Journal Article•
Advances in desulfurization of FCC gasoline
TL;DR: A review of advances in FCC gasoline desulfurization technologies at home and abroad can be found in this paper, where the authors reviewed advances in the field of FCC gasoline and showed that reducing gasoline sulfur is considered to be an effective means for improving air quality.
Abstract: With the gradual strictness of the environmental laws,the requirement for the quality of gasoline is getting higherIt has resulted in a continuing world wide effort to reduce sulfur levels in gasolineThe reducing of gasoline sulfur is considered to be an effective means for improving air qualityThe desulfurization technology has become a key technology in various oil refinery enterprisesSulfur compounds in gasoline come mainly from FCC(Fluid Catalytic Cracking),so research and development of FCC gasoline desulfurization technology are very importantAt present,technologies of reducing sulfur content of FCC gasoline include FCC raw oil hydrodesulfurization,FCC gasoline hydrodesulfurization,solvent extraction desulfurization,catalytic cracking desulfurization,oxidative desulfurization,biodesulfurization,and adsorption desulfurizationThe paper reviews advances in FCC gasoline desulfurization technologies at home and abroad
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TL;DR: In this paper, a crosslinked polyethylene glycol (PEG) membrane was prepared for fluid catalytic cracking (FCC) gasoline desulfurization, and the effect of operation conditions including permeate pressure, feed temperature, feed flow rate and feed sulfur content level on the pervaporation performance was investigated.
85 citations
TL;DR: In this paper, a crosslinked PDMS/PEI composite membrane was prepared, in which asymmetric PEI membrane prepared with phase inversion method was acted as the microporous supporting layer in the flat-plate composite membrane.
60 citations
TL;DR: In this article, the effect of crosslinking on desulfurization mechanism was investigated by the study of typical gasoline components through the hydroxyethyl cellulose (HEC) membranes with different crosslink density.
40 citations
TL;DR: The swelling degree of and stableness of composite membrane during long-time operation were studied, which should be significant for practical application, and experiment results demonstrated that 80–100°°C of cross-linking temperature was more preferable for practicalApplication.
Abstract: Cross-linked polydimethylsiloxane (PDMS)–polyetherimide (PEI) composite membranes were prepared, in which asymmetric microporous PEI membrane prepared with phase inversion method was acted as the microporous supporting layer in the flat-plate composite membrane. Membrane characterization was conducted by Fourier transform infrared and scanning electronic microscopy analysis. The composite membranes were employed in pervaporation separation of n-heptane–thiophene mixtures. Effect of amount of PDMS, cross-linking temperature, amount of cross-linking agent, and cross-linking time on the separation efficiency of n-heptane–thiophene mixtures was investigated experimentally. Experiment results demonstrated that 80–100°°C of cross-linking temperature was more preferable for practical application, as the amount of cross-linking agent was up to 20 wt.%, and 25 wt.% of PDMS amount was more optimal as far as flux and sulfur enrichment factor were concerned. In addition, the swelling degree of and stableness of composite membrane during long-time operation were studied, which should be significant for practical application.
25 citations
TL;DR: In this article, crosslinked polyethylene glycol/polyetherimide (PEG/PEI) composite membranes were prepared, in which asymmetric PEI membrane prepared with phase inversion method acted as the microporous supporting layer in the flatplate composite membrane.
24 citations