Kellogg Brown + Root LLC

Curtis N Eng

Vijender Kumar Verma

Yonglin Yang

Rik B Miller

Systems and methods for separating one or more olefins are provided. In one or more embodiments, the method for separating one or more olefins can include separating at least a portion of one or more Cand heavier hydrocarbons from a hydrocarbon containing Cto Chydrocarbons to provide a first mixture that can include methane, ethane, ethylene, and/or acetylene. At least a portion of the first mixture can be hydrogenated to convert at least a portion of the acetylene to ethane and ethylene. At least a portion of the methane can be separated from the hydrogenated mixture to provide a second mixture that can include ethane and ethylene. At least a portion of the ethylene can be separated from the second mixture to provide a first product that can include at least 95 mol % ethylene and a second product that can include at least 95 mol % ethane.

Methods and systems for separating olefins

Systems and methods for processing one or more hydrocarbons are provided. In one or more embodiments, the method can include thermally converting a hydrocarbon comprising methane to produce a first product comprising acetylene. The method can also include hydrogenating the first product to produce a second product comprising ethylene. The method can further include catalytically reacting the second product with one or more butene products to produce a third product comprising propylene.

Systems and methods for processing hydrocarbons

Systems and processes for producing one or more olefins are provided. A feed containing Ccompounds can be dehydrogenated to provide a first product containing butene. At least a portion of the first product can be bypassed around a methyl-tert-butyl-ether production unit and cracked in a first cracker to provide a second product containing propylene, ethylene, and butane. A light hydrocarbon containing gas oils, full range gas oils, resid or any combination thereof can be cracked in a second cracker to provide a cracked hydrocarbon containing propylene, ethylene, and butane. An alkane can be cracked in a third cracker to provide cracked alkanes containing propylene, ethylene, and butane. The second product, cracked hydrocarbons, and cracked alkanes can be combined and separated to provide a third product containing propylene and a first recycle containing butane. At least a portion of the first recycle can be recycled to the first product prior to cracking. At least a portion of the first recycle can be recycled to feed prior to dehydrogenation.

Method for olefin production from butanes and cracking refinery hydrocarbons and alkanes

A process for increasing ethylene yield in a cracked hydrocarbon is provided. A hydrocarbon feed stream comprising at least 90% by weight of one or more C-Chydrocarbons can be heated to provide an effluent stream comprising at least 10% by weight propylene. The effluent stream can be selectively separated to provide a first stream comprising heavy naphtha, light cycle oil, slurry oil, or any combination thereof and a second stream comprising one or more C-Chydrocarbons. The second stream can be treated to remove oxygenates, acid gases, water, or any combination thereof to provide a third stream comprising the one or more C-Chydrocarbons. The third stream can be selectively separated to provide a product stream comprising at least 30% by weight propylene. At least a portion of the product stream can be recycled to the hydrocarbon feed stream to increase ethylene yield in the effluent stream.

Method for adjusting yields in a light feed FCC reactor

A dual riser FCC process is disclosed wherein first and second hydrocarbon feeds () are supplied to the respective first and second risers () to make an effluent rich in ethylene, propylene and/or aromatics. Where the hydrocarbon feeds are different, the respective risers can have different conditions to favor conversion to ethylene and/or propylene. A minor amount of a coke precursor () can be added to one or both of the hydrocarbon feeds () to reduce or eliminate the amount of supplemental fuel needed to heat balance the system. The different feeds, including the coke precursor and any recycle streams () can be segregated by type to improve olefin yields, including an embodiment where the paraffinic feeds are supplied to one riser and the olefinic feeds to the other.

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Houston, TX, United States of America

Curtis N Eng