Beijing Research Institute of Coal Chemistry China Coal Research Institute National Energy Technology &
Equipment Laboratory of Coal Utilization and Emission Control ( China Coal Research Institute) State Key
Laboratory of High Eficient Mining and Clean Uilliation of Coal Resources ( China Coal Research Institute)

为探索炼焦煤中硫的存在形态及各形态硫的迁移变化规律,研究了山西沁能焦煤在停留时间30 min,热解终温为450~950℃条件下煤中全硫及各形态硫热解脱除规律,采用傅里叶红外光谱及X射线光电子能谱对原煤及焦样中有机硫化物具体形态及相对含量进行了分析。结果表明,煤样中有机硫化物可分为硫醚、含硫氧化物、二硫化物及Ar—S类硫化物(芳香族类及噻吩类硫化物)4类;热解过程中全硫脱除率升高主要是由于各类有机硫化物分解析出,硫化铁硫对全硫脱除贡献率有限;热解过程中,煤中各类有机硫化物间存在相互转化的现象。

In order to explore the sulfur speciation of coking coal and its transfer laws during prolysis, taking Qinneng coking coal as the study subject, the paper st udied transfer laws of total sulfur and various sulfur speciation in coking coal at pyrolysis temperature 450 ~ 950。C for 30 minutes. The qualitative and semi- quantitativ e analysis of organic sulfide speciation and its relative content were conducted through Fourier transform infrared spectroscopy ( FTIR) and X- ray photoelectron spectr oscopy ( XPS). The results showed that organic sulfide in coking coal could be divided into four categories, including sulfur ether, sulfur oxides, disulfide and Ar- -S typ e sulfide ( aromatic species and thiophene sulfides thiophene) . The total sulfur removal rate was improved mainly due to different kinds of organic sulfide preciptitation during prolysis, iron sulfides was less contributed to total sulfur removal rate. The various kinds of organic sulfide in coal transformed mutually during pyrolysis.

中国煤炭科工集团重点基金资助项目(2013ZD007)；