Question

what is the current industrial process for butadiene production in Asia??

Answer 1

Most of the Butadiene production is carried out mainly as a byproduct of Ethylene production from steam crackers in Asian industries:

Most of the butadiene (>90%) is produced from steam crackers as a by product of ethylene production. Stream having four carbon atoms is separated from crude in the steam cracking process. It is then fed to butadiene extracttion units.

In extraction units,butadiene is separated from the other C4s stream using extractive distillation technology. Thus composition of feed to the steam cracking unit plays a very important role in determining the amount of C4s produced in steam cracking.If feed is Heavier containing streams like naphtha will result into higher C4 yield. Higher C4 yield will result into higher butadiene prduction

Steam Crackers having lighter feeds will produce lower quantities of C4s stream and will have less production of butadiene.