Flow properties of coal and biomass on recurrence plot method

Abstract

The recurrence plot and recurrence quantification analysis were applied to analyze the pressure fluctuation signals of mixed flow of coal and solid biomass and extract the determinism, laminarity, averaged diagonal line length, and entropy. The minimum fluidization velocity of the coal is 1.87 m/s. With the increase of biomass ratio, the minimum fluidization velocity is almost constant. When coal particles flow alone, the increased gas velocities enhance the chaotic characteristics. The existence of biomass improved the reliability of the system, which tends to be gentle and reduced the determinism, entropy, and the average of diagonal length in system.