中国电机工程学报2024，Vol.44Issue(6)：2292-2300,后插17,10.DOI:10.13334/j.0258-8013.pcsee.222956
化学团聚耦合低温省煤器强化除尘协同脱硫废水零排放试验研究
Experimental Study on Chemical Agglomeration Coupled With Low Temperature Economizer to Enhance Dedusting and Zero Discharge Desulfurization Wastewater
摘要
Abstract
Fine particles from coal combustion and desulfurization wastewater from flue gas desulfurization are the difficulties in pollution control of coal-fired power plants.This paper proposes a treatment process,which combines chemical agglomeration with low-temperature economizer to enhance dust removal and cooperates to achieve zero discharge of desulfurization wastewater.Water or desulfurization wastewater added with agglomerating agent is sprayed into the flue in front of low-temperature economizer through double fluid atomization.Fine particles agglomerate and grow up under the action of the liquid bridge force of the chemical agglomeration agent.After the water evaporates in the flue,the liquid bridge force is converted into the solid bridge force,and the fine particles change into large aggregates.Coupled with the low temperature economizer,the electrostatic precipitator can promote the removal efficiency of fine particles.The demonstration test results show that the dust emission concentration can be reduced by 63.1%by running chemical agglomeration system,and the average dust emission concentration within 168 h is 2.66 mg/m3.Based on the operation data,the agglomeration agent injection rate and circulating water flow rate of low-temperature economizer are optimized.Continuous injection of desulfurization wastewater has little impact on the enhanced dust removal effect.The ultra-low discharge and zero discharge of desulfurization wastewater are realized.关键词
化学团聚/强化除尘/低温省煤器/脱硫废水/燃煤电厂/超低排放Key words
chemical agglomeration/dust removal/low temperature economizer/desulfurization wastewater/coal-fired power plants/ultra-low emission分类
信息技术与安全科学引用本文复制引用
王志康,雍恒,杨刚中,熊卓,赵永椿,张军营..化学团聚耦合低温省煤器强化除尘协同脱硫废水零排放试验研究[J].中国电机工程学报,2024,44(6):2292-2300,后插17,10.基金项目
湖北省重点研发计划项目(2020BCA076).Key Research and Development Program of Hubei Province(2020BCA076). （2020BCA076）
