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System for precisely measuring fine dust precursors

A precursor and material technology, which can be used in measurement devices, color/spectral property measurement, material analysis by optical means, etc., and can solve problems such as large constraints.

Pending Publication Date: 2019-05-07
KOREA INST OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as shown above, the thermoelectric element currently used has a very restrictive structure. According to the information we have, there is no example of using TDLAS as in the invention of the present application for outdoor optical measurement equipment.

Method used

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  • System for precisely measuring fine dust precursors
  • System for precisely measuring fine dust precursors
  • System for precisely measuring fine dust precursors

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Embodiment Construction

[0034]Hereinafter, description will be made with reference to the accompanying drawings of embodiments of the invention of the present application, but this is for easier understanding of the invention of the application, not to limit the scope of the invention of the application.

[0035] TDLAS is a metrology system using a tunable diode laser (Tunable Diode Laser), and has recently attracted attention as a real-time metrology system. figure 2 It is a typical configuration related to TDLAS, and the technical matters of TDLAS itself are described in Patent Documents 5, 6, and 7, and a detailed description thereof is omitted here.

[0036] The precision metering device for the concentration of the dust precursor substance includes: a laser part, which irradiates a laser beam; a measurement unit, which collects the gas for measurement and passes through the laser beam; a light detection part, which gathers the laser beam passing through the measurement unit; a processing part ,...

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Abstract

The present invention relates to a system for precisely measuring fine dust precursors, and relates to, among devices for measuring the concentrations of fine dust precursors NOx and SOx using the tunable diode laser absorption spectroscopy (TDLAS) method, a device capable of controlling the temperature of a measurement cell without vibration by using a thermoelectric element.

Description

technical field [0001] The invention of the present application relates to a precise measurement system for precursor substances of fine dust, and in detail relates to the use of TDLAS (TunableDiode Laser Absorption Spectroscopy: Tunable Diode Laser Absorption Spectroscopy) method to measure NO as a precursor substance of fine dust x , SO x concentration device. Also, it relates to a device for controlling the temperature of the TDLAS without vibration so that fine dust precursors can always be accurately measured outdoors. Background technique [0002] Fine dust and ultrafine dust are defined as particulate matter with particle diameters of 2.5 μm and 1.0 μm, respectively, defined by the WHO standard as 10 μm and 2.5 μm, respectively. [0003] Currently, one of the main causes of fine dust in Korea is the combustion of thermal power plants, and it is known that the fine dust generated by the combustion of thermal power plants accounts for 20 to 30% of the production of fi...

Claims

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Application Information

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IPC IPC(8): G01N21/39G01N21/03G01N33/00
CPCG01N21/03G01N21/39G01N33/00G01N21/0332G01N33/0037G01N33/0042G01N2021/399
Inventor 李昌烨柳美软苏城铉孟赛莲
Owner KOREA INST OF IND TECH
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