石灰法单塔脱硫系统数值模拟

Numerical Simulation of Single Tower Desulfurization System With Lime Method

通过对石灰法烟气脱硫系统工艺进行研究,以Aspen Plus模拟软件为平台,对单塔系统的化工过程进行模拟,输入热烟气的热力学参数和操作条件,采用控制变量法,模拟塔内发生的酸碱中和、吸收和氧化反应过程。通过模拟入口烟气流量、SO_2浓度、钙硫比等烟气参数变化趋势,进一步分析各因素对脱硫效率的影响,以期对系统的优化设计提供参考。根据实际装置的运行情况,优化现有的设备和流程,对进一步完善和改进脱硫工艺有着重大的理论意义和实用价值。

Through study on flue gas desulfurization system with lime method, using Aspen Plus simulation software as a platform, the chemical process（acid and alkali neutralization, absorption and oxidation reaction processes） of single tower desulfurization system was simulated by inputting hot flue gas thermodynamic parameters and operating conditions and using the control variable method. By analyzing simulation results of desulfurization system running parameters（e.g. gas, SO2 concentration in flue gas at the entrance, calcium sulfur ratio, liquid gas ratio）, the influence of different factors on the desulfurization efficiency was investigated, which could provide reference for the optimization design of the system.