Highly Efficient Coke Dust Suppressant with Anti-Freezing Capabilities

To resolve the wind-blowing emissions of stockpiled coke, we present the highly efficient coke dust suppressant with anti-freezing capabilities comprising polyethyleneimine (PEI), starch, and glycerol. Detailed investigations show that the PEI could electrostatically interact with coke, increasing the wettability and thereby promoting aggregation. Moreover, it hydrogen bonds with starch to form a stable film and enhances the water-retention capability. Furthermore, the addition of glycerol prevents the coke loss caused by freezing during transportation and energy loss associated with dismantling the frozen coke. Wind erosion tests and bomb calorimeter results reveal that the coke dust suppressant presented exhibits superior wind resistance and does not interfere with the coke combustion. These documents describe the experimental data from that study.