The light constituents flow upward to the catalyst zone, where the selective hydrogenation of butadiene is carried out together with desulfurization and some olefin saturation.
轻组分向上流至催化剂段，在那里丁二烯选择性加氢、脱硫和一些烯烃的饱和同时进行。
2
The biological desulfurization process has broad prospects due to low operating pressure and temperature as well as low production cost coupled with hydrogenation.