摘要
根据煤中硫的着火点，发现硫的固定主要发生在温度低于５００℃的阶段，升温时间应小于３０ｍｉｎ．Ｆｅ２Ｏ３用量增多，ＣａＳＯ３转化生成ＣａＳＯ４的量增多；通过ＣａＯ＋ＳＯ２＋０．５Ｏ２→ＣａＳＯ４的反应来模拟实际的煤燃烧时硫的固定过程，发现Ｆｅ２Ｏ３的加入对硫的固定起着较大的促进作用，而且Ｆｅ２Ｏ３主要是促进ＣａＯ＋ＳＯ２→ＣａＳＯ３这一反应过程．
According to the ignition point of sulphur in coal,the sulphur capture reaction process was divided into two stages in this paper.It was found that sulphur capture in coal ash mainly happened in stage of below 500℃.Relationship between time of raising tempera ture and fraction of sulphur capture was obtained that time of raising temperature must be below 30 min.It was found that the more Fe 2O 3 was used,the more CaSO 3 changed into CaSO 4.The actual process of sulphur captured in coal ash was simulated through the reaction CaO+SO 2+0.5O 2→CaSO 4. At last some special experiments were designed and proved that Fe 2O 3 mainly promoted the reaction CaO+SO 2→CaSO 3.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第1期65-67,共3页
Environmental Science
