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Copyright of Chemical Engineering of Oil & Gas / Shi You Yu Tian Ran Qi Hua Gong is the property of PetroChina Southwest Oil & Gas Field Company and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Mercury will enter into each process mass flow unit during natural gas treatment . Mercury would not only be volatile to the environment and harm to the health of the staff, but also cause mercury corrosion and noble metal catalyst poisoning in the product ion equipments. In this paper, VMGSim simulation software was used to simulate and analyze the whole natural gas processing and it was found that mercury in natural gas mainly entered into ethylene glycol rich solution, wastewater from the top of regeneration tower, and stable condensate oil. which had guiding significance for mercury pollution control in subsequent treatment plant. Through analyzing the composition of feed gas, feed temperature of cryogenic separator, and the content of ethylene glycol, it was found that the increase of light hydrocarbon in feed gas was beneficial to the absorption of mercury by ethylene glycol, and the decrease of the mass fraction of ethylene glycol would promote the desorption of mercury by ethylene glycol rich liquid. From the perspective of environmental protection and safety, the prevention and control measures of mercury pollution in the main units of the whole natural gas processing plant were put forward. [ABSTRACT FROM AUTHOR]