Method for electrocatalytic synergistic treatment of industrial sulfur-containing flue gas and conversion of PET waste plastics into hydroxymethanesulfonate

Abstract

The present invention relates to a method for electrocatalytically and synergistically treating industrial sulfur-containing flue gas and converting PET waste plastics into hydroxymethanesulfonate. The method includes: passing industrial sulfur-containing flue gas into an alkaline solution to obtain treatment solution, where the sulfur-containing flue gas contains sulfur-containing oxides; hydrolyzing waste PET plastics in an alkaline solution to obtain PET hydrolysate containing ethylene glycol; mixing the treatment solution and the PET hydrolysate to prepare an electrolyte, and through an electrolytic reaction, converting ethylene glycol in the PET hydrolysate and sulfur-containing oxides into hydroxymethanesulfonate. The present invention synergistically integrates the treatment of industrial sulfur-containing flue gas with the recycling of waste PET plastics, converting them into the high-value chemical, hydroxymethanesulfonate. This strategy not only enhances the recycling value of waste PET but also utilizes the by-products from the flue gas desulfurization process, enhances overall process efficiency and economic viability.

Dependencies are inferred from the claim text.