改性葵花籽皮作型煤黏结剂及机理研究
|
摘要
以不同粒级的神木煤为原料,NaOH改性葵花籽皮为黏结剂,利用干法冷压技术制备型煤。通过SEM、BET及热重分析等技术手段对改性葵花籽皮和型煤进行表征。结果表明:5.0%NaOH对葵花籽皮降解作用最强,细纤维化现象凸显,其孔径以微孔和介孔为主,氮吸附法测得平均孔径为16.84 nm。NaOH质量分数为5.0%,神木煤粒度为3～1.5 mm时所得型煤性能强度最佳,抗压强度为3 600 N,跌落强度为76%,达到工业用型煤的标准。型煤热解主要集中在第2阶段(350～650℃),在461℃呈现出最大失重峰和放热峰,失重速率约0.15%/℃。
Using different size fraction of Shenmu coal as raw materials and NaOH modified sunflower seed skin as binder, the briquette was prepared by dry cold pressure technology. The characterization and property of the modified sunflower seed skin and briquette are carried out by means of SEM, BET and thermogravimetric analysis. The result shows that the concentration of 5.0% NaOH has the strongest degradation effect on sunflower seed skin. It is mainly reflected that the fine fibrosis phenomenon is prominent and its pore is mainly microporous and mesoporous with an average pore size of 16.84 nm. When the NaOH concentration is 5.0% and the particle size of Shenmu coal is 3-1.5 mm, the briquette performance strength is the best, the compressive strength is 3600 N, and the falling strength is 76%, reaching the standard of industrial briquette. The pyrolysis of briquette is mainly concentrated in the second stage(350-650 ℃). The maximum weight loss peak and exothermic peak appear at 461 ℃. The weight loss rate is about 0.15%/℃.
Using different size fraction of Shenmu coal as raw materials and NaOH modified sunflower seed skin as binder, the briquette was prepared by dry cold pressure technology. The characterization and property of the modified sunflower seed skin and briquette are carried out by means of SEM, BET and thermogravimetric analysis. The result shows that the concentration of 5.0% NaOH has the strongest degradation effect on sunflower seed skin. It is mainly reflected that the fine fibrosis phenomenon is prominent and its pore is mainly microporous and mesoporous with an average pore size of 16.84 nm. When the NaOH concentration is 5.0% and the particle size of Shenmu coal is 3-1.5 mm, the briquette performance strength is the best, the compressive strength is 3600 N, and the falling strength is 76%, reaching the standard of industrial briquette. The pyrolysis of briquette is mainly concentrated in the second stage(350-650 ℃). The maximum weight loss peak and exothermic peak appear at 461 ℃. The weight loss rate is about 0.15%/℃.
引文
[1]许建,雷婷.资源税改革对陕西省煤炭行业的影响[J].煤炭经济研究,2017,37(8):29-32.
[2]孙鹏飞,李京仙,杨榕.低变质粉煤成型热解的研究[J].广州化工,2015,43(14):91-93.
[3]陈娟,刘皓,张智芳,等.神木低变质粉煤加入量对型煤型焦性能的影响[J].当代化工,2018,47(1):13-16.
[4]李珊珊.低阶粉煤热解工艺技术的选择[J].山东化工,2018,47(3):75-77.
[5]张秦龙,杨佳.发展中的榆林市兰炭产业[J].产业与科技论坛,2013,12(8):61-62.
[6]NALLADURAI K,VANCE M.Natural binders and solid bridge type binding mechanisms in briquettes and pellets made from corn stover and switchgrass[J].Bioresource Technol,2010,101(3):1082-1090.
[7]陈娟,刘皓,李健,等.低变质粉煤的玉米秸秆型煤粘结剂的研究[J].中国煤炭,2017,43(4):105-108.
[8]NDINDENG S A,MBASSI J E,MBACHAM W F,et al.Quality optimization in briquettes made from rice milling by-products[J].Energy Sustainable Development,2015,29:24-31.
[9]OYELARAN O A,TUDUNWADA Y Y.Determination of the Bioenergy Potential of Melon Shell and Corn Cob Briquette[J].Iranica Journal of Energy and Environment,2015,6(3):167-172.
[10]VERMA P K,KUMAR J,KUMAR P,et al.Study of Biomass Production for Energy in Forming Prospective[J].International Journal of Engineering Science and Computing,2017,7(5):12347-12351.
[11]MASSARO M M,SON S F,GROVEN L J.Mechanical,pyrolysis,and combustion characterization of briquetted coal fines with municipal solid waste plastic(MSW)binders[J],Fuel,2014,115(1):62-69.
[12]刘清,师建芳,赵威,等.向日葵副产物资源的综合利用[J].农业工程学报,2011(22):336-340.
[13]朱洪梅,于燕,孟娜.葵花子皮中水溶性膳食纤维初步研究[J].中国农学通报,2013,209-214.
[14]薛桂荣.葵花籽壳对溶液中铀酰离子的吸附性能研究[D].南昌:东华理工大学,2015.
[15]李庆文等.向日葵及其栽培[M].北京:农业出版社,1991:35-42.
[16]KRUK M,JARONIEC M.Gas Adsorption Characterization of Ordered Organic-Inorganic Nanocomposite Materials[J].Chem Mater,2001(13):3169-3183.
[17]CHANG B,GUO Y,LI Y,YANG B.Hierarchical Porous Carbon Derived from Recycled Waste Electrodes[J].RSC Advances,2015,5(88):72019-72027.
[18]潘兰英.煤泥和农作物秸秆加工生物质型煤的试验研究[J].中国煤炭,2009,35(1):61-63.
[19]ZHANG X L,XU D P,XU Z H,et al.The effect of different treatment conditions on biomass binder preparation for lignite briquette[J].Fuel Processing Technology,2001,73(3):185.
[20]刘皓,邓保炜,白晓惠,等.Na OH改性沙蒿作粘结剂对型煤和兰炭强度的影响[J].材料导报,2016,30(27):420-423.
[21]刘佳.生物质复合型煤粘结剂的制备与应用研究[D].兰州:兰州大学,2015.
[2]孙鹏飞,李京仙,杨榕.低变质粉煤成型热解的研究[J].广州化工,2015,43(14):91-93.
[3]陈娟,刘皓,张智芳,等.神木低变质粉煤加入量对型煤型焦性能的影响[J].当代化工,2018,47(1):13-16.
[4]李珊珊.低阶粉煤热解工艺技术的选择[J].山东化工,2018,47(3):75-77.
[5]张秦龙,杨佳.发展中的榆林市兰炭产业[J].产业与科技论坛,2013,12(8):61-62.
[6]NALLADURAI K,VANCE M.Natural binders and solid bridge type binding mechanisms in briquettes and pellets made from corn stover and switchgrass[J].Bioresource Technol,2010,101(3):1082-1090.
[7]陈娟,刘皓,李健,等.低变质粉煤的玉米秸秆型煤粘结剂的研究[J].中国煤炭,2017,43(4):105-108.
[8]NDINDENG S A,MBASSI J E,MBACHAM W F,et al.Quality optimization in briquettes made from rice milling by-products[J].Energy Sustainable Development,2015,29:24-31.
[9]OYELARAN O A,TUDUNWADA Y Y.Determination of the Bioenergy Potential of Melon Shell and Corn Cob Briquette[J].Iranica Journal of Energy and Environment,2015,6(3):167-172.
[10]VERMA P K,KUMAR J,KUMAR P,et al.Study of Biomass Production for Energy in Forming Prospective[J].International Journal of Engineering Science and Computing,2017,7(5):12347-12351.
[11]MASSARO M M,SON S F,GROVEN L J.Mechanical,pyrolysis,and combustion characterization of briquetted coal fines with municipal solid waste plastic(MSW)binders[J],Fuel,2014,115(1):62-69.
[12]刘清,师建芳,赵威,等.向日葵副产物资源的综合利用[J].农业工程学报,2011(22):336-340.
[13]朱洪梅,于燕,孟娜.葵花子皮中水溶性膳食纤维初步研究[J].中国农学通报,2013,209-214.
[14]薛桂荣.葵花籽壳对溶液中铀酰离子的吸附性能研究[D].南昌:东华理工大学,2015.
[15]李庆文等.向日葵及其栽培[M].北京:农业出版社,1991:35-42.
[16]KRUK M,JARONIEC M.Gas Adsorption Characterization of Ordered Organic-Inorganic Nanocomposite Materials[J].Chem Mater,2001(13):3169-3183.
[17]CHANG B,GUO Y,LI Y,YANG B.Hierarchical Porous Carbon Derived from Recycled Waste Electrodes[J].RSC Advances,2015,5(88):72019-72027.
[18]潘兰英.煤泥和农作物秸秆加工生物质型煤的试验研究[J].中国煤炭,2009,35(1):61-63.
[19]ZHANG X L,XU D P,XU Z H,et al.The effect of different treatment conditions on biomass binder preparation for lignite briquette[J].Fuel Processing Technology,2001,73(3):185.
[20]刘皓,邓保炜,白晓惠,等.Na OH改性沙蒿作粘结剂对型煤和兰炭强度的影响[J].材料导报,2016,30(27):420-423.
[21]刘佳.生物质复合型煤粘结剂的制备与应用研究[D].兰州:兰州大学,2015.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |