ARTICLES
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Optimising sweep gas flow in a flare header
Oct-2012
How to calculate the minimum flow of flare header sweep gas needed to maintain safe conditions
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Calculating column relief loads
Apr-2010
Conventional, steady-state and dynamic simulation techniques are compared in a study of relief loads for failure modes applied to a distillation colum ...
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Treating high CO2 gases with MDEA
Apr-2009
Using MDEA as a solvent for high levels of CO2 removal requires careful process modelling using accurate simulation
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Simulation model increases visbreaker conversion
Jan-2011
Introduction of advanced analytical monitoring, chemical treatment and process optimisation has raised the profitability of a visbreaker unit
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Jul-2013
A simulation model compares accurately with actual operating data to provide reliable predictions of catalyst lifetime in naphtha reforming
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Sour water stripping Part 2: phenolic water
Aug-2014
In addition to ammonia, hydrogen sulphide, and carbon dioxide, phenolic sour water may contain a host of so-called heat stable salts (HSSs), hydrogen cyanide, ...
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Simulation of a visbreaking unit
Apr-2011
Simulation of a commercial visbreaking unit supports optimisation of the unit’s performance. The visbreaking unit utilises vacuum residue as a feed and ...
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Sour water stripping Part 3: waste water treatment
Sep-2014
Mass transfer rate-based simulation is used in a case study to examine two of the important factors that determine the performance of a 2-Stage Chevron ...
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Managing vanadium from high metals crude oils
Sep-2003
Improvements in process and equipment design with regard to crude unit and delayed coker distillation column performance can reduce metals content
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Practical hydrocarbon dew point specification for natural gas transmission lines
Mar-2011
Hydrocarbon liquid dropout can cause a number of problems in gas transmission lines, including increased pressure drop, reduced line capacity and equipment ...
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Sour water stripping Part 1: non-phenolic water
Aug-2014
Most non-phenolic sour water strippers for removing ammonia and hydrogen sulphide from are built with 30 to 60 trays and are usually designed using equilibrium ...
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Stepwise simulation of vacuum transfer line hydraulics
Oct-2009
A stepwise hydraulic calculation determines the pressure profile of a vacuum transfer line by linking the hydraulic model to process simulation result ...
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Identifying poor heat exchanger performance
Sep-2007
Identifying root causes of poor crude unit debutaniser reboiler performance and low-cost solutions that help meet exchanger original design conditions
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Simulating optimal tank farm design
Apr-2005
Development of a computerised model incorporating Monte Carlo operational risk simulation with the optimisation power of linear programming
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Tube rupture in a natural gas heater
Feb-2016
Dynamic simulation supports the use of a pressure safety valve over a rupture disk in the event of a tube rupture
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Improving refinery distillation operations
Apr-2008
The outline of a route map or staged approach to unit process improvement follows similar steps to those taken when installing advanced controls on a ...
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Jan-2009
In part I, reaction kinetics, cracking chemistry, pressure balance, catalyst and vapour residence times, and fluidisation were considered. In part II, ...
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Determining safety distance in process design
Jan-2015
Safety distance determination is a key design issue that may have a dramatic impact on a refinery construction project
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Crude oil cargo selection and time frame of LP optimisation
Jul-2010
Combinatorial selection is the most rigorous and theoretically correct method of crude oil cargo evaluation. Efficient algorithms are key to its imple ...
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Refining/petrochemical integration: a new paradigm
Sep-2013
The global trend in motor fuel consumption favours diesel over gasoline. There is a simultaneous increase in demand for various petrochemicals such as ...
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Simulating and monitoring H2 plant operations
Oct-2012
A computer program was developed to enable a refinery to monitor its hydrogen production daily to foresee potential operating problems
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Making sense of amine absorber temperature profiles
Apr-2017
Simulation is a powerful tool for ensuring designs are robust, operating conditions are optimal, and troubleshooting can be effectively and efficiently ...
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The role of tail gas treating unit quench towers
Jun-2016
A quench tower cools gas entering a tail gas amine unit but also protects the amine against SO2 breakthrough.
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Optimisation of a diesel hydrotreating unit
Jan-2015
A model based on operating data is used to meet sulphur product specifications at lower DHT reactor temperatures with longer catalyst life
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Mar-2007
In amine sweetening units, the heat of absorption and VOC and BTEX solubility have been found to vary significantly with acid gas loading, as well as with ...
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Simulation model increases visbreaker conversion
Jan-2011
Introduction of advanced analytical monitoring, chemical treatment and process optimisation has raised the profitability of a visbreaker unit
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Calculating column relief loads
Apr-2010
Conventional, steady-state and dynamic simulation techniques are compared in a study of relief loads for failure modes applied to a distillation colum ...
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Are produced water emission factors accurate?
Oct-2016
Rules of thumb are often used for estimating emissions from Produced Water storage tanks, especially when entrained hydrocarbons are present.
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Making sense of amine absorber temperature profiles
Apr-2017
Simulation is a powerful tool for ensuring designs are robust, operating conditions are optimal, and troubleshooting can be effectively and efficiently ...
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Stepwise simulation of vacuum transfer line hydraulics
Oct-2009
A stepwise hydraulic calculation determines the pressure profile of a vacuum transfer line by linking the hydraulic model to process simulation result ...
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Simulation of Claus unit performance
Nov-2019
Simulating a sulphur recovery unit using a fundamental approach enables the effects of process changes on a host of performance metrics to be reliably ...
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Improving refinery distillation operations
Apr-2008
The outline of a route map or staged approach to unit process improvement follows similar steps to those taken when installing advanced controls on a ...
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Factors affecting Claus waste heat boiler design and operation
Mar-2019
The Claus Waste Heat Boiler (WHB) is a critical piece of equipment in a Sulphur Recovery Unit (SRU); its fundamental purpose is as a heat transfer device ...
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Simulating and monitoring H2 plant operations
Oct-2012
A computer program was developed to enable a refinery to monitor its hydrogen production daily to foresee potential operating problems
-
Refining/petrochemical integration: a new paradigm
Sep-2013
The global trend in motor fuel consumption favours diesel over gasoline. There is a simultaneous increase in demand for various petrochemicals such as ...
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Accuracy of measured lean amine H2S loading
May-2018
When solvent regeneration is done robustly the most accurate assessment of lean loadings can be by simulation rather than by measurement.
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Sour water stripping Part 3: waste water treatment
Sep-2014
Mass transfer rate-based simulation is used in a case study to examine two of the important factors that determine the performance of a 2-Stage Chevron ...
-
Sour water stripping Part 1: non-phenolic water
Aug-2014
Most non-phenolic sour water strippers for removing ammonia and hydrogen sulphide from are built with 30 to 60 trays and are usually designed using equilibrium ...
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The role of tail gas treating unit quench towers
Jun-2016
A quench tower cools gas entering a tail gas amine unit but also protects the amine against SO2 breakthrough.
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Sour water stripping Part 2: phenolic water
Aug-2014
In addition to ammonia, hydrogen sulphide, and carbon dioxide, phenolic sour water may contain a host of so-called heat stable salts (HSSs), hydrogen cyanide, ...
-
Tube rupture in a natural gas heater
Feb-2016
Dynamic simulation supports the use of a pressure safety valve over a rupture disk in the event of a tube rupture
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Best practice for refinery flowsheets
Aug-2019
Refinery-wide flowsheets can demonstrate the true representation of changes in key operating variables and their associated impact on refinery operati ...
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Using pinch technology in operations?
Sep-2013
Pinch Technology is a well established concept, and a tool used to optimise waste heat recovery and design efficient heat integration schemes in a wide ...
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Impact of light tight oils on distillate hydrotreater operation
Apr-2016
Addressing the range of challenges brought to diesel and jet production by light tight oil processing
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Nature of errors in machinery diagnostics
Jan-2020
A reliability theory has been developing for almost 70 years, and all the time scientists, engineers and practitioners attempt to point out an instance ...
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Countering hydrate formation in an NGL recovery unit
May-2018
Process modelling can be used to validate data from the plant and identify the most effective approach to process optimisation.
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Monitoring and simulation resolves overhead corrosion
Mar-2016
Online corrosion monitoring in tandem with simulation modelling identified the root cause of corrosion in a crude unit overhead
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SRU simulation getting the properties right
Aug-2016
Reliable, predictive simulation software for SRUs requires recognition of many of the unique properties and behaviours of sulphur.
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Data operations transform fuels value
May-2019
A refiner applied advanced analytics to develop techniques for processing opportunity crudes which minimise negative effects on the plant.
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Optimising sweep gas flow in a flare header
Oct-2012
How to calculate the minimum flow of flare header sweep gas needed to maintain safe conditions
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HDXRF vs ICP for nickel and vanadium in crude oil
Sep-2020
(White Paper) - Technology introduced over the last decade, such as horizontal drilling and hydraulic fracturing, has led to new sources of light tight ...
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Planning to counter economic turbulence
Sep-2020
Synchronising engineering and planning models should be a key aim to support the resilience and agility needed for economic recovery
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Remote management of hydrogen production
Sep-2020
Remote monitoring and control can improve safety, detect problems early, and promote efficient operations through modelling and analysis of hydrogen p ...
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Troubleshooting premature tower flooding
Aug-2020
Thorough analysis of field data and tray hydraulics together with gamma scanning were key factors in the successful troubleshooting of premature flooding ...
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Molecular management for refinery-petrochemical complexes
Aug-2020
Designing a digital twin for process simulation of an integrated complex enables enhanced molecular management to deliver higher margin.The future comprises ...
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Cutting the cost of refinery process control and CEMS gas analysis
Aug-2020
Developments in equipment functionality to reduce maintenance costs, innovative service delivery which can enable outsourcing and an array of digital solutions ...
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Cross-unit APC boosts downstream performance
Jul-2020
Manipulating advanced process control in a crude unit reduced constraints in a downstream diesel hydrotreater
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Increase duty in tube side condensers
Jul-2020
A retrofit is shown to improve several aspects of tube side condensation processes.
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Downtime damages environmental performance too
Jul-2020
Advanced technologies can reduce the environmental impact of unexpected shutdowns.
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Where transparency-driven value comes from
Jan-2020
Safe and sustainable operation is a key factor for the profitability of every processing business, such as a petroleum refinery.
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Nature of errors in machinery diagnostics
Jan-2020
A reliability theory has been developing for almost 70 years, and all the time scientists, engineers and practitioners attempt to point out an instance ...
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Fouling and cleaning analysis of a heat exchanger network
Dec-2019
Analysis of a complex heat exchanger network employs a digital twin model to establish a programme for fouling and cleaning.
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Simulation of Claus unit performance
Nov-2019
Simulating a sulphur recovery unit using a fundamental approach enables the effects of process changes on a host of performance metrics to be reliably ...
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Digitalisation is only scratching the surface
Nov-2019
Digitalisation usually means upgrading a few elements of technology or workflows, leaving a partial digital twin when a holistic approach is needed.
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Best practice for refinery flowsheets
Aug-2019
Refinery-wide flowsheets can demonstrate the true representation of changes in key operating variables and their associated impact on refinery operati ...
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Jul-2019
The availability of devices capable of creating an image of the infrared radiation emitted by an item of process equipment such as the CO2 absorber in ...
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Real-time total chlorine monitoring to ensure optimal desalter performance
May-2019
Chlorides are always present in raw crude oils and their concentrations vary greatly. Depending on origin, transportation methods, and process conditions, ...
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Claus waste heat boiler economics Part 2: mechanical considerations
May-2019
The design of a cost effective waste heat boiler faces many, often opposing factors affecting the performance and reliability of the exchanger.
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Digital twins enhance LNG plant performance
May-2019
Digitalisation technologies offer new and disruptive ways to overcome the challenges of increasing margin, reducing carbon emissions and addressing talent ...
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Data operations transform fuels value
May-2019
A refiner applied advanced analytics to develop techniques for processing opportunity crudes which minimise negative effects on the plant.
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How DEA affects CO2 removal by Hot Pot
Apr-2019
In ammonia production, CO2 removal from synthesis gas is an important processing operation.
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Factors affecting Claus waste heat boiler design and operation
Mar-2019
The Claus Waste Heat Boiler (WHB) is a critical piece of equipment in a Sulphur Recovery Unit (SRU); its fundamental purpose is as a heat transfer device ...
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Claus waste heat boiler economics Part 1: process considerations
Feb-2019
The design of the waste heat boiler has a critical role to play in determining process operations, reliability and economic performance in the sulphur ...
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Hydrocarbon Processing Gas Analysis Magazine - Issue 4 2019
Jan-2019
Accurate, reliable oxygen (O2) measurements are essential in many HP applications, delivering the readings that support process efficiency, safety and ...
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Tray revamp restores crude column performance
Jan-2019
Retrofitting the packed top section of a crude atmospheric tower with high capacity trays improved separation efficiency
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HDXRF vs ICP for nickel and vanadium in crude oil
Sep-2020
(White Paper) - Technology introduced over the last decade, such as horizontal drilling and hydraulic fracturing, has led to new sources of light tight ...
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Compressor optimization and upgrades
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FCC catalysts & additives
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Processing heavy canadian crude
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Galexia™ hydroprocessing platform
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Catalyst portfolio
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ITW technologies online cleaning
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OpX® Digital
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Worldwide refinery processing review
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Independent catalyst testing video
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Downstream industry process diagnostics
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