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用响应表面方法和人工神经网络评估通过蒸汽改造和二甲基乙烯部分氧化生产气
Karim Mansouri1, Fatemeh Bahmanzadegan1, Ahad Ghaemi2
1School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846, Iran.
人工神经网络 (ANN) 和响应表面方法 (RSM) 模拟了从二甲基乙醇生成. 该模型在优化气生产和最大限度地减少一氧化碳排放方面表现出卓越的预测准确性.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 催化剂是一种催化剂.
- 热力学是一种热力学.
背景情况:
- 乙二甲基以太 (DME) 是生产的一个有前途的原料.
- 优化DME蒸汽改造和部分氧化对于高效的气产生至关重要.
- 准确的热力学建模对于工艺设计和控制至关重要.
研究的目的:
- 开发和比较人工神经网络 (ANN) 和响应表面方法 (RSM) 模型,用于预测DME改革中的热力学数据.
- 确定影响和一氧化碳分子分数的关键因素.
- 为了确定最大限度地提高H2产量和最大限度地减少CO排放的最佳工艺条件.
主要方法:
- 人工神经网络 (ANN) 使用多层感知子 (MLP) 和辐射基函数 (RBF) 算法.
- 响应表面方法 (RSM) 使用二级模型.
- 优化ANN配置,并使用平均平方误差 (MSE) 评估预测性能.
主要成果:
- 无论是ANN还是RSM模型都准确地预测了热力学数据.
- 与RSM (0.9771) 相比,ANN模型实现了更高的预测准确度 (0.9994).
- 在O/C = 0.4,S/C = 2.5和250°C时确定了最高H2生产和最低CO排放的最佳条件.
结论:
- 对于DME改革过程,ANN模型,特别是使用Levenberg-Marquardt算法的MLP,提供了卓越的预测能力.
- RSM为热力学数据建模提供了一个可行的,尽管不太准确的替代方案.
- 鉴定到的最佳条件为DME的工业规模气生产提供了有价值的见解.
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