Chemical Engineering September 2013

FEATURES

ChemInnovations 2013 Conference & Expo Show Preview
Use this ceramic DP sensor with corrosive media; This rectangular explosion vent has a non-fragmenting opening; These products remove scale deposits from a variety of materials; and more...

Improve Rotary Equipment Reliability with Checklists
Design selection and commissioning of rotary equipment can benefit by following a structured, checklist-based method and by promoting end-user involvement

PVC and CPVC Plastics for CPI Equipment
Chemical process equipment made from thermoplastics can have distinct advantages for equipment corrosion, fluid contamination and flame retardancy. The following represents a brief look at properties, possible applications and available methods of fabrication for heavy-gauge thermoplastics sheets of polyvinyl chloride and chlorinated polyvinyl chloride...

Polypropylene Bulk-Phase Process
Polypropylene is a thermoplastic polymer with a global market of about 60 million metric tons annually. More than 35% of the world's total PP is produced using LyondellBasell's Spheripol technology...

Successful implementation of a new extractive-distillation technology for aromatics recovery
AMT International Inc. (Plano, Texas) and LG Chem, Ltd. (Seoul, Korea) have successfully converted an existing sulfolane liquid-liquid extraction (LLE) unit at LG Chem’s Yeosu plant using a new extractive-distillation...

Some bacteria are not inactivated by ultrasound; here’s why
Although the inactivation of bacteria by high-power ultrasound has been extensively studied, the relationship between the effectiveness of ultrasound to inactivate bacteria and their physico-chemical properties is not yet well understood...

The Science Of Droplets
Many chemical engineers study or employ distillation trays, gas-liquid separators and spray nozzles. Most of those engineers have studied or employed force balances around liquid droplets suspended in upward-flowing vapor streams...

Fundamentals of Bulk Solids Mixing and Blending
Learn about mixing technology, types of blending equipment and key sampling practices to meet today’s requirements for robust processes

Understanding Finned Heat Exchangers
Fin geometry affects many aspects of boiler, evaporator and heater selection

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Chemical Engineering July 2013

FEATURES

CO2 Utilization
Researchers are developing new technologies for using CO2 as a feedstock to make a variety of chemicals

Securing Industrial Control Systems
ICSs are vulnerable targets to cyber attacks. More than conventional IT-security solutions are needed to protect them

Rotary Valves in Pneumatic Conveying Systems
Because of their wide application in pneumatic conveying systems, it is important to understand how rotary valves are designed and used

Cooling-tower Water: A Hybrid Problem Calls for a Hybrid Solution
In addition to the usual woes, new issues are creating a situation that calls for a hybrid approach to water treatment

Improved corrosion control in refinery steam systems
GE Power & Water has introduced a novel, dual-pronged approach to corrosion inhibition for boiler and steam-condensate systems in petroleum refineries. The technology is designed to prevent attack by acidic species on...

Polymer-based Piping
Polymer-based piping systems offer a number of advantages, along with some limitations, compared to metallic and other non-polymeric pipe materials. The use of thermoplastic piping in the chemical process industries (CPI) must be carefully considered on a case-by-case basis...

Polymer-based Piping
Polymer-based piping systems offer a number of advantages, along with some limitations, compared to metallic and other non-polymeric pipe materials. The use of thermoplastic piping in the chemical process industries (CPI) must be carefully considered on a case-by-case basis...

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Chemical Engineering June 2013

FEATURES

Controlling Air Pollutants
While it’s not always easy to determine what’s required for compliance, new technologies can help achieve air-pollution control

Compressors: N2 Expands the Applicability of Dry Gas Seals
When the process gas is dirty or corrosive, nitrogen can be used to ensure trouble-free operation of the seal, but it requires special steps

Ethylene Production via Ethanol Dehydration
Ethylene is a critical building block chemical in industry. High crude oil prices and concerns over carbon dioxide emissions have spurred research into manufacturing ethylene from renewable sources. This page describes a process for making ethylene from renewably-derived ethanol

Solving Vessel Equations: A Better Way
Irregularly shaped vessels present challenges for determining liquid volumes. New tools can help

Vapor Depressurization: Concept and Implementation Hitesh Pandya
When carrying out depressurization calculations, special attention is needed for critical equipment and systems such as rotating equipment, columns and reactors

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