Chemical Engineering Magazine &October 2009
Date: 24 April 2011, 00:21
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Cover story 34 Cover Story Estimating the Total Cost of Cartridge and Bag Filtration When changeout and disposal costs are added to the purchase cost of filters, the total cost of disposable filters can more than quadruple A proven method of reducing total life- cycle cost is larger surface- area filters neWs 11 Chementator World’s largest refinery starts up a novel sulfur-removal system; This wastewater-treatment technology can cut sludge by 50% or more; Imitat- ing nature for improved CO2 capture; This CO2-capture process promises to have half the energy cost of MEA; Removing Hg from soil; Making acrylic acid from glycerin; Dandelion rubber; This newly commercialized organic semiconductor is solutions-processible; A photocatalyst moves closer to com- mercialization; Modular design would shorten construction times for nuclear plants; Corn starch may have a future as a foam packaging material; and more 19 Newsfront Employment Outlook A soft economy means fewer chemi- cal engineering jobs, but salaries hold steady 23 Newsfront Feeling the Pressure En- hanced pressure transmitters can help processors reduce maintenance and labor costs during the economic pinch engineering 32 Facts At Your Fingertips Chemical Resistance of Thermoplastics This one-page guide outlines consider- ations for choosing thermoplastics in corrosion-resistant applications 44 Feature Report Energy Efficiency: Tracking Natural Gas With Flowmeters Thermal mass flowmeters provide advan- tages over other options for metering the consumption of natural gas by individual combustion units throughout the facility 49 Environmental Manager Preventing Dust Explosions Risk management pro- grams are critical for safe handling and processing of combustible dust as well as for OSHA regulatory compliance 52 Engineering Practice Compressed Gases: Managing Cylinders Safely Follow these recommendations to ensure the safe handling, storage and use of gas cylinders equipment & serviCes 32D-2 ChemShow Preview (Domestic Edition) This storage unit can survive a 5-psi blast without damage; Increase pro- cess capacity with this thin-film evapora- tor; This vacuum filter is certified to 0 12 microns; Clean-up and maintenance for this round separator is easy; These bal- ances offer redesigned user interface; Get a large filter area with this belt filter; Filter viscous media with this ultrafiltration cas- sette; Increased process control offered with this absorption sensor; and more 32I-2 New Products & Services (Interna- tional Edition) Scrub more H2S with this new adsorbent; Hazmat suits that are certi- fied for safety; Improve vessel cleaning with this new range of spray balls; Connect and disconnect fluid lines safely with this cou- pler; A wireless modem for gathering data remotely; For high throughputs, consider this dry vacuum pump; This standardized canned-motor pump has built-in protection; and more 33 Focus Analyzers A new line for simply and easily determining melting point; In- process analyzers eliminate the need for random sampling; New laser gas analyzer for insitu, cross-stack tests; Moisture and solids analyzer cools 25% faster
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