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About Axens

Axens is an international provider of process licensing technologies, catalysts, adsorbents and services, with a global reputation for basic engineering design excellence. The main scope of Axens' business is focused on the conversion of oil, coal, natural gas and biomass to clean fuels ...


Air emissions modeling advances for oil and gas production facilities

A perfect storm has dramatically changed the way oil and gas production facilities are designed and permitted for air quality compliance. Air quality regulations have been strengthened due to rule changes in the Clean Air Act (40 CFR 60, Subpart OOOO), drastically reducing the allowed ...


Approaches to simulating distillation and absorption

Distillation of spirits has been practiced since the time of the ancient Greeks who ascribed sacred powers to the liquids that resulted from refining wine using stills such as the one shown in Figure 1. Dionysian cults incorporated these early spirits into religious rituals. Distillation ...


Axens’ technologies, products and services

Axens is an international provider of process licensing technologies, catalysts, adsorbents and services, with a global reputation for basic engineering design excellence. The main scope of Axens' business is focused on the conversion of oil, coal, natural gas and biomass to clean fuels ...


Celebrating a century of innovation in the oil & gas industry

UOP celebrates its 100th year in business in 2014, and in many ways our history is analogous to the development of the world’s oil and gas industry. We have accomplished many great things during the last century. For that, we owe a tremendous debt of gratitude to our customers, who ...


Designing deepcut vacuum units that really work

Every barrel of vacuum gas oil (VGO) you can save from being reduced to coke in the delayed coker unit is a barrel more that can go to the FCCU. That’s a good reason to raise HVGO cutpoint. But how to do it? Some people think the job can be done just by running computer models in ...


Gas processing

ProMax® is a powerful and versatile process simulation package that is used worldwide to design and optimize gas processing, refining and chemical facilities. Totally integrated with Microsoft Visio®, Excel® and Word®, ProMax is the best simulation tool for designing gas ...


Is pinch enough?

Back in the late 1970’s and early 1980’s when fuel gas prices were high, energy utilization assumed major importance. A new method of calculating heat exchanger networks was developed. It was called Pinch Technology. Today pinch has been rediscovered by engineers who have access ...


Nasty stuff

Heavy crudes are here to stay. As longs as oil prices remain high, Canadian, Venezuelan, Deep Water Gulf of Mexico, Mexican and other low API gravity crude oils will play an ever more important role in supplying world refineries. And prices promise to remain high because gainsayers notwithstanding, ...


Processing heavy Canadian crude

Reducing crude oil cost is the major incentive driving crude and vacuum unit projects to handle heavy Canadian crudes. But such crudes–Albian Heavy, Christina Lake, MacKay River and others derived from oil sands–today present refiners with a unique set of problems not just ...


ProMax®

ProMax is built on over 40 years of continual research and development efforts. Our team of development engineers has consistently found innovative ways to model processes so that the end results accurately refl ect the actual operating conditions of gas processing, refi ning and chemical ...


ProTreat® mass transfer rate based simulation

ProTreat - the only true mass and heat transfer rate-based simulator specifically for gas treating. ProTreat is the industry’s most advanced simulation tool for gas treating.  Because it is rigorously  mass-transfer  rate-based,  it  offers  the  ...


Selecting the best solvent for gas treating

Selecting the best amine/solvent for gas treating is not a trivial task. There are a number of amines available to remove contaminants such as CO2, H2 S and organic sulfur compounds from sour gas streams. The most commonly used amines are monoethanolamine (MEA), diethanolamine (DEA), and ...


Why do many crude/vacuum units perform poorly?

In many cases it’s because the original design was based more on virtual than actual reality. There is no question: computer simulations have a key role to play but it’s equally true that process design needs to be based on what works in the field and not on the ideals of the ...