中南大学学报（自然科学版）2013，Vol.44Issue(1)：362-366,5.
氧化铝生产蒸发工序能耗分析
Energy consumption analysis for evaporation process in alumina refinery
摘要
Abstract
In order to reduce energy consumption of evaporation process in alumina refinery, the errors of tested results were corrected, and thermal and exergy analysis were applied to study the four-effect evaporators and three-stage flashes evaporation system. The results show that the thermal efficiency of the evaporation system is only 15.39%, and the thermal efficiencies of other units are high in thermal efficiencies except for effect IV, which is only 7.23%. The heat losses in the evaporators of effect IV are large, which are mainly in the form of condensed water and exhausted vapor output. The exergy efficiency of the evaporation system is only 19.51%. The exergy utilizing ratios of the evaporators are low and losing ratios are high, respectively, which are the key factors for the improvement of the exergy efficiency of the evaporation system, thus waste heat recovery and utilization of condensed water and exhausted vapor should be enhanced, and the operating parameters in evaporators and usage ways about preheaters should be optimized.关键词
蒸发工序/热/(炯)/节能Key words
evaporation process/ thermal/ exergy/ energy saving分类
矿业与冶金引用本文复制引用
彭小奇,伍雁鹏,李时民,张建智,宋彦坡..氧化铝生产蒸发工序能耗分析[J].中南大学学报（自然科学版）,2013,44(1):362-366,5.基金项目
国家自然科学基金重点资助项目(61134006) （61134006）
国家自然科学基金资助项目(61105080) （61105080）
湖南省自然科学基金资助项目(11JJ4057) （11JJ4057）
