Effect of hydrotreating FCC feedstock on product distribution

Salazar-Sotelo, Daniel; Maya-Yescas, Rafael; Mariaca-Domínguez, E.; Rodríguez-Salomón, Silvano; Aguilera-López, Martín

doi:10.1016/j.cattod.2004.07.040

Cited by 21 publications

(25 citation statements)

References 5 publications

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“…Ultimately, the LCO rich in multi-ring aromatics is selectively hydrogenated into naphthenic aromatics, and then this stream (hydro-LCO) is recycled into the FCC unit for further cracking reactions to produce high-octane-number gasoline. Besides the feedstock property − and operating conditions, , the catalyst composition also affects the product distribution remarkably. Although a series of studies have been conducted to investigate the influence of the catalyst composition on the products in conventional FCC processes, − the study on the catalyst effect in this FCC and hydrogenation coupling process is still lacking.…”

Section: Introductionmentioning

confidence: 99%

Fluid Catalytic Cracking of Hydrogenated Light Cycle Oil for Maximum Gasoline Production: Effect of Catalyst Composition

et al. 2017

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Selective hydrogenation and subsequent catalytic cracking of light cycle oil (LCO) from a fluid catalytic cracking unit is expected to produce more high-octane-number gasoline. In this process, the multi-ring aromatics are selectively hydrogenated and transformed to naphthenic aromatics, which are further converted into the gasoline fraction through cracking reaction. This work has systematically studied the effect of catalyst composition on the cracking performance of hydrogenated LCO (hydro-LCO). The results indicate that, the cracking activity of LCO was substantially improved after hydrogenation. In comparison to the ZSM-5-zeolite-based catalyst, both an efficient conversion of hydro-LCO to gasoline and a greatly enhanced hydrogen transfer reaction were obtained over the Y-zeolite-based catalyst, further resulting in a higher hydrogen utilization efficiency. In addition, the active acid sites for hydro-LCO cracking were inferred, and a possible reaction network was proposed.

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Section: Introductionmentioning

confidence: 99%

Fluid Catalytic Cracking of Hydrogenated Light Cycle Oil for Maximum Gasoline Production: Effect of Catalyst Composition

et al. 2017

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“…Table 1 gives a breakdown of the types of feeds being processed in the FCCU in 2006 [3]. These figures are expected to grow as refiners comply with low-sulfur gasoline and SO x emission regulations [6]. These figures are expected to grow as refiners comply with low-sulfur gasoline and SO x emission regulations [6].…”

Section: Sources and Trendsmentioning

confidence: 99%

“…The primary source of cracking activity comes from the zeolite Tab 6. The primary source of cracking activity comes from the zeolite Tab 6.…”

mentioning

confidence: 99%

Fluid Catalytic Cracking

Cheng¹,

Habib²,

Rajagopalan³

et al. 2008

Handbook of Heterogeneous Catalysis

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The sections in this article are Introduction and Overview History FCC Today Position in a Modern Petroleum Refinery Environmental Issues FCC Unit Hardware and Operations Unit Types Heat Balance Modes of Operation Regeneration Mode—Partial Burn vs. Full Burn Resid Processing Petrochemical Mode (Light Olefins) FCC Feeds Sources and Trends Molecular Types Characterization Effects on FCC Unit Operation Conradson Carbon and Feed Heaviness Feedstock Composition Metals: Ni , V , Na and Fe Sulfur Nitrogen The Chemistry of Catalytic Cracking Carbocations Formation of Carbocations Isomerization Reactions CarbonCarbon Bond Breaking by Beta‐Scission Hydride Transfer (also Referred to as Hydrogen Transfer) Heteroatom Chemistry: Sulfur FCC Catalysts Description and Formulation Zeolite Component Zeolite Modifications Zeolite Activity and Selectivity Effects Matrix Commercial Matrices Effect of Matrix on Selectivity Characterization ZSM ‐5 Additives FCCU Environmental Emissions Controls Overview—Catalyst Versus Hardware Particulates Carbon Monoxide ( CO ) Sulfur Oxides ( SO x ) Nitrogen Oxides ( NO x ) Laboratory Evaluations and Pilot Plant Testing Accelerated Aging of Catalysts Simulation of Metals Poisoning Reactor Types—Fixed Bed vs. Fluid Bed vs. Transport Phase Temperature Profile and Isothermal vs. Adiabatic Testing Summary and Future Trends in Catalytic Cracking

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“…For example, feeds with low relative solubility index produce more cokes. Moreover, feeds containing higher amount of metals cause faster deactivation of catalysts. − The other concern to mention is the strict environmental regulations. Reduction of SO x and NO x is to be considered in hydrotreating processes. , The other matter is to design more sophisticated reactors.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Pd/C Catalyst Deactivation Rate and Assessment of Optimal Operating Conditions of Industrial Hydropurification Process

Azarpour

Borhani

Alwi

et al. 2015

Ind. Eng. Chem. Res.

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One of the key concerns of the purification section of a purified terephthalic acid (PTA) production plant is the deactivation of palladium supported on carbon (Pd/C) catalyst. In this work, the deactivation rate model of 0.5 wt % Pd/C catalyst has been developed considering temperature, active surface area, and residual catalytic activity. Moreover, the optimal operating conditions of the industrial hydropurification process have been investigated. The results show that PTA production rate (PPR) can be improved by 5.4% through 18% increase in hydrogen flow rate. Furthermore, PPR can be increased by 7.6% via the temperature rise in the reaction mixture. The optimization results further reveal that PPR can be enhanced by 17.3% by improving the feed concentration under the normal operation by means of limiting the inlet 4-carboxybenzaldehyde concentration. The research findings can be applied in the actual working plant to enhance the efficiency of the hydropurification process.

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Effect of hydrotreating FCC feedstock on product distribution

Cited by 21 publications

References 5 publications

Fluid Catalytic Cracking of Hydrogenated Light Cycle Oil for Maximum Gasoline Production: Effect of Catalyst Composition

Fluid Catalytic Cracking of Hydrogenated Light Cycle Oil for Maximum Gasoline Production: Effect of Catalyst Composition

Fluid Catalytic Cracking

Prediction of Pd/C Catalyst Deactivation Rate and Assessment of Optimal Operating Conditions of Industrial Hydropurification Process

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