28
doi:10.3969/j.issn.10093230.2013.06.009
应用能源技术
2013年第6期（总第186期）
钙硫比对CFB锅炉炉内脱硫效率的影响研究
杨玉环”，张媛媛”
（1.山西平朔煤研石发电有限责任公司，山西朔州036800；
2.华北电力大学可再生能源学院，北京102206）
摘要：炉内脱硫效率影响因素诸多，其中Ca/S是影响循环流化床锅炉炉内脱硫效率的一个重要因素。通过对1060Vh亚临界循环流化床锅炉进行脱硫试验及其所得数据的分析可知：随 Ca/S的增大，炉内脱硫效率也随之增大，当Ca/S小于3时，炉内脱硫效率随其增大变化幅度较大，当Ca/S大于3时，炉内脱硫效率随其增大变化幅度较小；同一Ca/S下，840℃时炉内脱硫效率最大，脱硫剂的反应速度最佳，床温低于或高于这一温度，脱硫效率均降低，且Ca/S为3时，脱硫效率便可达90%以上。不同床温下CFB锅炉炉内脱硫效率随Ca/S改变的变化趋势可为炉内脱硫脱硫剂投入量的多少以及锅炉最佳运行床温的控制提供一定的依据，具有重要的指导意义。
关键调：CFB锅炉；钙硫摩尔比；炉内脱硫；脱硫效率
文献标志码：B
文章编号：10093230(2013)06-0028-03
中图分类号：TK229.4
ResearchonCa/SInfluencesonIn-furnaceDesulfurization
EfficiencyofCFBBoiler YANG Yuhuan', ZHANG Yuan -yuan
(1.Shanxi Pingshuo gangue-fired Power Generation Co.,Ltd,Shuozhou 036800,China; 2.School of Renewable Energy, North China Electric Power University, Beijing 102206, China)
Abstract: There are many influencing factors of in furnace desulfurization efficiency, which Ca/S is an important factor to influence in fumace desulfurization efficiency of CFB boiler. The results are obtained by analyzing the desulfurization experiment and its date of 1060 h subcritical CFB boiler: The in -fumace desulfurization efficiency increasing with Ca/S rising, the changing of infumace desulfurization efficiency increases is bigger while Ca/S was less than 3, but the changing of in furnace desulfurization efficiency increases is smaller while Ca/S was greater than 3. Under the same Ca/S, the in furnace desulfurization efficiency is biggest at 840°C and desulfurizer has the best reaction speed, while desulfurization efficiency is lower when bed temperature below or above 840 °C, and desulfurization efficiency can reach more than 90% when Ca/S is 3. The change trend of in furmace desulfurization efficiency of CFB boiler with Ca/S changing can provide a certain basis for putting amounts of desulfurizer and controlling running bed temperature, which has important guiding significance.
Key words: CFB boiler; Mole ratio of Ca to S; In fumace desulfurization; Desulfurization efficiency
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引言
循环流化床燃烧技术是近几年发展起来的一收稿日期：201305-11
修订日期：20130521
作者简介：杨玉环（1983－），女，硕士，助理工程师，主要从
事循环流化床锅炉清洁燃烧、节能减排技术的研充。
万方数据
种新型高效清洁燃烧技术，具有煤种适应性广、燃烧效率高、负荷调节性能好、低负荷稳燃性能好、灰渣综合利用好等特点(1-2]。此外，循环流化床锅炉另一大待点是具有低SO，和低NO排放浓度。在国内，经过近30a的应用和技术发展，已