Synthesis and performance of environmental coal dust suppressant based on bio-oil
Wood chip pyrolysis oil was used as raw material,and the pretreated bio-oil was polymerized with acrylic acid(AA)and chitosan(CTS)in the presence of ammonium persulfate(APS).A new bio-oil-based environmentally friendly coal dust inhibitor(Hbio-CTS)was prepared.The results show that at 70℃,CTS and AA mass is 0.65 g and 3.00 g,when APS/CTS is 5％,the maximum viscosity of Hbio-CTS synthesized under optimized conditions is 5.4 mPa·s.Both the FTIR and TG properties of Hbio-CTS confirmed that AA and CTS had been successfully grafted on the structure of bio-oil components.The solidified layer formed by Hbio-CTS on pulverized coal is very little affected by wind and rain.Among them,at 17 m/s(classⅦ),the maximum mass loss of pulverized coal was 6.99％.After 8 cycles(56 d),the degradation rate of Hbio-CTS was 57％.
万方数据
维普
