| abstract |
The present disclosure is directed to 1,3-butadiene processes and systems. Such methods and systems can include dimerization of ethylene to produce a first product stream, including n-butene. The first product stream can be converted to a second product stream, including 1,3-butadiene, via oxidative dehydrogenation. The second product stream can be distilled via at least a first extractive distillation step to produce a 1,3-butadiene fraction and a raffinate product. At least a portion of the raffinate product can be recycled and/or fed to additional partitioning steps. |