Abstract: The invention relates to isomerization catalysts and can be used in the petroleum processing and petrochemical industry. The catalyst contains sulfated zirconium oxide and a binder—aluminum oxide in a ratio of ZrO2/SO4 to Al2O3 from 70 to 30 to 90 to 10, as well as promoter, a group II metal, Ca, in a quantity ranging from 0.01 to 1 wt % of the weight of the catalyst. The catalyst also contains platinum and/or palladium in a quantity ranging from 0.1 to 0.45 wt % of the metal. Isomerization of C4-C7 paraffinic hydrocarbons in the presence of hydrogen at a temperature of 110-200° C., a pressure of 1-5 MPa, a hydrogen:hydrocarbon ratio of 0.5-4, and a feedstock space velocity of 0.5-4 h?1 is carried out on a catalyst having the claimed composition. The proposed catalyst offers an enhanced degree of isomerization, improved selectivity of the process, and increased strength of the granules.

Abstract: Methods and systems for producing anode grade coke are disclosed, which allow anode grade coke to be produced from crude oil having a high sulfur content. A fraction of the resid is hydrotreated while another fraction of the resid is treated in a solvent deasphalting unit. A synthetic stream is provided by blending hydrotreated resid with one or more streams from the deasphalting unit. The synthetic stream is fed to an anodic coker unit.

Abstract: A demethanizer employing C3, C4 and C4+ hydrocarbons as absorbents can be employed in a methanol to olefin process to reduce both operating and capital costs in comparison to a convention process which employs only cryogenic distillation to remove methane and other low boilers from a light olefin process stream. By reducing the use of propane, the size and operating costs of the C3 splitter can be reduced thereby providing an economic advantage over conventional applications.

Abstract: Methods and systems for producing urea are provided. Ammonia, carbon dioxide, and a carbamate solution can be combined in a pressurized mixer to produce a carbamate reaction mixture. The carbamate reaction mixture can be transferred from the pressurized mixer to a reactor. The carbamate reaction mixture can be heated in the reactor to produce a urea reaction mixture that can include urea, water, ammonia, carbon dioxide, and ammonium carbamate. The urea reaction mixture can be contacted to a membrane to separate an aqueous filtrate and a urea concentrate that can include urea, ammonia, carbon dioxide, and ammonium carbamate. The urea concentrate can be transferred from the reactor to a urea purification system that can include one or more separators and one or more decomposers. The urea concentrate can flow through the urea purification system to produce one or more urea products and one or more carbamate solutions.

Abstract: A method of revamping vertical converters having a bolt-on flanged pressure shell extension for housing an internal heat exchanger is performed by replacing an existing pressure shell extension with a larger pressure shell extension for housing a plurality of internal heat exchangers.

Abstract: A system for conveying fluids at a subsea location includes a module having a flow line formed of plurality of linear sections. At least two of the sections have a geometrically parallel arrangement. The module includes an inlet supplying fluid to the flow line and an outlet receiving fluid from the flow line.

Abstract: Systems and methods for producing ammonia. The system can include a first ammonia converter, a second ammonia converter, a product separator, and an ammonia recovery unit. The first ammonia converter can be adapted to react a syngas to produce a first ammonia product and a first purge gas. The second ammonia converter can be in fluid communication with the first ammonia converter and can be adapted to react the first purge gas to produce an effluent. The product separator can be in fluid communication with the second ammonia converter and can be adapted to separate the effluent to produce a second ammonia product and a second purge gas. The ammonia recovery unit can be in fluid communication with the product separator and can be adapted to separate at least a portion of the second purge gas to produce a third ammonia product and a third purge gas.

Abstract: A process for slurry-phase hydrocracking of a heavy hydrocarbon feedstock in a reactor, such as an upflow bubble column reactor, includes separately introducing additive in two size ranges into the feedstock. A fine size particle additive is introduced upstream of a coarse size particle additive.

Abstract: Embodiments generally relate to a motor driven compressor (MDC) power network electrically isolated and independent from a balance of plant (BOP) power network within an electrical power system and methods for operating the same. In one embodiment, the MDC power network can include one or more MDC trains, and each of the MDC trains can include an MDC distribution bus, one or more MDC turbine generators, one or more electric motors, and one or more compressors. The BOP power network can include a BOP distribution bus, one or more BOP turbine generators, and one or more plant circuits comprising the balance of the plant.

Abstract: Methods, systems, and apparatus for cooling particulates are provided. A method can include introducing particulates and water to a first vessel to provide a fluidized bed of particulates and cooling the fluidized bed of particulates in the first vessel to obtain first cooled particulates. The method can also include recovering the first cooled particulates from the first vessel and introducing the first cooled particulates to a heat exchanger comprising a plurality of tubulars. The method can also include introducing a coolant to the plurality of tubulars, flowing the first cooled particulates through a shell side of the heat exchanger and contacting at least a portion of the first cooled particulates with the plurality of tubulars, recovering a heated coolant from the plurality of tubulars, and recovering second cooled particulates from a particulate outlet.

Abstract: Methods and systems for producing a hydrocarbon are provided. The method can include cracking one or more C2-C10 hydrocarbons in the presence of a catalyst under conditions sufficient to produce an effluent containing ethylene, propylene, gasoline, and a coked-catalyst, wherein the catalyst includes a first catalytic component having an average pore size of less than 6.4 ? and a second catalytic component having an average pore size of 6.4 ? or more, separating the effluent to provide a recovered coked-catalyst and a cracked product; and regenerating the recovered coked-catalyst to produce heat and the catalyst.

Abstract: Methods and systems for producing a hydrocarbon are provided. The method can include cracking one or more C2-C10 hydrocarbons in the presence of a catalyst under conditions sufficient to produce an effluent containing ethylene, propylene, gasoline, and a coked-catalyst, wherein the catalyst includes a first catalytic component having an average pore size of less than 6.4 ? and a second catalytic component having an average pore size of 6.4 ? or more, separating the effluent to provide a recovered coked-catalyst and a cracked product; and regenerating the recovered coked-catalyst to produce heat and the catalyst.

Abstract: Methods and systems for removing volatile organic compounds from spent air are provided. The method can include oxidizing cumene in the presence of an oxidant to produce an oxidized product containing methanol and a spent air, separating the spent air from the oxidized product, contacting the spent air with an absorbent, an adsorbent, or a mixture thereof to remove at least a portion of any impurities in the spent air to produce a first purified air, and contacting the first purified air with a biological material to produce a treated air.

Abstract: Embodiments described generally relate to methods for assembling a modular floating production storage and offloading (FPSO) vessel. A cargo module section, a forward module, and a rear module can be positioned and aligned with each other such that the cargo module section can be disposed between the forward module and the rear module. A plurality of connectors can be coupled together to secure the forward module and the cargo module section together and another plurality of connectors can be coupled together to secure the rear module and the cargo module section together. A first topside module can be installed onto or over an upper surface of the forward module and can include a flare tower, a turret, hydrocarbon production equipment, or any combination thereof.

Abstract: Methods and systems for separating hydrocarbons using one or more dividing wall columns are provided. The method can include introducing a hydrocarbon fluid to a first dividing wall column. A first overhead comprising methane, ethane, or a combination thereof, a first intermediate comprising ethane, a second intermediate comprising ethane, and a first bottoms comprising one or more hydrocarbons having three or more carbon atoms per molecule can be recovered from the first dividing wall column. The first overhead can be introduced to a process for producing a liquefied natural gas. The first bottoms can be introduced to a second dividing wall column. A second overhead comprising propane, a third intermediate comprising butane, and a second bottoms comprising one or more hydrocarbons having five or more carbon atoms per molecule can be recovered from the second dividing wall column. The second overhead can be introduced to the process for producing a liquefied natural gas.

Abstract: A photobioreactor has an optical waveguide formed at least in part from a highly scattering optically transmitting polymer. The optical waveguide has a light distributing part immersed in a container holding photoactive biological material and a light collecting part outside the container.

Abstract: Methods and systems for making ammonia are provided. The method can include heating a first compressed syngas to produce a heated first syngas. The heated first syngas and a second compressed syngas can be combined to produce a combined syngas. The combined syngas can be reacted within a first ammonia converter and a second ammonia converter to produce an ammonia product. Heat from the ammonia product can be transferred to a first heat transfer medium to produce a first cooled product and a second heat transfer medium. Heat from the first cooled product can be transferred to a third heat transfer medium to produce a second cooled product. Heat from the second cooled product can be transferred to the combined syngas to produce a third cooled product. The third cooled product can be separated to produce a purified ammonia product and a recycle gas.

Abstract: Methods and systems for making ammonia are provided. The method can include converting carbon monoxide in a first syngas to carbon dioxide to produce a shifted syngas. At least a portion of the carbon dioxide can be separated from the shifted syngas to produce a carbon dioxide-lean syngas. Carbon monoxide and/or carbon dioxide in the carbon dioxide-lean syngas can be converted to methane to produce a methanated first syngas. A second syngas can be separated to produce a purified second syngas and a waste gas. The methanated first syngas and the purified second syngas can be combined to produce an ammonia feedstock. The ammonia feedstock can have a hydrogen to nitrogen molar ratio of about 3.5:1 to about 2.5:1. At least a portion of the hydrogen and nitrogen in the ammonia feedstock can be reacted to produce an ammonia product.

Abstract: Co-production a product anode grade coke and a product fuel grade coke is done using a system configured to implement a method that includes: directing an anode grade coker charge material from a tower to a first coke drum set; generating the product anode grade coke using the first coke drum set while directing a first vapor stream from the first coker drum set to the tower; directing a fuel grade coker charge material from a fractionator to a second coke drum set; generating the product fuel grade coke using the second coke drum set while directing a second vapor stream from the second coke drum set to the fractionator; and directing a third vapor stream from the tower to the fractionator while generating the product anode grade coke using the first coke drum set and generating the product fuel grade coke using the second coke drum set.

Abstract: A system for conveying fluids at a subsea location includes a module having a flow line formed of plurality of linear sections. At least two of the sections have a geometrically parallel arrangement. The module includes an inlet supplying fluid to the flow line and an outlet receiving fluid from the flow line.