神府兰炭粉改性制浆的实验研究  

Preparation and mechanism of Shenfu semi-coke modification for the water semi-coke slurry

作　　者：王思同 杨志远[1] 赵敏捷[1] 李智华[1] 

机构地区：[1]西安科技大学化学与化工学院,陕西西安710054

出　　处：《西安科技大学学报》2016年第5期680-684,共5页Journal of Xi’an University of Science and Technology

基　　金：国家科技重大专项资助项目(2011ZX05037-003);陕西省科技攻关项目资助项目(2010K07-20)

摘　　要：中国兰炭资源丰富,但工业生产中所产生兰炭粉粒度较小,通常被低价卖掉或随意堆弃,既浪费资源又污染环境。文中以神府兰炭粉为原料,选用市售分散剂腐植酸钠、木质素磺酸钠、萘磺酸甲醛缩聚物制备水焦浆,其中腐殖酸钠效果最好,用量为0.2%时最高成浆浓度可达61.0%;进一步研究了微波辐射、臭氧氧化及偶联剂包覆对兰炭粉的改性效果,发现最佳改性条件为:微波辐射425 W,50 s,臭氧处理90 min,KH550型偶联剂最佳用量为1.5%;当成浆浓度为55%时,改性前粘度为632 MPa·s,改性后分别降到560,499,584 MPa·s.采用微波与分散剂联合处理,其最高成浆浓度可达62.0%.结构测试及红外分析表明改性后的兰炭粉的孔结构及表面含氧官能团有所改变,均有利于改善兰炭粉的成浆性能。Semi-coke was considered as an abundant resource in China. Because of the small powder particle size during the industrial production,semi-coke was usually sold at a low price or abandoned,which was a waste of resources and harmful to the environment. In this paper,semi-coke was regarded as raw material. Three commercially available dispersants（Na HA,SLS and NSF） were chosen to prepare the water semi-coke slurry. The best one was Na HA that the highest slurry concentration could be reached to61. 0% with dosage of 0. 2%. The modification effects of semi-coke,such as microwave irradiation,ozone oxidation and coupling reagent coating were studied emphatically. The results showed the optimum conditions were as follows： the microwave pretreatment power and time were 425 W and 50 s,respectively,the ozone pretreatment time was 90 min,and the dosage of KH550 reagent was 1. 5%. When the water semi-coke slurry concentration was 55%,the viscosity could be decreased from 632 MPa·s to 560,499,584 MPa · s after modification,respectively. Combined microwave irradiation with dispersant,the highest slurry concentration could be reached to 64. 0%. By analysis of pore structure test and FTIR,the pore structure and surface oxygenic functional groups of semi-coke had been changed through modification methods,which were benefit to improve the property of water semi-coke slurry.

关 键 词：兰炭粉 微波改性 偶联剂 水焦浆 

分 类 号：TQ536[化学工程—煤化学工程]