Device for collecting trace dust in gas and method for detecting particle diameter and content of particles

A technology for collecting gas and dust particles, applied in measuring devices, particle and sedimentation analysis, sampling devices, etc., can solve problems such as dust content limitations, and achieve the effect of simple sampling methods
CN107907388APending Publication Date: 2018-04-13SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2018-04-13

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Abstract

The invention discloses a device for collecting trace dust in gas and a method for detecting the particle diameter and the content of particles. The device comprises a dust filter, a three-way valve,a gas volume flow rate meter and an injector, wherein the dust filter is connected with the gas volume flow meter and the injector through the three-way valve. The invention also discloses the methodfor collecting and detecting the particle diameter and the content of particles of the trace dust in the sample gas. The device and the method can be applicable to the conditions that the sample gas quantity is less than 100mL and the dust content is less than 5mg / L, and can also be applicable to the conditions that the gas quantity is greater than or equal to 100mL and the dust content is greaterthan or equal to 5mg / L; the problem that the detection of the trace dust in the gas is limited by the sample quantity and the dust content is solved.
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Description

technical field

[0001] The invention belongs to the technical field of natural gas hydrate development and detection, and in particular relates to a device for collecting micro dust in gas and a method for detecting particle size and content. Background technique

[0002] In nature, gas hydrates are mostly stored in sandy sedimentary layers, and the sand in sedimentary layers is mostly fine-grained sand and silt. Due to the small particle size of fine-grained sand and silt, it is very easy to gushe out with natural gas during the production of natural gas hydrate, and can flow with natural gas for a long time. In the process of transporting and using these natural gas carrying dust particles, it will reduce the service life of pipelines and related machines at least, and cause safety accidents at worst. Therefore, the dust content of the gas in the pipeline, that is, the detection of particle size and dust content is very important. In order to guide practical activities s...

Claims

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