This paper introduces the process of COG purification and methanation, and proposes hydrogen-making technology from methanated hydrogen-rich tail gas as well as analyzes it in a comprehensive manner.The liquid organic hydrogen carrier (LOHC) is not classified as hazardous chemicals, which is easy to transport and has a high hydrogen storage capacity.The hydrogen-making technology based on the LOHC is safe, reliable and economically feasible.It makes full use of the existing hydrogen-rich tail gas resources and promotes the comprehensive utilization of coke oven gas.

"> Coke oven gas (COG), Methanation, Hydrogen-rich tail gas, Hydrogen-making, Liquid organic hydrogen carrier (LOHC)