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Environment, Health, Safety & Security

Newsfront: Combustion Equipment, Burning for You

As environmental regulations continue to get tighter regarding oxides of nitrogen (NOx) and other emissions, makers of burners and incinerators are working to develop equipment that not only meets or exceeds permissible emission levels, but also surpasses traditional operational capabilities.…

Engineering Practice: Discharge Coefficients and Flow Resistance Factors

This article presents the fundamental concepts of the discharge coefficient, KD, of a relief valve or a safety relief valve, and flow resistance factor, KR, of a rupture disk, and their proper use in sizing an emergency relief system. When…

Chementator: A process that requires less energy to treat sludge efficiently  

A new activated-sludge-treatment process that promises to slash energy consumption is being developed by Sanki Engineering Co., Ltd., (Tokyo, www.sanki.co.jp), in cooperation with Ebara Corp., (Tokyo) and Touhoku University (Sendai, all Japan), and the support of NEDO (New Energy &…

Chementator: Eye washing takes a new direction  

Since the original invention of the steady-stream eyewash over 50 years ago, the accepted practice in the chemical process industries (CPI) and other industrial circles has been to flush the eyes with two, separate, arc-shaped water streams, each one flowing…

Chementator: A faster way to decontaminate soil  

Liberty Engineering (Hamburg, N.Y.; www.libertypsa.com) has developed a bioremediation system that fully removes carcinogens from soil in 90 days. The process is based on microbial oxidation of organic compounds by petrophyllic pseudonomads in an oxygen-rich environment. The bacteria are specifically…

Chementator: Oxy-combustion  

Last month, what is claimed as the first pilot plant in the world to demonstrate carbon-dioxide capture and storage (CCS) based on oxy-combustion came onstream next to Vattenfall´s 1,600-MW, lignite-fired Schwarze Pumpe power plant in Germany. The 30-MW pulverized-coal demonstration…

Chementator: Bio-based isoprene  

Genencor, a div. of Danisco A/S (Copenhagen, Denmark; www.danisco.com) and The Goodyear Tire and Rubber Co. (Akron, Ohio; www.goodyear.com) have started a research collaboration to develop a bio-based process for producing isoprene using renewable raw materials. Tradenamed BioIsoprene, the alternative…

Chementator: Smaller baghouses  

Last month, Donaldson Torit (Minneapolis, Minn.; www.donaldson.com) launched the Torit PowerCore dust collectors, which are up to 50% smaller than traditional baghouses. An extension of the firm’s patented PowerCore technology that has been proven in engine filtration, the new dust…

Chementator: Biomass-to-DME  

As part of the European BioDME project, Haldor Topsøe A/S (Lyngby, Denmark; www.topsoe.com) and Chemrec will design and build a new plant for producing dimethyl ether (DME). Located at the Smurfit Kappa paper mill in Piteå, Sweden, the facility will…

September Bookshelf

Handbook of Chemical Technology and Pollution Control. Third Edition. By Martin B. Hocking. 30 Corporate Drive, Suite 400, Burlington, MA 01803. Web: wiley.com. 2006. 830 pages, $95.95. Reviewed by V. N. Lad, S. V. National Institute of Technology, Gujarat, India…