Resource-efficient conversion of petrochemical waste into feedstock for the production of tetracene and its homologues
Abstract
In the context of growing demand for innovative approaches to industrial waste management in the oil and gas sector, a strategy for converting tarry pyrolysis by-products into valuable chemical components is proposed. The study focuses on the utilization of tar-like materials generated at the Ustyurt Gas-to-Chemicals Complex in the Republic of Karakalpakstan (Uz-Kor Gas Chemical JV LLC). A sequential process involving fractionated vacuum distillation has been developed to isolate tetracene – a polycyclic aromatic hydrocarbon (PAH) – and its homologues (methyl- and ethyltetracenes). The method provides a yield of the target fraction of up to 7.2% wt. relative to the initial feedstock, while minimizing environmental risks and enhancing resource efficiency. The obtained results confirm the potential of secondary raw materials for the subsequent synthesis of ampholytic sorbents used in the treatment of aqueous media, thereby contributing to the sustainable development of the region.
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