You are currently viewing: Literature



Catalysts for improved lubricating oil

Catalyst performance is paramount in producing high-value lubricants. Refiners trust catalysts from Criterion Catalysts & Technologies (Criterion) to deliver high yields of top-quality base oils. Consequently, our products are to be found in lubricant plants across the world.

Lubricant base oils are manufactured from vacuum gas oils and high-quality deasphalted oils. These feedstocks are improved through several processing steps, including “lube hydrocracking” dewaxing/isomerisation, hydrofinishing and hydrotreating. Criterion has a proven record of delivering high yields and enhanced quality lubricant base oils through its range of high-performance catalysts for use in these key processes.

LUBE HYDROCRACKING
Lube hydrocracking improves the yield and quality of lubricating oils by increasing their viscosity index, reducing their aromatic content and removing sulphur and nitrogen. Different combinations of our LH catalysts, which are based on CENTINEL, CENTINEL Gold and CENTERA technologies, are used to meet the needs of our lube hydrocracking customers. Refiners are increasingly following this processing step before further enhancement in catalytic dewaxing/isomerisation and high-severity saturation units

CATALYTIC DEWAXING/ISOMERISATION AND SATURATION
Catalytic dewaxing/isomerisation produces high yields of superior-quality base oils. Gas to liquids (GTL) processes create very pure unbranched hydrocarbon chains with virtually no aromatic content or unwanted heteroatoms. These waxes require isomerisation for conversion into lubricant base oils. Catalytic dewaxing using commercial Criterion catalysts is our most recent technology application and lies at the heart of lubricants production in the world’s largest GTL plant, the shell Pearl GTL facility in Ras Laffan, Qatar.

Saturation catalysts give catalytically dewaxed/isomerised products excellent final properties. Noble metal catalyst C-654 has been used for over a decade to produce highly saturated lubricants, including the final production step for medicinal white oils. C-684, our latest noble metal saturation catalyst, offers additional activity and stability in the presence of increased levels of sulphur and hydrogen sulphide.

View More

Dual-service hydrocracking

High-quality middle distillate products from partial conversion of heavy oil fractions and difficult feedstocks.Hydrocracking is an established and reliable method for transforming low-value heavy oil fractions into products with a higher value. Shell Global Solutions’ dual-service hydrocracking ...


Hydrotreating

Advanced process and catalyst systems to help optimize unit performance and maximize cycle length
Hydrotreating is an established refinery process for reducing sulphur, nitrogen and aromatics while enhancing cetane number, density and smoke point. Shell Global Solutions’ hydrotreating process ...


Reactor Internals

State-of-the-art hardware to help optimize catalyst utilization, maximize cycle length and increase process safety.
The performance of hydroprocessing reactors is determined not only by the catalyst loaded but also by the design of their internals. Shell Global Solutions’ internals technology ...


Shell sulphur technology platform

Consultancy and technologies to help take control of the sulphur paradox.
The reduced availability of light and sweet crudes, and the consequential increase in the cost of such feedstocks, makes it more and more attractive for refiners to take in heavier and sourer feeds. However, there are consequences. ...


Gas/liquid treating and sulphur processes

Helping oil and gas operators meet emission limits. Operators in the oil and gas industries face tough challenges in removing contaminants from their products, reducing emissions and meeting specifications. Shell Global Solutions’ gas/liquid treating and sulphur processes are available for license ...


FCC – leading-edge technology for enhanced reliability and environmental performance

Refiners are under immense pressure to improve the performance of their fluidised catalytic cracking (FCC) units. At the same time, there are changing market demands and environmental issues to consider. Shell Global Solutions helps by selecting technology from an extensive line-up to devise process ...


Distillation and separation technologies

Improve performance and minimize expenditure. Refinery operators want to improve their distillation performance to optimise their assets, minimise their expenditure and capital investment, and debottleneck their operations. Through the licensing of bulk crude distillation units, high-vacuum units, work-up ...


Dewaxing technologies for distillate applications

Cold flow properties improvement process. Catalytic dewaxing is used to improve cold flow properties of diesel fuels by selective hydroisomerization and hydrocracking of normal and slightly branched-paraffins. Normal paraffins have the most detrimental effects on the low-temperature properties of diesel ...


Thermal conversion – converting the bottom of the barrel into higher-value products

Faced with falling demand for low-value products such as residue fuel oil, operators are seeking proven, cost-effective technologies to help increase the value of their residue streams by revamping and debottlenecking existing units. Shell Global Solutions’ thermal conversion processes enable refiners ...


Refining catalysts – market-leading, high performance hydroprocessing solutions

Increasingly stringent fuel and environmental regulations, heavier crudes and feedstocks, and soaring energy demand have created complex, and sometimes conflicting, challenges for refiners operating hydroprocessing units. In response, many refiners are building new licensed units or revamping their existing ...