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Show Bum plant gains national notoriety By TOM BUSSELBERG LAYTON Davis County's burn plant is gaining notoriety nearly a year before its completion. com-pletion. The Aug. 18 issue of "Intermountain Contractor" Con-tractor" featured a three page article on the plant, outlining construction progress and detailing de-tailing aspects of the facility. The magazine is circulated to general contractors, con-tractors, subcontractors, architects, engineers, public officials and others interested in the construction con-struction industry. It provides extensive cover-- cover-- age of building activities in Utah and Idaho but also lists bidding projects in Washington, Oregon, Ore-gon, Wyoming, Nevada, Montana or Colorado. Col-orado. Calling the Davis County waste-to-energy plant "innovative," the article went on to note the $54 million plant is 50 percent complete and "on schedule." Start-up testing should be initiated in January, Janu-ary, it continues, following on information provided pro-vided in other articles generated by this newspaper news-paper and elsewhere on plant progress. i A detailed explanation of processes to be employed in the garbage burn process was provided. pro-vided. A 1,200 ton-capacity concrete refuse pit will be flanked by six dumping ports running along the length of the pit allowing uniform filling. Trucks bringing garbage will be weighed prior to dumping with the scale system con-' nected to a computerized record-keeping and billing system. An overhead crane will then mix the refuse in the pit, clearing dumping ports and loading hoppers. A second crane will be available on standby. The article notes that furnaces must be evenly charged to obtain stable combustion. The crane operator will have a bird's eye view of the pit and dumping port thanks to his position in the main control room. Monitors will allow for careful scrutiny of the two fur nace charging hoppers, scale and dumping area. In addition, the crane operator will have immediate im-mediate access to controls of the entire process to ensure a steady refuse input into the incineration inciner-ation system. Two solid waste-fired furnace and boiler un- its will be housed in the plant. Those furnaces will include mechanized incinerator grates, refractory re-fractory walls and floors. The lower sections of each refractory or heat-resistant unit will be made of silicon carbide car-bide bricks and air-cooled. The grates will form a slanted floor for combustion in the chamber while individual grates will constantly move up and down. That'll cause tumbling of waste to guarantee complete combustion and the least amount of ash residue, the article says. It'll be a lot hotter than summer in Death Valley, as temperatures between 1400 and 1800 degrees Fahrenheit are maintained in the combustion com-bustion chambers by air being fed between the individal grades. The nickel and chrome grates designed by Seghers Engineering of Blegium are termed "extremely important" by Plant Manager James Young. He calls them "the most important impor-tant component of the plant aside from anti-. anti-. "'on devices." Such grates must function 24 hours a day, seven days a week and have been used in Euro-pean Euro-pean plants for about 50 years. Their life expec- tancy "far exceeds" anything else on the market, mar-ket, he says, with "no major service or replacement replace-ment of grate components expected during the first five-seven years of operation." The boiler system will convert heat from the combustion chamber into steam while heat will radiate from the walls of the boiler, then passing pas-sing through water-filled tubes. Those tubes will be interconnected to preheat and then super-heat the water to produce high pressure steam. That steam will be sold to HAFB for heating and industrial purposes and should generate $2.5 million annual revenue. When it comes to pollution controls, electrostatic elec-trostatic percipitators will separate the ashes from plant emissions and neutralize the remaining re-maining chemical compounds so that only clean, dry heat will be emitted from the plant's stacks, the article says. Davis Energy Systems of Delaware will operate op-erate the 50,000 square foot plant with Katy-Scghers Katy-Scghers forming Davis County Construction Contractors to build the project. Brown and Root is general contractor with L. Frank Petersen serving as project manager. t |