Processing & Handling
Why Bad Things Happen to Good Steam Equipment
Accounting for an entire steam-trap population is crucial to avoiding safety incidents and sub-optimal production — high-priority consideration must be given to steam-system management Historically, steam systems have provided the most effective source of readily conveyable heat to industrial process…
Fundamentals of High-Shear Dispersers
Successful dispersion depends on a basic understanding of dispersion equipment and how dispersers should be used High-shear mixers typically operate at high rotational speeds and are used for mixing applications that are best described as dispersion processes. They can be…
Dimensionless numbers in fluid dynamics
Dimensionless numbers refer to physical parameters that have no units of measurement. These numbers often appear in calculations used by process engineers. As long as consistent units are used, dimensionless numbers remain the same whether metric or other units are…
Onsite CN generation
Gold mines using traditional cyanide-leaching extraction processes will benefit with the launch of a new technology allowing onsite production of sodium cyanide. The technology, developed by Synergen Met Pty Ltd (Brisbane, Australia; www.synergenmet.com), will eliminate a range of hazardous activities…
‘High-entropy’ alloy
Researchers from North Carolina State University (Raleigh; www.ncsu.edu) and Qatar University (Doha; www.qu.edu.qa) have developed a new metal alloy that is claimed to have a higher strength-to-weight ratio than any other existing metal material. The low-density, nanocrystalline alloy — Al20Li20Mg10Sc20Ti30…
New enzyme
Last month, Novozymes (Copenhagen, Denmark; www.novozymes.com) launched a new enzyme, dubbed Eversa, which is said to be the first commercially available enzymatic solution to make biodiesel fuels from waste oils. The enzymatic process converts used cooking oil or other lower-grade…
Controlling Suspension Rheology
The physical characteristics of dispersed particles have a large impact on overall rheological properties Many important products of the chemical process industries (CPI) exist as suspensions or dispersions of particles in liquid media. Examples range from adhesives, ceramics, paints and…
Solar-electric hybrid furnace could enable improved magnesium processing
A new high-temperature reactor that can draw power from conventional electricity as well as from a solar-thermal heating system could enable a cleaner, lower-energy route to lightweight magnesium alloys. The custom-made reactor was built by thermal processing equipment company Harper…
Generating power from kerosene and ammonia
The National Institute of Advanced Industrial Science and Technology (AIST; Tsukuba City, Japan; www.aist.go.jp), in collaboration with Tohoku University (www.tohoku.ac.jp), succeeded in demonstrating what is said to be the world’s first ammonia-fired power. The achievement was carried out in a…
This ‘superomniphobic’ texture repels all liquids
Researchers from the University of California at Los Angeles (UCLA; www.ucla.edu) Henry Samueli School of Engineering and Applied Science have created what is claimed to be the first surface texture that can repel all liquids, no matter what material the…