煤燃烧前温和热解汞和硫的释放特性研究.PDF

第 29 卷 第 20 期 中 国 电 机 工 程 学 报 Vol.29 No.20 Jul. 15, 2009 2009 年 7 月 15 日 Proceedings of the CSEE ©2009 Chin.Soc.for Elec.Eng. 35 0258-8013 (2009) 20-0035-06 TQ 530 A 470 10 文章编号： 中图分类号： 文献标志码： 学科分类号： ⋅ 煤燃烧前温和热解汞和硫的释放特性研究 张成，曹娜，邱建荣，陈刚 (煤燃烧国家重点实验室(华中科技大学) ，湖北省 武汉市 430074) Study on Mercury and Sulfur Releasing Characteristics During Mild Thermal Upgrading Before Coal Combustion ZHANG Cheng, CAO Na, QIU Jian-rong, CHEN Gang (State Key Laboratory of Coal Combustion (Huazhong University of Science and Technology), Wuhan 430074, Hubei Province, China) ABSTRACT: Two coal samples with high mercury and sulfur 0 引言 content from Guizhou province were selected in this study. The 我国煤炭资源丰富，并在能源消耗中占主导地 occurrences and contents of mercury and sulfur in these two 位。煤燃烧过程中产生的 SO 和痕量重金属排放给 types of coals were analyzed. The coal samples were then x 环境带来了巨大危害[1-3] 。目前，用于全过程减排 studied for mercury and sulfur releasing characteristics during SO2 的技术方法有：燃烧前煤加工脱硫，燃烧中脱 mild thermal upgrading by using a horizontal tube furnace. The 硫和燃烧后烟气脱硫等。与现有较成熟的燃烧后烟 mercury removal efficiencies of these two types of coals reaches up to the top of 89.5% and 82.8% within the 气脱硫技术相比，煤燃烧前预脱硫技术可以利用热 temperature range from 350-400 ℃, respectively. The removal 解弥补煤燃前洗煤的不足，并且热解产生气量少， of mercury reaches to the ultimate ratio when the coal is heated 易于