Theoretical prediction of product distribution of the pyrolysis of high density polyethylene
Theoretical prediction of product distribution of the pyrolysis of high density polyethylene
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DOI：
10.1016/j.jaap.2006.07.009
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发表时间：
2007-10
影响因子：
6
通讯作者：
J. F. Mastral;C. Berrueco;J. Ceamanos
中科院分区：
文献类型：
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作者：
J. F. Mastral;C. Berrueco;J. Ceamanos
这项工作的主要目标是制定和开发一个模型，预测在聚乙烯热解过程中获得的产品分布。为了做到这一点，在一个基本机制的基础上发展了一个机制模型。该模型使用了少量的基本动力学步骤，包括引发、β-裂解、H-抽提、芳构化和自由基结合。该机理允许预测在热解过程中得到的化合物。由于考虑了大量的物质，热解过程的模拟需要解复杂的常微分方程组。在自由落体装置上研究了不同温度(500-1000℃)和不同停留时间(0.52-2.07s)下的热解过程，得到了实验结果的验证。
The main objective of this work is the formulation and development of a model that predicts the product distribution obtained in the pyrolysis of polyethylene. In order to do this a mechanistic model has been developed based on a radical mechanism. This model uses a small number of elementary kinetic steps, including initiation, β-scission, H-abstraction, aromatization and radical combination. The mechanism allows the prediction of the compounds obtained during the pyrolysis. Given the great number of species considered, the simulation of the pyrolysis process requires the solution of complex systems of ordinary differential equations. The results obtained have been validated with experimental results obtained in a free fall installation in which the pyrolysis process has been studied at different temperatures (500–1000°C) and residence times (0.52–2.07s).