Archives :: Chementator

Displaying 161 - 180 of 950 stories.
June 1, 2013
The temperature and moisture level of the air being drawn into the front end of ammonia, nitrogen, nitric acid or other plant air compressors directly impacts the yield from the process, and chilling is a way to debottleneck air production in such plants. Most methods traditionally used to increase air production in the past involved process modifications, such as adding a parallel compressor or installing...
http://www.chemengonline.com/chementator/This-process-delivers-chilled-air-using-a-fraction-of-the-power-required_10558.html
June 1, 2013
A demonstration plant in Newcastle, New South Wales, Australia, will produce hydrochloric acid and iron pellets from the iron-chloride leach liquor generated by the production of synthetic rutile, the common mineral form of titanium dioxide. The plant will utilize a process called EARS (enhanced acid-regeneration system) developed by Austpac Resources NL (Sydney, Australia; www.austpacresources.com). At...
http://www.chemengonline.com/chementator/Acid-recovery-makes-rutile-production-more-economical_10560.html
June 1, 2013
Nippon Paper Industries Co. (Nippon Paper; Tokyo; www.nipponpapergroup.com) is constructing a verification plant for the production of cellulose nanofibers (CNFs) at the Chemical Div. of its Iwakuni...
http://www.chemengonline.com/chementator/A-production-plant-for-CNFs_10561.html
June 1, 2013
Tantalum and niobium, which are often found in complex ores, are essentially chemically inert metals whose recovery involves some harsh measures: typically dissolution of the metals concentrate in a mixture of concentrated hydrofluoric and sulfuric acids, followed by solvent extraction with methyl- iso -butyl-ketone dissolved in kerosene. A process that is said to be safer and greener has been developed...
http://www.chemengonline.com/chementator/A-safer-cleaner-way-to-obtain-tantalum-and-niobium_10562.html
June 1, 2013
An improved H2SO4 process developed by CB&I (The Woodlands, Tex.; www.cbi.com) has now been licensed to three companies, all in China. The first licensee was Ningbo Haiyue New Material Co. Ltd., which is building a 600,000-m.t./yr plant near Ningbo City, Zhejiang Province (CE, December 2011, p. 11). The other two plants, each of 200,000 m.t./yr, are being built by undisclosed companies in Shandong and...
http://www.chemengonline.com/chementator/An-improved-H2SO4-alkylation-process-gains-acceptance_10564.html
June 1, 2013
China’s largest private chemical EPC (engineering, procurement, construction) contractor, Wison Engineering Ltd. (Wison; Shanghai; www.wison.com) has recently introduced details about its proprietary butadiene technology, which is set for commercialization. The process aims to meet the anticipated growth in annual butadiene consumption, which will “far exceed” global expansion in...
http://www.chemengonline.com/chementator/A-new-butadiene-process-is-set-for-commercialization_10566.html
June 1, 2013
Oji Holdings Corp. (OJI; www.ojiholdings.co.jp) and Mitsubishi Chemical Corp. (MCC; both Tokyo, Japan; www.m-kagaku.co.jp) have developed a continuous process for producing transparent sheets made from ultra-thin, wood-based cellulose nanofibers (CNF). Both OJI’s papermaking technology and MCC’s chemical treatment technology...
http://www.chemengonline.com/chementator/Continuous-production-of-transparent-sheets-of-cellulose-nanofibers_10567.html
June 1, 2013
Selecting air-pollution control equipment can be tricky. It’s not only difficult to determine which pollutants must be controlled, but also which type of equipment will best control them to required levels for any given process or facility because there is no “one-size-fits-all” solution. Technologies that successfully control pollutants in one facility may not work as well in another...
http://www.chemengonline.com/chementator/air_pollution_control/Controlling-Air-Pollutants_10556.html
May 1, 2013
Last month, Krohne Messtechnik GmbH (Duisburg, Germany; www.krohne.com) launched SmartSens, the first family of two-wire, loop-powered analytical sensors with integrated transmitter technology. Prior to this, analytical sensors have required an external proprietary transmitter onsite to deliver the sensor signals to the process control system. Krohne has...
http://www.chemengonline.com/chementator/Sensors-with-a-transmitter-built-in_10441.html
May 1, 2013
Naomi Shibasaki-Kitagawa at Tohoku University (Sendai, Japan; www.che.tohoku.ac.jp/~rpel/) has developed a continuous reactor for making biodiesel fuel from low-quality waste, such as cooking oil. Her production process uses an expanded-bed reactor packed with an anion-exchange resin that has both catalytic and adsorption capabilities. The...
http://www.chemengonline.com/chementator/This-biodiesel-process-requires-no-pre-or-post-treatment_10442.html
May 1, 2013
Two new coating products for sand proppants used in hydraulic fracturing operations in the oil and gas industry overcome the challenges of traditional phenolic coatings, which can leach environmentally hazardous chemicals. The coatings, developed by Preferred Sands LLC (Radnor, Pa.; www.preferredsands.com), are based on a specialized polyurethane developed over the past three years with partner The Dow...
http://www.chemengonline.com/chementator/Improved-coating-for-hydraulic-fracturing-proppants_10444.html
May 1, 2013
Researchers from the group of Atsushi Fukuoka at the Catalysis Research Center of Hokkaido University (Sapporo; www.cat.hokudai.ac.jp), and Showa Denko K.K. (SDK; Tokyo, both Japan; www.sdk.co.jp) have developed a new catalyst that efficiently decomposes biomass into sugars. The activated-carbon-based catalyst achieves high yields of both C6 and C5...
http://www.chemengonline.com/chementator/One-pot-synthesis-of-sugars-from-biomass_10445.html
May 1, 2013
The research groups of Keiichi Fujishige at Tohoku University (Sendai, www.che.tohoku.ac.jp/~erec) and Daicel Corp. (Osaka, both Japan; www.daicel.com) have developed a process for making 1,3-propanediol (1,3-PDO) from glycerin, a byproduct of biodiesel-fuel production. The researchers improved a catalyst developed by Fujishige to be applied to a rather simple reaction process. They are expecting that...
http://www.chemengonline.com/chementator/Making-13-PDO-from-glycerin_10446.html
May 1, 2013
  Heap-leaching for REs Studies conducted by Texas Rare Earth Resources Corp. (Sierra Blanca, Tex.; www.trer.com) indicate that heap leaching with 15% (~150 g/L) sulfuric acid has the potential to dissolve minerals containing rare-earth (RE) elements from host rock at an RE mineral site near El Paso, Texas. Research conducted by the heavy RE exploration company on the minerology, geochemistry and...
http://www.chemengonline.com/chementator/May-Chementator-Briefs_10447.html
May 1, 2013
The Circa Group (Melbourne, Australia; www.circagroup.com.au) and the Green Chemistry Center of Excellence at the University of York (U.K.; www.york.ac.uk) have signed an agreement to develop and commercialize a novel “green” solvent called Cyrene. Cyrene is a polar aprotic solvent — a solvent that lacks an acidic hydrogen and has a high dielectric constant and a high dipole moment...
http://www.chemengonline.com/chementator/A-step-closer-to-commercialization-for-a-new-green-solvent_10449.html
May 1, 2013
Although several antimicrobial hydrogels have been developed in recent years, they all have one or more drawbacks, such as possible toxicity, insufficient stability and biodegradability, and high costs. These and other drawbacks have been overcome with a synthetic hydrogel being developed by researchers from the Institute of Bioengineering and Nanotechnology (Singapore; www.ibn.a-star.edu.sg) and IBM...
http://www.chemengonline.com/chementator/Bioengineers-make-an-ideal-hydrogel-for-antimicrobial-applications_10450.html
May 1, 2013
The first commercial application of a newly developed process for the treatment of oxides of nitrogen (NOx) waste gas has been established at a milling operation in Los Angeles, Calif. Developed by Pacific Rim Design and Development (PRDD; Reno, Nev.; prdd.net), along with DuPont (Wilmington, Del.; www.dupont.com), the process uses gas-phase chlorine dioxide to react with both NO and NO2 to form nitric and...
http://www.chemengonline.com/chementator/Gas-phase-option-for-NOx-abatement_10451.html
May 1, 2013
Last month, Air Products (Allentown, Pa.; www.airproducts.com) announced that it has licensed its proprietary adsorption-based, monomer recovery process to custom process equipment supplier Cryo Technologies (Allentown, Pa.; www.cryotechnologies.com). The hybrid Air Products technology combines a partial condensation unit with a pressure-swing adsorption (PSA) process to recover unreacted ethylene and...
http://www.chemengonline.com/chementator/A-waste-free-monomer-recovery-process-is-licensed_10453.html
May 1, 2013
A team of researchers from Novasep (Pompey, France; www.novasep.com) has discovered and characterized the explosive properties of the so-called Togni reagent II and intermediates at the Novasep Leverkusen site in Germany. Invented by professor Antonio Togni at the Laboratory of Inorganic Chemistry, ETH Zürich (Switzerland; www.eth.ch) Togni reagent II...
http://www.chemengonline.com/chementator/Togni-reagent-is-reclassified_10454.html
April 1, 2013
A process developed by researchers at the University of Texas at Arlington (www.uta.edu) uses copper-based semiconductor nanoscale-rod arrays and solar radiation to carry out a photoelectroreduction of carbon dioxide to methanol. The process offers a pathway to utilize the greenhouse gas CO2 as a feedstock to synthesize a widely manufactured chemical...
http://www.chemengonline.com/chementator/Simplified-CO2-to-methanol-process-uses-copper-oxide-nanowires_10364.html
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