高压水热反应改性球化结构型煤半焦脱硫工艺研究  

The studies of high-pressure water hot reaction and modified ball structure of briquette semi-coke desulfurization process

作　　者：田芳[1] 张永发[2] 李春虎[3] 

机构地区：[1]太原师范学院化学系,山西省太原市030031 [2]太原理工大学煤科学与技术教育部和山西省重点实验室,山西省太原市030024 [3]中国海洋大学化学化工学院,山东省青岛市266100

出　　处：《中国煤炭》2011年第2期77-80,103,共5页China Coal

基　　金：国家"973"重大项目;高温煤气脱硫及硫化再生机理的研究(批准号:G1999022104-1);山西省自然科学基金;球化结构炭化型煤炭化机理和其中界面结合物特性研究(批准号:2010011014-1)

摘　　要：考察了在高压釜中,改性剂、压力对球化结构型煤半焦表面性能及其脱硫性能的影响,重点进行了H2O2两次分步改性半焦制备SO2脱硫剂新工艺的研究。研究表明,在1.25~5.60 MPa压力范围内：5%H2O2一次改性半焦,随压力增大,半焦表面积显著增大,脱硫性能显著提高,且随压力增强呈抛物线变化;5%H2O2两次氧化改性半焦,半焦表面极性基团酚羟基和醌型羰基的含量明显增大,改性半焦比表面积达到234.01 m2/g-1,比原样提高了15.6倍。以SO2转化率大于70%为标准,烟道气SO2浓度为1.5%左右时,穿透时间为15 h,硫容达到7.69%,比原样提高15倍。Studied the influence of modifier and pressure on the spheroid structure coal semi-coke surface performance and the desulphurization performance in high pressure autoclave,focusing on the H2O2 two times oxidation modifications semi-coke to prepare the SO2 sorbent new process.Study showed that 1.25 ~ 5.60MPa pressure range： 5% H2O2 one time modification semi-coke,along with pressure build-up,the semi-coke surface area obviously increased,the desulfurization performance significantly improved,and assumes the parabola change along with the pressure enhancement;5%H2O2 two times activates the modification semi-coke,the modified semi-coke surface polar group phenol hydroxyl and the quinoa form carbonyl＇s content increases obviously,Modification of surface area of semi-coke has reached 234.01 m2·g-1,increased 15.6 times than that of original.To take the SO2 conversion rate as the standard,while the flue gas SO2 density of 1.5%,and the penetration time of 15h,the sulfur content can reached to 7.69%,increased by 15 times than that of original.

关 键 词：高压水热反应改性 煤半焦 烟道气 脱硫 

分 类 号：TQ534.9[化学工程—煤化学工程]