Decomposing limestone (CaCO3) into quicklime (burnt limestone; CaO) releases significant CO2 emissions, both from the combustion of fuel needed to heat the kiln to temperatures over 1,000°C, and by the release of CO2 from the reaction itself (CaCO3 → CaO…
Allyl chloride (3-chloropropene; Figure 1) is primarily used almost exclusively as a chemical intermediate in the production of epichlorohydrin. A three-carbon epoxide, epichlorohydrin is used in the manufacture of epoxy resins prevalent in coatings, adhesives, and plastics. Epichlorohydrin is also…
In order to maximize longevity and minimize process downtime, it is imperative to understand the factors that determine the proper selection of expansion joints. The following guidelines can help with selection decisions for expansion joints Although sometimes overlooked or treated…
Light hydrocarbons in storage tanks can vaporize and vent to the atmosphere, creating harmful emissions. An optimized vapor-recovery unit can effectively and economically reduce such emissions In the chemicals, petroleum refining and natural gas industries, storage vessels are used to…
Agronutris (Saint Orens de Gameville, France; www.agronutris.com) has selected Bühler AG (Uzwil, Switzerland; www.buhlergroup.com) as its process-solution provider for its first commercial-scale black-soldier-fly plant. Bühler will deliver a full-scope solution for the facility, which will be built in Rethel, France.…
Linde Engineering (Pullach, Germany) has signed an agreement with Yara ASA (Oslo, Norway) for the construction and delivery of a 24-MW green hydrogen plant. In December 2021, Yara was granted funding for the development of the initial plant by Enova.…
Stamicarbon BV (Sittard, the Netherlands), the innovation and license company of Maire Tecnimont S.p.A. (Rome, Italy; www.mairetecnimont.com), has been awarded a licensing and equipment supply contract for two Ultra-Low Energy grassroots urea plants in the People’s Republic of China. The…
Thyssenkrupp Uhde Chlorine Engineers GmbH, Dortmund, Germany has signed a supply contract with Shell for the large-scale project ‘Hydrogen Holland I’ in the port of Rotterdam, the Netherlands. Under the contract, thyssenkrupp Uhde Chlorine Engineers will engineer, procure and fabricate…
Copper-catalyzed electrochemical reduction offers a path for making valuable chemicals, such as ethanol or ethylene, from CO2. However, selectively generating sufficient yields of two-carbon products requires precise manipulation of the microenvironment near the surface to control reaction activity and product…
The prospects for a bio-based route to acrylates (diagram) received a significant boost recently, when startup company Låkril Technologies Corp. (Chicago, Ill.; www.lakril.com) licensed technology from the laboratory of Paul Dauenhauer at the University of Minnesota (Minneapolis, Minn.; twin-cities.umn.edu). Dauenhauer…