2012, vol. 67, br. 3, str. 367-376
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Mogućnost korišćenja sekundarne energije, nakon izgradnje 'Nove' topionice bakra, za proizvodnju električne i toplotne energije
The possibility of secondary energy usage, after construction of the 'New' copper smelter, for electricity and heat production
aRTB Bor Grupa, Bor
bUniverzitet u Beogradu, Tehnički fakultet u Boru, Srbija
Sažetak
Projekat Izgradnja 'Nove' topionice bakra i fabrike za proizvodnju sumporne kiseline, koji je pred realizacijom, obuhvata uvođenje novog procesa topljenja koncentrata bakra (Flash Smelting Process). Iz navedenog procesa, uključujući i konvertovanje bakrenca, dobijaće se sekundarna (otpadna) toplotna energija-toplotna snaga 37 MWt. Sekundarna (otpadna) energija može da se koristi za tehnološke potrebe (postrojenje za razdvajanje vazduha, sušenje koncentrata, zagrevanje mazuta, regeneracija elektrolita i drugo) i za proizvodnju toplotne i električne energije. Zbog veće potrebe za toplotnom energijom u 'zimskom' periodu (novembar-april) u odnosu na 'letnji' period (april-oktobar) kada ne radi toplifikacija prostora, kapaciteti za proizvodnju električne, odnosno toplotne energije, biće i različito angažovani u oba navedena perioda. S obzirom na nedostatak fosilnih goriva, problem globalnog zagrevanja Zemlje i rast cene energije treba iznaći mogućnost, kod projektovanja i realizacije projekta izgradnje nove linije topljenja, proizvodnje sumporne kiseline i procesa konvertovanja bakrenca, za maksimalno korišćenje sekundarne (otpadne) toplote procesa. Ova toplota može da se koristi za pokrivanje potrebe tehnološkog procesa za toplotnom energijom, za toplifikaciju poslovnog prostora, a ostalo za proizvodnju električne energije.
Abstract
The construction project of 'New' copper smelter factory and sulfuric acid production which is in the implementation process, includes the introduction of a new copper concentrate smelting (Flash Smelting Process), replacement of the current sulfuric acid production process for a double-double adsorption and catalysis. For this process, including converting copper matte, the secondary (waste) heat energy-heat power of about 37 MWt will be received. The secondary (waste) energy can be used for technological needs (air separation plant, concentrate drying, fuel oil heating, electrolyte regeneration, etc.), for heat and electricity. All these considerations would be addressed to the 'winter' period (October-April) due to a greater need for heating in relation to the 'summer' period (April-October) when the heating system is not working. Using steam condensing unit to produce only electricity, its annual production is about 52 GWeh/a (Power 6.6 MWe). If the produced steam is used to produce electricity and heat for the technological needs, the annual electricity output is about 34 GWeh/a and heat about 61 GWth/a. Given the lack of fossil fuels, global Earth warming and the constant energy prices growth, one of the most important thing is to find a possibility for designing and implementation of new lines smelting construction, production of sulfuric acid and converting matte process, maximum use of secondary (waste) heat process to meet technological needs for heat, and the rest is used for electricity generation which success depends on the season and understanding the enterprise management needs. Using steam condensing unit to produce electricity only, its annual production, based on the research, with an increasing level of secondary heat utilization, copper production processes which reduce energy consumption and emissions of greenhouse gases: carbon 2.933 tCO2/tce, sulfur dioxide 0.014 tSO2/tce and nitrogen 8.163 tN2/tce (index 'ce' means coal equivalent).
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