双流法溶出过程操作参数优化方法

doi:10.11949/j.issn.0438-1157.20161688

化工学报 ›› 2017, Vol. 68 ›› Issue (3): 1014-1022.DOI: 10.11949/j.issn.0438-1157.20161688

双流法溶出过程操作参数优化方法

闫雨晴, 谢永芳, 王晓丽, 尉思谜, 张杏婵

中南大学信息科学与工程学院, 湖南长沙 410083

收稿日期:2016-11-30 修回日期:2016-12-05 出版日期:2017-03-05 发布日期:2017-03-05
通讯作者: 王晓丽,xlwang@csu.edu.cn
基金资助:
国家高技术研究发展计划项目（2014AA041803）；中央高校基本科研业务费专项资金（2016zzts349）。

Optimization method of double-stream alumina digestion process parameters

YAN Yuqing, XIE Yongfang, WANG Xiaoli, WEI Simi, ZHANG Xingchan

School of Information Science and Engineering, Central South University, Changsha 410083, Hunan, China

Received:2016-11-30 Revised:2016-12-05 Online:2017-03-05 Published:2017-03-05
Contact: 10.11949/j.issn.0438-1157.20161688
Supported by:
supported by the National High Technology Research and Development Program of China (2014AA041803) and the Fundamental Research Funds for the Central Universities of China (2016zzts349).

摘要/Abstract

摘要：

氧化铝双流法溶出是拜耳法氧化铝生产中的关键环节，是我国特有的生产工艺。但是，双流法溶出过程中闪蒸器的自蒸水能力没有充分发掘，结疤造成新蒸汽用量不断增加，而人工设定工作点，造成能耗过高。因此，本文建立双流法溶出过程的(火用)优化模型，在一个酸洗周期内根据结疤程度将溶出过程分为3个阶段，并提出一种自适应状态转移算法分别对双流法溶出过程的3个阶段进行操作参数的优化，得到有利于节能降耗的操作条件，为生产提供操作指导。

关键词: 氧化铝, 双流法溶出, (火用), 优化, 酸洗周期, 状态转移算法

Abstract:

The double-stream alumina digestion process is a key production chain in Bayer process of alumina production. It is the unique production technology in China. However, the double-stream alumina digestion process has problems that the evaporate water capacity of flash vessel is not fully exploited, scaling causes increased new steam consumption, meanwhile, working points are set manually, which causes the high energy consumption. Thus, the exergy optimization model of the double-stream alumina digestion is established, and the digestion process is divided into three stages based on the degree of scab in a pickling cycle. An adaptive state transition algorithm is proposed to optimize the operating parameter of the three stages of the digestion process, respectively. Then, optimal process control parameters are obtained, which is meaningful to provide suggestions for practical production.

Key words: alumina, double-stream digestion, exergy, optimization, cycle of acid cleaning, state transition algorithm

中图分类号:

TQ021.8

闫雨晴, 谢永芳, 王晓丽, 尉思谜, 张杏婵. 双流法溶出过程操作参数优化方法[J]. 化工学报, 2017, 68(3): 1014-1022.

YAN Yuqing, XIE Yongfang, WANG Xiaoli, WEI Simi, ZHANG Xingchan. Optimization method of double-stream alumina digestion process parameters[J]. CIESC Journal, 2017, 68(3): 1014-1022.

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双流法溶出过程操作参数优化方法

Optimization method of double-stream alumina digestion process parameters

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