OUR PORTFOLIO

Axens commercial hydrocracking catalysts upgrade a wide range of heavy feedstocks to produce the desired slate of products while meeting ultimate quality targets. It relies on a combination of products derived from HRK, HDK and HYK series depending upon operator conversion targets (Figure 1).

HYK seriesHRK series

HDK series

Demetallization - HF/HMC series

HDSHDN

HDAHCK

HDM

Feed

Grading ACT series

Hydrofinishing - HR series

To Separation & Fractionation

Pretreating Section Cracking Section

HYK seriesHRK series

HDK series

Demetallization - HF/HMC series

HDSHDN

HDAHCK

HDM

Feed

Grading ACT series

Hydrofinishing - HR series

To Separation & Fractionation

Pretreating Section Cracking Section

Figure 1 - Typical catalytic arrangement

for once-through high conversion hydrocracking

MEET YOUR SELECTIVITY & ACTIVITY OBJECTIVES

HRK, HDK and HYK Series cover a wide range of operating conditions and enable adjustment of the desired selectivity and activity. Intrinsic performances of the catalysts are compared in Figure 2.

Figure 2 Catalyst performance mapping

The combination of HRK, HDK and HYK series is definitely the best solution to squeeze more middle distillates from heavy ends while reaching high conversion levels (Figure 3).

Increasing Middle Distillate Selectivity

Increasing Conversion Activity

HRK Series HRK + HDK Series

HRK + HYK Series

HRK + HDK + HYK Series

Figure 3 Catalyst combination performance

GET TOP PERFORMANCE & LONGEST CYCLE LENGTH

The following technologies or services ideally complement Axens Hydrocracking catalysts and make sure that they deliver their intrinsic performance in all operation contexts and reach target performance over long operating cycles: EquiFlow reactor internals for near-perfect

fluid distribution ACT top bed grading material for pressure drop

management HF & HMC demetallization catalysts Catapac homogeneous dense loading

technology to maximize reactor catalyst inventory and provide uniform bed density

Full tech. service packages including unit start-up, follow-up and optimization.

Spent Catalyst management services

High Conversion Hydrocracking Catalysts HRK / HDK / HYK Series A FULL RANGE OF CATALYSTS TO MEET YOUR UNITS OBJECTIVES

78

HRK SERIES

HRK 658 NiMo catalyst is distinguished by its high hydrodenitrogenation (HDN) activity and improved hydrodearomatization (HDA) activity as well as enhanced hydroconversion (HDC) capability. It is well suited for pretreating the most refractory vacuum gas oils for first stage hydrocracking operations with the objective to: reduce organic nitrogen and sulfur contents in the

feed to levels that enable better hydrocracking catalyst performance in the downstream reactor section

ensure optimal hydrogenation of the aromatic compounds in the feed thus easing the downstream hydrocracking duty.

HRK 658 is available in different sizes and shows good mechanical resistance. By analogy with other Axens hydroprocessing catalysts developed over the last years, special focus has been put in delivering a product with high intrinsic stability during operation and excellent activity retention by regeneration.

HRK 658 Catalyst

Shape Trilobe extrudate

Size, mm 1.2 or 1.6 or 2.5

Bulk crushing strength, MPa 1.5

HDK SERIES

As described Figure 2, HDK Series fills the gap between the HRK and HYK Series for both middle distillate selectivity and conversion activity.

HDK series is specially designed to maximize diesel production while delivering higher activity compared to conventional amorphous hydrocracking catalysts. HDK Series includes HDK 776, HDK 786 and HDK 766. Some key physical characteristics of these catalysts are shown below:

HDK 776 - HDK 786 - HDK 766 Catalysts

Shape Trilobe extrudate

Size, mm 1.6 or 2.5

Bulk crushing strength, MPa 1.5

ORGANIC NITROGEN REMOVAL IMPROVEMENT

Nitrogen removal (HDN) activity is of prime importance in the pretreating section since unconverted organo-nitrogen compounds inhibit the hydrocracking catalysts in the downstream reactors. The combination of HRK Series and HDK Series is the most effective way to maximize HDN activity in the pretreatment section. It has proved to be superior to conventional hydroprocessing catalyst only options. HDN boost is of particular interest when processing heavier and more refractory feedstocks with high organo-nitrogen content.

IMPROVED HEAVY FRACTION CHARACTERISTICS

HRK and HDK series combination is well suited to improve the unconverted fraction quality when operating in high hydrocracking conversion mode, particularly when this fraction is devoted to high VI (Viscosity Index) lube oil production. Improvement in the VI of the unconverted fraction when using a combination of HRK and HDK catalysts instead of HRK alone is illustrated in Figure 4.

135

100

65

VI after dewaxing

Waxy Residue Yield, wt% of Feed0 25 50 75 100

130

HRK

HRK + HYK

HRK + HDK + HYKHRK + HDK

Figure 4 VI of the hydrocracking unconverted fraction vs.

waxy residue yield

HYK seriesHRK series

HDK series

Demetallization - HF/HMC series

Feed

Grading ACT series

Hydrofinishing - HR series

To Separation & Fractionation

Pretreating Section Cracking Section

Pretreating Section HRK Series + HDK Series

Cracking Section HYK Series

ZEOLITE HYDROCRACKING CATALYSTS

Axens has developed extensive experience in zeolite hydrocracking catalysts since the commercialization of the first load in 1985.

HYK 700 series, Axens latest generation zeolite products suite including HYK 732, HYK 742, HYK 752 and HYK 762, displays significantly higher activity as compared to the previous generation (HYC 600 series) coupled to utmost selectivity, improved hydrogenation activity, extended long-term stability and cycle lengths.

Optimum combination of catalysts delivers high yields in desired products.

HYK 700 series is very competitive in activity/selectivity as compared to other products on market place.

OBJECTIVES AND APPLICATIONS

HYK 700 catalysts are loaded downstream of high activity HRK series pre-treatment catalyst combined with HDK series intermediate hydrocracking catalyst.

HYK 700 catalysts are specifically designed to convert feeds such as VGO, HCGO and DAO into high quality middle-distillates, namely kerosene and diesel. Thanks to their high hydrocracking activity, HYK 700 series catalysts are well suited for the processing of heavier and more refractory hydrocracker feedstocks as they convert the less reactive components in unconverted bottoms recycle streams. The higher activity in HYK 700 catalysts enables them to be extremely tolerant to nitrogen. HYK 700 catalysts are well suited for any high conversion hydrocracker configuration including once-through, single-stage with recycle and two-stage units.

KEY FEATURES

HYK 732, HYK 742, HYK 752 and HYK 762 catalysts are the result of step-out improvements made in the fields of alumina, metal-support interaction, zeolite structure and molecular modeling. They have benefited from improvements in both the acidic (hydrocracking) and hydrogenation functions while maintaining a carefully controlled balance between them. This was made possible by: optimizing the dispersion of zeolite crystals in the

alumina matrix improving metal impregnation technology to

reduce the distance between acid and metal sites increasing the hydrogenation function efficiency

using a new alumina matrix with a higher metal loading capacity

optimizing porosity to provide better diffusion of reactants and products while maintaining high middle distillates selectivity (Figure 5).

Figure 5 - Molecules adsorbed

in a zeolite pores

The control and the optimization of each step of our manufacturing process lead to fully regenerable catalysts with very good mechanical properties.

HYK seriesHRK series

HDK series

Demetallization - HF/HMC series

Feed

Grading ACT series

Hydrofinishing - HR series

To Separation & Fractionation

Pretreating Section Cracking Section

HIGH HYDROCRACKING ACTIVITY & IMPROVED SELECTIVITY

HYK 700 metalzeolite catalysts cover a wide range of operating conditions which enable adjustment of the desired activity and selectivity (Figure 6).

Reactor Temperature

Conversion 370C-, wt %

60

70

80

90

100

HYK 762HYK 752HYK 742HYK 732

Figure 6 - Effect of operating temperature

on catalyst conversion

The horizontal distance (temperature differences) between curves illustrates the difference in activities for equivalent net feed conversions.

Key physical characteristics of HYK 700 series are given below: HYK 732 - HYK 742 - HYK 752 HYK 762 Catalysts

Shape Trilobe extrudate

Size, mm 1.6 or 2.5

Bulk crushing strength, MPa 1.4

CATALYST BENEFITS

HYK 700 catalysts, and especially the most active members of the series, are ideal for: processing heavier and more refractory feeds increasing throughput increasing cycle length operating with higher levels of nitrogen slip and

NH3 pressure, thus increasing pre-treating catalyst life or extending unit overall run length in operations limited by the pretreatment section.

STABLE & ROBUST

HYK 700 series catalysts are built on Axens tradition of robust and reliable hydrotreatment catalysts and provide: high stability excellent resistance to the most refractory feeds tolerance to unit upsets and H2 shortages good activity retention after conventional

regeneration strong mechanical resistance easy handling.

HRK, HDK & HYK SERIES - COMMERCIAL EXPERIENCE

As of November 2011, our HRK, HDK and HYK series catalysts have already 69 references worldwide.

HRK + HDK + HYK Definitely, the winning combination:

o Squeeze more middle distillates from heavy ends o Reach high conversion levels o Improve hydrodearomatization (HDA) activity o Enhance hydrodenitrogenation (HDN) activity o Maximize unit cycle length Boost unit profitability Increasing Middle Distillate Selectivity

Increasing Conversion Activity

HRK Series HRK + HDK Series

HRK + HYK Series

HRK + HDK + HYK Series

Oct

11-H

RK-H

DK

-HYK

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