The increment in the steam to biomass ratio increased the production of DME while the increment in oxygen to biomass ratio will cause reduction in DME production. The results showed that optimum H 2/CO ratio of 1.0 has been obtained when having an oxygen to biomass ratio (O/B) of 0.37 and steam to biomass ratio (S/B) of 0.23. Four parameters (temperature, pressure, steam/biomass ratio and oxygen/biomass ratio) have been studied on the H 2/CO ratio and DME yield. Empty Fruit Bunch (EFB) from palm wastes has been taken as the main feed stock for DME synthesis. In this paper, single step process of DME synthesis was simulated and investigated using the Aspen HYSYS. In Malaysia, due to the abundance of oil palm waste, it is a good candidate to be used as a feedstock for DME production. DME synthesis via single step is one of the promising methods that has been developed. Dimethyl Ether Production Technology (DME) Technology overview 1. Traditionally DME is produced from the petroleum based stock which involves two steps of synthesis (methanol synthesis from the syngas and DME synthesis from methanol). It was shown that the reactor performance is very sensitive to the H2:CO ratio in the feed gas. Dimethyl Ether (DME) has been getting numerous attention as it's potential as the second generation bio-fuel. Process schemes for single-step syngas-to-dimethyl ether (DME) were developed in two stages: (1) the performance of the syngas-to-DME reactor was optimized with respect to the feed gas composition and (2) the optimal reactor feed gas system was integrated with synthesis gas generators.
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