Process to prepare propylene
AssigneeGasolfin B.V.
InventorRaymond Paul Fletcher
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Abstract
The invention is directed to a process to prepare propylene from a hydrocarbon feed comprising pentane by contacting the hydrocarbon feed with a heterogeneous cracking catalyst as present in one or more fixed beds thereby obtaining a cracked effluent. The heterogeneous catalyst comprises a matrix component and a molecular sieve comprising framework alumina, framework silica and a framework metal selected from the group of Zn, Fe, Ce, La, Y, Ga and/or Zr. Propylene is isolated from the cracked effluent.
Claims20
A process to prepare propylene from a hydrocarbon feed comprising pentane by contacting the hydrocarbon feed with a heterogeneous cracking catalyst as present in one or more fixed beds thereby obtaining a cracked effluent,
- wherein the heterogeneous catalyst comprises a matrix component and a molecular sieve of the MFI type comprising framework alumina, framework silica and framework Fe
- wherein the atomic ratio between the framework alumina and the framework Fe is between 1:0.05 and 1:0.5;
- wherein the heterogeneous catalyst comprises between 0.5 and 10 wt % P2O5;
- wherein propylene is isolated from the cracked effluent;
- and
- wherein the temperature in the one or more fixed beds is between 300 and 750° C. and the absolute pressure is between 0.1 and 10 MPa, and wherein the Weight Hourly Space Velocity (WHSV) is higher than and including 50/hour.
Dependencies are inferred from the claim text.