Research on the coal rock and coal quality characteristics and clean utilization of Permian coal in Ningdong coalfield
Based on the geological exploration data of Ningdong coalfield for many years,the coal rock and coal quality characteristics of Permian coal in Ningdong coalfield were analyzed and studied.The research results show that the macroscopic coal-rock characteristics of the Permian coal seams in Ningdong Coalfield are mainly semi-bright coal and semi-dark coal,followed by bright coal and dark coal;the Permian coal in Ningdong coalfield has medium ash content,ultra-low-low sulfur,ultra-low-low phosphorus,ultra-low chlorine and high calorific value,which can be used as clean power coal;and the Permian coal has medium-medium-high volatile matter,medium-strong caking,and medium content vitrinite,which can be used as coking coal blending after coal preparation and ash reduction.In the Ningdong coalfield,it is recommended that the coal clean utilization direction of Hongdunzi mining area includes clean power coal,coking coal blending coal,and dry coal powder fluidized bed gasification coal;the direction of Hengcheng mining area includes clean power coal,coking coal blending coal,and dry coal powder fluidized bed gasification coal;the direction of Weizhou mining area includes clean power coal,coking coal blending coal,dry coal powder fluidized bed gasification coal,and coal-water slurry fluidized bed gasification coal;the direction of Siguquan mining area includes clean power coal and dry coal powder fluidized bed gasification coal.
Ningdong coalfieldPermian coalcoal rock and coal qualityclean utilization
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