Transformative performanceBoost your margins and flexibility with Celestia™ hydroprocessing catalyst

Through unprecedented hydrodesulferization (HDS), hydrodenitrogenation (HDN) and aromatic saturation activity, Celestia ultra-high activity, bulk-metal hydroprocessing catalyst can provide you with step-out performance and operational flexibility.

Higher performance

• Highest activity hydrotreating catalyst in the industry

• Enables other catalysts and refinerywide debottlenecking

Margin improvement

• Crude flexibility

• Product slate improvement

• Short payback period

Key benefits

Celestia catalyst application Celestia catalyst is jointly developed by industry leaders ExxonMobil and Albemarle. Often deployed with its predecessor, Nebula®, the new Celestia catalyst provides operational flexibility, exceptional earnings and refinery optimization to add value beyond the hydrotreating battery limits. Commercial applications of these technologies are available in distillate hydrotreaters, as well as in light cycle oil (LCO) and vacuum gas oil (VGO) hydrocracker pretreaters.

Specialty hydroprocessing

Aromaticsaturation

HDS HDN

Rela

tive

activ

ity

Catalyst type

Supported NiMo

Nebula®

Celestia™

©2019 ExxonMobil and Albemarle Corporation. This document may not be distributed, displayed, copied or altered without ExxonMobil or Albemarle’s prior written authorization. To the extent ExxonMobil or Albemarle authorizes distributing, displaying and/or copying of this document, the user may do so only if the document is unaltered and complete, including all of its headers, footers, disclaimers and other information. You may not copy this document to or reproduce it in whole or in part on a website. Neither ExxonMobil nor Albemarle guarantee the typical (or other) values. Any data included herein is based upon analysis of representative samples and not the actual product shipped. The information in this document relates only to the named product or materials when not in combination with any other product or materials. We based the information on data believed to be reliable on the date compiled, but we do not represent, warrant, or otherwise guarantee, expressly or impliedly, the merchantability, fitness for a particular purpose, freedom from patent infringement, suitability, accuracy, reliability, or completeness of this information or the products, materials or processes described. The user is solely responsible for all determinations regarding any use of material or product and any process in its territories of interest. We expressly disclaim liability for any loss, damage or injury directly or indirectly suffered or incurred as a result of or related to anyone using or relying on any of the information in this document. ExxonMobil, the ExxonMobil logo, the interlocking “X” device and Celestia are trademarks of ExxonMobil. Albemarle with triangles and Nebula are registered trademarks of Albemarle Corporation.

Developed to deliver maximum value to the refinery.

Collaborate with us today. albemarle.com/celestia

Hydroprocessing valueThe Celestia™ catalyst activity, when used well, can help improve margins by delivering value beyond the hydrotreating unit battery limits in many ways, including:

• Processing challenged/opportunity crudes• Enabling feed scale-up• Maximizing high-value products in the refinery

Highest activityThe pioneering technology behind the Nebula® bulk-metal catalyst is well established to deliver industry-leading performance. Celestia has now demonstrated another step-change in hydrotreating activity. Its introduction enables new horizons in hydroprocessing capability and margin achievement.

Proven performanceBased on the expertise gained through more than a decade of commercial experience with Nebula, Celestia was developed by ExxonMobil and Albemarle as the next step in advancing catalyst technology. Since 2015, Celestia has demonstrated step-out performance and created new opportunities for growth at ExxonMobil facilities. Now it is available to refiners in fuels application.

Case study A stacked load of Celestia and Nebula catalysts was loaded into the pretreat section of a once-through heavy feed hydrocracker, processing a challenging blend of high endpoint virgin and coker vacuum gas oils (VGOs) to produce fuels and steam cracker feed. The unit pretreat reactor was loaded with approximately 30 percent Celestia/Nebula. The Celestia deployment was a first application; Nebula had been part of prior reactor loads.

The addition of the Celestia catalyst produced significant value to the VGO hydrocracker operation:• The feed rate of a highly challenging coker VGO was maximized• Significantly reduced Nitrogen slip • Increased aromatic saturation and unit conversion with higher diesel and jet yields• Improved product quality, including diesel cetane and jet smoke point• Hydrocrackate export quality improved, leading to higher profitability in an affiliate steam

cracker• Higher heat recovery leading to a reduction in furnace firing and significant energy savings

About usExxonMobil and Albemarle have been co-developing bulk-metal catalysts for more than 15 years. The complementary expertise of these industry leaders continues to deliver proven, reliable solutions for refiners around the world.

Value captured

in the refinery

Widen crude diet envelope

Alignment of turnaround schedules

Product blending

opportunities

Moving to ULSD

operation

Improverefinery net utilization

Energy efficiency

Pretreat with Celestia™ in single-stage hydrocracking (HDC)

NiMo

Celestia™

Nebula®

HDC