EXPERIMENTAL RESEARCH ON THE INFLUENCE OF THE SHAPE OF MATERIAL TO RESIDENCE TIME IN A RECOVERY DEVICE OF CARBON FIBER COMPOSITES

Abstract

Abstract: Fluidization curve of reactor and the influence of the shape of material to residence time have been studied with EPE foam as a tracer material on the basis of establishing experiment device of recycling carbon fibre using the oxygen pyrolysis method in order to ensure that recycled carbon fibre can be moved. The minimum fluidization velocity and carryover rate have been determined through calculating with formulas and analyzing fluidization curve from experiment. The experimental results show that the critical fluidization velocity and carry-over velocity of solids are 0.15m/s and 0.24m/s, respectively. The shape of material affects its residence time in fluidized bed. The residence time order from long to short of single shape materials is the cylinder, rectangle and sphere in turn in the fluidized bed; mixture residence time order from long to short is sphere and cylinder, sphere and rectangle, rectangle and cylinder mixture. Mixture of rectangle and cylinder or single sphere as pyrolysis material should be used to thermal test in order to discharge recycled carbon fiber as soon as possible.

Key words: carbon fibre, recovery device, residence time, shape of material, fluidization curve

CLC Number:

TB332

SONG Jin-mei, LIU Jian-ye, ZHANG Cui-miao, PENG Yu-gang. EXPERIMENTAL RESEARCH ON THE INFLUENCE OF THE SHAPE OF MATERIAL TO RESIDENCE TIME IN A RECOVERY DEVICE OF CARBON FIBER COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(1): 59-63.

References

[1] Nahil M A, Williams P T. Recycling of Carbon Fibre Reinforced Polymeric Waste for the Production of Activated Carbon Fibres[J]. Journal of Analytical and Applied Pyrolysis, 2011, 91: 67-75.
[2] 徐佳, 孙超明. 树脂基复合材料废弃物的回收利用技术[J]. 玻璃钢/复合材料, 2009, (4): 100-103.
[3] 刘洁, 刘丽芳, 俞建勇. 碳纤维复合材料废弃物的回收利用形势[J]. 产业用纺织品, 2011, 249: 26-28.
[4] 段志军, 段望春, 张瑞庆. 国内外复合材料回收再利用现状[J].塑料工业, 2011, 39(1): 14-18.
[5] Heil J P. Study and analysis of carbon fiber recycling[D]. Raleigh: North Carolina state University, 2011.
[6] Pimenta S, Pinho S T.Recycling carbon fibre reinforced polymers for structural applications: technology review and market outlook[J]. Waste management, 2011, 31(2):378-392.
[7] Mcconnell V P. Launching the carbon fibre recycling industry[J]. Reinforced plastics, 2010, 54(2): 33-37.
[8] http://www.cas.cn/ky/kyjz/201111/t20111128_3402725.shtml
[9] Raul P, Dodds C, Hyde J. Chemical recycling of carbon fibre reinforced composites in near critical and supercritical water[J]. Composites: Part A, 2008, 39: 454-461.
[10] 田丽娜. 纤维增强聚合物基复合材料的回收与再利用[J]. 应用科学, 2009, (3): 107-108.
[11] Jiang G, Wong K H, Pickering S J. Study of a fluidised bed process for recycling carbon fibre from polymer composite[C]. Proceedings of 7th World Congress for Chemical Engineering, Glasgow, UK, 2005.
[12] Jiang G, Pickering S J, Walker G S. Rudd Surface characterisation of carbon fibre recycled using fluidised bed[J]. Applied Surface Science, 2008, 254: 2588-2593.
[13] Jiang G, Pickering S J. Recycling carbon fibre/epoxy resin compo-sites using supercritical 1-propanol[C]. 16th International Conference on Composite Materials, Kyoto, Japan, 2007.
[14] 韦朝海, 焦向东, 陈焕钦. 生物好氧流化床废水处理技术研究进展[J]. 环境科学与技术, 1998,(4): 5-9.
[15] 苏学泳. 流态化条件下生物质热解气化过程的实验与模型研究[D]. 北京:清华大学热能工程系, 1998.
[16] 苏学泳, 王智微, 程从明, 唐松涛, 吕子安, 李定凯. 生物质在流化床中的热解和气化研究[J]. 燃料化学学报, 2005,33(2): 199-204.
[17] 胡照会, 宋金梅, 刘建叶, 彭玉刚. 一种利用流化床回收热固性复合材料的装置及其方法[P]. CN103045277B.
[18] 郭慕孙,李洪钟. 流态化手册[M]. 北京: 化学工业出版社, 2007, 119-172.
[19] 唐春婕. 非均匀布风内循环流化床冷模试验研究[D]. 上海交通大学, 2003.
[20] 尹斌, 章明川, 唐春捷, 吴江, 林天明, 宋玉宝. 大块物在内循环流化床中停留时间的试验研究[J]. 电站系统工程, 2003,19(1):41-43.
[21] 岑可法, 樊建人. 工程气固多相流动的理论与计算[M]. 杭州: 浙江大学出版社, 1990. 303-366.