Process for the production of isoparaffins
AssigneeShell Oil Company
InventorSwan T. Sie
Life of this patent
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Abstract
A process for the production of isoparaffins having 4 to 7 carbon atoms per molecule from synthesis gas comprising the following steps: a) Synthesis of a heavy paraffins-containing hydrocarbon mixture over a Fischer-Tropsch catalyst; b) Conversion of at least part of the heavy paraffins-containing hydrocarbon mixture over a bi-functional isomerization/hydrocracking catalyst under isomerization/hydrocracking conditions; c) Separation of normal paraffins from at least part of the isoparaffins-containing product of step (b); d) Recycling at least part of the normal paraffins to step (b) and withdrawing C.sub.4 -C.sub.7 isoparaffins as a product from the process.
Claims18
A process for the production of isoparaffins having 4 to 7 carbon atoms per molecule from synthesis gas comprising the following steps:
- a) synthesizing a heavy paraffins-containing hydrocarbon mixture over a Fischer-Tropsch catalyst;
- b) converting at least part of the heavy paraffins-containing hydrocarbon mixture over a bi-functional isomerization/hydrocracking catalyst comprising at least one catalytically active metal chosen from the metals of Groups VIB, VIIB, VIII and mixtures thereof and a zeolite having a pore diameter from about 0.5 nanometers to about 1.0 nanometers and a silica:alumina ratio from about 5 to about 200 under isomerization/hydrocracking conditions;
- c) separating normal paraffins from at least part of the isoparaffins-containing product of step (b);
- and
- d) recycling at least part of the normal paraffins to step (b) and withdrawing C.sub.4 -C.sub.7 isoparaffins as a product from the process.
Dependencies are inferred from the claim text.