damage to the analysis instrument. For example, in the field of infrared analysis, the moisture in the treated gas will interfere with the results of infrared analysis, resulting in inaccurate analysis data. In the analysis of water-soluble and corrosive gases, moisture can corrode the analytical instrument and cause fatal damage to the analytical instrument. [0003] Gas sampling systems at home and abroad mainly use electronic refrigeration, compressor refrigeration, desiccant and other methods in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/26
Inventor 杨斌黄安方军谢建立李文乐
Owner 陈明
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