scholarly journals Moisture Removal Techniques for a Continuous Emission Monitoring System: A Review

Atmosphere ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 61
Author(s):  
Trieu-Vuong Dinh ◽  
Jo-Chun Kim

A continuous emission monitoring system (CEMS) is a well-known tool used to analyze the concentrations of air pollutants from stationary sources. In a CEMS, the presence of a high moisture level in a sample causes a loss of analytes due to artifact formation or absorption. This issue brings about a bias in the measurement data. Thus, moisture removal is an important pretreatment step. Condensation and permeation methods have been widely employed to remove moisture from the CEMS for gaseous compounds. In terms of particulate matter, dilution methods have been applied to reduce the moisture level in the gas stream. Therefore, condensation, permeation, and dilution methods are critically reviewed in this work. The removal efficiencies and recovery rates of analytes are discussed, as well as the advantages and disadvantages of each technique. Furthermore, the suitable applications of each technique are determined. Condensation methods have not been well documented so far, while permeation and dilution methods have been continuously studied. Many types of permeation materials have been developed. The limitations of each method have been overcome over the years. However, the most reliable technique has not yet been discovered.

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 55054-55062
Author(s):  
Yuan-Jian Yang ◽  
Xin-Yin Zhang ◽  
Zhi-Jie Zhao ◽  
Gui-Hua Wang ◽  
Yan-Jiang He ◽  
...  

2013 ◽  
Vol 341-342 ◽  
pp. 589-592
Author(s):  
Tie Jun Yang ◽  
Liang Ke ◽  
Wei Huang ◽  
Dao Zhu Hua ◽  
Chang Jin Pan ◽  
...  

The environmental pollution caused by coal-fired mercury emission has received worldwide attention, because of hazards for human health. Its significant to monitor mercury emission accurately in flue gas for mercury pollution control. In this paper, a detailed description of a mercury continuous emission monitoring system (Hg CEMS) built for the detection of mercury in flue gas is presented. The key performance parameters of the Hg CEMS were discussed in detail. The Hg CEMS was installed in a power plant to monitor mercury emission in flue gas continuously. Results from a series of laboratory performance tests and field application prove that the Hg CEMS is reliable and capable for mercury detection in flue gas. The Hg CEMS can meet the requirement of mercury monitoring in China well.


2013 ◽  
Vol 427-429 ◽  
pp. 1117-1120 ◽  
Author(s):  
Bing Shi ◽  
Zheng Hua Ma ◽  
Jian Ming Jiang ◽  
Suo Lin Duan

The system aims to collect reliable emission data in real time, provide the operator with real-time emission parameters, and guide the optimization of unit operation and control of pollutants in flue gas emissions. One kind of continuous emission monitoring system is designed based on PROFIBUS-DP protocol in power plant, the architecture of system is presented and the principle is described in detail.


Sign in / Sign up

Export Citation Format

Share Document