学术论文

      特高硫煤SO2超低排放技术评估

      Assessment of Ultra-Low SO2 Emission Technology for Ultra-High Sulfur Coal

      摘要:
      以燃用特高硫煤的300 MW机组中应用的旋汇耦合脱硫除尘一体化技术为研究对象,对该类技术进行现场测试与评估.测试结果表明:燃煤硫分在5%左右时,脱硫系统的脱硫效率可稳定在99.70%~99.82%,SO2排放质量浓度在23.4~30.8 mg/m3,能够满足SO2超低排放小于35 mg/m3的要求;除尘效率在78.6%~87.8%,颗粒物排放质量浓度稳定在4.60~5.76 mg/m3,能够满足颗粒物超低排放浓度小于10 mg/m3的要求.与脱硫单塔双循环、双塔双循环系统技术改造方案相比,该类SO2超低排放技术的改造与运行费用均有比较大的优势.
      Abstract:
      In this paper,the technology of single tower integrated desulphurization and dust removal purification,which has been applied in the 300 MW ultra-high sulfur coal firing power plant,is tested and evaluated.The test results are obtained using coals with 5% sulfur contents.It is observed from the testing data that the desulphurization efficiency of the system can be stabilized between 99.70% and 99.82% while the SO2 emission concentrations are maintained between 23.4 mg/m3 and 30.8 mg/m3,which meets the ultra-low SO2 emission requirement of less than 35 mg/m3.In addition,the dust removal efficiency ranges between 78.6%~87.8% with the particulate emission concentrations also stabilized between 4.60 mg/m3 ~5.76 mg/m3,which meets the ultra-low particulate matter emission requirement of less than 10 mg/m3.Compared with the single-tower double-cycle technology and the double-tower double-cycle technology,this technology is more cost-effective in the aspects of both retrofit constructions and operations.
      Author: YI Yuping ZHU Fahua ZHANG Wenjie LI Junzhuang DUAN Jiuxiang LI Xiaolong
      作者单位: 国电环境保护研究院,江苏南京,210023
      刊 名: 中国电力 ISTICPKU
      Journal: Electric Power
      年,卷(期): 2017, 50(3)
      分类号: X701 TM621
      在线出版日期: 2017年4月6日
      基金项目: 国家重点研发计划资助项目,the National Key Research and Development Program