Study on methanol synthesis from coal-based syngas

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The intrinsic kinetic models of the Langmuir-Hinshelwood type were investi-gated in terms of the reaction rates of CO hydrogenation and CO2 hydrogenation in the form of reactant fugacity.The parameters were estimated by the Universal Global Optimi-zation using the Marquardt method.Residual error distribution and statistic tests show that the intrinsic kinetic models are reliable and acceptable.The mathematic model of a com-bined converter formed by gas-cooled and water-cooled reactor was developed and the gas-cooled reactor and the water-cooled reactor were characterized with one-dimensional mathematic model.The distributions of temperature and concentration in the catalytic bed of the gas-cooled reactor and the water-cooled reactor in a combined converter with a yield of 1.2 Mt/a were simulated.The parallel cross linking pore model was used to de-scribe the transfer process of multi-component diffusion system in the catalyst.The calcu-lated value computed by the internal diffusion efficiency factor calculation model estab-lished for methanol synthesis catalyst fit the experimental value very well.
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