用于生产聚乙烯的多区循环反应堆的建模和模拟,具有内部冷却
1Department of Chemical and Petroleum Engineering, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates.
Polymers
|September 28, 2023
概括
多区循环反应器 (MZCR) 的内部冷却显著改善了乙烯聚合. 这种创新的反应器设计通过减少系统内的温度变化来增强乙烯转化.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 聚合物科学 聚合物科学
- 反应工程的反应工程.
背景情况:
- 聚烯是重要的工业聚合物,在高压管状或流化床反应堆中制造.
- 多区循环反应堆 (MZCR) 提供了一种创新的方法,用于连接区域的连续聚合物流.
- 了解反应器动态是优化聚烯生产的关键.
研究的目的:
- 在MZCR中建模和模拟乙烯气相聚合.
- 为了研究内部冷却对反应器温度概况和乙烯转换的影响.
- 为了解决这种先进的聚合技术的行为提供见解.
主要方法:
- 开发了一个全面的计算流体动力学 (CFD) 模型.
- 集成的动量,物质和能量平衡方程.
- 在COMSOL多物理6.1.1.中使用有限差异方法解决模型方程.
主要成果:
- 在起伏部分内加入一个冷却器,使起伏沿线的温度变化从8.0°C降低到4.0°C.
- 内部冷却导致乙烯单通转换率增加7%.
- 模拟提供了有关MZCR热管理的详细见解.
结论:
- 内部冷却是提高MZCR性能的一个有效策略.
- 该CFD模型成功预测了冷却对乙烯转换的积极影响.
- 这项研究验证了MZCR技术在高效的聚烯制造方面的潜力.
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