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Dimethyl ether production process4/13/2023 ![]() The developed co-production process increases the methanol conversion ratio to 95%, with a reduced energy requirement. The utility loads of the co-production process are significantly lower than that of the single-production process. The results show that the exergy destruction of the co-production process is about 276% less than that of the single-production processes, and the exergy efficiencies in the developed co-production process are significantly improved. The exergy destruction and exergy efficiency were compared with those of the existing production processes. The exergy analysis of the co-production process and the existing process was carried out. The co-production process was simulated using Aspen Plus software, and the product purity was up to 99.9%. Based on this strategy, a novel process is developed to combine the production of DMC with that of dimethoxymethane (DMM) and dimethyl ether (DME). ![]() In this paper, the strategy of “reaction instead of separation” is proposed. In the production of dimethyl carbonate, methanol oxidative carbonylation has been studied, but the conversion ratio of dimethyl carbonate using this method is too low, and the subsequent separation requires a large amount of energy due to methanol and dimethyl carbonate being azeotrope. Dimethyl carbonate is an important green chemical that has been widely used in the chemical industry.
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