Integrated process for production of gasoline

An integrated process for production of gasoline comprising:

• separating a naphtha feed in a naphtha splitter into a light stream comprising C6 and lighter boiling hydrocarbons, a C7 stream comprising C7 hydrocarbons, and a heavy stream comprising C8 and heavier hydrocarbons;
• isomerizing at least a portion of the light stream from the naphtha splitter in a C5-C6 isomerization zone at isomerization conditions to form a C5-C6 isomerization effluent;
• deisohexanizing at least a portion of the C5-C6 isomerization effluent in a deisohexanizer into at least a first stream comprising multi-branched C6 paraffins and a bottom stream comprising C6 cycloalkanes and heavies;
• isomerizing the C7 stream from the naphtha splitter in a first C7 isomerization zone at first isomerization conditions favoring the formation of multi-branched C7 paraffins and cyclohexanes to form a first C7 isomerization effluent;
• deisoheptanizing at least a portion of the first C7 isomerization effluent in a deisoheptanizer into at least an overhead stream comprising C6 paraffins, a sidecut stream comprising multi-branched C7 paraffins, and a bottom stream comprising n-C7 paraffins and C7 cycloalkanes;
• recycling the overhead stream from the deisoheptanizer to the C5-C6 isomerization zone;
• combining the bottom stream from the deisoheptanizer with the bottom stream from the deisohexanizer to form a combined stream;
• isomerizing the combined stream in a second C7 isomerization zone at second isomerization conditions favoring the formation of cyclopentanes over cyclohexanes to form a second C7 isomerization effluent;
• reforming the heavy stream from the naphtha splitter in a reforming zone under reforming conditions forming a reformate effluent;
• blending one or more of:
• the first stream from the deisohexanizer, the sidecut stream from the deisoheptanizer, the second C7 isomerization effluent, or the reformate effluent to form a gasoline blend.