Zhang Chenghu, Zou Dezhi, Huang Xinpeng, Lu Weijun
School of Architecture, Harbin Institute of Technology, Harbin 150001, China.
Inner Mongolia Key Laboratory of Green Building, College of Architecture, Inner Mongolia University of Technology, Huhhot 010051, China.
Membranes (Basel). 2021 Dec 30;12(1):47. doi: 10.3390/membranes12010047.
To reduce operating costs on the basis of ensuring the desulfurization efficiency in a wet flue gas desulfurization system, a theoretical model was put forward, and a calculation method was set up. Correlations between reaction zone height, flue gas inlet temperature, slurry inlet temperature, gas-liquid ratio and desulfurization efficiency were found. Based on the heat and mass transfer model of the spray tower, the integrated system of desulfurization tower and open slurry pool and the flue gas desulfurization-waste heat recovery system were established. Additionally, the effect of outdoor wind speed, heat dissipation area and ambient temperature on the slurry equilibrium temperature in the integrated system were analyzed. The results show the slurry equilibrium temperature of the desulfurization system is negatively correlated with outdoor wind speed and heat dissipation area, and positively related to ambient temperature. The slurry temperature is the main factor that affects the performance of the wet flue gas desulfurization system. Finally, based on the Harbin heating group Hua Hui hotspot energy-saving reconstruction project, a case analysis was conducted, which proves the flue gas desulfurization-waste heat recovery system is profitable, energy saving and a suitable investment project.
为在确保湿法烟气脱硫系统脱硫效率的基础上降低运行成本，提出了理论模型并建立了计算方法。发现了反应区高度、烟气入口温度、浆液入口温度、气液比与脱硫效率之间的关联。基于喷淋塔的传热传质模型，建立了脱硫塔与开放式浆液池一体化系统以及烟气脱硫-余热回收系统。此外，分析了室外风速、散热面积和环境温度对一体化系统中浆液平衡温度的影响。结果表明，脱硫系统的浆液平衡温度与室外风速和散热面积呈负相关，与环境温度呈正相关。浆液温度是影响湿法烟气脱硫系统性能的主要因素。最后，基于哈尔滨供热集团华汇热点节能改造项目进行了案例分析，结果证明烟气脱硫-余热回收系统具有盈利性、节能性，是一个合适的投资项目。
