Selective Hydrogenation of C3-Fraction
A C3-fraction with high propylene content is generally recovered from steamcracker-plants. This fraction contains varying quantities of methyl acetylene ( propyne) and propadiene. These compounds have to be largely and selectively removed for further processing of the propylene.
The catalysts K-8327 and K-8330N produce „chemical grade“ propylene in a one-step hydrogenation. However, further separation of the green oil will yield „polymere-grade“ propylene.
Feedstock Requirements
HC-stream C4+- Hydrocarbons <0,5 mol %
(butanes, pentanes)
H2-stream purity H2 > 75 %
Typical Reaction Conditions
Catalyst load 15 kg Reactor feed/ l Kat.* h
Temperature reactor inlet 10 – 15 °C
Temperature reactor outlet 15 – 30 °C
Total pressure at 100 % H2 9 – 22,5 bar
