Fire coal combustion source discharged carbonyl compound sampling device

Abstract

The invention discloses a fire coal combustion source discharged carbonyl compound sampling device. The sampling device comprises an air inlet part, a first-grade dilution system, a second-grade dilution system, a staying chamber and a sampling part. A combustion temperature can influence carbonyl compound gas-particle distribution and thus in order to simulate cooling, dilution and coagulation of flue gas discharged into air, the staying chamber is built and used after flue gas dilution. The sampling part adopts a self-made sampling tube coated with a pentafluorophenyl hydrazine (PFPH) Tenax-TA adsorbent to acquire a sample and utilizes a steam coating process and an introduction port thermal desorption analysis method so that solvent-caused influence on a detection result is avoided. The device is simple and easy, utilizes a dilution system to adjust a dilution ratio and is suitable for acquisition of other high-flue gas concentration gas substances.

Description

technical field [0001] The invention relates to a detection and analysis device for chemical components of flue gas, in particular to a dilution sampling device for high-concentration combustion flue gas, which is applied in the technical field of environmental monitoring instruments. Background technique [0002] my country's energy consumption and carbon emissions rank first in the world. With the rapid development of our country's economy, our country consumes about 200 million tons of coal every year, and the demand has been growing continuously. Coal has not only supported the industrial development of the West for hundreds of years, but also accounts for more than 70% of my country's energy consumption. Coal combustion is an important emission source of various pollutants and has been the subject of attention in recent years, including fine particulate matter (PM 2.5 ), organic carbon (OC), black carbon (BC), greenhouse gases (GHGs), and toxic volatile organic compou...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the various methods for collecting and analyzing carbonyl compounds require post-processing. Solvent elution is a commonly used treatment method in the post-processing process, and some solvents themselves will affect the detection results of carbonyl compounds.

The concentration of pollutants directly emitted by coal combustion is high, exceeding the detection range of most detectors, and the amount of pollutants emitted by coal combustion is affected by coal combustion characteristics (C, H, O, N, etc.), stove type and coal type. Therefore, different production areas and different furnace types have an impact on the pollutants emitted by coal combustion. The current collection and analysis of carbonyl compounds is not ideal enough.

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