Review of the characteristics and graded utilisation of coal gasification slag

Raw coals as well as fine gasification ashes from pulverized coal gasifier and coal water slurry (CWS) gasifier were studied by proximate analysis, ultimate analysis, FTIR and TG-MS to determine the characteristics of structure and pyrolysis behavior of fine gasification ashes and raw coals with different coal gasification technologies Some volatile matter remained in fine gasification ash after coal gasification, and the volatile matter content of ash was related to the gasification technology During gasification, part of the functional groups kept undecomposed and rearrangement of molecular structures caused formation of some relatively stable functional groups, such as phenolic aldehyde, carbonate minerals and oxy-compound structures

Huo Wei

Papers

Functional groups and pyrolysis characteristics of fine gasification ashes and raw coals