ARTICLES
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Revamp of Slovnaft’s hydrocracking unit
Oct-2012
A revamp to maximise middle distillate production and increase unit reliability and safety.The KHK hydrocracking unit at the Slovnaft refinery in Slovakia ...
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Retrofitting a glycol contactor to 
prevent carryover
Oct-2013
A revamp of glycol contactor column internals, following CFD studies, resolved problems with gas production caused by glycol carryover
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Acid gas treatment for giant LNG plant (TIA)
Apr-2015
Prosernat, an engineering company and licensor of Total’s amine based technology portfolio, AdvAmine, has announced the successful start-up of a major ...
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A few sweet tricks for sour gas
May-2014
Large volumes of acid gas (H2S and SO2-rich gas) are generated from various technologies used to sweeten sour off-gases, or acid gas.
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Revamping conceptual process design
Jan-2002
With the desirability of getting the maximum use out of existing equipment when revamps are planned a rigorous approach to CPD is required to avoid scope ...
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Sep-2007
Primary goals of a lube vacuum column revamp were to increase lube product fractionation and minimise HVGO product contaminants
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Revamping crude and vacuum units to process bitumen
Apr-2015
Revamping crude and vacuum units to process dilbit can involve extensive equipment replacement as well as major changes to the crude preheating scheme
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Increasing vacuum tower performance
Oct-2004
Advantages of using gravity flow liquid distributors in services where, historically, spray nozzles have been used, specifically in refinery vacuum tower ...
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Oil/water interface control for desalters
Oct-2007
Profiling instrument provides vertical real-time phase density measurement in desalter vessels. Benefits include reduced process upsets from interface ...
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Unlocking current 
refinery constraints
Apr-2008
When processing heavy feeds, technology based on residuum supercritical solvent extraction provides higher volumes of gas oil and DAO for conversion units. ...
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Reducing reactor turnaround time
Jan-2015
A refinery uses catalyst passivation technology for safer and more 
efficient turnarounds.
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Benchmarking and optimising maintenance for turnarounds
Oct-2016
A methodology can be used to benchmark scope and provide early and reliable forecasts of labour hours and costs during a turnaround
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Feb-2011
Major improvements to throughput and product specification required a revamp of catalyst and internals in a diesel hydrotreater
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Revamping a crude distillation unit
Feb-2020
A revamp project aimed to increase process safety and reduce high energy consumption in a CDU. It also delivered better product separation and higher diesel ...
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Refinery expansion and oil quality upgrading
Oct-2011
Optimisation of resources and effective integration of clean fuels technology enable older refineries to better match the economic performance of new ...
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Dealing with desalter cleaning challenges
Aug-2016
How to overcome lengthy and potentially dangerous challenges when cleaning a crude unit desalter.
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Use of non-abrasive ceramic materials in the FCCU
Oct-2017
Fluid catalytic cracking (FCC) technology has been a part of the petroleum industry since it was introduced in the US in 1942 to help feed the voracious ...
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Revamp of a reciprocating 
compressor unit
Jul-2015
A step-by-step guide to the revamp of a reciprocating compressor unit to meet increased hydrogen throughput
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Gasoline production in the age of shale oil, renewable fuel mandates, and tier 3 regulations
Apr-2014
The North American shale oil production surge has provided North American refiners with a seemingly bounty of high quality crudes.
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Correcting vacuum column design flaws
Apr-2017
Conventional design practices have been proven inadequate when maximising diesel recovery and gas oil cut point
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Hydroprocessing revamp configurations
Feb-2005
Upgrading existing hydrocrackers from single- to two-stage recycle offers significantly higher flexibility for increasing high-quality FCC feeds
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Energy savings from electric 
capacity control
Jul-2015
Updated stepless capacity control of reciprocating compressors saved energy and improved process stability at a petrochemicals site.
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Revamping a hydrocracker’s overhead condenser
Jul-2015
A stepwise approach solved seasonal issues affecting plans to increase a hydrocracker’s capacity
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Expanding FCCU wet gas compressor capacity
Apr-2007
Parametric correlations can predict WGC performance curves at different speeds and molecular weights. However, performance curves in a range of speeds ...
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Challenges and opportunities of an FCC revamp
Jul-2018
An FCC revamp for enhanced refinery performance and profitability called for close coordination with the technology licensor and contractors.
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Gasoline production in the age of shale oil, renewable fuel mandates, and tier 3 regulations
Apr-2014
The North American shale oil production surge has provided North American refiners with a seemingly bounty of high quality crudes.
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Estimating bitumen viscosity for revamps
Oct-2014
Accurate viscosity data for dilbit and its heavy residues define the scope of revamps required to process the feed in crude and vacuum units
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Reducing fuel consumption and CO2 emissions in fired heaters
Feb-2023
A global inventory of carbon dioxide (CO₂) emissions recently published by One Earth suggests that global cumulative emissions could be reduced by up ...
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Enhancements in Ethylene Oxide/Ethylene Glycol manufacturing technology
Aug-2017
The markets for ethylene oxide (EO) and ethylene glycol (EG) continue to see attractive growth. This means that at least one or two new plants will need ...
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Entrainment issues in vacuum column flash zones
Jan-2010
For a vacuum tower to operate effectively, the flash zone and the wash section must work together to provide the best possible feed quality to the sections ...
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Development of a refinery petrochemical master plan
Jan-1999
A master plan for a refinery/petrochemical complex justifies comprehensive study of all the variables, from market forecast to operating costs
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Jan-2018
Without the efforts of professional craft planners and logistics professionals, turnarounds will be a serious challenge
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Tray revamp for demethaniser ethane recovery
Oct-2011
As a first step in an ethane extraction plant’s operational improvement plan, a 
tray revamp was performed to improve both tray efficiency and ...
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Bayernoil mild hydrocracker CATnap application
May-2012
On 21 January, Bayernoil, Neustadt, successfully shut down the mild hydrocracker (MHC) using the CATnap catalyst passivation process applied by Cat Tech ...
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Retrofitting a glycol contactor to 
prevent carryover
Oct-2013
A revamp of glycol contactor column internals, following CFD studies, resolved problems with gas production caused by glycol carryover
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Jun-2017
Simple modifications to three carbon dioxide removal systems raised their efficiencies with short payback periods
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Upgrading a vacuum distillation tower (TIA)
Aug-2021
When a major oil refinery in India was constrained by its vacuum tower, it turned to Sulzer Chemtech to find a solution that would not only solve existing ...
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Dec-2022
Risk-based Inspection (RBI) has been around the refining and petrochemical industry for many years.
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Keeping your scaffolding under control during a turnaround
Dec-2022
During any Maintenance work or Turnarounds, there will be a need to reach inaccessible areas of the process plant, either for inspection or maintenance ...
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Reconfiguration of naphtha splitters using divided wall column technology
Feb-2023
Integration of DWCs into existing refining configurations reduces energy consumption and GHG emissions in distillation systems while also lowering operating ...
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Advanced thermoplastic polymer supports processing of harsh chemicals
Jul-2023
The proprietary NeXRing in VICTREX PEEK polymer from Sulzer Chemtech is ideal for supporting the processing of harsh chemicals, thanks to its high temperature ...
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Revamp of Slovnaft’s hydrocracking unit
Oct-2012
A revamp to maximise middle distillate production and increase unit reliability and safety.The KHK hydrocracking unit at the Slovnaft refinery in Slovakia ...
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Main fractionator water wash systems
Sep-2006
When properly designed and operated, main fractionator wash water systems can remove salt with little upset
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A balanced approach to vacuum tower flash zone/wash section design
Sep-2010
Revamping an existing vacuum column to operate at a higher feed rate, higher flash zone temperature, lower pressure, and different feed stock characterisation ...
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Advancements in retrofits for existing NGL recovery plants
Oct-2023
Better plant performance is achieved using proven retrofit techniques to upgrade a gas subcooled process or older plant with more recent retrofit tech ...
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Eight critical process vessel, tower and column corrosion mitigation projects
Feb-2024
Integrated Global Services (IGS) discusses eight global process vessel, column, and tower corrosion mitigation projects. This paper explores innovative ...
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Benchmarking and optimising maintenance for turnarounds
Oct-2016
A methodology can be used to benchmark scope and provide early and reliable forecasts of labour hours and costs during a turnaround
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High performance trays for a fractionator in an aromatics plant
May-2015
Distillation is a very important separation technology in refineries and downstream chemical processing. Mass transfer internals in distillation columns ...
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Dividing wall technology in distillation columns
Feb-2020
Increased throughput required the revamp of a gasoline unit. Space constraints and strict product requirements led to dividing wall column technology as ...
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Oct-2016
Large maintenance overhaul projects are complex, expensive processes, often with unpredictable challenges that call for best practice techniques.
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Planning for a refinery turnaround
Jan-2019
A consistent approach, coupled with an aligned team, leads to successful preparation at the front end of a turnaround.
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Online monitor slashes biocide dosage (TIA)
Nov-2018
In many systems, fouling and deposits are a serious problem which results in shutdowns, cleaning actions and unexpected costs for the customer.
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How ceramic solutions simplify field installation and address skilled labor gap
Oct-2018
Innovative ceramic designs simplify field installation and address critical manufacturing skills gap.
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Some myths about mechanical cleaning
Aug-2018
Because it has long been the only option when unit cleaning becomes unavoidable, the true cost of mechanical cleaning has been overlooked.
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Aug-2018
The benefits of including a non-intrusive approach within a risk based strategy for the inspection of pressure vessels.
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Challenges and opportunities of an FCC revamp
Jul-2018
An FCC revamp for enhanced refinery performance and profitability called for close coordination with the technology licensor and contractors.
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Jan-2018
Without the efforts of professional craft planners and logistics professionals, turnarounds will be a serious challenge
-
Use of non-abrasive ceramic materials in the FCCU
Oct-2017
Fluid catalytic cracking (FCC) technology has been a part of the petroleum industry since it was introduced in the US in 1942 to help feed the voracious ...
-
Enhancements in Ethylene Oxide/Ethylene Glycol manufacturing technology
Aug-2017
The markets for ethylene oxide (EO) and ethylene glycol (EG) continue to see attractive growth. This means that at least one or two new plants will need ...
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Troubleshooting crude column constraints
Jul-2017
Multiple limitations to operating capacity were identified and resolved during a column turnaround
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Jun-2017
Simple modifications to three carbon dioxide removal systems raised their efficiencies with short payback periods
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Revamping crude towers to meet 
bitumen specifications
Jun-2017
A revamp of crude column internals improved bitumen quality, increased output of light products, saved on energy costs and improved ease of operation
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Apr-2017
An evaluation of schemes to improve firing efficiency and ensure the reliability of combustion equipment
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Correcting vacuum column design flaws
Apr-2017
Conventional design practices have been proven inadequate when maximising diesel recovery and gas oil cut point
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Rapid waste heat boiler retubing at IPL Mount Isa sulphuric acid plant
Feb-2017
Effective energy recovery in sulphuric acid plants can drive the economics of the plant every bit as much as the actual production of sulphuric acid.
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Turnarounds deliver process improvements
Nov-2016
An extended unit shutdown is relatively rare and an opportunity to take every advantage to improve performance.
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Revamp cat feed hydrotreaters for flexible yields
Nov-2016
Revamping a cat feed hydrotreater to a flexible mild hydrocracker can be the most attractive economic option for adjusting the gasoline to diesel rati ...
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Revamping crude towers for quality and yield
Nov-2016
A successful revamp of distillation towers for increased diesel quality and yield depended on reliable design and accurate assembly
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Benchmarking and optimising maintenance for turnarounds
Oct-2016
A methodology can be used to benchmark scope and provide early and reliable forecasts of labour hours and costs during a turnaround
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FCC unit revamps at minimum cost
Oct-2016
Selective modifications for FCC unit revamps can deliver the best return 
on investment
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Troubleshooting vacuum systems
Oct-2016
Case histories of refinery vacuum tower problems solved are gleaned from five decades of experience.
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Oct-2016
Large maintenance overhaul projects are complex, expensive processes, often with unpredictable challenges that call for best practice techniques.
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Sep-2016
Automation at start-up, supported by dynamic simulation, is desirable if it can be accomplished with a modest amount of engineering effort
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Dealing with desalter cleaning challenges
Aug-2016
How to overcome lengthy and potentially dangerous challenges when cleaning a crude unit desalter.
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Rationalisation of and mitigation options for proposed EPA-HQ-OAR-2010-0682
Jul-2016
Part 2: Impact on FCC units. In May 2014, the EPA issued EPA-HQ-OAR-2010-0682, FRL-9720-4, RIN 2060-AQ75 for review and comment.
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FCC Catalysts and Additives
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ITW technologies online cleaning
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Operational Performance Improvement
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Bottom of the barrel upgrading
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Watlow’s thermal systems optimize your refinery
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Why custom catalysts?
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Innovative Measurement Technologies
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Process catalysts
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