In the last two years, SNF Group (Andrezieux, France; www.snf.com) has added 75,000 metric tons per year (m.t./yr) of powder-grade polyacrylamide (PAM) production capacity globally to match the increased demand for EOR (enhanced oil recovery) applications. By the end of…
This column is based on “Titanium Dioxide Production Process – Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/titanium-dioxide-production-cost. Titanium dioxide (TiO2) is the naturally occurring oxide of titanium, and is found particularly in rutile ores.…
Tumble-growth agglomeration can reduce dust in solids-handling processes. Here’s how it works Handling and processing bulk solids appears in nearly every industrial sector, from energy to agriculture. Dust is a ubiquitous and challenging issue when working with bulk solids, because…
Purity requirements and gas properties require different methods for the purification of industrial gases. Provided here are key considerations for selecting gas purification technology Industrial gases are critical for a wide range of applications throughout the chemical process industries (CPI).…
Five different examples are presented in which specialty mixers are used to perform tasks more efficiently than conventional approaches Specialty mixers serve a vast range of applications throughout the chemical process industries (CPI). The approach to mixer selection invariably starts…
A method of quantifying mixing according to a mixing index is presented. This index can evaluate and predict mixing intensity related to fluid velocities in stirred tanks The stirred tank is one of the most common and versatile pieces of…
Solar desalination Researchers at Rice University (Houston, Tex.; www.rice.edu) working on nanophotonics-enabled solar membrane distillation (NESMD) have found that concentrating sunlight on small areas of the desalination membrane leads to a non-linear improvement in performance in vapor pressure, which forces…
Effective agitation of fluids for blending and motion requires a detailed analysis of capacity, viscosity and dynamic response for the fluid system, in order to find power and shaft speed of the agitator and corresponding sized of the turbine impeller.…