再生塔回流介质温升分析及优化

Analysis on Reflux Medium Temperature Rise at Regeneration Tower and Its Optimization

液位回流控制是容器液位工艺过程控制的重要手段,对精馏工艺、吸收和再生工艺及容器的液位维持等生产过程起到关键作用。介绍了MDEA再生塔顶回流系统介质温度升高的现象,从能量平衡的角度对介质温度升高的原因进行了系统分析,确定了介质温度升高的能量来源,计算了系统内介质温升的最大值,提出了保持分离罐回流系统平稳运行的工艺设计优化措施和建议,对类似液位回流控制系统的工程设计及运行操作具有参考意义。

Liquid level recirculation control is an important means of process control, which plays a key role in the production process of rectification process, absorption and regeneration and liquid level maintenance of the vessel. The phenomenon of medium temperature rise which occurs in the top reflux system of MDEA regeneration tower is introduced. The reason of medium temperature rise is systematically analyzed from the perspective of energy balance. In the system, the source of medium temperature rise is determined, and the maximum value of temperature rise is calculated. In order to maintain the liquid level smoothly in the separation tank, the design optimization measures and suggestions are proposed, which has guiding significance for the engineering design and the operation of liquid level control in the similar system.