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    Title: Analysis, Synthesis, and Design of a One-Step Dimethyl Ether Production via a Thermodynamic Approach
    Authors: Chen, Hsi-Jen;Fan, Chei-Wei;Yu, Chiou-Shia
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Clean energy;Process synthesis and design;Pinch technology;Energy savings;Dimethyl ether
    Date: 2013-01
    Issue Date: 2013-04-07 12:05:20 (UTC+8)
    Publisher: Amsterdam: Elsevier
    Abstract: In this work, we have developed a direct one-step process design on an oxygenate production, namely, dimethyl ether (DME). DME can be used as a cetane-number booster for diesel, in addition to being capable of a substitute for liquefied petroleum gas (LPG). In order to analyze the independent chemical reactions involved in the reactor, it is necessary to carry out a study of the chemical reaction stoichiometry. And with a specific syngas feed, the following reactions are found: (1) CO2 + H2 = H2O + CO, (2) CO + 2H2 = CH3OH, and (3) 3CO + 3H2 = (CH3)2O + CO2. To gain an insight into the reactor design, we have also utilized the concept of thermodynamics, including equilibrium-constant method and the minimization of Gibbs free energy. Additionally, we have also united the pinch technology with the base-case design for heat exchanger network synthesis in order to compare the energy consumption and capital costs of the process with/without heat integration. Two kinds of software were used in the research—Aspen Plus and SuperTarget. The former was used for the process synthesis, design, and simulation; the latter was used to carry out the pinch analysis and the synthesis of heat exchanger network.
    Relation: Applied Energy 101, pp.449–456
    DOI: dx.doi.org/10.1016/j.apenergy.2012.08.025
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文

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