Uop naphtha hydrotreating process pdf

Specifically designed for operation in the 2nd stage of a twostage flow. Coker naphtha hydrotreating technology process licensing. Naphtha kerosene distillate ago lvgo hvgo vacuum residuum cat distillates gas oil hydro treating dao isomerate gas alkyl feed alkylate polymerization naphtha gases butanes lpg reformate naphtha fuel oil bottoms distillates distillate hydro treating cat naphtha cycle oils sda bottoms coker naphtha heavy coker gas oil light coker gas oil sulfur. These difficultto process streams often contain high levels of silica, which decrease hdn catalyst activity. Honeywell uop introduces range of new hydrotreating. Hydroprocessing hydrotreating hydrocracking samson. Modeling of a fixed bed industrial hydrotreating unit. The configuration of a singlestage selectfining unit processing fbr olefinic naphtha fig. Naphtha hydrotreating kerosene hydrotreating diesel hydrotreating vacuum gas oil vgo hydrotreating.

Experion solution suites for uop technologies matt willmott. After the naphtha hydrotreating unit, naphtha is sent to an isomerisation unit or a catalytic reformer unit, which often use reforming catalysts. Typical flow scheme of the reactor section of a low severity nht. Pdf new plan to optimize the separation section of naphtha. Typically, fixedbed residue hydrotreating processes, such as the uop rcd unionfiningtm process, are used in conjunction with rfcctype units to address gasolinefocused markets. In case 2a, the naphtha complex was constrained to maximum unit flow rates. The increase in the api gravity of a product is calculated as. Pygas is a naphtha range product with high aromatics content used either for gasoline blending or as a feedstock for a btx extraction unit. Hydrotreating is a critical step in the refining process where hydrogen and a proprietary catalyst are used to pretreat petroleum and other products by removing contaminants before conversion into transportation fuels.

This reaction does not break any carbontocarbon bonds, but it does convert a molecule. Until about 1980, hydrotreating was a licensed technology being offered by a fairly large number of companies. Uop and hps together are an unmatched process technology provider. Uop hdc unibon process hydrotreating and hydrocracking uop hc hydrocracking uop unicrackingtm process. Our hydrotreating catalysts are designed for longer cycle lengths while meeting clean fuels specifications. The hydrocracking hc process is able to remove the undesirable aromatic compounds. Process work of a naphtha hydrotreating unit sunday, april 3, 2016 oil and gas nht naphtha hydrotreating unit is a functional to perform the decomposition components of sulfur, oxygen, nitrogen, and metal compounds. Hydrotreating is one of the most mature technologies found in the refinery, rivaling the history and longevity of the thermal process. Naphtha complex, typically consisting of naphtha hydrotreating nht, light. Uop s coker naphtha hydrotreating process removes contaminants from 100% coker naphtha or can be used for blends containing coker naphtha and other naphtha streams. The process also converts olefins and aromatics to saturated compounds. The common objectives and applications of hydrotreating.

The uop unicracking process is carried out at moderate temperatures and pressures over a fixed catalyst bed in which the fresh feed is cracked in a hydrogen atmosphere. When combined with our portfolio of bestinclass reforming catalysts, the ccr platforming process produces highoctane reformate which is used both for gasoline and as a source for btx aromatics. Pyrolysis gasoline is produced in an ethylene plant that processes naphtha, butane or gasoil. Naphtha and gas oil hydrotreating correlations the standard cubic foot of hydrogen per barrel of feed scfb required for complete sulphur removal is calculated as. Hydrocracking reactions proceed through a bifunctional mechanism. The hydrotreating process is commonly used to remove platforming catalyst poisons from straight run or cracked naphthas prior to charging to the platforming process unit. Honeywell uop also offers catalysts for naphtha hydrotreating and fcc gasoline desulfurization. Coker naphtha hydrotreating honeywell uop also offers catalysts for naphtha hydrotreating as well as fcc gasoline desulfurization. This scheme can employ a combination of hydrotreating and. Hydrodesulfurization an overview sciencedirect topics. Hydrocracking is a process that is suitable to produce products that meet or exceed all of the present environmental regulations. Honeywell uop provides a comprehensive range of hydrotreating catalysts, including demetallization, naphtha and distillate hydrotreating, pretreatment of feeds for fcc and hydrocracking units. Unity honeywell uop hydrotreating and hydrocracking catalyst portfolio.

Used to improve yields of middle distillate or naphtha products. Hydrotreating for sulfur removal is called hydrodesulfurization. The refinery also uses honeywell uop s hc and hc120 unity hydrocracking catalysts as part of its production process. Naphtha kerosene distillate ago lvgo hvgo vacuum residuum cat distillates gas oil hydrotreating dao isomerate gas alkyl feed alkylate polymerization naphtha gases butanes lpg reformate naphtha fuel oil bottoms distillates distillate hydrotreating cat naphtha cycle oils sda bottoms coker naphtha heavy coker gas oil light coker gas oil sulfur. Hydrocracking in petroleum processing springerlink. Uop s uf75 catalyst is formulated for top guard bed applications in hydrotreating or hydrocracking process units to remove arsenic compounds for the protection of downstream catalyst that are sensitive to arsenic to prevent premature catalyst deactivation. Customers can utilize the uop unicracking process and catalysts for high. In the past 25 years, hydrotreating catalysts have become commodities and the process has been offered without licensing fees. Process flow schemes for hydrotreating and hydrocracking are similar. Uop emre alliance for high quality lube and diesel production technology exxonmobil research and engineering company girish chitnis, tim hilbert, and tim davis. Naphtha hydrotreating reaction refinery engineering. Benefit from tailored performance through uop unity portfolio extra profitability for your hydroprocessing units within your refineries and petrochemical complexes complete solution from uop. Pdf modeling, simulation and optimization of naphtha. The naphtha hydrotreating process is also important to pretreat naphtha for downstream units, like paraffin isomerization and catalytic reforming, where severe.

In this paper, naphtha hydrotreating unit of a target refinery in iran was studied. Hydroprocessing, including fixed bed residue hydrotreating and ebullatedbed residue hydrocracking, has seen limited commercial application. The operating conditions of the selectfining process are similar to those of conventional hydrotreating. Furthermore, hydrotreating, a term often used synonymously with hds, is a catalytic refining process widely used to remove sulfur from petroleum products such as naphtha, gasoline, diesel fuel, kerosene, and fuel oil gary et al. Global demand for diesel is growing much faster than gasoline demand. Revamp of naphtha hydrotreating process in an iranian refinery. The metals contained in the naphtha feed are arsenic, lead, and to a lesser degree copper and nickel, which damage the reforming catalyst permanently. The polymer formation potential of coker naphtha is about 300 times the potential for sr naphtha.

Honeywell uop inaugurated the use of catalysts in the refining industry in 1931, beginning with solid phosphoric acid. When the process is employed specifically for sulfur removal, it is usually called. Its primarily used in the pretreatment of reforming feed but the end product can also be used as gasoline blend stock or as feedstock for petrochemicals production. Naphtha hydrotreating is an essential step for refiners to produce cleaner gasoline from different feedstocks. Isomerization process isomerization is the process in which light straight chain paraffins of low ron c6, c5 and c4 are transformed with proper catalyst into branched chains with the same carbon number and high octane numbers. Process engineer for the 21st century honeywell uop. Conjugated diolefins polymerise at normal hydrotreating conditions, and the polymers cause fouling of the reactor, resulting in pressure drop buildup. Since the introduction of the uop ccr platforming process in 1971, more than 250 units have been commissioned. This and subsequent processes significantly raised the yield of highoctane transportation fuels. Honeywell uop providing hydrotreating catalysts for enap. Most reforming catalysts contain platinum as the active material. Modeling, simulation and optimization of naphtha reforming process on aspen plus platform. Posttreating fcc naphtha is the minimum investment, least cost route for meeting the tier 2 gasoline sulfur and ulsd standards.

Unmatched process experience combined with the highestperformance catalysts. The hydrocracking process is uniquely suited, with proper optimization, to assist in solving these problems. The hydrotreated naphtha htn is fractionated into heavy naphtha. Process work of a naphtha hydrotreating unit proses industri. Heavy naphtha cut from the atmospheric crude oil distillation column in a refinery is sent to a naphtha hydrotreating unit. Design parameters for a hydro desulfurization hds unit for petroleum naphtha at 3500 barrels per day. Hydrocracking is a process that breaks down complex hydrocarbon molecules into simpler ones by using a catalyst and an elevated partial pressure of hydrogen gas. Hydrotreating is also used prior to catalytic cracking to reduce sulfur and improve product yields, and to upgrade middledistillate petroleum fractions into finished kerosene, diesel fuel, and heating fuel oils. The nht unit prepares feedstock for downstream reforming or isomerization units that have sensitive noble metal catalyst.

Hydrotreating is a process to catalytically stabilize petroleum products by converting. With partial conversion hydrotreating, treating the resulting fcc naphtha would not be necessary. From technical experts working together with you to catalysts that help optimize unit performance, you get it all with honeywell uop. Vacuum gas oils and resid feeds can contain a significant amount of vanadium and nickel.

Honeywell uop providing hydrotreating catalysts to produce. Coker naphtha places extraordinary demands on hydrotreating processes. Hydrotreatingdesulfurization process by uop process. During the hydrotreating process, the compounds that contain these metals are destroyed and the metals get. Design parameters for a hydro desulfurization hds unit.

Revamp of naphtha hydrotreating process in an iranian refinery article pdf available in petroleum and coal 511 january 2009 with 6,942 reads how we measure reads. Uop naphtha hydrotreating process honeywell process solutions. The nht unit prepares feedstock for downstream reforming or isomerization units that have sensitive noble metal catalyst systems. For more than 60 years, uop has been a leading provider of reforming solutions that meet customer needs for highoctane, lowsulfur gasoline. Two distinct types of catalytic sites are required to catalyze the steps in. The catalyst used in the naphtha hydrotreating process is composed of an alumina base impregnated with compounds of cobalt or nickel and molybdenum.