氧化铝蒸发工序用能分析及系统优化节能研究  被引量:1

Research of energy saving optimization system for alumina production evaporation process based on thermal analysis

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作  者:张建智[1] 彭小奇[1,2] 陶焰明 宋彦坡[1] 伍雁鹏[1] ZHANG Jianzhi PENG Xiaoqi TAO Yanming SONG Yanpo WU Yanpeng(School of Energy Science and Engineering, Central South University, Changsha 410083, China Department of Information Science and Engineering, Hunan First Normal University, Changsha 410205, China)

机构地区:[1]中南大学能源科学与工程学院,湖南长沙410083 [2]湖南第一师范学院信息科学与工程系,湖南长沙410205

出  处:《中南大学学报(自然科学版)》2016年第12期4263-4269,共7页Journal of Central South University:Science and Technology

基  金:国家自然科学基金重点资助项目(61134006)~~

摘  要:利用火用分析方法建立氧化铝蒸发工序的能耗模型,运用火用效率等评价准则对工序的用能状况进行分析。基于"三环节"能量系统优化理论提出利用余热回收工序预热原液的能量系统优化方法,建立蒸发工序当前运行状态下能量回收用于预热原液后的系统能耗模型,并进行优化计算。研究结果表明:适当提高蒸发工序入口料液温度可有效降低新蒸汽消耗,从而提高氧化铝生产蒸发工序的用能水平。A energy analyzing model was developed by using exergy method, and the energy consumption level was evaluated according to exergy efficiency and other indexes. Based on "Three part" energy system optimization theory,an optimization scheme of preheating ore pulp with recycled waste heat was proposed. Energy consumption models for the evaporation systems before and after optimization were developed, and optimization computations were made. The results show that increasing ore pulp temperature at inlet of evaporator process can effectively reduce the amount of consumed new vapour and therefore improve the energy utilization level of the evaporation process.

关 键 词:氧化铝 蒸发工序 火用分析 系统优化 节能 

分 类 号:TF802.62[冶金工程—有色金属冶金]

 

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