VLIYANIE PARAMETROV PROCESSA PIROLIZA NA VYHOD DIENOVYH I VINILAROMATICHESKIH UGLEVODORODOV
Authors:
1.
Nauchno-tehnologicheskiy centr OAO «Nizhnekamskneftehim»
2.
Nauchno-tehnologicheskiy centr OAO «Nizhnekamskneftehim»
Type:
Article
eLocation:
Status:
Published
Received:
20.04.2023
Accepted:
01.08.2025
Published:
01.08.2025
Subject area:
UDC 665.642
Language:
Russian
Keywords:
жидкие продукты пиролиза, БТК-фракция, диеновые и винилароматические углеводороды, Liquid pyrolysis products, BTX, diene and vinyl aromatic hydrocarbons
Abstract (English):
Influence of parameters of the straight-run gasoline pyrolysis process on the yield of diene and vinyl aromatic hydrocarbons – main impurities in hydrogenation of liquid pyrolysis products – was studied. In industry, variations in pyrolysis temperature or contact time lead to significant redistribution of the components in liquid products; this impacts the operation of the hydrotreatment catalysts.It was found that the increase of pyrolysis temperature from 815 to 855 оС enhances the yield of cyclopentadiene, vinyl aromatic hydrocarbons, and decreases the yield of aliphatic diolefins and methyl cyclopentadiene isomers. Decrease of the contact time from 0.45 to 0.30 s leads to decrease of the content of aromatic, vinyl aromatic hydrocarbons, and cyclopentadiene, and to increase of aliphatic dienes, methyl cyclopentadiene isomers content. In industrial conditions variations in the pyrolysis process affect the operation of BTX hydrogenation catalysts and require timely corrections of process parameters of the benzene unit.
Influence of parameters of the straight-run gasoline pyrolysis process on the yield of diene and vinyl aromatic hydrocarbons – main impurities in hydrogenation of liquid pyrolysis products – was studied. In industry, variations in pyrolysis temperature or contact time lead to significant redistribution of the components in liquid products; this impacts the operation of the hydrotreatment catalysts.It was found that the increase of pyrolysis temperature from 815 to 855 оС enhances the yield of cyclopentadiene, vinyl aromatic hydrocarbons, and decreases the yield of aliphatic diolefins and methyl cyclopentadiene isomers. Decrease of the contact time from 0.45 to 0.30 s leads to decrease of the content of aromatic, vinyl aromatic hydrocarbons, and cyclopentadiene, and to increase of aliphatic dienes, methyl cyclopentadiene isomers content. In industrial conditions variations in the pyrolysis process affect the operation of BTX hydrogenation catalysts and require timely corrections of process parameters of the benzene unit.
Keywords:
жидкие продукты пиролиза, БТК-фракция, диеновые и винилароматические углеводороды, Liquid pyrolysis products, BTX, diene and vinyl aromatic hydrocarbons
жидкие продукты пиролиза, БТК-фракция, диеновые и винилароматические углеводороды, Liquid pyrolysis products, BTX, diene and vinyl aromatic hydrocarbons
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