What is the difference between rfcc and fcc in refinery. The study is devoted to the deactivation behavior of alumina guardtype mesoporous and hierarchical catalysts in longterm 800 h hydroprocessing of heavy oil under conditions close to. A process derived hydrogen donor solvent is used to increase the maximum resid conversion and conversion rate in an ebullated bed resid hydrocracker. This process also has the flexibility to use nonstandard feeds, such as heavy coker gas oil hcgo and deasphalted oil dao. Conference presentations galveston 2020 refining community. The hydrogen donor solvent precursor is produced by hydroreforming reactions within the resid hydrocracker, recovered as the resin fraction from a solvent deasphalting unit, regenerated in a separate hydrotreater reactor, and recycled to the. In 1992 the plant was restarted due to increased heavytolight crude price differentials. The hydrocracker yields a high volume of kerosene and light gasoil of good quality high cetane and low sulfur. Slurry hydrocracking offers the maximum amount of upgrading and produces zero fuel oil. Delayed coking, fluid catalytic cracking, solvent deasphalting, and sulfur recovery. Refinery configurations for maximising middle distillates r efiners globally continue to face numerous challenges as environmental laws become increasingly stringent. Fluid catalytic cracking produces a high yield of petrol and lpg, while hydrocracking is a major. General linear programming deals with allocation of resources, seeking their optimization. Improved product yields and attrition resistance using residcracker fcc catalyst at bayernoil neustadt h igh catalyst losses from the fcc unit can have considerable consequences for refineries, such as contamination of slurry oil, erosion of slurry circulation pumps, required cleaning of heavy oil tanks due to catalyst build.
Presentation topics for refcomm galveston 2020 are categorized in 4 tracks. Hydrocracking crystalline silica alumina base with rare earth metals deposited in the lattice platinum, palladium, tungsten, andor nickel rare earth metals typically mixture of lanthanum, cerium, and other minor quantities acid function promotes the cracking feed stock must first be hydrotreated. Improved product yields and attrition resistance using residcracker fcc catalyst at bayernoil neustadt h igh catalyst losses from the fcc unit can have considerable consequences for refineries, such as contamination of slurry oil, erosion of slurry circulation pumps, required cleaning of. Due to the continual supply of fresh catalyst, the residuum hydrocracking unit rhu produces a constant yield of highquality products. We plan to target a capital structure to maximize valuation for both sets of shareholders and position speedway for growth. Uops uniflex mc process is a slurry hydrocracking process which achieves the highest conversion and produces the maximum naphtha and diesel yield compared to other residue conversion technologies. Conversion process units are used to convert one hydrocarbon stream into another by changing molecule size and structure. Hydrocracker hcu upgrades high sulfur gasoil into low sulfur gasoline, jet and diesel increases volumetric yield of products through hydrogen saturation total hydrocracker liquid volume yield is approximately 110% to 115% of throughput. Impact of feed properties and operating parameters on. Hydrogen donor solvent production and use in resid. Refinery configurations for maximising middle distillates.
The coming few years are offering quite a few challenges to our industry with energy demand, imo bunker sulphur cap of 0. Marathon petroleum corporation mpc ceo gary heminger on. Marathon petroleum corporation mpc ceo gary heminger on q4. Us20070108100a1 hydrogen donor solvent production and use. Hc520 is the newest distillate selective hydrocracking catalyst offered by uop in the unity line. This is an excellent opportunity for operators and solution providers to share lessons learned, best practices and new technologies to optimize productivity and safety. The functions being optimized and the constraints are linear. By hydrotreating resid containing such species, not only is the sulfur removed as h 2 s, but the heterocyclic rings are broken up to yield a significant amount of monocyclic aromatic species, which are often valuable commodities by themselves and are also a preferred feed to steam crackers. Hydrocarbon resid processing exxonmobil chemical patents inc. More loosely, outside the field of petroleum chemistry, the term cracking is used to describe any type of splitting of molecules under the influence of heat, catalysts and solvents, such as in processes of destructive distillation or pyrolysis. Klein center for catalytic science and technology department of chemical. Mpc q4 2019 earnings conference call january 29, 2020 9.
Controlling ammonia chloride based salt deposition in fccu. Another attractive feature of hydrocracking is the low yield of gaseous components, such as methane, ethane, and propane, which are less desirable than gasoline. Having met their objectives, petrocanada shut down the canmet demonstration unit in 1989. When making jet fuel, more hydrogenation activity of the catalysts is used, since jet fuel contains more saturates than gasoline. Technology for heavy oil conversion maureen bricker,1 james mcgehee, robert haizmann, paul zimmerman, alak bhattacharyya, lorenz bauer, and beckay mezza uop llc, a honeywell company 1uop research center, des plaines, il 600175016 usa maureen. Principal among them in the near future will be the international maritime organisations imo proposed changes to bunker fuel oil sulphur limits, from the current. What is the uses of decant oil or clarified oil or slurry oil. Resid hydrocracking processes heavier feeds to maximize diesel production. Us7594990b2 hydrogen donor solvent production and use in. When comparing the two formulations, icr 183 showed a 1. The combined feed enters surge drum v33, is pumped to feed heater h01 then mixed with highpressure recycled hydrogen gas, is preheated in h02 in mixers, then fed to the reactor v01 at about 750f and 2450 psig see figure 3.
Monte carlo simulation of complex reaction systems. Marathon petroleum corporation mpc q3 2019 earnings call. Improved product yields and attrition resistance using. The effluent from hydroprocessing unit is sent to another hydroprocessing unit 14, for example a resid hydrocracker, a fcc unit or a coker unit. Many refiners do not have hydrocrackers, but as demand for middle distillates such as jet fuel, kerosene, and diesel increases both in the united states and around the world, refiners may find incentive to build them to increase distillate yield. Our singlesource supply of all the key elements of a hydrocracking unit comprising hydrocracker pretreatment, hydrocracking and grading catalysts, technology licensing including heavy polynuclear aromatic hpna management solutions and highperformance reactor internals can help you maximize yields of the exact products you need whether. Internal porous structure with acid sites to crack larger molecules to desired size range 20 fluid catalytic cracking.
The resid hydrocracker yields a high volume of kerosene and light gasoil distillate of good quality high cetane and low sulfur. Hydrocracker yields tor onator hydrogen gasoil refinery gases gasoline distillate. The hydrocracker is particularly valuable in a refinery that is trying to maximize diesel production and reduce residual fuel oil. Maximize distilate yeilds hydrocracking altrernative. Us patent for process for the preparation of a feedstock for. Edited transcript of mpc earnings conference call or. Refinery residue upgrading february 2000 refinery residue is the hydrocarbon oil remaining after distillates have been removed from petroleum. The objective is to shift the yield of the refinery away from less valuable products e. We welcome abstracts from all organizations, but presentations. Improved unit operations allows flexibility between gasoline and diesel production by maximizing yield cuts. Once the yield point is passed, some fraction of the deformation will be permanent and nonreversible and is known as plastic deformation.
Hydrogen donor solvent production and use in resid hydrocracking processes aug 7, 2006 the boc group, inc. Firststage effluent is sent to a fractionator along with the effluent from the second stage. Molecular structure and reactivity in modelling heavy oils matthew neurock, cristian lihanati, abhash nigam, michael t. Determine mass feed based on density of vacuum resid. In addition to diesel, hc320 can yield ethylene cracker feed, jet a1kerosene, and high quality lube base stocks. It is a similar unit yielding a similar range and quality of products, but it is designed to handle heavier vacuum resid as a feed. By mixing solvent 6 with atmospheric residue andor a vacuum residue the viscosity of feed 15 is significantly reduced. Petroleum refining at a glance petroleum refining is a unique and critical link in the petroleum supply chain, from the wellhead to. A resid hydrocracker is a variant on the typical vgo hydrocracker.
Michel melin, colin baillie and gordon mcelhiney, from the grace davison refining technologies, worms, germany office discuss multiple options for controlling nh4cl based salt deposition in fccu main fractionator overhead and other areas ammonia chloride nh4cl based salt deposition in the fccu, particularly in the main fractionators mf continues to be an ongoing problem due to potentially. The high naphthene content makes the hydrocracker gasoline an excellent feed for catalytic reforming, and good yields of highoctanenumber gasoline can be obtained. Generic residua hydrocracker kinetics and simulation model. Feb 08, 2018 fcc fluid catalytic cracker rfcc residue fluid catalic cracker note the second stageregenerator which is the key differentiator worldwide demand for propylene continues to rise at a rapid pace. The yield strength or yield stress is a material property and is the stress corresponding to the yield point at which the material begins to deform plastically. Steps determine volume feed based on vol% yield of vacuum resid.
Heavy fuel oil carbon black feed added feed to resid hydrocracker to retard asphaltenes precipitation blocked out runs on the delayed coker for premium coke production coker feed to just dispose of it. Petroleum refining and the prod uction of ulsg and ulsd october 24, 2011 page 2 2. The economics of petroleum refining understanding the business of processing crude oil into fuels and other value added products december 20. Also, the resid is partially desulfurized and demetallized. Aug 10, 2017 the feed to resid hydrocracker is crude unit vacuum bottoms. Pretreating fcc feeds makes economic sense journal article. Two performance test runs, at 52 vol% and 66 vol% conversions, were completed in january and march 2001, respectively. Hydrocracking of heavy resid feedstock is forecasted to continue to grow over the coming decades, as large reserves of unconventional extraheavy crude are available in several regions around the globe. Nearly a 10% increase in conversion can be realized by pretreating. Marathon petroleum corporation mpc q3 2019 earnings call transcript mpc earnings call for the period ending september 30, 2019. Hc320 from uop is said to possess superior activity and stability when compared to previous generation hydrocracking catalysts. In gasoline production, for example, the hydrocracker product must be further processed in a catalytic reformer as it has a high naphthene content and relatively low octane number. The distillates produced are separated in a distillation column into naphtha, kerosene, and light diesel.
Impact of feed properties and operating parameters on delayed. Gas oil conversion to products is conducted in two sequential stages. The following discussion used a simplified version of the simulation model thermal cracking kinetics to explore the reaction yield effect for a single feedstock, to allow comparison to the hydrocracker yields and products. Fcc fluid catalytic cracker rfcc residue fluid catalic cracker note the second stageregenerator which is the key differentiator worldwide demand for propylene continues to. Resid hydrocracking catalyst characteristics propertyunits. What are the expected products from a delayed coker when running 100,000 sbpdof the torrance field crude oil assay on page 404. Resid hydrocracker produces lowsulfur diesel from difficult. Digitalrefining refining, gas and petrochemical processing. The feed to resid hydrocracker is crude unit vacuum bottoms. In the emerging lowsulfur world, the hydrocracker often converts highsulfur materials, which. The fcc yield structure of vacuum gas oil, blended with varying amounts of coker gas oil or resid, can be significantly improved by hydrotreating prior to fluid catalytic cracking. Refinery linear programming modeling overview the basic problem of linear programming lp is to maximize or minimize a function of several variables subject to a number of constraints.
Improving hydrocracker unit operations with the smart refinery the hydrocracker unit is an essential process for the overall refinery profitability in converting low value heavy feedstock into higher value fuels such as diesel and gasoline. Fresh feed is mixed with a heavy vacuum gas oil diluent. Icr 183 is 30f more active than icr 160, with no increase in light gas make. Uop uniflex process, a slurry hydrocracking process, maximizes conversion of residues to transportation fuels and reduces residue byproducts. Residue upgrading processes are increasingly important in the modern refinery because of the continuing decline in.
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