Abstract: Methods of controlling olefin polymerization reactor systems are provided herein.

Abstract: Disclosed herein is a catalyst system comprising (i) a heterocyclic 2-[(phosphinyl)aminyl]imine transition metal compound complex having Structure I wherein T is oxygen or sulfur, R1 and R2 are each independently a C1 to C20 organyl group consisting essentially of inert functional groups, R3 is hydrogen or a C1 to C20 organyl group, L is a C1 to C20 organylene group consisting essentially of inert functional groups, MXp represents a transition metal compound where M is a transition metal, X is a monoanion, and p is an integer from 1 to 6, Q is a neutral ligand, and q ranges from 0 to 6, and (ii) an organoaluminum compound. Also disclosed herein is a process comprising contacting (i) ethylene, (ii) a catalyst system comprising (a) a heterocyclic transition metal compound complex having Structure I as described herein and (b) an organoaluminum compound, and (iii) optionally hydrogen to form an oligomer product.

Abstract: The present disclosure relates generally to methods and systems for achieving enhanced catalytic performance via the strategic arrangement of multiple catalyst beds in series, where each catalyst bed comprises a compositionally-distinct catalyst, and each catalyst facilitates the conversion of the same structural moieties on the reactant to form the same product. Arranging multiple catalyst beds according to the methods and systems disclosed herein allows a predictable enhancement of conversion of the reactant to product without the need for time-consuming experimentation to test all possible catalysts configurations.

Abstract: Techniques for drilling wellbores are described. The techniques include a) introducing a drilling fluid composition into a borehole defined by a formation; b) introducing a thinner composition including at least one tannin and at least one metal salt into the borehole; and c) contacting the thinner composition and the drilling fluid composition in the borehole, wherein the at least one tannin and at least one metal salt are not complexed ex situ. The at least one metal salt includes at least one copper salt, at least one zinc salt, or both at least one copper salt and at least one zinc salt.

Abstract: A polyolefin production system including: a first reactor configured to produce a first discharge slurry having a first polyolefin; a second reactor configured to produce a second discharge slurry having a second polyolefin; and a post-reactor treatment zone having at least a separation vessel configured to receive the second discharge slurry or both the first discharge slurry and the second discharge slurry.

Abstract: A bi-modal radial flow reactor comprising: a cylindrical outer housing surrounding at least five cylindrical, concentric zones, including at least three annulus vapor zones including an outer annulus vapor zone, a middle annulus vapor zone, and a central annulus vapor zone, and at least two catalyst zones, including an outer catalyst zone and an inner catalyst zone, wherein the outer catalyst zone is intercalated with the outer annulus vapor zone and the middle annulus vapor zone, and wherein the inner catalyst zone is intercalated with the middle annulus vapor zone and the central annulus vapor zone; and a manifold configured to introduce a feed vertically into a bottom end of each of one or two of the at least three annulus vapor zones, and remove a product from a bottom end of each of the one or two remaining of the at least three annulus vapor zones.

Abstract: A molecular complex comprising wherein X1 and X2 are independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, ester, ketone, amide and aryl groups; R1, R2, R1? and R2? are side chains independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, ketone and aryl groups; R3 are selected from the group consisting of alkyl group, alkoxy group, aryl groups and combinations thereof; and wherein the thiophene groups are unsymmetrical.

Abstract: An electrically operated aerosol-generating system is provided, including a main unit and a tubular aerosol-generating article. The main unit includes a heating portion disposed at an outer surface of the main unit. The heating portion includes one or more electric heaters. The tubular aerosol-generating article includes a tubular aerosol-forming substrate and an inner passage, wherein the inner passage is configured to receive the heating portion of the main unit. The one or more electric heaters of the heating portion of the main unit are arranged to heat the tubular aerosol-forming substrate when the tubular aerosol-generating article is received on the heating portion of the main unit. The aerosol-generating system further includes means to determine that the tubular aerosol-generating article is received on the heating portion of the main unit.

Abstract: Disclosed herein is a process for forming an oligomer product comprising (a) introducing into a reaction zone (i) ethylene; (ii) a heteroatomic ligand metal salt complex comprising a heteroatomic ligand complexed to a first metal salt; (iii) a second metal salt wherein an equivalent molar ratio of the second metal salt to the heteroatomic ligand of the heteroatomic ligand metal salt complex is at least 0.5:1 and where the second metal salt is an iron salt, a cobalt salt, or any combination thereof; (iv) an organoaluminum compound; and (b) forming an oligomer product. Also disclosed herein is a process comprising (a) introducing into a reaction zone (i) ethylene; (ii) a heteroatomic ligand; (iii) a metal salt where an equivalent molar ratio of the metal salt to the heteroatomic ligand is at least 1.5:1; (iv) an organoaluminum compound; and (b) forming an oligomer product.

Abstract: A system for recovering nitrogen during regeneration of a treater, the system including an adsorbent bed downstream of the treater, wherein the adsorbent bed comprises an adsorbent operable to adsorb at least one impurity from a treater bed regeneration effluent stream comprising nitrogen to provide a nitrogen product having a higher nitrogen purity than a nitrogen purity of the treater bed regeneration effluent stream. A method for recovering nitrogen during regeneration of a treater is also provided.

Abstract: A gas phase polymerization process is described that includes contacting a polymer seed bed with a desiccant. The gas phase polymerization process further includes introducing a polymer seed bed into a gas phase polymerization reactor, contacting the polymer seed bed with a desiccant, and introducing a polymerization catalyst into the gas phase polymerization reactor. Also described is a gas phase polymerization process in accordance with the present disclosure that includes subjecting a polymer seed bed to startup conditions in a gas phase polymerization reactor, monitoring a moisture content of a vapor in contact with the polymer seed bed, and introducing a desiccant into the gas phase polymerization reactor to maintain the moisture content below a desired moisture content, to reduce a moisture content that is above a desired moisture content, or both.

Abstract: A polymer comprising: In this polymer R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are independently selected from H, F, Cl, S, CN, or substituted, unsubstituted, straight-chain, branched, or cyclic alkyls ranging from 1 to 100 carbon atoms. The length of the polymer can range with n from about 1 to about 100,000 repeat units.

Abstract: Spacer fluid compositions comprising water, a clay, and a sulfur-containing polyether surfactant are disclosed, and such compositions often can further include a weighting additive, an antifoaming additive, and a co-solvent. These spacer fluid compositions can be used to treat metal casing and to remove drilling fluid residue for improved cement bonding in wellbore applications.

Abstract: The invention relates to a dispensing device for metering and dispensing a predetermined number of multiparticulates from a container. The dispensing device comprises a chamber which includes an inlet through which multiparticulates can enter the chamber and an overflow through which multiparticulates can leave the chamber. There is also an outlet through which multiparticulates can be dispensed from the chamber. The chamber comprises a metering surface which includes at least one retaining portion. The, or each, of the retaining portions is configured to be able to releasably retain a single multiparticulate.

Abstract: An air intake assembly includes heating elements. The heating elements include windings arranged in a serpentine configuration and having crest portions and trough portions. At least one crest portion of a first heating element is fastened to a corresponding trough portion of a second heating element. The heating elements are arranged in a honeycomb configuration.

Abstract: A process and system for desalting crude oil includes delivering a stream of salty crude oil and wash water into a mixing valve, mixing the stream of salty crude oil and wash water through the mixing valve to create a mixed stream of desalted crude oil and salty wash water, delivering the mixed stream of desalted crude oil and salty wash water to a static mixer, and mixing the mixed stream of crude oil and wash water in the static mixer. Within the static mixer, the mixed stream is mixed in a coalescing regime to coalesce smaller droplets of water into larger droplets of water. The mixed stream is then directed to a desalter where the salty wash water is separated from the desalted crude oil.

Abstract: Disclosed herein are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising a heteroatomic ligand chromium compound complex of the type disclosed herein, and ii) an aluminoxane. A C3+ olefin can be present in the reaction zone for a period of time, where the C3+ olefin is not an ethylene oligomer formed in-situ within the reaction zone.

Abstract: A method of preparing a bound zeolite support comprising: contacting a zeolite powder with a binder and water to form a paste; shaping the paste to form an wet extruded base; removing excess water from the wet extruded base to form an extruded base; contacting the extruded base with a fluorine-containing compound to form a fluorinated extruded base; calcining the extruded base to form a calcined fluorinated extruded base; washing the calcined fluorinated extruded base to form a washed calcined fluorinated extruded base; drying the washed calcined fluorinated extruded base to form a dried washed calcined fluorinated extruded base; and calcining the dried washed calcined fluorinated extruded base to form a bound zeolite support.

Abstract: Disclosed are processes for purifying feed streams containing hydrogen sulfide and sulfur-containing impurities by removing sulfur-containing impurities, such as elemental sulfur and polysulfanes, using solid catalytic sorbents. Also disclosed are processes for producing hydrogen sulfide.

Abstract: Processes for removing carbon disulfide from product streams containing a sulfide compound are performed by contacting the product stream with an alkanolamine and converting the carbon disulfide to a higher boiling point product, thereby reducing or eliminating carbon disulfide from the product stream. Subsequent removal of the higher boiling point product via distillation can lead to a purified sulfide stream with high purity.