Fuel consumption analysis in cooper melting and refining plants

Abstract

Cathode cooper production and refining include significant consumption of almost all-conventional fuel types. The given consumption is high in specific and in nominal way. Especially high fuel value content is on Cathode cooper production line within Melting and Electrolyze plants. In this paper fuel consumption analysis is done in concrete case of Melting and Refining cooper plants in Bor. For consumption analysis purposes all fuels are calculated as prime energy. In order to complete picture of equivalent used energies the equivalent fuel (Equivalent coal) calculations are done. For Electrical energy equivalent as Equivalent energy Serbian Energy system efficiency grade 0.53997 is used and for fuel as Equivalent energy is equal to working mass Lower Heating Value. The four fuels (electricity, coal in power plant, flame furnace coal and crude oil) have had the biggest participation in equivalent fuel consumption in Melting and Refining plants for the years 1996, 1997, 2000, 2001 and 2002 which is confirmed by given analysis, The Electricity consumption has decreased from 50858,9 t (28,9%) in year 1996 to 31 490,1 t (23,9%) in year 2002. The coal consumption in power plants has increased from 43272,2 t (24,6%) in year 1996, to 61872,4 t (46,9%) in year 2002. The coal consumption in flame furnaces has small reduction tendency and in equivalent fuel was 37405,4 t (21,2%) in year 1996, whilst in year 2002 was 33271,1 t (25,2%). The crude oil consumption has decreased drastically from 35997,1 t (20,4%) in year 1996, to 1694,8 t (1,3%) in year 2002, due to the its substation by other fuels because of the very high price.

Topljenje i rafinacija bakra podrazumeva potrošnju znatnih količina skoro svih vrsta konvencionalnih energenata. Data potrošnja visoka je kako u nominalnom tako i u specifičnom obliku. Posebno visoko učešće u potrošnji energenata zastupljeno je u pogonima Topionice i Elektrolize. U ovom radu izvršena je analiza potrošnje energenata na konkretnom primeru Topionice i rafinacije bakra u Boru. Radi detaljnije analize svi energenti svedeni su na primarnu energiju. U cilju kompletiranja slike o potrošnji energenata izvršeno je još i svođenje na uslovno gorivo (ekvivalentni ugalj). Za svođenje električne energije na ekvivalent energije uzet je stepen iskorišćenja energetskog sistema Republike Srbije koji iznosi 0,53997, dok je kao ekvivalent energije goriva uzeto da je jednak donjoj toplotnoj moći radne mase. Analiza potrošnje energenata u pogonima TIR-a za 1996 1997, 2000, 2001 i 2002 gorivu ukazuje da najveće učešće u potrošnji. izraženo u jedinicama uslovnog goriva, imaju četiri energenata: električna energija ugalj u termoelektrani, ugalj u plamenim pećima i mazut. Potrošnja električne energije ima tendenciju pada i smanjena je sa 50858,9t(28,9%) u 1996. na 31 490,1t (23,9%) u 2002.godini. Potrošnja uglja u termoelektranama povećala se od 43272,2t (24^6%) u 1996, na 61872,4t (46,9%) u 2002. godini. Potrošnja uglja u plamenim pećima ima tendenciju blagog smanjenja i u jedinicama uslovnog goriva iznosila je 37405,4t (21,2%) 1996, dok je 2002. iznosila 33271,1t (25,2%). Potrošnja mazuta drastično je opala sa 35997,1t (20,4%) u 1996, na 1694,8t (1,3%) u 2002. godini, što je posledica supstitucije ovog energenta drugim vrstama goriva zbog njegove visoke cene.