Browse Editions : 1998 / Q1
Title Author Edition
Improving refinery integration

Ryuzo Watari, Chiyoda Corporation

1998 / Q1

With deregulation of electric power production, the question of how to turn waste products of upgrading processes into assets may be answered by the combination of the Eureka cracking process and the Texaco Gasification Power System (TGPS).
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Reaping the rewards of an internal audit

Brian M Moyse and Johannes Wrisberg, Haldor Topsoe
David L Yeary, Phillips Petroleum Co

1998 / Q1

Production of 0.05 wt% S diesel for an acceptable period of time can present challenges.  This article quantifies the effect of a properly designed distributor to enhance catalyst contacting efficiency which, in the refinery discussed here, produced a 45'F lower reactor temperature and double the run length.
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Mid-barrel optimisation

Gerald A Lambourn, AMEC Process and Energy

1998 / Q1

Refiners face an unprecedented technological and economical challenge in meeting the European Union's propsed new fuel specifications.  This article develops a planning strategy for the typical cat cracking refinery with adequate conversion capacity.
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Revamp opportunities for isomerisation units

Christopher Gosling, Richard Rosin, Patrick Bullen, UOP
Toshio Shimizu, Cosmo Research Institute
Tetsuya Imai, Mitsubishi Heavy Industries

1998 / Q1

Light paraffin isomerisation technology traditionally has used either zeolite or chlorided alumina catalysts, each with certain weaknesses.  This article reviews a new isomerisation process, Par-Isom, based on a high performance sulphated metal catalyst which is robust and regenerable.
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Integrated choice etherification system: Pt 2

Mario Marchionna and Roberto Trotta, Snamprogetti SpA

1998 / Q1

The Integrated Choice Etherification System is aimed at the production of different components.  The most important features of the etherification technologies employed, and their impact on the reformulated gasoline pool, are outlined and discussed in this article.
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Refining trends in hydrogen and syngas

Alan Karp and Ronald L Dickenson,   SFA Pacific Inc

1998 / Q1

Hydrogen demand for bottom-of-the-barrel upgrading and fuel reformulation, together with the power-for-sale opportunities created by deregulation and the potential for converting natural gas to liquid products, are raising new and widespread interest in synthesis gas generation and utilisation.
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Digital control rooms: are they what operators need?

Robert W Szoke, Ashland Petroleum Company

1998 / Q1

The control room's migration from analog panel boards to distributed control systems (DCS) solved many problems and created some new ones.  Was it worth the effort?  The transition to all-digital control rooms is discussed with an eye towards some technologies that are looming on the horizon.
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Upgrade of predictive multivariable control for a delayed coker

David J Anderson, Chevron Products Company
Dennis I Cima, Aspen Technology Inc.

1998 / Q1

The new multivariable controller at Chevron's El Segundo delayed coker, now online for over a year, has increased unit profitability by some $1 million a year.  The benefits achieved by the new fractionator and gas recovery system multivariable predictive controler include a more profitable yield structure.
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OLE in process simulation model development

Peter Stanley, Hyprotech Ltd

1998 / Q1

Object Linking and Embedding (OLE) technology is enabling processors to choose the most suitable software components for their applications, and to adapt it to develop rigorous simulation models, reflecting realistic plant behavious, in a shorter time than ever before.
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Improving instrumentation and control

Michael A Spencer, HSB Reliability Technologies
Ross M Elliot, EnTech Control Engineering Inc

1998 / Q1

The economic impact of poorly designed and maintained instrumentation and control systems is examined in this article, together with methods for improving and continuously maintaining their performance.
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Gas plant advanced process control using personal computers

William A Poe and P N Berkowitz, Continental Controls Inc

1998 / Q1

A new technology in the economic optimisation of gas processing has improved operations in a wide range of inlet conditions.  The approach has effectively reduced operator interaction and also achieves better results when placed under supervisory control.
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Ethylene revamps using Advanced Recovery System

John Reid and Ken Bush, Stone & Webster Engineering Corporation

1998 / Q1

Advanced Recovery System technology has been widely adapted, with some 4 million tons a year of new ethylene capacity committed to it and 6 million tons of revamp capacity operating or being prepared.  This article examines results to date and highlights revamp projects in progress.
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Relative economics of mixed C4 processing routes

Stacia M Edwards, Stephen J Stanley, Margaret M Shreehan, ABB Lummus Global

1998 / Q1

Ethylene producers are seeking ways to upgrade the mixed C4 stream from ethylene plants to improve operating economics.  Various technologies have been commercialised, including butadiene extraction, MTBE, and several others that can be combined to produce or recover various C4 products.
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Two-chain characteristics of bimodal polymers

Jouni Takakarhu, Borealis Polymers Oy

1998 / Q1

The basis of Borstar polyethylene technology, which offers bimodal PE grades for many applications requiring combined strength and processability, is a proprietary catalyst and loop-gas phase reactor process, described in this article.
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