Alkyl aluminum catalyst deactivation with water and solids removal via filtration

An alkyl aluminum catalyst deactivation system comprising:

• an oligomerization reactor configured to contact an olefin monomer in a presence of an alkyl aluminum catalyst to form an oligomer product comprising an oligomer and the alkyl aluminum catalyst;
• a mixing vessel having a first inlet fluidly coupled to an outlet of the oligomerization reactor;
• a water stream fluidly coupled to the first inlet of the mixing vessel or to a second inlet of the mixing vessel, wherein the water stream comprises water and is configured to combine the water with the oligomer product to deactivate the alkyl aluminum catalyst, wherein the water is combined with the oligomer product at a location that is i) upstream of the first inlet of the mixing vessel or ii) in the mixing vessel;
• and
• a separator having an inlet coupled to an outlet of the mixing vessel, wherein the separator comprises a filter and is configured to filter a treated product received from the mixing vessel into a permeate stream and a retentate stream,
• wherein the treated product comprises the oligomer and aluminum-containing solids, wherein the permeate stream comprises the oligomer, wherein the retentate stream comprises the aluminum-containing solids.