Abstract: A naphtha reforming reactor system comprising a first reactor comprising a first inlet and a first outlet, wherein the first reactor is configured to operate as an adiabatic reactor, and wherein the first reactor comprises a first naphtha reforming catalyst; and a second reactor comprising a second inlet and a second outlet, wherein the second inlet is in fluid communication with the first outlet of the first reactor, wherein the second reactor is configured to operate as an isothermal reactor, and wherein the second reactor comprises a plurality of tubes disposed within a reactor furnace, a heat source configured to heat the interior of the reactor furnace; and a second naphtha reforming catalyst disposed within the plurality of tubes, wherein the first naphtha reforming catalyst and the second naphtha reforming catalyst are the same or different.

Abstract: A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for the first reactor temperature control path and the second reactor temperature control path.

Abstract: A closure system configured to facilitate hemostasis at a puncture of a vessel includes a delivery sheath that extends longitudinally from a delivery sheath proximal end to a delivery sheath distal end. The delivery sheath defines a delivery sheath lumen extending therethrough and configured to receive a first guidewire therethrough. The system also includes an introducer needle configured to selectively couple to the delivery sheath for movement relative to the delivery sheath. The introducer needle is configured to form a secondary access site in the vessel at an offset from the puncture after the delivery sheath distal end is advanced through the puncture. The system further includes a stylet configured to be received through the delivery sheath lumen adjacent to the first guidewire. The stylet includes a stylet magnet configured to magnetically couple to a guidewire magnet of a second guidewire advanced through the secondary access site.

Abstract: The invention relates to injecting steam into crude oil for several benefits, primarily of which is to remove salt by transferring the salt into the condensed water from the steam. Steam transfers salt via a different transfer mechanism and therefore doesn't require the high shear mixing of conventional water injection systems. As such, steam injection through a variety of procedures, is more efficient at gathering salt into water that itself is easier to remove from the crude oil.

Abstract: A process is described for introducing a catalyst into a polymerization zone by detecting one or a combination of (i) a change in a concentration of the catalyst in a catalyst feed stream upstream of the polymerization zone, (ii) a change in a concentration of monomer in the polymerization zone, and (iii) a change in a polymer production rate of the polymerization zone, adjusting a first catalyst flow rate of the catalyst in the catalyst feed stream to a second catalyst flow rate based on the one or a combination of (i), (ii), and (iii), and introducing the catalyst into the polymerization zone downstream of a location in the catalyst feed stream where the step of adjusting is performed. A catalyst injection system for carrying out such a process is also provided.

Abstract: A method comprising: flowing gas from a wellbore penetrating a subterranean formation through a wellhead to yield produced gas; flowing the produced gas through a wellhead line to one or more wellsite processing units to yield wellsite processed gas; and flowing the wellsite processed gas through a gathering line to a gas processing plant, a gas pipeline transmission system, or both, wherein the wellhead line, the gathering line, or both comprise polyvinylidene fluoride (PVDF) pipe having a nominal pipe size of equal to or greater than 2 inches and equal to or less than 16 inches.

Abstract: A process comprising a) contacting (i) ethylene, (ii) a catalyst system comprising 1) a heteroatomic ligand iron salt complex, or a heteroatomic ligand and an iron salt, (iii) hydrogen, and (iv) optionally an organic reaction medium; and b) forming an oligomer product wherein 1) the oligomer product has a Schulz-Flory K value from 0.4 to 0.8 and 2) the oligomer product comprises (a) less than 1 wt. % of polymer, (b) less than 1 wt. % compounds having greater than 70 carbon atoms, (c) less than 1 wt. % compounds having a weight average molecular weight of greater than 1000 g/mol, or (d) any combination thereof wherein the weight percentage is based on the total weight of the oligomer product.

Abstract: Processes for activating chromium polymerization catalysts, which can use lower maximum activation temperatures and shorter activation times than conventional activation methods, and provide polyethylenes with high melt indices, broader molecular weight distributions, and lower long chain branching content. The activation process can comprise heating a supported chromium catalyst in an inert atmosphere to a first temperature (T1) for a first hold time (tH1), followed by allowing the chromium catalyst to attain a second temperature (T2) in the inert atmosphere, then contacting the chromium catalyst with an oxidative atmosphere for a second hold time (tH2), in which T2 can be less than or equal to T1. Additional activation treatments and conditioning steps are disclosed which can be used to enhance the melt index potential of Phillips (Cr/silica) catalysts.

Abstract: Provided herein are methods of inhibiting polymerization of vinyl aromatic monomers. The methods include distilling a vinyl aromatic monomer in a distillation column to form a vinyl aromatic monomer distillate; removing the vinyl aromatic monomer distillate from the distillation column; combining the vinyl aromatic monomer distillate with 4-tert-butylcatechol (TBC) to form a treated distillate; and adding a reflux liquid that includes the treated distillate to the distillation column liquid of the distillation column. An added oxygen gas may be present in a distillation column liquid in an amount of at least 1 ppmw, based on the weight of the vinyl aromatic monomer.

Abstract: A method is described for operating an asset tracking device, wherein the tracking device normally collects many location points at a high periodic rate and transmits the location points as a single compressed location history data block at a low periodic rate, which greatly reduces the amount of transmitted data required to send a detailed location history. When a user begins actively viewing the asset location in some application such as on a mobile device, a command is immediately sent from the tracking server back to the tracking device. This command causes the device to start transmitting location reports at a high periodic rate, thereby allowing the user to monitor the current location of the asset in real-time. Transmission at the high data rate required for real-time monitoring only occurs while the user is actively interacting with the application, which is usually a short period of time.

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a density of at least 0.94 g/cm3, a high load melt index from 4 to 20 g/10 min, a zero-shear viscosity at 190° C. from 20,000 to 400,000 kPa-sec, and a relaxation time at 190° C. from 225 to 3000 sec. These ethylene polymers can be produced by peroxide-treating a broad molecular weight distribution Ziegler-catalyzed resin, and can be used in large diameter, thick wall pipes and other end-use applications.

Abstract: Processes for producing an ?,?-unsaturated carboxylic acid, such as acrylic acid, or a salt thereof, using treated solid oxides are disclosed. The treated solid oxides can be calcined solid oxides, metal-treated solid oxides, or metal-treated chemically-modified solid oxides, illustrative examples of which can include sodium-treated alumina, calcium-treated alumina, zinc-treated alumina, sodium-treated sulfated alumina, sodium-treated fluorided silica-coated alumina, and similar materials.

Abstract: A radically coupled polymer having a density of from about 0.915 g/ml to about 0.975 g/ml characterized by a crossover modulus measured in Pascals (Pa) that is equal to or less than ymn where ymn=180,000e?0.15x and x is the number average molecular weight of the radically coupled polymer divided by 1,000. An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. %; a level of long chain branching ranging from about 0.001 LCB/103 carbons to about 1.5 LCB/103 carbons as determined by SEC-MALS; and characterized by a crossover modulus measured in Pa that is equal to or less than ymn where ymn=180,000?0.15x and x is the number average molecular weight of the radically coupled polymer divided by 1,000.

Abstract: A mold, punch and workpiece are provided. In a preferred embodiment, a tapering outer edge is provided, along with a plurality of rib sets arranged circumferentially about the outer edge, and a ramp. A ramp may be located to facilitate the removal of burrs. Various slot patterns may be provided or formed, including star-shapes/Torx® slots. Using the present invention, a driver bit may be more securely fit to the slot of a screw, for example, allowing the screw to be threaded into a machined part more securely and smoothly, reducing rocking, shaking or tilt.

Abstract: An assembly may include an auxiliary power unit housing, a battery box, and a pair of brackets. The battery box may include a base, a first cover and a second cover. The first cover may be removably attached to the base. The auxiliary power unit housing may be mounted to the second cover. The first cover may include a lip that engages a flange of the second cover. The brackets may extend laterally outward from lateral sides of the base.

Abstract: A process is disclosed for polishing a relatively highly pure stream of aromatic material bound for use as a petrochemical feedstock wherein the stream includes olefins and especially concerning, diolefins. The process comprises hydrotreating the highly pure aromatic stream with an unsulfided cobalt molybdenum catalyst that has low saturating activity for the aromatic but is active for saturating olefins and diolefins.

Abstract: Methods for regenerating a spent catalyst are disclosed. Such methods may employ a step of chlorinating the spent catalyst in the gas phase, followed by decoking the chlorinated spent catalyst, and then fluorinating the de-coked catalyst in a fluorine-containing solution of a fluorine-containing compound.

Abstract: Methods for producing supported catalysts containing a transition metal and a bound zeolite base are disclosed. These methods employ a step of impregnating the bound zeolite base with the transition metal, fluorine, and high loadings of chlorine. The resultant high chlorine content supported catalysts have improved catalyst activity in aromatization reactions.

Abstract: A method of forming a thermoresponsive polymer. The method begins by forming a monomer solution by mixing and an optional water soluble monomer in the presence of an aqueous solution. An initiator is then added to the monomer solution to form a thermoresponsive polymer. In this method, R1 can be independently selected from the group consisting of H and alkyl groups; Y can be selected from the group consisting of O, N and S; R2 and R3 can be independently selected from the group consisting of H, alkyl, olefinic, heterocyclic, aromatics, halogens, ammonium salts, nitroxides, nitrates, nitrites, amines, amides, carboxylic acidsacyl chlorides, esters, ethers, alcohols, nitriles, phosphates, phosphonates, sulfates, sulfonates, sulfides, sulfites, thiols, and combinations thereof; and X are methylene groups from about 0 to about 20 carbons.

Abstract: The present disclosure relates generally to a system having a reactor system with a polymerization reactor and a feed system fluidly coupled to a feed inlet of the reactor. The feed system supplies components to the reactor via the feed inlet, and the reactor has a flow path that continuously conveys the components through the reactor and subjects the components to polymerization conditions to produce a polymer. The system also has an analysis system coupled to the reactor for online monitoring of a particle size of the polymer. Further, the system includes a control system, coupled to the analysis and feed systems, that receives a signal from the analysis system indicative of the monitored particle size of the polymer and adjusts an operating parameter of the feed system to control a flow rate of at least one of the components to the reactor based at least on the signal.