Separation Processes
Distillation Column Internals: It’s What’s on the Inside that Counts
New column internals boost efficiency and improve reliability of distillation towers In the chemical process industries (CPI), the majority of separations are done via distillation columns. And, when the rest of the process relies upon those columns, inefficiencies, bottlenecks and…
Chemical Recycling Makes Waste Plastic a Resource
With an eye toward a circular economy, technology developers are advancing a host of new approaches to chemical recycling of post-use commodity plastics Plastics are indispensable parts of almost every sector of the economy, with wide-ranging economic, environmental and convenience…
Design and Calculation Methods for Uniflow Cyclones
Uniflow cyclones can be effective solid-gas separation equipment when space is limited. Presented here are design and calculation methods for uniflow cyclones aimed at widening the industrial usefulness of these devices Cyclone separators are, in addition to fabric filters, electrostatic…
A low-pressure process to leach metals from laterite ores
Queensland Pacific Metals (Brisbane, Australia), a subsidiary of Pure Minerals (Perth, Australia; www.pureminerals.com.au) will use Direct Nickel Projects’ (Perth, Australia) proprietary technology to process New Caledonian nickel and cobalt ore, following favorable test results. Core Metallurgy (Brisbane, Australia) has assessed…
An Investigation of Premature Flooding in a Distillation Column
Surprising observations regarding flooding in the upper fractionation trays of an atmospheric crude-petroleum distillation column are investigated In industial distillation processes, flooding is an abnormal, but relatively common, process condition in which liquid accumulates in the column. The accumulation may…
Commercializing Process Technologies
New technologies can provide competitive advantages compared to established processes, but significant effort is required to transition a promising concept into a commercial reality Many students study chemical engineering with the aspiration of someday inventing an innovative process that could…
Facts at your Fingertips: Distillation
Computer-generated simulations of distillation processes are often validated experimentally. This reference discusses three concepts that influence comparisons between experimental results and simulation predictions: vapor-liquid equilibrium (VLE) of the components; relative liquid-to-vapor flowrates (L/V ratios in the column); and vapor-liquid contactor…
Brewing Technology: An Old Art Looks Forward
Research and development in the brewing industry is peaking, driven by efforts to improve quality, efficiency and sustainability Within the chemical process industries (CPI), the brewing industry is among the sectors with the deepest historical roots and the most entrenched…
Extracting gold without cyanide
The first gold using a process without cyanide and without mercury has been produced using technology from CSIRO Minerals Technology (www.csiro.au) at a demonstration plant in the Western Australian goldfields town of Menzies. Cyanide is used in more than 90%…
Experimental Methodologies to Verify Distillation Simulations
Presented here are practical considerations concerning the equipment and methods used for experimental verifications of simulations The use of process simulation tools for modeling distillation columns is invaluable for designing plant-scale columns. However, it can be difficult to know if…