延迟焦化主分馏塔工艺模拟与扩能分析

华南理工大学学报（自然科学版） ›› 2006, Vol. 34 ›› Issue (12): 110-114.

延迟焦化主分馏塔工艺模拟与扩能分析

王春花¹陈清林¹华贲¹陈梓剑²

1. 华南理工大学传热强化与过程节能教育部重点实验室, 广东广州 510640;2. 中国海洋石油总公司惠州炼油厂, 广东惠州 516211

收稿日期:2005-12-02 出版日期:2006-12-25 发布日期:2006-12-25
通信作者: 王春花(1979-) ,女,博士生,主要从事过程能量综合优化研究. E-mail:anglar@126. com
作者简介:王春花(1979-) ,女,博士生,主要从事过程能量综合优化研究.
基金资助:
教育部优秀青年教师计划项目;留学回国人员基金资助项目;广东省自然科学基金资助项目(04020128)

Process Simulation and Enlarged Capacity Analysis of Main Fractionation Column in Delayed Coking Unit

Wang Chun-hua¹ Chen Qing-lin¹ Hua Ben¹ Chen Zi-jian²

1.Key Laboratory of Enhanced Heat Transfer and Energy Conservation ofthe Ministry of Education,South China Univ.ofTech.,Guangzhou 510640,Guangdong,China ;2.Huizhou Refinery of China National Ofshore Oil Corporation,Huizhou 516211,Guangdong,China

Received:2005-12-02 Online:2006-12-25 Published:2006-12-25
Contact: 王春花(1979-) ,女,博士生,主要从事过程能量综合优化研究. E-mail:anglar@126. com
About author:王春花(1979-) ,女,博士生,主要从事过程能量综合优化研究.
Supported by:
教育部优秀青年教师计划项目;留学回国人员基金资助项目;广东省自然科学基金资助项目(04020128)

摘要/Abstract

摘要： 运用流程模拟软件SimSci/PRO Ⅱ探讨了延迟焦化分馏单元的模拟策略. 根据延迟焦化分馏单元无法确定反应油气进料组成和塔底存在非平衡级的特点,采用塔出料反推进料油气组成和塔底换热段与精馏段分段处理的办法,选择Grayson-Streed物性选择集进行模拟. 模拟结果与现场标定数据基本一致. 根据模拟计算结果,发现分馏塔操作中存在气液流量在各塔板明显波动的问题,同时进行了主分馏塔的水力学核算,绘出了塔板的负荷性能图,发现大部分塔板存在漏液问题,堵住一定数目阀孔能解决漏液. 最后根据工厂的生产要求,对装置扩能22%后的主分馏塔进行了模拟和水力学核算. 结果表明,对分馏塔进行局部脱瓶颈改造能满足扩能后生产能力的要求.

关键词: 延迟焦化装置, 流程模拟, SimSci/PRO Ⅱ, 水力学分析

Abstract:

This paper aims at the strategies to simulate the distillation process in a delayed coking unit(DCU)by using the simulation software of SimSci/PRO Ⅱ.Since the components of the reaction vapor in the DCU fractionation column are unknown and there are imbalanced trays at the bottom of the column,the compo sition of the high-temperature oil and gas feedstock in the fractionation column is inversely conjectured according to the composition of the products,an d the whole column is divided into two sections,namely the bottom heat-exchange section and the rectifying section.Then, the Grayson-Streed property choice method is adopted to simulate the fractionation process.Th e simulated results.which are consistent with the on-site ope rational data,indicate that there is an obvious fluctuant flowrate of the gas and the liquid along the trays.Moreover,a hydraulics calculation is carried out for.the main fractionation column,and a tray-load performan ce diagram is drawn .Th e results show that weeping ex-ists at most trays,which call be solved by plugging up some holes in the weeping trays.Finally,in accordance with the production requirements in the refinery,a simulation and a hydraulics calculation are perform ed for the fr~ tionation column whose processing capacity is increased by 22% .It is thus concluded that a partial revam ping of the fracfionation column can meet the requirements of production with enlarged capacity.

Key words: delayed coking unit, process simulation, SimSci/PRO Ⅱ, hydraulics analysis

王春花陈清林华贲陈梓剑. 延迟焦化主分馏塔工艺模拟与扩能分析[J]. 华南理工大学学报（自然科学版）, 2006, 34(12): 110-114.

Wang Chun-hua Chen Qing-lin Hua Ben Chen Zi-jian. Process Simulation and Enlarged Capacity Analysis of Main Fractionation Column in Delayed Coking Unit[J]. Journal of South China University of Technology (Natural Science Edition), 2006, 34(12): 110-114.