AIChE Spring Meeting and Global Congress on Process Safety

Removal of H 2 S and CO 2 from gas streams and liquid hydrocarbon streams is important in many industrial processes. Solutions of aqueous amines have been used for more than 70 years to remove these unwanted acidic components in refineries streams, chemical processing and gas purification...

The use of cryogenic liquid expanders in the propane liquefaction process can increase the amount of liquefied product by reducing the boil-off losses. Current practice is to use a Joule-Thomson valve to reduce the high pressure condensate. Losses associated by throttling across a J-T valve result...

Corrosion under insulation (CUI) of carbon and low alloy steels is one of many failure mechanisms that decrease reliability and equipment life while increasing the cost of ownership. Carbon and low alloy steels are most susceptible to CUI when operated in or cycled through temperatures ranging from...

Currently, there are two renewable diesel fuels available: biodiesel and green diesel. The biodiesel or FAME is the transesterification of vegetable oil or animal fat with methanol. The green diesel, which uses the same or similar feed stocks as biodiesel, is produced by a hydrotreating process...

Flanges on ethylene cracking furnaces are necessary for proper maintenance, and offer specific challenges in terms of leakage avoidance and safety assurance. On cracking furnaces, any gasket failure will require a shutdown for repair. As both radiant coil and refractory service life are strongly...

There is an increasing trend of using bio-polyethylene and bio-polypropylene in Europe for making consumer goods. However there is currently very limited production capacity available for producing these base chemicals that are used in the polymerization processes. This contribution will give an...

A two-phase expander recovers more work from a multicomponent LNG mixture than a single phase expander. The calculation of the recoverable work involves the complex thermodynamics of two-phase mixtures, and is best done utilizing property tables from the National Institute of Standards and...

Limited availability and the environmental impacts from fossil fuels require that we find alternative energy sources that are renewable and safe. The microbial fuel cells have gained renewed attention for the production bioelectricity and biofuel from renewable sources. We have developed a CO 2 -...

Dissolved oxygen in aqueous and organic liquids affects a variety of process operations. Even at trace levels, it can lead to fouling in processing units such as separators, heat exchangers, pumps, compressors, and reactors, causing unplanned shutdowns. It can also promote corrosion in processing...

Successful Implementation of Advanced Process Control in Cryogenic Plants. Tom Lyndrup and Greg Rogers, Enterprise Products LLC, Houston, Texas. Rafael Aguilar and Duane Morningred, Honeywell Process Solutions, Houston, TX, and Camarillo, CA, USA. Paper to be presented at the 2012 AIChE Spring...