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Deep-cut vacuum unit design

Tony Barletta and Scott W Golden, Process Consulting Services Inc

2005 / Q4

Process modelling and equipment know-how are needed to design deep-cut vacuum units that operate reliably at high temperature and low pressure.  The model must reflect the actual performance of the equipment and not simply the designers' intent.

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Increasing distillation column throughput

George E Dzyacky, 2ndpoint LLC
A Frank Seibert, J Christopher Lewis, University of Texas at Austin

2005 / Q4

Pattern-recognition control strategy may help prevent flooding in distillation towers and in some cases see capacity improvements, as well as giving plant personnel confidence to operate the column near its flood point.

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Amine process simulation modelling

Bill Pennycook, Simon Jackson and Iain Martin, Davy Process Technology Ltd

2005 / Q4

Generic design techniques are used to verify thermodynamic data before the construction of a complete simulation model.  The resulting optimised process is a cost-effective 
approach to a non-ideal separation.

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Predicting amine blend performance

Hamid Reza Khakdaman and Ali Taghi Zoghi, National Iranian Oil Company

Majid Abedinzadegan Abdi, Memorial University of Newfoundland.

2005 / Q4

A process simulator is able to predict the performance of an Iranian gas-sweetening plant.  Various mixtures of diethanolamine (DEA) and Methyl diethanolamine (MDEA) are used to investigate the potential for an increase in plant capacity.

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Increasing vacuum tower performance Mark Pilling Nina Prohorenko Alan Szymanski Sulzer Chemtech USA Inc

 

2004 / Q4

Advantages of using gravity flow liquid distributors in services where, historically, spray nozzles have been used, specifically in refinery vacuum tower wash sections where liquid entrainment must be avoided if capacity is to be increased 



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Trouble-free design of refinery fractionators

Henry Z Kister Fluor Corporation

2003 / Q4

A review of factors most frequently the cause of distillation towers falling short of design objectives. Analysis of case histories provides guidelines for identifying potential troublespots in the most important fractionators



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Specifications – importance of getting them right Steve White and Scott Fulton Process Consulting Services

 

2003 / Q4

Faulty equipment specifications sometimes carry unforeseen penalties, with loss of performance. But do not blame the original equipment manufacturer, say the authors – it is the process design engineer’s responsibility to meet the objectives



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Debottlenecking coker Fractionators

Charlie Herron and Keith Whitt Shell Global Solutions
Greg Hall Shell Oil Products

2003 / Q4

Tradeoffs to be considered when high capacity trays or structured packing is selected to meet the required capacity, product quality and yields, together with ease of maintenance, in the delayed coker main fractionator and gas plant 



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Adsorption and regeneration on molecular sieves

Anders F Carlsson, Ruud H M Herold and C J Smith, Shell Global Solutions International BV

2006 / Q4

Optimal regeneration of a molecular sieve bed in a dehydration unit can help prevent liquid water formation.  A generalised adsorption and regeneration program for optimising dehydration units at LNG plants is presented.

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Calculating light alkanes solubility in TEG

Alireza Bahadori, National Iranian South Oil Company (NISOC)

2006 / Q4

Plant model covering full range of dehydration plant operation conditions and experimental data estimate the amount of CH4, C2H6 and C3H8 absorbed per volume of TEG circulation vs partial pressure of light alkanes and absorber temperature.

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Refining high acid crudes

Brian D Chambers, Honeywell Process Solutions

Russell D Kane, iCorrosion

2008 / Q4

Assessing crude oil corrosivity based on sulphidic and naphthenic acid corrosion.  A revised procedure includes analysis, testing and a corrosion model that takes into account critical parameters for the evaluation of operational risk, unit upgrading and maintenance planning.

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