Alcoa of Australia (www.alcoa.com.au) has developed a process to recover sensible and latent heat from the fluegas (FG) produced by Bayer alumina calciners, and use the heat to evaporate Bayer spent liquor. Peter Hay, of Alcoa’s Technology Delivery Group, at…
Koch Membrane Systems Inc. (KMS; Wilmington, Mass.; www.kochmembrane.com) recently unveiled large-diameter reverse osmosis (RO) elements and pressure vessels for seawater desalination that offer cost savings and reduced footprints. The new RO element and pressure vessel combinations have an 18-in. dia.…
An advanced heat recovery system (AHRS) that boosts the fuel-to-steam efficiency of firetube boilers by as much as 15% will be produced by Cannon Boiler Works Inc. (New Kensington, Pa.; www.cannonboilerworks.com) through a license agreement with the Gas Technology Institute…
A multi-stage wet scrubber that combines the removal of sulfur, hydrogen chloride, sulfuric acid mist (SAM) and particulate matter (PM) in a single unit has reduced sulfur dioxide emissions by an average of 99.7% in its first large-scale commercial installation…
Changes in the rate of corrosion in water tubes have been detected within minutes by an externally mounted monitor developed by the Center for Nuclear Energy Research (CNER, Fredericton, NB, Canada; www.unb.ca/cner). The data were obtained in online tests over…
A process that produces 75–85 gal of ethanol per dry ton of mixed cellulosic waste feed will be commercialized by BlueFire Ethanol (Irvine, Calif.; www.bluefireethanol.com). The plant, to be built in Lancaster, Calif., will convert 130 dry ton/d of feed…
Haldor Topsøe A/S (Lyngby, Denmark; www.topsoe.com) has signed a design contract with an undisclosed client in China for a new plant that will produce substitute natural gas (SNG). When the plant comes on stream in 2011, it will produce close…
Incineration is becoming the only viable method for sewage sludge disposal as landfilling or spreading sludge onto farmland is no longer permitted in some countries. Today, sludge is commonly incinerated in large, centralized incinerators or as an additive in coal-fired…
Last month, a photocatalytic water-cleaning system that removes organic and inorganic contaminants that are difficult to breakdown from wastewater was inaugurated at the German Aerospace Center (DLR; Stuttgart; www.dlr.de) facility in Lampildshausem. The so-called RayWOx system features a new type…
In February 2009, Talvivaara Mining Company Plc. (Espoo, Finland; www.talvivaara.com) delivered its first in a series of commercial shipments of metals to Norilsk Nickel Harjavalta refinery in Finland. Talvivaara expanded the crushing circuit and has restarted the metals precipitation process…