초록 |
In the one-step syngas-to-DME process, syngas is converted in a single reactor to methanol and DME. This can reduce the cost in the syngas converstion part of the process, and possibly lead to a more economic process for DME production than the traditional two-step process, namely, methanol synthesis followed by methanol dehydration in two separate reactors. However the downstream separation for the one-step process could be costly because of the high volatility of two reaction products, DME and CO2. This study investigated several separartion processes and determined the most economical separation scheme for one-step dimethyl ether (DME) synthesis. |