Abstract
According to the emission characteristics of volatile organic compounds (VOCs) in the petrochemical plants of China, the storage stability of VOCs for two different bags, polyester aluminum (PEA) and polyvinyl fluoride (PVF), was investigated in this study by comparing the adsorption of gas samples. A series of experiments were carried out to study the impact of different factors of sampling in the petrochemical industry. The results showed that the C2∼C3 substances can be adsorbed by the Tedlar bag, and after being refilled with pure nitrogen, the VOCs adsorbed previously by the bag material can be released. The aromatic hydrocarbon VOCs with larger molecular weight had a relatively lower recovery rate than the smaller molecular weights. And the average recovery of PEA airbags was significantly better than that of PVF airbags for storing stationary VOCs in the refinery of China. More kinds of substances can be detected in the airbags that had been added with helium protective gas, and it had a higher recovery rate for both kinds of simple bags after 24 hours of storage time, which indicated that the airbags without protective gas had adsorbed these substances.
Highlights
With the development of the urbanization, the emission of the volatile organic compounds (VOCs) has increased greatly [1]. e components of the VOCs are complicated and have a variety of harmfulness to the environment and the health of the people. erefore, they had drawn public attention [2,3,4]
Researchers have focused on the study of VOCs from indoor gas, and there are few studies on VOCs emitted from refinery and petrochemistry [5, 6]. e petrochemical industry in China is the main emission source of VOCs, so the control of the VOCs in the petrochemical plant has been an urgent problem [7]. e key of the management and control is how to gather and analyze the components and the concentration of the VOCs
3.1.1. e Adaptability of the Two Type of Airbags. e chromatograms of the sample stored in the two airbags for 6 hours on the sampling day are shown in the Figure 2 and Table 2. ere were 16 substances that can be detected in the polyester aluminum (PEA) airbags by chromatography
Summary
With the development of the urbanization, the emission of the VOCs has increased greatly [1]. e components of the VOCs are complicated and have a variety of harmfulness to the environment and the health of the people. erefore, they had drawn public attention [2,3,4]. Whole-air sampling techniques include airbag sampling and tank sampling Each of these three methods has advantages and disadvantages. In view of the complex composition of stationary source volatile organic compounds (VOCs) and the high concentration of exhaust gas in each component of the refinery, the airbag method was used for sampling and analysis in this study [17, 18]. A series of research and analysis were carried out on the storage stability of VOCs, and the adsorption effect of airbags on gas samples during the experiment was studied. A series of research and analysis were carried out on the storage stability of VOCs, and the leakage loss and the adsorption of gas samples by the airbags during the experiment were studied. A series of research and analysis were carried out on the storage stability of VOCs, and the leakage loss and the adsorption of gas samples by the airbags during the experiment were studied. e purpose is to explore the differences between the two materials for the collection and storage of VOCs and to provide certain theoretical and technical support for the collection, accurate analysis, and governance research of stationary source volatile organic compounds in petrochemical enterprises
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
