Production of Olefins
A process for converting a hydrocarbon feedstock to provide an effluent containing light olefins, the process comprising passing a hydrocarbon feedstock, the feedstock containing at least 25 wt % C 5+ paraffins, through a reactor containing a crystalline silicate catalyst to produce an effluent including propylene.
1 - 11 . (canceled)
12 . A process for converting a hydrocarbon feedstock to provide an effluent containing light olefins comprising:
passing a hydrocarbon feedstock containing at least 25 wt. % C 5+ paraffins through a reactor containing a crystalline silicate catalyst to produce an effluent including propylene.
13 . The process of claim 12 further comprising forming the hydrocarbon feedstock by adding at least one C 6+ paraffin to a C 4 + hydrocarbon feedstock cut comprising C 4+ paraffins.
14 . The process of claim 13 , wherein the at least one C 6+ paraffin comprises at least one C 6-20 linear paraffin.
15 . The process of claim 13 , wherein the hydrocarbon feedstock comprises from 1 to 80 wt. % of the at least one C 6+ paraffin and from 20 to 99 wt. % of the C 4+ hydrocarbon feedstock cut comprising C 4+ paraffins.
16 . The process of claim 12 wherein the hydrocarbon feedstock contains at least one C 4+ olefin.
17 . The process of claim 12 , wherein the crystalline silicate is an MFI-type or MEL-type crystalline silicate having a silicon/aluminium atomic ratio of from 120 to 1000.
18 . The process of claim 17 , wherein the MFI-type crystalline silicate catalyst comprises silicalite.
19 . The process of claim 12 , wherein the hydrocarbon feedstock is passed over the crystalline silicate at a reactor inlet temperature of from 500 to 600° C.
20 . The process of claim 12 , wherein the hydrocarbon feedstock is passed over the crystalline silicate at a liquid hourly space velocity (LHSV) of from 5 to 30 h 1 .
21 . The process of claim 12 , wherein the hydrocarbon feedstock is passed over the crystalline silicate at a pressure of from 0 to 2 barg.