4.6 Article

Co-production of Naphthenic Oil and Phenolic Compounds from Medium- and Low-Temperature Coal Tar

期刊

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 60, 期 16, 页码 5890-5902

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.1c00390

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资金

  1. National Key Research and Development Program of China [2016YFB0600305]
  2. National Natural Science Foundation of China [22038008]

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The efficient transformation of medium- and low-temperature coal tar into high-performance fuel and value-added chemicals has been achieved through an innovative coal tar processing process. A matrix of model compounds was used to represent the coal tar and hydrogenation products in order to optimize process parameters through kinetics modeling. The energy efficiency and element utilization associated with the entire process were calculated, and the energy use, CO2 emission, and target costing of the proposed coal tar process were evaluated through life cycle assessment.
The conversion of medium- and low-temperature coal tar into high-performance fuel and value-added chemicals is one of the main approaches to addressing the current global energy challenges. To this aim, an innovative coal tar processing process has been developed, which enables the efficient transformation. This process is suggested to produce phenolic compounds and naphthenic oil. As the hydrogenation of coal tar involves complex chemical structures and reactions, a systematic matrix of model compounds was presented on the basis of qualitative and quantitative analytics to represent the coal tar and hydrogenation products. The kinetics modeling of tar hydrogenation was proposed to optimize the process parameters and predict the characteristics of products. The energy efficiency (81.62%) and the element utilization (carbon (88.21%), hydrogen (87.13%), and oxygen (31.25%)) associated with the whole process are calculated. From the life cycle assessment, the energy use, the CO2 emission, and the target costing of the proposed coal tar process are calculated as 10.82 MJ/CNY, 2.71 kg CO2-eq/CNY, and 3141.2 CNY/t-product, respectively.

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