June 2001


Special Report: Process Optimization

Determine the optimum crude intake level - a case history
Hartmann, J.C.M., Consultant

When using LP models, users must be fully aware of what data is important and discard the rest

Improve tray operations
Sloley, A. W., CH2M Hill

How failure occurs from blowing and what can be done to prevent it

Engineering Case Histories

Case 3: Shaft galling in a bushing
Sofronas, A., Consulting Engineer

When troubleshooting, the cause may not be as obvious as it first appears

Process Optimization

Predict contaminant concentrations in deaerator-vent emissions
Baade, W. F., Kunz, R. G., Air Products and Chemicals, Inc.

Here is a tool to estimate maximum concentrations of contaminants in hydrogen-plant condensate

Crude distillation unit online optimization
Hou, K., Hu, S., Li, Y., Shen, J., Tsinghua University

A stochastic model provides optimal results to the advanced control system

Process Optimization/Refining

How to efficiently plan a grassroots refinery
Adams, D. J., Honeywell Hi-Spec Solutions; Cadenhouse-Beaty, P. J., Cadchem (Pty) Ltd.; Eberhardt, J., Maiti, S. N., Lurgi Oel Gas Chemie; Kundu, S., Lurgi India Co., Ltd.

To select the best processing configuration and investment decision, this refiner used LP modeling, plant cost estimation and IRR analysis to find the optimum solution


Control valves for critical applications
Kiesbauer, J., Samson AG

Know the causes of cavitation and flashing and how to prevent them


HP Control: A day with Google
Kane, L., Hydrocarbon Processing Staff

I rarely search the Internet for process control information. It's just too time-consuming (phoning or e-mailing a friend is much quicker). Enter "process control" into a search on most..

HP Reliability: Expander power absorption methods
Bloch, Heinz P., Hydrocarbon Processing Staff

Turboexpanders frequently used in refrigeration processes develop power, but recovery of this power has often been of secondary importance. A number of power absorption methods are dire..

HP Water Management: Why automate chemical feed and control systems?
Huchler, L. A., MarTech Systems, Inc.

Due to advances in microprocessor technology, the opportunities for process automation have increased dramatically while costs have decreased. Numerous strategies are available to autom..

HP Automation Safety: The trend toward SIL2
Goble, W., exida LLC

A new market study I worked on shows that the percentage of SIL3 safety instrumented functions (SIFs) is decreasing. SIFs are getting classified more and more as SIL1 and SIL2. Why is t..

Jackson, Kim M., Hydrocarbon Processing Staff

AGA Gas, Cleveland, Ohio, has changed its name to AGA Gas, Inc., a member of the Linde Gas Group. This combines two names in industrial gases, Linde Gas AG of Germany and AGA Gas, Inc. The brand addit..

HPInformer: International
Jackson, Kim M., Hydrocarbon Processing Staff

Gulf Publishing Co., Houston, Texas, and RMC plc, Eynsham, UK, have a business partnership to co-host an online conference aimed at the global oil and gas industries. The conferenc..

New Developments: New Developments in products, services and software

Cleaning times for process data reducedNew Data Cleaning Tool has reportedly reduced the preprocessingtime needed to ensure plant operational data integrity. Processdata integrity is vital to overall ..

HP Construction: HPIn Construction
Jackson, Kim M., Hydrocarbon Processing Staff

Air Products to build oxygen plant Air Products and Chemicals Inc., Lehigh Valley, Pennsylvania, has signed an agreement with Tesoro Northwest Co. for the construction of a 350-tpd-air separation unit..

Free Literature

Integrated process control solutionsNew eight-page brochure from ABB Instrumentation highlights its integrated process control solutions. These include products for integrating operations and informat..

HP In Brief: HPIn Brief
Weirauch, Wendy, Hydrocarbon Processing Staff

Outlook for global polyethylene (PE) consumption calls for a growth rate averaging 5.7% over the next five years. Year 2000 use increased 4% or 1.9 million tons (MMton), according to a new report from..

HP Impact: HPImpact: U.S. Energy Policies
Weirauch, Wendy, Hydrocarbon Processing Staff

Present gasoline pricing has sparked concern to generate a "real" energy policy. A better policy can be conceived and guided to fruition; however, the market and political conditions must be understoo..

HP Impact: HPImpact: Methanol
Weirauch, Wendy, Hydrocarbon Processing Staff

Natural gas prices have had a substantial impact on the U.S. methanol industry. Product rationalization and the U.S.'s growing dependence on imports are realities. High natural gas feedstock pricing h..

HP Impact: HPImpact: Single-Sited Catalysts
Weirauch, Wendy, Hydrocarbon Processing Staff

The technological revolution of single-sited and metallocene catalysts accelerated through the 1990s with increasing patent filings. The revolution continues with the advent of "post-metallocene," sin..

HP Impact: HPImpact: Polystyrene
Weirauch, Wendy, Hydrocarbon Processing Staff

The year 2000 for the polystyrene (PS) industry was one of extremes. It began with a hangover from Y2K. The normal de-stocking that occurs during fourth quarter did not occur in 1999. PS inventories h..

HP Impact: HPImpact: Asia Olefins Update
Weirauch, Wendy, Hydrocarbon Processing Staff

The region has undoubtedly launched itself on the road to recovery. To take full advantage, Asia must face up to some key issues: Sufficient real economic and structural change may not have taken pl..

HP Impact: HPImpact: Ethylene and Propylene
Weirauch, Wendy, Hydrocarbon Processing Staff

Western Europe. Although installed production capacity for ethylene in 2000 looked to be more than enough to cope with demand, actual production fell well short. Demand was over 3% more than 1999; how..

HP Impact: HPImpact: DeWitt petrochemical conference outlook
Weirauch, Wendy, Hydrocarbon Processing Staff

Industry experts at the annual DeWitt & Co. World Petrochemical Review presented their market analyses for key industry segments. Naturally, the global economic supply / demand forecast varies for dif..

Letters to the Editor

Letters to the editor

How to control a deethanizer The article "Increase MPC project efficiency using multivariable closed-loop identification" (March 2001) may have described a method of testing for MPC that improved on e..


How to efficiently plan a grassroots refinery Table 2

  Table 2. Possible refinery configurations       Configurations     Process units   1   2    3   4    5    6   7    8    9    10  ..

Environmental Technology Centre

Bill Crowley, Contributing Editor       Comments? Write: editorial@HydrocarbonProcessing.com This month we will ..

What is optimization for the HPI?
Romanow, Stephany, Hydrocarbon Processing Staff

Sometimes in our haste to emphasize key points and highlight radical new information, we are guilty of overusing descriptive words in articles, press releases, presentations and general..

Petrochemical plant costs for the new millennium

Updated cost and capacity data facilitate more accurate economic evaluations of HPI enterprises

Minimize NOx emissions cost-effectively
Itse, D. C., Chirstofferson Engineering; McAdams, J. D., Reed, S. D., John Zink Co. LLC

Use this tutorial to evaluate available control technologies and install exactly what you need for current and future NOx reductions

Increase VCM output
Kang, K. H., Lee, J. K., Song, K. H., LG Chemical Ltd.

Using multivariate statistical techniques, this VCM operator raised productivity by more than 10% without revamping cracking furnaces