Agenda - 10-07-2008 - 7a - Laserfiche WebLink

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Figure B-5~ Typical RDF Processing SchernatiC7 Other configurations may include additional separating equipment or exclude trornnmeUs, but the RDF generated is always shredded so that it is capable of being blown into a furnace. Although results vary with the processing configuration, in general, about 80 percent ofthe incoming waste stream is converted into ROFfor the thermal process. An advantage of this system is in the removal of nlete|a and other materials from the waste stream. VVhUa not all these facilities include this step in the processing line, those that do can realize revenue from the sale of recovered metal. For instance, at the North County Resource Recovery Project in West Pm|rn Beach, Florida, the nominal ],OOO TPD facility removed and sold over 30,000 tons of ferrous metals in 2003 which represented over 3 percent of the weight of the incoming waste stream. ' ' | f nnbue�ib|�� the specific heat content of the RDF can be With the removal o non-oo / increased by 10 percent over the original y4SVV. 1.1.4 Fuel/Fluidized Bed In this incineration process, 4BV is shredded to less than four inches mean particle described in 1 3 � above) to produce the fuel size (the / . . _- _. ^- bed f d i a vertical cylindrical furnaca (see Figure B-5) 'before it is blown into a � o sand n ~ ^mt air is also injected into the bed �orn below, and the sand has the appearance of Hot fluid as hot air agitates the sand particles. Moisture in the RDF is ~ evaporated almost instantaneously upon entering the bad, and organics burn out �vapo nn '~^~~ — --- '—d in freeboard, ''thevoh rneabov�tha bed. Stearn tubes both within the bed an n the u ' - are embedded within the bed, and a transverse section of boiler tubes captures heat from the flue gas exiting the furnace, as shown in Figure B-6. r source: generic. GBB/C08027-01 . B-8 August 15, 2008