China Coal Technology & Engineering Clean Energy Corporation Ltd.

基于煤焦油深加工生产高附加值化学品成为当前煤化工企业实现升级转型的重要路径之一,以煤焦油为原料制取α/β-甲基萘、喹啉、吲哚、苊、氧芴、芴等化学品并已将其广泛应用于光刻胶、封装材料、电子发光材料等领域,采用煤焦油深加工技术提取高值化学品目前成为先进能源与电子材料行业亟需开发的关键技术之一,有必要对目前我国煤焦油深加工技术研发与应用现状进行归纳总结,以期为煤焦油深加工技术的发展和相关技术落地提供支撑。综述煤焦油提取高附加值化学品的现状,梳理煤基高值化学品市场应用情况和相关研究进展,总结制取煤基高值化学品的关键技术路线,通过分析煤焦油深加工技术及市场现状提出煤焦油洗油馏分制取研究的重要性和必要性,并提炼煤焦油洗油馏分制取高值化学品的研究意义和发展前景。综述研究表明:煤焦油深加工提取高值化学品是目前煤焦油加工利用的重要途径,而目前我国煤焦油深加工技术积累薄弱,无核心专利产品,分离精制设备低端,难以生产高附加值化学品,主要以技术含量较低的中间体和单体粗品为主,产品作为高端产品的工业原料出口至国外厂商进行下游深加工;开发煤焦油洗油馏分制取电子级化学品并将其作为光刻胶、LED/OLED显示器发光材料、密封胶固化剂、柔性显示器基底材料等衍生物中间体的原料,可突破我国在煤基电子级化学品方面的核心难题;开展洗油馏分深加工制取高附加值化学品研究是提高煤焦油附加值的重要技术路线之一,可满足在煤焦油洗油馏分中提取的芴、β-甲基萘等产品的市场需求;以国内现有的洗油深加工技术为基础进行创新升级,开展洗油馏分制取高附加值化学品技术的研究开发,可得到低成本、低能耗、高附加值的煤基电子级化学品并实现产业化、规模化,具有广阔的发展前景。

Based on the deep processing of coal tar to produce high⁃value⁃added chemicals,it has become an impor⁃tant path for coal chemical enterprises to achieve upgrading and transformation. Utilizing coal tar as a rawmaterial,chemicals such as α / β⁃methylnaphthalene,quinoline,indole,acenaphthene,dibenzofuran,and fluorene havebeen synthesized and widely applied in fields including photoresists,encapsulation materials,and electronic lumines⁃cent materials.The deep processing of coal tar to extract high⁃value chemicals has become a key technology urgent⁃ly needed to be developed in the advanced energy and electronic materials industries. It is necessary tosummarize the current research and application status of coal tar deep processing technology in China to provide sup⁃port for the development and practical implementation of coal tar deep processing technology.This review provides anoverview of the current state of extracting high⁃value⁃added chemicals from coal tar,outlines the market applicationsof coal⁃based high⁃value chemicals and related research progress, summarizes key technological routes forproducing coal⁃based high⁃value chemicals.By analyzing the current status of coal tar deep processing technology andits market,the importance and necessity of researching the extraction of coal tar wash oil fractions for producing high⁃value chemicals are proposed.The research significance and development prospects of extracting high⁃value chemicalsfrom coal tar wash oil fractions are refined.Research indicates that the deep processing of coal tar to extract high⁃val⁃ue chemicals is a crucial avenue for the utilization of coal tar.However,the current state of deep processing technologyfor coal tar in China is characterized by weak technological accumulation,lack of core patented products,low⁃gradeseparation and refining equipment,which hinder the production of high⁃value⁃added chemicals.The focus primarily re⁃mains on low⁃value intermediate and crude monomer products,serving as raw materials for downstream deep processingby foreign manufacturers as industrial raw materials for high⁃end products.Developing coal tar wash oil fraction to pro⁃duce electronic⁃grade chemicals,and then subsequently utilized as raw materials for derivatives like photoresists,LED/OLED display luminescent materials,sealant curing agents,and flexible display substrate materials,have the poten⁃tial to address the core challenges in China’s coal⁃based electronic⁃grade chemical sector.Initiating research on produ⁃cing high⁃value⁃added chemicals from wash oil fractions through deep processing is a pivotal technological avenue toenhance the value of coal tar.It can cater to the market demand for products such as fluorene and β⁃methylnaphtha⁃lene derived from coal tar wash oil fractions.By building upon existing domestic wash oil deep processing techniquesand conducting innovative upgrades,research and development of technology for producing high⁃value⁃added chemicalsfrom wash oil fractions can yield low⁃cost,low⁃energy consumption,and high⁃value coal⁃based electronic⁃grade chemi⁃cals,and the industrialization and scaling can be realized,substantial growth prospects can be offered.

中国煤炭科工集团有限公司科技创新创业资金专项重点资助项目(2022-ZD001)

常秋连, 何国锋, 陈明波, 等. 煤焦油深加工技术分离提取高值化学品研究进展 [J]. 煤质技术, 2023,38 (4): 10-20.

CHANG Qiulian, HE Guofeng, CHEN Mingbo, et al. Research progress in extraction chemicals from coal tarby high⁃value utilization technology [J]. Coal Quality Technology, 2023, 38 (4): 10-20.