Heavy Alkylbenzene Production Through Oligomerization
AssigneeUop LLC
InventorsAndrea G. Bozzano, Jeffery C. Bricker, Bryan K. Glover
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Abstract
A process for producing heavy alkyl aromatics is presented. The process utilizes low molecular weight hydrocarbons for generating larger alkyl groups. The hydrocarbons can be generated from a variety of sources including Fischer-Tropsch liquids. The process includes oligomerization of low molecular weight olefins to larger olefins. The larger olefins are passed to an alkylation reactor to alkylate aromatic compounds.
Claims18
A process for producing heavy olefins, comprising:
- passing a hydrocarbon feedstock, comprising C4 to C6 olefins to an oligomerization reactor to generate a first stream comprising heavy olefins in the C15 to C36 range;
- and
- passing the first stream to a first separation unit to generate a product stream comprising C15 to C36 olefins, and a recycle stream having a reduced heavy olefin content.
An integrated process for producing detergent range alkylbenzenes from a hydrocarbon feedstock comprising C4 and C6 olefins and oxygenated compounds, the process comprising:
- contacting the feedstock with a liquid extractant comprising at least one of alcohol and diol having 1 to 3 carbon atoms per molecule and a minor amount of water under extraction conditions to provide a deoxygenated feedstock having a reduced concentration of oxygenated compounds and a spent extractant;
- regenerating at least a portion of the spent extractant to provide at least a portion of the liquid extractant;
- reacting at least a portion of the C4 and C6 olefins in an oligomerization reactor under chain growth conditions to provide a heavy olefin stream comprising C15 to C36 mono-olefins;
- passing the heavy olefin stream to a separation unit to generate a heavy olefin product stream comprising C15 to C36 mono-olefins, and a second stream having reduced heavy olefin content;
- alkylating benzene with at least a portion of the heavy olefin product stream under alkylation conditions including a stoichiometric excess of benzene to olefin to provide an alkylation effluent comprising alkylbenzenes and benzene;
- and
- separating benzene from at least a portion of the alkylation effluent and recycling at least a portion of the separated benzene to alkylation step.
Dependencies are inferred from the claim text.