The experimental research on blended coal is conducted in this paper according to coal species with special ash composition and high ash fusing point in coal-water slurry pressured gasification process.

For this,test and analysis have been carried out,the mixed burning method of coals with high and low ash fusing point being adopted,and a series of adjusting measures with clear aim being taken from the aspect of operation.

ash fusing point,ash composition,and the XRD phase.

Employing support vector machine to predict the ash fusion temperature of coal blends;

Combining general regression neural network and genetic algorithm to optimize ash fusion temperature;

Application of general regression neural network in prediction of coal ash fusion temperature;

Determination of ash melting point of refuse derived fuel

According to process requirements of Shell coal gasification process,combined with the characteristics of feed coal of Anqing chemical fertilizer plant,limestone at different ratios was blended into the feed coal,and then the ash melting point was determined.

Directly using calcium series chemical compound as sulphur fixing agent in C W M combustion will result in further lowering the ash melting point of C W M and sometime, greatly increasing the viscosity of C W M and therefore, the stability of the C W M becom.

For developing the Shenhua coal industrial utilization field,the key point is that to enhance CWM concentration and ash fusion point.

The result indicates that the high ash fusion point of Huainan coal can be reduced by the method of coal blending.

The addition of fusing agent and coal blending were studied to reduce the ash fusion point of Huainan coal.