邻甲酚塔的参数优化和控制分析.pdf

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进展
2014年第33卷增刊1
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
89
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研究开发
邻甲酚塔的参数优化和控制分析
郑志刚
(北京石油化工工程有限公司,北京100107)
摘要:精馏塔是石油化工和医药领域常见的生产过程设备,本文利用 Aspen Pus软件分别采用简捷法和严格法
对提酚装置中邻甲酚塔进行了设计计算。针对本项目研究的邻甲酚精馏塔,首先通过简捷法估算出精馏塔的回流
比、塔板数以及进料位置。然后采用严格法的灵敏度分析得出回流比为6、塔板数为80块、进料位置为30。增加
精馏塔回流比5%,分析回流比变化对塔板温度的影响,发现精馏段灵敏板的位置为26块,提段灵敏板的位置
为43块。分別采用了精馏段温度控制方案和提馏段温度控制方案研究在进料流量、进料组成以及进料温度波动
时,精馏塔的动态响应过程。研究表明:提馏段温度控制方案较精馏段温度控制方案具有明显的动态响应快,抗
干扰能力强,建立平衡时间短等优点。
关键词:精馏塔;精懈塔参数优化;精馏段温度控餬;提馏段温度控制
Parameter optimization and control analysis of o-cresol column
ZHENG Zhigang
Beijing Petrochemical Engineering Co., Itd, Beijing 100107, China)
Abstract Distillation column is a common process device in pretochemical and pharmaceutica
industry. In this paper, short-cut method and rigorous method were used for the design of
o-cresol column by Aspen Plus. Firstly, short-cut method was used for estimating reflux ratio,
number of trays and feed location of o-cresol column in the study project. Reflux ratio was 6
number of trays was 80 and feed location was the 30th plate obtained by sensitivity analysis o
rigorous method. If reflux ratio increased by 5, the position of sensitive tray on the rectifying
section was 26 and the position of sensitive tray on the stripping section was 43 by analyzing the
effect of reflux ratio on trays temperature. When feed flowrate, feed composition or feed
temperature fluctuated, temperature control of the rectifying section and temperature control o
the stripping section were used separately to study the dynamic response of the distillation
column. Compared with temperature control of the rectifying section, temperature control of the
stripping section had the advantage of fast response time, strong anti-interference ability and
short balance time
Key words: distillation column; parameter optimization of distillation column; temperature
control of rectifying section; temperature control of stripping section
在工业生产过程中,石油化工工业的能耗所占泛,如何降低精馏塔的能耗成为人们一直思考的问
比例最大,而石油化学工业中能耗最大者为分离操题。因此,对精馏过程的控制与节能优化提出了很
作,其中又以精馏的能耗居首口。精馏过程是一个高的要求。提酚装置是煤制油工艺中一个常见装
复杂的传质传热过程,表现为:过程变量多,被控
变量多,可操纵的变量也多2。随着石油化工行业作者:郑志网(1985-),男,工程师,主要从事石油化工设计研
的快速发展,精馏塔在其领域内的应用越来越广究。 E-mail laigang(@126