Metallurgical gas,produced in the metallurgical industry,if mishandled,can lead to serious carbon emissions and air pollution,posing significant challenges for carbon neutrality in the steel industry.Metallurgical gas,especially coke oven gas,serves not only as a fuel but also holds significant chemical resources in its carbon and hydrogen elements.Utilizing co-production processes to manufac-ture chemicals in the steel industry offers promising solutions to environmental and energy issues such as greenhouse gas emissions,re-source wastage,energy consumption,and air pollution.In the catalytic carbon sequestration process,the catalytic production of methane and low-carbon alcohols using coke oven gas has attracted considerable attention due to its advantages in process efficiency and operational feasibility.Firstly,the process conditions and reaction mechanisms for catalytic methane and methanol production from coke oven gas were introduced,along with discussions on the influence of factors such as additives and carriers on the catalyst's resistance to coking and sta-bility.Secondly,the importance of constructing dual active centers with high activity and stability in the design of catalysts for the produc-tion of other low-carbon alcohols from coke oven gas was emphasized,elucidating the impact mechanisms of precursor structure and addi-tives on the modified Fischer-Tropsch synthesis catalysts and modified methanol catalysts.Regarding reaction conditions,methane conver-sion requires higher temperatures,while methanol production requires higher pressures.In terms of process complexity,methane con ver-sion is the simplest,whereas formic acid production is the most complex.In terms of hydrogen consumption,formic acid production does not require hydrogen consumption,while methane conversion consumes the most hydrogen.Carbon sequestration co-production should be carried out adaptively,considering various practical factors and product economic benefits,to continuously promote catalytic carbon re-duction,driving innovation in carbon sequestration co-production technology and the development of clean energy technologies.
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