www.chemengonline.com May 2020 Cover Story 30 Part 1 Low-Cost Techniques for NOx Reduction An understanding of the available NOx-reduction strategies will help engineers to select the best technique to improve the performance of their combustion processes 38 Part 2 Turning up the Heat on Valve Train Safety Despite their nearly universal use in industrial combustion processes, valve trains are not widely understood. This article provides some guidelines to help ensure their safe and effective operation In the News 7 Chementator A low-cost way to make PO without chlorine or wastewater; Piloting a new sewage-treatment process to tackle emerging contaminants; Ion-exchange beads for lithium extraction; 'Artificial photosynthesis' system design overcomes problem of fast proton flow; and more 12 Business News Industry COVID-19 response, including: Ineos constructs several new sanitizer plants in Europe; Eastman donates PETG film for faceshield production; Dow launches sanitizer production on three continents; BASF begins producing hand sanitizers in Europe and the U.S.; and more 14 Newsfront COVID-19 Shutdowns Slash Demand for Refined Products Demand for refined products has dropped sharply, challenging petroleum refineries with compressed margins, but a deal was struck on global production cuts 18 Newsfront Wear it Well Wearable technologies help chemical processors improve the productivity and safety of workers Technical and Practical 27 Facts at your Fingertips Industrial Crystallization: Nucleation Processes This one-page reference provides information on the chemistry and physics of nucleation processes in industrial crystallization 18 28 Technology Profile Vinyl Chloride Production This column outlines a production process for vinyl chloride, the monomer that is used to make the plastic material polyvinyl chloride (PVC) 42 Feature Report Steam Quality Considerations Steam often provides the majority of process heat, but its quality is often not carefully managed. Here are some tips on how to improve and maintain steam quality CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM MAY 2020 1 14 30 Volume 127 | no. 5 38http://www.chemengonline.com http://WWW.CHEMENGONLINE.COM