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Enhancementof high quality motorgasoline production.Under what conditions С7-cutisomerization is required?
17th Russia & CIS Refining TechnologyConference & Exhibition - RRTC 2017
Alexander Shakun, President and CEO, SIE Neftehim, LLC
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World trend of motor gasoline production
800
850
900
950
1000
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Prod
uced
, MM
t
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Russian oil processing industry performancesin 2012-2016
15,57,9 5,7 2,5 2,2
13,4
6,44,1
3,6 0,6
9,3
24,4 28,5 33,1 37,2
2012 2013 2014 2015 2016
38,2 38,7 40,039,238,3
Motor gasoline production, MMt
K5 +4.1 MMt (+12.4%)2015-2016 Dynamics
K3 and lower К4 К5
45,633,5
26,113 11,4
6,3
7,46,1
7,40,2
17,531,1
45,155,7
64,8
2012 2013 2014 2015 2016
69,4 77,372,0 76,1 76,4
Diesel oil production, MMt
2015-2016 Dynamics K5 +9.1 MMt (+16.3%)
K3 and lower К4 К5
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K5 environmental standard motor gasoline productionin the first half of 2017 in the Russian Federation
98 RON 1%
95 RON29%
92 RON51%
80 RON19%
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Main arrangements of motor gasoline blending
95 RONIsomerate
Reformate
Cat-crackedgasoline
Alkylate
MTBE, TAME 95 RON
Isomerate
Reformate
MTBE, TAME
Option I
Option I
Option II
Option II
Disadvantages
- High content of olefins and sulfur in cat-cracked gasoline- Limited amount of alkylate
- High content of aromatics due to high share of reformate
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CHALLENGES OF REFINERY IN MOTORGASOLINE PRODUCTION
1. Deterioration of fixed-bed reformer performances due to catalystcoking and out-of-schedule shutdowns caused by poisoning.The share of fixed-bed reformers is still high.
2. Out-of-schedule shutdowns of isomerization unitsdue to highly-sensitive catalyst’s poisoning andexcessive corrosion.
3. High share of reformate with increasedaromatics content in motor gasoline production.
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Modern tasks of oil processing in productionof high octane EURO-5 motor gasoline
Increase of reforming catalysts’ service cycle in fixed-bed reformers up to 3-4 yearsfor «severe operation» with production of 97-99 RON reformate
Enhancement of reformate yield in operating fixed-bed reformers up to 90-92%due to minimization of catalyst coking and pressure decrease
Enhancement of CCR units operation due to improved catalyst selectivityand strength
Increase of isomerization unit turnaround period up to 6 years
Increase of period between regeneration for isomerization units up to 12 years
Maximization of non-aromatic isomerate share by means of C7-cut redistributionfrom reforming feed to isomerization feed
Construction of n-butane isomerization units to obtain feed for alkylateand MTBE production
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Recent modifications of reforming catalystsproduced and supplied by SIE NEFTEHIM, LLC
BRAND SERVICE MODE SERVICECYCLE
SERVICELIFE
REFORMATEYIELD
REF Fixed-bed Up to 100RON
Up to 4 years Not less than8 years
Up to 90%
RC CCR Up to 110RON
- Not less than8 years
Up to 92%
Physical and chemical properties of catalyst supportLoading conditions for platinum, promoters, and modifiersConditions of drying and calcinationActivation conditions in a reforming unitConditions of reformer feed preparationManagement of all production and operation stagesfor reforming catalyst (scientific and technical support)
Factors, determining catalytic properties of reforming catalysts
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SHARE OF DIFFERENT ISOMERIZATIONTECHNOLOGIES IN RUSSIA
Zeolite catalysts(Süd-Chemie) 6%
Chlorinatedcatalysts(UOP, Axens) 31%
Oxide sulfatedcatalysts(SIE Neftehimand UOP) 63% AGGREGATE CAPACITY
OF ISOMERIZATION UNITSIN RUSSIA ~ 9105 KTA
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BENEFITS OF OXIDE SULFATEDISOMERIZATION CATALYSTS
Long-term service lifeand service cycle
Possible activity restorationvia regeneration
Tolerance to H²O and sulfur traces
Low corrosiveness
12 years service life has beenachieved over SI-2 catalyst
12 years service cycle withoutregeneration has been achievedover SI-2 catalyst
Catalyst SI-2 totally restores its activity after removal of impurities from feed and hydrogen gas
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COMMERCIAL INTRODUCTION OF N-BUTANEISOMERIZATION PROCESS BASED ON OXIDESULFATED CATALYST
2015
2016- 2017
2017- ...
200 KTA Isomalk-3 unit, Shandong Sincier Petrochemical Co., Ltd (China), a part of MTBE complex
Construction and start-up of 2 new Isomalk-3 units in China
Technology promotion in different countries
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ISOMALK-3 UNIT, SHANDONG SINCIERPETROCHEMICAL CO., LTD
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C7-CUT (70-105°C) ISOMERIZATION PROCESS ISOMALK-4
Octane number enhancement for 70-105°C straight run cutfrom 65 up to 85 numbers and complete hydrogenation of aromatics
Recovery of 70-105°C cut from reformer feed allows for increasingthe reformate yield and octane
Involvement of 70-105°C cut isomerization into processing circuit allowsfor producing EURO-5 motor gasoline without addition of alkylateand cat-cracked gasoline
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CONCLUSION
1. Efficiency improvement of high octane EURO-5 motor gasoline production requires enhancement of naphthaprocessing technologies in the following ways:
2. All necessary technologies for production of EURO-5 motor gasoline are developed in Russia.
Creation of catalysts for fixed-bed units with long-term service cycle (up to 4 years) for “severe”operation (up to 99-100 octane numbers).
Creation of CCR reforming catalysts with enhanced mechanical strength and selectivity.
Further increase of pentane-hexane isomerization units’ share based on oxide sulfated catalysts,providing unit service cycle up to 6 years and more.
Construction of n-butane isomerization units to provide feed for alkylation and MTBE units.New technology Isomalk-3 providing stable unit operation has been introduced.
Transfer of 70-105°C cut from reformers to isomerization units for refineries with limited alkylate amount.C7-cut isomerization technology Isomalk-4 has been developed.
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Alexander Shakun,President and CEO, SIE Neftehim, LLC
THANK YOU!
www.nefthim.comAddress: 4 Zakharov Str.,350007, Krasnodar,Krasnodar Region, RussiaTel.: +7 (861) 267-80-31Fax: +7 (861) 267-80-40e-mail:[email protected]