Process and apparatus for production and separation of alcohols and oligomerization of hydrocarbon feedstock

A process for simultaneous production of alcohols and oligomers from an olefinic C4 feedstock, the process comprising steps of:

• passing the olefinic C4 feedstock through a de-metallization reaction zone, wherein the de-metallization reaction zone removes at least one impurity component from the olefinic C4 feedstock;
• dividing the olefinic C4 feedstock as obtained from the de-metallization reaction zone into a first stream, and a second stream;
• passing the first stream through a hydration reaction zone, wherein an acidic catalyst and water hydrate the first stream to form a hydration product, wherein the hydration product comprises heavier products comprising a mixture of a plurality of alcohol compounds, and a plurality of oligomer products;
• routing the hydration product into an alcohol recovery column, wherein the alcohol recovery column separates the heavier products from an unconverted olefinic C4 feedstock;
• passing the second stream and a precise quantity of recovered alcohol through an oligomerization reaction zone having an ion exchange resin catalyst, wherein the second stream and the precise quantity of recovered alcohol passes through a mixer before going into the oligomerization reaction zone;
• and
• routing of an oligomerization product stream into an oligomer product recovery column, wherein the oligomerization product stream passes through a pressure reduction zone before going into the oligomer product recovery column.