Abstract: A process is presented for the production of light olefins. The process utilizes a SAPO-18 catalyst and is operated at an elevated pressure. The process generates higher concentrations of heavier olefins which can then be processed to generate light olefins. The processing of the heavier olefins can include metathesis reactions and olefin cracking processes.

Abstract: A process is presented for the production of light olefins. The process utilizes a SAPO-18 catalyst and is operated at an elevated pressure. The process generates higher concentrations of heavier olefins which can then be processed to generate light olefins. The processing of the heavier olefins can include metathesis reactions and olefin cracking processes.

Abstract: A process is presented for generating light olefins with the methanol to olefins process from a combination of catalysts. The process controls the product distribution for ethylene, propylene and butylenes, to enable shifting of the product distribution. The process includes passing a second catalyst to a reactor while the process is on-going.

Abstract: A process is presented for the production of light olefins. The process utilizes a SAPO-18 catalyst and is operated at an elevated pressure. The process generates higher concentrations of heavier olefins which can then be processed to generate light olefins. The processing of the heavier olefins can include metathesis reactions and olefin cracking processes.

Abstract: A process is presented for generating light olefins with the methanol to olefins process from a combination of catalysts. The process controls the product distribution for ethylene, propylene and butylenes, to enable shifting of the product distribution. The process includes passing a second catalyst to a reactor while the process is on-going.

Abstract: A process is presented for the conversion of oxygenates to olefins. The process utilizes a catalyst comprising a silicoaluminophosphate with an added basic metal oxide. The basic metal oxide modifies the selectivity to increase the yields of propylene and heavier olefins. The increase in heavier olefins are processed downstream to further increase propylene yields, and to generate a process stream comprising butylenes.

Abstract: A process is presented for the production of light olefins. The process utilizes a SAPO-18 catalyst and is operated at an elevated pressure. The process generates higher concentrations of heavier olefins which can then be processed to generate light olefins. The processing of the heavier olefins can include metathesis reactions and olefin cracking processes.

Abstract: Described herein is a process for producing an alpha olefin by obtaining a feed stream of internal olefins having a first carbon number and alpha olefins having a first carbon number. The olefins are isomerized to increase the quantity of the alpha olefins. The olefins are then fractionated, subjecting the overhead material to catalytic metathesis to produce a mixed olefin effluent of internal olefins having a second carbon number and other hydrocarbons. The first isomerization reactor and fractionator are prepared to receive the olefins having a second carbon number, where the internal olefin intermediate is isomerized in the prepared first isomerization reactor. The second isomerization effluent is fractionated in the prepared first fractionator to separate the alpha olefins having the second carbon number from the internal olefins having the second carbon number. A corresponding system is also described, along with a heat pump that may be incorporated into the process.

Abstract: Embodiments disclosed herein provide processes for upgrading the hexene stream to valuable end products, including ethers, high purity 1-hexene, and, alternatively, high purity isohexene. Hexene upgrading may be performed in embodiments disclosed herein by first removing isohexene from the admixture. The isohexene may undergo etherification with one or more alcohols, facilitating the separation of the isohexene (in the form of an ether) from the normal hexenes. Second, the normal hexenes may be isomerized to convert internal hexene olefins (2-hexenes and 3-hexenes) to the desired alpha olefin, 1-hexene. The 1-hexene may then be separated from unreacted components to yield a high purity 1-hexene product.

Abstract: Processes and systems for producing linear alpha olefins are described herein.

Abstract: Disclosed herein is a process for producing an alpha olefin comprising obtaining a feed stream comprising an internal olefin having a first carbon number and an alpha olefin having a first carbon number, isomerizing the feed stream to increase the quantity of the alpha olefin, fractionating, subjecting the overhead material from fractionation to catalytic metathesis to produce a mixed olefin effluent comprising an internal olefin having a second carbon number and other hydrocarbons, fractionating, preparing the first isomerization reactor and fractionator to receive the olefin having a second carbon number, isomerizing the internal olefin intermediate in the prepared first isomerization reactor, and fractionating the second isomerization effluent in the prepared first fractionator to separate the alpha olefin having the second carbon number from the internal olefin having the second carbon number. A corresponding system also is disclosed, along with a heat pump that can be incorporated into the process.

Abstract: Embodiments disclosed herein provide processes for upgrading the hexene stream to valuable end products, including ethers, high purity 1-hexene, and, alternatively, high purity isohexene. Hexene upgrading may be performed in embodiments disclosed herein by first removing isohexene from the admixture. The isohexene may undergo etherification with one or more alcohols, facilitating the separation of the isohexene (in the form of an ether) from the normal hexenes. Second, the normal hexenes may be isomerized to convert internal hexene olefins (2-hexenes and 3-hexenes) to the desired alpha olefin, 1-hexene. The 1-hexene may then be separated from unreacted components to yield a high purity 1-hexene product.

Abstract: Sulfur compounds present as sulfides and mercaptans in spent caustic streams from refinery and petrochemical processes are oxidized by contacting them with an oxygen-containing gas in a packed column recycle reactor.