β-甲基萘酰化反应AlCl_(3)催化剂后处理技术进展  

Progress in after-treatment technology for AlCl_(3) catalyst of β-methylnaphthalene acylation

作　　者：李军芳 毛学锋 马博文 胡发亭 李文博 LI Junfang;MAO Xuefeng;MA Bowen;HU Fating;LI Wenbo(Beijing Research Institute of Coal Chemistry,China Coal Research Institute Corporation Ltd.,Beijing 100013,China;State Key Laboratory of Coal Mining and Clean Utilization,Beijing 100013,China;National Energy Technology & Equipment Laboratory of Coal Utilization and Emission Control,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司煤化工分院,北京100013 [2]煤炭资源高效开采与洁净利用国家重点实验室,北京100013 [3]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013

出　　处：《煤质技术》2021年第2期48-52,89,共6页Coal Quality Technology

基　　金：煤炭科学技术研究院科技发展基金项目技术创新基金资助项目(2019CX-Ⅱ-01);天地科技股份有限公司科技创新创业资金专项面上资助项目(2020-TD-MS004);天地科技股份有限公司科技创新创业资金专项产学研科技合作资助项目(2019-TD-2-CXY002)。

摘　　要：2,6-萘二甲酸(2,6-NDA)是合成聚酯新材料聚萘二甲酸乙二醇酯(PEN)的重要单体,2,6-NDA结构的高度对称性使得PEN在耐热性、阻气性能和化学稳定性等方面性能优越。以β-甲基萘为原料可通过酰化氧化纯化获得2,6-NDA,该酰化反应过程AlCl_(3)是催化效能最高的1种催化剂,但目前催化剂后处理会产生大量的酸性含铝废水,为了绿色高效的工业化生产,须对酸性含铝废水采取资源化利用。对利用酸性含铝废水的铝源特点合成聚合氯化铝、制备介孔氧化铝、生产固体AlCl_(3)和浓HCl等工艺进行综述,同时介绍了酰化反应AlCl_(3)催化剂的其它后处理方式,即酰化产物不经过水解,直接选用合适的吸附剂与AlCl_(3)络合,可将催化剂AlCl_(3)与反应产物分离,该类后处理方式不产生酸性含铝工业废水,处理方法简单、更加环保。2,6-Naphthalenedicarboxylic acid(2,6-NDA)is the precursor of polyester polyethylene naphthalate(PEN),and the highly symmetric structure of 2,6-NDA endows the polymer with superior performance in heat resistance,gas blocking and chemical stability.2,6-NDA can be obtained from 2-methylnaphthalene by acylation and oxidation.AlCl_(3)is the most effective catalyst in acylation.However,when using AlCl_(3)catalyst,huge acidic aluminium-containing wastewater will be produced after catalyst treatment.In order to obtain green and efficient industrial production,the acidic aluminized wastewater must be recycled.The processes of polyaluminium chloride synthesis,mesoporous alumina preparation,solid AlCl_(3)production,concentrated HCl production from acidic aluminum-containing wastewater were reviewed in this paper,meanwhile,other after-treatment methods of acylation reactions were introduced.The acylated product does not require hydrolysis,AlCl_(3)catalyst can be separated from the reaction product by selecting suitable adsorbent directly,this kind of after-treatment method does not produce acidic aluminum-containing industrial wastewater,the treatment method is simple,and the treatment method is more environmentally friendly.

关 键 词：酰化反应 催化剂 酸性含铝废水 后处理技术 聚合氯化铝 资源化利用 

分 类 号：X703[环境科学与工程—环境工程] TQ110.9[化学工程—无机化工]