Ca、Fe系添加剂对废线路板热解油脱溴改质效果的影响  

Effect of Ca and Fe additives on debromination and lightweight of waste oil from waste circuit board

作　　者：杨帆 叶子玮 孙水裕 林伟雄[1,2,3,4] 黄静菊 吴凌宇 YANG Fan;YE Ziwei;SUN Shuiyu;LIN Weixiong;HUANG Jingju;WU Lingyu(Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216;School of Environmental Science and Engineering,Guangdong University of Technology, Guangzhou 510006;Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Foshan 528216;Key Laboratory of Mining and Metallurgy Industry Heavy Metals Pollution Prevention and Vocational Education of Environmental Protection of Guangdong Province, Foshan 528216;Foshan Engineering and Technology Research Center of Heavy Metal Pollution Prevention and Resources Comprehensive Utilization, Foshan 528216)

机构地区：[1]广东环境保护工程职业学院,佛山528216 [2]广东省固体废弃物资源化与重金属污染控制工程技术研究中心,佛山528216 [3]广东省环境保护矿冶行业重金属污染防治与职业教育重点实验室,佛山528216 [4]佛山市重金属污染防治与资源综合利用工程技术研究中心,佛山528216 [5]广东工业大学环境科学与工程学院,广州510006

出　　处：《环境科学学报》2018年第6期2468-2474,共7页Acta Scientiae Circumstantiae

基　　金：广东省科技计划项目(No.2014B020216009);广东省环保专项资金项目(废线路板与废旧锂电池高值化资源利用;2016);佛山市科技创新项目(No.2016AG100482);广东环境保护工程职业学院人才基金项目(No.K640416101709);广东省自然科学基金(No.2017A030313266);广东普通高校创新团队(No.2017GKCXTD004);佛山市自筹经费类科技计划项目(No.2017AB004132);广东省普通高校特色创新项目(No.2017GKTSCX041)~~

摘　　要：为了达到废印刷电路板(WPCB)热解油的脱溴和轻质化的目的,在废印刷电路板非金属粉末(WPCBNP)的热解中应用不同的添加剂(脱溴剂、脱溴剂+催化剂).首先,研究了WPCBNP的热解三相产物产率.其次,测定了热解液体产物中有机溴和无机溴的含量.最后,分析了热解油中碳原子的组成分布和组分含量.试验结果表明,使用Fe_3O_4+4A分子筛时,热解油回收率可达12.23%.热解液相产物中的无机溴含量从283.04 mg·g^(-1)减少到10.19 mg·g^(-1)(Fe_3O_4+Al_2O_3),去除率为90.47%,有机溴含量从151.13 mg·g^(-1)减少到11.07 mg·g^(-1)(Fe_3O_4+Al_2O_3),去除率分别为90.47%和92.68%.应用Fe_3O_4+Al_2O_3可将C6~C9组分(或汽油组分)含量从61.07%提高到76.75%,C10~C14组分(或柴油组分)含量从10.66%提高到13.95%,而≥C15(或重油组分)含量从28.27%降低至9.30%.通过分析热解油成分,可知油中主要含溴有机物是2-bromoPhenol和2,4-dibromo-Phenol.应用不同添加剂/组合添加剂,2-bromo-Phenol含量可降至1.22%,而2,4-dibromo-Phenol未被检出.结果表明,Fe_3O_4+Al_2O_3在WPCBNP热解油的脱溴和轻质化方面效果最好,对WPCB资源化利用具有显著的效益.In order to achieve the debromination and lightweight of waste printed circuit board（ WPCB） pyrolytic oil,different additives（ debromination agent,debromination agent＋catalyst） were applied in the pyrolysis of waste printed circuit board nonmetallic powders（ WPCBNP）. Firstly,the yield of pyrolytic three-phase product from WPCBNP were investigated. Secondly,the content of organic bromine and inorganic bromine among the pyrolytic liquid product were measured. Lastly,the composition and the number distribution of carbon atoms of pyrolysis oil were analyzed. The experimental results showed that the recovery rate of pyrolysis oil could reach 12.23%,when Fe3O4＋4 A was used. The removal rate of inorganic bromine in the pyrolytic liquid phase reduced from 283.04 mg·g（-1） to 10.19 mg·g（-1）（ Fe3O4＋Al2 O3）,and the content of organic bromine decreased from 151.13 mg·g（-1） to 11.07 mg·g（-1）（ Fe3O4＋Al2 O3）,reaching the removal rate of 90.47% and 92.68%,respectively. By Fe3O4＋ Al2 O3,the content of C6 - C9（ or diesel component）increased from 61.07% to 76.75%,and the content of C10 - C14（ or diesel component） increased from 10.66% to 13.95%,while the content of ≥C15（ or heavy oil components） content reduced from 28.27% to 9.30%. Through the analysis of pyrolysis oil,analysis indicated the main bromine organic compounds were 2-bromo-Phenol and 2,4-dibromo-Phenol. Using different additives,2-bromo-Phenol content could be reduced to 1. 22% and 2,4-dibromo-Phenol had not been detected. The results indicated that the Fe3O4＋ Al2 O3 do best in the debromination and lightweight of WPCBNP pyrolysis oil,which has significant benefits in resource recycling of WPCB.

关 键 词：废弃印刷线路板(WPCBs) 两段式热解装置 真空热解 脱溴改质 碳数分布 

分 类 号：X705[环境科学与工程—环境工程]