Extractive Desulfurization of Light Vacuum Gas Oil in a Mini-Channel

IF 1.1 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2025-05-21 DOI:10.1134/S0965544124602461

O. N. Katasonova, M. E. Shnaider, T. А. Maryutina

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Abstract

The extractive desulfurization of the light vacuum gas oil has been investigated in a mini-channel reactor. The influence of operating and geometrical parameters of mini-channel on the flow pattern of two immiscible phases and efficiency of a sulfur extraction from a petroleum product has been studied. Using N-methyl-2-pyrrolidone as a solvent, it was possible to remove up to 50% of sulfur from light vacuum gas oil in a mini-channel within 20–50 s. The extraction efficiency of benzo- and dibenzothiophene homologues from petroleum feedstock was investigated in mini-channels of various internal diameter (0.5, 1, and 1.6 mm) and length (from 10 to 300 сm) within the range of total flow velocities of 0.01–0.1 m/s. Different flow configurations (slug, slug-drop, annular, wavy annular) were observed in the mini-channel. It was shown that the values of a sulfur extraction efficiency for the slug and annular flow regimes were close for the same retention time. However, compared to the slug flow, the volumetric mass transfer coefficient for the annular flow regime decreased significantly as the mini-channel length (retention time) increased. In total, 75% of sulfur compounds can be extracted from light vacuum gas oil by a multi-stage extraction in a mini-channel.

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轻真空瓦斯油在小通道内的萃取脱硫

在小通道反应器中研究了轻真空瓦斯油的萃取脱硫。研究了微通道的操作参数和几何参数对两相不混相流型和石油产品提硫效率的影响。以n -甲基-2-吡咯烷酮为溶剂，在20 - 50s的时间内，可以在微型通道中脱除轻真空瓦斯油中高达50%的硫。研究了不同内径（0.5、1和1.6 mm）和长度（10 ~ 300 μ m）、总流速为0.01 ~ 0.1 m/s的小通道对石油原料中苯并噻吩和二苯并噻吩同系物的萃取效率。在迷你通道中观察到不同的流动形态（段塞流、段塞流、环空流、波状环空流）。结果表明，在相同的停留时间内，段塞流和环空流的硫萃取效率值接近。然而，与段塞流相比，环空流的体积传质系数随着小通道长度（保留时间）的增加而显著降低。在小型通道中，通过多级萃取，可从轻真空瓦斯油中提取75%的含硫化合物。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.