Parallel comparisons between manual and automatic samplings in stack ducts

• Main Authors: SHU- TING LIU, 劉書廷
• Other Authors: Kang-Shin Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/8q3f2q

碩士 === 國立中山大學 === 環境工程研究所 === 103 === This study randomly selected three stationary sources, including urban garbage incinerators (A plant), electric arc furnace (B plant) and sintering furnace (C plant) to conduct automatic continuous sampling and analysis of flue gases and to compare the measurements with those using traditional manual sampling method. The results reveal that AMESA (automatic continuous monitoring equipment) is suitable for a long-period continuous monitoring and sampling (especially in C plant), but must consider the effect of penetration by adsorbent. The C plant had the highest penetration (11.0 ~ 12.6%), followed by B plant (0.42 ~ 0.99%) and A plant (0.12 ~ 0.45%) for a long-period automatic sampling. Due to the memory effect associated with particles in flue gases, the short automatic sampling device resulted in errors in analysis. For a short-period automatic sampling in A plant, the errors of PCDD / Fs OCDD concentration ratio declined from 59.5% to 42% for A plant, and declined from 81.9% by to 7.11 percent for C plant, which influenced mainly by the residuals of PCDD / Fs in pipelines. Results show that A plant is characterized by a high number of chlorine-based (OCDD and 1,2,3,4,6.7,8-HpCDD), while B plant is dominant with a low chlorine atoms mouth husband Nom class-based. Results also indicate that the adsorption of PCDD / Fs using AMESA is feasible, which not only saves the manpower in manual samplings, but also can simultaneously monitor a variety of hazardous air pollutants (PCDD / Fs, PCB and PBDEs).