Chemical Engineering
Facts At Your Fingertips: Fractional Solvent-Free Melt Crystallization
Fractional crystallization is a stage-wise separation technique that relies upon the liquid-solid phase change and enables the purification of multi-component mixtures, as long as none of the constituents can act as a solvent to the others. Thanks to the level…
Pilot-Scale Distillation Process Design
The inherent characteristics, requirements and special concerns of pilot- and laboratory-scale distillation columns differ from those of commercial-scale equipment. The scale-related differences of distillation assemblies are presented here Distillation processes at any scale share many of the same theoretical and…
Boiler Water Essentials: Water Is Water (Not)
When it comes to water used in boilers, it is important to remove potentially problematic impurities. This offers a potentially huge return on investment, even with the prevention of just one major upset, let alone recurring failures Several decades ago,…
Precoat Filter Demineralizers in Steam Loops
By minimizing, or even eliminating, the need for blowdowns in steam systems, precoat filter demineralizer systems can greatly contribute to water-conservation efforts Steam is essential in any chemical process plant, primarily for generating heat and power. Power generation (the largest…
Predictive Maintenance Implementation
Five common mistakes associated with implementing predictive maintenance tools are discussed here, along with five ways to avoid them Predictive maintenance (PM) implementation can be a daunting task. There are many factors to consider and many ways that things can…
This coating boosts the efficiency of perovskite solar cells
Perovskite materials have great potential as a lightweight and low-cost option for solar panels, but in the past have not been seen as stable or durable enough for widespread use in large-scale solar-power installations. Now, a new coating developed by…
Chementator briefs
ODC Technology Last month, Covestro AG (Leverkusen, Germany; www.covestro.com) started up a new world-scale facility for the production of chlorine in Tarragona, Spain. It is the first world-scale production plant for chlorine based upon the oxygen-depolarized cathode (ODC) technology invented…
Perform dewatering, drying and cleaning of liquid waste in a single process
A recently commissioned, 150,000-ton/yr facility in Sumner, Wash. is the first wastewater-treatment plant to deploy a new liquid-waste treatment technology. Owned by Generate Upcycle (San Francisco, Calif.; www.generatecapital.com), and operated in partnership with Sedron Technologies, LLC (Sedro-Woolley, Wash.; www.sedron.com), the…
Integrated capture and conversion of CO2 to methanol
Processes that capture carbon dioxide from industrial fluegas and simultaneously convert it into useful chemicals are desirable because they offer an opportunity to produce CO2-derived chemicals more efficiently and economically than conventional approaches, where costs are driven up by the…
More sustainable curing technology for coil coatings
Coil coating is a continuous process for producing prepainted sheets of metal (steel or aluminum), which can then be fabricated into various building and other materials. Because organic coating materials are used, the process requires substantial energy for the curing…