Chemicals & Materials

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Flow of Solids in Bins, Hoppers, Chutes and Feeders

Instructor-led (classroom) Course

Gain a strong, fundamental understanding of bulk solids and bulk solid handling equipment and their behavior, along with the general principles and practical applications of solids flow.

Chem Economics: ACC Releases Portfolio of Specialty Chemicals Indexes

September

2012

Chem Economics

T. Kevin Swift

The American Chemistry Council (ACC) has launched a new set of indexes covering nearly 30 segments of the U.S. specialty chemicals market. (The first, which dealt with plastic additives, was discussed in the July issue, p. 13.) This is the first set...

Failure Mechanisms in Lithium Ion Batteries: Opportunities for Materials Development

AIChE Webinar

Sep 19, 2012

Dee Strand

This presentation will focus on the primary failure mechanisms for lithium ion batteries, how those mechanisms are affected by material selection, and vehicle applications for batteries and their future development.

Dual Function Valves for Ethylene Transfer Line Applications

Mar 22, 2010

Ken Phillips

Economic forces continue to push the capacity of new grassroots crackers higher, and the capacity of cracking furnaces rises ever higher because of economies of scale. The trends in transfer line valve design have necessarily followed this same scale-up path, which has resulted in valves of...

Tutorial on Using New Multivariable Solutions to Improve Flow Best Practices

Mar 22, 2010

Nathan Stokes

New advancements in multivariable pressure transmitter technology allow you to improve your flow measurement practices. By better understanding these advancements, you will be better able to quantify and optimize installed performance, select the right combination of compensation for a specific...

Effects of Feedstock and Catalyst and Oil Contact Time on ZSM-5 Cracking Chemistry in FCC Process

Mar 22, 2010

Considering the rapidly increasing demand for light olefins in the emerging markets, especially propylene, as petrochemical feedstocks, apart from steam cracking a number of processes such as catalytic cracking and metathesis are being modified and/or developed to enhance the propylene production...

Variability, Inventory Uncertainty and Supply Chains

Mar 22, 2010

Tony Cooper

This session will develop a fundamental understanding of how cycle time variation in stages of a supply chain propagates into measures of overall cycle time. Application can be seen in supply chains and inside plants with batch processes. While the sources of variation are symmetrical and can be...

Unusual Corrosion Failures of Transfer Line Exchangers

Mar 22, 2010

Pinakin Mistry

This paper describes two case histories of corrosion failures. The first case history describes metal dusting of the tubes and tubesheet from the process side in the horizontal TLE. The tubesheet of TLE was overlayed with Alloy 625 to prevent erosion. Deposition on the waterside allowed higher than...

Effects of Support Material on Catalytic Behavior of Platinum for Oxidative Dehydrogenation of Ethane to Ethylene

Mar 22, 2010

Oxidative dehydrogenation of ethane to ethylene is an intriguing alternative to steam cracking for ethylene production. The process operates at high temperatures autothermally eliminating the need for a firebox and at residence times 2-3 orders of magnitude faster than a steam cracker leading to a...

Cracked Gas Dryer Tutorial (Part 1)

Mar 22, 2010

Bruno De Jonckheere

This tutorial will begin with a brief introduction to molecular sieves followed by a description of the process, covering overall operation of the charge gas dryer including adsorption and regeneration steps. Key design considerations will be discussed along with optimization and troubleshooting...

Deployment of ZeaChem's Sustainable Biorefinery

Mar 22, 2010

Tim Eggeman

Increased emphasis is being placed on renewable, sustainable, domestic forms of energy, including transportation fuels, at national, state and local levels. Successful deployment of alternative solutions to petroleum-based liquid fuels for the transportation industry is dependent upon technical,...

TLE Steam Side Corrosion Boiler Feed Water & TLEs : Avoiding Failures

Mar 22, 2010

Jos Vankevelaer

This paper shows on the one hand an analysis of sudden failures occurring at the bottom section of the TLEs, caused by corrosion at the steam side and an overview of the proposed corrective actions. On the other hand best practices during operations and shutdown are presented to avoid such damages...

Boiler Technology to Monitor and Control Corrosion in the Ethylene Plant Steam Generation Process

Mar 22, 2010

Maureen Gerty

Maintaining reliable and efficient operations in the Ethylene Plant Steam Generation Process requires good control of corrosion in the pre-boiler and boiler water systems. The high purity water and high heat flux conditions require chemical treatments to be monitored and controlled in tight ranges...

Holistic Approach to the Revamping and De-Bottlenecking of Pre-Heat Trains

Mar 22, 2010

Graham T. Polley

The energy efficiency and throughput of pre-heat trains can be improved by using process integration and through fouling mitigation. In this paper we show how the approaches can be combined in a systematic way. If fouling behaviour is ignored the use of process integration can lead to revamps in...

Overcoming Logistical Challenges with Collaborative Technologies

Mar 22, 2010

Curt Hertler

All refiners—and manufacturers in general—face daunting logistical challenges including supply chain, changing product specifications, carbon legislation, and regulatory compliance. In addition, the industry faces knowledge management issues due to the reality of an aging work force. Information...

Search for the Most Viable Solution in Biorefining and Renewable Fuels Processing

Mar 22, 2010

The valorization of scarce renewable resources calls for new, advanced process technologies. The optimal route in the long run will be to encourage benefiting first from the value chain of the biomass constituents and produce fuel only from the residues or from an entirely different feedstock – not...

Cracked Gas Dryer System Debottlenecking Concepts

Mar 22, 2010

Vance Ham

Of prime importance in the ethylene plant process is the Cracked Gas (CG) Dehydration System. CG Dryer operation is a key factor to the achievement of not only on-specification ethylene production, but the prevention of incapacitating hydrates formation in the downstream recovery equipment...

Steam Cracker Optimisation through On-Line TOPNIR™ Analysis and Rigorous Kinetic Models

Mar 22, 2010

Didier Lambert

Near-infrared spectroscopy is now a well established technology for the indirect measurement of hydrocarbon streams composition and properties. From the earlier works and patents in late 80's, several industrial applications have been derived and implemented, mostly in the refining area but also in...

Designing CDU Preheating Train Thermally Coupled to DCU through Vacuum Residue Temperature

Mar 22, 2010

Crude oil distillation unit (CDU) and Delayed coking unit (DCU) present significant energy consumption in a refinery, given the high flow rates involved on process streams. As refiners are increasing the process of opportunity crudes, heat integration on these units becomes more relevant. Because...

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