Design and Evaluation of a Negative Sampling System For High VOC Concentration Emission

• Main Authors: Suyan-Rong Chen, 陳宣蓉
• Other Authors: Shi-Ping Liu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/qvfyst

碩士 === 輔仁大學 === 公共衛生學系碩士班 === 100 === Flare is an important emergency equipment for Petrochemical Industry. To avoid Industrial safety accident, the main purpose of it is to burn out the VOCs, acid gas and toxic gas when the process abnormal. However, because of the height and temperature reason, the burn out efficiency, emission concentration and the emission compound was hard to measuring. This study is to design a sampling system to sampled a simulation Flare, we will overcome the dead volume for long distant sampling and condensation of VOCs. Investigate the sampling efficiency and the analysis technique. Using a large negative pressure cylinder vacuumed twice of the dead volume will made sampling canisters get the representative samples. Wind speed around the Flare will influence the sampling efficiency, when the wind speed was fast, it only need stretched the sampling tube for one time length of the Flare diameter to the Flare. However, when the wind speed was slow, it need to stretched the sampling tube for four times of the Flare diameter. This study also shows the sampling canister should heated in oven for 5 minutes to get the representative sample.