Increasing carbon efficiency for DME production from wheat straw and renewable electricity – Analysis of 14 system layouts

Liquid fuels like dimethyl-ether (DME), produced from biomass and electricity are crucial for decarbonizing the shipping industry. In this work, production of DME wheat straw through gasification is presented. It was shown how process can be optimized by using 1) two-stage instead one-stage synthesis, 2) partial oxidation gas 3) a hydrogen quench high-temperature reverse water shift reactions. The investigation conducted stepwise introducing different steps, leading to investigating 14 plant layouts. This enabled systematic analysis influence steps looking at changes in carbon efficiency energy efficiency. all plants, bio-ash, which acts as soil amendment sink, were produced. 10 plants additionally high-quality bio-oil. showed that introduced measures increased plants. At same time, they net consumption. highest reached 57.5 %. A with 84.0 %.,while having consumption (45.2 MW input 50 (LHV)).