58.石炭液化油中のヘテロ化合物のキャラクタリゼーションと水素化反応性

抄録

Heteroatom compounds in coal liquid distillates obtained from BCL and NEDOL processes were analyzed by GC-AED (Atomic Emission Detector), in order to identify thier structures and to classify their reactivities in the single- and two-stage catalytic hydrotreatments with NiMo supported onalumina.under the conditions of 360-450℃ and 30-120min at the hydrogen pressure around 15MPa. All the heteroatoms (N, S, or O)-containing compounds were simultaneously detected and distinguished by GC-AED, and most of them were identified by using standard samples and GC-MS. The single-stage hydrotreatment reduced the contents of all the heteroatoms, the removal conversion being in the order of S>O≧N. The higher temperature and hydrogen pressure enhanced the denitrogenation reactions. The two-stage hydrotreatment was more effective for the denitrogenation and deoxygenation probably because of hydrogen renewal in between the stages and the combination of lower and higher reaction temperature at each stage.