| 1 | Capture efficiency of coal/biomass co-combustion ash in an electrostatic field显示文摘Ash samples from corn stalk and coal co-fired at 0%,5%,10%,15%,20%,and 100%biomass were collected by a 4-stage wire-pipe type electrostatic precipitator (ESP),and the ratio of 14C/12C in ash samples from the 0%,20%,and 100% co-firing scenarios were measured by an accelerator mass spectrometer.The differential capture efficiency in electrostatic fields for coal ash,coal/biomass co-combustion ash (co- ash),and pure biomass ash was studied separately based on the ratio 14C/12C.Other factors that may influence capture efficiency were analyzed,including microscopic morphology,resistivity,dust density, and particle size distribution.The results indicate that co-ash may be efficiently captured by ESP,while pure biomass ash could not.Co-ash capture was mainly concentrated in the first two electrostatic fields in the lab-scale ESP,and the overall capture efficiency exceeded 90%.Biomass addition decreased the resistivity of co-ash,and enhanced its surface adsorption capacity to form agglomerates,facilitating the capture of co-ash.The capture efficiency of coal ash in co-ash was higher than that of pure coal ash in the first electrostatic field of the ESP.Co-firing biomass can aid the removal of both coal ash and biomass ash when using an ESP. | Jianyi Lu Lili Fu Ximei Li Eric Eddings | 2018 | Particuology2018，16，5： | 2 |
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