(1. 中南大學(xué) 能源科學(xué)與工程學(xué)院，長(zhǎng)沙 410083；2. 中國(guó)鋁業(yè)公司 河南分公司，鄭州 450041)
摘 要: 以 傳遞理論與 分析方法為基礎(chǔ)，建立混聯(lián)法氧化鋁生產(chǎn)過(guò)程 耗復(fù)雜灰箱模型；選取某氧化鋁企業(yè)2008年兩個(gè)月生產(chǎn)數(shù)據(jù)進(jìn)行計(jì)算，得到氧化鋁生產(chǎn)過(guò)程中各子工序的供給 、 損及 效率。計(jì)算結(jié)果表明：供給 主要消耗在熟料燒成、焙燒、管道化溶出和蒸發(fā)工序，占總供給 的85%左右；熟料燒成工序 效率最低，僅為7%左右；針對(duì) 損較大的工序展開節(jié)能改造可有效降低生產(chǎn)能耗。采用 分析方法對(duì)流程工業(yè)能耗狀況進(jìn)行分析，可以有效評(píng)價(jià)企業(yè)能源利用狀況及能量損失，有利于有針對(duì)性地挖掘企業(yè)節(jié)能潛力，降低企業(yè)能耗。
關(guān)鍵字: 系統(tǒng)節(jié)能； 分析；氧化鋁生產(chǎn)；流程工業(yè)
（1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Henan Branch, Aluminum Corporation of China, Zhengzhou 450041, China）
Abstract:A complex grey-box model of alumina production in mixed-combined process was built on the basis of exergy transfer theory and analysis means. According to the two months production data obtained from a certain aluminun corporation, the loss and efficiency of the exergy were calculated. The calculation results show that the supplied exergy is mainly consumed in such unit processes as slurry sintering, aluminium trihydrate calcining, tube digestion and evaporation, which consumes about 85% of the exergy in the alumina production. The slurry sintering process has the lowest exergy efficiency of about 7%. The innovation for energy saving can be proceeded on the unit process with low exergy efficiency. It is not only effective for evaluation of enterprise utilization of energy and quality of energy loss, but also advantageous for making the best of the potential energy saving capacity of enterprise by using exergy analysis method.
Key words: system energy saving; exergy analysis; alumina production; process industry
