Producing Synthetic High-Octane Gasoline from Associated Petroleum Gas

IF 0.7 Q4 ENGINEERING, CHEMICAL

Catalysis in Industry Pub Date : 2025-05-23 DOI:10.1134/S2070050424700399

G. B. Narochnyi, A. N. Saliev, I. N. Zubkov, M. A. Timokhina, E. A. Bozhenko, A. V. Chernysheva, B. I. Kolobkov, A. P. Savost’yanov, R. E. Yakovenko

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Abstract

A way of producing high-octane gasoline from associated petroleum gas (APG) by combining APG aromatization with Fischer–Tropsch (FT) synthesis is proposed. APG aromatization is studied experimentally in a flow setup at a pressure of 0.1 MPa and temperatures of 450–600°C on ZnO/ZSM-5/Al₂O₃ catalyst. It is shown that the conversion of С₃₊ hydrocarbons is greatest in the 550–600°C range of temperatures to reach 22.7–27.8%, while the yield of aromatics is 8.8–10.9%. FT synthesis is studied on hybrid Co-Al₂O₃/SiO₂/ZSM-5/Al₂O₃ catalyst at a temperature of 250°C, a pressure of 1.0 MPa, and GHSV = 1000 h⁻¹. One liter of an experimental synthetic gasoline fraction is produced on a pilot setup to analyze its principal physicochemical properties and possible qualities of utilization. Calculations show that blending the gasoline fraction of FT synthesis with products of APG aromatization allows the octane number to be raised from 78.5 to 92.8 while the density grows from 710 to 778 kg/m³. The proposed engineering solutions can be used for converting APG into high-octane synthetic gasoline on modular Gas-to-Liquids (GTL) units.

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利用伴生气生产高辛烷值合成汽油

提出了将伴生气芳构化与费托合成相结合，以伴生气为原料生产高辛烷值汽油的方法。以ZnO/ZSM-5/Al2O3为催化剂，在压力为0.1 MPa、温度为450 ~ 600℃的流动条件下，对APG芳构化进行了实验研究。结果表明，在550 ~ 600℃温度范围内，С3+烃的转化率最高，达到22.7% ~ 27.8%，芳烃的收率为8.8 ~ 10.9%。研究了Co-Al2O3/SiO2/ZSM-5/Al2O3杂化催化剂在温度为250℃，压力为1.0 MPa, GHSV = 1000 h−1条件下的FT合成。在中试装置上生产了一升实验合成汽油馏分，以分析其主要的物理化学性质和可能的利用质量。计算表明，将FT合成汽油馏分与APG芳构化产物共混，辛烷值由78.5提高到92.8，密度由710 kg/m3提高到778 kg/m3。提出的工程解决方案可用于将APG转化为模块化气液制（GTL）装置上的高辛烷值合成汽油。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Catalysis in Industry ENGINEERING, CHEMICAL-

CiteScore

1.30

自引率

14.30%

发文量

期刊介绍： The journal covers the following topical areas: Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.