초록 ▼

A process for the production of saturated oligomers by the oligomerization of light olefins to heavier olefins and the saturation of the heavy olefins is improved by the recycle of the heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins improves the selectivity of the oli

A process for the production of saturated oligomers by the oligomerization of light olefins to heavier olefins and the saturation of the heavy olefins is improved by the recycle of the heavy paraffins to the oligomerization zone. The recycle of the heavy paraffins improves the selectivity of the oligomerization for C.sub.8 paraffin products and reduces catalyst fouling. The reduced catalyst fouling can be used to operate the oligomerization zone at lower pressure and facilitate its integration with a dehydrogenation zone for the production of the light olefin stream.

대표청구항 ▼

[ What is claimed is:] [1.] A process for the production of saturated oligomers having a high octane rating, said process comprising:a) passing an oligomerization zone feed comprising C.sub.3 to C.sub.5 olefins and C.sub.3 to C.sub.5 paraffins at oligomerization conditions into contact with an oligo

[ What is claimed is:] [1.] A process for the production of saturated oligomers having a high octane rating, said process comprising:a) passing an oligomerization zone feed comprising C.sub.3 to C.sub.5 olefins and C.sub.3 to C.sub.5 paraffins at oligomerization conditions into contact with an oligomerization catalyst at oligomerization conditionsb) passing a recycle stream comprising paraffins having a carbon number of 8 to 12 into contact with said catalyst;c) recovering an oligomerization effluent comprising said paraffins and olefins having a carbon number of at least 7;d) passing at least a portion of the effluent from the oligomerization zone and a hydrogen containing stream into a saturation zone and contacting said oligomerization zone effluent and hydrogen with a saturation catalyst at saturation conditions to saturate olefins in said oligomerization effluent and recovering a saturation zone effluent stream;e) passing a portion of said saturation zone effluent stream comprising paraffinic hydrocarbons having 8 to 12 carbon atoms to said oligomerization zone as said recycle stream; and,f) recovering a portion of said saturation zone effluent stream comprising C.sub.8 and heavier paraffins.