乌鲁木齐市煤矿商品燃煤中汞释放研究

Mercury Release of Commercial Coal in Urumqi Mines

利用两个乌鲁木齐市汞含量较高的煤矿商品煤样开展释放试验,结果表明释放温度≥700℃、释放时间≥30 min时,其中汞释放完全,释放规律与国内其他地区高汞燃煤相似。乌鲁木齐市11个煤矿商品燃煤最大总汞释放率研究表明,在一定温度、时间下,汞基本全部释放;最大总汞释放率与煤中汞含量无必然联系;最大总汞释放强度与煤样汞含量呈高度正相关,高汞煤即高汞释放煤。

Via the experiment of two higher levels of mercury coal samples in Urumqi,the release of test results show that when the release temperature ≥700 ℃,release time ≥30 min,the mercury released completely. It indicated that there were similar regular pattern in Urumqi coal compared to other regions. By the study of mercury release of 11 Urumqi coal samples found that at a certain temperature and time,all mercury releases basically. Maximum release rate and mercury concentrations without necessarily linked,but the strength of the maximum coal releases mercury concentrations were positively correlated,high-mercury coal was high released mercury coal.