A technical and economic assessment of utilizing the coke oven, blast furnace and basic oxygen gas to produce hydrogen and liquid fuels was conducted. Available technologies were reviewed and two conceptual designs were developed to produce either hydrogen or liquid fuels from these gases. Heat and mass balances for the conceptual designs were developed and capital and operating cost were estimated. Results of the analysis indicated that the preferred option to produce hydrogen from steel mill off-gas is by using the pressure swing adsorption technology with coke oven gas without reforming or shifting. The preferred option to produce liquid fuels is by using a modified Fischer-Tropsch technology with the blast furnace gas. However, economic analysis shows that recovery of hydrogen is more attractive than making liquid fuels at the current economic conditions. A 1/10th scale hydrogen recovery pilot plant using coke oven gas is recommended.
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