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Impulse Technology for Middle Distillates
Loc Mac
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A Brief Introduction to HDT catalysis
Axens Impulse Technology
Impulse Product for Middle Distillates
Cobalt-Molybdenum: Impulse HR 1246
Nickel-Molybdenum: Impulse HR 1248
Agenda
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ImpulseTM Technology
Maximum promotion
Maximum active phase dispersion
Optimized support characteristics including metal-support interactions
Combination of maximal activity
with maintained superior stability
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A Brief Introduction to HDT catalysis
Axens Impulse Technology
Impulse Product for Middle Distillates
Cobalt-Molybdenum: Impulse HR 1246
Nickel-Molybdenum: Impulse HR 1248
Agenda
4
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HR 1246 Impulse For Maximum Refinery Profits
Impulse Technology Maximum amount of Mixed Sites
Maximum Dispersion Maximum Promotion
Optimized pore size distribution
Significant Activity Gain HR 1246 is 7C more active than HR 626
Axens HR 626 superior stability maintained Regenerable technology: Axens ex-situ tools ready for use. Commercially proven
Successful industrial implementation in a European Refinery.
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HR 1246 Impulse: Industrial Feedback
European Refiner and its ULSD unit
HR 1246 Performances after 1 year of Operation
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Zoom on HDS-2 ULSD Unit (1/2) Process
Hot scheme One reactor with two beds: ~ 110 m3 of catalyst Gas quench Treat gas injection upstream feed/effluent exchangers Amine scrubber on the recycle gas
Operating Conditions
H2 partial pressure: ~ 32-35 bar LHSV: 2.25 h-1 H2/HC: 180 Nm3/m3
Gas purity: 85 to 90 vol.% 7
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Zoom on HDS-2 ULSD Unit (2/2)
Feed (v/v)
LGO ~65 %
LCO ~12 %
Kero ~10 %
HCCS ~13 %
Main
Objective
8-9 ppm wt
Sulfur
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Choice of Impulse Catalyst
Open bidding procedure: Impulse HR 1246 chosen based on performances in pilot tests
In operation since January 2012
Catalyst Loading Details 30% reg. catalyst from refiner pool (1st bed)
70% fresh Impulse HR 1246 (2nd bed)
Dense Loading
Previous cycle: 100% Axens HR 626 (one regeneration)
Several different catalyst brands had previously been loaded
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Product Sulfur Content (ppm wt)
Days on
stream
Impulse HR 1246 Previous Catalyst
Continuous production of ULSD (average 9 ppm)
Average
9 ppm
Product Sulfur Content
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0.830
0.835
0.840
0.845
0.850
0.855
0.860
0 50 100 150 200 250
Main feed characteristics:
no significant difference
between the cycles
ppm wt
C
Property Value
Density (API) 34.8
Sulfur Content (wt %) 0.15 to 0.4
T-90 D86 (C) 340 to 350
Impulse HR 1246
0 50 100 150 200 250
Previous Catalyst
5000
4000
3000
2000
1000
0
Final BP
D86
Density
Sulfur
0 50 100 150 200 250
g/l
390
380
370
360
350
340
Main Feed Characteristics
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Processing More Feed
100% of design capacity no matter what feed
10% to 15% higher throughput with Impulse
Feed Throughput (% of design capacity)
Days on
stream
Impulse HR 1246
Previous Catalyst
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Increased Activity With Impulse
~10
C (~18
F) activity improvement
with Impulse HR 1246
WABT (
C)
Impulse HR 1246
Previous Catalyst
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A Brief Introduction to HDT catalysis
Axens Impulse Technology
Impulse Product for Middle Distillates
Cobalt-Molybdenum: Impulse HR 1246
Nickel-Molybdenum: Impulse HR 1248
Agenda
14
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HR 1248: HDS Activity Test
0
40
80
120
330 340 350 360 370
T = 10C
HR 648
Impulse HR 1248
Product Sulfur Content (ppm wt)
Impulse technology improved HDS activity by 10C
(C)
Temperature
Feed
70% SR / 30% LCO
European boiling range
Medium pressure
55 bars 800 psi H2 partial pressure
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Impulse HR 1248: Density Reduction Test
Major improvements in density reduction for
maximum Volume swell / Cetane Gain
0.842
0.844
0.846
0.848
0.850
0.852
0.854
330 340 350 360
HR 648 Impulse HR 1248
T > 15C
(g/cm3)
Temperature
(C)
Feed 70% SR / 30% LCO
European boiling range
Medium pressure 55 bars 800 psi H2 partial pressure
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Summary
A breakthrough technology for maximum refinery profits
Can process more difficult feedstock without cycle penalty
Longer Cycles Smaller reactor volume to be
considered for new project
Commercially proven 17