Compromising adjustment solution of primary reaction coefficients in ethylene cracking furnace modeling
Compromising adjustment solution of primary reaction coefficients in ethylene cracking furnace modeling
复制标题
乙烯裂解炉建模中初级反应系数的折衷调整方案
DOI：
10.1016/j.ces.2012.05.039
复制
发表时间：
2012-10
影响因子：
4.7
通讯作者：
Gu, Xiangbai
中科院分区：
文献类型：
--
作者：
Geng, Zhiqiang;Cui, Yunfei;Xia, Lirong;Zhu, Qunxiong;Gu, Xiangbai
精确的机理模型是乙烯热解过程仿真、控制和优化的基础。在Kumar和Kunzru提出的Kumar动力学模型中，主反应方程中有10个可变的选择系数和较小的动力学参数。它们主要取决于油的性质，特别是油的成分。本文提出了一种基于目标分解策略和误差校正混沌优化（ECCO）算法的妥协平差解的新方法，主要获取合理的主系数，必要时获取动力学参数。其核心思想是基于ECCO算法实现一次反应中碳、氢的原子平衡，以及产物产率误差最小。它比其他文献中提到的现有方法在总体元素平衡和最小产率误差之间取得了更好的折衷。它还考虑了动力学参数的微小调整。此外，该方法已被证明是有效的，适用于许多不同性质的石脑油。这些数据来自一个真实的乙烯工厂。研究结果对优化操作条件的设计及乙烯裂解炉的控制具有一定的指导意义。
A precise mechanistic model is fundamental in simulation, control and optimization of ethylene pyrolysis process. In the Kumar kinetics model proposed by Kumar and Kunzru, there are ten changeable selectivity coefficients and minor-changeable kinetics parameters in the primary reaction equation. They are mainly determined by oil properties, especially the oil composition. This paper proposes a new method of compromising adjustment solution based on target decomposition strategy and Error Correction Chaos Optimization (ECCO) algorithm to mainly acquire rational primary coefficients, and kinetics parameters when necessary. The core idea is to realize atoms balances of the carbon and hydrogen in the primary reaction, as well as minimum yield errors of products based on ECCO algorithm. It exceeds existing methods mentioned by other literatures in its preferable compromise between overall elemental balances and minimal yield errors. It also takes minor tuning of kinetics parameters into consideration. Moreover, this method has been proven effective and applicable to many naphthas with different properties. These data are from a real ethylene plant. The results are helpful in the design of optimal operational conditions and ultimately in controlling of ethylene cracking furnaces which will be discussed briefly.
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通讯作者：
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