RESEARCH ON VOCs EMISSION CHARACTERISTICS AND OZONE FORMATION POTENTIAL OF TYPICAL PETROCHEMICAL PLANTS

FEI Bo; BU Mengya; ZHANG Gangfeng

doi:10.13205/j.hjgc.202305023

Volume 41 Issue 5

May 2023

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FEI Bo, BU Mengya, ZHANG Gangfeng. RESEARCH ON VOCs EMISSION CHARACTERISTICS AND OZONE FORMATION POTENTIAL OF TYPICAL PETROCHEMICAL PLANTS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 172-178. doi: 10.13205/j.hjgc.202305023

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FEI Bo, BU Mengya, ZHANG Gangfeng. RESEARCH ON VOCs EMISSION CHARACTERISTICS AND OZONE FORMATION POTENTIAL OF TYPICAL PETROCHEMICAL PLANTS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 172-178. doi: 10.13205/j.hjgc.202305023

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RESEARCH ON VOCs EMISSION CHARACTERISTICS AND OZONE FORMATION POTENTIAL OF TYPICAL PETROCHEMICAL PLANTS

doi: 10.13205/j.hjgc.202305023

Shanghai Academy of Environmental Sciences, Shanghai 200233, China

Received Date: 2021-10-15

Abstract

Abstract

Focusing on the aromatics, olefins and refining production areas of a petrochemical enterprise, a study was conducted to characterize VOCs emission from four production units with a high number of active VOCs components: aromatics continuous reforming, aromatics hydrogen production, olefins catalytic cracking and refining normal-reduced pressure distillation. The VOCs emission from the disorganized fugitive links of the units was collected using Suma canisters, and the 106 VOCs components were analyzed qualitatively and quantitatively by gas chromatography-mass spectrometry (GC-MS), and the maximum incremental reactivity (MIR) of VOCs was used to calculate the contribution of VOCs emissions from each unit to the atmospheric O₃ generation. The results showed that alkanes were the featured VOCs components in the four units, with the mass fraction share ranging from 42.17% to 93.57%. The mass fraction of halogenated hydrocarbons in the olefin cracking unit accounted for 30.08%, and the mass fraction of aromatic hydrocarbons in the normal-reduced pressure distillation unit accounted for 27.83%; propane, ethane, 1,2-dichloroethane and n-heptane were the featured species of VOCs emission from petrochemical industry enterprises; the OFP of the four units ranged from 0.49 to 30.05 mg/m³, in a descending order of refining normal reduced-pressure distillation unit (30.05 mg/m³)>aromatics hydrogen production unit (4.21 mg/m³)>aromatics continuous reforming unit (2.57 mg/m³)>olefin cracking unit (0.49 mg/m³); the contribution of the top 20 species to OFP ranged from 87.89% to 94.47%, with isobutane, propane, n-butane and p,m-xylene as the key active species in the industry. The study showed that the VOCs emitted from different production units of petrochemicals had different complex components and significant differences in their contribution to ozone generation. It is recommended to develop targeted VOCs emission reduction strategies for industry enterprises based on the screened key reactive components.
- petrochemical,
- volatile organic compounds,
- emission characteristics,
- ozone formation potential

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