针对湿式氨-硫酸铵法脱硫几个技术问题与探讨.pdfVIP

针对湿式氨-硫酸铵法脱硫几个技术问题的探讨 靳江波 （内蒙古大唐国际克什克腾煤制天然气有限责任公司，内蒙古赤峰市克什克腾旗大唐克 旗煤制气，025350） Discussion on some questions of wet ammonia-ammonium sulfate FGD technology Jin Jiangbo Inner Mongolia Datang International keshiketeng coal gas Co., Ltd （ ） ABSTRACT：With characteristics of high adaptability and “十二五”是国家节能减排的关键时期，新 efficiency to different kinds of coals - especially high 公布的《火电厂大气污染排放标准》征求意见稿 [1] sulphur coal , Wet Ammonia-Ammonium sulfate FGD 中，SO 排放标准越来越严格，远远超出旧标 2 technology is popular with the market. Although FGD 准和2009年初稿，甚至超越欧美现用标准。新 system is enlarged, there are some questions in the course of 建火电项目的SO 3 2 排放限值为100 mg/Nm ，现 equipment election, design, construction, operation and so 有项目SO 3 2 的排放限值为200mg/Nm ，至2014 on, which may has effect on long-period safe operation of 年也要达到100 mg/Nm3 ，这也就意味着，要实 the unit. According to the actual condition of one factory of 现达标排放，在燃用低硫煤(硫分小于1%)的同 Inner-Mongolia, the paper analysed and explored some 时，还要安装脱硫效率超过95%的烟气脱硫装置。 important questions of Wet Ammonia-Ammonium sulfate 湿式氨-硫酸铵法脱硫技术对于不同煤种—尤其 FGD technology: the management of coal to boiler, the 高硫煤—具有很强的适应性及较高的脱硫效率， control of dust density, the choice of liquid-gas ratio, 逐渐得到市场的青睐。但是伴随着脱硫装置的规 ammonia escape and aerosol, enrichment of chloride ion 模化、扩大化，在设备选型、设计、施工、运行 and metal ions, reliability of ammonia source, market of 等过程中逐渐暴露出一些问题，对系统的长周期 ammonia sulfate, and so on. 安全运行造成影响。下面就针对湿式氨-硫酸铵 法脱硫技术值得关注的几个问题如：入炉煤的管 kEY WORD：Wet FGD, ammonia FGD, ammonium sulfate, 理、烟气含尘的控制、液气比的合理选择