浅析废剥离液再生工艺存在的问题

Analysis of problems of waste stripper recovery

随着近几年国内面板行业的快速崛起,剥离液的使用量与对应的废剥离液的产生量连年增加。采用精馏工艺对废剥离液进行再生,也逐渐取代焚烧工艺成为剥离液再生领域的主流技术。剥离液的再生与循环利用,一方面实现了固废的资源再生,另一方面节约了面板制造的成本,在环境保护与循环经济发展两个层面均有着重大意义。结合公司剥离液再生装置运行情况,从上游剥离液的使用、组成、废剥离液的产生及其特点4个方面进行了分析,重点对采用精馏工艺再生剥离液的工艺技术及装置运行过程中存在的气味扰民、管道堵塞、废水处理难、回收液色度高、设备腐蚀5个方面的问题进行了总结和分析。

With the rapid development of domestic panel industry in recent years,the amount of stripping liquid and the amount of waste stripping liquid increase year by year.It has become the mainstream technology in the field of stripping liquid regeneration to recycle the waste stripping liquid by rectification process.The regeneration and recycling of stripping liquid can not only realize the regeneration of solid waste resources,but also save the cost of panel manufacture,which is of great significance in environmental protection and circular economy development.This paper analyzed the usage,composition,waste stripping liquid and characteristics of stripping liquid from the operation of stripping liquid regeneration unit.In this paper,the author summarized and analyzed the technology of using rectification process to regenerate stripping liquid and the problems existing in the operation of the unit,such as odor disturbing people,pipeline blockage,difficulty in wastewater treatment,high color of the recovered liquid and equipment corrosion.