Chevron U.s.a. Inc.

Advanced Refining Technologies LLC

Theodorus Ludovicus Michael Maesen

Alexander E Kuperman

Yihua Zhang

Horacio Trevino

Andrew Rainis

Axel Brait

Xiaoying Ouyang

Jinyi Han

Viorel Duma

Jifei Jia

Stacey Ian Zones

Cecelia A Radlowski

Charles R Wilson

Gill M Malick

Yalin Hao

Xianghua Yu

Berend Smit

Edith Beerdsen

Henry Saternus

Allen Wayne Burton

Guan-Dao Lei

Ibrahim Uckung

Dennis John O'Rear

Cong-Yan Chen

Ujjal Mukherjee

Allen W Burton, Jr

Shuguang Zhang

Bruno C Nesci

Colleen T Miedona

Thomas Michael Rea

Varut Komalarajun

Bi-Zeng Zhang

Don Ramon Bushee

Bi-Zeng Zhan

William James Cannella

Kamala R Krishna

Dennis Dykstra

Darren P Fong

Christopher J Dillon

Ibrahim J Uckung

Hyunuk Ryu

Alex Yoon

Derek Blackwell

Richard Coser

Bao Quoc Le

Kamala Raghunathan Krishna

Bulk catalysts comprised of nickel, molybdenum, tungsten and titanium and methods for synthesizing bulk catalysts are provided. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

Tetrametallic bulk hydroprocessing catalysts

A hydrocracking process for converting a petroleum feed to lower boiling products. The process comprises hydrotreating a petroleum feed in a pre-treating zone in the presence of hydrogen to produce a hydrotreated effluent stream comprising a liquid product. At least a portion of the hydrotreated effluent stream is then passed to an MMS catalyst zone, and then to a hydrocracking zone. In one embodiment, the MMS catalyst zone comprises a self-supported multi-metallic catalyst prepared from a precursor in the oxide or hydroxide form. The percentage work of the hydrotreating in the pre-treating zone is maintained at a level of at least 56%.

Feed flexible hydrocracking operations

A layered catalyst reactor system and process for hydrotreatment of hydrocarbon feedstocks. The layered catalyst system reactors comprise vertical bed layers including a demetallization catalyst layer, multiple layers of supported hydrotreating catalyst layer, and multiple alternating layers of supported hydrocracking catalysts and self-supported hydrotreating catalysts. The arrangement of the catalyst layers mitigates the risk of temperature run-aways, with improvements in hydrotreatment performance.

Layered catalyst reactor systems and processes for hydrotreatment of hydrocarbon feedstocks

A catalyst system has been designed that disrupts the sedimentation process. The catalyst system achieves this by saturating key feed components before the feed components are stripped into their incompatible aromatic cores. The efficacy of this disruptive catalyst system is particularly evident in a hydrocracker configuration that runs in two-stage-recycle operation. The catalyst is a self-supported multi-metallic catalyst prepared from a precursor in the hydroxide form, and the catalyst must be toward the top level of the second stage of the two-stage system.

Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations

A hydrocracking catalyst comprising a zeolite beta having an average domain size from 800 to 1500 nm; a zeolite USY; a catalyst support; and at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table. The zeolite beta has an OD acidity of 20 to 50 &#x3bc;mol/g and the catalyst support comprises an amorphous silica aluminate and a second support material when the weight percentage content of the zeolite beta is less than the weight percentage of the zeolite USY, and, when the weight percentage content of the zeolite beta is greater than the weight percentage of the zeolite USY, the zeolite beta has an OD acidity of 20 to 400 &#x3bc;mol/g, the zeolite beta content is from 0.5 to 10 wt. % and the zeolite USY has an ASDI between 0.05 and 0.12 with a corresponding zeolite USY content of from 0 to 5 wt. %. A process for hydrocracking a hydrocarbonaceous feedstock using the catalyst is also described as is a method for making the hydrocracking catalyst.

Hydrocracking catalyst containing zeolite USY and low acidity and large domain size zeolite beta

This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (C/C) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst.

Method of preparing high activity hydrotreating catalysts

This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (C/C) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst. As a result, the hydrotreating catalysts have lower percent weight loss-on-ignition, higher activity and longer catalyst life.

High activity hydrotreating catalysts

This disclosure relates to supported multi-metallic catalysts for use in the hydrotreating of hydrocarbon feeds. The catalysts are prepared from a catalyst precursor comprised of at least one Group VIB metal, at least one Group VIII metal and an organic acid. The catalyst precursor is thermally treated to partially decompose the organic acid, then sulfided. The catalysts have a high carbon-as-carboxyl to total carbon ratio (C/C) as a result of a unique post-metal calcination method employed during the manufacture of the catalyst.

High activity hydrotreating catalysts and processes using the same

A hydrocracking catalyst is provided comprising: a) greater than 10 wt % of a zeolite USY having: i. a total OD acidity of 0.350 to 0.650 mmol/g; ii. an ASDI between 0.05 and 0.15; iii. a BET surface area greater than 600 m/g; iv. a SAR greater than 10; v. less than 45 vol % of pores greater than 2 nm; b) a support; and c) at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table. A process for hydrocracking using a hydrocracking catalyst to produce middle distillates is provided. A method for making a hydrocracking catalyst is also provided.

Middle distillate hydrocracking catalyst containing zeolite USY with enhanced acid sites

A process is provided for producing a heavy lubricating base oil by hydrocracking a lubricating oil feedstock at high yield. The lubricating oil feedstock contains a hydroprocessed stream that is difficult to process using a conventional catalyst system. The catalyst used in the process includes a mixed metal sulfide catalyst that comprises at least one Group VIB metal and at least one Group VIII metal. The process also provides for hydroisomerization and hydrofinishing process steps to prepare the lubricating base oil.

Lubricating base oil production

A second-stage hydrocracking catalyst is provided comprising:

Noble metal zeolite catalyst for second-stage hydrocracking

A hydrocracking catalyst is provided comprising:

Middle distillate hydrocracking catalyst containing zeolite beta with low OD acidity and large domain size

A hydrocracking catalyst is provided comprising: a zeolite beta having an OD acidity of 20 to 50 &#x3bc;mol/g and an average crystal size from 300 to 800 nanometers; a zeolite USY; wherein a wt % of the zeolite beta is less than the wt % of the zeolite USY; a support comprising an amorphous silica aluminate and a second support material; and at least one metal selected from the group consisting of elements from Group 6 and Groups 8 through 10 of the Periodic Table. A process for hydrocracking a hydrocarbonaceous feedstock is provided, comprising: contacting the hydrocarbonaceous feedstock with the hydrocracking catalyst under hydrocracking conditions to produce a hydrocracked effluent that comprises middle distillates. A method for making the hydrocracking catalyst is also provided.

Middle distillate hydrocracking catalyst containing zeolite USY, and zeolite beta with low acidity and large domain size

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Moraga, CA, United States of America

Theodorus Ludovicus Michael Maesen