Conference Presentations - 2011 AIChE Spring Meeting and Global Congress on Process Safety

Coal has performed an important role as the primary energy source since the industrial era in the eighteenth century. Recently, the importance of coal has been growing in the world. In fact, IEO2010 reports that energy consumption of coal is growing from 132 quadrillion Btu to 206 in 2035. The...

The market conditions over the couple of years has prompted many end-users to review antisurge control design to help lower their energy index. A number of factors affect antisurge control system design and consequently impact the surge control margins. Cracked/charge gas compressors have evolved...

Objectives of Anti-Surge Control Preventing a compressor surge is the primary purpose of an anti-surge controller. However, there are additional requirements that must be met for an anti-surge control package to be effective. It must be stable and reliable, while also keeping energy costs to a...

Today’s chemical industry is very complex with most commodity chemicals being produced from some variation of petroleum feedstocks. From transportation fuels to polymers, petroleum is truly the largest source of basic hydrocarbons for which many of the common household products consumers use. Along...

Chemical reaction fouling is principally controlled by two factors: wall temperature and local fluid shear stress. Computer programs for the design of shell-and-tube exchangers generally calculate a mean heat transfer coefficient for the tube bundle. In reality both heat transfer coefficient and...

Underlying feedstock prices that derive from either natural gas or crude oil represent a high percentage of the operating expense related to the production of ethylene for a vast majority of the global ethylene market. Historically, while steam crackers in West Europe and Asia are mainly naphtha-...