Chemical equilibria in the process of etherification of light FCC gasoline with methanol

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie00043a037· OSTI ID:63158

Wyczesany, A ^[1]

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1. Univ. of Technology, Krakow (Poland). Inst. of Organic Chemistry and Technology

The paper presents the thermodynamic analysis of the process of etherification of light FCC gasoline with methanol. In the model presented, it is assumed that the chemical equilibria are reached only for the reactions of methanol with C{sub 4}-C{sub 7} olefins having the double bond on a tertiary carbon atom and the reactions of isomerization of olefins and ethers do not take place. Thermodynamic data which were not available from tables (the Gibbs free energies of formation of C{sub 7} olefins and C{sub 6}-C{sub 8} ethers) were calculated using two essentially different group contribution methods (the Benson method and the Yoneda method) to investigate the influence of the data obtained this way on the calculated equilibrium compositions. The nonideality of the liquid phase was described by the modified UNIFAC method and by the ASOG method. In both cases very similar equilibrium compositions were obtained. The parameters were specified for which the system begins to be in the simultaneous chemical and phase (vapor-liquid) equilibrium.

• Sponsoring Organization: USDOE
• OSTI ID: 63158
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 4 Vol. 34; ISSN 0888-5885; ISSN IECRED
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
10 SYNTHETIC FUELS
ALKENES
CALCULATION METHODS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
ETHERS
GASOLINE
MATHEMATICAL MODELS
METHANOL
MOLECULAR WEIGHT
SYNTHESIS
THERMODYNAMICS