Study On The Occurrence Status Of Organic Sulfur In High Sulfur Coal

In China’s energy structure,coal has the largest proportion.The rational and efficient utilization of coal has always been an important topic.High-sulfur coal is seldom used because of high pollution,but it can be reduced to minimal pollution by now.It is an embodiment of rational utilization to make use of high sulfur coal.We seldom research studies generally high sulfur coal occurrence of its structure,the research will lead us to know the high sulfur coal occurrence of sulfur in form,we also can understand the distribution of organic sulfur in high sulfur coal and the structure of the occurrence form.It will provide useful information for comprehensive utilization of high sulfur coal and clean utilization.The organic small molecules in high sulfur coal were separated by solvent extraction and column chromatography,and the sulfur compounds were identified by GCMS.The macromolecule in high-sulfur coal have been turned into small molecules by thermal cracking,and sulfur compounds have been identified by GCMS.This study is divided into several parts: the selection of extraction solvent,the extraction methods,the improvement of the experiment,the solvent extraction experiment of high sulphur coal and gas coal,the industrial analysis and elemental analysis,the column chromatography and GCMS,the thermal cracking and GCMS.This study has detected 14 kinds of sulfur compounds after solvent extraction and 8 kinds of sulfur compounds after thermal cracking.Most of them are thiophenic sulfur compounds,they are benzene,thiophene compounds,diphenyl thiophenic sulfur compounds,three benzene.We also discovery sulfur monomers(S8)and sulfide.The composition of sulfur compounds in macromolecules and small molecules is different from of gas coal.